Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band (H04N7/08)

System of data transfer, device of transfer, method of transfer, device of reception and method of reception

System 40 comprises a device 41 for recording onto an HD (hard disc) and a module 42 of display, and it applies a data transfer interface HDMI (high-definition multimedia interface). A source 53 of the HDMI of the device 41 for recording onto an HD sends image data (image signal) in the form of differential signals into a consumer 61 of HDMI of the display module 42 via three channels of TMDS (transition minimised differential signalling). The source 53 of HDMI inserts information of content identification, designed for identification of a type of image data content designed for transfer, into a package of VVI InfoFrame, placed in a period of horizontal blanking. A unit 64 of control of the display module 42 controls operation of a unit 62 of reflection processing, which performs processing of image data reflection on the basis of information on the basis of content identification information (PS, ST1 and STO), received by the consumer 61 of HDMI and the display unit 63 for reflection of the image.

Detection of television signals drowned in noise using set of cyclostationarity tools

Disclosed is a method of detecting a television signal which is embedded in a received signal comprising the television signal and noise. First or second order cyclostationarity of the signals may be employed for detection thereof. When first order cyclostationarity is employed, the following method is employed. The method comprises steps of raising sampling frequency of the received signal by a factor N, performing synchronous averaging of a set of M segments of the received signal with the increased sampling frequency, performing signal autocorrelation, and detecting peaks at the output of the autocorrelation function. When second order cyclostationarity is employed, the method comprises steps of delaying the received signal through a constant delay (symbolic time), multiplying the received signal with the delayed version, finding pitch (single frequency) in the output signal.

Device and method to reduce papr in signal of digital broadcasting system preamble

Reserved tones are identified, and certain reserved tones are used to send a signal with a pulse characteristics, in locations of subcarriers, which are not overlapped with a pilot signal of a preamble in a frame. A signal with a pulse characteristic is sent via reserved tones in a symbol interval, for which a preamble is sent.

Creating watermarks in coded information content

Coded information content is received, at least one pre-processed set of watermarks is received and a certain number of bits is directly replaced with an alternative value, starting with a certain position in the coded information content. Said alternative value contains embedded watermark signals, wherein said alternative value is selected from a plurality of alternative values determined by at least one of said set of watermarks. The invention also describes a device and a method of creating a set of watermarks, which involves selecting positions, where the value in the coded information content must be replaced by an alternative value, and calculating a plurality of alternative values for each selected position.

Method for message integration into digital image

Method is based on series of information bits match with bits in bytes of colour presentation, with change of least significant bits in initial image and requiring minimum correction of statistical characteristics of only least significant bits, as a result of accidental nature of matches. Least significant bit is replaced in bytes in initial digital image, besides, flag value "one" is assigned to least significant bit in bytes of initial digital image, if part of digital image signal byte bits and message signal bits match, or flag value "zero" is assigned in case of non-match, at the same time correction of statistics of distribution of least significant bits is made by their remaining part, which is not used as flag values.

Desynchronisation for digital marking of video, resistant to collective attacks

Video subject to protection is desynchronised, and therefore, one or more videos are created with inserted digital distinction marks. In one realisation, the video to be protected, is exposed to time desynchronisation and space desynchronisation. Copy of video is created with distinction marks as modified by means of time and space desynchronisation.

Technology for creation of watermarks in movies

Creation of watermarks in release print (12) of a movie is done by provision of at least one tone of specific frequency on at least one sound track (16) in at least one location, which is unique for this release print. In the typical case arrangement of tone of specific frequency is carried out in location (locations), where tone will have minimum impact at existing sound of sound track. Record of location (locations), in which the tone of certain frequency is found in release print, is saved to provide for the possibility of comparison to tones detected in audio/video record, to identify, whether the sound of illegal carrier was recorded from this particular release print.

Method and device for notification on changes in services

Device and method for a digital transmission system are disclosed, which are designed for sending notification from a transmitter to a receiver or user equipment. The notification can inform a user or subscriber on up-coming events, programs or services, on changes in current events, programs or services, on advertisement, may contain announcements on emergencies etc. In one example, an ESG fragment transmitted to a receiver includes a parametre for indicating that the service associated with the ESG fragment is notification. In another example, the ESG fragment is an access fragment containing a "type" parametre which indicates that the notification associated with the access fragment is a component of the corresponding service.

