WO2008030551A3 - Automatic video format identification system - Google Patents

Automatic video format identification system Download PDF

Info

Publication number
WO2008030551A3
WO2008030551A3 PCT/US2007/019514 US2007019514W WO2008030551A3 WO 2008030551 A3 WO2008030551 A3 WO 2008030551A3 US 2007019514 W US2007019514 W US 2007019514W WO 2008030551 A3 WO2008030551 A3 WO 2008030551A3
Authority
WO
WIPO (PCT)
Prior art keywords
format
signals
burst
color burst
synchronization
Prior art date
Application number
PCT/US2007/019514
Other languages
French (fr)
Other versions
WO2008030551A2 (en
Inventor
Raymond William Hall
Original Assignee
Rgb Systems Inc
Raymond William Hall
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 Rgb Systems Inc, Raymond William Hall filed Critical Rgb Systems Inc
Publication of WO2008030551A2 publication Critical patent/WO2008030551A2/en
Publication of WO2008030551A3 publication Critical patent/WO2008030551A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0102—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving the resampling of the incoming video signal

Abstract

A video format identification system includes a master clock circuit which provides timing and counting signals, a synchronization activity detector operatively coupled to the master clock circuit, and a synchronization width qualifier configured to filter out noise or reference burst signals from showing up as sync signals. The system also includes a synchronization detector which regulates the rat of the incoming sync signal, a color burst sampler providing a window for sampling a reference color burst after the sync signal has occurred, and a color burst detector which looks for at least three transitions from a burst signal before it qualifies the as an appropriat reference color burst. A format sample timer generates sample clock signals. A format sample counter produces 'take format' signal which are utilized by a set of format counter. The system further includes a video format identifier.
PCT/US2007/019514 2006-09-06 2007-09-06 Automatic video format identification system WO2008030551A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US84279106P 2006-09-06 2006-09-06
US60/842,791 2006-09-06
US11/850,671 2007-09-05
US11/850,671 US7796194B2 (en) 2006-09-06 2007-09-05 Automatic video format identification system

Publications (2)

Publication Number Publication Date
WO2008030551A2 WO2008030551A2 (en) 2008-03-13
WO2008030551A3 true WO2008030551A3 (en) 2008-06-19

Family

ID=39157857

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/019514 WO2008030551A2 (en) 2006-09-06 2007-09-06 Automatic video format identification system

Country Status (2)

Country Link
US (2) US7796194B2 (en)
WO (1) WO2008030551A2 (en)

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US8325236B2 (en) * 2006-03-03 2012-12-04 Sharp Laboratories Of America, Inc. Methods and systems for cable-connection detection
US8330550B2 (en) * 2006-06-23 2012-12-11 Rgb Systems, Inc. Method and apparatus for automatic compensation of video signal losses from transmission over conductors
US7796194B2 (en) * 2006-09-06 2010-09-14 Rgb Systems, Inc. Automatic video format identification system
TWI319959B (en) * 2006-11-29 2010-01-21 Image transmission interface
US8059208B2 (en) * 2008-09-26 2011-11-15 Pelco, Inc. Line tapping method of video amplification for unshielded twisted pair active receiver
US8457312B2 (en) * 2008-11-18 2013-06-04 Aten International Co., Ltd. Cable length detection and signal compensation apparatus and method for a keyboard video mouse switch and extender
JP5318704B2 (en) * 2009-08-20 2013-10-16 富士通コンポーネント株式会社 Signal transmission system
US8681977B2 (en) 2011-12-13 2014-03-25 Crestron Electronics Inc. Enabling/disabling display data channel access to enable/ disable high-bandwidth digital content protection
US8713316B2 (en) 2011-12-13 2014-04-29 Crestron Electronics Inc. System, apparatus and method for enabling/disabling display data channel access to enable/disable high-bandwidth digital content protection
US9456236B2 (en) 2013-02-11 2016-09-27 Crestron Electronics Inc. Systems, devices and methods for reducing switching time in a video distribution network
US9516362B2 (en) 2012-02-10 2016-12-06 Crestron Electronics Inc. Devices, systems and methods for reducing switching time in a video distribution network
CN104052953B (en) * 2014-06-16 2017-04-12 苏州佳世达电通有限公司 Display and control method thereof
CN109932995B (en) * 2017-12-18 2021-06-15 鸿富锦精密电子(天津)有限公司 Electronic device
US10623692B2 (en) 2018-07-13 2020-04-14 Analog Devices Global Unlimited Company High definition analog video and control link for automotive applications
US10855951B2 (en) 2018-07-13 2020-12-01 Analog Devices Global Unlimited Company Methods and devices for compensating sag effect
US10462413B1 (en) * 2018-10-26 2019-10-29 Analog Devices Global Unlimited Company Using metadata for DC offset correction for an AC-coupled video link
JP2021190868A (en) * 2020-05-29 2021-12-13 キヤノン株式会社 Video synchronization apparatus, control method of the video synchronization apparatus, and program

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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0483467A2 (en) * 1990-10-31 1992-05-06 Geryon Communication, Inc. Color graphics conversion device particularly for converting video signals output by graphics stations into television signals
US20020140818A1 (en) * 2001-04-02 2002-10-03 Pelco System and method for generating raster video test patterns
US20050185093A1 (en) * 2003-12-03 2005-08-25 Seiko Epson Corporation Video signal identification device and video signal identification method
US20050134736A1 (en) * 2003-12-17 2005-06-23 Meiners Jason W. Method for identifying format of a received video signal

Also Published As

Publication number Publication date
WO2008030551A2 (en) 2008-03-13
US20080068501A1 (en) 2008-03-20
US20110063507A1 (en) 2011-03-17
US7796194B2 (en) 2010-09-14

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