JP5230582B2 - 受信性能が向上したデジタル放送送受信機及びその信号処理方法 - Google Patents
受信性能が向上したデジタル放送送受信機及びその信号処理方法 Download PDFInfo
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- 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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
- H03M13/253—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM] with concatenated codes
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/29—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
- H03M13/2933—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes using a block and a convolutional code
- H03M13/2936—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes using a block and a convolutional code comprising an outer Reed-Solomon code and an inner convolutional code
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03178—Arrangements involving sequence estimation techniques
- H04L25/03248—Arrangements for operating in conjunction with other apparatus
- H04L25/03286—Arrangements for operating in conjunction with other apparatus with channel-decoding circuitry
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- 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
- H04N21/23611—Insertion of stuffing data into a multiplex stream, e.g. to obtain a constant bitrate
-
- 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
- H04N21/4346—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 involving stuffing data, e.g. packets or bytes
-
- 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 encoded video stream packets from an IP network
- H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/02—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information
- H04H60/07—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information characterised by processes or methods for the generation
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- Computer Networks & Wireless Communication (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Error Detection And Correction (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Circuits Of Receivers In General (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Description
120 RS符号化部
130 インタリーブ部
140 トレリス符号化部
150 多重化部
160 変調及びRF部
210 復調部
220 等化部
230 トレリス復号化部
240 デインタリーブ部
250 RS復号化部
260 逆ランダム化部
610 ランダム化部
620 スタッフバイト交換部
630 RS符号化部
640 インタリーブ部
650 トレリス符号化部
660 RSパリティ生成部
670 多重化部
680 制御部
800 RSパリティ生成部
810 シンボル−バイト交換器
820 デインタリーバ
830 パケットバッファ
840 RS符号化器
850 インタリーバ
860 バイト−シンボル交換器
910 バイトマッパ
920 パケットバッファ
930 RS符号化器
940 シンボルマッパ
1200 MUX
1250 MUX
1510 復調部
1520 等化部
1530 ビタビ復号化部
1540 デインタリーブ部
1550 RS復号化部
1560 逆ランダム化部
1570 制御部
1610 ランダム化部
1620 スタッフバイト交換部
1630 RS符号化部
1640 インタリーブ部
1650 トレリス符号化部
1660 RSパリティ生成部
1670 制御部
1680 多重化部
Claims (10)
- デジタル放送送信機において、
複数のトレリス符号化器を含み、前記複数のトレリス符号化器のうち少なくとも一つの内部メモリを初期化し、前記初期化に利用されたデータを出力するトレリス符号化部と、
前記初期化に利用されたデータに基づいてパリティを生成するRSパリティ生成部と、
を含むことを特徴とするデジタル放送送信機。 - 前記トレリス符号化部は、
前記RSパリティ生成部の出力をトレリス符号化することを特徴とする請求項1に記載のデジタル放送送信機。 - 前記トレリス符号化部は、
第1メモリと、
前記第1メモリと接続され、制御信号に応じて既存入力信号及び前記第1メモリに格納された値のうち一つを出力する第1MUXと、
前記第1MUXの出力と前記第1メモリに格納された値とを加算して出力する第1加算器と、
第2メモリと、
前記第2メモリと接続され、前記第2メモリの値がシフトされる第3メモリと、
前記制御信号に応じて既存入力信号及び前記第3メモリに格納された値のうち一つを出力する第2MUXと、
前記第2MUXの出力と前記第3メモリに格納された値とを加算して前記第2メモリに提供する第2加算器と、
を含むことを特徴とする請求項2に記載のデジタル放送送信機。 - 前記初期化バイトが第1方向に配列された構造のストリームを入力され、前記初期化バイトが前記第1方向と垂直である第2方向に配列されるようにインタリーブするインタリーブ部を更に含み、
前記トレリス符号化部は前記インタリーブ部の出力をトレリス符号化することを特徴とする請求項3に記載のデジタル放送送信機。 - 前記第1方向は前記ストリーム構造上で縦方向であり、前記第2方向は前記ストリーム構造上で横方向であることを特徴とする請求項4に記載のデジタル放送送信機。
- 複数のトレリス符号化器のうち少なくとも一つの内部メモリを初期化し、前記初期化に利用されたデータを出力し、前記初期化に利用されたデータに基づいてパリティを生成するデジタル放送送信機と、
前記デジタル放送送信機から出力されるストリームを受信して処理するデジタル放送受信機と、
を含むデジタル放送システム。 - 前記デジタル放送送信機は、
前記初期化に利用されたデータに基づいてパリティを生成するRSパリティ生成部と、
前記RSパリティ生成部の出力をトレリス符号化するトレリス符号化部と
を含むことを特徴とする請求項6に記載のデジタル放送システム。 - 前記トレリス符号化部は、
第1メモリと、
前記第1メモリと接続され、制御信号に応じて既存入力信号及び前記第1メモリに格納された値のうち一つを出力する第1MUXと、
前記第1MUXの出力と前記第1メモリに格納された値とを加算して出力する第1加算器と、
第2メモリと、
前記第2メモリと接続され、前記第2メモリの値がシフトされる第3メモリと、前記制御信号に応じて既存入力信号及び前記第3メモリに格納された値のうち一つを出力する第2MUXと、
前記第2MUXの出力と前記第3メモリに格納された値とを加算して前記第2メモリに提供する第2加算器と、
を含むことを特徴とする請求項7に記載のデジタル放送システム。 - 前記初期化バイトが第1方向に配列された構造のストリームを入力され、前記初期化バイトが前記第1方向と垂直である第2方向に配列されるようにインタリーブするインタリーブ部を更に含み、
前記トレリス符号化部は前記インタリーブ部の出力をトレリス符号化することを特徴とする請求項8に記載のデジタル放送システム。 - 前記第1方向は前記ストリーム構造上で縦方向であり、前記第2方向は前記ストリーム構造上で横方向であることを特徴とする請求項9に記載のデジタル放送システム。
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US73943005P | 2005-11-25 | 2005-11-25 | |
US60/739,430 | 2005-11-25 | ||
US11/475,098 US7983354B2 (en) | 2005-11-25 | 2006-06-27 | Digital broadcast transmitter/receiver having an improved receiving performance and signal processing method thereof |
US11/475,098 | 2006-06-27 |
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JP2008542242A Division JP5084738B2 (ja) | 2005-11-25 | 2006-11-24 | 受信性能が向上したデジタル放送送受信機及びその信号処理方法 |
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JP2009263266A Expired - Fee Related JP4990957B2 (ja) | 2005-11-25 | 2009-11-18 | 受信性能が向上したデジタル放送送受信機及びその信号処理方法 |
JP2009263262A Expired - Fee Related JP4990956B2 (ja) | 2005-11-25 | 2009-11-18 | 受信性能が向上したデジタル放送送受信機及びその信号処理方法 |
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JP2009263263A Pending JP2010045850A (ja) | 2005-11-25 | 2009-11-18 | 受信性能が向上したデジタル放送送受信機及びその信号処理方法 |
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JP (6) | JP5084738B2 (ja) |
CN (6) | CN101686315B (ja) |
CA (6) | CA2686275C (ja) |
WO (1) | WO2007061244A1 (ja) |
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