JP5221498B2 - デジタル放送システム及びその方法 - Google Patents
デジタル放送システム及びその方法 Download PDFInfo
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- 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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- H03M13/151—Cyclic codes, i.e. cyclic shifts of codewords produce other codewords, e.g. codes defined by a generator polynomial, Bose-Chaudhuri-Hocquenghem [BCH] codes using error location or error correction polynomials
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- 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
- H03M13/2957—Turbo codes and decoding
- H03M13/296—Particular turbo code structure
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- 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
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- 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
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- 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
- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
- H03M13/13—Linear codes
- H03M13/15—Cyclic codes, i.e. cyclic shifts of codewords produce other codewords, e.g. codes defined by a generator polynomial, Bose-Chaudhuri-Hocquenghem [BCH] codes
- H03M13/151—Cyclic codes, i.e. cyclic shifts of codewords produce other codewords, e.g. codes defined by a generator polynomial, Bose-Chaudhuri-Hocquenghem [BCH] codes using error location or error correction polynomials
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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
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
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- 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
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
- H04L2001/0093—Point-to-multipoint
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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
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0226—Channel estimation using sounding signals sounding signals per se
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
- H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
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- Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Mathematical Physics (AREA)
- Artificial Intelligence (AREA)
- Algebra (AREA)
- General Physics & Mathematics (AREA)
- Pure & Applied Mathematics (AREA)
- Error Detection And Correction (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Time-Division Multiplex Systems (AREA)
Description
ここで、上記ターボ処理部は、上記インターリーブされたデュアル伝送ストリームから上記ターボストリームを検出するターボストリーム検出部と、上記検出されたターボストリームに対するパリティを上記ターボストリーム内に設けられたパリティ挿入領域に挿入するアウターエンコーダーと、上記パリティが挿入されたターボストリームをインターリーブするアウターインターリーバと、上記インターリーブされたターボストリームを上記デュアル伝送ストリームに挿入して上記デュアル伝送ストリームを再構成するターボストリームスタッファ、及び、上記再構成されたデュアル伝送ストリームのパリティを再生成して、上記デュアル伝送ストリームに付加するパリティ補償部と、を含むことが好ましい。
B)前略…000000000000010000000000BBBBB…後略
C)前略…101001010111011010101011CCCCC…後略
A)はターボ処理部250からのパケットを意味し、B)はRS再エンコーダされたパケットを意味し、C)は加算器430を利用してA)とB)を排他的論理和(Exclusive OR)した結果を意味する。A)で下線表示された部分がトレリスエンコーダーブロック410に入力された時に初期化が行われる。この場合、トレリスエンコーダーブロック410内に予め記憶された値に対応する値がRSリエンコーダー420に提供され、RSリエンコーダー420は、該提供された値にパリティを付加してB)パケットを出力する。B)パケットで下線表示された部分は、A)パケットの下線表示された部分に対応する変更値を意味する。B)パケットで下線表示された部分に対応するパリティは、BBBBBに再生成された状態であることが分かる。
12 RSエンコーダ
13 インターリーバ
14 トレリスエンコーダ
15 MUX
16 変調部
21 復調部
22 等化部
23 ビタビデコーダ
24 デインターリーバ
25 RSデコーダ
26 逆ランダム化部
100 伝送ストリーム生成装置
200 送信装置
300 受信装置
110 リード・ソロモン・エンコーダー
120 デュプリケイター
130 MUX
210 ランダム化部
220 付加基準信号挿入部
230 リード・ソロモン・エンコーダー
240 インターリーバ
250 ターボ処理部
251 ターボストリーム検出部
252 アウターエンコーダ
253 アウターインターリーバ
254 ターボストリームスタッファ
255 パリティ補償部
256 バイト−シンボル変換部
257 シンボル−バイト変換部
260 トレリス及び/またはパリティ訂正部
270 MUX
280 パイロット挿入部
285 事前等化部
290 VSB変調部
295 RF変調部
310 復調部
320 等化部
330 ビタビデコーダ
340 ターボデコーダ
341 トレリスデコーダ
342 アウターデインターリーバ
343 アウターマップデコーダ
344 アウターインターリーバ
345 フレームフォーマッター
346 シンボルデインターリーバ
350 ターボ挿入部
