CA2035794A1 - Apparatus for carrying out y/c separation - Google Patents

Apparatus for carrying out y/c separation

Info

Publication number
CA2035794A1
CA2035794A1 CA2035794A CA2035794A CA2035794A1 CA 2035794 A1 CA2035794 A1 CA 2035794A1 CA 2035794 A CA2035794 A CA 2035794A CA 2035794 A CA2035794 A CA 2035794A CA 2035794 A1 CA2035794 A1 CA 2035794A1
Authority
CA
Canada
Prior art keywords
video signal
separation
carrying
composite color
vertical retrace
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.)
Granted
Application number
CA2035794A
Other languages
French (fr)
Other versions
CA2035794C (en
Inventor
Shigemitsu Yamade
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.)
Panasonic Holdings Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2035794A1 publication Critical patent/CA2035794A1/en
Application granted granted Critical
Publication of CA2035794C publication Critical patent/CA2035794C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
    • H04N9/78—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
    • H04N7/0882—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of character code signals, e.g. for teletext

Abstract

ABSTRACT OF THE DISCLOSURE

An apparatus for carrying out the Y/C
separation of a composite color video signal used in a television receiver, a video cassette recorder and other and for carrying out the Y/C separation of various signals superposed on the video signal in the vertical retrace interval thereof, without distorting the various signals is disclosed in which apparatus a switching operation is preformed so that the composite color video signal itself is used as a luminance signal in the teletext period of the vertical retrace interval of the composite color video signal, and a Y/C separator of the non-correlation type is switched to operate in the remaining period of the vertical retrace interval.
CA002035794A 1990-02-16 1991-02-06 Apparatus for carrying out y/c separation Expired - Fee Related CA2035794C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2036544A JPH0785589B2 (en) 1990-02-16 1990-02-16 Y / C separator
JP02-036544 1990-02-16

Publications (2)

Publication Number Publication Date
CA2035794A1 true CA2035794A1 (en) 1991-08-17
CA2035794C CA2035794C (en) 1995-01-17

Family

ID=12472714

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002035794A Expired - Fee Related CA2035794C (en) 1990-02-16 1991-02-06 Apparatus for carrying out y/c separation

Country Status (6)

Country Link
US (1) US5103297A (en)
EP (1) EP0442478B1 (en)
JP (1) JPH0785589B2 (en)
KR (1) KR940009481B1 (en)
CA (1) CA2035794C (en)
DE (1) DE69127484T2 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5831679A (en) * 1991-06-14 1998-11-03 Wavephore, Inc. Network for retrieval and video transmission of information
US5410360A (en) * 1991-06-14 1995-04-25 Wavephore, Inc. Timing control for injecting a burst and data into a video signal
US5617148A (en) * 1991-06-14 1997-04-01 Wavephore, Inc. Filter by-pass for transmitting an additional signal with a video signal
US5387941A (en) * 1991-06-14 1995-02-07 Wavephore, Inc. Data with video transmitter
US5327237A (en) * 1991-06-14 1994-07-05 Wavephore, Inc. Transmitting data with video
US5559559A (en) * 1991-06-14 1996-09-24 Wavephore, Inc. Transmitting a secondary signal with dynamic injection level control
JP2959413B2 (en) * 1994-09-29 1999-10-06 日本ビクター株式会社 Dubbing device
US5896179A (en) * 1995-03-31 1999-04-20 Cirrus Logic, Inc. System for displaying computer generated images on a television set
GB2307122A (en) * 1995-11-09 1997-05-14 Thomson Multimedia Sa Video switch with reduced crosstalk
US6002447A (en) * 1996-03-07 1999-12-14 Thomson Consumer Electronics, Inc. Video signal processing apparatus
WO1998014013A1 (en) * 1996-09-27 1998-04-02 Thomson Consumer Electronics, Inc. Comb filter with bypass mode
JP4350809B2 (en) * 1997-03-24 2009-10-21 富士フイルム株式会社 Digital camera
JP2006128860A (en) * 2004-10-27 2006-05-18 Oki Electric Ind Co Ltd Video signal generation circuit
TWI248767B (en) * 2004-11-19 2006-02-01 Realtek Semiconductor Corp Method and apparatus for Y/C separation
TWI338516B (en) * 2006-09-21 2011-03-01 Realtek Semiconductor Corp Video processing system and related video processing method
TWI372554B (en) * 2007-07-26 2012-09-11 Realtek Semiconductor Corp Motion detecting method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS604396A (en) * 1983-06-22 1985-01-10 Canon Inc Video signal processing circuit
JPS60226292A (en) * 1984-04-24 1985-11-11 Mitsubishi Electric Corp Filter for separating luminance signal from chrominance signal
JPH0810945B2 (en) * 1987-07-27 1996-01-31 日本ビクター株式会社 Comb filter circuit
CA1322241C (en) * 1988-07-22 1993-09-14 Hisafumi Motoe Moving detection circuit
JPH0271693A (en) * 1988-09-06 1990-03-12 Sony Corp Luminance/chrominance separation circuit
JPH0271692A (en) * 1988-09-07 1990-03-12 Matsushita Electric Ind Co Ltd Separation circuit for luminance signal and chrominance signal of video signal
JPH0793733B2 (en) * 1989-06-30 1995-10-09 三洋電機株式会社 Luminance signal processing circuit
JPH1030388A (en) * 1996-07-17 1998-02-03 Sanwa Shutter Corp Send-out lower limit adjustment mechanism of shutter curtain

Also Published As

Publication number Publication date
KR910016208A (en) 1991-09-30
EP0442478A3 (en) 1993-06-02
EP0442478A2 (en) 1991-08-21
US5103297A (en) 1992-04-07
JPH03239087A (en) 1991-10-24
DE69127484D1 (en) 1997-10-09
CA2035794C (en) 1995-01-17
KR940009481B1 (en) 1994-10-13
JPH0785589B2 (en) 1995-09-13
DE69127484T2 (en) 1998-03-12
EP0442478B1 (en) 1997-09-03

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed