JP4658043B2 - Stbにおける復調方法 - Google Patents
Stbにおける復調方法 Download PDFInfo
- Publication number
- JP4658043B2 JP4658043B2 JP2006518198A JP2006518198A JP4658043B2 JP 4658043 B2 JP4658043 B2 JP 4658043B2 JP 2006518198 A JP2006518198 A JP 2006518198A JP 2006518198 A JP2006518198 A JP 2006518198A JP 4658043 B2 JP4658043 B2 JP 4658043B2
- Authority
- JP
- Japan
- Prior art keywords
- tuner
- local oscillator
- demodulator
- frequency
- telephone base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims description 29
- 230000015572 biosynthetic process Effects 0.000 claims description 11
- 238000003786 synthesis reaction Methods 0.000 claims description 11
- 238000012937 correction Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims 1
- 238000001228 spectrum Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Images
Classifications
-
- 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
- H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
- H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
-
- 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
- H04N5/455—Demodulation-circuits
-
- 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
- H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
-
- 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
-
- 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
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/4425—Monitoring of client processing errors or hardware failure
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Databases & Information Systems (AREA)
- Noise Elimination (AREA)
- Circuits Of Receivers In General (AREA)
- Superheterodyne Receivers (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Description
Claims (7)
- 局部発振器を備えたチューナと、該チューナの下流に配置され、エラー訂正装置およびエラーインジケータを備えた復調器と、ディジタルテレフォンベースとが設けられている受信機/デコーダにおける復調方法であって、
前記ディジタルテレフォンベースとの干渉が発生した場合、前記復調器内に配置されているエラーインジケータのスキャン後、前記復調器に設けられた前記エラー訂正装置によって訂正されていないエラーの検出があれば、前記チューナの局部発振器の周波数を1または複数の合成インターバルだけシフトすることを特徴とする、
受信機/デコーダにおける復調方法。 - エラーインジケータをスキャンするプロセスは、前記受信機/デコーダの受信帯域の敏感な部分で実行されることを特徴とする請求項1に記載の方法。
- エラーインジケータをスキャンするプロセスは、新しいチャネルへのスキップを伴って実行されることを特徴とする請求項1または2に記載の方法。
- エラーインジケータをスキャンするプロセスは、バックグラウンドタスクとして実行されることを特徴とする請求項1または2に記載の方法。
- 局部発振器を有するチューナと、該チューナの下流に配置され、エラー訂正装置およびエラーインジケータを有する復調器と、ディジタルテレフォンベースとを備えた受信機/デコーダであって、
前記復調器内に配置されているエラーインジケータのスキャンのためのプログラムであって、前記ディジタルテレフォンベースとの干渉が発生した場合、前記チューナの局部発振器の周波数を1または複数の合成インターバルだけシフトするソフトウエアプログラムをさらに備えることを特徴とする、
受信機/デコーダ。 - 局部発振器の周波数シフトは、1つまたは複数の合成インターバルだけ有効にされることを特徴とする請求項5の装置。
- 局部発振器の周波数シフトは、最大で、復調器により自動的に補償可能ないしは相殺可能なシフトと等しいことを特徴とする請求項6記載の装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0307933A FR2857199A1 (fr) | 2003-07-01 | 2003-07-01 | Procede de demodulation dans une stb |
PCT/EP2004/051228 WO2005004486A1 (en) | 2003-07-01 | 2004-06-24 | Method of demodulation in an stb |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007527132A JP2007527132A (ja) | 2007-09-20 |
JP4658043B2 true JP4658043B2 (ja) | 2011-03-23 |
Family
ID=33522635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006518198A Expired - Fee Related JP4658043B2 (ja) | 2003-07-01 | 2004-06-24 | Stbにおける復調方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US20060150226A1 (ja) |
EP (1) | EP1639824A1 (ja) |
JP (1) | JP4658043B2 (ja) |
KR (1) | KR101061570B1 (ja) |
CN (1) | CN1817043A (ja) |
FR (1) | FR2857199A1 (ja) |
MX (1) | MXPA05014125A (ja) |
WO (1) | WO2005004486A1 (ja) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11186923A (ja) * | 1997-12-19 | 1999-07-09 | Sony Corp | 携帯通信装置および受信方法 |
JP2003133974A (ja) * | 2001-10-29 | 2003-05-09 | Matsushita Electric Ind Co Ltd | 高周波装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9005750D0 (en) * | 1990-03-14 | 1990-05-09 | Linear Modulation Tech | Frequency control in single sideband mobile radio systems |
EP0782271B1 (en) * | 1995-12-28 | 2002-03-13 | Thomson Consumer Electronics, Inc. | Phase locked loop with controllable response time |
JPH09326837A (ja) * | 1996-06-06 | 1997-12-16 | Kokusai Electric Co Ltd | 自動周波数制御方法とその回路、受信機 |
WO2001006768A1 (en) * | 1999-07-16 | 2001-01-25 | Thomson Licensing S.A. | Television receiver for digital signals with offset tuning provisions |
CN1196307C (zh) * | 1999-11-04 | 2005-04-06 | 皇家菲利浦电子有限公司 | 综合话音邮件业务与电视功能的通信设备 |
JP3906792B2 (ja) * | 2002-01-22 | 2007-04-18 | 松下電器産業株式会社 | 高周波信号受信装置とその製造方法 |
-
2003
- 2003-07-01 FR FR0307933A patent/FR2857199A1/fr active Pending
-
2004
- 2004-06-24 US US10/562,999 patent/US20060150226A1/en not_active Abandoned
- 2004-06-24 JP JP2006518198A patent/JP4658043B2/ja not_active Expired - Fee Related
- 2004-06-24 WO PCT/EP2004/051228 patent/WO2005004486A1/en active Application Filing
- 2004-06-24 EP EP04766071A patent/EP1639824A1/en not_active Ceased
- 2004-06-24 KR KR1020057025249A patent/KR101061570B1/ko not_active IP Right Cessation
- 2004-06-24 CN CNA2004800187351A patent/CN1817043A/zh active Pending
- 2004-06-24 MX MXPA05014125A patent/MXPA05014125A/es active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11186923A (ja) * | 1997-12-19 | 1999-07-09 | Sony Corp | 携帯通信装置および受信方法 |
JP2003133974A (ja) * | 2001-10-29 | 2003-05-09 | Matsushita Electric Ind Co Ltd | 高周波装置 |
Also Published As
Publication number | Publication date |
---|---|
KR101061570B1 (ko) | 2011-09-02 |
WO2005004486A1 (en) | 2005-01-13 |
WO2005004486A8 (en) | 2005-06-02 |
FR2857199A1 (fr) | 2005-01-07 |
US20060150226A1 (en) | 2006-07-06 |
EP1639824A1 (en) | 2006-03-29 |
MXPA05014125A (es) | 2006-04-07 |
CN1817043A (zh) | 2006-08-09 |
JP2007527132A (ja) | 2007-09-20 |
WO2005004486B1 (en) | 2005-04-28 |
KR20060022293A (ko) | 2006-03-09 |
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