Device and method for decoding digital signals of image and sound

FIELD: digital audio and video technologies.

SUBSTANCE: device for storing information is made with possible receipt of data carrier, decoder is made with possible receipt of compressed encoded signals from data carrier and transmitting signals to decrypter. Decrypter is made with possible decryption of compressed encoded data encrypted data and transmitting these to decompressor. Decompressor is made with possible receipt of compressed encoded signals from decrypter and decompression of compressed encoded signals to reproduce the image.

EFFECT: higher precision, higher efficiency.

3 cl, 17 dwg

 

The scope to which the invention relates.

The present invention relates to the encoding of digital images and sound. More specifically, the present invention relates to a device and method for decoding digital image and audio data in the digital cinema system. This invention also relates to coding, compression, storage, encryption, decompression, decryption, and managed to reproduce the electronic audiovisual programs emanating from a Central device to multiple projectors or presentation system.

Description of the prior art,

For several decades the creative delivery of program material film in cinemas, are geographically distributed within a single country or around the world, depended on copying, distribution and projection of celluloid film. To a large extent the ways and mechanisms for the dissemination of footage so far has remained relatively unchanged.

The process of copying and distribution of films at the moment are presented in figure 1. The process of copying films usually begins with footage of the negative of the highest quality. At the end of the production process of the original film at the Studio 50 editor 52 of the film produces a master copy of the film. This master is the opium of the film through the device 54 copy of the film is that, what is called the negative of the distribution, which, in turn, in the required quantity produced prints for distribution (positive). Depending on the volume of production or the number of copies required for distribution of film, there may be additional intermediate stages and at each stage can be made multiple copies. The positives films are distributed through a courier or other physical path in various cinemas, an example of which is the cinema 56. In the cinema 56 the movie is shown through the projection of images from the film on the screen surface using filmproducer 58. In the above conventional system using device 51 audio editing creates a multitrack audio program, which is recorded together with the film on the film so that this sound track was reproduced sound system 57 cinema synchronously in time with the film in the projection system of the cinema.

Despite the fact that the distribution process, depicted in figure 1, works well, it has some limitations. Due to the use of celluloid as a material for the production of film and the limited bandwidth of the film material, there are restrictions on the ability to ensure m is agoonline sound program with high quality playback. Further, the production of multiple copies of the movie is a fairly expensive operation, the cost of which can be expressed hundred dollars for each copy of the feature film. Cash costs, complexity and time delay associated with the physical distribution of large containers celluloid film on the large and growing number of cinemas. Also in the film industry there is a growing trend of so-called "multiplex" cinema, in which multiple projection screens are located or concentrated together in a separate cinema. At the same time in each of the projection screens can display the movie other than paintings, exhibited in other cinemas multiplex complex.

Because of the large number of produced copies is becoming more and more difficult to prevent illegal copying and theft of cinema. It is estimated that the film industry every year loses billions of dollars in revenue due to piracy and theft. Moreover, copied the footage tend to degradation over time due to accumulation of dust, wear, temperature changes and other known factors. Ultimately, management expenses and other costs associated with the disposal of cinemate the material, which may contain regulated hazardous substances.

Thanks to the new and already outdated technology, it is possible to use alternative approaches to the above problems of distribution. For example, currently available methods of satellite transmission, although they are not commercially viable for distributing high-quality audio-visual (AV) material. Due to the fact that the process of distribution of films is essentially a special type of broadcasting across the continent, the method of distribution via satellite with all the inherent advantages relating to broadcasting on such a wide area, it seems most appropriate for the distribution of movies. However, to transfer high quality AV signal in "real time" required data rate (in bps) in the order of magnitude should be 1.5 billion bits per second. To send a separate program with such a high data transfer rate required bandwidth, the equivalent capacity of individual satellite, which is prohibitively expensive. Moreover, using alternative technologies distribution cannot achieve image quality and brightness projection provided celluloid film. Competing is echnology usually include recording audio-visual (AV) signals at different magnetic or optical media for display on the monitor on TV or projection equipment. These technologies do not provide the quality that is equivalent to the film, due to its limited bandwidth.

Moreover, the ability to transfer the required information through the satellite implies that the information should be displayed using high quality projector, which until now was not available. In addition, the implementation of a system of transmission and reception, based on satellites is very expensive and represents a radical change in comparison with the methods of distribution and screening of films, is currently in use. It should be understood that such a radical change is not initially can be acceptable from a commercial point of view.

Also, the success of digital technologies has led to the revolutionary concept of distribution, according to which the program material is stored electronically in digital format, and not on the optical film media. The digitized image can be distributed on various magnetic media or optical compact disks. They can also be sent via wire, fiber-optic, wireless or satellite communication systems. At the moment there are a variety of formats UCD-ROM (read only memory device on the universal digital the new ROM or DVD-ROM) data storage, when the capacity of one disk is in the range from about 4.5 gigabytes (GB) to about 18 GB. Data storage formats on WCD-ROM with a capacity greater 9 GB, implement bilateral disks. For access to information held on the second side of the disc UCD-ROM with a large capacity, you must manually flip the disk.

To store films with an average duration of two hours at an average repetition rate of the bits of the compressed image is equal to 40 Mbps and average repetition rate of the bits of the compressed audio and control information equal to 8 Mbit/s, it takes about 45 GB of space on the storage media. Thus, even in case of using the disk UCD-ROM with high capacity for displaying a two-hour movie requires multiple discs UCD-ROM to ensure adequate capacity.

Moreover, to play a two-hour film UCD-ROM requires a processing speed of more than 6 MB/s, or more than 48 Mbit/s Although there are some devices play UCD-ROM, which claimed the baud rate is 8 Mbps, while nothing can be said about the quality and reliability of these devices. Thus, there is no guarantee that these devices UCD-ROM will be able to reliably provide the speed lane the villas information equal to 6 MB/s

To reduce information repetition rate required for the stored high-quality digital images, have been developed for data compression algorithms. In the same way dynamic compression of digital images, providing significant compression while maintaining image quality, is the use of blocks and sub-blocks of data of the adaptive size of the encoded discrete cosine transform (DCT). In the future this method will be called by way of a discrete cosine transform with adaptive block size data (DCARB). Adaptive block size data are selected in such a way as to leverage information redundancy existing in the frame of image data. This method is described in U.S. Patent No. 5021891 on "METHOD AND SYSTEM for IMAGE COMPRESSION WITH ADAPTIVE BLOCK-SIZE DATA", assigned to the assignee of the present invention and incorporated herein by reference. The DCT method is also described in U.S. Patent No. 5107345 on "METHOD AND SYSTEM for IMAGE COMPRESSION WITH ADAPTIVE BLOCK-SIZE DATA", assigned to the assignee of the present invention and incorporated herein by reference. Further, the use of DCARD in combination with discrete transform with a tree quadrants described in U.S. Patent is 5452104 on "METHOD AND SYSTEM for IMAGE COMPRESSION WITH ADAPTIVE BLOCK-SIZE DATA", assigned to the assignee of the present invention and incorporated herein by reference. In the systems disclosed in these patents, uses interframe coding, in which each frame of a sequence of image frames are encoded without reference to the content of any other frame.

Dissemination movies using the digital electronic format significantly increases the potential for fast copying at a low cost without loss of quality. However, in addition to the ease of copying, characteristic of digital technology, there are ways of encryption ensures that information is encrypted in a way that prevents the dissemination of useful information to unauthorized parties.

Technology, similar to the way DCARD data compression, modern projection equipment and methods of electronic encryption enables implementation of a system of "digital cinema". According to the generally accepted definition digital cinema refers to the electronic dissemination and reproduction of high-quality films that have been converted to digital format for storage, transmission and playback. Using digital cinema system, you can overcome many of the limitations inherent in the process most the of films at the moment. For digital cinema will not be characterized by degradation of quality over time, which is the case for celluloid films. Next, using a system of digital cinema actually overcome the problem of theft and illegal copying of celluloid films and additionally provides the possibility of implementing security measures in the system of digital cinema. However, a complete digital cinema system still has not been developed by the film industry or related engineering fields.

Still remain some unresolved questions and issues. New digital cinema system require superior protection to prevent theft of the cinemas. For more economic returns the number of cinema complexes with multiple screens is steadily increasing, resulting in the complexity of the schedule of presentations and the number of locations where there is a showing of this film. This would require numerous additional electronic copies for their shipment for the purpose of presentation in cinemas using distribution methods at the moment that entails complexity and overhead.

The channels and mechanisms of propagation are still subject to the old way of copying and distributing celluloid film, to which were described earlier. It is essential that new methods have incorporated all the advantages of processing data, the system of digital cinema with the aim of reducing the volume up, ensuring a more rapid release of films on the market and product updates in the film, while ensuring improved planning and flexibility in the distribution at reasonable cost. At the same time, some producers, studios or managers of cinemas would like to have a centralized production and distribution, while expanding its presence in new markets. For example, it appears desirable to put movies or any other audio-visual presentations with alternate audio tracks to meet the growing demand in the markets with multilingual audience or foreign language classrooms in more efficient spending.

Thus, it is important to integrate certain technologies in the device and method of encoding, encryption, storage and management of digital image and sound. The task of the present invention are achieved is described below.

The INVENTION

The object of the present invention is a device and method according to which the encrypted signal that is a representation of the image and sent is in a compressed and encrypted form on the storage medium, processed to ensure the reproduction of the image, and this device includes a storage device configured to receive the media information, and the decoder is configured to receive encrypted and compressed signals from the media. This advanced decoder includes a decoder configured to decrypt the encrypted and compressed signals, and a decompression device data configured to receive compressed data signals from the decoder and decompression of encrypted and compressed signals in order to reproduce the image, and the decompressor uses a method of data compression, based on the inverse discrete cosine transform with adaptive block size data. The method according to this invention is a method, according to which the encrypted signal that is a representation of the image and sent in a compressed and encrypted form on the storage medium are processed to enable the playback image, and this method includes the steps of extracting compressed and encrypted signals from the storage medium; decoding the compressed and encrypted data to decrypted issuing compressed signal; decompressing the compressed and encrypted signals to ensure in the works images moreover, in the process of decompression uses a method of data compression, based on the inverse discrete cosine transform with adaptive block size of the data.

Accordingly, the described apparatus and method provide decoding, decryption and decompression of image data and/or sound, in the General case presented in the form of program material. The Central device or hub program material is compressed in a digital form is encrypted and stored ready for distribution at the display device with a large screen in one or more movie theaters or cinemas. To program material, in General, is a picture films, sound program, synchronized with the image in time, and/or other relevant information, such as, for example, visual cues for audiences with defective vision, subtitles for translation into foreign languages and/or for audiences with defective hearing, as well as advertising and directing track, designed for multimedia data. Program material may have a greater duration (for example, full-length movie) or short (for example, the announcement of a film or commercial advertising), or to be stationary frame (for example, advertising or na is na). Sound and other relevant programs do not have to be synchronized in time or stored together with the video image, as, for example, in the case of background audio programs and advertising.

At the Central hub software information is processed for distribution. The generator source data located either in the Central hub, or in any other place, can be used to generate electronic signals audio and video from analog or digital input. The generator source data may include teleconferencing apparatus intended for forming an electronic image signal, and the reader audio information intended for the formation of the electronic audio signal. Alternatively, an electronic signal may come directly from a digital camera or other electronic source, such as, for example, a computer system forming images.

Then the electronic image signals and are subjected to processing device compression/encryption of data. The device compression/encryption of data, again, may either be located in the Central hub, or in the same location as the generator of the original data, for example in producing Studi is. For recording audio data and image on the media you can use known technology dynamic data compression. As a method of data compression, you can use the method of DCARD described in patents numbers 5452104, 5107345 and 5021891. The storage medium may be any type from the following list: electronic tape large capacity; magnetic or optical storage devices such as compact discs, digital versatile discs or hard drives, network storage device. Moreover, some information instead of storing can be transmitted via a wired, fiber optic, wireless or satellite communication systems. The audio signal can be compressed by using the methods mentioned above or by using the standard algorithm for digital audio compression. Compressed audio data can be stored on the same media.

The encryption methods involve the use of variables in time of the values of electronic keys and/or digital sequence of control words, which is supplied to authorized receivers and projectors. Moreover, the image signal and/or audio, you can add a digital signature or watermark. Watermark is not perceptible to the ordinary audience, but at the same time serves to identify the source of unauthorized copies of p is ogramme in the analysis of non-real-time or playback a still frame. Information decryption is required to decrypt the information, images and/or sound, is formed as a separate device decryption using unique keys secret algorithms and proprietary information, forwarded to the cinema. In the General case, the image signals and the sound is encrypted separately. By processing the segments belonging to the sound and image as separate programs, you can combine different audio programs with different software images that may be necessary for several reasons, one of which may be different languages.

Compressed and encrypted signals are also stored on the storage media or served on the Central hub for onward transmission. If there has been a transfer, by using the modulation method and transmission you can add information direct error correction and to modulate the data stream intended for transmission. Transmission can be through any type of wired or wireless communications, such as via the ground cable, optical system, satellite, Internet or other means.

The Central hub further includes the device management network. The device management network, in turn, may include a processor control designed to control all work the second encoder, and engine cinema that involves storing, playback/display, General monitoring/management and functions of network management. The device management network is able to operate in a centralized or distributed full automatic control, semi-automatic control or manual controls.

Running device network management software material and additional management information is stored and transferred in a subsystem of the cinema. The control device also includes control methods designed for the notification subsystem cinema about the identity of the transmitted programs. Moreover, given the control method that is designed to selectively store management adopted program of each of the subsystems of the cinema.

In the subsystem of cinema, the storage device receives the media(and) information from the Central hub. The playback module reads information from storage media, monitors recorded data for errors and requests retransmission of data blocks containing errors. To request retransmission subsystem cinema, such as the control device cinema, uses the communication path (cinema tsentralnomu hub). As the communication path can be used in a telephone network, a satellite channel, the Internet or any other communication method.

Under the control of the control device of cinema the storage device subsystem of the cinema can be used as a local centralized repository of program material. The storage device may include such media as UCD, removable hard drives, or a module of mine action (a simple array of disks). The storage device can be written to multiple programs at the same time. The storage device may be connected to a local area network (LAN) (electronic or optical) so that any program can be reproduced and displayed on any authorized projector. Also, the same program can be played simultaneously on two or more projectors. Program material is directed from the storage devices in the set(s) movie(s) via a local area network (LAN), to build which can be used in various network architectures. In the present description assumes the use of medicines architecture with a Central network switch. However, for the subsystem may use other types of architectures drugs.

After the peredachi program material on the playback module decoder decompressive and decrypts (or descrambled) program material. Algorithms decompression and decryption of the data depends on the appropriate methods of compression and encryption used on the Central hub. Decompressional/decrypted information is displayed using the projector in the cinema, while the audio signals are reproduced by means of electronic audio subsystem.

The control device cinema, in General, manages all aspects of projection, including the storage of received programs, decompression and decryption of signals program material and displaying program material. The control device cinema can also control the time period and/or the number of times of playbacks allowed for each program. Alternatively, the control process of the presentation can be localized on the projector, the remote control unit or may be operated by a Central hub or other Central element. Moreover, the control device cinema can be configured to integrate processes play with other procedures in the cinema, such as operations related to discount agreements, ticket sales, advertising, alarm, control of environmental conditions, lighting, sound management the new system, etc. Also, each subsystem cinema may include multiple screens that share a common repository and management features for more flexible presentations with effective expenditure of funds.

The use of digital encryption provides built-in security measures. To ensure end-to-end encrypted data transfer uses cryptographic methods. In other words, image data and/or audio is encrypted on the generator source data and decrypted in the subsystem cinema during playback. In addition to electronic security measures physical security measures provide additional protection program material.

Physical security measures may be particularly important for the protection of decompencirovannah/decrypted signals from eavesdroppers, prior to playing the projector subsystem cinemas. In the embodiment of the present invention, the device decompression/decryption of data is mounted in a protected closed casing, which is physically attached to the projector or embedded in such a way that the cover cannot be removed without authorized access. This cover prevents the sensing of the decoded signal. Moreover, the penetration in a protected environment or casing m which can initiate the process of destroying or erasing the cryptographic information on the electronic key, as well as the destruction or alteration of digital data available at the point of supply to the projector to prevent copying.

Accordingly, the present invention presents an apparatus and method of decoding, decompression and decryption of digital data of image and sound, and control functions to monitor and control such a device.

LIST of FIGURES

The features, objectives and advantages of the present invention become more apparent when the detailed description below in conjunction with drawings that use sequential numbering of positions:

Figure 1 shows the block diagram of the traditional system of distribution of films.

Figure 2 shows enlarged block diagram of a variant of implementation of the digital cinema, corresponding to the present invention.

Figure 3 shows the block diagram of the generator of the original data, based on the use of film.

Figure 4 shows the block diagram of the device of the compression/encryption.

Figure 5 shows the block diagram of the device management network.

Figure 6 shows the block diagram of the internal network hub and the redundancy of the Central hub.

On Figa-7D shows the block diagram of the storage device.

On Fig shows the block diagram of the module storing information, which is used by a few players disks, connected in series, and the playback device.

Figure 9 shows a block diagram of a storage device the information in which use multiple disc players connected in parallel, and the playback device.

Figure 10 shows a block diagram of a storage device the information in which is used a cassette magnetic disk and the playback device.

Figure 11 shows the block diagram of the subsystem of cinema, in which the device information storage uses a removable hard disk.

On Fig shows the block diagram of the control device of cinema.

On Fig shows a block diagram of a subsystem of cinema, in which the device information storage module is used mine action.

A DETAILED DESCRIPTION of the PREFERRED embodiments

The present invention includes a device and method for electronic decoding, decompression and decryption of audiovisual programs, such as films in cinemas, theaters, cinema complexes and/or presentation systems, sometimes called "digital cinema".

Digital cinema combines innovations in the compression of image and sound, technology projection methodology encryption and many other areas. Digital cinema is designed to replace the use is considered in the present method, the physical distribution celluloid film to each location its reproduction or projection, such as a cinema or remote cinema. Thanks to digital cinema, there is no need to copy celluloid film and provides the potential for high-quality playback of audiovisual programs, as well as for built-in security measures. Programs can be transferred in cinemas and stored on the storage devices such as removable hard drives (SZD) or digital multilateral disks (UCD), for subsequent playback.

Although the present invention with equal success can be applied for the presentation of visual and audio information for a variety of presentations, such as open cinemas, cinema complexes for motorists, public halls, schools, specialty restaurants, etc. in order to ease the data presented below uses an approximate variant of the cinema or cinema complex. For specialists in this field of technology is not difficult to understand how the present invention can be applied to other presentations.

The device 100 digital cinema of the present invention is shown in Figure 2. The device 100 digital cinema consists of two main systems: at least one Central device or hub 102 and at least one subsystem 104 cinema is or presentation. The design of the hub 102 and subsystem 104 cinema similar to the design of the hub and engine cinema, described in pending Patent application U.S. serial number 09/075152, filed may 8, 1998, assigned to the assignee of the present invention and incorporated herein by reference.

According to a variant implementation of the present invention the image data and the sound is compressed and recorded on the storage medium and extends from the hub 102 to the subsystem 104 cinema. In General, for receiving image data and audio in network places presentation subsystem 104 cinema is used in every theater or place of presentation, and includes a centralized equipment, as well as certain equipment used for each presentation room.

At the Central hub 102 generator 108 receives source data stuff and generates a digital version of the film. Digital data is compressed and encrypted by the device 112 compression/encryption (SSD) and written to the storage media device 116 storing information hub. The device 120 network management controls and transmits control information to the generator 108 source data, SSD 112 and stores the and the media data by device 116 storing information hub. The device 124 controls conditional access provides information about the specific electronic keys, resulting in only a particular cinemas become authorized to display specific programs.

Subsystem 104 cinema device 128 management cinema manages device 132 management cinema. On the basis of control information received from the device 132 management cinema, the device 136 storing information of cinema transmits the compressed data stored on the storage medium, the module 140 playback. The module 140 playback receives compressed data from the device 136 storing information of cinema and prepares the compressed data for processing in accordance with a predetermined sequence, size, and speed information (repetition frequency). The module 140 playback outputs the compressed data to the decoder 144. The decoder 144 receives the compressed data from module 140 playback and performs decryption, decompression and formatting data and outputs the processed data to the projector 148 and sound module 152. The projector 148 reproduces the data on the screens, and sound module 152 reproduces the audio information through the speaker system, both running device 132 management cinema.

When the function generator 108 source the x data feeds into the system digitized electronic video and/or audio programs. Typically, the generator 108 receives source data stuff and generates digitized information or data recorded on the magnetic tape. To create a digitized version of a film or any other program, the film is scanned digitally at very high resolution. Usually in the process of film-videopresentation (converting images from film to a digital signal) is formed image data, the audio part of the program is formed by a widely known digital sound processing. The processed image need not be taken from the film, and may be a single image or image type fixed frame, or a series of frames or images, including those shown as films of variable duration. These images can be represented as a sequence or set, with the aim of creating what is commonly referred to as video. Moreover, there may be provided another material, such as tracks with visual prompts for audiences with defective vision, subtitles for translation into foreign languages and/or for audiences with defective hearing, and directing track, designed for multimedia data. Similarly, to generate a desired sound programs are separate C is uki, sets of sounds or record.

Alternatively, the digital image data can be obtained using a digital camera with high resolution, or other known device or method for forming the digital image data. Use your digital camera directly issuing digitized image data, is particularly effective for capturing live events for almost instantaneous or simultaneous distribution. For the immediate creation of the graphics image to be spread, you could also use the computers or similar equipment.

Digital image data are fed to the device 112 compression/encryption of data, which compresses the digital signal using a pre-selected known format or process, thereby reducing the amount of digital data required for high-quality reconstruction of the original image. To compress the original image in the preferred embodiment, the present invention uses a method of DCARD. How DCARD data compression described in the aforementioned U.S. Patents for non-5021891, 5107345 and 5452104. Audio information may also be compressed using standard methods and synchronized in time with the compressed information izobrazheniya image information and the sound is then encrypted and/or scribblenauts using one or more secure electronic methods.

The device 120 network management monitors the state of the device 112 compression/encryption of data and sends the compressed data from the device 112 compression/encryption device 116 storing information hub. The device 116 storing information hub includes one or more media (shown in Fig). As described below, the carrier(s) of information may be representative of any type of data storage devices, high-capacity, such as a digital versatile disk (UCD) or a removable hard drive (SZD). After recording the compressed data on the storage medium, this storage medium is physically transported to the subsystem 104 cinema and, in particular, in the device 136 storing information of theatre.

In alternative embodiments, the implementation of the present invention the compressed image information and audio are stored separately (nesmin) and independently from each other. That is, there is provided a method for compressing and storing audio programs related to the information image or video, but separated from them by time. When applying the present invention not imposed any requirements on the simultaneous processing of sound and image. To associate the proper audio and video with each other depending on the circumstances used ZAR is it a specific ID, either the mechanism or the identity map. This allows the requirement to bind one or more predefined audio programs with at least one video during or in the course of the presentation. In other words, in the absence of the initial timing to the compressed image information compressed audio data are linked and synchronized with the image data when the presentation program.

In addition, separate storage for audio and video allows you to synchronize audio programs in different languages with the video without having to re-create a video for each language. Moreover, separate storage for audio and video allows you to maintain multiple speaker configuration without interleave multiple audio tracks with the video.

In addition to the video and audio program in the system can be added to a separate advertising program. Usually promotional material changes more often than art program. The use of a separate advertising program allows you to update promotional material without the need to refresh and art programs. Advertising the program includes such information as directly advertising (slides, audio, advertisin the main rollers and the like) and upcoming movies, that will be shown in the cinema. Due to the large information capacity storage media, such as OCD or Northern railway, they can be recorded thousands of slides, or other promotional items.

The use of storage volumes, high capacity can be adjusted so that the specific slides, advertisements or announcements can be displayed in a particular cinemas specific customers.

Although figure 2 shows the compressed data stored on the device 116 storing information, and physical transport media(s) of the information subsystem 104 cinema, it should be understood that the compressed information, or blocks can be passed to the device 136 storing information of cinema using any of a number of ways a wired or wireless transmission. Modes of transmission include satellite transmission, widely known multi-drop line, the nodes of the Internet, leased telephone lines or point-to-point fiber-optic network.

The following is a description of embodiments of blocks of data from the Central hub 102, which is depicted in figure 2-9. Figure 3 shows the generator 108 of the source data. According to Figure 3, the generator 108 source data digitizes the original 156 of the movie, such as painting the hydrated film, shot on 35mm film, and then digitized version is recorded on the magnetic tape. The generator 108, the source data includes film video or process 164 high definition (HF)used to obtain the original version 156 of the film and for forming a digitized images of the original version 156 of the movie. Movie video conversion is widely used in the film industry, and to implement this process, we can use any of several available commercial services or devices. However, in the preferred embodiment of the present invention film videopresentation with high resolution is used as the currently available equipment produced CINTEL or Philips BTS and widely known in the art. The resolution and the specific selection of used equipment are determined by cost and other known factors considered in the development of this service. Depending on the target audience, available projection equipment and location, as well as taking into account the wishes of the reduction in data transfer speeds for certain types of satellite transmission, you can use an alternative resolution values.

If the source option 156 of the movie is a variant in a standard format 35 mm, then the processing of the images is performed using a film videopresentation at 24 frames per second. The digitized output movie videopresentation can be recorded on a magnetic tape using a high-speed recording device or can be immediately compressed and/or encrypted using a slower recording device to tape, or using other known systems or media for storage of images.

Due to the fact that the movie Converter can only process the image, the portion of the source data related to audio is processed independently of the image. If in the original version, the sound is recorded in analog format, for digitizing it is usually served on a magnetic tape 168 in the device 172 reading sound. In the first embodiment of the present invention, the multiplexer 176 combines up to twelve channels of digital audio from a digitized image. The multiplexed signal is recorded together with the video program on a storage medium, such as device 180 record digital video for the film with high density or similar storage device for digital information storage. Alternatively, as mentioned above, the audio program may be stored and processed separately from the video, when this information is incorporated timing necessary to ADJ the CSOs combining time audio and video playback system of cinema. The timing information may be stored in the video program, audio program or in a separate control program.

Despite the fact that the generator 108, the source data is depicted as part of the Central hub 102, it should be understood that the generator may be placed in the device, other than the Central hub 102. Other devices may be more appropriate for the formation of the digitized signal with tape, magnetic or optical media. Alternatively, the generator 108, the source data may include a digital camera with a built-in magnetic or optical storage device, or other digital mechanism for the formation of images (e.g., one that is used for computer graphics and special effects), which directly generates the digital source material. The generator 108, the source data may also include the system of digitized still images, such as an optical scanner or imager used for photographic slides 35mm format or prints. Thus, ordinary and specialized studios such as Studio effects, or other institutions involved in the preparation and presentation of programmes form the required digitized mater is al, which is then applied to the hub 102 for further processing or transmission.

Figure 4 shows the block diagram of the device 112 compression/encryption of data. Like the generator 108 source data device 112 compression/encryption of data may be part of the Central hub 102 or may be located in a separate device. For example, the device 112 compression/encryption data can be co-located with generator 108 of the source data at the production Studio, film and television. Moreover, the process of compression or image data, or audio data can be implemented as a process with variable speed.

The device 112 compression/encryption takes the digital data generated by the generator 108 of the source data. Before further processing the digital image data and sound can be written into the frame buffer (not shown).

The digital image signal is transmitted to the device 184 image compression. In a preferred embodiment, the present invention device 184 image compression processes the digital image signal, using the method of DCARD described in the aforementioned U.S. patents for non-5021891, 5107345 and 5452104.

According to the method of DCARD input color signal is usually served in the YIQ format, where Y indicates the luminance or brightness, and I and Q represent the components is, for example, saturation or brightness. You can also use other formats such as YUV or RGB. According to the method of DCARD due to low spatial sensitivity of the eye to the color of the color components (I and Q) discretized on the number of fragments that is divisible by two in both the horizontal and vertical directions. Therefore, to represent each spatial segment of the input image are four components of the luminance and two components of saturation.

Each component of lightness, and saturation is applied to the device block interleave. In the General case, the data block size of 16×16 is supplied to the device block interleave, which arranges the image fragments in the above-mentioned data blocks of size 16×16 to form blocks and composite sub-blocks of data for analysis by discrete cosine transform (DCT). The operator da is a one way signal conversion, discrete time, the frequency representation of the same signal. By converting in frequency representation using the DCT method achieved very high levels of data compression, resulting in discretization possible to construct in such a manner that fully takes advantage of the characteristics of the frequency representation and what the considerations applying. According to a preferred variant implementation of the present invention for the first ordering applies DCT 16×16, for the second ordering are the four DCT 8×8, for the third ordering used sixteen DCT 4×4 and the fourth ordering used sixty-four DCT 2×2.

The DCT operation reduces spatial redundancy characteristic of the original version of the image. After performing DCT most of the signal energy is concentrated in a few coefficients of the DCT.

For a data block size of 16×16 and each subblock data analysis of transformed coefficients to determine the number of bits required to encode each block or subblock data. Next, the data block, or a combination of sub-blocks of data for encoding which requires the smallest number of bits is selected as the representation of a segment of the image. For example, to represent the segment of the image, you can choose two sub data size of 8×8, six sub-blocks of data of size 4×4 and eight sub-blocks of data of size 2×2.

Then the selected data block, or a combination of sub-blocks of data are properly ordered. When preparing to transfer the values of the DCT coefficients can undergo further transformations, such the AK frequency weighting, sampling, coding (e.g., coding with variable length) using known methods, and the data conversion is not limited to the above list. The compressed image signal is then fed at least one device 188 image encryption.

The digital audio signal is usually served on the device 192 audio data compression. In a preferred embodiment, the present invention device 192 audio data compression processes multi-channel audio information using a standard compression algorithm for digital audio. The compressed audio signal is at least one device 196 encryption of sound. As an alternative, can be transmitted and used in uncompressed, but nevertheless digital format.

The device 188 cryptographic image and device 196 encryption audio encode, respectively, the compressed image signals and sound using any of several known methods of encryption. The image signals and sound can be encrypted using the same or different encryption methods. In a preferred embodiment, the present invention uses encryption method, which includes scrambled digital sequences as a video, and sounds the th programs in real time.

On the device 188 cryptographic image and device 196 encryption of audio program material is processed by the schema scrambling/encryption that uses time-varying information about electronic keys (it usually changes several times per second). Past the scrambling program information can be stored or transmitted, for example, through the air wirelessly without being available to decrypt those who do not possess information about the electronic keys used in the scrambling program material or digital data.

Encryption typically involves scrambled digital sequences or direct encryption of the compressed signal. The concept of "encryption" and "scrambling" are used interchangeably and refer to any method of processing streams of digital data originating from different sources, using one of a number of cryptographic methods for scrambling, encoding, or encryption mentioned streams of digital data, using the sequence generated by using the secret digital values ("keys") in such a way that is extremely difficult to restore the original sequence data, without knowing the values of the secret key.

Each video or sound the new program can use specific information about the electronic keys, which is transmitted encrypted using a specific theater or presentation hall information on the electronic keys authorized to show this program theater or showroom. This function performs device 124 controls conditional access (WOOD). Encrypted software key required to decrypt the recorded information in the cinema, forwarded or otherwise delivered to authorized cinemas before playing program. It should be noted that the recorded program information may be transmitted or delivered for a few days or even months before the beginning of the period authorized display or encrypted video or audio program may be transferred or delivered, directly before the beginning of the period authorized display. The encrypted key may be transmitted using a low-speed communication channel or wearable item store information, such as information carrier for magnetic or optical disk, a smart card or other device with erase the contents of the storage elements. The encrypted key may be provided so that when it was managed by the period of time during which a specific theatrical sets the COP or the cinema is authorized to display this program.

Each subsystem 104 cinema, receiving the encrypted program key, decrypts this value using a key specific to this movie theater, and stores the decrypted program key in a storage device or other secure storage device.

