GB2492749B - Receiving video data - Google Patents

Receiving video data

Info

Publication number
GB2492749B
GB2492749B GB1111349.5A GB201111349A GB2492749B GB 2492749 B GB2492749 B GB 2492749B GB 201111349 A GB201111349 A GB 201111349A GB 2492749 B GB2492749 B GB 2492749B
Authority
GB
United Kingdom
Prior art keywords
video data
pll
node
source part
receiving video
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.)
Active
Application number
GB1111349.5A
Other versions
GB201111349D0 (en
GB2492749A (en
Inventor
Yacine El Kolli
Brice Le Houerou
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to GB1111349.5A priority Critical patent/GB2492749B/en
Publication of GB201111349D0 publication Critical patent/GB201111349D0/en
Publication of GB2492749A publication Critical patent/GB2492749A/en
Application granted granted Critical
Publication of GB2492749B publication Critical patent/GB2492749B/en
Active 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
    • H04N21/4302—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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked 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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
    • H04N21/43635—HDMI
    • 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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H04N21/43637—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

In a wireless video display system requiring synchronisation between the respective clocks of a RF video send node (102) and a receive node (103), a Phase Locked Loop (PLL) in a source part 206 of the sender node generates HDMI video data in synchronism with a source clock including timestamps (306) from a Vsync sampler 217, and a similar source part in the receiver node uses the same PLL via the timestamp information in the received video data to synchronise a local clock via a RX synchro manager 213, avoiding the need for an additional PLL.
GB1111349.5A 2011-07-04 2011-07-04 Receiving video data Active GB2492749B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1111349.5A GB2492749B (en) 2011-07-04 2011-07-04 Receiving video data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1111349.5A GB2492749B (en) 2011-07-04 2011-07-04 Receiving video data

Publications (3)

Publication Number Publication Date
GB201111349D0 GB201111349D0 (en) 2011-08-17
GB2492749A GB2492749A (en) 2013-01-16
GB2492749B true GB2492749B (en) 2013-11-20

Family

ID=44512026

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1111349.5A Active GB2492749B (en) 2011-07-04 2011-07-04 Receiving video data

Country Status (1)

Country Link
GB (1) GB2492749B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11075971B2 (en) 2019-04-04 2021-07-27 Evertz Microsystems Ltd. Systems and methods for operating a media transmission network
CA3077449A1 (en) 2019-04-04 2020-10-04 Evertz Microsystems Ltd. Systems and methods for determining delay of a plurality of media streams

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2093926A1 (en) * 2008-02-01 2009-08-26 Thomson Licensing Method of receiving and method of sending data over a network
US20100061406A1 (en) * 2007-03-28 2010-03-11 Akihiro Tatsuta Clock synchronization method for use in communication system for transmitting at least one of video data and audio data

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100061406A1 (en) * 2007-03-28 2010-03-11 Akihiro Tatsuta Clock synchronization method for use in communication system for transmitting at least one of video data and audio data
EP2093926A1 (en) * 2008-02-01 2009-08-26 Thomson Licensing Method of receiving and method of sending data over a network

Also Published As

Publication number Publication date
GB201111349D0 (en) 2011-08-17
GB2492749A (en) 2013-01-16

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