Computerized technology for interactive digital broadcast television
FIELD: technology for broadcast transmissions of digital television, relayed together with multimedia applications.
SUBSTANCE: method includes transmission of digital signal, having additional data flow, appropriate for compressed video images and data flow, appropriate for at least multimedia application, and also service signals, meant for controlling aforementioned data flows, service signals is determined, appropriate for series of synchronization signal, including series, meant for assignment of multimedia signal, meant for recording execution parameters of aforementioned assigned multimedia application, after that multimedia application is loaded and multimedia application is initialized with aforementioned execution parameters.
EFFECT: possible interactive operation of multimedia application with user.
2 cl, 2 dwg
The present invention relates to the field of interactive digital television.
More precisely, the present invention relates to the field of broadcast transmission of digital television broadcast, for example, via satellite or cable together with multimedia applications such as screens, computer games, questionnaires for surveys etc
The prior art includes patents ER, disclosing a method of transferring application data in the digital transport stream, which differs in that it enables the transfer of data tables application containing information related to applications that are executed for each type of service functions in the transport stream. Table of application data may be composed of a fixed value of ID (PID) of the package and the extension value of the identifier (TID) of the table, which varies depending on the selected set of service functions. The use of simple data tables application for transfer of information for all service functions in the set are several advantages, in particular when deciding on the maintenance of certain applications when switching between service functions.
Also known U.S. patents US5768539 and US5666293 related to dynamic programmirovaniya entertainment terminal. This terminal can be reprogrammed on request for each service functions offered by one or more service providers. The terminal includes a network interface module that connects the terminal with a specific type of data network, providing the possibility of wideband digital channel and the exchange of control signals between the terminal and the network. The terminal also comprises a control processor connected to the program memory. Control processor receives signals entered by the user, and manages the terminal and the exchange of control signals through the channel exchange of control signals. In the storage device programs write data received through the broadband digital channel in the form of software that can run the control processor. Digital information received in compressed form via a broadband digital channel, converted video/audio processor signals intended to control audio/video display device, such as a standard television receiver. The control processor executes the received software and writes it to the storage device to control when you resume predpochtitelnei implementation of the terminal, including the management of certain functions of the audio/video processor and at least some response to information entered by the user.
The present invention generally relates to a computerized method of using interactive digital television broadcasting, and such television broadcasting carried out using a digital signal containing a first data stream corresponding to the compressed video images, and a second data stream corresponding to the at least one multimedia application and service signals intended to control the flow of data, and according to the invention the specified control includes a step of determining the parameters of the service signal corresponding sequence of synchronization signals, including:
- the sequence is highlighted to indicate multimedia applications present in the digital signal,
the sequence allocated to the recordings, to perform the specified designated multimedia applications, and the method according to the invention includes a step of retrieving multimedia applications and initialization multimedia applications with performance parameters.
Preferably, the method, in accordance with the present image is Itanium, includes a preliminary step of determining the identifier of the application, designed to enable the download of the application corresponding to the specified ID.
In one embodiment of the present invention the method includes a step of unloading the application, which can be activated by the command invoked by the user.
Preferably, the method in accordance with the present invention includes a step of unloading the application, which can be activated by a service signal transmitted in a digital television signal transmission.
In accordance with a particular preferred implementation of the invention, the specified service signal, activates the unloading applications, consists of a signal "pulse synchronization", one of the sequences of which represents, for example, the sequence type "Pause".
The present invention also relates to a computerized method of using interactive digital television broadcasting by transmitting a digital signal containing a data stream corresponding to the compressed video images, and the data flow corresponding to the at least one multimedia application, together with the service signals intended for the management of these data streams, and this is the control according to the invention includes the use of algorithmic tools, intended for determining the service signal corresponding sequence of synchronization signals, the use of algorithmic tools designed to highlight data from the sequence corresponding to the application, and the use of algorithmic tools designed to download multimedia applications in the memory of the computer terminal together with an algorithmic tool for the initialization of these multimedia applications with performance parameters.
The characteristics and advantages of the present invention will be clear to the person skilled in the art from the following description of a particular non-limiting example of implementation, which is carried out with reference to the accompanying drawings, on which:
figure 1 depicts schematically the service signal "pulse synchronization", figure 2 schematically equipment intended for use in the present invention.
The present invention relates, in particular, to a method of retrieving multimedia applications in random access memory terminal of the decoder for receiving a signal, referred to in the present description, the "pulse synchronization".
A multimedia application may consist of, for example, of:
graphics, text, or video advertising screen, the condition is set out in a public place;
- configured advertising;
games or questionnaire;
- video or graphic animation.
