MX9606433A - Un metodo y aparato para generar señales de sincronizacion de velocidad variable. - Google Patents

Un metodo y aparato para generar señales de sincronizacion de velocidad variable.

Info

Publication number
MX9606433A
MX9606433A MX9606433A MX9606433A MX9606433A MX 9606433 A MX9606433 A MX 9606433A MX 9606433 A MX9606433 A MX 9606433A MX 9606433 A MX9606433 A MX 9606433A MX 9606433 A MX9606433 A MX 9606433A
Authority
MX
Mexico
Prior art keywords
synchronization signals
variable rate
generating variable
rate synchronization
programmable
Prior art date
Application number
MX9606433A
Other languages
English (en)
Other versions
MXPA96006433A (es
Inventor
Barth Alan Canfield
Harold Blatter
Original Assignee
Thomson Consumer Electronics
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 Thomson Consumer Electronics filed Critical Thomson Consumer Electronics
Publication of MX9606433A publication Critical patent/MX9606433A/es
Publication of MXPA96006433A publication Critical patent/MXPA96006433A/es

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]
    • H04N21/20—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
    • H04N21/242—Synchronization processes, e.g. processing of PCR [Program Clock References]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/06—Generation of synchronising signals
    • 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
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • 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
    • H04N21/43—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Synchronizing For Television (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Dc Digital Transmission (AREA)

Abstract

Un sistema de sincronizacion programable para proporcionar selectivamente señales de sincronizacion a distintas velocidades, tal como para la incorporacion en un sistema de descompresion de señal de video, incluye un oscilador (401) y un contador programable (405). El contador programable se acondiciona para contar impulsos del oscilador mediante modulos alternos en secuencias previamente determinadas para generar las señales de sincronizacion. La velocidad de sincronizacion deseada es efectivamente el promedio de la salida del contador que resulta de contar mediante los modulos alternos.
MXPA/A/1996/006433A 1995-12-12 1996-12-13 Un metodo y aparato para generar señales de sincronizacion de velocidad variable MXPA96006433A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/571,040 US6310922B1 (en) 1995-12-12 1995-12-12 Method and apparatus for generating variable rate synchronization signals
US08571040 1995-12-12

Publications (2)

Publication Number Publication Date
MX9606433A true MX9606433A (es) 1997-10-31
MXPA96006433A MXPA96006433A (es) 1998-07-03

Family

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Also Published As

Publication number Publication date
CN1440188A (zh) 2003-09-03
DE69636429D1 (de) 2006-09-21
CA2189812C (en) 2004-06-08
US6310922B1 (en) 2001-10-30
KR970057940A (ko) 1997-07-31
CN1155211A (zh) 1997-07-23
CA2425870C (en) 2004-03-30
KR100600428B1 (ko) 2006-07-13
CA2425870A1 (en) 1997-06-13
CN1106108C (zh) 2003-04-16
CA2189812A1 (en) 1997-06-13
KR100474789B1 (ko) 2005-06-22
EP0779741B1 (en) 2006-08-09
DE69636429T2 (de) 2007-02-01
MY120680A (en) 2005-11-30
EP0779741A3 (en) 1999-02-24
EP0779741A2 (en) 1997-06-18
CN1191708C (zh) 2005-03-02
JP3924031B2 (ja) 2007-06-06
JPH09238130A (ja) 1997-09-09

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Legal Events

Date Code Title Description
FG Grant or registration
MM Annulment or lapse due to non-payment of fees