FI112144B - Audio/videosynkronisering i ett digitalt sändningssystem - Google Patents

Audio/videosynkronisering i ett digitalt sändningssystem Download PDF

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Publication number
FI112144B
FI112144B FI944529A FI944529A FI112144B FI 112144 B FI112144 B FI 112144B FI 944529 A FI944529 A FI 944529A FI 944529 A FI944529 A FI 944529A FI 112144 B FI112144 B FI 112144B
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FI
Finland
Prior art keywords
signal
audio
video
time
ptsaud
Prior art date
Application number
FI944529A
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English (en)
Finnish (fi)
Other versions
FI944529A (sv
FI944529A0 (sv
Inventor
Michael Scott Deiss
Douglas Edward Lankford
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Thomson Consumer Electronics
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Filing date
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Publication of FI944529A0 publication Critical patent/FI944529A0/sv
Publication of FI944529A publication Critical patent/FI944529A/sv
Application granted granted Critical
Publication of FI112144B publication Critical patent/FI112144B/sv

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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
    • H04N21/43—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
    • 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
    • H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
    • H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
    • H04N21/43072—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen of multiple content streams on the same device
    • 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
    • H04N21/4341—Demultiplexing of audio and video streams
    • 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
    • H04N21/439—Processing of audio elementary streams
    • H04N21/4392—Processing of audio elementary streams involving audio buffer management
    • 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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/854—Content authoring
    • H04N21/8547—Content authoring involving timestamps for synchronizing content
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • 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
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H04N5/602—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for digital sound signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/24—Systems for the transmission of television signals using pulse code modulation
    • H04N7/52—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal
    • H04N7/54—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal the signals being synchronous
    • H04N7/56—Synchronising systems therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Television Receiver Circuits (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Signal Processing For Recording (AREA)
  • Television Systems (AREA)
  • Synchronizing For Television (AREA)
  • Details Of Television Systems (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Claims (9)

1. Anordning för att bilda synkroniserade, repro-ducerade audio- och videosignaler fran en äterställd kom-primerad audio- och videosignal, vilka audio- och video-5 signaler innehäller motsvarande tidsstämplar PTSaud och PTSvid, som fastställts med förutbestämda tidsperioder och som hänför sig till en kodares systemklocka, varvid nämnda anordning är kännetecknad av: en kalla (200) för nämnda äterställda komprimerade 10 audio- och videosignaler och en kalla (208) för en lokal klocksignal; en videosignaldekomprimeringsanordning (214) som är gensvarig pä nämnda äterställda komprimerade videosig-nal för att bilda en dekomprimerad videosignal och nämnda 15 tidsstämpel PTSvid; en audiosignaldekomprimeringsanordning (212) som är gensvarig pä nämnda äterställda komprimerade audiosig-nal för att bilda en dekomprimerad audiosignal och nämnda tidsstämpel PTSaud; 20 medel (217, 218, 220, 222) för att i perioder för nämnda lokala klocksignal fastställa tidpunkterna T mellan ,·, ; mottagningarna av motsvarande tidsstämplar PTSaud och ; ,·. PTSvid; "Y medel (219) för att beräkna skillnaden mellan vär- ···; 25 dena för motsvarande tidsstämplar PTSaud och PTSvid och ge- >··'· nerera en A/V-synkroniseringsfelsignal genom att jämföra V · skillnaden med nämnda tidpunkt T; och medel (215, 216) som är gensvariga pä nämnda A/V- j ' : synkroniseringsfelsignal för synkronisering av de dekom- 30 primerade audio- och videosignalerna.
, 2. Anordning enligt patentkrav 1, kännetecknad YY av att nämnda medel för att fastställa tidpunkten T omfat- tar en räknare för beräkning av den lokala klocksignalens : : : perioder och för att bilda ett värde som representerar :*·,· 35 nämnda tidpunkt T, vilket värde är lika med antalet perio- * » 20 112144 der för nämnda klocksignal som förekommer mellan förekoms-terna av nämnda motsvarande tidsstämplar PTSaud och PTSvid.
3. Anordning enligt patentkrav 1, kännetecknad av att nämnda medel för att fastställa tidpunkten T omfat-5 tar: en räknare som är gensvarig pä nämnda lokala klocksignal för att bilda en serie räknevärden modulo N, där N är ett heltal; och medel som är gensvariga pä förekomsten av nämnda 10 tidsstämplar PTSaud för att infänga ett första räknevärde och gensvariga pä förekomsten av en motsvarande tidsstäm-pel PTSvid för att infänga ett andra räknevärde; en subtraktionskrets för att fastställa skillnaden mellan nämnda första och andra räknevärden.
4. Anordning enligt patentkrav 1, kännetecknad av att nämnda äterställda audio- och videosignal inklude-rar systemklockreferenser (SCR) och nämnda anordning om-fattar medel gensvariga pä systemklockreferenserna för att generera nämnda lokala klocksignal synkront med nämnda ko-20 dares systemklocka.
5. Anordning enligt patentkrav 1, kännetecknad : av att nämnda videosignaldekomprimeringsanordning bildar en dekomprimerad videosignal i första förutbestämda tids-J : perioder och nämnda audiosignaldekomprimeringsanordning *:· 25 bildar en dekomprimerad audiosignal i andra förutbestämda · tidsperioder och att nämnda synkroniseringsmedel omfattar en anordning som är gensvarig pä nämnda A/V-synkroniseringsfelsignal för att hoppa över eller upprepa , . enskilda av nämnda andra förutbestämda tidsperioder av 30 nämnda dekomprimerade audiosignal.
;·’ 6. Anordning enligt patentkrav 5, kännetecknad : ; : av att nämnda audiosignaldekomprimeringsanordning omfattar en källa för en bearbetningsklocksignal för användning av nämnda audiosignaldekomprimeringsanordning och nämnda syn-; ' 35 kroniseringsmedel omfattar dessutom en anordning som är » I gensvarig pä nämnda A/V-synkroniseringsfelsignal för att 21 112144 ändra nämnda bearbetningsklocksignals frekvens.
7. Anordning enligt patentkrav 6, kännetecknad av att nämnda anordning för att ändra nämnda bearbetningsklocksignals frekvens omfattar en binärfrekvensmultiplika- 5 tor.
8. Anordning enligt patentkrav 3, kännetecknad av att nämnda videosignaldekomprimeringsanordning bildar en dekomprimerad videosignal i första förutbestämda tids-perioder och nämnda audiosignaldekomprimeringsanordning 10 bildar en dekomprimerad audiosignal i andra förutbestämda tidsperioder och att nämnda synkroniseringsmedel omfattar en anordning som är gensvarig pä nämnda A/V-synkroniseringsfelsignal för att hoppa över eller upprepa enskilda av nämnda andra förutbestämda tidsperioder av 15 nämnda dekomprimerade audiosignal.
9. Anordning enligt patentkrav 8, kännetecknad av att nämnda audiosignaldekomprimeringsanordning omfattar en källa för en bearbetningsklocksignal för användning av nämnda audiosignaldekomprimeringsanordning och nämnda syn- 20 kroniseringsmedel omfattar dessutom en anordning som är gensvarig pä nämnda A/V-synkroniseringsfelsignal för att V : ändra nämnda bearbetningsklocksignals frekvens. » · < 1 I ‘ > · * * · • * t » » » I * · • t f t » < I 1. t ‘ · * »
FI944529A 1993-09-30 1994-09-29 Audio/videosynkronisering i ett digitalt sändningssystem FI112144B (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12997493 1993-09-30
US08/129,974 US5430485A (en) 1993-09-30 1993-09-30 Audio/video synchronization in a digital transmission system

Publications (3)

Publication Number Publication Date
FI944529A0 FI944529A0 (sv) 1994-09-29
FI944529A FI944529A (sv) 1995-03-31
FI112144B true FI112144B (sv) 2003-10-31

Family

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Family Applications (1)

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FI944529A FI112144B (sv) 1993-09-30 1994-09-29 Audio/videosynkronisering i ett digitalt sändningssystem

Country Status (15)

Country Link
US (1) US5430485A (sv)
EP (1) EP0648056B1 (sv)
JP (4) JP3633972B2 (sv)
KR (1) KR100337212B1 (sv)
CN (1) CN1053308C (sv)
AU (1) AU684520B2 (sv)
CA (1) CA2132186C (sv)
DE (1) DE69417139T2 (sv)
ES (1) ES2131139T3 (sv)
FI (1) FI112144B (sv)
MY (1) MY111711A (sv)
PL (1) PL174674B1 (sv)
RU (1) RU2142210C1 (sv)
SG (1) SG70960A1 (sv)
TR (1) TR28210A (sv)

Families Citing this family (169)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7382929B2 (en) 1989-05-22 2008-06-03 Pixel Instruments Corporation Spatial scan replication circuit
US5768629A (en) 1993-06-24 1998-06-16 Discovision Associates Token-based adaptive video processing arrangement
US5430485A (en) * 1993-09-30 1995-07-04 Thomson Consumer Electronics, Inc. Audio/video synchronization in a digital transmission system
US5612981A (en) * 1994-02-15 1997-03-18 Philips Electronics North America Corporation Apparatus and methods for improving timing recovery of a system clock
JP3197766B2 (ja) * 1994-02-17 2001-08-13 三洋電機株式会社 Ｍｐｅｇオーディオデコーダ、ｍｐｅｇビデオデコーダおよびｍｐｅｇシステムデコーダ
US5566174A (en) * 1994-04-08 1996-10-15 Philips Electronics North America Corporation MPEG information signal conversion system
US5521979A (en) * 1994-04-22 1996-05-28 Thomson Consumer Electronics, Inc. Packet video signal inverse transport system
US5642171A (en) * 1994-06-08 1997-06-24 Dell Usa, L.P. Method and apparatus for synchronizing audio and video data streams in a multimedia system
US5734432A (en) * 1994-07-15 1998-03-31 Lucent Technologies, Inc. Method of incorporating a variable rate auxiliary data stream with a variable rate primary data stream
US5603016A (en) * 1994-08-03 1997-02-11 Intel Corporation Method for synchronizing playback of an audio track to a video track
GB9512068D0 (en) * 1995-06-14 1995-08-09 Thomson Consumer Electronics Bus and interface system for consumer digital equipment
US6236694B1 (en) * 1994-08-19 2001-05-22 Thomson Licensing S.A. Bus and interface system for consumer digital equipment
US5594660A (en) * 1994-09-30 1997-01-14 Cirrus Logic, Inc. Programmable audio-video synchronization method and apparatus for multimedia systems
US5598352A (en) * 1994-09-30 1997-01-28 Cirrus Logic, Inc. Method and apparatus for audio and video synchronizing in MPEG playback systems
US5920842A (en) * 1994-10-12 1999-07-06 Pixel Instruments Signal synchronization
US5771075A (en) * 1994-12-08 1998-06-23 Lg Electronics Inc. Audio/video synchronizer
US5905768A (en) * 1994-12-13 1999-05-18 Lsi Logic Corporation MPEG audio synchronization system using subframe skip and repeat
US5588029A (en) * 1995-01-20 1996-12-24 Lsi Logic Corporation MPEG audio synchronization system using subframe skip and repeat
IT1268195B1 (it) * 1994-12-23 1997-02-21 Sip Decodificatore per segnali audio appartenenti a sequenze audiovisive compresse e codificate.
US5543853A (en) * 1995-01-19 1996-08-06 At&T Corp. Encoder/decoder buffer control for variable bit-rate channel
US5621772A (en) * 1995-01-20 1997-04-15 Lsi Logic Corporation Hysteretic synchronization system for MPEG audio frame decoder
US5751694A (en) * 1995-05-22 1998-05-12 Sony Corporation Methods and apparatus for synchronizing temporally related data streams
US6119213A (en) * 1995-06-07 2000-09-12 Discovision Associates Method for addressing data having variable data width using a fixed number of bits for address and width defining fields
US5920572A (en) * 1995-06-30 1999-07-06 Divicom Inc. Transport stream decoder/demultiplexer for hierarchically organized audio-video streams
US6058141A (en) * 1995-09-28 2000-05-02 Digital Bitcasting Corporation Varied frame rate video
JPH09149411A (ja) * 1995-11-24 1997-06-06 Ekushingu:Kk 復号化装置
US6836295B1 (en) 1995-12-07 2004-12-28 J. Carl Cooper Audio to video timing measurement for MPEG type television systems
US5784572A (en) * 1995-12-29 1998-07-21 Lsi Logic Corporation Method and apparatus for compressing video and voice signals according to different standards
