ES2056921T3 - Control de imagen sensible a la luz ambiental, manual y automatico, para un receptor de television. - Google Patents

Control de imagen sensible a la luz ambiental, manual y automatico, para un receptor de television.

Info

Publication number
ES2056921T3
ES2056921T3 ES88303671T ES88303671T ES2056921T3 ES 2056921 T3 ES2056921 T3 ES 2056921T3 ES 88303671 T ES88303671 T ES 88303671T ES 88303671 T ES88303671 T ES 88303671T ES 2056921 T3 ES2056921 T3 ES 2056921T3
Authority
ES
Spain
Prior art keywords
manual
television receiver
control
automatic
light sensitive
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
ES88303671T
Other languages
English (en)
Inventor
John William Stoughton
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.)
RCA Licensing Corp
Original Assignee
RCA Licensing 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 RCA Licensing Corp filed Critical RCA Licensing Corp
Application granted granted Critical
Publication of ES2056921T3 publication Critical patent/ES2056921T3/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
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness
    • H04N5/58—Control of contrast or brightness in dependence upon ambient light

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Picture Signal Circuits (AREA)

Abstract

UN RECEPTOR DE TELEVISION, UNA SEÑAL DE CONTROL DE CONTRASTE PARA CONTROLAR LA AMPLITUD DE UNA SEÑAL DE VIDEO ES FUNCION DE UNA PIEZA MANUAL DE CONTROL DE CONTRASTE (20) Y DE UNA PIEZA DE CONTROL DE CONTRASTE AUTOMATICO PROPORCIONADA POR UN CIRCUITO SENSIBLE A LA LUZ (50) QUE REACCIONA A LAS CONDICIONES AMBIENTALES DE LUZ. UN LIMITADOR "BLANDO" (80) LIMITA EL VALOR DE LA SEÑAL DE CONTROL PARA IMPEDIR QUE LA IMAGEN SE EXTINGA DEBIDO A UNA ATENUACION DE LA IMAGEN DE LA SEÑAL VIDEO COMO RESPUESTA A LA SEÑAL DE CONTROL. LA PIEZA DE CONTROL MANUAL INCLUYE UN DISPOSITIVO DE CONTROL DE CICLO DE TRABAJO, COMO PUEDEN SER UN MULTIPLICADOR BINARIO (24) O UN MODULADOR DE AMPLITUD DE IMPULSO.
ES88303671T 1987-04-23 1988-04-22 Control de imagen sensible a la luz ambiental, manual y automatico, para un receptor de television. Expired - Lifetime ES2056921T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/041,568 US4769708A (en) 1987-04-23 1987-04-23 Manual and automatic ambient light sensitive picture control for a television receiver

Publications (1)

Publication Number Publication Date
ES2056921T3 true ES2056921T3 (es) 1994-10-16

Family

ID=21917212

Family Applications (1)

Application Number Title Priority Date Filing Date
ES88303671T Expired - Lifetime ES2056921T3 (es) 1987-04-23 1988-04-22 Control de imagen sensible a la luz ambiental, manual y automatico, para un receptor de television.

Country Status (9)

Country Link
US (1) US4769708A (es)
EP (1) EP0289236B1 (es)
JP (1) JPH0628420B2 (es)
KR (1) KR960003035B1 (es)
CN (1) CN1019254B (es)
CA (1) CA1262491A (es)
DE (1) DE3879749T2 (es)
ES (1) ES2056921T3 (es)
HK (1) HK1002619A1 (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2640839B1 (fr) * 1988-12-20 1991-03-15 Portenseigne Radiotechnique Appareil de reproduction d'image video muni d'un reglage de contraste, et procede de reglage du contraste d'un tel appareil de reproduction
US5760843A (en) * 1993-01-19 1998-06-02 Matsushita Electric Industrial Co., Ltd. Method and apparatus for contrast processing a video signal including brightness level compensation
AU5856194A (en) * 1993-02-05 1994-08-29 Barath, Ludwig Environment-dependent automatic luminance control for display scrreens
US6327708B1 (en) 1998-09-15 2001-12-04 True Image, L.L.C. System of absolute measurement for radiological image luminance control
RU2159514C1 (ru) * 1999-09-02 2000-11-20 Немцова Светлана Рафаиловна Способ формирования внешней подсветки при просмотре электронного изображения
US6639574B2 (en) 2002-01-09 2003-10-28 Landmark Screens Llc Light-emitting diode display
AU2003206429A1 (en) * 2002-07-02 2004-01-22 John Christiansen System
TWI428906B (zh) * 2009-09-30 2014-03-01 Toshiba Global Commerce Solutions Holdings Corp 自動調整光學觸摸面板裝置之亮度的方法及其裝置
CN102595084A (zh) * 2011-01-06 2012-07-18 瑞成奈米股份有限公司 影像自动增益调整方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961281A (en) * 1975-05-23 1976-06-01 Rca Corporation Digital control system
JPS6057283B2 (ja) * 1978-05-19 1985-12-14 東武鉄道株式会社 列車速度照査装置
US4511921A (en) * 1982-06-16 1985-04-16 Rca Corporation Television receiver with manual and selectively disabled automatic picture control
US4451849A (en) * 1982-06-23 1984-05-29 Rca Corporation Plural operating mode ambient light responsive television picture control
JPS6057283U (ja) * 1983-09-26 1985-04-22 ソニー株式会社 カラ−テレビジヨン受像機
US4589022A (en) * 1983-11-28 1986-05-13 General Electric Company Brightness control system for CRT video display

Also Published As

Publication number Publication date
JPS63284981A (ja) 1988-11-22
CN1019254B (zh) 1992-11-25
JPH0628420B2 (ja) 1994-04-13
HK1002619A1 (en) 1998-09-04
EP0289236A2 (en) 1988-11-02
KR960003035B1 (ko) 1996-03-02
DE3879749T2 (de) 1993-09-23
EP0289236A3 (en) 1989-11-02
EP0289236B1 (en) 1993-03-31
DE3879749D1 (de) 1993-05-06
KR880013391A (ko) 1988-11-30
US4769708A (en) 1988-09-06
CN88102409A (zh) 1988-11-09
CA1262491A (en) 1989-10-24

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