DE69111624D1 - Schaltung zur Konturenbetonung eines Farbsignals. - Google Patents

Schaltung zur Konturenbetonung eines Farbsignals.

Info

Publication number
DE69111624D1
DE69111624D1 DE69111624T DE69111624T DE69111624D1 DE 69111624 D1 DE69111624 D1 DE 69111624D1 DE 69111624 T DE69111624 T DE 69111624T DE 69111624 T DE69111624 T DE 69111624T DE 69111624 D1 DE69111624 D1 DE 69111624D1
Authority
DE
Germany
Prior art keywords
emphasizing
contours
circuit
color signal
color
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
DE69111624T
Other languages
English (en)
Other versions
DE69111624T2 (de
Inventor
Mitsumo Kawano
Tadashi Terada
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.)
Toshiba Corp
Original Assignee
Toshiba 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
Application filed by Toshiba Corp filed Critical Toshiba Corp
Application granted granted Critical
Publication of DE69111624D1 publication Critical patent/DE69111624D1/de
Publication of DE69111624T2 publication Critical patent/DE69111624T2/de
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
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
    • H04N5/208—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/142—Edging; Contouring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/648—Video amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Picture Signal Circuits (AREA)
DE69111624T 1990-01-19 1991-01-18 Schaltung zur Konturenbetonung eines Farbsignals. Expired - Fee Related DE69111624T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008225A JPH03214885A (ja) 1990-01-19 1990-01-19 色信号の輪郭強調回路

Publications (2)

Publication Number Publication Date
DE69111624D1 true DE69111624D1 (de) 1995-09-07
DE69111624T2 DE69111624T2 (de) 1996-01-18

Family

ID=11687231

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69111624T Expired - Fee Related DE69111624T2 (de) 1990-01-19 1991-01-18 Schaltung zur Konturenbetonung eines Farbsignals.

Country Status (5)

Country Link
US (1) US5191407A (de)
EP (1) EP0439297B1 (de)
JP (1) JPH03214885A (de)
KR (1) KR940009480B1 (de)
DE (1) DE69111624T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5350908A (en) * 1992-06-30 1994-09-27 Allen-Bradley Company, Inc. Automatic gain control circuit having disturbance cancellation capabilities
US5349390A (en) * 1992-09-22 1994-09-20 U.S. Philips Corporation Picture signal processor for performing both large area and small area contrast reduction, and picture display apparatus incorporating such a picture signal processor
US6091301A (en) * 1996-06-03 2000-07-18 Scientific-Atlanta, Inc. Flatness compensation of diplex filter roll-off using active amplifier peaking circuit
DE19639572A1 (de) * 1996-09-26 1998-04-02 Philips Patentverwaltung Verfahren und Anordnung zur Farbkantenversteilerung

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3515804A (en) * 1967-05-15 1970-06-02 Us Air Force Video automatic gain control system for maintaining constant background noise level
DE2326620C3 (de) * 1973-05-25 1979-08-02 Robert Bosch Gmbh, 7000 Stuttgart Schaltungsanordnung zur Erzeugung eines Korrektursignals für die Aperturkorrektur von Videosignalen
US4090217A (en) * 1976-08-23 1978-05-16 Gte Laboratories Incorporated Automatic sharpness control circuit for a television receiver
JPS5380913A (en) * 1976-10-16 1978-07-17 Toshiba Corp Singnal processing circuit
JPS5419323A (en) * 1977-07-13 1979-02-14 Matsushita Electric Ind Co Ltd Automatic gain control system
DE2855880C2 (de) * 1978-12-23 1982-09-16 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung mit einem regelbaren Verstärker
JPS57145484A (en) * 1981-03-05 1982-09-08 Oki Electric Ind Co Ltd Agc system of video signal
US4400721A (en) * 1981-07-13 1983-08-23 Albert Macovski Transition system for color television receivers
DE3223580A1 (de) * 1982-06-24 1983-12-29 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung zum erhoehen der schaerfe von farbkanten
DE3541103C1 (de) * 1985-11-21 1986-12-18 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung zum Erhoehen der Schaerfe von Farbkanten
JPH0236677A (ja) * 1988-07-26 1990-02-06 Sharp Corp Ａｇｃ回路
US4989074A (en) * 1988-09-27 1991-01-29 Matsushita Electric Industrial Co., Ltd. Digital automatic gain control apparatus

Also Published As

Publication number Publication date
DE69111624T2 (de) 1996-01-18
KR910015181A (ko) 1991-08-31
KR940009480B1 (ko) 1994-10-13
EP0439297A1 (de) 1991-07-31
EP0439297B1 (de) 1995-08-02
JPH03214885A (ja) 1991-09-20
US5191407A (en) 1993-03-02

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee