DE69516771D1 - Vorrichtung und verfahren zur verbesserung der synchronisationserzeugung eines taktsystems - Google Patents
Vorrichtung und verfahren zur verbesserung der synchronisationserzeugung eines taktsystemsInfo
- Publication number
- DE69516771D1 DE69516771D1 DE69516771T DE69516771T DE69516771D1 DE 69516771 D1 DE69516771 D1 DE 69516771D1 DE 69516771 T DE69516771 T DE 69516771T DE 69516771 T DE69516771 T DE 69516771T DE 69516771 D1 DE69516771 D1 DE 69516771D1
- Authority
- DE
- Germany
- Prior art keywords
- improving
- clock system
- synchronization generation
- synchronization
- generation
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
- H04N5/126—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising whereby the synchronisation signal indirectly commands a frequency generator
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
-
- 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
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4305—Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/196,918 US5612981A (en) | 1994-02-15 | 1994-02-15 | Apparatus and methods for improving timing recovery of a system clock |
PCT/IB1995/000068 WO1995022855A2 (en) | 1994-02-15 | 1995-02-01 | Apparatus and methods for improving timing recovery of a system clock |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69516771D1 true DE69516771D1 (de) | 2000-06-15 |
DE69516771T2 DE69516771T2 (de) | 2000-11-23 |
Family
ID=22727283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69516771T Expired - Fee Related DE69516771T2 (de) | 1994-02-15 | 1995-02-01 | Vorrichtung und verfahren zur verbesserung der synchronisationserzeugung eines taktsystems |
Country Status (5)
Country | Link |
---|---|
US (1) | US5612981A (de) |
EP (1) | EP0699369B1 (de) |
JP (1) | JPH08509346A (de) |
DE (1) | DE69516771T2 (de) |
WO (1) | WO1995022855A2 (de) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0710033A3 (de) * | 1994-10-28 | 1999-06-09 | Matsushita Electric Industrial Co., Ltd. | MPEG Videodekoder mit breitbandigem Speicher |
JP2891149B2 (ja) * | 1995-11-20 | 1999-05-17 | 日本電気株式会社 | 位相制御ループ方式 |
SE9504316D0 (sv) * | 1995-12-01 | 1995-12-01 | Nokia Satellite Systems Ab | Sätt och system vid dataöverföring |
DE19630397C1 (de) * | 1996-07-26 | 1997-12-04 | Siemens Ag | Verfahren zum Erzielen einer gewünschten Solldifferenz zwischen dem Zählstand eines durch ein erstes Taktsignal zum Zählen veranlaßten ersten Zählers und dem Zählstand eines durch ein zweites Taktsignal zum Zählen veranlaßten zweiten Zählers |
DE19647093A1 (de) * | 1996-11-14 | 1998-05-28 | Bosch Gmbh Robert | Verfahren zur Aktualisierung von Zeitmarken in einem digitalen Datenstrom und Remultiplexer |
JPH10322259A (ja) * | 1997-05-19 | 1998-12-04 | Matsushita Electric Ind Co Ltd | デジタルコードレス通信システム |
US6078594A (en) * | 1997-09-26 | 2000-06-20 | International Business Machines Corporation | Protocol and procedure for automated channel change in an MPEG-2 compliant datastream |
US6181706B1 (en) | 1997-09-26 | 2001-01-30 | International Business Machines Corporation | Common buffer for multiple streams and control registers in an MPEG-2 compliant transport register |
US6356567B2 (en) | 1997-09-26 | 2002-03-12 | International Business Machines Corporation | Embedded clock recovery and difference filtering for an MPEG-2 compliant transport stream |
US6195403B1 (en) | 1997-09-26 | 2001-02-27 | International Business Machines Corporation | Pulse generator for a voltage controlled oscillator |
US6088357A (en) * | 1997-09-26 | 2000-07-11 | International Business Machines Corporation | Auxiliary transport assist processor especially for an MPEG-2 compliant decoder |
US6229801B1 (en) | 1997-09-26 | 2001-05-08 | International Business Machines Corporation | Delivery of MPEG2 compliant table data |
US6275507B1 (en) | 1997-09-26 | 2001-08-14 | International Business Machines Corporation | Transport demultiplexor for an MPEG-2 compliant data stream |
US6115422A (en) * | 1997-09-26 | 2000-09-05 | International Business Machines Corporation | Protocol and procedure for time base change in an MPEG-2 compliant datastream |
US6072771A (en) * | 1997-09-26 | 2000-06-06 | International Business Machines Corporation | Detection of errors in table data |
US6377588B1 (en) * | 1997-11-25 | 2002-04-23 | Nec Corporation | Method and apparatus for reducing jitter of a program clock reference in a transport stream of MPEG over ATM, and MPEG decoder |
DE69801827T2 (de) * | 1998-11-14 | 2002-03-28 | Agilent Technologies, Inc. (N.D.Ges.D.Staates Delaware) | Taktgenerator |
US6556250B1 (en) | 1999-08-10 | 2003-04-29 | General Instrument Corporation | Method and apparatus for providing a timing signal with high frequency accuracy in video equipment for supporting an on-screen display in the absence of a video signal |
US6760798B1 (en) * | 2000-07-13 | 2004-07-06 | Arm Limited | Interface mechanism and method for interfacing a real-time clock with a data processing circuit |
KR100442286B1 (ko) * | 2002-02-25 | 2004-07-30 | 엘지전자 주식회사 | 디지털 방송 수신기의 색재현 오차 보상 장치 및 방법 |
US6917247B2 (en) * | 2002-04-26 | 2005-07-12 | Broadcom Corporation | NCO based timebase recovery system and method for A/V decoder |
US7230651B2 (en) * | 2002-10-22 | 2007-06-12 | Broadcom Corporation | A/V decoder having a clocking scheme that is independent of input data streams |
US20040230673A1 (en) * | 2003-04-17 | 2004-11-18 | International Business Machines Corporation | Virtual counter device tolerant to hardware counter resets |
WO2005084037A2 (en) * | 2004-02-26 | 2005-09-09 | Thomson Licensing | Method and apparatus for setting a voltage controlled crystal oscillator in a video processing device |
WO2006064572A1 (ja) | 2004-12-17 | 2006-06-22 | Mitsubishi Denki Kabushiki Kaisha | クロック信号生成装置および無線基地局 |
FR2898454A1 (fr) * | 2006-03-13 | 2007-09-14 | Thomson Licensing Sas | Mecanisme securise pour la transmission de valeur de compteur pour la transmission d'un signal genlock sur un reseau ip |
US9544638B2 (en) * | 2006-04-17 | 2017-01-10 | Broadcom Corporation | Method for reconstructing system time clock (STC) without carrying PCR |
US8255962B2 (en) * | 2008-05-28 | 2012-08-28 | Broadcom Corporation | Edge device reception verification/non-reception verification links to differing devices |
US20090300687A1 (en) * | 2008-05-28 | 2009-12-03 | Broadcom Corporation | Edge device establishing and adjusting wireless link parameters in accordance with qos-desired video data rate |
US8209733B2 (en) * | 2008-05-28 | 2012-06-26 | Broadcom Corporation | Edge device that enables efficient delivery of video to handheld device |
JP5007832B2 (ja) * | 2008-06-30 | 2012-08-22 | トヨタ紡織株式会社 | 車載用無線装置 |
EP2434757B1 (de) * | 2009-05-22 | 2016-11-23 | MegaChips Corporation | Videoabspielsystem und videoabspielverfahren |
JP6164680B2 (ja) * | 2012-12-27 | 2017-07-19 | リーダー電子株式会社 | ジッタ関連データを生成する方法および装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4151485A (en) * | 1977-11-21 | 1979-04-24 | Rockwell International Corporation | Digital clock recovery circuit |
IT1184024B (it) * | 1985-12-17 | 1987-10-22 | Cselt Centro Studi Lab Telecom | Perfezionamenti ai circuiti ad aggancio di fase numerici |
EP0544358B1 (de) * | 1991-11-25 | 1995-08-16 | Koninklijke Philips Electronics N.V. | Phasenregelschleife mit Frequenzabweichungsdetektor und Decodierschaltung mit einer solchen Phasenregelschleife |
EP0567033B1 (de) * | 1992-04-23 | 1997-12-10 | Hitachi, Ltd. | Frequenzsynthesierer |
US5287182A (en) * | 1992-07-02 | 1994-02-15 | At&T Bell Laboratories | Timing recovery for variable bit-rate video on asynchronous transfer mode (ATM) networks |
FR2693865B1 (fr) * | 1992-07-17 | 1994-08-26 | Thomson Csf | Procédé et dispositif de synchronisation d'un décodeur connecté à un réseau de transmission asynchrone, notamment de type ATM. |
JP2762852B2 (ja) * | 1992-07-30 | 1998-06-04 | 日本電気株式会社 | 周波数安定化回路 |
US5260978A (en) * | 1992-10-30 | 1993-11-09 | Bell Communications Research, Inc. | Synchronous residual time stamp for timing recovery in a broadband network |
US5381181A (en) * | 1993-05-13 | 1995-01-10 | Thomson Consumer Electronics, Inc. | Clock recovery apparatus as for a compressed video signal |
US5486864A (en) * | 1993-05-13 | 1996-01-23 | Rca Thomson Licensing Corporation | Differential time code method and apparatus as for a compressed video signal |
US5448598A (en) * | 1993-07-06 | 1995-09-05 | Standard Microsystems Corporation | Analog PLL clock recovery circuit and a LAN transceiver employing the same |
US5430485A (en) * | 1993-09-30 | 1995-07-04 | Thomson Consumer Electronics, Inc. | Audio/video synchronization in a digital transmission system |
-
1994
- 1994-02-15 US US08/196,918 patent/US5612981A/en not_active Expired - Fee Related
-
1995
- 1995-02-01 JP JP7521691A patent/JPH08509346A/ja not_active Ceased
- 1995-02-01 DE DE69516771T patent/DE69516771T2/de not_active Expired - Fee Related
- 1995-02-01 EP EP95905744A patent/EP0699369B1/de not_active Expired - Lifetime
- 1995-02-01 WO PCT/IB1995/000068 patent/WO1995022855A2/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
US5612981A (en) | 1997-03-18 |
EP0699369A1 (de) | 1996-03-06 |
WO1995022855A3 (en) | 1995-09-28 |
JPH08509346A (ja) | 1996-10-01 |
WO1995022855A2 (en) | 1995-08-24 |
EP0699369B1 (de) | 2000-05-10 |
DE69516771T2 (de) | 2000-11-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |