ES2085955T3 - Dispositivo de mejora de transicion de señal. - Google Patents

Dispositivo de mejora de transicion de señal.

Info

Publication number
ES2085955T3
ES2085955T3 ES91202095T ES91202095T ES2085955T3 ES 2085955 T3 ES2085955 T3 ES 2085955T3 ES 91202095 T ES91202095 T ES 91202095T ES 91202095 T ES91202095 T ES 91202095T ES 2085955 T3 ES2085955 T3 ES 2085955T3
Authority
ES
Spain
Prior art keywords
delayed
signal
control
proportion
improvement device
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 - Lifetime
Application number
ES91202095T
Other languages
English (en)
Inventor
Laurens Doornhein
Jeroen Maria Kettenis
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.)
Koninklijke Philips NV
Original Assignee
Philips Electronics NV
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 Philips Electronics NV filed Critical Philips Electronics NV
Application granted granted Critical
Publication of ES2085955T3 publication Critical patent/ES2085955T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Processing Of Color Television Signals (AREA)
  • Pulse Circuits (AREA)
  • Networks Using Active Elements (AREA)

Abstract

UN DISPOSITIVO DE MEJORA DEL TRANSITO DE SEÑALES CONSTA DE UN CIRCUITO DE RETARDO (1-13) QUE RECIBE UNA SEÑAL DE ENTRADA (C) Y QUE TIENE UNA SALIDA QUE SUMINISTRA UNA SEÑAL DE SALIDA QUE NO SE RETARDA, SE RETARDA POR UNA PROPORCION CONTROLABLE O SE ADELANTA POR UNA PROPORCION CONTROLABLE CON RESPECTO A LA SEÑAL DE ENTRADA CUANDO ESTA ES RETARDADA POR UNA PROPORCION DETERMINADA (T3), Y UN CIRCUITO DE CONTROL (15, 23) PARA CONTROLAR EL CIRCUITO DE RETARDO (1-13). EL CIRCUITO DE CONTROL (15-23) CALCULA LA SEGUNDA DERIVADA DE LA SEÑAL DE ENTRADA (C) PARA OBTENER UNA SEÑAL DE CONTROL, CUYO SIGNO INDICA SI LA SEÑAL VA A SER NO RETARDADA, RETARDADA O AVANZADA, MIENTRAS LA AMPLITUD DE LA SEÑAL DE CONTROL INDICA LA PROPORCION POR LA CUAL LA SEÑAL DE ENTRADA VA A RETARDARSE O AVANZARSE.
ES91202095T 1990-09-27 1991-08-16 Dispositivo de mejora de transicion de señal. Expired - Lifetime ES2085955T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90202551 1990-09-27

Publications (1)

Publication Number Publication Date
ES2085955T3 true ES2085955T3 (es) 1996-06-16

Family

ID=8205128

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91202095T Expired - Lifetime ES2085955T3 (es) 1990-09-27 1991-08-16 Dispositivo de mejora de transicion de señal.

Country Status (7)

Country Link
US (1) US5196736A (es)
EP (1) EP0478024B1 (es)
JP (1) JP3452591B2 (es)
KR (1) KR100247878B1 (es)
DE (1) DE69116966T2 (es)
ES (1) ES2085955T3 (es)
FI (1) FI913869L (es)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2675455B2 (ja) * 1991-06-28 1997-11-12 三洋電機株式会社 可変遅延装置
US5304854A (en) * 1992-02-03 1994-04-19 Rca Thomson Licensing Corporation Signal transient improvement circuit
DE4214949A1 (de) * 1992-05-06 1993-11-11 Nokia Deutschland Gmbh Anordnung zur zeitlichen Detektion einer Signalflanke eines auf einer Übertragungsleitung übertragenen elektrischen Signals
US5374964A (en) * 1993-08-04 1994-12-20 Matsushita Electric Corporation Of America Circuit and method for controlling abnormally slow transitions in color television signals
JP3557722B2 (ja) * 1995-06-14 2004-08-25 三菱電機株式会社 走査速度変調回路
EP0857395B1 (en) * 1996-08-26 2004-02-11 Koninklijke Philips Electronics N.V. Sharpness control
DE19639572A1 (de) * 1996-09-26 1998-04-02 Philips Patentverwaltung Verfahren und Anordnung zur Farbkantenversteilerung
JP2000312302A (ja) * 1999-02-24 2000-11-07 Canon Inc 輪郭強調装置及び画像形成装置及び画像信号処理方法及び画像形成方法
US6285203B1 (en) 1999-06-14 2001-09-04 Micron Technology, Inc. Test system having alignment member for aligning semiconductor components
US6600517B1 (en) 2000-03-07 2003-07-29 Koninklijke Philips Electronics N.V. System and method for improving the sharpness of a video image
KR20020007411A (ko) * 2000-03-15 2002-01-26 요트.게.아. 롤페즈 피킹 필터를 갖는 비디오 장치
DE10301260B4 (de) * 2003-01-15 2007-01-18 Infineon Technologies Ag Schaltungsanordnung zur Aufbereitung eines Binärsignals und Offset-Kompensationsschaltung mit der Schaltungsanordnung
US7271851B2 (en) * 2003-01-16 2007-09-18 Samsung Electronics Co., Ltd. Adaptive color transient improvement
US7483081B2 (en) * 2005-10-27 2009-01-27 Mediatek Inc. Edge compensated feature detector and method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3752916A (en) * 1971-09-30 1973-08-14 Ellanin Investments Method and apparatus for improving the horizontal sharpness of electronically scanned images
US4030121A (en) * 1975-12-02 1977-06-14 Faroudja Y C Video crispener
JPS6031302B2 (ja) * 1977-12-19 1985-07-22 ソニー株式会社 色信号の周波数特性改善回路
CA1219338A (en) * 1983-07-27 1987-03-17 Rca Corporation Signal processing circuit
US4758891A (en) * 1986-10-20 1988-07-19 North American Philips Consumer Electronics Corp. Method and apparatus for improving the rise and fall time of a video signal
US4777385A (en) * 1987-02-09 1988-10-11 Rca Licensing Corporation Signal transient improvement circuit
JPH01300791A (ja) * 1988-05-30 1989-12-05 Matsushita Electric Ind Co Ltd 色トランジェント改善装置

Also Published As

Publication number Publication date
KR100247878B1 (ko) 2000-03-15
EP0478024B1 (en) 1996-02-07
DE69116966D1 (de) 1996-03-21
US5196736A (en) 1993-03-23
EP0478024A1 (en) 1992-04-01
FI913869A0 (fi) 1991-08-15
JP3452591B2 (ja) 2003-09-29
JPH06343027A (ja) 1994-12-13
DE69116966T2 (de) 1996-09-12
FI913869A7 (fi) 1992-03-28
FI913869L (fi) 1992-03-28

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