US5835493A (en) * 1996-01-02 1998-11-10 Divicom, Inc. MPEG transport stream remultiplexer
US5828414A (en) * 1996-02-23 1998-10-27 Divicom, Inc. Reduction of timing jitter in audio-video transport streams
US5875354A (en) * 1996-03-01 1999-02-23 Apple Computer, Inc. System for synchronization by modifying the rate of conversion by difference of rate between first clock and audio clock during a second time period
US6233256B1 (en) * 1996-03-13 2001-05-15 Sarnoff Corporation Method and apparatus for analyzing and monitoring packet streams
JPH09266460A (ja) * 1996-03-28 1997-10-07 Sony Corp 送受信システム
US5878039A (en) * 1996-04-24 1999-03-02 Nec America, Inc. Bus rate adaptation and time slot assignment circuit for a sonet multiplex system
US6181383B1 (en) 1996-05-29 2001-01-30 Sarnoff Corporation Method and apparatus for preserving synchronization of audio and video presentation when splicing transport streams
JP3418065B2 (ja) * 1996-06-26 2003-06-16 三菱電機株式会社 光ディスク
JP3186775B2 (ja) 1996-07-05 2001-07-11 松下電器産業株式会社 Ｖｏｐの時刻復号化方法
JP3063824B2 (ja) * 1996-10-29 2000-07-12 日本電気株式会社 オーディオ・ビデオ同期再生装置
EP2175659B1 (en) 1996-12-04 2012-11-14 Panasonic Corporation Optical disk for high resolution and three-dimensional video recording, optical disk reproduction apparatus, and optical disk recording apparatus
JP3454653B2 (ja) * 1996-12-27 2003-10-06 矢崎総業株式会社 データ送信装置、データ受信装置、データ通信装置、及びデータ通信方法
EP1010318A4 (en) 1997-02-14 2001-01-31 Univ Columbia OBJECT-BASED AUDIOVISUAL TERMINAL AND BINARY TRAIN STRUCTURE
EP0880246A3 (en) 1997-05-15 1999-12-01 Matsushita Electric Industrial Co., Ltd. Compressed code decoding device and audio decoding device
GB2326781B (en) * 1997-05-30 2001-10-10 British Broadcasting Corp Video and audio signal processing
US6236681B1 (en) 1997-07-31 2001-05-22 Lsi Logic Corporation Method for decoding MPEG compliant video bitstreams meeting 2-frame and letterboxing requirements
US6289053B1 (en) 1997-07-31 2001-09-11 Lsi Logic Corporation Architecture for decoding MPEG compliant video bitstreams meeting 2-frame and letterboxing requirements
US6310918B1 (en) 1997-07-31 2001-10-30 Lsi Logic Corporation System and method for motion vector extraction and computation meeting 2-frame store and letterboxing requirements
US6101221A (en) * 1997-07-31 2000-08-08 Lsi Logic Corporation Video bitstream symbol extractor for use in decoding MPEG compliant video bitstreams meeting 2-frame and letterboxing requirements
US6266091B1 (en) 1997-07-31 2001-07-24 Lsi Logic Corporation System and method for low delay mode operation video decoding
US6122316A (en) * 1997-07-31 2000-09-19 Lsi Logic Corporation MPEG decoding system meeting 2-frame store and letterboxing requirements
KR100257070B1 (ko) * 1997-08-14 2000-05-15 김영환 박막트랜지스터 및 이의 제조방법
CA2302370C (en) * 1997-09-04 2004-06-01 Silicon Image, Inc. System and method for high-speed, synchronized data communication
JP3063838B2 (ja) * 1997-10-02 2000-07-12 日本電気株式会社 オーディオ・ビデオ同期再生装置および方法
US5899969A (en) * 1997-10-17 1999-05-04 Dolby Laboratories Licensing Corporation Frame-based audio coding with gain-control words
KR100301826B1 (ko) * 1997-12-29 2001-10-27 구자홍 비디오디코더
KR19990061872A (ko) * 1997-12-31 1999-07-26 서평원 에스티비에서 비디오데이터 전송제어시스템
US6351474B1 (en) 1998-01-14 2002-02-26 Skystream Networks Inc. Network distributed remultiplexer for video program bearing transport streams
US6246701B1 (en) 1998-01-14 2001-06-12 Skystream Corporation Reference time clock locking in a remultiplexer for video program bearing transport streams
US6195368B1 (en) 1998-01-14 2001-02-27 Skystream Corporation Re-timing of video program bearing streams transmitted by an asynchronous communication link
US6292490B1 (en) 1998-01-14 2001-09-18 Skystream Corporation Receipts and dispatch timing of transport packets in a video program bearing stream remultiplexer
US6351471B1 (en) 1998-01-14 2002-02-26 Skystream Networks Inc. Brandwidth optimization of video program bearing transport streams
US7199836B1 (en) * 1998-02-13 2007-04-03 The Trustees Of Columbia University In The City Of New York Object-based audio-visual terminal and bitstream structure
US6081299A (en) * 1998-02-20 2000-06-27 International Business Machines Corporation Methods and systems for encoding real time multimedia data
US6249319B1 (en) * 1998-03-30 2001-06-19 International Business Machines Corporation Method and apparatus for finding a correct synchronization point within a data stream
GB9807295D0 (en) * 1998-04-03 1998-06-03 Snell & Wilcox Ltd Improvements relating to audio-video delay
SE517547C2 (sv) * 1998-06-08 2002-06-18 Ericsson Telefon Ab L M Signalsynkronisering vid signalkvalitetsmätning
US6016166A (en) * 1998-08-31 2000-01-18 Lucent Technologies Inc. Method and apparatus for adaptive synchronization of digital video and audio playback in a multimedia playback system
JP2000092348A (ja) 1998-09-10 2000-03-31 Mitsubishi Electric Corp フレームシンクロナイザ
WO2000064145A1 (en) * 1999-04-20 2000-10-26 Alexandr Vitalievich Kitaev Video camera
DE69927243T2 (de) * 1999-05-25 2006-06-29 Lucent Technologies Inc. Verfahren und Vorrichtung für Telekommunikationen mit Internet-Protokoll
US6583821B1 (en) * 1999-07-16 2003-06-24 Thomson Licensing S.A. Synchronizing apparatus for a compressed audio/video signal receiver
CA2313979C (en) * 1999-07-21 2012-06-12 Thomson Licensing Sa Synchronizing apparatus for a compressed audio/video signal receiver
KR100644562B1 (ko) * 1999-08-20 2006-11-13 삼성전자주식회사 오디오/비디오 신호 동기 장치 및 그 방법
GB0000874D0 (en) 2000-01-14 2000-03-08 Koninkl Philips Electronics Nv Latency handling for interconnected devices
WO2002015591A1 (en) * 2000-08-16 2002-02-21 Koninklijke Philips Electronics N.V. Method of playing multimedia data
US20020089602A1 (en) 2000-10-18 2002-07-11 Sullivan Gary J. Compressed timing indicators for media samples
FR2815805B1 (fr) * 2000-10-23 2005-09-02 Telediffusion De France Tdf Procede de synchronisation de signaux numeriques
US7257129B2 (en) * 2000-11-22 2007-08-14 Silicon Image Memory architecture with multiple serial communications ports
US20020077117A1 (en) * 2000-12-15 2002-06-20 Jocelyn Cloutier Synchronous transmission of data with network remote control
US7030930B2 (en) * 2001-03-06 2006-04-18 Ati Technologies, Inc. System for digitized audio stream synchronization and method thereof
JP2002290932A (ja) 2001-03-27 2002-10-04 Toshiba Corp デジタル放送受信装置とその制御方法
JP4141952B2 (ja) * 2001-07-19 2008-08-27 トムソン ライセンシング 信号の受信を改善する方法、システム、および受信機
JP3591493B2 (ja) * 2001-07-25 2004-11-17 ソニー株式会社 ネットワークシステム、およびネットワークシステムの同期方法
US8880709B2 (en) * 2001-09-12 2014-11-04 Ericsson Television Inc. Method and system for scheduled streaming of best effort data
KR100831213B1 (ko) * 2001-09-17 2008-05-21 엘지전자 주식회사 음성 데이터와 영상 데이터의 재생 동기화 장치 및 방법
US7269338B2 (en) * 2001-12-11 2007-09-11 Koninklijke Philips Electronics N.V. Apparatus and method for synchronizing presentation from bit streams based on their content
US7283566B2 (en) * 2002-06-14 2007-10-16 Silicon Image, Inc. Method and circuit for generating time stamp data from an embedded-clock audio data stream and a video clock
US6850284B2 (en) * 2002-08-27 2005-02-01 Motorola, Inc. Method and apparatus for decoding audio and video information
US7230651B2 (en) * 2002-10-22 2007-06-12 Broadcom Corporation A/V decoder having a clocking scheme that is independent of input data streams
WO2004045197A2 (en) * 2002-11-07 2004-05-27 Thomson Licensing S.A. A system and method for determining lip synchronization between audio and video in a digitized environment using buffer calculation
CN1720749B (zh) 2002-12-04 2010-12-08 三叉微系统(远东)有限公司 自动测试音频/视频同步的方法
FR2849328A1 (fr) * 2002-12-20 2004-06-25 St Microelectronics Sa Procede et dispositif de synchronisation de la presentation de trames audio et/ou de trames video
US6833765B2 (en) * 2003-01-23 2004-12-21 Ess Technology, Inc. Frequency locked loop with improved stability using binary rate multiplier circuits
GB0306973D0 (en) 2003-03-26 2003-04-30 British Telecomm Transmitting video
US11650784B2 (en) 2003-07-28 2023-05-16 Sonos, Inc. Adjusting volume levels
US8234395B2 (en) 2003-07-28 2012-07-31 Sonos, Inc. System and method for synchronizing operations among a plurality of independently clocked digital data processing devices
US11106425B2 (en) 2003-07-28 2021-08-31 Sonos, Inc. Synchronizing operations among a plurality of independently clocked digital data processing devices
US11106424B2 (en) 2003-07-28 2021-08-31 Sonos, Inc. Synchronizing operations among a plurality of independently clocked digital data processing devices
US11294618B2 (en) 2003-07-28 2022-04-05 Sonos, Inc. Media player system
US8290603B1 (en) 2004-06-05 2012-10-16 Sonos, Inc. User interfaces for controlling and manipulating groupings in a multi-zone media system
US8086752B2 (en) 2006-11-22 2011-12-27 Sonos, Inc. Systems and methods for synchronizing operations among a plurality of independently clocked digital data processing devices that independently source digital data
US10613817B2 (en) 2003-07-28 2020-04-07 Sonos, Inc. Method and apparatus for displaying a list of tracks scheduled for playback by a synchrony group
US7693222B2 (en) 2003-08-13 2010-04-06 Ericsson Television Inc. Method and system for re-multiplexing of content-modified MPEG-2 transport streams using PCR interpolation
JP4735932B2 (ja) * 2003-09-02 2011-07-27 ソニー株式会社 コンテンツ受信装置、ビデオオーディオ出力タイミング制御方法及びコンテンツ提供システム
US7366462B2 (en) 2003-10-24 2008-04-29 Qualcomm Incorporated Method and apparatus for seamlessly switching reception between multimedia streams in a wireless communication system
US7570304B1 (en) * 2003-11-21 2009-08-04 Sigma Designs, Inc. Method, apparatus and computer program product for synchronizing presentation of digital video data with serving of digital video data
KR20050052717A (ko) * 2003-12-01 2005-06-07 엘지전자 주식회사 오디오 원본 보존 트랜스코딩 시스템 및 방법
US7405769B2 (en) * 2004-02-09 2008-07-29 Broadcom Corporation Method and system for 3D comb synchronization and alignment of standard and non-standard video signals
GB0406901D0 (en) * 2004-03-26 2004-04-28 British Telecomm Transmitting recorded material
US9977561B2 (en) 2004-04-01 2018-05-22 Sonos, Inc. Systems, methods, apparatus, and articles of manufacture to provide guest access
DE102004017215A1 (de) * 2004-04-05 2005-10-20 Sennheiser Electronic Audiovisuelles System
US7170545B2 (en) * 2004-04-27 2007-01-30 Polycom, Inc. Method and apparatus for inserting variable audio delay to minimize latency in video conferencing
US8024055B1 (en) 2004-05-15 2011-09-20 Sonos, Inc. Method and system for controlling amplifiers
US8868698B2 (en) 2004-06-05 2014-10-21 Sonos, Inc. Establishing a secure wireless network with minimum human intervention
US8326951B1 (en) 2004-06-05 2012-12-04 Sonos, Inc. Establishing a secure wireless network with minimum human intervention
US7400653B2 (en) * 2004-06-18 2008-07-15 Dolby Laboratories Licensing Corporation Maintaining synchronization of streaming audio and video using internet protocol
JP4270084B2 (ja) 2004-09-14 2009-05-27 株式会社日立製作所 記録再生装置
CN100340115C (zh) * 2004-10-22 2007-09-26 威盛电子股份有限公司 影音资料流中时间轴切换处理装置及其方法
US20060104305A1 (en) * 2004-11-12 2006-05-18 William Yoshida Audio/video streaming system
JP4304615B2 (ja) 2004-11-17 2009-07-29 ソニー株式会社 データ処理装置、データ処理方法及びデータ処理プログラム
GB0428155D0 (en) * 2004-12-22 2005-01-26 British Telecomm Buffer underflow prevention
KR100652956B1 (ko) * 2005-01-14 2006-12-01 삼성전자주식회사 비디오 수신지연 알림방법 및 이를 적용한 방송수신장치
JP4624121B2 (ja) * 2005-01-31 2011-02-02 日本電気株式会社 符号化装置、これで用いるｓｔｃ補正方法、符号化システム、送出系、及び音声送受信システム
KR100658866B1 (ko) * 2005-03-10 2006-12-15 엘지전자 주식회사 비디오 및 오디오 데이터 동기화 장치 및 방법
US8233540B2 (en) * 2005-03-10 2012-07-31 Qualcomm Incorporated Method of time base reconstruction for discrete time labeled video
US20060209210A1 (en) * 2005-03-18 2006-09-21 Ati Technologies Inc. Automatic audio and video synchronization
US7669219B2 (en) * 2005-04-15 2010-02-23 Microsoft Corporation Synchronized media experience
KR100638138B1 (ko) * 2005-05-24 2006-10-24 주식회사 픽스트리 비디오/오디오 부호화 및 다중화 기능을 가진 하드웨어장치 및 그 작동 방법
US20070019931A1 (en) * 2005-07-19 2007-01-25 Texas Instruments Incorporated Systems and methods for re-synchronizing video and audio data
JP4065961B2 (ja) * 2005-10-27 2008-03-26 国立大学法人 千葉大学 映像と音声のずれ時間を、高精度かつ簡便に計測する方法および計測装置
CA2544459A1 (en) * 2006-04-21 2007-10-21 Evertz Microsystems Ltd. Systems and methods for synchronizing audio and video data signals
US8379735B2 (en) * 2006-05-15 2013-02-19 Microsoft Corporation Automatic video glitch detection and audio-video synchronization assessment
US8788080B1 (en) 2006-09-12 2014-07-22 Sonos, Inc. Multi-channel pairing in a media system
US9202509B2 (en) 2006-09-12 2015-12-01 Sonos, Inc. Controlling and grouping in a multi-zone media system
US8483853B1 (en) 2006-09-12 2013-07-09 Sonos, Inc. Controlling and manipulating groupings in a multi-zone media system
JP5186094B2 (ja) * 2006-09-29 2013-04-17 サクサ株式会社 通信端末、マルチメディア再生制御方法、およびプログラム
US8027560B2 (en) * 2007-02-05 2011-09-27 Thales Avionics, Inc. System and method for synchronizing playback of audio and video
US8842971B2 (en) * 2007-07-31 2014-09-23 The Directv Group, Inc. Methods and apparatus to present audio and video at non-native rates
EP2101503A1 (en) * 2008-03-11 2009-09-16 British Telecommunications Public Limited Company Video coding
JP5602138B2 (ja) * 2008-08-21 2014-10-08 ドルビー ラボラトリーズ ライセンシング コーポレイション オ−ディオ及びビデオ署名生成及び検出のための特徴の最適化及び信頼性予測
EP2200319A1 (en) 2008-12-10 2010-06-23 BRITISH TELECOMMUNICATIONS public limited company Multiplexed video streaming
EP2219342A1 (en) 2009-02-12 2010-08-18 BRITISH TELECOMMUNICATIONS public limited company Bandwidth allocation control in multiple video streaming
JP2010211466A (ja) * 2009-03-10 2010-09-24 Canon Inc 画像処理装置および画像処理方法及びプログラム
ATE540529T1 (de) * 2009-11-03 2012-01-15 Tektronix Int Sales Gmbh Verfahren und vorrichtung zum messen der verzögerung innerhalb eines komprimierten digitalen stroms
KR101090356B1 (ko) 2009-12-28 2011-12-13 주식회사 더블유코퍼레이션 오디오 신호 및 비디오 신호의 동기화 오차 보정 방법 및 장치
US8640181B1 (en) * 2010-09-15 2014-01-28 Mlb Advanced Media, L.P. Synchronous and multi-sourced audio and video broadcast
US9191147B1 (en) * 2010-09-16 2015-11-17 Benjamin J. Sheahan Apparatus and method for conversion between analog and digital domains with a time stamp for digital control system and ultra low error rate communications channel