When playing this program uses information about the electronic keys that are specific to the cinema or location, while preferred is the use of a symmetric algorithm used by the device 112 encryption when preparing an encrypted signal, which in a given moment of time is descrambling/decrypted software information in real time.

Returning to Figure 4, it should be noted that in addition to the scrambling device 192 images can add to the program information "watermark", which is inherently digital information. This implies inserting in the program sequence of the visible identifier specific to a given location and/or for a given period of time. That is, the watermark is generated to indicate an authorized location and time for the presentation to more effectively track the source of an illegal copy if necessary. Water is Noah the sign can be programmed he will appear through frequent, but random periods of time during playback, and will not be visible to the audience. When displaying the head of the uncompressed image in a mode called normal speed transmission, the watermark is not visible from the point of view of perception.

However, this watermark becomes visible when playing back image data or sound with a speed that is significantly different from normal, such as a lower speed "is not real-time or playback speed stationary frame. If you received an illegal copy of the program, the authorities may consider the digital watermark information, thereby to determine the cinema, which was made this illegal copy. This method of inserting a watermark can be applied or used to identify audio programs.

Compressed and encrypted audio signals and images together are fed to the multiplexer 200. The multiplexer 200 information audio and video multiplexed with the information of the time synchronization to ensure opportunities are synchronous in time of playback of the stream of image data and sound subsystem 104 cinema. Next, the multiplexed signal is processed by the device 204 packaging program, the cat is PoE pattisue data to form a program stream. Using batching data or, in other words, the formation of blocks of data in the program stream can be monitored for errors when receiving data blocks in the process of decompressing data. The request for re-receiving the data blocks containing errors may be performed by device 128 management cinema or subsystem 104 cinema. Accordingly, if an error takes place, the replacement shall be subject to only a small part of the program, not the whole program. Requests for re-obtaining small blocks of data can be transmitted over a wired or wireless communication channel. This provides increased reliability and efficiency.

In an alternative embodiment, the present invention segments of the program related to the image and sound are processed separately as different programs. Thus, instead of using a multiplexer 200 for multiplexing image signals and sound provides a different packaging of image signals. In this embodiment, the video can be transported without a sound program and Vice versa. In this case, the video and audio program are collected in a single program only during playback. This allows you to combine different audio programs with programs in several in the Inam, such as different languages, making updates after the release or modification of the programs, the need to adhere to community standards, etc. This feature, allowing flexibility to assign different multitrack audio program for video proves to be very efficient to reduce costs when changing programs, already at the stage of distribution, and in meeting the demand for affordable modern cinema markets with different cultures.

Device 184 and 192 data compression device 188 and 196 encryption data, the multiplexer 200 and the device 204 packaging program can be implemented in the controller module 208 of the compression/encryption (SSD), which is a software-controlled processor, programmed to perform the above functions. In other words, the above device can be implemented as hardware with generic functions, which includes a number of programmable electronic devices or computers that operate under control of software or firmware. Alternatively, the above device can be implemented using a different technology, for example by SIMS (specialized in the integrated circuit) or by one or more circuit boards. In other words, these devices are implemented as specialized hardware.

The data flow of video and audio program sent to the device 116 storing information hub. The controller 208 SSD primarily responsible for the management and monitoring of all devices 112 compression/encryption of data. To perform the required functions of the controller 208 SSD can be implemented via programming equipment or generic computer, or through the use of specialized equipment. As described herein, the device 120 network management (Figure 2) delivers the data to the network management controller 208 SSD on the internal network hub. The controller 208 SSD exchanged with devices 184 and 192 data compression devices 188 and 196 encryption data, the multiplexer 200 and the device 204 packaging, using known digital interfaces, and controls the operation of these elements. The controller 208 SSD can also control and monitor module 116 information storage and transfer of data between the above devices.

Is preferred that the device 116 storing information represented one or more disks Northern railway, OCD or other media, large capacity, and design of this device is usually similar to the design of the device 116 storage subsystem 104 cinema (Figure 2). However, specialists in the art will celebrate the fact that in some applications, you can use other media. During the phase of data compression device 116 storing information gets compressed and encrypted image data, sound, and control device 204 packaging program. The controller 208 SSD controls the operation device 116 storing information.

Figure 5 shows a device 120 network management. The device 120 network management monitors and manages the hub 102 and that is optional, the entire system 100 digital cinema, including the management and monitoring of components of one or more subsystems 104 cinema. Management can be centralized so that the device 120 network management controls the overall operation of the system, including the management of shipment, playback/display, safety, and General functions of network management. Alternatively, you can implement a distributed control system in which the processors in the system cinemas or presentations only control some of the functions of the cinema.

The device 120 network management includes at least one processor 212 network management, which is the Central controller or the "brain" of the system 100 digital kinow General, the device 120 network management is based on the workstation standard platform or similar programmable equipment data processing. The processor 212 network management controls aspects of planning and security of the hub 102. Running device 120 network management information management or software update can be transferred from the hub 102 in advance before the appearance of the program subsystem 104 cinema. The processor 212 network management also manages the communication or data transfer rate programs in the subsystem 104 cinema. The data rate may be fixed or variable depending on program type and structure of channel or transmission path. For example, it may depend on the data rates for a particular data channel. Also, information encoding speed compression program material may be different for different programs, providing a variable level of quality of data compression.

The processor 212 network management interacts with other components of the hub through the internal network hub, which is usually implemented in accordance with the standard network architecture with megabundle line. However, it is possible to use other known models and types of network architectures, including Opticheskie channels of communication. In a preferred embodiment of the present invention, the hub 216 Ethernet system 112 network management provides network hub, as described with reference to Fig.6.

The device 120 network management can also include a modem 220, providing a network interface, cinemas via the Internet or the PSTN (public switched telephone network (PSTN), and, in General, includes a set of modems that are designed to communicate over a phone line connection on request, cable or satellite modems, controllers CSCW (digital communication network integrated services) or mobile channels or other known means. The modem 220 communicates with the processor 212 network management the network through the server functions of the modem. The modem 220 serves as a receiver of the communication path feedback from the cinema to the Central hub 102. For example, the device 128 management cinema, shown in Fig.7, monitors the quality of the process decompression processes in the subsystem 104 cinema, and issues a quality report in the system 120 network management. The return path can be used by cinemas to request retransmission of data blocks of the program containing the error, with the Central concentrate the operator 102. Moreover, you can request additional presentation programs, and changes or updates of the software material using the above-mentioned communication channel. In alternative embodiments, the implementation of the present invention, the reverse path can be implemented via a satellite link, or other low-bandwidth communication method, or via the Internet. In this case, instead of the modem 220 to implement the interface you are using other known means or device depending on the circumstances.

The user interface 224 allows the user to directly control the device 112 network management and, accordingly, all of the hub 102 and/or subsystem 104 cinema. The user can monitor the status of the hub 102 and to control the timing of the various modules of the hub 102. Moreover, the user interface 224 allows you to configure various embodiments of the device 116 storing information, including type of media, and how that determines how and where to store the program on the media. The user interface 224 is typically a personal computer with a monitor and keyboard.

Figure 6 shows the block diagram of the internal network 228 of the hub. Internal network 228 hub is predstavljaet the main communication highway of the Central hub 102. Internal network 228 hub can internally to increase through a local area network (LAN) standard Ethernet running the Internet Protocol IP. Thus, the internal network 228 hub physically connects to a network hub 232 device 112 compression/encryption device 116 information storage device 120, the network management device 124 controls conditional access, and, as optional extras, with the device 128 management cinema from the subsystem 104 cinema. In addition, the internal network 228 of the hub may be redundant or spare components designed to ensure the health requirements of the system in case of failure of major components. If it corresponds to a specific delineation of functionality on the local and remote functions, then, if desired, to connect the main hub 102 to an external computer network or communication system, you can use the external interface.

As shown in figure 2, the subsystem 104 cinema is constructed with at least one, and in the General case of multiple devices 132 management screens under management device 128 management cinema. For example, some shopping malls cinemas built in the form of cinema complexes, consisting carried the channels at cinemas under one roof, moreover, the complex of this kind are often called Cineplex cinema or multiplex cinema. Stored compressed data can be transferred in one or more devices 132 management screens in one cinema complex.

Module 132 management cinema includes device 136 storing information of the cinema, the module 140 playback, the decoder 144, the projector 148 and sound module 152. In the process of working medium storage device 136 storing information of cinema contains compressed information. 7 shows various embodiments of the device 136 storing information. Usually the media is physically transported from the hub 102 to the subsystem 104 cinema, although it is anticipated that the hub 102 to the subsystem 104 cinema can be transferred only part of the information. The media can represent one or more disks 236 USD (Figa and Figv), one or more removable hard disk 240 (Figb), the internal hard drive (Wngd) 244 as part of the playback module (Figg), composed of a set of storage elements, a simple array of disks (mine action) 248, or a combination of the above.

In the embodiment, using USD as carriers of information you can use multiple disks 236 USD. This alternative implementation is shown on Figa. The usual two-hour movie, for which the repetition frequency of the bits of the compressed image is about 40 MB/sec, and the frequency of repetition of bits of audio data and information management is about 8 MB/sec, requires a storage of approximately 45 GB of memory. Modern storage formats UCD-ROM provide from 4.5 GB to 18 GB. Volume exceeding 9 GB is achieved by using a double-sided discs that to gain access to the other side to turn. Therefore, even if you apply UCD-ROM drives high-capacity, ensuring adequate space for the two-hour movie requires multiple UCD-ROM.

As described above, is preferred to separate the image data from the sound data. This alternative implementation is shown in Figv. Program 252 is recorded on a separate storage medium that is different from that recorded audio program 256. As the media can play discs UCD or Northern railway. When using the present invention is not necessary to process the audio program at the same time with the video. Storing a sound program separately from the video program allows you to synchronize audio programs in different languages with this video without the need and re-produce a video for each language. Moreover, a separate storage sound program allows you to use different speaker configuration without the need to interleave multiple audio tracks with the video.

In addition to video 252 and sound program 256 in the system you can add and individual advertising program (promotional video) 260. Some adware 260 allows you to update the content of advertising without the need to create new art video 252. Advertising program 260 may contain the actual advertising, trailers or movies, as well as information management and/or information about the electronic keys for subsystem 104 cinema.

Use as a media removable hard disk provides several advantages, namely: ease of copying and lesser frequency of occurrence of errors. This alternative implementation is shown in Fig. The information stored on the hard disk 240, easy to replicate by rewriting it on other disks in a personal computer (PC). In addition, due to the large information capacity of the removable hard disks, you can do less of them. In comparison with other media use hard disks reduces the likelihood of errors due to incorrect handling of the media is. Moreover, the removable hard disk is more likely to maintain data integrity under severe conditions, such as improper handling during transportation, exposure to dust, dirt, noise, or any other external influence.

In yet another embodiment of the present invention, shown in Figv, in addition to other storage media used internal hard drive (Wngd) 244 and the modem 264. Record information on Wned 244 via modem 264 allows you to directly send the information to the cinema through existing networks, such as through a telephone line, CSCW (digital communication network integrated services), cable modems, or line DSL (digital subscriber line). So, updates to the advertising information and announcements movies can be sent over the phone line and make Vngd 244. Alternatively, new slides can be shown in theater directly with Vngd 244, and not with a disk that contains commercials. Send updates to promotional materials and announcements of movies over the connection via modem 264 leads to substantial savings, as it allows to avoid the costs associated with printing and distributing additional drives with promotional materials.

Another function Vngd 244 is to provide zelos the activity data. Before sending the data to the playback module Vngd 244 checks recorded on the medium information concerning the integrity of the data. System data integrity verifies the electronic signature (the signature) of each data block. If the verification procedure CEC (cyclic redundancy control unit fails, or if the unit is lost, the playback module uses a modem connection, to request re-sending erroneous data block. After the request for the desired data block is written to Vngd 244. When the playback module plays back the program, for playing the requested blocks it at the right time refers to Vngd 244. For efficiency and because of the speed of data transmission in bits the most useful access to the relatively small number of blocks. If the system error checking detects that damaged a large number of data blocks, receiving the error notification, the user can decide how the amount of lost data justifies the physical transportation of data discs.

Use Vngd 244 and modem 264 is also beneficial for the dissemination of cryptographic information on the electronic key. The device 124 controls conditional access sends Vngd 244 cu is tographically information about electronic keys and other information management or by the physical transmission of data on a separate storage medium, or via modem 264. In turn, the device 124 controls conditional access can be sent data about the operational status, reports, and other information. Despite the fact that the management information is transmitted from the main hub 102 and subsystem 104 cinema is able to receive all transmitted information subsystem 104 cinema selectively demodulates and stores only accept programs that are designed for this specific module 104 of the cinema.

If you have Vngd 244 sufficient information capacity, or if you use mine action 384, a video program, audio program and/or commercials can be downloaded on Wnwd with the basic carrier of information. Use Vngd 244 allows the module to do the double play movies and play several programs at scheduled times. In addition, by downloading the program(s) on multiple modules playback and playback of these programs with Vngd 244 of each of the modules play this movie can be shown on multiple screens.

In the pictured Figd alternative embodiment of the present invention, the interface provided by the modem 264 for 7 g, is replaced by the interface 268 local area network (LAN). In addition to performing functions similar to those described interface, about specimena modem 264, interface 268 LAN can be connected to one or more modules playback and/or device 128 management cinema. A user interface (not shown) connected to the interface 268 drug and/or device 128 management of theater so that the user can remotely control and monitor functions such as planning sessions, management and tracking of failures of each of the modules playback, decoding, image and sound. In addition, it is possible to connect to the interface 268 HP device 120 network management. Interface 268 HP also provides the ability to transfer programs between modules playback.

Variant implementation of the present invention, in which the media are used multiple disks a, 272b,..., 272n UCD and uses multiple single-disc players a, 276b,..., 276n UCD shown in Fig. Single-disc players a, 276b,..., 276n UCD are included one by one according to a predetermined sequence and reproduce information recorded on the respective disks. Through the switch 280 recorded information is fed into the buffer 284, for example, in the pictured Fig buffer 284 RAM (random access memory) OSP (FIFO type (FIFO)). The buffer RAM 284 OSP shall have the capacity, sufficient for the decoder 144 and, as a consequence, the projector 148 had no excess or lack of information. In a preferred embodiment of the present invention, the buffer RAM 284 OMT has a capacity of from 100 to 200 MB. The use of buffer RAM 284 OSP becomes especially important when sequential reading disks a, 272b,..., 272n USD. In sequential reading UCD ROM drive in the moment of switching from disk to disk, you may experience a delay duration of several seconds.

Interface 288 fibre channel data is fed to the decoder 144. The switch 280, the buffer 284 and interface fibre channel are under the control of the CPU (Central processor unit) 292 playback module.

As shown in Fig.9, the set of disks a, 272b,..., 272n UCD can be played in parallel. In parallel play several players a, 276b,..., 276n UCD reproduce the various pieces of compressed data, and then these fragments are re-combined in the module 140 playback. Fragments of compressed data come from UCD players a, 276b,..., 276n in the mechanism 296 concurrent read/ordering, which has these pieces of compressed data in the correct order. In a preferred embodiment of the present invention the mechanism 296 ordering of t is made by a software module, has access module 140 playback. As shown in Fig.9, the mechanism 296 ordering has access CPU 292 module 140 playback. The mechanism 296 ordering can be placed in the CPU 292. In order to ensure error-free playback mechanism 296 ordering also performs the function of checking for errors. Fragments of compressed data may contain redundant information in case any part of the disk can't be read, or the integrity of the compressed data is broken. In such cases, the mechanism 296 ordering may use redundant information to recover the lost data. Redundant information and sequence data can be stored on a separate UCD disk and read in parallel with other drives a, 272b,..., 272n, containing compressed information.

In the embodiment of the present invention, which is an alternative to two variants of implementation Fig and Fig.9, instead of a single set of players UCD you can use the tape drive UCD. Shown in Figure 10, the cassette 300 drives UCD for his work similar to the well known tapes discs CD (CD-ROM). In the cartridge 300 drives UCD fit multiple drives. Software control module, located in the device 136 storage information module 140 playback is whether the CPU 292, ensures proper installation of the drives and the access sequence to them. Multiple disks are served by one player UCD. Mechanism 304 switching, similar to that shown Fig, controls the order of the installation disk into the player UCD. In the embodiment of the present invention, based on the use of tape drives UCD, you can implement both serial and parallel mode.

Figure 11 shows the module 132 management of cinema that uses one or more removable hard drives (SZD) 308. For reasons of speed, capacity, and facilities may be desirable to use more than one SZD 308. When serial data is read some SZD able to perform proactive reading, which anticipates the following command read based on the prehistory of the read commands. Such proactive reading is useful as it reduces the time required to sequentially read data from the drive. However, if SZD receives an unexpected command read, the time required for disk read inconsistent information may increase. In this case, the use of Northern railway with proactive reading can lead to filling of RAM Northern railway, which will cause the increase in the time access is requested to the information.

Accordingly, the use of more than one SZD is advantageous in that the serial data stream, such as video, can be read faster. In addition, access to stored on a separate SZD second set of information, such as audio program, upcoming movies, data management or advertising has its advantages, because getting this information from one of Northern railway will require more time.

Thus, the compressed information is read from one or more disks SZD 308 in the buffer 284. The buffer RAM 284 OSP module 140 playback with known speed gets fragments of compressed data from the device 136 storing information. The buffer RAM 284 OMT must have sufficient capacity to ensure that the decoder 144 and, as a consequence, the projector 148 had no excess or lack of information. In a preferred embodiment, the capacity of the buffer RAM 284 OMT is from 100 to 200 MB. The use of buffer RAM 284 OMT is particularly important, because at the time of switching from disk to disk, you may experience a delay duration of several seconds.

From the buffer RAM OSP fragments of compressed data received from the network interface 288, which delivers the compressed information to the decoder 144. In a preferred embodiment of the present invention the network is a tuner 288 represents the interface fibre channel arbitration logic.

In an alternative embodiment of the present invention, the image of which separately is not given, network switch running device 128 management cinema receives the output from module 140 playback and sends them to the specified decoder 144. Using a network switch allows you to transfer programs coming from any available module 140 playback on any given decoder 144.

You are viewing the program information extracted from the device 136 information storage and through the device 128 management cinema is sent to the device 132 management cinema. The decoder 144 using information about the secret keys, which have only authorized cinemas, decrypts the data received from device 136 storing information, and decompressive the stored information using the algorithm decompression opposite to the compression algorithm used by the generator 108 of the source data. The decoder 144 converts decompensirovanny image data in a standard video format used in projection systems (which can be both analog and digital), after which the image is projected through an electronic projector 148. Audio information is also uncompressed and served on a sound system 152 cinema for one the temporary playback with the video.

Figure 11 shows the block diagram of the decoder 144. The decoder 144 processes the compressed/encrypted program for its visual projection screen or other surface and the audio playback using the audio system 152. The decoder 144 is running its own controller 312 or device 128 management cinema and contains at least one device 316 to the dissolution of the packets, the controller or the CPU 312, the buffer 314, the device 320 decryption/decompression of the image and the device 324 decryption/decompression of audio. For temporary information storage device 316 to the dissolution of the packages can be applied to the buffer. All of the above components can be implemented on one or more circuit boards. These circuit boards can be placed in the offline case, mounted on or near the projector 148. In addition, to ensure the interface between the controller 312 and/or device 320 decryption/decompression of the image can be applied cryptographic smart card 328, which receives and stores belonging to the specified cryptographic device information about electronic keys.

Device 316 to the dissolution of the packet determines and allocates individual management packs, images, and sound that come from the playback module 140, the CPU 312 and/or device 128 management cinema. Management packs can be sent to the device 128 management cinema, and packets of image and sound - devices 320 and 324 of the decryption/decompression of image and sound, respectively. Reads and writes tend to occur in short intervals of intense exchange.

Therefore, to ensure smooth data flow from device 316 to the dissolution of the packets directly on the projection equipment used buffer 314 large capacity.

The device 128 management cinema configures, monitors the security controls and monitoring subsystem 104 cinema. This subsystem includes external interfaces, modules 320 and 324 of the decryption/decompression of image and sound, the projector 148 and sound module 152. The management information supplied from the playback module 140, the CPU 312, the device 128 management cinema, port remote control or by using a locally entered data, for example from the control panel, installed on the body or chassis module 132 controls the cinema. The CPU 312 decoder can also control electronic keys assigned to each of the modules 132 management cinema. Pre-selected electronic cryptographic keys assigned to each of the modules 132 management cinema, are used in conjunction with detail what Razia about electronic cryptographic keys, which is part of the image data and sound and is used to decrypt the image and sound prior to decompression. In a preferred embodiment of the present invention as a basic functional element or control of the CPU 312 decoder uses standard microprocessor that executes software embedded in each of the modules 132 management of the cinema.

In addition to the above, in the preferred embodiment, the controller 312 decoder configured to communicate or work together with your device 128 management cinema in order to compile reports on the presentations held in each of the screens. Then the information held presentations is available to send to the hub 102 using the reverse communication channel or in a predetermined time, the mobile media device.

The device 320 decryption/decompression of the image receives the image data stream from the device 316 to the dissolution of the packet, decrypts them, and restores the original image for display on the screen. The result of this operation typically results in a standard analog RGB signals, which are fed to the digital projector 148. Typically, the decryption and decompression are performed in real the om time that ensures that the playback of the program in real time.

Steps for decoding and decompression of the image data stream performed by the device 320 decryption/decompression of the image, are the reverse of those operations that the device 184 image compression and device 188 encryption image from the hub 102. Each of the modules 132 management cinema can process and display program that is different from other software modules 132 management movie of the same subsystem 104 cinema, or more modules 132 management cinema can simultaneously process and demonstrate the same program. As an additional option, the same program can be demonstrated multiple projectors, and these multiple projectors are delayed relative to each other.

In the decryption process to restore the image used previously provided unique for each device and changing from program to program electronic cryptographic information together with the electronic keys embedded in the data stream. (The decryption process was described earlier with reference to Figure 4). Each subsystem 104 cinema information about cryptographic keys required for each and the programs for each module 132 management cinema, which allowed the display of this program.

In order to allow the demonstration of some specific program in a specific system, use the multi-level Manager cryptographic keys. Manager multi-level cryptographic keys usually uses the values of electronic keys that are unique for each authorized device 128 management cinema, for a particular video and/or audio program, and/or time-varying cryptographic key sequence comprising video and/or audio programs. "The specific cinema" electronic key, typically a length of 56 bits and more, is programmed in the module 132 controls the cinema.

Such programming can be implemented using multiple modes of transmission and provide information about the electronic keys. For example, to send cryptographic information from the device 124 controls conditional access, you can use the above-mentioned reverse communication channel. Alternatively, you can use smart cards, similar to the smart card 328, pre-programmed flash memory cards, and other well-known mobile media.

For example, you can construct a smart card 328 is so to have recorded on it the value of the key cannot be read from its memory. To prevent and detect unauthorized use of, or extract information about the electronic keys are used for physical and electronic security measures. The key is stored so that it was erased when detecting unauthorized use or tampering. Diagram of the smart card includes a microprocessor core software, part of which is a software implementation of a cryptographic algorithm, the data encryption standard (DES). Microprocessor card capable of storing supplied to her values, encrypt (or decrypt) these values using the built-DES algorithm and pre-recorded key that identifies the cinema, and to produce a result. Alternatively, smart card 328 can be used to transfer encrypted information on the electronic key in the chain subsystem 104 cinema, which in this case will handle this information on the electronic key for use by the processes of decoding the image and sound.

The video data streams are dynamic decompression of the image using inverse algorithm DCARB or other compression process image the supply, symmetric compression process used in the device 112 compression/encryption of the data of the Central hub. If image compression is based on the algorithm DCARB, the process decompression involves decoding variable length, weighted by the inverse of the frequency, inverse differential transform the tree quadrants, indirect cosine transformation (NPC), and the inverse interleaving blocks of discrete cosine transform (DCT). Used when decompressing processing elements can be implemented using specialized hardware configured to perform the specified function, for example, in the form of dedicated integrated circuits (SIMS) or one or more circuit boards. Alternatively, the elements performing the decompression can be implemented by using the standard element database or hardware General purpose, includes all kinds of digital signal processors or programmable electronic devices or computers running special software or firmware. To ensure a high data transmission speeds of videos you can implement parallel processing and what the considerations applying with multiple SIMS.

Decompensirovanny image data subjected to digital-analog conversion, and analog signals are sent to the projector 148. As an alternative, to transfer decompencirovannah image data to the projector 148 you can use a digital interface that eliminates the need for digital to analog conversion.

Device 324 decryption/decompression of audio receives audio data stream from the device 316 to the dissolution of the packet, decrypts and restores the original sound to play through the speaker system theater or sound system 152. The result of this operation is obtained sound signal standard line level, which is fed to the sound system 152.

Similarly, the device 320 decryption/decompression of the image device 324 decryption/decompression sound performs an operation, the reverse of what perform device 192 audio compression and device 196 encryption of sound from the hub 102. Using stored in the cryptographic smart card 392 electronic keys coupled with electronic keys embedded in the data stream, the device 324 decryption decrypts the audio information. Then, the decoded audio data decompressions.

Decompression of sound is used with the em algorithm, symmetric to what was used to compress the audio in the main hub 102. If you have multiple audio channels, all of them are subjected to decompression. The number of audio channels depends on the device sound system of a specific movie or presentation system. To improve the sound quality of the program the main hub 102 may send additional sound channels that can serve the purpose of multilingual audio tracks and provide cues for the audience visually impaired. The system can transmit additional data tracks synchronized with the image, to create a special multimedia effects, subtitles and special visual cues for the audience with impaired hearing.

As described above, audio tracks and data tracks can be synchronized with the video or can be played without direct time synchronization. The video may represent a single frame (still image), a series of individual frames or a series of short or long sequences.

If necessary, the audio channels are fed to the audio item delay, which makes the delay required to synchronize the sound with the corresponding image frame. Then, each Kana is subjected to digital-analog conversion, which sound system 152 receives signals, known as "linear" signals. That is, from the digital data generated analog audio signals with the corresponding level or format, which are used to control the appropriate sound system. Output connectors for linear audio signal is usually applied standard connectors or XLR AES/EBU, which are used in most sound systems cinemas.

The projector 148 shows an electronic representation of the program on the screen. Projectors high quality are manufactured using advanced technologies, such as methods of processing optical or video-based liquid crystal optical valve (GCOW). The projector 148 receives the signal from the device 320 decryption/decompression of the image, usually in a standard format RGB (red-green-blue). Transfer to the projector 148 information management and monitoring is usually performed with the controller 312 via the digital serial interface.

Returning to 11, the chassis of the decoder 144 is composed of a fiber-optic interface 288, device 316 to the dissolution of the packets, the device 324 decryption/decompression of audio and cryptographic smart card 328. Chassis decoder 144 is a protected from the new chassis, which also hosts the interface cryptographic smart card 328, the indoor unit and/or the controller power supply, cooling fans (if necessary), local control panel, and external interfaces. In the local control panel can be used various known input devices, such as flat membrane keyboard with built-in led indicators. The control panel usually represents or is placed on the hatch access to the interior of the chassis, which is used for repair or routine maintenance. To prevent unauthorized access, theft or unauthorized use of the system, this hatch is equipped with a reliable lock. During the installation process containing cryptographic information about electronic keys (unique key cinema) smart card 328 is mounted inside the chassis of the decoder 144 and protected with lockable front panel. Access to the setup port of cryptographic smart card is only possible inside a lockable front panel. Connecting the RGB output devices 320 decryption/decompression of the image to the projector 148 runs inside the chassis of the decoder 144 so that in case of improper installation the chassis of the decoder 144 on the projector to make the access to the RGB signalmessage. To prevent the use of the decoder 144 if it is incorrectly installed on the projector 148 you can use a lockable latches.

Sound system 152 plays the audio portion of the program through loudspeakers cinema. In a preferred embodiment of the present invention sound system 152 is capable of receiving from device 324 decryption/decompression of audio up to 12 audio channels in a standard format, whether digital or analog format.

In another embodiment, the module 140 playback and decoder 144 combined into a single device 332 decoding and playback. The merger module 140 and playback decoder 144 leads to cost savings and reduction in access time, so as to perform functions such as module 140 playback and decoder 144 need only one CPU (292 or 312). Moreover, the merger module 140 and playback decoder 144 eliminates the need for fiber-optic interface 288.

If you want to arrange a viewing in several places, the data contained on any device 136 storing information, prepared for the transmission of compressed data of the same video in different rooms with predetermined programmable shifts or delays with respect to each other. If the program needs of the dem is to StarOffice in several rooms simultaneously, the programmable shift is set essentially equal to zero or very small. In other cases, to provide a very flexible schedule presentations these shifts depending on the configuration and capacity of the storage device can be set in the range from several minutes to several hours. This allows cinema complex is better to follow the requirements of the market, for example, when showing the Prime Minister.

On Fig shows another variant of implementation of the present invention. The user interface 344 provides direct control of the decoder 144 together with the projector 148 and sound system 152. Mine action (a simple array of disks) 348 consists of a magnetic storage device, such as a Bank of hard drives that contain encrypted/compressed encoded signals for planned presentations at the appointed cinemas. To effectively meet the needs of every cinema in the information storage design mine action 348 allows scaling. In addition, in order to prevent loss of recorded programs in case of failures in the storage device each mine action 348 contains a built-in redundancy. Mine action 348 can be a system of rack-mountable devices that can be expanded to ensure the changing needs of ka is Dogo cinema in the volume of stored information. The use of mine action 348 allows the device 128 management cinema dynamically switch run programs between different halls cinema complex and to plan in advance receiving programs. Flexible implementation of this is to quickly respond to changing market demand.

In the preferred embodiment, each mine action 348 has enough data to store programs that are designed to display in this movie. Thus, in one and the same day on the same screen, you can display more than one movie. Besides, there is a sufficient amount of to advance the recording is scheduled to run programs before the official date of their release in the car while storing programs, the output of which have already taken place. This is available free volume allows you to write in to the show allowed for future rental program for hours, days or weeks before the official date of their release in the car without affecting the possibility of renting the current programs. According to the estimate in units of volume digital storage in this device requires about 120 GB of space on each cinema. The specified volume is obtained under the assumption of using modern compression technology and image processing, to ora may change in the near future and, thus, to reduce these requirements.

Disk space for each downloadable in mine 348 programs is allocated dynamically. This concept is acceptable for large movie theaters with multiple screens, since the average duration of short and long programs is a certain nominal value, usually about two hours. As recommendations for theater with one screen, the storage capacity should be sufficient to record the longest program.

In addition, mine action 348 working or able to work in a mode "a distributed recording", in which the information is distributed on the disk array and is temporarily written in the buffer 349 RAM. That is, in the recording process fragments obtained data are distributed to the different disks in the array. One piece of data is sent on one drive, the next fragment is forwarded to another drive, and so on. After a timeout, sufficient to drive recorded data, the disk can be re-queued to receive the input data. Thus, the data are fragmented into blocks or smaller segments that are written to different disks with the maximum (or high) speed, allowing you to take advantage of buffering input in the input to the nale of the disk. It actually allows devices with lower data rate to receive data in parallel, thereby to provide a very high data rate. In addition, the storage device of this kind provides the necessary protection from redundancy errors.

When writing data to disks or other storage devices uses the parity information that allows you to restore the program for the extraction. That is, there is a way to bind the parts of the program during retrieval or presentation.

In the preferred embodiment, each mine action 348 is based on array of inexpensive devices with redundancy (RAID array), which is able to completely restore the data file in case of failure of one disk in the array. In order to troubleshoot and locate failures mine action 348 provides information about the condition and faults. When this kind of device has the capability for remote control, status, and diagnostics.

On Fig shows unit 128 controls the cinema. The device 128 management cinema provides control and monitoring of the entire subsystem 104 cinema or one or more modules 132 management cinema of the composition of the cinema complex. To create the program sets the mm of one or more of the received video and audio products, scheduled for demonstration in the system of cinema within the allowed interval, the device 128 management cinema can be used in the methods or mechanisms for program management.

The device 128 management cinema includes a processor 336 management cinema and additionally may include at least one modem 340 or another connected to a reverse communication channel device, allowing you to send messages to the main hub 102. The device 128 management cinema may include a visual display unit such as a monitor, and the device interaction with the user, such as a keyboard. These elements can be placed in the office of the head of the cinema complex, ticket office or any other convenient from the point of view of cinema.

The processor 336 management cinema is usually a computer of commercial or business class. According Pig and 2 processor 336 management cinema is associated with the device 120 network management and device 124 controls conditional access. In a preferred embodiment of the present invention for connection with the main hub 102 is used, the modem 340. Typically, the modem 340 is a standard modem for use in telephone networks, which is raspolagaetsja inside the processor or attached. For feedback from the main hub 102 this modem is attached to a standard two-wire telephone line. In alternative embodiments, the implementation of the present invention the communication between the processor 336 management cinema and the main hub 102 may be implemented using other low-speed communication methods such as the Internet, private or public data network, wireless or satellite communication systems. For implementation of these alternatives modem 340 is configured in such a way as to ensure the appropriate structure of the interface.

Returning to Figure 2, the device 128 management cinema provides communication between each of the devices 132 management cinema and each of the devices 132 storing information. The interface controller cinema may contain a memory buffer that is designed to ensure that the information in the form of short intense periods of exchanging data at high speed sent from the device 132 storing information via the interface 126 device management, and then at a slower rate processed by other elements of the device 132 management of the cinema.

Information exchanged between the device 128 management cinema, the device 120 network management and/or device 124 controls conditional access, VK is uchet the requests for retransmission of the received subsystem 104 cinema pieces of information, containing not subject to correction of erroneous bits, information management and monitoring, reports, presentations and warnings, as well as information about cryptographic keys. For verification, authorization and protection from listening to the forwarded message can be encrypted.

The device 128 management cinema can be configured to provide a fully automatic operation of the presentation system, including the control of the playback/display, security, and management features network. The device 128 management cinema can also control secondary functions of cinema, such as reservations and ticketing, operations associated with a discount on the price of tickets, and monitoring the environment in the premises. Alternatively, in addition to managing some of the features of the cinema can be used in manual control. In addition, to control and correct some of the above functions, the device 128 management cinema can be associated with other existing cinema complex automatic control systems. The use of a particular system depends on the available technology and the needs of theater.

By controlling l the Bo device 128 management cinema, any device 120 network management present invention in General provides simultaneous playback and display recorded programs on multiple projectors. In addition, under the management device 128 management cinema or device 120 network control, you can authorize multiple playback program, in spite of the fact that the subsystem 104 cinema gets the specified program once. The safety management system can regulate the duration and/or number of sessions each rental program.

Through an automated control unit 128 controls the cinema from the module 112 network management is provided by the automatic preservation and presentation programs. In addition, using the control unit has the ability to remotely manage some set of network operations from a location remote from the location of the main premises, using the control. For example, a TV Studio or film Studio can automate and control the distribution of films or other materials from the Central areas, such as office, Studio, and almost immediately to make changes in programs to respond to rapid changes in demand, to take into account feedback on the program, or because the other is they are available in the art reasons.

Again referring to Figure 2, the subsystem 104 cinema through the network interface 126 to connect to the device 132 management cinema. The network interface 126 of cinema consists of a local area network (electrical or optical), which provides local routing programs within the subsystem 104 cinema. Programs are stored on devices 136 storing information and sent through the network interface 126 of the cinema on one and/or multiple devices 132 management cinema from the subsystem 104 cinema. The network interface 126 of the cinema can be implemented using an arbitrary number of standard architectures, local area networks, with sufficient data transfer rates and provides requirements for connectivity and reliability, such as, for example, a loop with the arbitration logic, or network built using switches or hubs.

Again referring to Figure 2, each device 136 information storage provides local storage of program material, authorized to reproduce and display. In one of the embodiments of the present invention in each individual cinema system uses a centralized data storage system. The device 136 storing information of the cinema provides subsystem 104 kenotia the RA the ability to create presentations for one or more screens and shared by multiple screens simultaneously.

Depending on the capacity of the device 136 storing information of the cinema is capable of storing multiple programs at once. Using local network device 136 storing information of the cinema can be connected so that any one of these programs may be reproduced and displayed on any of the authorised demonstration systems (i.e. projectors). In addition, the same program can be simultaneously displayed on two or more display systems.

Thus, in this document the proposed device and method, decoding, decompression and decryption of the image data and/or sound. These apparatus and method provide a flexible planning of movies and advertising materials, combining signals of sound and image, as well as, among other distinctive features and advantages, a simple implementation of measures of protection and security.

The above description of the preferred embodiments are provided to a person skilled in the art could reproduce or use the present invention. For specialists in the art various modifications of these embodiments will be apparent, and the General principles defined herein may be applied to other variants assests the deposits without the use of additional inventions. Thus, it is assumed that the present invention is not limited to the above variant implementation, and represents the broad scope of protection corresponding to those disclosed in the present description principles and new distinctive features.

1. A device in which compressed encrypted encoded image signals and sound signals representing a video program and a lot of sound programs associated with the video program, are processed to provide demonstrations of the image, and the specified device contains a storage device configured to receive a variety of media, distribution stores mentioned compressed encrypted encoded image signals and sound signals in fragments; a decoder configured to receive fragments mentioned compressed encrypted encoded image signals and sound signals from a variety of media, and to bring the appropriate fragments of the compressed encrypted encoded image signals and sound signals, and the decoder includes a first decoder (device decrypt the data), configured to receive the compressed encrypted encoded image signals from a variety of media, and to decrypt the compressed encryption is avannah coded image signals; the first decompressor (device decompressing data), configured for receiving compressed coded image signals from the first decoder and decompression of the compressed coded image signals for demonstration video; a second decoder configured to receive the compressed encrypted encoded audio signals from a variety of media, and to decrypt the compressed encrypted encoded audio signals; and a second decompressor configured to receive the compressed encoded audio signals from the second decoder and to decompress the compressed encoded audio signals for selective playback of a selected one of the many audio programs synchronously with the associated video.

2. The device according to claim 1, wherein the decoder is configured to separate decryption and decompression of encoded image signals and at least one audio program so that these two processes are independent from each other.

3. The device according to claim 1, in which at least one of the first or second decompressors is configured to decompress the compressed encoded signals compression technology using inverse discrete cosine transform with adaptive block size of the data.

4. Give the TWT according to claim 1, in which the second decompressor is configured to decompress the compressed encoded audio programs with variable speed.

5. The device according to claim 1, in which the coded image signals are in the form of at least one video program, and additionally contain an identifier used to associate one or more audio programs with at least one video program.

6. The device according to claim 1 in which the said image signals and sound signals are sent to a variety of storage media in the form of data packets, and the aforementioned first and second decompressors additionally contain a dissolution device packages, which are designed to extract image signals and sound signals from the data packets.

7. The device according to claim 1, in which the storage device is additionally configured to receive the key that is unique to this device, and the first and second decoders is additionally configured to decrypt the compressed encrypted encoded image signals and sound signals according to the specified conditions unique to that device key.

8. The device according to claim 7, in which the key that is unique to this device, stored on at least one media key separately from Kadirova the different image signals and sound signals.

9. The device according to claim 8, in which the media key is a smart card.

10. The device according to claim 8, in which the key medium is a magnetic disk.

11. The device according to claim 7, in which the key that is unique to this device, is sent.

12. The device according to claim 7, further containing a means of specifying a time interval during which the key that is unique to this device, remains in force, and this mechanism is used to ensure that the key that is unique to this device, used solely within the specified interval.

13. The device according to item 12, in which the key that is unique to this device after a specified time interval is overwritten on the media key.

14. The device according to claim 1, in which the signals additionally contain at least one watermark, and referred to "watermark" practically invisible during the demonstration video or audio program, subject to specified normal data transfer rate, however, becomes visible if the video or the selected sound program demonstrates at a speed significantly different from normal.

15. The device according to 14, in which the watermark is configured to identify information about the time and months the e presentation related video or audio program after decompression.

16. The device according to claim 1, further comprising a control device cinema, and the above-mentioned control device cinema configured to transmit control information to the storage device and the decoder and receiving status information from the device information storage and decoder.

17. The device according to claim 1, configured to establish a communications channel, and the above-mentioned communication channel is designed to transmit information to the outside and receiving information from outside of the device.

18. The device 17, where the information includes information control and status information.

19. The device 17, where the information includes an update video and/or audio programs.

20. The device according to 17, in which the communication channel includes a dedicated channel data using a telephone line.

21. The device according to 17, in which the communication channel comprises a data channel using a telephone line connection on request.

22. The device according to 17, in which the communication channel includes a packet data channel.

23. The device according to 17, in which the communication channel comprises a communication channel with the use of the Internet.

24. The device 17, which is the channel of communication includes wireless communication channel.

25. The device according to 17, in which the communication channel includes a satellite data transmission channel.

26. The device according to claim 1, wherein the media information includes at least one optical storage media.

27. The device according to p in which media contains multiple optical storage media, and in which the image signals and audio programs stored on the optical storage media is inconsistent.

28. The device according to p, in which the audio signals are stored on the optical storage medium different from the one that stores the image signals.

29. The device according to p, optionally containing coded signals representing information of an advertising nature, and in which the aforementioned coded signals representing information of an advertising nature, are stored on optical media, other than those which store the image signals and sound signals.

30. The device according to p, in which the optical storage medium contains at least one disk UCD.

31. The device according to claim 1, wherein the media information includes at least one magnetic storage media.

32. The device according to p, in which the storage medium contains a set of magnetic media, and in which the signal of the image and audio signals are stored on the set of magnetic media is inconsistent.

33. The device according to p, in which the audio signals stored on the magnetic storage medium different from the one that stores the image signals.

34. The device according to p, optionally containing coded signals representing information of an advertising nature, and in which the aforementioned coded signals representing information of an advertising nature, are stored on magnetic media, other than those which store the image signals or audio signals.

35. The device according to p, in which the magnetic storage medium includes at least one removable hard disk.

36. The device according to p, in which the magnetic storage medium contains at least one module of mine action and mine action module contains at least one component for storing information.

37. The device according to claim 1, additionally containing a buffer is used to synchronize playback of the video and selected audio program.

38. The device according to claim 1, wherein the storage device includes a means of using the identification information to associate different pre-selected fragments of the image signals or audio signals with different media.

39. The device according to claim 1, in which the storage device information and further comprises means parallel partitioning information thus to allow access to the image signals or audio signals at the desired data rate and to provide the necessary protection from bugs degree of redundancy.

40. The device according to claim 1, in which at least two storage devices, decoders and decompressors are connected to each other through at least one LAN interface.

41. The device according to p, in which the network interface includes a network the Internet.

42. The device according to claim 1, in which the coded image signals come in the form of at least one video program, and the above video has the appearance of any individual still frame or range of frames displayed as frames of a film with variable length.

43. The device according to claim 1, which is recorded on the storage device, image signals and sound signals are copied to an additional storage medium, which provides the opportunity for multiple presentations of encoded image signals and audio programs.

44. The device according to item 43, wherein the update to the image signals and the audio signals stored on a specified additional media information.

45. The device according to item 44, wherein said at least one additional media information pre what is a internal hard disk.

46. The device according to claim 1, further comprising means for archiving and storage report playing video and audio programs.

47. The device according to claim 1, in which the storage medium stores the coded signals representing the mounting track, and mentioned mounting track sets the fragments of a program, which can be binding information.

48. The device according to claim 1, further comprising reproducing device, and this playback device configured to distribute signals with a pre-selected programmable time shifts relative to each other.

49. The device according to p which includes the pre-selected programmable time shifts essentially equal to zero in order for multiple demonstration video was essentially simultaneously.

50. The device according to claim 1, additionally containing a projector which has a capability demonstration video program represented by the image signals.

51. The device according to claim 1, additionally containing audio playback device configured to play the selected sound program synchronously with a demonstration video.

52. The way in which the compressed encrypted encoded image signals and sound signals, representing a video program and a lot of sound programs associated with the video program, are processed to provide demonstrations of the image, and the above-mentioned method includes the following steps: extracting compressed encrypted encoded image signals and sound signals in fragments from a variety of media; integration of relevant fragments of the compressed encrypted encoded image signals and sound signals; decoding the compressed encrypted encoded image signals and sound signals to obtain a compressed encoded image signals and sound signals; decompression of the compressed encoded image signals and sound signals; and a demonstration video synchronously with the selected one associated set of audio programs.

53. The method according to paragraph 52, in which the steps of the decryption and decompression of image signals and at least one audio program are handled separately and independently from each other.

54. The method according to paragraph 52, in which at the stage decompression applies a compression method using inverse discrete cosine transform with adaptive block size of the data.

55. The method according to paragraph 52, in which the stage decompression is performed with variable speed.

56. The method according to paragraph 52, additionally comprising the following steps: grouping of image signals to form at least one video program; associating one or more audio programs with at least one video program.

57. The method according to paragraph 52, in which the image signals and audio signals are stored on multiple storage media in the form of data packets, and the step of decompressing further includes the step of extracting image signals and sound signals from the data packets.

58. The method according to paragraph 52, further comprising the step of extracting the unique key, and the step of decrypting is performed according to the terms specified this unique key.

59. The method according to 58, wherein said unique key is stored on the media key separately from the image signals and audio signals.

60. The method according to p in which the media key is a smart card.

61. The method according to p in which the media key is a magnetic storage medium.

62. The method according to p, in which the key medium is an optical storage medium.

63. The method according to 58, in which the unique key is sent.

64. The method according to p, further containing the step of specifying a time interval during which a unique key remains in force to ensure that the unique key is used only during the specified interval.

65. The method according to claim 4, additionally comprising the step of overwriting the unique key on the media key after a specified time interval.

66. The method according to paragraph 52, further comprising the step of providing at least one watermark, and the watermark is almost invisible during the demonstration video or audio program, subject to specified normal data transfer rate, however, becomes visible if the video or audio program demonstrates at a speed significantly different from normal.

67. The method according to p, in which the watermark identifies information about the time and place of the demonstration, associated with the video or audio program after decompression.

68. The method according to paragraph 52, further comprising the step of providing a control device of cinema, and this control device cinema transmits and receives the management information and status information relating to the stages of recording, decryption and decompression.

69. The method according to p, further comprising the step of establishing a communication channel in order to transmit and receive information.

70. The method according to p in which information contains information control and status information.

71. The method according to p in which information includes an update as the program and/or audio programs.

72. The method according to p, in which the communication channel is a dedicated channel data using a telephone line.

73. The method according to p, in which the communication channel includes channel data using a telephone line connection on request.

74. The method according to p, in which the communication channel contains packet data channel.

75. The method according to Pb, in which the communication channel provides a channel of communication using the Internet.

76. The method according to p, in which the communication channel includes a wireless communication channel.

77. The method according to p, in which the communication channel includes a satellite data transmission channel.

78. The method according to paragraph 52, in which the information carrier contains at least one magnetic storage media.

79. The method according to p, in which the storage medium contains a set of magnetic media, and the image signals and audio signals are stored on the set of magnetic media is inconsistent.

80. The method according to p, in which the audio signals stored on the magnetic storage medium different from the one that stores the image signals.

81. The method according to p, optionally containing extract coded signals representing information of an advertising nature, and coded signals representing information of an advertising nature, grants the magnetic storage medium, other than those, which store the image signals and sound signals.

82. The method according to p in which the information carrier contains at least one disk UCD.

83. The method according to p in which the information carrier contains at least one removable hard disk.

84. The method according to p in which the information carrier contains at least one module of mine action.

85. The method according to p, optionally containing phase buffering video and at least one audio program to synchronize video and at least one audio program during playback.

86. The method according to paragraph 52, further comprising the step of linking various pre-selected portions of image signals or audio signals with different media.

87. The method according to paragraph 52, further comprising the step of parallel partitioning information into fragments thus, to allow access to the image signals or audio signal at the desired data rate and to provide the necessary protection from bugs degree of redundancy.

88. The method according to paragraph 52, further comprising the step of providing at least one local network interface.

89. The method according to p, in which the network interface includes a network the Internet.

90. The method according to p, is where the coded image signals are provided in the form, at least one video, and this video has the appearance of any individual still frame or range of frames displayed as frames of a film with variable length.

91. The method according to paragraph 52, further comprising the step of copying the image signals and audio programs on the at least one additional media information than is provided by multiple presentations of the video program and the selected audio programs.

92. The method according to p, further comprising the step of saving updates to the coded image signals and at least one audio program on the secondary storage media.

93. The method according to paragraph 52, further comprising the step of archiving and storage report video program and at least one audio program.

94. The method according to paragraph 52, further configured to mark a piece of the image signal or at least one of the sound programs as the place in which you can link information.

95. The method according to paragraph 52, further comprising the step demonstration of encoded image signals representing a video.

96. The method according to paragraph 52, further comprising the step signal with a pre-selected programmable time shifts friend who otnositelno other.

97. The method according to p, in which pre-selected programmable time shifts essentially equal to zero in order for multiple demonstrations of the same video program occurred essentially simultaneously.

98. The method according to p, further comprising the step of playing at least one audio program synchronously with a demonstration video.

99. The method according to paragraph 52, in which the mentioned compressed encrypted encoded image signals and sound signals decrypted and decompressions independently in relation to the image signals and sound signals.

100. A device in which compressed encrypted encoded image signals and sound signals representing a video program and a lot of sound programs associated with the video program, are processed to display an image, and said device includes means taking multiple media, distribution storing compressed encrypted encoded image signals and sound signals in fragments; the extractor compressed encrypted encoded image signals and sound signals from a variety of media; means combining the relevant fragments of the compressed encrypted encoded image signals and sound signals; means Desir is of the compressed encrypted encoded image signals and audio signals; means for decompressing the compressed encoded image signals and sound signals for demonstration videos and selected the playback of a selected one of the many audio programs synchronously with the associated video.



 

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15 cl, 8 dwg

FIELD: cryptographic protocols, in particular, efficient encoding at content level.

SUBSTANCE: method is provided for generation of digital data with cryptographic protection, encoding content and composed into messages. Encoding of at least a part of the message is performed and encoded messages are provided in form of output signal in format, allowing the interface of server service to compose a message in form of at least one packet, including at least one header and useful load, where at least one header includes information, which allows the service interface in the client to assemble each message for decoding application using useful load of packets. Each message is divided onto the first and at least one additional section of the message. At least one of the message sections is encoded in such a way that it may be decoded independently from other message sections. Assembly of encrypted message is performed by addition of resynchronization marker, separating the message section from adjacent message section and including precise information about synchronization, at least for additional sections of the message.

EFFECT: synchronized decoding process in case of data loss.

14 cl, 8 dwg

FIELD: receivers/decoders of services, provided in conditional access mode, in particular, receivers having storage block (memorization device), such as a hard drive.

SUBSTANCE: method is claimed for storing an event, encrypted with usage of at least one control word (CW) in receiver/decoder (STB), connected to safety block (SC), where at least one control word and access privileges for aforementioned event are contained in access control messages (ECM-messages), method includes following operations: recording of encrypted event, and also of at least one ECM-message in storage block; transmission of at least one ECM-message into safety block (SC), verification of the fact that safety block (SC) contains access privileges for aforementioned event, generation of receipt (Q), which contains data related to management of event in reproduction mode, where receipt (Q) contains signature (SGN), generated on basis of the whole ECM-message or its part with usage of secret key (K) contained in safety block (SC) and specific for every safety block, where during later consumption of event the authenticity of the receipt (Q) is verified in prioritized manner compared to conventional access privileges, stored in safety block (SC), storage of aforementioned receipt (Q) in storage block.

EFFECT: provision of method for storing an event.

6 cl, 3 dwg

FIELD: receivers/decoders of services, provided with certain conditions, in particular in a system for accessing an encrypted data stream, priced per time unit.

SUBSTANCE: system contains control center (2), which transmits a data stream through a broadcasting channel, encrypted by means of control words, which are included in composition of access control messages, and meant for receipt by at least one user device (1), connected to safety block (3), having unique address and containing credit, which is reduced with purchase of products or consumption of data stream, where safety block (3) is provided with means for reducing credit for value, dependent on product, or for value, dependent on duration of access to data stream, where aforementioned values and/or duration are determined in access control messages or in conditional access messages, and system contains means, made independent from user device (1), for transmitting identifier, representing a unique number, and price code which indicates size of credit subject to load, in control center (2), and control center (2) additionally contains devices for receipt and verification of price code and for transmission of an encrypted message through broadcasting channel, having a unique address, corresponding to identifier, and giving a command to the safety block (3) to load the credit in defined amount.

EFFECT: development of a new approach to provision of access to paid television for broad clientele, substantially reduced subscriber management related costs.

5 cl, 1 dwg

FIELD: information encryption.

SUBSTANCE: system contains an encrypted data broadcasting centre, at least one control centre, a terminal device, a decoder located between the encrypted data broadcasting centre and the terminal device, the decoder includes an encrypted data reception and decryption module and a data access authority control module; the data access authority control module contains a protection module.

EFFECT: provision of system allowing to simplify access authority control at broadcasting centre level and ensuring optimal data security.

12 cl, 2 dwg

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