Matching uniform resource identifier and service guide identifier

Invention relates to communication networks, and particularly to electronic service guides used in communication networks. The technical result is achieved due to that, when transmitting electronic service guide ESG fragments, identifier (ID) values are processed and compared, as well as the version and/or uniform resource identifier (URI) associated with ESG fragments for transmission. ESG fragments are encapsulated into an electronic service guide delivery unit (SGDU) based on processing and comparing values. Similarly, the SGDU can be received in a receiver, data associated with ID values, version and/or URI of the SGDU, and associated ESG fragments can be extracted and compared with already stored values. The SGDU and ESG fragments can be processed in accordance with comparison results.

Stopping sweep when identification is present in broadcast program

Invention relates to a method and a device for monitoring a broadcast signal. A method is proposed for monitoring a broadcast signal (28), involving reception (200) of the broadcast signal (28), where the broadcast signal (28) involves a sweep (23), which is in form of periodical synchronising pulses for controlling an interactive application which is related to the broadcast program; monitoring (202) the broadcast signal (28) on presence of an identification signal (24); and stopping (204) sweep (23) in the receiver if an identification signal (24) is absent in order to prevent the event (304) of execution of the interactive application, when the suitable point in the sweep for the event has not yet been reached. The method also involves restarting sweep (23) only if the identification signal (24) is present.

Method and device for transmitting code set signal when broadcasting data

Invention relates to systems for transmitting code set signals and specifically to a device and a method for transmitting code set signals for naming routes using different languages when transmitting data on a system for encoding characters of route names in a message of a carousel of objects. A client using the method of transmitting code set signals includes a demultiplexer which demultiplexes the packetised elementary stream (PES), which corresponds to a program selected by the user from the broadcast stream which is received by a system interface; an image decoder which decodes the demultiplexed image PES; a sound decoder which decodes demultiplexed sound PES; and a processor which extracts from the demultiplexed message PES information on the transmission code set of the character string used in the message of the carousel of objects, and which decodes the character string used in the message of the carousel of objects based on the extracted information on the transmission code set.

Detection of watermarks by means of correlation analysis of shape

Invention is related to detection of "watermarks" in information signals. Watermark detector (100) detects watermark in information signal. Information signal is correlated with expected watermark (Wi) for each out of multiple relative positions of information signal relative to watermark, in order to produce set of correlation results (64). Correlation results (64) are analysed, in order to identify cluster of correlation results, which exceeds threshold value, moreover, it represents possible correlation peak. If multiple clusters are identified, the most probable cluster is selected for further treatment, while other results are dismissed. Cluster of results may identify correlation peak, which becomes spread due to processing with losses in the process of information signal distribution.

Detecting watermarks

Invention relates to detection of watermarks in information signals. An information signal is proposed, which includes several watermarks (Wi), which together determine the data payload, such as information rights. Detector (100) detects presence (60-62) of each of the several watermarks in the information signal and provides for output (101-103), which can be used for installing (70, 75) payload, presented by watermarks. The degree of confidence in authenticity of the payload, presented by the watermarks, is calculated (110) using information (104-106) from detection stages (60-62). This provides for measurement of the quality of payload for any equipment, which depends on payload results, such as digital rights control system. Information on the form of the correlation peaks, obtained at detection stages 60-62, can be used for outputting the degree of confidence in authenticity of the payload.

Storage of advanced video coding (avc) set of parametres in avc file format

Invention relates to video coding, and particularly, to the advanced video coding (AVC) format for storage of AVC set of parametres in AVC file format. The said result is achieved due to that, use of information of a set of parametres, of the corresponding AVC file involves stages on which: parametre information is embedded, so as to provide for streaming video data, into a file also storing video data such that, parametre information is located in a part of the file separate from video data, so as to allow streaming parametre information independently from video data.

Navigation and information high-precision positioning system

Invention concerns telematic systems. The navigation and information system of high-precision positioning includes a regional television radio transmitting centre, a control terminal, the central processing and an information transfer station, set of spatially distributed user terminals of information input and set of spatially distributed user terminals of reception the information. In addition the navigation and information system includes a navigating information subsystem, a standard speech messages subsystem and an information-advertising messages subsystem.

Linking records of interactive television with applications

Proposed is a method, a device and a computer readable carrier for recording interactive television. Interactive television applications can initiate recording of interactive television content. Interactive television is marked by identification information, linking content with an application, which effected recording, with the objective of controlling access. That way, applications can see which recorded content is related to an application.

Text captions decoder and method for text captions flows decoding

Suggestion refers to test captions decoder (42) which comprises text captions processing unit (411), text viewer (412) and representation controller (415). Text captions processing unit (411) decomposes text captions flow retrieving text data and representation control information. Herewith, text data comprises captions text to be represented in text caption area. After the text captions flow has been decomposed, text viewer (412) visualises text data into raster data using representation control information. Representation controller (415) controls operations of text captions viewer (412) processing unit (411).

Watermark detection

Invention is related to watermark detection in information signal. Watermark detector (100) is suggested, which detects availability of watermark in information signal. Information signal is correlated with expected watermark (Wi) for every out of multiple relative positions of information signal in respect to watermark, in order to obtain set of correlation results (64). Part of correlation results (64) is mutually correlated (82) with information (81) on shape of correlation peak expected in results. Result of mutual correlation (84) is compared to threshold value in unit (85) of peak detection. Threshold value used in this comparison (85) is established by adapted method in compliance with expected shape. Information (81) on expected shape of correlation peak may be based on knowledge of processing operations, which were undergone or have to be undergone by information signal, or on the basis of shape from previous results of correlation.

Watermark detection

Present invention pertains to systems of marking images with a watermark, and particularly to detecting a watermark in an information signal. Proposed here is a detector (100) of presence of a watermark in an information signal. The information signal is correlated with the expected watermark (Wi) for each of set of relative positions of the information signal relative the watermark, so as to obtain a set of correlation results (64). A metric which, is a root-mean-square value, is calculated for the group of results (64). The metric is compared with a threshold value h, which indicates the group representing presence of a correlation peak. The metric can be calculated for groups, created in each position in the result buffer (64). Alternatively, the metric can be calculated only for the group, which is identified as the possible correlation peak.

Method, system and network object for indicating hierarchic mode for traffic streams, transferred during broadband transmission

In a wireless hierarchic broadband transmission, preferably based on DVB-T, one signal can transmit two traffic streams: low priority stream (LP) and high priority stream (HP), and both of them should be identified by their corresponding transport-stream-id. A single bit flag is added to a specific descriptor of broadband transmission to indicate the hierarch of the traffic stream, the information of which is provided by the descriptor. By using this priority indicator or priority flag, the receiver can receive, in accordance with the hierarch of each traffic stream, the broadband transmission information declared at the control.

Method of additional information transmission at fractal coding of images

Invention is related to method of reduction of redundancy of transmitted information. Invention actually consists in creation of method for additional information transmission at fractal coding of images. Transmission of additional information is carried out in the following manner: whenever initial image is compressed with the help of fractal compression method, in indices of domain units orientation binary sequence of three digits is recorded, which represents additional information, then based on this additional information processed domain is turned and brightness coefficients - o and contrast coefficients - s are searched for by method of least squares, which correspond to optimal values, at which the following expression is minimised: where {dij} and {rij} accordingly are values of pixels in domain and range areas, as a result of which optimal domain is found with account of inbuilt additional information for coding of range unit, after that indices of domains, coefficients of brightness and contrast, additional information are sent through communication channel. On receiving side additional information is separated and initial image is restored.

Record medium, playback unit, recording method, integral microchip, programme and playback method

Invention belongs to such record medium as the BD-ROM (blue-ray disc read-only memory), particularly to the systems displaying subtitles and interactive content via graphic means. The AVClip stream recorded on a BD-ROM disc is formed by multiplexing the graphic stream with the video stream. The graphic data stream is a succession of PES-packets, which includes PES-packets with graphic data (ODS segments) (Object Definition Segments) and PES-packets with control information (PCS segments) (Presentation Composition Segments). In each ODS segment, the values of DTS-score (decoding time score) and PTS-score (presentation time score) refer to the decoding start and stop moments for respective graphic data. In each PCS-segment, the value of the PTS-score refers to the time moment where the respective decoded graphic data is combined with the video data stream.

System for capture and selective reproduction of broadcasting programs

Invention is related to systems for capture and selective reproduction of broadcasting programs. Creation of system and method that present a wide choice of archiving and viewing options to spectators, and which provide observance of rules and limitations that are imposed by providers of broadcasting content, which is achieved at the account of the fact that device of broadcasting programs storage for further transmission to subscribers, contains facility for acceptance of data stream of broadcasting channels, which contain multiple subsequent programs, and facility for data storage, moreover, video and audio data that are related to every program, are separated from accepted data stream on broadcasting channel and are stored in data storage facility in known position, at that official information that is related to every program, is separated from data stream and stored in known position in data storage facility with data, which identifies position in storage facility, in which video and audio data of program are stored.

Water-mark indication of signal with bits variable flow

Invention relates to the devices and methods for implementation and detection of water-marks in information signals. One proposed method and device of water-mark implementation in information signal (MPin), when administration of water-mark implementation process is fulfilled with, at least, one parameter of implementation. Implementation parameter value depends on transfer bit speed on information signal (MPin), and, at least, water-mark signals stability and its observability.

Method of transmission of additional data in combined use of vector quantisation and fractal conding of images allowing for classifications of domains and units from code book

Invention relates to communication, in particular, to reducing the message redundancy. The developed method allows transmitting additional data without increasing the volume of transmitted data with the transmission rate left intact. First, the initial image is separated into not overlapping range units to be classified. Here, note that every range unit is refereed to one of the three classes, and the said classification is applied to the domains and units from the code book as well. Additional data is entered into lower category of the domain or units indices, to the rest categories of indices of the domain of the initial image or units from the code book applied is the trial inversion procedure. Now, the domain indices and units from the code book are optimised to be transmitted, along with the data on indices of their orientation, over the communication channel. The receiving party isolates the additional data and restores the initial image.

Method of signal transmission with time slotting parameters in service information

Said utility invention relates to a method of signal transmission in a digital television network. The ground digital television network is used for the transmission of IP datagrams to receiving devices using multiprotocol encapsulation (MPE). MPE datagram sections and, if using the forward error correction (FEC), MPE FEC datagram sections are transmitted in time-slotted packet signals. The time slotting parameters determining the minimum time between packet signal transmissions, and data output from the time slotting buffer of the receiving device at the transmission bit rate are used to save power and enhance the quality of service.

Import control of content

Method for controlling import of content into a domain comprising number of devices consists in checking for the presence of a domain watermark in the content, and if the domain watermark is found in the content, refusing import of the content into the domain, and if the domain watermark is not found in the content, allowing import of the content into the domain and causing the domain watermark to be embedded into the content. Optionally, re-importing into the "original" domain might be allowed. The method further comprises refusing import of the content into the domain if the domain watermark is found in the content unless the identifier matches an identifier for the domain. Other payloads in the domain watermark can be used to e.g. implement location- or time-based restrictions on import.

Method for transmitting additional information during combined usage of vector quantization and fractal encoding of images

In accordance to the invention, during encoding of image by means of combined usage of vector quantization and fractal compression method, additional information is integrated into lower bits of domain indexes or code book blocks. Testing inversion procedure is applied to remaining bits of domain indexes of original image or code book blocks. After integration of additional information and optimization of domain indexes and code book blocks, these data together with information about indexes of their orientation, brightness and contrast coefficients are transferred through a communication channel. At receiving side, additional information is extracted and original image is restored.

System and method for identification and insertion of advertisement into broadcast programs

In accordance to method, broadcasting data stream is received, advertisement is identified in broadcast data stream and schedule of advertisements is renewed, including information, identifying advertisement and position of advertisement in program for broadcast data stream. During reproduction, advertisement or substituting advertisement are inserted into program in aforementioned position or different position in program.

Method for transferring additional information during fractal encoding of image

In accordance to method, during encoding of image by means of method of fractal compression, into lower bits of domain indexes, additional information is inserted. To remaining bits of indexes of source image domain, sample inversion procedure is applied. After building in additional information and optimization of domain indexes these data together with information about domain orientation indexes, brightness and contrast are transferred via communication channel. At receiving side, additional information is separated and original image is restored.

Method and device for command transfer

In accordance to method, watermark is formed, containing inbuilt control command, which should be executed by device being controlled, control command being related to representation of advertisement, signal is generated, containing watermark, inbuilt in information block represented by it and transferred into device being controlled, generated signal is transferred with watermark into device being controlled for showing advertisement to user by executing control command, related to showing advertisement, user is questioned to determine his preferences and on basis of questioning user profile is generated with consideration of sales data for devices being controlled, product identification is added to control command, while control command contains value of parameter, specific for advertisement, while device being controlled receives advertisement, wherein parameter values are used.

Communication system, transmitter, receiver and method for using a descriptor of data being saved

Communication system provides identification of multiply used data in transmitter by means of data descriptors, inserted into data stream being transferred from transmitter to receiver, data stream, being received at receiving end, is analyzed to detect presence of data descriptors, which signify presence of multiple use data, when such a descriptor is detected, it is locally saved at receiver level jointly with data to which it is related, and multiple use data saved in such a way may be utilized not only immediately after receipt at receiving end, but also later, without need to request transmission from the transmitter.

Interactive video equipment and method for applying subtitles to image by means of said equipment

Control level of interactive video equipment receives information from user about subtitles necessary to be generated, in the coder of interactive video equipment on transferring assembly following stages are performed: receipt of information about subtitles from control level and following generation of subtitle image on transparent background in accordance to aforementioned received information; application of aforementioned image of subtitles to digital service image before encoding, sent from transferring node, with production of digital image, mixed with image of subtitles, and encoding of aforementioned mixed digital image with its following transmission to remote node.