Method for generation of digital broadcasting transport flow pack for improved efficiency of reception, digital broadcasting transmitting device and method of signals processing in it

FIELD: information technologies.

SUBSTANCE: method is proposed for generation of digital broadcasting transport flow pack, including formation of transport flow pack comprising filling area for insertion of available data of subsidiary reference sequence (SRS), randomisation of pack, which includes filling area, and SRS-data is inserted into filling area of randomised packet, addition of parity for correction of errors in pack, where SRS-data is inserted, pack, in which parity has been added, is alternating, and its trellis coding is carried out. Signal of segment synchronisation and signal of field synchronisation are inserted into pack produced by trellis coding, and modulation is carried out with vestigial sideband (VSB) and RF-transformation of pack for transfer of VSB-modulated and RF-transformed pack.

EFFECT: improved efficiency of reception in receiving system and support of compatibility with existing digital broadcasting transmitting receiving system.

23 cl, 14 dwg

 

The technical field to which the invention relates

Aspects of the present invention relate to a method of formatting package digital broadcast transport stream, the digital broadcast transmitting device and to a method of processing signals, and more particularly, to a method of formatting package digital broadcast transport stream, the digital broadcast transmitting device and to a method of processing signals in it, which allow to increase the efficiency of the reception in the receiving system and to maintain compatibility with the existing system due to the formation of the field of adaptation in the packet of the transport stream and inserting known data (i.e. an auxiliary sequence (hereinafter referred to as SRS)in the position of the field of adaptation.

The level of technology

Modulation system with partially suppressed sideband Committee advanced television systems (ATSC VSB), which is the American system of digital terrestrial broadcasting is a broadcast system type of the carrier signal using the signal field synchronization block 312 segments. Figure 1 is a block diagram illustrating the structure of the transmitting/receiving device of the ATSC DTV as a General of the American system of digital terrestrial Shiro is obamania. The digital broadcast transmitting device of figure 1 includes randomization 110 for randomization transport stream (TS) MPEG-2 (Expert group on the film image 2), the encoder 120 reed-Solomon (RS) to add RS-parity bits in the transport stream (TS)to correct errors in the bits resulting from the properties of the channel during transportation. Interleaver 130 punctuates the RS-coded data according to a given pattern. Trellis encoder 140 converts peremerzanie data in an 8-level symbols by performing trellis encoding perenesennyj data at a rate of 2/3. The digital broadcast transmitting device performs encoding with error correction transport stream MPEG-2.

The digital broadcast transmitting device additionally includes a multiplexer 150 to insert the signal segment synchronization signal field synchronization encoded with error correction data. The modulator/RF Converter 160 inserts the control tone in the character data, in which the inserted signal segment synchronization signal field synchronization by inserting these DC values in the data symbols, performs a VSB modulation of the data symbols by generating pulses of character data and converts with increasing frequency moduleref is installed the data symbols in the signal band RF channel, to transmit a signal band RF channel.

Accordingly, the digital broadcast transmitting device endomysium transport stream MPEG-2, performs external coding the randomized data through the RS-encoder 120, which is an external encoder, and distributes the coded data through the interleaver 130. In addition, the digital broadcast transmitting device performs internal encoding perenesennyj data in blocks of 12 characters through a trellis encoder 140, converts internally encoded data in an 8-level symbols, inserts the signal field synchronization signal segment synchronization in the coded data, performs a VSB modulation of the data by inserting the control tone in the data, and then performs the increase with frequency conversion of the modulated data into an RF signal to output the RF signal.

The digital broadcast receiving device of figure 1 includes a tuner (not illustrated) to convert with decreasing frequency RF signal received through a channel into a baseband signal. The demodulator 220 performs synchronous detection and demodulation of the converted baseband signal. Corrector 230 compensates channel distortion of the demodulated signal arising from Mnogotochie the distribution. Lattice decoder 240 corrects the error corrected signal and decodes the corrected signal to obtain character data. Facing interleaver 250 reorder the data, distributed by the interleaver 130 digital broadcast transmitting device. RS-decoder 260 corrects errors, and reverse randomization 270 back endomysium data corrected through the RS decoder 260, and outputs the transport stream MPEG-2.

Therefore, the digital broadcast receiving device of figure 1 converts with decreasing frequency RF signal into a baseband signal and corrects the converted signal, and then performs channel coding of the demodulated signal to recover the original signal.

Figure 2 illustrates a VSB frame data for use in the system of the American digital broadcast (8-VSB), in which the inserted signal segment synchronization and signal field (vertical) synchronization. As shown in figure 2, one frame consists of two fields. One field consists of one segment of the field synchronization, which is the first segment and 312 data segments. In addition, one segment in the VSB frame data corresponds to one packet MPEG-2 and consists of a signal segment synchronization of the four symbols and 828 data symbols.

In figure 2 the signal segment is the synchronization, and signal field synchronization are used for synchronization and correction in a digital broadcast receiving device. I.e. the signal field synchronization signal segment synchronization pertain to data known to the digital broadcast transmitting device and the receiving device, which are used as the reference signal when the correction is performed on the side of the receiver.

The invention

The technical problem

As shown in figure 1, VSB-system American digital terrestrial broadcasting is a system with one carrier and, thus, has the disadvantage that it is weak in a channel environment with multipath fading with Doppler effect. Accordingly, the efficiency of the receiving device to be heavily influenced by the performance of the corrector to remove multipath fading. However, according to the existing transport frame, as shown in figure 2, because the signal field synchronization, which is a reference signal corrector, appears once every 313 segments, the frequency is relatively low compared to the signal of one frame, and this tends to deteriorate the efficiency of correction.

I.e. for an existing corrector difficult to estimate the signal with a small amount of data, as described above, and to adjust the received signal by removing multipath Zam is Rania. Therefore, the conventional digital broadcast receiving device has the disadvantage that the efficiency of the reception deteriorates in adverse channel environment, especially in a channel environment with Doppler fading.

Technical solution

The aspect of the present invention is to provide a method of formatting package digital broadcast transport stream and the method of signal processing of the digital broadcast transmitting device that allows you to maintain compatibility with existing digital broadcast transmitting/receiving system.

Additional aspects and/or advantages of the invention partially set out in the following description and partially made it clear from the description or can be learned in the practical use of the invention.

The aforesaid and other objectives and/or advantages are substantially realized by providing a method of formatting package digital broadcast transport stream (TS)comprising the header and the payload, which contains the insert known data auxiliary reference sequence (SRS) in the package.

