HK1002619A1 - Manuel and automatic ambient light sensitive picture control for a television receiver - Google Patents

Manuel and automatic ambient light sensitive picture control for a television receiver

Info

Publication number
HK1002619A1
HK1002619A1 HK98101595A HK98101595A HK1002619A1 HK 1002619 A1 HK1002619 A1 HK 1002619A1 HK 98101595 A HK98101595 A HK 98101595A HK 98101595 A HK98101595 A HK 98101595A HK 1002619 A1 HK1002619 A1 HK 1002619A1
Authority
HK
Hong Kong
Prior art keywords
manuel
ambient light
television receiver
light sensitive
picture control
Prior art date
Application number
HK98101595A
Other languages
English (en)
Inventor
John William Stoughton
Original Assignee
Rca Thomson 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 Thomson Licensing Corp filed Critical Rca Thomson Licensing Corp
Publication of HK1002619A1 publication Critical patent/HK1002619A1/xx

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)
HK98101595A 1987-04-23 1998-02-28 Manuel and automatic ambient light sensitive picture control for a television receiver HK1002619A1 (en)

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
HK1002619A1 true HK1002619A1 (en) 1998-09-04

Family

ID=21917212

Family Applications (1)

Application Number Title Priority Date Filing Date
HK98101595A HK1002619A1 (en) 1987-04-23 1998-02-28 Manuel and automatic ambient light sensitive picture control for a television receiver

Country Status (9)

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

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
DE3879749T2 (de) 1993-09-23
JPS63284981A (ja) 1988-11-22
EP0289236B1 (en) 1993-03-31
DE3879749D1 (de) 1993-05-06
CN88102409A (zh) 1988-11-09
KR880013391A (ko) 1988-11-30
CN1019254B (zh) 1992-11-25
EP0289236A3 (en) 1989-11-02
ES2056921T3 (es) 1994-10-16
US4769708A (en) 1988-09-06
JPH0628420B2 (ja) 1994-04-13
EP0289236A2 (en) 1988-11-02
KR960003035B1 (ko) 1996-03-02
CA1262491A (en) 1989-10-24

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Legal Events

Date Code Title Description
PF Patent in force
PE Patent expired

Effective date: 20080421