The application record before transmitting the digital television signal service signal, having the General structure shown as an example in figure 1.
In the described example, the sequence contains three zones from 1 to 3 corresponding to the MPEG standard. The sequence contains the source zone 1, which is intended to identify tables, zones 2 and 3 are intended to define the tables and, in particular, the length of the table, zone 4, is used to denote the channel, the first zone 5, intended to identify the first application file, and an auxiliary zone 6, which contains the application settings, as well as additional zones 7 and 8, designed to identify additional applications and settings.
The files of the application is passed in stream satellite signal, together with the synchronizing pulse, but apart from it.
The program to use this sequence is loaded into the memory of a decoder enabling decoder.
When you select the channel and change channels during a cursory view channels, program sequence identifies the sequence of synchronization signals and starts downloading recorded the CSOs in the sequence of application online storage device. After full loading of the application program, in accordance with the present invention, includes the application may, after initialization parameters recorded in the sequence "pulse synchronization".
After downloading the application, it can change the program to use the online storage device to optimize the resources of the storage device. The application may contain a module designed to determine the special sequence "pulse synchronization". The definition of this sequence includes unloading the app and re-download the program.
When the application is included in the work programme, it automatically initializes and enables the program to work interactively with the user.
When the application is terminated, the program is reactivated to resume capture "pulse synchronization".
Applications can be of arbitrary shape. They may include a display for interactive advertising screen, installed in a public place, offering users to select another channel by pressing the button on the remote control, or include configurable display advertising, offering to send this information to the user pressing and the additional button.
The same sequence of "pulse synchronization" may correspond to several different service functions. The digital value in the zone 4 identify the channel ID can be used for filtering required to select properties.
Figure 2 shows schematically a device for implementing the method according to the present invention.
The television transmission is under the control of editors in the digital signal 10 using lines of communication with the broadcast server 11. This server also accepts files 12 corresponding to the application. In addition, the editor sends the data corresponding to the synchronization of the various elements, in particular, information on the gear change event service signal "pulse synchronization". All data streams are multiplexed by the multiplexer 14, and then made their broadcast.
There is a decoder 20, which includes a computer 16, which processes the data from the primary storage device 17, in which is recorded the program user. Random access memory 18 and, possibly, primary storage device 17 can be used for temporary entry applications downloaded from the sequence "pulse synchronization". Tool 19 remote the traditional management can be used to interact with this application.
1. The way of using interactive digital television broadcast decoder user, comprising the step of receiving an interactive digital television broadcast in the form of a digital signal containing a first data stream corresponding to the compressed video, and the second data stream corresponding to at least one multimedia application and service signals intended for the management of these data streams, characterized in that it includes when the channel selection step of determining the service signal corresponding to the synchronizing sequence, including the sequence that defines the purpose multimedia applications, and the sequence defines the parameters of the execution of multimedia applications, the stage of downloading multimedia applications in random access memory terminal of the decoder the initialization phase of a multimedia application with the specified performance parameters and launch multimedia applications to provide interactivity with the user.
2. The method according to claim 1, characterized in that it includes a preliminary step of determining the ID of a multimedia application designed to enable downloads multimedia application corresponding to the specified ID.
4. The method according to claim 1 or 2, characterized in that it includes a step of unloading multimedia applications, which can be activated by a service signal transmitted in a digital signal.
5. The method according to claim 4, characterized in that the specified service signal, activates the unloading multimedia applications, consists of a signal "pulse synchronization", one of the sequences of which represents a given sequence.
6. A decoder including a processor associated with the memory and configured to receive interactive digital television transmission in the form of a digital signal containing a first data stream corresponding to the compressed video, and the second data stream corresponding to at least one multimedia application and service signals intended for the management of these data streams, characterized in that it further configured to, when a channel is selected, determine the service signal corresponding to the synchronizing sequence, including the sequence that defines the purpose multimedia applications, and the sequence, determine lawsou execution options multimedia applications, download multimedia applications in random access memory terminal of the decoder initialization multimedia applications with the specified performance parameters and run multimedia applications to provide interactivity with the user.
FIELD: digital communications, in particular digital television.
SUBSTANCE: method for transferring digital information in digital communications network, containing multiple transport flows, each of which transports at least one table concerning a group of services, containing information, concerning certain commercial group of services, includes transfer in one of said transport flows of at least two different tables concerning groups of services, each of which contains information, concerning appropriate separate commercial group of services, and also transfer in current transport flow of at least one other table, containing - for at least current transport flow - a list of values identifying groups of services, to make it possible to match said at least two tables concerning groups of services with appropriate transport flow and make possible a loading from current transport flow of appropriate one of tables concerning groups of services.
EFFECT: higher efficiency.
3 cl, 6 dwg
FIELD: methods and devices for additional data insertion in and extraction from audio signals.
SUBSTANCE: proposed procedure for inserting additional data such as watermarks in audio signals and extracting them from compressed audio signal involves separation of audio signal during insertion of additional data into frames, generation of set of prediction filtration factor for each frame, prediction coding of each frame using mentioned coefficients, and for inserting additional data at least one of chosen filtration factors is adjusted to equal value of these additional data. In this way any impact on bit transfer speed is made absolutely impossible.
EFFECT: provision for reading additional data without decoding entire audio signal or impairing quality of music.
7 cl, 3 dwg, 3 tbl
FIELD: communication systems.
SUBSTANCE: transfer system for transfer of transport flow of MPEG-2 standard from transmitter 10 to receiver 14, having check channel 16, along which receiver 14 can transfer selection criterion for selection of information blocks of MPEG-2 standard to transmitter 10, transmitter 10 has selector 38, which receivers required criteria and then filters information blocks in accordance to these criteria prior to transfer.
EFFECT: higher efficiency.
4 cl, 3 dwg
SUBSTANCE: device has blocks: first interface block, providing receipt of data about switching of programs by subscriber, electronic watch block, first memory block for archiving data about time of viewing of each selected program, second memory block, containing electronic addresses of broadcast companies, block for rearranging data about viewing time, processor, forming packet of data about which TV program and time of its viewing, third interface block, providing output along phone network of data about viewing time of each TV program to server of company, which broadcast current TV program.
EFFECT: higher efficiency.
SUBSTANCE: device has scaling block, two delay registers, block for forming pixel blocks, buffer register, block for calculating movement vectors, two subtracters, demultiplexer, enlargement block, pulsation filtering block, mathematical detectors block, multiplexer, reverse scaling block, as a result of interaction of which it is possible to detect and remove some series of TV frames from programs, which cause harmful effect to viewer, specifically pulsations of brightness signals and color signals with frequency 6-13 Hz.
EFFECT: higher efficiency.
SUBSTANCE: proposed local network 10 has subscriber leads 21 coupled with cabletelecasting head station 11 in desired carrier band. Network 10 also has noise suppression unit 21 whose input 24 is connected to leads 21 and output, to station 11. Unit 23 has band filters 28 - 31 connected to input 24 and using different passbands and transducers 32 - 35 designed for comparing output signal level of respective filter 28 - 31 with preset reference level and for feeding comparison result dependent logic signals to logic control unit 36 that functions to find out if these signals comply with conditions stored in unit 36 so as to convey control signal to unitized interlocking circuit 26 inserted in separate line 25 used to transfer signals from input 24 to output 27. Circuit 26 passes signals when logic signals received by unit 36 meet conditions stored therein.
EFFECT: provision for integrating interlocking means of noise-suppression unit in unitized interlocking circuit common for all carrier passbands.
9 cl, 2 dwg
FIELD: cable television.
SUBSTANCE: system is made with possible reversed transfer of signals to local networks, included in system, back to main station of system in preset range of carrying frequencies, system has means for controlling interference, which include detection means, which are made with possible comparison of signals power level to one preset control level, and with possible generation of logic signals, memory devices, and also means in main station of system, using which information stored in memory means of local networks can be queried for transfer to main station for estimating this information at main station.
EFFECT: higher efficiency, broader functional capabilities.
10 cl, 3 dwg
FIELD: terminals for processing digital audio-video and multimedia data.
SUBSTANCE: device has decoder for receiving transmitted data, data-processing system and memory, while data-processing system stores data of user profiles, related to parameters or preferences of multiple users of terminal. Also, user profiles match terminal operation modes, and profiles data include data about priorities, pointing out rights of each user for using terminal resources.
EFFECT: higher efficiency, broader functional capabilities.
2 cl, 7 dwg
FIELD: technology for recording and reproducing video data, and also hypertext data.
SUBSTANCE: prior to recording on data carrier, video data, primarily encoded by main method, are decoded and information about video data properties is extracted, decoded video data are encoded by method, different from original method and video transformation information is produced, which should be used for displaying video data in original state on basis of information about properties, and generated video transformation information is recorded together with recoded video data on data carrier.
EFFECT: correct reproduction of video data and data with hypertext, even if video data were repeatedly encoded by different method and recorded.
9 cl, 18 dwg