CA2401394A1 - Vsb transmission system for processing supplemental transmission data - Google Patents

Vsb transmission system for processing supplemental transmission data Download PDF

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Publication number
CA2401394A1
CA2401394A1 CA002401394A CA2401394A CA2401394A1 CA 2401394 A1 CA2401394 A1 CA 2401394A1 CA 002401394 A CA002401394 A CA 002401394A CA 2401394 A CA2401394 A CA 2401394A CA 2401394 A1 CA2401394 A1 CA 2401394A1
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Canada
Prior art keywords
supplemental data
vsb
bytes
supplemental
data
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Granted
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CA002401394A
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French (fr)
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CA2401394C (en
Inventor
In Hwan Choi
Young Mo Gu
Kyung Won Kang
Kook Yeon Kwak
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LG Electronics Inc
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Individual
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Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0057—Block codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes
    • H04L1/006—Trellis-coded modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes
    • H04L1/0065—Serial concatenated codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/23614—Multiplexing of additional data and video streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/2365—Multiplexing of several video streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4347—Demultiplexing of several video streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4348—Demultiplexing of additional data and video streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/24—Systems for the transmission of television signals using pulse code modulation
    • H04N7/52—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal

Abstract

A VSB communication system or transmitter for processing supplemental data packets with MPEG-II data packets includes a VSB supplemental data processor and a VSB transmission system. The VSB supplemental data processor includes a Reed-Solomon coder for coding the supplemental data to be transmitted, a null sequence inserter for inserting a null sequence to an interleaved supplemental data for generating a predefined sequence, a header inserter for inserting an MPEG header to the supplemental data having the null sequence inserted therein, a multiplexer for multiplexing an MPEG data coded with the supplemental data having the MPEG header added thereto in a preset multiplexing ratio and units. The output of the multiplexer is provided to an 8T-VSB transmission system for modulating a data field from the multiplexer and transmitting the modulated data field to a VSB
reception system.

Claims (40)

1. A VSB transmitter for use with an MPEG data signal and a supplemental data signal, the VSB transmitter comprising:
a VSB supplemental data processor comprising:
a forward error correction coder that codes the supplemental data signal;
a null sequence inserter for inserting a null sequence to the supplemental data signal subjected to the forward error correction coder for generating a predefined sequence;
a header inserter for inserting a header to the supplemental data signal having the null sequence inserted therein; and a multiplexer for multiplexing the MPEG data signal and the supplemental data signal having the header inserted thereto in at least one of a predetermined multiplexing ratio and unit; and a VSB transmission system connected to the VSB supplemental data processor for modulating an output from the multiplexer to form at least one data field comprising a plurality of segments that includes at least one segment formed from the supplemental data signal and at least one segment formed from the MPEG data signal.
2. The VSB transmitter of claim 1, wherein the forward error correction coder is a Reed-Solomon coder.
3. The VSB transmitter of claim 2, wherein the supplemental data signal includes at least one data packet having X bytes and the Reed-Solomon coder provides parity bytes of Y bytes, wherein a total of X and Y bytes is 184 bytes.
4. The VSB transmitter of claim 3, wherein the header inserter adds three bytes of header information to the data packet, wherein the header information contains program identification.
5. The VSB transmitter of claim 3, wherein the null sequence inserter divides the one data packet of the supplemental data signal into a plurality of data packets.
6. The VSB transmitter of claim 5, wherein the predefined sequence has substantially the same occurrence of bits "1" and "0".
7. The VSB transmitter of claim 1, further comprising an interleaver receiving data from the forward error correction coder and outputting to the null sequence inserter, the interleaver interleaves the supplemental data signal coded by forward error correction code.
8. The VSB transmitter of claim 7, wherein the forward error correction coder is a Reed-Solomon coder.
9. The VSB transmitter of claim 8, wherein the supplemental data signal includes at least one data packet having X bytes and the Reed-Solomon coder provides parity bytes of Y bytes, wherein a total of X and Y bytes is 184 bytes.
10. The VSB transmitter of claim 9, wherein the header inserter adds three bytes of header information to the data packet, wherein the header information contains program identification.
11. The VSB transmitter of claim 9, wherein the null sequence inserter divides the one data packet of the supplemental data signal into a plurality of data packets.
12. The VSB transmitter of claim 11, wherein the predefined sequence has substantially the same occurrence of bits "1" and "0".
13. The VSB transmitter of claim 1, wherein the multiplexing unit is a segment, and the multiplexing ratio varies with amounts of MPEG data packets representing the MPEG data signal and supplemental data packets representing the supplemental data signal.
14. The VSB transmitter of claim 13, wherein the multiplexing ratio of the supplemental data packets and the MPEG data packets in the multiplexes is one segment to one segment.
15. The VSB transmitter of claim 13, wherein the multiplexing ratio of the supplemental data packets and the MPEG data packets in the multiplexes is one segment to three segments.
16. The VSB transmitter of claim 1, wherein the multiplexes is responsive to a field synchronizing signal used for synchronizing a data frame of the VSB
transmission system.
17. The V SB transmitter of claim 1, wherein the data field has 312 data segments and one field synchronizing segment.
18. A VSB supplemental data processor for use with a VSB transmission system to provide a supplemental data signal and an MPEG data signal thereto, wherein the VSB transmission system modulates at least one data field comprising a plurality of segments that includes at least one segment formed from the supplemental data signal and at least one segment formed from the MPEG data signal, the VSB
supplemental data processor comprising:
a forward error correction codes that codes the supplemental data signal;

a null sequence inserter for inserting a null sequence to the supplemental data signal subjected to the forward error correction coder for generating a predefined sequence;

a header inserter for inserting a header to the supplemental data signal having the null sequence inserted therein; and a multiplexer for multiplexing the MPEG data signal and the supplemental data signal having the header inserted thereto in at least one of a predetermined multiplexing ratio and unit.
19. The VSB supplemental data processor of claim 18, wherein the forward error correction coder is a Reed-Solomon coder.
20. The VSB supplemental data processor of claim 19, wherein the supplemental data signal includes at least one data packet having X bytes and the Reed-Solomon coder provides parity bytes of Y bytes, wherein a total of X and Y
bytes is 184 bytes.
21. The VSB supplemental data processor of claim 20, wherein the header inserter adds three bytes of header information to the data packet, wherein the header information contains program identification.
22. The VSB supplemental data processor of claim 20, wherein the null sequence inserter divides the one data packet of the supplemental data signal into a plurality of data packets.
23. The VSB supplemental data processor of claim 22, wherein the predefined sequence has substantially the same occurrence of bits "1" and "0".
24. The VSB supplemental data processor of claim 18, further comprising an interleaver receiving data from the forward error correction coder and outputting to the null sequence inserter, the interleaver interleaves the supplemental data signal with forward error corrected code.
25. The VSB supplemental data processor of claim 24, wherein the forward error correction coder is a Reed-Solomon coder.
26. The VSB supplemental data processor of claim 25, wherein the supplemental data signal includes at least one data packet having X bytes and the Reed-Solomon coder provides parity bytes of Y bytes, wherein a total of X and Y
bytes is 184 bytes.
27. The VSB supplemental data processor of claim 26, wherein the header inserter adds three bytes of header information to the data packet, wherein the header information contains program identification.
28. The VSB supplemental data processor of claim 26, wherein the null sequence inserter divides the one data packet of the supplemental data signal into a plurality of data packets.
29. The VSB supplemental data processor of claim 28, wherein the predefined sequence has substantially the same occurrence of bits "1" and "0".
30. The VSB supplemental data processor of claim 18, wherein the multiplexing unit is a segment, and the multiplexing ratio varies with amounts of MPEG
data packets representing the MPEG data signal and supplemental data packets representing the supplemental data signal.
31. The VSB supplemental data processor of claim 30, wherein the multiplexing ratio of the supplemental data packets and the MPEG data packets in the multiplexer is one segment to one segment.
32. The VSB supplemental data processor of claim 30, wherein the multiplexing ratio of the supplemental data packets and the MPEG data packets in the multiplexer is one segment to three segments.
33. A method for a supplemental data packet and an MPEG data packet in a VSB transmitter comprising a VSB supplemental data processor and a VSB
transmission system, the method comprising the steps of:
subjecting the supplemental data packet of preset bytes to a Reed-Solomon coding and adding a Reed-Solomon parity data of preset bytes to the supplemental data packet;
interleaving the coded supplemental data packet;
inserting null sequence data into the interleaved supplemental data packet for producing at least one supplemental data packet of a preset number of bytes;
adding an MPEG header of preset bytes to each one of the supplemental data packets;
multiplexing the MPEG data packet with the supplemental data packet at a preset multiplexing ratio; and modulating the data multiplexed at the preset multiplexing ratio through the VSB transmission system.
34. The method claim 33, wherein the Reed-Solomon parity is included to only one of the supplemental data packets.
35. The method of claim 33, wherein the inserting null sequence data includes the steps of;
dividing the supplemental data packet into two supplemental data packets having the same numbers of bytes; and inserting a null sequence having the same bytes with the supplemental data packet into each one of the supplemental data packets to provide two supplemental data packets each having the null sequence inserted therein.
36. The method of claim 35, wherein each one of the supplemental data packets has 184 bytes comprising 92 bytes of supplemental data 92 bytes of the null sequence.
37. The method of claim 33, wherein the MPEG header is an identification code for identifying whether the multiplexed data is the supplemental data packet or the MPEG data packet.
38. A VSB signal format comprising:
an MPEG header region; and a supplemental data region having original supplemental data and null sequence data.
39. The VSB signal format of claim 38, wherein the MPEG header region has 3 bytes, the original supplemental data has 92 bytes, and the null sequence data has 92 bytes.
40. The VSB signal format of claim 38, wherein the supplemental data region further includes a Reed-Solomon parity of preset bytes.
CA2401394A 2000-12-28 2001-12-27 Vsb transmission system for processing supplemental transmission data Expired - Fee Related CA2401394C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR2000/83533 2000-12-28
KR1020000083533A KR100673419B1 (en) 2000-12-28 2000-12-28 Transmitting system and data processing method
PCT/KR2001/002278 WO2002054764A1 (en) 2000-12-28 2001-12-27 Vsb transmission system for processing supplemental transmission data

Publications (2)

Publication Number Publication Date
CA2401394A1 true CA2401394A1 (en) 2002-07-11
CA2401394C CA2401394C (en) 2010-07-20

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US (8) US7010038B2 (en)
KR (1) KR100673419B1 (en)
CN (1) CN1202667C (en)
AR (2) AR043283A1 (en)
BR (1) BR0108943A (en)
CA (1) CA2401394C (en)
MX (1) MXPA02008320A (en)
WO (1) WO2002054764A1 (en)

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