US11265652B2 (en) 2011-01-25 2022-03-01 Sonos, Inc. Playback device pairing
US11429343B2 (en) 2011-01-25 2022-08-30 Sonos, Inc. Stereo playback configuration and control
US8938312B2 (en) 2011-04-18 2015-01-20 Sonos, Inc. Smart line-in processing
WO2012151756A1 (en) 2011-05-12 2012-11-15 Intel Corporation Techniques for synchronization of audio and video
JP5778478B2 (ja) * 2011-05-23 2015-09-16 ルネサスエレクトロニクス株式会社 データ処理システム
US9042556B2 (en) 2011-07-19 2015-05-26 Sonos, Inc Shaping sound responsive to speaker orientation
US9729115B2 (en) 2012-04-27 2017-08-08 Sonos, Inc. Intelligently increasing the sound level of player
TWI513320B (zh) * 2012-06-25 2015-12-11 Hon Hai Prec Ind Co Ltd 視訊會議裝置及其唇形同步的方法
HUP1300436A2 (en) 2012-07-20 2014-02-28 Sumitomo Chemical Co Method for reducing damage by harmful organisms in corn cultivation
RU2522742C2 (ru) * 2012-08-07 2014-07-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Новосибирский государственный технический университет" Измеритель линейных перемещений
US9008330B2 (en) 2012-09-28 2015-04-14 Sonos, Inc. Crossover frequency adjustments for audio speakers
US9244516B2 (en) 2013-09-30 2016-01-26 Sonos, Inc. Media playback system using standby mode in a mesh network
US9226087B2 (en) 2014-02-06 2015-12-29 Sonos, Inc. Audio output balancing during synchronized playback
US9226073B2 (en) 2014-02-06 2015-12-29 Sonos, Inc. Audio output balancing during synchronized playback
US10178281B2 (en) 2014-07-28 2019-01-08 Starkey Laboratories, Inc. System and method for synchronizing audio and video signals for a listening system
JP6586769B2 (ja) * 2015-04-28 2019-10-09 カシオ計算機株式会社 撮像システム、撮像装置、収音装置、撮像方法、収音方法及びプログラム
US10248376B2 (en) 2015-06-11 2019-04-02 Sonos, Inc. Multiple groupings in a playback system
US10303422B1 (en) 2016-01-05 2019-05-28 Sonos, Inc. Multiple-device setup
US10158905B2 (en) * 2016-09-14 2018-12-18 Dts, Inc. Systems and methods for wirelessly transmitting audio synchronously with rendering of video
US10142043B2 (en) * 2016-10-11 2018-11-27 Viavi Solutions Inc. Time differential digital circuit
US10712997B2 (en) 2016-10-17 2020-07-14 Sonos, Inc. Room association based on name
CN107888611B (zh) * 2017-11-29 2020-10-02 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） 通信方法和装置
CN111954064B (zh) * 2020-08-31 2022-11-04 三星电子（中国）研发中心 音视频同步方法和装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4313135B1 (en) * 1980-07-28 1996-01-02 J Carl Cooper Method and apparatus for preserving or restoring audio to video
US4429332A (en) * 1981-05-18 1984-01-31 Eeco Incorporated Television compressed audio
US5202761A (en) * 1984-11-26 1993-04-13 Cooper J Carl Audio synchronization apparatus
US4703355A (en) * 1985-09-16 1987-10-27 Cooper J Carl Audio to video timing equalizer method and apparatus
DE3732111A1 (de) * 1987-09-24 1989-04-06 Bosch Gmbh Robert Verfahren zur laufzeitanpassung von video- und audiosignalen an ein referenzsignal
EP0418396B1 (en) * 1989-03-16 1998-06-03 Fujitsu Limited Video/audio multiplex transmission system
JP2865782B2 (ja) * 1990-03-16 1999-03-08 富士通株式会社 非同期伝送用ｃｏｄｅｃ装置
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
JP3255308B2 (ja) * 1992-12-18 2002-02-12 ソニー株式会社 データ再生装置
US5430485A (en) * 1993-09-30 1995-07-04 Thomson Consumer Electronics, Inc. Audio/video synchronization in a digital transmission system

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EP0648056A3 (en) 1995-12-13
CA2132186A1 (en) 1995-03-31
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