According to the aspect of the invention, the package also includes the field of adaptation and SRS data is inserted at least in part the motion field of adaptation.

According to the aspect of the invention field of adaptation includes an optional field that is included on the selection, and SRS data is inserted at least in part of the field of adaptation, in addition to optional fields.

According to the aspect of the invention an optional field is at least one of the time stamp programs (PCR), the original time stamp programs (OPCR), the counter bonding, the length of the transport private data length and expansion of the field of adaptation or combination of the above.

According to the aspect of the invention SRS signal is used for synchronization and/or channel correction.

In another aspect the present invention provides a digital broadcast transmitting device, which includes forming unit packages to bundle transport stream, which includes filling the area to insert it known data auxiliary reference signal (SRS); randomization for randomization package, which includes a fill area; block insert SRS to insert SRS data into the fill area of a randomized package; encoder reed-Solomon (RS) to add a parity for error correction in the package in which is inserted SRS data; an interleaver to interleave the package, which adds parity; trellis encoder to perform trellis is tiravanija peremienko package; a multiplexer for inserting signal segment synchronization and signal field synchronization packet received trellis coding; and a modulator/RF Converter to perform modulation with partially suppressed sideband (VSB) and RF-transform of the output signal of the multiplexer to pass the VSB-modulated and RF-converted signal.

In still another aspect, the present invention provides a method for signal processing for a digital broadcast transmitting device, which includes forming a packet of the transport stream, which includes filling the area to insert it known data auxiliary reference signal (SRS); the randomization package, which includes the isolating region; insert SRS data into the fill area of a randomized package; adding a parity for error correction in the package in which is inserted SRS-data; interleaving package, which adds parity; performing trellis encoding peremienko package; insert signal segment synchronization and signal field synchronization in the packet received trellis coding; and performing modulation with partially suppressed sideband (VSB) and RF-convert package to pass VSB-modulated and RF-converted package.

Benefits

As described above, according to aspects of the present invention, the efficiency of receiving digital broadcast receiving device can be increased even in poor channel with multipath propagation due to the formation of the field of adaptation, which includes filling the area in the packet of the transport stream MPEG-2, and insert the SRS signal in the filling region of the digital broadcast transmitting device, and for detecting the SRS signal from the received signal and using the detected SRS signal for synchronization and correction in a digital broadcast receiving device.

According to aspects of the invention provides for a system that is compatible with the existing American digital broadcast transmitting/receiving system and which functions efficiently. Although the description in respect of the broadcast signal transmitted by radio or cable, it is understood that in other aspects of the invention, the transmission can be performed by the media for delayed playback.

Description of the drawings

Data and/or other aspects and advantages of the invention shall become more apparent and obvious from the following description of embodiments, taken together with the accompanying drawings, of which:

F is 1 - a block diagram illustrating the structure of a conventional digital broadcast (ATSC VSB) of the transmitting/receiving device;

Figure 2 is a view illustrating the structure of a conventional data frame ATSC VSB;

Figure 3 is a view illustrating a package structure of a transport stream;

4 is a view illustrating the structure of the adaptation field header of the transport stream;

Figure 5-9 view illustrating the various formats of the data packet of the transport stream MPEG-2, which includes the field of adaptation, which are added to fill the bytes according to aspects of the present invention;

Figure 10 is a block diagram illustrating the structure of a digital broadcast transmitting device according to a variant implementation of the present invention;

11 is a block diagram illustrating the structure of a digital broadcast transmitting device according to another variant implementation of the present invention;

Fig view illustrating input type MPEG-package according to the aspect of the present invention;

Fig is an exemplary view illustrating the structure peremienko package according to a variant implementation of the present invention; and

Fig - block diagram of the sequence of operations illustrating a method of signal processing for digital wide the broadcast transmitting device according to a variant implementation of the present invention.

The best mode of carrying out the invention

Following is a detailed reference to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, in which same reference items refer to the same elements throughout the description. Options for implementation are described below to explain the present invention with reference to the drawings. In addition, well-known functions and structures are not described in detail so as not to hinder the understanding of the invention with unnecessary details.

3 and 4 illustrate the structure of the MPEG packet according to the MPEG system, which is used in standard digital television ASTC. As illustrated in figure 3, MPEG-package includes a synchronization byte, 1-bit transport error indicator package, 1-bit indicator start of block of useful data, 1-bit flag priority shipping, 13-bit PID (packet identifier), a 2-bit control indicator transport scrambling, a 2-bit control indicator field adaptation and a 4-bit continuity counter. Useful data and/or field adaptation follows shows a 4-bit continuity counter.

As illustrated in figure 4, information such as time stamp programs (PCR), an original time stamp about the PAMM (OPCR), the countdown bonding, the length of the transport private data length of extension of the field of adaptation, is transmitted in MPEG-package with optional fields, such as PCR, POCR, splice_count, the length of the transport private data field data adaptation and the flag of the expansion of the field of adaptation. Here is an optional field may be PCR, which is used as a clock signal demodulator of a receiving device, OPCR, used for recording, storage and playback of the program in the receiving device, the countdown bonding, which is the number of consecutive macroblocks, each of which consists of four channel blocks, Cr-block and Cb is the block length of the transport private data, which is the length of the text data when the broadcast of the text, and the length of extension of the field of adaptation. Also shown is the 1-bit indicator discontinuities, 1-bit indicator random access, 1-bit indicator of the priority of the elementary stream, 1-byte length field adaptation and marked by the flags field of the header adaptation.

5 to 9 are views illustrating various formats of the transport stream MPEG-2, which must be inserted auxiliary reference sequence (SRS)to implement the transmitting device according to the aspect of the present invention. Here, for convenience, the German, three bytes after the synchronization byte of the transport stream are collectively referred to as the normal header, and two bytes of the field of adaptation are collectively called header field adaptation (AF). However, there can be used other names and/or number of bytes.

In General, SRS is a special known sequence in a determined VSB frame, which is inserted so that the corrector receiving device could use this well-known sequence in order to reduce the dynamic multipath and other negative characteristics of the channel. Corrector receiving device uses these three related sequences in order to adapt itself to dynamic channel change. When the state of the encoder is forcibly brought to a known deterministic state (DTR)attached precomputed known bit sequence (SRS template) then immediately pre-processed in a certain way in these temporary positions at the input of the interleaver in the frame. The resulting symbols at the output of the interleaver, due to the way that operates interleaver supports ATSC, will appear as known patterns of adjacent characters in known positions VSB frame, which is available for the receiving device to the AC is additional training sequence corrector. Data that should be used in the packets of the transport streams (TS) to create this well-known sequence of characters entered into the system backward compatible way using existing standard mechanisms. These data are transferred to the field of adaptation MPEG2. Therefore, the existing standards will be improved, and ensure compatibility.

RS-encoder before interleaver calculates the RS parity. Due to the drop TCM-coders calculated bytes RS parity are wrong and must be corrected. Thus, included an additional processing step to correct parity errors in the selected packages. For all packets with parity errors their RS-parity to be recoded. (52)-Segment byte interleaver with unique properties temporal dispersion, which forms adjacent SRS template, improved, in order to have adequate time for recoding byte parity. The time required to perform this limits the maximum SRS-bytes.

Figure 5 illustrates the data structure of the packet MPEG-2 basic forms in the VSB system, using SRS. These data package MPEG-2 include part of a normal header, consisting of the byte clock signal and numbers a triple-byte PID (packet identifier), double-byte adaptation field header (AF), R is the seer in the information about the position of fill bytes and fill the bytes of the specified length N. The remaining bytes of the data packet conform to the normal flow, which is a typical payload. Since the initial position of fill bytes are fixed, the positions of the bytes is expressed through information about the length of fill bytes. Length N filler bytes can be in the range from 1 to 27.

6 to 9 illustrate a package structure having a field of adaptation, in which other information such as time stamp programs (PCR), the original time stamp programs (OPCR), the countdown bonding (splice_count), etc. included in order to effectively use the SRS. In these cases, the field of adaptation designed to have the same size. Part except AF-header information such as PCR, OPCR, splice_count etc. corresponds to the filling bytes, which must be inserted SRS. It should be understood that in addition to the structures of the packages shown in Fig.6-9, there are several ways that should make the package transport stream having the padding area, in which you are inserting the SRS, in the area other than the area for an optional field in the adaptation, according to aspects of the invention.

Figure 10 is a block diagram illustrating the structure of a digital broadcast transmitting device according to a variant implementation of the present invention. According to figure 1, the digital broadcast transmitting device includes a TS multiplexer (MUX) 310, TS-postmultiplication (MUX) 320, randomization 330, block 340 insert SRS, RS-encoder 350, interleaver 360 data, the trellis encoder 370, generator 380 parity with backward compatibility and the multiplexer 390. TS MUX 310 receives the video stream and the audio stream and forms the traditional package of MPEG transport stream. TS-post-MUX 320 generates a fill area to insert SRS data packet of the transport stream output from the TS MUX 310, and outputs the transport stream MPEG. Examples of the flow shown in Fig.6-9 (without limitation shown) through an appropriate move items, such as PCR, OPCR, the countdown bonding, the length of the transport private data length of extension of the field of adaptation and other similar data.

Randomization 330 endomysium input transport stream MPEG-2 to increase the utilization of the allocated channel space. Block 340 insert SRS generates SRS. SRS - a specific sequence (such as a training sequence), with a specific template, the pre-formed between the side of the transmitting device and the side of the receiver. Block 340 insert SRS replaces fill the bytes in positions of fill bytes randomized data on SRS. Because SRS is different from the payload data pattern which is transmitted/received, the SRS can be easily found and used the Ana for synchronization and compensation on the side of the receiver.

RS-encoder 350 adds a parity of specified bytes in the packet, when the fill bytes are transferred in batch by block 340 insert SRS, by performing RS-encoding the packet data to correct errors caused by the channel. Interleaver 360 punctuates the data package, which adds the parity output from the RS encoder 350, in the specified template. Trellis encoder 370 converts the data output from the interleaver 360, the data symbols, and performs character conversion (mapping) of data characters through the trellis encoding at a speed of 2/3.

According to the aspect of the invention trellis encoder 370 initializes the value temporarily stored in its storage device equal to a specific value. For example, the initialized value may be the state 00. Regardless of the values of the initialization is the starting point of the SRS. Trellis encoder 370 performs trellis encoding data. In addition, the trellis encoder 370 outputs the value to initialize the storage device in the generator 380 parity with backward compatibility, adopts new parity generated by generator 380 parity with backward compatibility, and replaces the corresponding current parity on the adopted new parity, so that lattice coding was carried out with a new cetos is d, adopted from the generator 380 parity with backward compatibility.

At the output of trellis encoder 370 and the next state of the storage device is influenced by the previous value of the memory device. I.e. if the previous input data is changed, the input data that should be used to initialize the changes. If the parity packet corresponding to the zone initialization, before the zone initialization, the input value that was previously used to initialize the storage device trellis encoder 370, changes due to new generated parity. In this case, the initialization could not be performed or exact parity cannot be formed using the corrected initialization values. Accordingly, to prevent the position of the parity packet initialization before initializing, according to the aspect of the invention, the maximum number of fill bytes is equal to 27 according to the aspect of the invention. However, it should be understood that other types of packets, divided into a different number of segments that can be assigned a different maximum number of fill bits.

According to the aspect of the invention, the generator 380 parity with backward compatibility generates a new parity by performing RS package MPEG-2, input of the RS-encoder 360 (i.e. re RS codes RS-coded packet MPEG-2), using the value of the initialization of the storage device, the input of the trellis encoder 370. Generator 380 parity with backward compatibility transmits the generated parity in the trellis encoder 370. However, it is clear that if backward compatibility is not used, the generator 380 is not necessary.

MUX 390 multiplexes packets received lattice coding, signal segment synchronization signal field synchronization by inserting signal segment synchronization and signal field synchronization packet received trellis encoding. A modulator (not illustrated) performs a VSB modulation of the package in which the inserted signal segment synchronization signal field synchronization, and performs the conversion with increasing frequency modulated packet in the signal band RF channel for signal transmission band RF channel.

11 is a block diagram illustrating the structure of a digital broadcast transmitting device according to another variant implementation of the present invention. In this embodiment, TS-post-MUX 420 directly receives the input audio and video data without passing through the TS MUX and performs the same operation as that of the formation according to figure 10. In this TS-post-MUX 420 is not added to the TS MUX for SRS VSB, and is regarded as a new TS MUX for SRS VSB.

The same version in figure 10, randomization 420 endomysium input transport stream MPEG-2 to increase the utilization of the allocated channel space. Block 440 insert SRS generates a sequence of SRS, which is a sequence with a specific template that is pre-agreed between the party transmitting device and the party receiving device, and replaces the fill bytes in position fill bytes randomized data on SRS. RS-encoder 450 adds a parity of specified bytes in the packet, for which fills the bytes are transferred in batch by block 340 insert SRS, by performing RS-encoding the packet data to correct errors caused by the channel. Interleaver 460 punctuates the data package, which adds the parity output from the RS encoder 350, in the specified template. Trellis encoder 470 converts the data output from the interleaver 360, the data symbols, and performs character conversion character data through the trellis encoding at a speed of 2/3.

As shown, the trellis encoder 470 initializes the value temporarily stored in its own memory device to a specific value (for example, state 00) at the starting point of the SRS, and performs re mcatee data coding. In addition, the trellis encoder 470 outputs the value to initialize the storage device in the generator 480 parity with backward compatibility, adopts new parity generated by generator 380 parity with backward compatibility, and replaces the corresponding current parity on adopted a new parity.

At the output of trellis encoder and the next state of the storage device is influenced by the previous value of the memory device. I.e. if the previous input data is changed, the input data that should be used to initialize the changes. If the parity packet corresponding to the zone initialization, before the zone initialization, the input value that was previously used to initialize the storage device trellis encoder 470, changes due to new generated parity. In this case, the initialization may fail or exact parity cannot be formed using the adjusted values of the initialization. Accordingly, to prevent the position of the parity packet initialization before initializing the maximum number of fill bytes is equal to 27.

Generator 480 with backward compatibility parity generates parity by performing an RS encoding of p is chum MPEG-2, input of the RS-encoder 460, using the value of the initialization of the storage device, the input of the trellis encoder 470, and transmits the generated parity in the trellis encoder 470. However, it is clear that the generator 480 is not required in all aspects of the invention.

MUX 490 multiplexes packets received lattice coding, signal segment synchronization signal field synchronization by inserting signal segment synchronization and signal field synchronization packet received trellis encoding. A modulator (not illustrated) performs a VSB modulation of the package in which the inserted signal segment synchronization signal field synchronization, and performs the conversion with increasing frequency modulated packet in the signal band RF channel for signal transmission band RF channel.

Fig is a view illustrating an exemplary input type MPEG-package, whereby SRS VSB can be effectively managed according to aspects of the invention. 312 MPEG packets contained in one VSB field. Packages, which include information such as PCR, OPCR, the countdown bonding, the length of the transport private data length extension field adaptation of the 312 packets can be entered in these positions, as shown in the drawing. The position of the optional fields, for example, when 312 segments dividing the Xia blocks 52 of the segment, can be expressed as follows:

Timestamp programs (PCR) was used (6 bytes): 52n+15, n=0;

The original time stamp programs (OPCR) (uses 6 bytes): 52n+15, n=1;

The length of extension of the field of adaptation (using 2 bytes): 52n+15, n=2;

The length of the transport private data (used 5 bytes): 52n+15, n=3, 4, 5; and

The countdown bonding (used 1 byte): 52n+19, n=0, 1, 2, 3, 4, 5.

The form of MPEG-package, shown in figure 5, and the position of the MPEG packet, shown in Fig, can be modified in various forms in order to effectively use SRS VSB.

Fig is an exemplary view illustrating the structure peremienko package according to a variant implementation of the present invention. As MPEG information, such as PCR, should be taken as is for compatibility, it cannot be used to initialize or SRS template. Accordingly, by passing the MPEG information using part of the transport stream, which does not initialize the trellis encoder 370, loss can be reduced.

As shown in Fig when PCR or OPCR is used in a position 52n+15, 5 byte 6 byte PCR or OPCR used in the empty parts where the well-known symbol is not used, and this causes loss of known characters for only one byte (i.e. 4 characters) without any loss training. is also in the case of information transmission is less than 5 bytes causes no loss of known characters. On Fig splice_count is transmitted in position 52n+19. Due to the transfer splice_count through an empty part where the empty symbol is not used, as shown in Fig, splice_count can be transmitted without any loss of known characters. In the case of MPEG packet having the structure described above, the receiving device uses the SRS area, except for areas OPCR and PCR, as a training sequence, and in particular, the known values for the offset (such as a corrector 230) and/or decoder with direct correction of errors (such as the decoder 240).

The following describes a variant of the method is compatible control SRS VSB, when TS-post-MUX no. When the MPEG packet is entered into randomization 330 data, randomization 330 determines whether the field of adaptation, using the control flag field adaptation in figure 3. As shown, the control flag field adaptation in figure 3 has a flag for Reserved (00) (Reserved)flag for No Adaptation Field, Payload Only (01) (No field adaptation, only the payload), the flag for Adaptation Field Only, No Payload (10) (only the field of adaptation, there is no useful data) and the flag of the Adaptation Field Followed By Payload (11) (field adaptation precedes useful data). If the field of adaptation is present, randomization data 330 determines whether there is an OPCR, splice_count, transport_private_data and adaptation_field_extension, using the flag, shown in figure 4. If there is even od the n flag he skips the respective package without complete replacement of fill bytes.

In this case, the trellis encoder 370 and generator 380 parity with backward compatibility in figure 10 handle package existing way VSB-processing without performing RS-encoding and initialization of the storage device according to the training sequence. In this process the packet carrying the information does not change and, thus, can be transmitted without any distortion.

The transmitting device may transmit, using the reserved portion, information about the change in the training area through the transfer of this information to the receiving device. In addition, the receiving device uses the information about the training area as known values for offset and forward error correction through the use of information as a training sequence.

Fig is a block diagram of a sequence of operations illustrating a method of processing signals for digital broadcast transmitting device according to a variant implementation of the present invention. According figa and 9, TS MUX 310 receives the video stream and the audio stream and is the packet traffic flows. TS-post-MUX 320 is a package of transport streams, which includes filling the area to insert the known and SRS data (S910). Randomization 330 endomysium package, which includes a filling region (S920). Block 340 insert SRS SRS inserts a signal into the fill area of a randomized package (S930).

RS-encoder 350 adds the parity in the package in which is inserted the SRS signal, to correct the error caused by channel (S940). Interleaver 360 punctuates the package, which adds parity (S950). Trellis encoder 370 initializes its own storage device in the starting position of the SRS signal, and performs trellis encoding (S960). Generator 380 parity with backward compatibility accepts the package, which adds parity through RS-encoder 350, at step S940, and the packet encoded by a trellis encoder 370, and generates parity compatibility on the basis of these packages (S970). Trellis encoder 370 receives the parity compatibility from the generator 380 parity with backward compatibility, replaces a portion corresponding to parity compatibility of cenesta added via RS-encoder 350, the generated parity compatibility, and uses this parity in order to perform trellis encoding step S960.

The multiplexer 390 inserts the signal segment synchronization signal field synchronization package (S980)received trellis encoding, and the modulator performs a VSB modulation and RF-converted the e package to pass VSB-modulated and RF-converted package (S990).

Although the flow is described as including audio and video, it is clear that the flow may include other data under aspects of the invention.

Although not required in all aspects, it is clear that aspects of the invention can be implemented as hardware, software, or combinations thereof. Although illustrated and described several embodiments of the present invention, specialists in the art it should be clear that in these cases the implementation can be made without deviation from the principles of the invention, the scope of which is defined by the claims and its equivalents.

Industrial applicability

Aspects of the present invention relate to a method of formatting package digital broadcast transport streams to a digital broadcast transmitting device and to a method of signal processing and, more particularly, to a method of formatting package digital broadcast transport streams to a digital broadcast transmitting device and to a method of processing signals in it, which allow to increase the efficiency of the reception in the receiving system and to maintain compatibility with the existing system due to the formation of the I field of adaptation in packet traffic flows and inserting known data (i.e. an auxiliary sequence, SRS) in the position of the field of adaptation.

1. The digital broadcast transmitting device, comprising: an interleaver to interleave the stream and postmultiplication stream transmission for adjusting the position data of the specified type by defining the flow area into which is inserted the data of the specified type with given template alternation in such a way that when the above-mentioned interleaving data of the specified type are arranged in a given position in the stream among the data included in the stream, and to provide flow to the interleaver.

2. The digital broadcast transmitting device according to claim 1, further comprising: a multiplexer of the stream to form a stream comprising auxiliary data, and to ensure the flow for postmultiplication of the stream.

3. The digital broadcast transmitting device according to claim 2, additionally containing an encoder reed-Solomon (RS encoder for performing encoding of reed-Solomon (RS-coding) for the above-mentioned flow and to ensure the RS-encoded stream for the interleaver.

4. The digital broadcast transmitting device according to claim 1, additionally containing an insertion of the known data to insert known data in the area defined by postmultiplication of the stream.

5. Qi is the global broadcast transmitting device according to claim 1, in which said data of a given type are one of the auxiliary sequence, time stamp programs, the original time stamp programs, the counter bonding, the length of the transport private data length and expansion of the field of adaptation.

6. A method of processing a stream of a digital broadcast transmitting device containing phases in which: form a stream comprising auxiliary data; correcting the position data of a given type among the data included in the stream; and perform interleaving stream that includes the data, the position of which is corrected, and the said step of adjusting includes the step on which corrects the position data of the specified type by defining the flow area into which is inserted the data of the specified type with given template alternation in such a way that when the above-mentioned interleaving data of the specified type are placed in the specified position.

7. The method according to claim 6, further containing a phase in which coding reed-Solomon for the stream that includes the data, the position of which is corrected before the alternation of the stream.

8. The method according to claim 6, further containing a phase in which insert known data in the specified area.

9. The method according to claim 6, in which upon the other data of the specified type are one of the auxiliary sequence, timestamp programs, the original time stamp programs, the counter bonding, the length of the transport private data length and expansion of the field of adaptation.

10. Digital broadcasting system, comprising: a digital broadcast transmitting device for correcting the position data of the specified type by defining the flow area into which is inserted the data of the specified type, taking into account the pattern of alternation in such a way that when the above-mentioned interleaving data of the specified type are arranged in a given position in the stream among the data included in the stream; to interleave the stream and to transmit peremienko stream; and a digital broadcast receiving device for detecting data located in said given position, and for flow in the receiving stream from a digital broadcast transmitting device.

11. The digital broadcast system of claim 10, in which said data of a given type are one of the auxiliary sequence, time stamp programs, the original time stamp programs, the counter bonding, the length of the transport private data length and expansion of the field of adaptation.

12. The digital broadcast receiving device, comprising:
a demodulator for receiving the stream and for demodulation of the received stream;
corrector for correcting the demodulated stream, and a decoder for processing the corrected flow, and the flow includes the data of the specified type that are digital broadcast transmitting device in a given position in the stream, and at least one demodulator, corrector and decoder detects the data of the specified type in the specified position, and uses the detected data.

13. The digital broadcast receiving device according to item 12, in which the data of the specified type are one of the auxiliary sequence, time stamp programs, the original time stamp programs, the counter bonding, the length of the transport private data length and expansion of the field of adaptation.

14. A method of processing a stream of a digital broadcast receiver, comprising stages, in which: accept thread and demodulator the received stream; correcting the demodulated stream; and decode the corrected flow, and the flow includes the data of the specified type that are digital broadcast transmitting device in a given position in the stream, and at least one of the stages of demodulation, correction and decoding includes a step at which detects data of the specified type in the specified POS is tion and use the detected data.

15. The method according to 14, in which the data of the specified type are one of the auxiliary sequence, time stamp programs, the original time stamp programs, the counter bonding, the length of the transport private data length and expansion of the field of adaptation.

16. The digital broadcast receiving device, comprising: a demodulator for receiving the stream and for demodulation of the received stream, and a corrector for correcting the demodulated stream, and mentioned the stream taken from the digital broadcast transmitting device that includes postmultiplication stream transmission for adjusting the position data of the specified type that are included in the stream, and interleaver to interleave the stream, including data, the position of which is correct.

17. The digital broadcast receiving device according to clause 16, in which the data of the specified type are one of the auxiliary sequence, time stamp programs, the original time stamp programs, the counter bonding, the length of the transport private data length and expansion of the field of adaptation.

18. A method of processing a stream of a digital broadcast receiver, comprising stages, in which: accept thread, and demodulateur stream; and adjusting demodulates the config thread moreover, the above-mentioned flow is taken from the digital broadcast transmitting device that includes postmultiplication stream transmission for adjusting the position data of the specified type that are included in the stream, and interleaver to interleave the stream, including data, the position of which is correct.

19. The method according to p in which the data of the specified type are one of the auxiliary sequence, time stamp programs, the original time stamp programs, the counter bonding, the length of the transport private data length and expansion of the field of adaptation.

20. The digital broadcast receiving device, comprising: a demodulator for receiving the stream and for demodulation of the received stream, and a corrector for correcting the demodulated stream, and mentioned the stream taken from the digital broadcast transmitting device, configured to adjust the position data of the specified type that are included in the mentioned thread, and the insertion point of the known data; inserting known data in said adjusted position and interleave known data using postmultiplication flow of the transmission and the interleaver.

21. The digital broadcast receiving device according to claim 20, in which data of a given type represents the t of one of the auxiliary sequence, timestamp programs, the original time stamp programs, the counter bonding, the length of the transport private data length and expansion of the field of adaptation.

22. A method of processing a stream of a digital broadcast receiver, comprising stages, in which: accept thread, and demodulateur stream; and correcting the demodulated stream, and mentioned the stream taken from the digital broadcast transmitting device, configured to adjust the position data of the specified type that are included in the mentioned thread, and the insertion point of the known data; inserting known data in said adjusted position and interleave known data using postmultiplication flow of the transmission and the interleaver.

23. The method according to item 22, in which the data of the specified type are one of the auxiliary sequence, time stamp programs, the original time stamp programs, the counter bonding, the length of the transport private data length and expansion of the field of adaptation.



 

Same patents:

FIELD: radio communications.

SUBSTANCE: receiver of compressed audio and image signal has circuits for measurement of relative mistiming of decompressed signals of audio and image data. If mistiming of audio and image signals is within limits of first range of values, synchronization circuits will try to synchronize signals in time appropriately. If actual mistiming exceeds limits of first range, attempts to synchronize signals are halted and non-synchronized signals of audio and image are sent to output.

EFFECT: higher precision.

2 cl, 5 dwg

The invention relates to the field of digital signal processing

FIELD: physics; communication.

SUBSTANCE: code cycle phasing device relates to systems for transmitting discrete information and can be used for cycle phasing in noise-immune information security systems which use correcting codes, particularly factorable codes. The code cycle phasing device includes a decoder for confirmed words, a number multiplexer, a distributor and a counter unit. Signals on the end of each information unit are generated at the output of a threshold unit.

EFFECT: more reliable information reception in channels with high noise levels.

1 dwg

FIELD: physics, communication.

SUBSTANCE: invention is related to electric communication and is applicable for synchronisation of message sent by sequence of words of block turbo-code, in which component codes are binary cyclic codes of primitive lengths with generator polynomials having common divisor and expanded due to addition of verification for parity, under conditions of parametric uncertainty expressed in absence of any data on coder structure, excluding length of code word. Substance of code cyclic synchronisation method consists in the fact that discrete sequence of code word symbols is accepted with application of discrete information receiver. From received discrete sequence fragment is separated with length that is less than length of code word by one symbol, discrete Fourier Galois transform (DFGT) is carried out for this fragment, and synchronous condition of discrete information receiver is defined by availability of synchronous condition criterion. Criterion of synchronous condition of discrete information receiver is equality to zero of at least one spectral component in spectrum of separated fragment. In case of synchronisation absence prior to its establishment, synchronous condition is searched by means of serial shift by received sequence by one symbol into one and the same side with further separation of new fragment, its DFGT and determination of receiver synchronous condition availability by criterion of synchronous condition. After synchronous condition criterion has been detected, additionally synchronous condition establishment verity is confirmed by availability of phasing verity criterion. For this purpose at least four fragments of the same length are separated, which are serially installed downstream fragment selected at the stage of synchronous condition definition, at that beginning of another fragment is separated from the end of preceding fragment by one symbol of sequence, DFGT of additionally separated fragments is carried out, and phasing verity criterion availability is defined. Criterion for verity of phasing is nonempty crossing of multiple numbers of zero components in received spectra. In case phasing verity criterion is not available, searching of synchronous condition is restored from the moment of synchronous condition criterion detection.

EFFECT: increased number of synchronized codes under conditions of parametric uncertainty.

1 tbl, 1 dwg

FIELD: physics, communication.

SUBSTANCE: invention is related to telecommunications and may be used in receiving devices of synchronisation by cycles of discrete messages transmission system. Device comprises identifier of sync pulse, adder, unit of shift registers, resolver, shaper of sync pulses, counter of cycles, comparator, finder of synchronism loss threshold, unit of undistorted sync pulses permissible number selection, counter of distorted sync pulses, counter of total number of sync pulses, trigger, counter of clock pulses, element AND, unit of threshold selection, signal input, clock input and device output. Identifier of sync signal comprises shift register, detector of errors in sync group, shaper of response weight for sync signal. Resolver comprises the first comparator, memory unit, subtraction unit, the second comparator, counter of comparison, the second element AND, the third element AND, element OR. At that exit from synchronism condition is determined, when number of accumulated responses at position of true sync signal in another test cycle will be less than threshold of synchronism loss. At that in case of true distortion of synchronism in cells that correspond to position of true sync signal, there is drastic reduction of sync signal identifier responses accumulation density observed, which makes it possible to faster determine condition of system exit from synchronism, which in its turn makes it possible to reduce time required for synchronism restoration.

EFFECT: improved quick-action of device for cyclic synchronisation at high probability of erroneous reception of sync pulses.

1 dwg

FIELD: physics, communication.

SUBSTANCE: method of code cyclic sync concerns field of telecommunication and can be used for cyclic sync of conferrings in systems of transmission of the discrete information in which are used correcting, in particular cascade codes. The essence of the invention consists that the accepted input sequence representing the total on the module two checkout parts of an unjammable code, numbering and synchronising sequences, multiply by a checkout multinominal of a code. As a result calculate the total of a syndrome of an unjammable code and numbering and synchronising sequences. Then on the total of a syndrome of an unjammable code and synchronising sequence spot a vector of errors and correct errors in numbering sequence. After that compare numbering and synchronising sequences with earlier accepted and gain certain number of coincidence of numbering and synchronising sequences with corresponding numbering and synchronising sequences before the accepted code words. Thus, if this number of coincidence exceeds some in advance given threshold value, make the solution on presence of cyclic sync. And input sequence break into groups on f figures (f>1) in each group and calculate the total of a syndrome of the unjammable code, numbering and synchronising sequences, and also spot a vector of errors and correct errors in numbering sequence in a series-parallel code by means of in advance calculated functional connections set in a tabular view.

EFFECT: speed increase.

2 cl

FIELD: physics, communication.

SUBSTANCE: invention concerns communication technics, namely to expedients of cyclic sync of blocks of the information at synchronous expedients of transmission in a gamut of the fixed velocities of operation and self-acting operation of the receiver of telecode equipment without prestress installation of value of velocity of operation in a communication channel. At use of the receiver of the telecode information without prestress installation of velocity carry out parallel processing of signals of the code information sequences arriving from a communication channel with any velocity from a working range of the fixed velocities, N of devices of phase correction and recording (DPCR); after processing signals from everyone DPCR submit on inlets N of corresponding devices of cyclic sync (DCS) which parallelly carry out the analysis of input sequence with the subsequent record of signals of code information sequences in N operative storage devices (RAM). Thus on a signal of the cyclic sync, generated DCS, corresponding to velocity of signalling in a communication channel, information code sequence of signals at reading from corresponding to it DCS the RAM and a signal "an information Sign" from the corresponding block of guidance are switched by a mode "Record-reading" to an inlet of the decoder of the receiver of telecode equipment.

EFFECT: maintenance self-acting cyclic sync of blocks of the information for any velocity of signalling from the range of the fixed velocities of operation and self-acting operation of the receiver of telecode equipment without prestress installation of value of velocity of operation in a communication channel.

FIELD: electric communications, possible use for synchronization of message, which is transmitted as a series of words of cyclic code of primitive length under conditions of parametric indeterminacy, demonstrated by absence of any data about coder structure with the exception of code base and code word length.

SUBSTANCE: cyclic code synchronization method includes receiving discrete series of code word symbols using a receiver of discrete information, a fragment of discrete series is extracted which has length equal to length of code word, discrete Fourier-Galois transform is performed over the fragment and presence of synchronous state of discrete information receiver is determined using synchronous state criterion. Synchronous state criterion for the discrete information receiver is the equality to zero of at least one spectral component in the spectrum of the extracted fragment. In case when synchronization is absent before it is established, synchronous state is found by means of successive shifting of received series for one symbol towards one and the same side with following extraction of a new fragment, its discrete Fourier-Galois transform and detection of receiver synchronous state presence based on the synchronous state criterion. After detection of synchronous state criterion, validity check of synchronous state establishment is additionally performed according to presence of phasing validity indication. For that purpose, at least four fragments of the same length are extracted, which are positioned serially after the fragment, extracted at the stage of synchronous state detection, discrete Fourier-Galois transform is performed over additionally selected fragments and presence of phasing validity indication is determined. As phasing validity indication, non-empty intersection of sets of zero component numbers in resulting spectrums is considered. In case when phasing validity indication is absent, the search for synchronous state is continued starting at the moment when synchronous state criterion is fulfilled.

EFFECT: increased number of codes being synchronized under conditions of parametric indeterminacy, apparent from absence of any data about coder structure with the exception of code base and code word length.

1 dwg, 1 tbl

FIELD: electric communication and computing equipment, namely, area of methods for analyzing traffic in data transfer networks or network scanners.

SUBSTANCE: method for automatic detection of periodicity in digital signal includes cutting digital stream of binary symbols onto blocks with length t, aforementioned array of symbols is represented in form of two-dimensional binary image of aforementioned digital stream, Hough transformation is performed for aforementioned array of symbols, with visualization of straight line on aforementioned image, composed only of 0 or only of 1, inclination angle θ of the straight line is computed, with usage of table matching between θ and T, value of T series period is determined.

EFFECT: invention solves the problem of development of method for automatic detection of periodicity in digital group signal without output of digital flow under examination to display and without participation of operator personnel, resulting in reduced processing time.

2 cl, 11 dwg

FIELD: digital data transfer systems; frame synchronization in noise-immune data protection systems using correcting codes, including concatenated ones.

SUBSTANCE: proposed device has delay register, error detection unit, decoder unit, modulo two adder unit, counter, random-access memory, threshold unit, full adder, OR gate, switching unit, digit sequence count circuit, digit comparison circuit, full digit adder, and register unit. Inputs of delay register and error detection unit are integrated and connected to data input of device; error detection unit is made in the form of two series-connected Huffman filters and syndrome register, each Huffman filter having series-connected register and modulo two adder; output of second Huffman filter is connected to input of syndrome register whose output is connected to input of decoder unit; output of the latter is connected to modulo two adder unit whose other input is connected to output of second Huffman filter register. Inputs of digit comparison unit are connected to counter high-order digits; output of digit comparison unit is connected to high-order digits of RAM address input; low-order digits of the latter are connected to those of counter; clock input of the latter is connected to synchronization input of device.

EFFECT: enhanced noise immunity, ability of operating in channels where noise level is high.

1 cl, 1 dwg

FIELD: digital communications, namely engineering of devices for synchronizing digital information transfer systems with time compression of digital streams.

SUBSTANCE: synchronization device contains first and second random-access memory units, operation mode calibration block, frame synchronization combination decoder, information signals commutation block, first phasing block and generator equipment. Second phasing block, block for finding super-frame synchronization combination and block for finding super-frame synchronization are introduced into the device.

EFFECT: decreased time spent on searching for synchronism of digital transmissions with various types of modulation having super-frame structure.

3 dwg

FIELD: electric and radio communications; frame synchronization receiving devices of digital message transmitting and intercepting systems.

SUBSTANCE: proposed method includes sequential search at single-bit shift, identification of concentrated sync groups in group digital stream, and formation of responses when identifying concentration sync groups on tested clock intervals, and measurement of time intervals between sequential moments of responses across concentrated sync group identifier in terms of clock intervals. Primary sample of N ≥ 3 time intervals is accumulated. Secondary samples of time intervals between moments of first, second, through (N + 1)th reference responses, respectively, and arrival moments of all other primary-sample responses are calculated. Maximal common dividers of probable combinations of two or more time intervals are calculated and particular lines (spectrums) of distribution of maximal common dividers whose values exceed lower boundary of region of probable group signal cycle lengths are formed in the framework of secondary time interval samples. Integrated spectrum of maximal common divider values is formed by summing up all particular maximal common divider spectrums. Regular sequence of true integrated sync group responses is detected by fact of coincidence of maximal common dividers in integrated spectrum whose quantity exceeds desired threshold, and coincidence point abscissa of maximal common dividers is assumed as cycle length. True concentrated sync group responses are identified in primary implementation of stream by serial numbers of particular maximal common divider spectrums wherein we see multiple coincidences of maximal common dividers with found cycle length. Clock interval of group-signal next cycles commencement is predicted. Concentrated sync group responses appearing at predicted clock intervals are assumed as frame synchronization pulses. Decision on input in and output from frame synchronization mode is taken by composite "k/m-r" criterion.

EFFECT: enlarged functional capabilities due to affording frame synchronization in absence of a priori data on group-signal cycle length without impairing noise immunity.

1 cl, 9 dwg

FIELD: information technology.

SUBSTANCE: presentation associatively related to a basic service and an additional presentation associatively related to an additional service are received. Also the devices and methods include provision for a channel set up in the device, where the set up channel is based on the combination of at least part of the basic service with at least part of the additional service.

EFFECT: possibility of content distributors customising content presented to their subscribers when on service is offered by several content distributors.

51 cl, 21 dwg

FIELD: physics, communications.

SUBSTANCE: invention relates to multimedia transmission systems, specifically to methods and a device for acquiring services. Proposed is a service acquisition device which has a source coder configured to generate one or more channel switch video (CSV) signals, which is an independently decoded version of a low-resolution video for the selected channel in a received multiplex transmission and associated one or more multimedia signals, an error coder configured to code CSV signals and multimedia signals for formation of coded error blocks, and a linker configured to encapsulate coded error blocks into a multiplex transmission signal.

EFFECT: fast acquisition of a service and/or switching between services in multiplex transmission.

60 cl, 23 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to content distribution systems and specifically to a device and methods of subscribing for opening and closure of packets. The technical result is achieved due to that program package information containing attributes of the channel package for presenting multimedia information is provides. Further, the subscription characteristic which determines possibility of subscription for a package and presentation of the program package information on the device is determined. The device can compare the subscription characteristic with information on subscription relating to the device. Subscription is permitted and/or program package information is presented on the device based on predefined dependency between the subscription characteristic and subscription information of the device.

EFFECT: improved efficiency of managing changes in multimedia scheduling packages.

28 cl, 9 dwg

FIELD: physics, communications.

SUBSTANCE: invention relates to communication networks, and particularly to message templates in electronic service guides used in communication networks. A device and method of transmitting and receiving electronic service guide (ESG) fragments relating to an event or program are disclosed. An event or program can include an interactive service component through which a subscriber can interact with the program in real time. Information content of a program such as audio and video data relating to the program can be transmitted to a subscriber in an ESG fragment. An ESG fragment can have associated metadata which can contain modified information relating to an interactive service component of an event or program. A terminal device or subscriber receiver can analyse data in the ESG fragment in order to determine attributes required for displaying the message template related to the interactive service component of the event or program. A subscriber can interact with a program through the said message template.

EFFECT: design of a system for offering subscribers interactive services, distinguished by efficiency and flexibility which can be eliminate errors or minimise their frequency when a subscriber enters their response.

38 cl, 9 dwg, 1 tbl

FIELD: physics; communication.

SUBSTANCE: 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.

EFFECT: identification of ESG fragments with small amount of service information.

28 cl, 10 dwg, 1 tbl

FIELD: physics; communication.

SUBSTANCE: invention relates to digital video broadcasting systems using an electronic service guide (ESG). A device is proposed for handling errors in ESG transmission in a digital video broadcasting system, which includes a service application (SA) component for receiving a request message for file restoration from a communication terminal after transmitting ESG from a service management (SM) component to a terminal and, if the request message for file restoration is an ESG request, providing the SM component with a request message for file restoration and a terminal address; a logic device for compiling ESG for generating ESG within a SM component which interprets the request message and determines whether to resend the ESG to the terminal, and if a decision is made to resend the ESG, the logic device for compiling the ESG sends ESG metadata and terminal address to an interactive server for transmitting ESG within the SM component, and the interactive server sends ESG metadata to the terminal.

EFFECT: design of a video broadcasting system capable of sending a restoration request to a network and receiving a repeatedly transmitted ESG when an error occurs during transmission of the ESG.

33 cl, 14 dwg

FIELD: physics; radio.

SUBSTANCE: invention relates to radio communication engineering and can be used for stereophonic and monophonic broadcasting. The radio broadcasting system has the following on the transmitting side: four signal processing channels, an encoding unit, a composite signal generator, a sinusoidal oscillator, a frequency divider, a transmitter as part of series-connected carrier frequency generator, amplitude modulator, and an output amplifier; on the receiving side: a digital receiver which includes a bipolar amplitude detector, first and second pulse formers, four digital-to-analogue converters, two channels, each of which includes series-connected speech filter, power amplifier and loud-speaker, a control unit, radio signal reception unit, clock pulse selection unit and two receiving registers.

EFFECT: reduced energy consumption by the system transmitter and increased number of receiving radio stations at the receiving side.

10 dwg

FIELD: physics; video technology.

SUBSTANCE: invention relates to television information media and particularly to configuration of TV-signals and TV-tuners. Proposed is a system/method for automated tuning a TV-signal/tuner in a tuner device (for example a personal computer, personal video recorder, a TV set-top box), which has one or more tuners. Setup identifies the number of tuners in the device, where the tuners are analogue or digital, and the standard supported by each tuner. The geographical are in which the device will receive TV-signals is identified, and tuners supporting that area are identified. Digital tuners are identified as digital in the report when analogue tuners are being interrogated so as to detect acting TV-signals and determine source of any acting TV-signals (for example, an antenna, cable service supplier, TV set-top box).

EFFECT: provision for tuning TV-signals and tuners in media where a large number of different tuner configurations are present in personal computers, for instance which is improved for home entertainment.

29 cl, 6 dwg

FIELD: physics; communications.

SUBSTANCE: invention relates to a system for managing scene structure of a mobile terminal for receiving and displaying data streams in a mobile broadcast system based on lightweight application scene representation (LASeR). A system is proposed for managing scene structure of a mobile terminal for receiving and displaying data streams when logical channels are multiplexed into one physical channel. Multiplexed channels are successively decoded and compiled into media information. A scene with channel circulation alternately displays channels in one media information in an assigned order. In a combination scene structure, a new unit is added to the traditional LASeR technology so as to compile a scene. Fields are provided for temporary information and scene transition effect. A terminal compiles multi-channel media information using stream source unit information coming from a service provider, without an additional mosaic channel.

EFFECT: design of an improved system and method of accurate realisation of a video channel, allocated for a mosaic service when limited channel resources are taken into account.

30 cl, 10 dwg, 5 tbl

Up!