JP2007166586A - チャンネル変更時間を短縮させたdmb受信装置 - Google Patents
チャンネル変更時間を短縮させたdmb受信装置 Download PDFInfo
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- JP2007166586A JP2007166586A JP2006235611A JP2006235611A JP2007166586A JP 2007166586 A JP2007166586 A JP 2007166586A JP 2006235611 A JP2006235611 A JP 2006235611A JP 2006235611 A JP2006235611 A JP 2006235611A JP 2007166586 A JP2007166586 A JP 2007166586A
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- 238000000034 method Methods 0.000 claims abstract description 20
- 238000012937 correction Methods 0.000 claims description 20
- 238000000638 solvent extraction Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 abstract description 32
- 230000005540 biological transmission Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
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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
- H04L1/0045—Arrangements at the receiver end
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
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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
- H04L1/0041—Arrangements at the transmitter end
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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
- 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
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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
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
- H04L2001/0093—Point-to-multipoint
-
- 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
-
- 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
- H04N21/4383—Accessing a communication channel
- H04N21/4384—Accessing a communication channel involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency
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- H—ELECTRICITY
- 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
- H04N5/50—Tuning indicators; Automatic tuning control
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Error Detection And Correction (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
【解決手段】 チャンネルに独立的なPNコード(Pseudo random Noise Code)の処理はビットデインターリービング(Bit Deinterleaving)実行前に実行し、順方向リンクでチャンネルを区分する識別字機能を担当するウォルシュコード(Walsh Code)の処理はビットデインターリービング(Bit Deinterleaving)を実行した後に行うように具現することにより、ビットデインターリービング(Bit Deinterleaving)の実行時のビットレート(Bit Rate)を低めてDMB放送チャンネル変更時間を短縮させる。
【選択図】 図2
Description
110、210 チューナー
120、220 CDM復調器
130、230 チャンネル復号器
140、240 映像復号器
231 ビットデインターリーバー
232 乗算器
233 積分器
234 ビタビ復号器
235 バイトデインターリーバー
236 リードソロモン復号器
Claims (5)
- チャンネルに独立的なPNコード(Pseudo random Noise Code)の処理はビットデインターリービング(Bit Deinterleaving)実行前に実行し、順方向リンクでチャンネルを区分する識別字機能を担当するウォルシュコード(Walsh Code)の処理はビットデインターリービング(Bit Deinterleaving)を実行した後に実行することを特徴とする、チャンネル変更時間を短縮させたDMB受信装置。
- アンテナを通じて受信したDMB(Digital Multimedia Broadcating)周波数帯域の信号を基底帯域(Baseband)信号に変換するチューナー(Tunner)と;
前記チューナーによって基底帯域信号に変換された、拡散変造(Modulation)された信号を復調(Demodulation)し、チャンネルに独立的なPNコード(Pseudo random Noise Code)を前記復調された信号に掛けるCDM復調器(Demodulator)と;
前記CDM復調器によってPNコードが掛けられた信号に対するビットデインターリービング(Bit Deinterleaving)を実行した後、この信号に、順方向リンクでチャンネルを区分する識別字機能を担当するウォルシュコード(Walsh Code)を掛けてから積分して、選択された放送チャンネルに対するチャンネルデータを抽出し、抽出されたチャンネルデータに対する前進型誤信号訂正(FEC:Forward Error Correction)を実行するチャンネル復号器(Channel Decoder)と;
前記チャンネル復号器によって前進型誤信号訂正された放送チャンネルデータに対する映像復号化を行う映像復号器(Picture Decoder)と;
を含んでなることを特徴とする、請求項1に記載のチャンネル変更時間を短縮させたDMB受信装置。 - 前記チャンネル復号器が、
前記CDM復調器によってPNコードが掛けられた信号に対するビットデインターリービング(Bit Deinterleaving)を実行するビットデインターリーバー(Bit Deinterleaver)と;
前記ビットデインターリーバーによってビットデインターリービング(Bit Deinterleaving)処理された信号に、順方向リンクでチャンネルを区分する識別字機能を担当するウォルシュコード(Walsh Code)を掛ける乗算器と;
前記乗算器によって処理された信号を積分して、選択された放送チャンネルに対するチャンネルデータを抽出する積分器と;
前記積分器によって抽出された放送チャンネルデータに対するビタビ復号化(Viterbi Decoding)を行うビタビ復号器(Viterbi Decoder)と;
前記ビタビ復号器によってビタビ復号化された放送チャンネルデータに対するバイトデインターリービング(Byte Deinterleaving)を実行するバイトデインターリーバー(Byte Deinterleaver)と;
前記バイトデインターリーバーによってバイトデインターリービング処理された放送チャンネルデータに対するリードソロモン復号化(Reed−Solomon Decoding)を行うリードソロモン復号器(Reed−Solomon Decoder)と;
を含むことを特徴とする、請求項2に記載のチャンネル変更時間を短縮させたDMB受信装置。 - 前記ビットデインターリーバーが、8バイト(Byte)単位でビットデインターリービング(Bit Deinterleaving)を実行することを特徴とする、請求項3に記載のチャンネル変更時間を短縮させたDMB受信装置。
- 前記ビットデインターリーバーが、ソフトウェア的に具現されることを特徴とする、請求項4に記載のチャンネル変更時間を短縮させたDMB受信装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2005-0120448 | 2005-12-09 | ||
KR20050120448A KR100786400B1 (ko) | 2005-12-09 | 2005-12-09 | 채널 변경 시간을 단축한 dmb 수신장치 |
Publications (2)
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JP2007166586A true JP2007166586A (ja) | 2007-06-28 |
JP4955346B2 JP4955346B2 (ja) | 2012-06-20 |
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JP2006235611A Active JP4955346B2 (ja) | 2005-12-09 | 2006-08-31 | チャンネル変更時間を短縮させたdmb受信装置 |
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US (1) | US20070133661A1 (ja) |
JP (1) | JP4955346B2 (ja) |
KR (1) | KR100786400B1 (ja) |
Families Citing this family (1)
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CN109889311B (zh) * | 2019-03-25 | 2020-06-12 | 西安电子科技大学 | 基于组合编码的间隙信道通信方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002530996A (ja) * | 1998-11-23 | 2002-09-17 | クゥアルコム・インコーポレイテッド | 異なるデータレートの信号処理 |
JP2005124144A (ja) * | 2003-10-16 | 2005-05-12 | Samsung Electronics Co Ltd | チャンネル転換待機時間を用いたディジタルマルチメディア放送システムの付加サービス提供のための伝送ストリーム、装置、方法及びその放送受信端末機 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100651500B1 (ko) * | 2000-08-30 | 2006-11-28 | 삼성전자주식회사 | 디지털 오디오 방송용 타임 디인터리버 메모리의 제어 장치 |
US7573805B2 (en) * | 2001-12-28 | 2009-08-11 | Motorola, Inc. | Data transmission and reception method and apparatus |
US7793170B2 (en) * | 2004-05-13 | 2010-09-07 | Ittiam Systems (P) Ltd. | Method and apparatus for combining de-interleaving with FFT and demapping |
CN101010953A (zh) * | 2004-09-06 | 2007-08-01 | 三星电子株式会社 | 接收数字多媒体广播信号的设备和方法 |
KR100617129B1 (ko) * | 2004-11-22 | 2006-08-31 | 엘지전자 주식회사 | 순방향 오류정정 부호화부를 포함한 디지털 멀티미디어방송 수신장치 |
KR100777280B1 (ko) * | 2004-12-17 | 2007-11-20 | 엘지전자 주식회사 | 순방향 오류정정 부호화부를 포함하는 디지털 멀티미디어 방송 수신장치 |
US8295250B2 (en) * | 2006-07-24 | 2012-10-23 | Qualcomm Incorporated | Code interleaving for a structured code |
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2005
- 2005-12-09 KR KR20050120448A patent/KR100786400B1/ko active IP Right Grant
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2006
- 2006-08-31 JP JP2006235611A patent/JP4955346B2/ja active Active
- 2006-10-17 US US11/582,587 patent/US20070133661A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002530996A (ja) * | 1998-11-23 | 2002-09-17 | クゥアルコム・インコーポレイテッド | 異なるデータレートの信号処理 |
JP2005124144A (ja) * | 2003-10-16 | 2005-05-12 | Samsung Electronics Co Ltd | チャンネル転換待機時間を用いたディジタルマルチメディア放送システムの付加サービス提供のための伝送ストリーム、装置、方法及びその放送受信端末機 |
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US20070133661A1 (en) | 2007-06-14 |
JP4955346B2 (ja) | 2012-06-20 |
KR20070060625A (ko) | 2007-06-13 |
KR100786400B1 (ko) | 2007-12-17 |
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