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GB2477415B - Message passing framework for audio/video streaming in a topology of devices - Google Patents

Message passing framework for audio/video streaming in a topology of devices

Info

Publication number
GB2477415B
GB2477415B GB1101392.7A GB201101392A GB2477415B GB 2477415 B GB2477415 B GB 2477415B GB 201101392 A GB201101392 A GB 201101392A GB 2477415 B GB2477415 B GB 2477415B
Authority
GB
United Kingdom
Prior art keywords
topology
audio
devices
resources
path
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
GB1101392.7A
Other versions
GB201101392D0 (en
GB2477415A (en
Inventor
Srikanth Kambhatla
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.)
Intel Corp
Original Assignee
Intel Corp
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
Priority claimed from US12/821,306 external-priority patent/US20110185026A1/en
Application filed by Intel Corp filed Critical Intel Corp
Publication of GB201101392D0 publication Critical patent/GB201101392D0/en
Publication of GB2477415A publication Critical patent/GB2477415A/en
Application granted granted Critical
Publication of GB2477415B publication Critical patent/GB2477415B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/801—Real time traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/72—Admission control; Resource allocation using reservation actions during connection setup
    • H04L47/724—Admission control; Resource allocation using reservation actions during connection setup at intermediate nodes, e.g. resource reservation protocol [RSVP]
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2350/00—Solving problems of bandwidth in display systems
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2352/00—Parallel handling of streams of display data
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/04—Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/10—Use of a protocol of communication by packets in interfaces along the display data pipeline
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/20—Details of the management of multiple sources of image data
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

In a network topology of audio/video data sources 10 (eg. computers, media players), branch devices 12, 14 (eg. repeaters, format converters, stream concentrators) and sinks 16 (eg. monitors, display devices) complying with eg. a DisplayPortTMstandard, path resources are managed via "enumerate" 18, "commit" 24 and "release" 32 messages passed along a control (AUX) channel between the source and intermediate branches which indicate available bandwidth (BW) and number of streams (#). If a device in the topology fails to commit the path resources enumerated in the first message after a link training handshake, its resources are released 30 and the process repeated until the entire topology is trained ("path training"). Acknowledgements and NACKs (fig.6) and ADD and DELETE stream commands (fig. 7) are also employed.
GB1101392.7A 2010-01-28 2011-01-26 Message passing framework for audio/video streaming in a topology of devices Expired - Fee Related GB2477415B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29893610P 2010-01-28 2010-01-28
US12/821,306 US20110185026A1 (en) 2010-01-28 2010-06-23 Message Passing Framework for Audio/Video Streaming in a Topology of Devices

Publications (3)

Publication Number Publication Date
GB201101392D0 GB201101392D0 (en) 2011-03-09
GB2477415A GB2477415A (en) 2011-08-03
GB2477415B true GB2477415B (en) 2012-03-28

Family

ID=43769682

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1101392.7A Expired - Fee Related GB2477415B (en) 2010-01-28 2011-01-26 Message passing framework for audio/video streaming in a topology of devices

Country Status (1)

Country Link
GB (1) GB2477415B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999033229A1 (en) * 1997-12-23 1999-07-01 Mediaone Group, Inc. Rsvp support for upstream traffic
WO2000002337A1 (en) * 1998-07-06 2000-01-13 Sony Corporation Bandwidth reservation
US20090279473A1 (en) * 2008-05-09 2009-11-12 Ding Lu Link training scheme for displayport source repeaters
US20090295679A1 (en) * 2008-05-27 2009-12-03 Eyran Lida Multiple display network supporting hdmi-cec

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999033229A1 (en) * 1997-12-23 1999-07-01 Mediaone Group, Inc. Rsvp support for upstream traffic
WO2000002337A1 (en) * 1998-07-06 2000-01-13 Sony Corporation Bandwidth reservation
US20090279473A1 (en) * 2008-05-09 2009-11-12 Ding Lu Link training scheme for displayport source repeaters
US20090295679A1 (en) * 2008-05-27 2009-12-03 Eyran Lida Multiple display network supporting hdmi-cec

Also Published As

Publication number Publication date
GB201101392D0 (en) 2011-03-09
GB2477415A (en) 2011-08-03

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20250126