JPH0441762B2 - - Google Patents

Info

Publication number
JPH0441762B2
JPH0441762B2 JP59178376A JP17837684A JPH0441762B2 JP H0441762 B2 JPH0441762 B2 JP H0441762B2 JP 59178376 A JP59178376 A JP 59178376A JP 17837684 A JP17837684 A JP 17837684A JP H0441762 B2 JPH0441762 B2 JP H0441762B2
Authority
JP
Japan
Prior art keywords
color
display
liquid crystal
brightness
fluorescent lamp
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
JP59178376A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6157814A (ja
Inventor
Kozo Katogi
Osamu Igarashi
Keiichi Tokuyama
Hirohisa Yamamura
Seiji Suda
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP59178376A priority Critical patent/JPS6157814A/ja
Priority to KR1019850005448A priority patent/KR930002495B1/ko
Priority to EP85109915A priority patent/EP0174497B1/en
Priority to DE8585109915T priority patent/DE3583195D1/de
Priority to US06/768,321 priority patent/US4752771A/en
Publication of JPS6157814A publication Critical patent/JPS6157814A/ja
Publication of JPH0441762B2 publication Critical patent/JPH0441762B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/28—Structurally-combined illuminating devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/0633—Adjustment of display parameters for control of overall brightness by amplitude modulation of the brightness of the illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/064—Adjustment of display parameters for control of overall brightness by time modulation of the brightness of the illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/0653—Controlling or limiting the speed of brightness adjustment of the illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Indicating Measured Values (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
JP59178376A 1984-08-29 1984-08-29 電子計器盤 Granted JPS6157814A (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP59178376A JPS6157814A (ja) 1984-08-29 1984-08-29 電子計器盤
KR1019850005448A KR930002495B1 (ko) 1984-08-29 1985-07-29 전자계기반
EP85109915A EP0174497B1 (en) 1984-08-29 1985-08-07 Electronic instrument panel
DE8585109915T DE3583195D1 (de) 1984-08-29 1985-08-07 Elektronische instrumentenanzeigevorrichtung.
US06/768,321 US4752771A (en) 1984-08-29 1985-08-22 Electronic instrument panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59178376A JPS6157814A (ja) 1984-08-29 1984-08-29 電子計器盤

Publications (2)

Publication Number Publication Date
JPS6157814A JPS6157814A (ja) 1986-03-24
JPH0441762B2 true JPH0441762B2 (en]) 1992-07-09

Family

ID=16047405

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59178376A Granted JPS6157814A (ja) 1984-08-29 1984-08-29 電子計器盤

Country Status (5)

Country Link
US (1) US4752771A (en])
EP (1) EP0174497B1 (en])
JP (1) JPS6157814A (en])
KR (1) KR930002495B1 (en])
DE (1) DE3583195D1 (en])

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61174593A (ja) * 1985-01-29 1986-08-06 日本精機株式会社 液晶表示装置
US5122733A (en) * 1986-01-15 1992-06-16 Karel Havel Variable color digital multimeter
DE3627134A1 (de) * 1986-08-09 1988-02-11 Philips Patentverwaltung Verfahren und schaltungsanordnung zur helligkeits- und temperaturabhaenigen steuerung einer lampe, insbesondere zur beleuchtung einer lcd-anzeige
EP0261896B1 (en) * 1986-09-20 1993-05-12 THORN EMI plc Display device
JPH0774944B2 (ja) * 1986-10-30 1995-08-09 パイオニア株式会社 車載ナビゲ−シヨン装置における表示装置
JPH039320A (ja) * 1989-06-06 1991-01-17 Asahi Optical Co Ltd 液晶表示装置
US5416496A (en) * 1989-08-22 1995-05-16 Wood; Lawson A. Ferroelectric liquid crystal display apparatus and method
DE4140647C2 (de) * 1991-12-10 1996-09-12 Bosch Gmbh Robert Anzeigevorrichtung mit Lichtsensor
US5402143A (en) * 1991-12-23 1995-03-28 Panocorp Display Systems Color fluorescent liquid crystal display
SG44027A1 (en) * 1992-03-31 1997-11-14 Minnesota Mining & Mfg Color caliberation for lcd panel
US6195000B1 (en) * 1993-02-19 2001-02-27 Jack V. Smith Emergency auto visual communication system
US5617112A (en) * 1993-12-28 1997-04-01 Nec Corporation Display control device for controlling brightness of a display installed in a vehicular cabin
WO1997001240A1 (en) * 1995-06-20 1997-01-09 Thomson Consumer Electronics, Inc. Back lit electronic viewfinder
JP3159919B2 (ja) * 1995-08-01 2001-04-23 キヤノン株式会社 カラーフィルタの製造装置及び製造方法及び着色むらの低減方法
DE19531458A1 (de) * 1995-08-26 1997-02-27 Telefunken Microelectron Verfahren zum Betrieb einer Leuchtstofflampe
US5696483A (en) * 1995-09-29 1997-12-09 Ford Motor Company Illuminating indicating apparatus
DE19942598A1 (de) * 1999-09-07 2001-03-08 Mannesmann Vdo Ag Vorrichtung zum Anzeigen eines Meßwertes
US6762742B2 (en) * 2000-12-29 2004-07-13 Samsung Electronics Co., Ltd. Apparatus and method for automatic brightness control for use in liquid crystal display device
US6958700B2 (en) * 2001-08-22 2005-10-25 Nohmi Bosai Ltd. Fire receiver
GB0227632D0 (en) * 2002-11-27 2003-01-08 Koninkl Philips Electronics Nv Active matrix display
DE102004003534A1 (de) * 2004-01-23 2005-08-04 Siemens Ag Vorrichtung zum Abstrahlen von Licht geschwindigkeitsabhängiger Farbtönung für ein Fahrzeug
GB0413121D0 (en) * 2004-06-11 2004-07-14 Pelikon Ltd Improved displays
US8698979B2 (en) * 2004-06-11 2014-04-15 Mflex Uk Limited Electroluminescent displays
JP4878869B2 (ja) * 2005-04-08 2012-02-15 日東電工株式会社 発泡部材、発泡部材積層体及び発泡部材が用いられた電気・電子機器類
JP2008286832A (ja) * 2007-05-15 2008-11-27 Funai Electric Co Ltd 液晶表示装置及び液晶テレビジョン
KR101392925B1 (ko) 2007-10-23 2014-05-09 엘지전자 주식회사 이동 단말기 및 그의 백라이트 조명 제어 장치
TWI401666B (zh) * 2008-02-19 2013-07-11 Hannstar Display Corp 對比度提昇方法
CN101625835B (zh) * 2008-07-08 2012-10-31 瀚宇彩晶股份有限公司 对比度提升方法
GB2473639A (en) * 2009-09-18 2011-03-23 Litelogic Ip Ltd Display with multiple PCBs mounted to bus-bars
TWI428891B (zh) * 2009-12-04 2014-03-01 Htc Corp 電子裝置及其控制背光亮度之方法
US8884939B2 (en) 2010-07-26 2014-11-11 Apple Inc. Display brightness control based on ambient light levels
EP2413310B1 (en) * 2010-07-26 2017-08-23 Apple Inc. Display Brightness Control Temporal Response

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL40825A (en) * 1972-11-13 1977-03-31 Stolov M Digital display device
US3849979A (en) * 1973-07-24 1974-11-26 Ise Electronics Corp Electronic digital clocks
US3893081A (en) * 1974-04-05 1975-07-01 Charles L Hopkins Audio actuated lamp
JPS531546A (en) * 1976-06-28 1978-01-09 Nippon Denso Co Ltd Display for car
US4114366A (en) * 1976-08-02 1978-09-19 Texas Instruments Incorporated Digital brightness control system
JPS54148496A (en) * 1978-05-15 1979-11-20 Seiko Epson Corp Color liquid crystal display unit
IL55032A (en) * 1978-06-29 1984-05-31 Stolov Michael Color picture display system including electronically controlled slides
GB2042238B (en) * 1979-02-14 1982-12-08 Matsushita Electric Ind Co Ltd Drive circuit for a liquid crystal display panel
US4470666A (en) * 1979-06-18 1984-09-11 General Motors Corporation Colored liquid crystal display
US4254408A (en) * 1979-12-03 1981-03-03 General Motors Corporation Case for luminous display with ambient light conduit assembly
US4487481A (en) * 1980-03-24 1984-12-11 Epson Corporation Backlighted liquid crystal display
JPS5857172A (ja) * 1981-09-30 1983-04-05 三菱電機株式会社 液晶表示器
US4438453A (en) * 1982-01-21 1984-03-20 Polaroid Corporation Constant light greyscale generator for CRT color camera system
JPS5961818A (ja) * 1982-10-01 1984-04-09 Seiko Epson Corp 液晶表示装置
GB2142180B (en) * 1983-06-24 1986-12-17 Standard Telephones Cables Ltd Liquid crystal display cell

Also Published As

Publication number Publication date
JPS6157814A (ja) 1986-03-24
EP0174497B1 (en) 1991-06-12
EP0174497A2 (en) 1986-03-19
US4752771A (en) 1988-06-21
DE3583195D1 (de) 1991-07-18
KR870001457A (ko) 1987-03-13
EP0174497A3 (en) 1987-08-05
KR930002495B1 (ko) 1993-04-02

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