360 デインターリーバ
370 RSデコーダ
380 逆ランダム化部
390 ターボDE−MUX
391 TS DE−MUX
392 第1の同期信号挿入部
393 コンデンサ
394 RSデコーダ
395 第2の同期信号挿入部
396 同期信号検出部
410 トレリスエンコーダブロック
411 スプリッタ
412−1〜412−12 トレリスエンコーダー
413 エンコード出力部
420 RSリエンコーダ
430 加算器
440 MUX
450 MAPPER
Claims (5)
- 付加データストリームをエラーに強健に処理する処理部と、
前記処理部において処理された付加データストリームをノーマルデータストリームと多重化してデュアル伝送ストリームを出力するスタッファと、
前記デュアル伝送ストリームをトレリスエンコードし、所定の時点で前記トレリスエンコードに使用される少なくとも一つの内部メモリをリセットさせ、前記リセットによって変更されたパリティを訂正するトレリス/パリティ訂正部と、
を含み、
前記処理部は、
前記付加データストリームをエンコードしてシンボル単位のストリームを出力するアウターエンコーダーと、
前記アウターエンコーダーから出力されるエンコードされた付加データストリームをインターリーブするアウターインターリーバと、
を含むことを特徴とするデジタル放送送信機。 - 前記デュアル伝送ストリームに対する付加基準信号を設ける付加基準信号挿入部、を更に含み、
前記トレリス/パリティ訂正部は、前記付加基準信号がトレリスエンコードされる以前の初期化区間に前記内部メモリをリセットさせ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/パリティ訂正部は、
前記トレリスエンコードを行い、前記初期化区間に対応する外部制御信号が受信されると、前記リセットを実行しつつ予め保存された保存値を初期値に出力するトレリスエンコーダブロックと、
前記初期値に対応するパリティを生成するRSリエンコーダと、
前記RSリエンコーダで生成されたパリティを前記デュアル伝送ストリームに加算して前記リセットによって変更されたパリティを訂正する加算器と、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。 - 前記トレリス/パリティ訂正部は、
前記加算器によって訂正されたパリティを有するストリームを前記トレリスエンコーダブロックに提供するMUXと、
前記トレリスエンコーダブロックでトレリスエンコードされたストリームをシンプルマッピングするマップと、
を更に含む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。 - デジタル放送送信機におけるストリーム処理方法において、
付加データストリームをエラーに強健に処理する処理ステップと、
前記エラーに強健に処理された付加データストリームをノーマルデータストリームと多重化してデュアル伝送ストリームを出力するステップと、
前記デュアル伝送ストリームをトレリスエンコードし、所定の時点で前記トレリスエンコードに使用される少なくとも一つの内部メモリをリセットさせるステップと、
前記リセットによって変更されたパリティを訂正するトレリス/パリティ訂正ステップと、
を含み、
前記処理ステップは、
前記付加データストリームをエンコードしてシンボル単位のストリームを出力するアウターエンコードステップと、
前記アウターエンコードされた付加データストリームをインターリーブするアウターインターリーブステップと、
を含むことを特徴とするストリーム処理方法。
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Application Number | Priority Date | Filing Date | Title |
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US72877705P | 2005-10-21 | 2005-10-21 | |
US60/728,777 | 2005-10-21 | ||
US73429505P | 2005-11-08 | 2005-11-08 | |
US60/734,295 | 2005-11-08 | ||
US73805005P | 2005-11-21 | 2005-11-21 | |
US60/738,050 | 2005-11-21 | ||
US73944805P | 2005-11-25 | 2005-11-25 | |
US60/739,448 | 2005-11-25 | ||
US78870706P | 2006-04-04 | 2006-04-04 | |
US60/788,707 | 2006-04-04 | ||
KR10-2006-0068071 | 2006-07-20 | ||
KR1020060068071A KR100797176B1 (ko) | 2005-10-21 | 2006-07-20 | 디지털 방송 시스템 및 그 방법 |
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JP2010051022A JP2010051022A (ja) | 2010-03-04 |
JP5221498B2 true JP5221498B2 (ja) | 2013-06-26 |
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JP2008536518A Expired - Fee Related JP5221363B2 (ja) | 2005-10-21 | 2006-10-23 | デジタル放送システム及びその方法 |
JP2009272142A Expired - Fee Related JP5221497B2 (ja) | 2005-10-21 | 2009-11-30 | デジタル放送システム及びその方法 |
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JP (3) | JP5221363B2 (ja) |
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CN (4) | CN101697507B (ja) |
CA (3) | CA2625160C (ja) |
WO (1) | WO2007046675A1 (ja) |
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CA2686676A1 (en) | 2007-04-26 |
JP2010051021A (ja) | 2010-03-04 |
US20100150251A1 (en) | 2010-06-17 |
CN101697508A (zh) | 2010-04-21 |
US20100153825A1 (en) | 2010-06-17 |
CN101288300B (zh) | 2010-11-17 |
US8385369B2 (en) | 2013-02-26 |
CN101697506B (zh) | 2013-07-24 |
JP5221497B2 (ja) | 2013-06-26 |
CA2625160C (en) | 2013-12-24 |
WO2007046675A1 (en) | 2007-04-26 |
CN101697508B (zh) | 2013-09-25 |
US8457161B2 (en) | 2013-06-04 |
CN101288300A (zh) | 2008-10-15 |
KR20070043589A (ko) | 2007-04-25 |
CA2686274A1 (en) | 2007-04-26 |
CN101697507B (zh) | 2013-09-25 |
JP2009524945A (ja) | 2009-07-02 |
CN101697506A (zh) | 2010-04-21 |
JP5221363B2 (ja) | 2013-06-26 |
CA2686676C (en) | 2013-01-08 |
CN101697507A (zh) | 2010-04-21 |
CA2625160A1 (en) | 2007-04-26 |
US8514892B2 (en) | 2013-08-20 |
CA2686274C (en) | 2014-03-18 |
JP2010051022A (ja) | 2010-03-04 |
KR100797176B1 (ko) | 2008-01-23 |
US20070092027A1 (en) | 2007-04-26 |
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