GB2437122B - Method and apparatus for measuring audio/video sync delay - Google Patents

Method and apparatus for measuring audio/video sync delay

Info

Publication number
GB2437122B
GB2437122B GB0607214A GB0607214A GB2437122B GB 2437122 B GB2437122 B GB 2437122B GB 0607214 A GB0607214 A GB 0607214A GB 0607214 A GB0607214 A GB 0607214A GB 2437122 B GB2437122 B GB 2437122B
Authority
GB
United Kingdom
Prior art keywords
video sync
sync delay
measuring audio
audio
measuring
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
Application number
GB0607214A
Other versions
GB0607214D0 (en
GB2437122A (en
Inventor
Matthew Alan Bowers
Scott Griffiths
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tektronix International Sales GmbH
Original Assignee
Tektronix International Sales GmbH
VQUAL Ltd
Tektronix Bristol Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tektronix International Sales GmbH, VQUAL Ltd, Tektronix Bristol Ltd filed Critical Tektronix International Sales GmbH
Priority to GB0607214A priority Critical patent/GB2437122B/en
Publication of GB0607214D0 publication Critical patent/GB0607214D0/en
Publication of GB2437122A publication Critical patent/GB2437122A/en
Application granted granted Critical
Publication of GB2437122B publication Critical patent/GB2437122B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H04N21/434—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
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H04N17/004—Diagnosis, testing or measuring for television systems or their details for digital television systems
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/2368—Multiplexing of audio and video streams
GB0607214A 2006-04-10 2006-04-10 Method and apparatus for measuring audio/video sync delay Expired - Fee Related GB2437122B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0607214A GB2437122B (en) 2006-04-10 2006-04-10 Method and apparatus for measuring audio/video sync delay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0607214A GB2437122B (en) 2006-04-10 2006-04-10 Method and apparatus for measuring audio/video sync delay

Publications (3)

Publication Number Publication Date
GB0607214D0 GB0607214D0 (en) 2006-05-17
GB2437122A GB2437122A (en) 2007-10-17
GB2437122B true GB2437122B (en) 2011-01-05

Family

ID=36539691

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0607214A Expired - Fee Related GB2437122B (en) 2006-04-10 2006-04-10 Method and apparatus for measuring audio/video sync delay

Country Status (1)

Country Link
GB (1) GB2437122B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103796006A (en) * 2012-10-30 2014-05-14 中兴通讯股份有限公司 System and method for labial sound synchronization test
EP4203470A1 (en) 2021-12-21 2023-06-28 Rohde & Schwarz GmbH & Co. KG System and method for evaluation of audio-video desynchronization

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2341758A (en) * 1998-07-24 2000-03-22 John Michael Wilson Synchronization of video and audio signals
JP2001298757A (en) * 2000-04-11 2001-10-26 Nippon Hoso Kyokai <Nhk> Video and audio delay time difference measuring device
JP2003259314A (en) * 2002-02-26 2003-09-12 Nippon Hoso Kyokai <Nhk> Video audio synchronization method and system thereof
WO2005004470A1 (en) * 2003-07-01 2005-01-13 Lg Electronics Inc. Method and apparatus for testing lip-sync of digital television receiver
US20050219366A1 (en) * 2004-03-31 2005-10-06 Hollowbush Richard R Digital audio-video differential delay and channel analyzer
US7020894B1 (en) * 1998-07-24 2006-03-28 Leeds Technologies Limited Video and audio synchronization
EP1758387A1 (en) * 2004-05-27 2007-02-28 Yamaha Corporation Amplifier, video signal and audio signal processing time shift correction method, and correction system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2341758A (en) * 1998-07-24 2000-03-22 John Michael Wilson Synchronization of video and audio signals
US7020894B1 (en) * 1998-07-24 2006-03-28 Leeds Technologies Limited Video and audio synchronization
JP2001298757A (en) * 2000-04-11 2001-10-26 Nippon Hoso Kyokai <Nhk> Video and audio delay time difference measuring device
JP2003259314A (en) * 2002-02-26 2003-09-12 Nippon Hoso Kyokai <Nhk> Video audio synchronization method and system thereof
WO2005004470A1 (en) * 2003-07-01 2005-01-13 Lg Electronics Inc. Method and apparatus for testing lip-sync of digital television receiver
US20050219366A1 (en) * 2004-03-31 2005-10-06 Hollowbush Richard R Digital audio-video differential delay and channel analyzer
EP1758387A1 (en) * 2004-05-27 2007-02-28 Yamaha Corporation Amplifier, video signal and audio signal processing time shift correction method, and correction system

Also Published As

Publication number Publication date
GB0607214D0 (en) 2006-05-17
GB2437122A (en) 2007-10-17

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Legal Events

Date Code Title Description
COOA Change in applicant's name or ownership of the application

Owner name: TEKTRONIX INTERNATIONAL SALES GMBH

Free format text: FORMER APPLICANT(S): TEKTRONIX BRISTOL LIMITED

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20190410

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20210812 AND 20210818