DE68923594T2 - Verfahren und Einrichtung zur Anzeige von verschiedenen Grauwerten auf einem Flüssigkristallbildschirm. - Google Patents

Verfahren und Einrichtung zur Anzeige von verschiedenen Grauwerten auf einem Flüssigkristallbildschirm.

Info

Publication number
DE68923594T2
DE68923594T2 DE68923594T DE68923594T DE68923594T2 DE 68923594 T2 DE68923594 T2 DE 68923594T2 DE 68923594 T DE68923594 T DE 68923594T DE 68923594 T DE68923594 T DE 68923594T DE 68923594 T2 DE68923594 T2 DE 68923594T2
Authority
DE
Germany
Prior art keywords
liquid crystal
crystal screen
displaying various
gray values
various gray
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
DE68923594T
Other languages
English (en)
Other versions
DE68923594D1 (de
Inventor
James H Garrett
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.)
Compaq Computer Corp
Original Assignee
Compaq Computer 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 Compaq Computer Corp filed Critical Compaq Computer Corp
Publication of DE68923594D1 publication Critical patent/DE68923594D1/de
Application granted granted Critical
Publication of DE68923594T2 publication Critical patent/DE68923594T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/12—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by switched stationary formation of lamps, photocells or light relays
    • H04N3/127—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by switched stationary formation of lamps, photocells or light relays using liquid crystals
    • 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
    • G09G3/36—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 using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • 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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
    • 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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
    • G09G3/2022—Display of intermediate tones by time modulation using two or more time intervals using sub-frames
    • G09G3/2025—Display of intermediate tones by time modulation using two or more time intervals using sub-frames the sub-frames having all the same time duration
    • 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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2044—Display of intermediate tones using dithering
    • G09G3/2051—Display of intermediate tones using dithering with use of a spatial dither pattern
DE68923594T 1988-10-14 1989-10-16 Verfahren und Einrichtung zur Anzeige von verschiedenen Grauwerten auf einem Flüssigkristallbildschirm. Expired - Fee Related DE68923594T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/258,269 US5068649A (en) 1988-10-14 1988-10-14 Method and apparatus for displaying different shades of gray on a liquid crystal display

Publications (2)

Publication Number Publication Date
DE68923594D1 DE68923594D1 (de) 1995-08-31
DE68923594T2 true DE68923594T2 (de) 1996-04-04

Family

ID=22979834

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68923594T Expired - Fee Related DE68923594T2 (de) 1988-10-14 1989-10-16 Verfahren und Einrichtung zur Anzeige von verschiedenen Grauwerten auf einem Flüssigkristallbildschirm.

Country Status (6)

Country Link
US (1) US5068649A (de)
EP (1) EP0364307B1 (de)
JP (1) JPH02176718A (de)
KR (1) KR0147296B1 (de)
CA (1) CA1326081C (de)
DE (1) DE68923594T2 (de)

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5185602A (en) * 1989-04-10 1993-02-09 Cirrus Logic, Inc. Method and apparatus for producing perception of high quality grayscale shading on digitally commanded displays
FR2671656B1 (fr) * 1991-01-11 1993-03-26 Commissariat Energie Atomique Procede d'affichage sur un ecran matriciel d'images comportant q niveaux de gris.
JPH06318060A (ja) * 1991-07-31 1994-11-15 Toshiba Corp 表示制御装置
JPH0561432A (ja) * 1991-08-29 1993-03-12 Sharp Corp 液晶ドライバ回路
JPH0772824B2 (ja) * 1991-12-03 1995-08-02 インターナショナル・ビジネス・マシーンズ・コーポレイション 表示システム
US5751265A (en) * 1991-12-24 1998-05-12 Cirrus Logic, Inc. Apparatus and method for producing shaded images on display screens
WO1993013513A1 (en) * 1991-12-24 1993-07-08 Cirrus Logic, Inc. Process for producing shaded images on display screens
US5389948A (en) * 1992-02-14 1995-02-14 Industrial Technology Research Institute Dithering circuit and method
US5714974A (en) * 1992-02-14 1998-02-03 Industrial Technology Research Laboratories Dithering method and circuit using dithering matrix rotation
US5563985A (en) * 1994-01-05 1996-10-08 Xerox Corporation Image processing method to reduce marking material coverage in printing processes
US5774101A (en) * 1994-12-16 1998-06-30 Asahi Glass Company Ltd. Multiple line simultaneous selection method for a simple matrix LCD which uses temporal and spatial modulation to produce gray scale with reduced crosstalk and flicker
US5748164A (en) 1994-12-22 1998-05-05 Displaytech, Inc. Active matrix liquid crystal image generator
US5751264A (en) * 1995-06-27 1998-05-12 Philips Electronics North America Corporation Distributed duty-cycle operation of digital light-modulators
US5959598A (en) 1995-07-20 1999-09-28 The Regents Of The University Of Colorado Pixel buffer circuits for implementing improved methods of displaying grey-scale or color images
US5767828A (en) * 1995-07-20 1998-06-16 The Regents Of The University Of Colorado Method and apparatus for displaying grey-scale or color images from binary images
US5892496A (en) * 1995-12-21 1999-04-06 Advanced Micro Devices, Inc. Method and apparatus for displaying grayscale data on a monochrome graphic display
US5729243A (en) * 1995-12-21 1998-03-17 Philips Electronics North-America Corporation Multi-frame-rate operation of digital light-modulators
US5953074A (en) * 1996-11-18 1999-09-14 Sage, Inc. Video adapter circuit for detection of analog video scanning formats
US6195079B1 (en) 1996-11-18 2001-02-27 Sage, Inc. On-screen user interface for a video adapter circuit
WO1998023094A2 (en) * 1996-11-18 1998-05-28 Sage, Inc. Adapter circuit for a flat panel display monitor
US6094187A (en) * 1996-12-16 2000-07-25 Sharp Kabushiki Kaisha Light modulating devices having grey scale levels using multiple state selection in combination with temporal and/or spatial dithering
US5920298A (en) * 1996-12-19 1999-07-06 Colorado Microdisplay, Inc. Display system having common electrode modulation
US6046716A (en) * 1996-12-19 2000-04-04 Colorado Microdisplay, Inc. Display system having electrode modulation to alter a state of an electro-optic layer
US6078303A (en) * 1996-12-19 2000-06-20 Colorado Microdisplay, Inc. Display system having electrode modulation to alter a state of an electro-optic layer
US6211859B1 (en) 1997-03-10 2001-04-03 Chips & Technologies, Llc Method for reducing pulsing on liquid crystal displays
US6034663A (en) * 1997-03-10 2000-03-07 Chips & Technologies, Llc Method for providing grey scale images to the visible limit on liquid crystal displays
US6081340A (en) * 1997-03-31 2000-06-27 Xerox Corporation Image processing method to reduce marking material coverage with non-linear specifications
US6064359A (en) * 1997-07-09 2000-05-16 Seiko Epson Corporation Frame rate modulation for liquid crystal display (LCD)
US6252578B1 (en) 1997-10-07 2001-06-26 Intel Corporation Method for reducing flicker when displaying processed digital data on video displays having a low refresh rate
US6151001A (en) * 1998-01-30 2000-11-21 Electro Plasma, Inc. Method and apparatus for minimizing false image artifacts in a digitally controlled display monitor
GB9809200D0 (en) * 1998-04-29 1998-07-01 Sharp Kk Light modulating devices
US6310591B1 (en) 1998-08-18 2001-10-30 Texas Instruments Incorporated Spatial-temporal multiplexing for high bit-depth resolution displays
JP2000148102A (ja) * 1998-11-10 2000-05-26 Nec Shizuoka Ltd 階調表示装置および階調表示方法
GB2361345B (en) * 1999-03-16 2002-03-27 Innomind Internat Ltd Display, and device having a display
US7088370B1 (en) 2000-09-28 2006-08-08 Rockwell Automation Technologies, Inc. Raster engine with programmable matrix controlled grayscale dithering
AU2003274495A1 (en) * 2002-11-21 2004-06-15 Koninklijke Philips Electronics N.V. Liquid crystal display device
CN100446073C (zh) * 2003-06-12 2008-12-24 Nxp股份有限公司 节能的无源矩阵显示装置及其驱动方法
US7161728B2 (en) * 2003-12-09 2007-01-09 Idc, Llc Area array modulation and lead reduction in interferometric modulators
US7948457B2 (en) 2005-05-05 2011-05-24 Qualcomm Mems Technologies, Inc. Systems and methods of actuating MEMS display elements
US7777715B2 (en) * 2006-06-29 2010-08-17 Qualcomm Mems Technologies, Inc. Passive circuits for de-multiplexing display inputs
US7403180B1 (en) * 2007-01-29 2008-07-22 Qualcomm Mems Technologies, Inc. Hybrid color synthesis for multistate reflective modulator displays
US7880711B1 (en) * 2007-04-30 2011-02-01 Lockheed Martin Corporation Image stability in liquid crystal displays
US8451298B2 (en) * 2008-02-13 2013-05-28 Qualcomm Mems Technologies, Inc. Multi-level stochastic dithering with noise mitigation via sequential template averaging
WO2010141767A1 (en) 2009-06-05 2010-12-09 Qualcomm Mems Technologies, Inc. System and method for improving the quality of halftone video using an adaptive threshold
US20110166968A1 (en) * 2010-01-06 2011-07-07 Richard Yin-Ching Houng System and method for activating display device feature
CN101800022B (zh) * 2010-03-17 2012-01-11 福州大学 基于子行驱动技术场致发射显示的低灰度增强方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531160A (en) * 1983-05-03 1985-07-23 Itek Corporation Display processor system and method
DE3686428T2 (de) * 1985-03-08 1993-01-14 Ascii Corp Anzeigesteuersystem.
US4827255A (en) * 1985-05-31 1989-05-02 Ascii Corporation Display control system which produces varying patterns to reduce flickering
JPH0827601B2 (ja) * 1986-01-13 1996-03-21 株式会社日立製作所 液晶表示装置、及びその駆動方法

Also Published As

Publication number Publication date
CA1326081C (en) 1994-01-11
EP0364307B1 (de) 1995-07-26
DE68923594D1 (de) 1995-08-31
KR0147296B1 (ko) 1998-09-15
JPH02176718A (ja) 1990-07-09
EP0364307A2 (de) 1990-04-18
US5068649A (en) 1991-11-26
KR900006808A (ko) 1990-05-08
EP0364307A3 (de) 1991-09-04

Similar Documents

Publication Publication Date Title
DE68923594T2 (de) Verfahren und Einrichtung zur Anzeige von verschiedenen Grauwerten auf einem Flüssigkristallbildschirm.
DE69224603T2 (de) Verfahren und Vorrichtung zur wirksamen Anzeige von Fenstern auf einem Rechnerbildschirm
DE69432698D1 (de) Verfahren und Vorrichtung zur Aufnahme von Anmerkungen auf einen Anzeigeschirm ohne Überlappung
DE69637700D1 (de) Verfahren und Vorrichtung zur Anzeige von Text- oder Grafikdaten auf einem Fernsehbildschirm
DE69218370D1 (de) Verfahren und Vorrichtung zur unterschiedlichen Anzeige von Fenstern auf einem Rechnerbildschirm
DE3872010T2 (de) Verfahren zur fluessigkristall-anzeigeeinrichtungssteuerung und ergaenzende aufzeichnungsvorrichtung.
DE69325216T2 (de) Flüssigkristallanzeigevorrichtung, Vorrichtung und Verfahren zum Montieren von Halbleiterelementen und elektronisches Druckgerät
DE68913084D1 (de) Flüssigkristallanzeigeeinheit und Methode zur Anzeige eines Bildes mit einer derartigen Einheit.
DE68924389D1 (de) Verfahren und Einrichtung zur Anzeige einer Vielzahl von graphischen Bildern.
DE69012353T2 (de) Flüssigkristall-Anzeigevorrichtung und Verfahren zu ihrer Ansteuerung.
DE3586069D1 (de) Verfahren und einrichtung zum steuern von informationsbildfenstern auf einem anzeigegeraet.
DE69332555D1 (de) Verfahren und Vorrichtung zur Anzeige von Zeichen
DE69220583D1 (de) Vorrichtung zum Anzeigen von Gebieten auf einem Sichtgerät
DE68917846T3 (de) Verfahren und Gerät für Bilddarstellungen.
DE68924003D1 (de) Methode und Vorrichtung für Bildschirm mit Grauwert-Anzeige.
DE68923683D1 (de) Steuereinrichtung und -verfahren für eine Flüssigkristallanzeigetafel.
DE69628481D1 (de) Vorrichtung zur Verminderung von Signalstörungen für eine Flüssigkristallanzeige
DE69428849T2 (de) Verfahren und Gerät zur Wiedergabe von Objekten auf einem Anzeigegerät mit mehr Realität
DE68911492T2 (de) Verfahren und Einrichtung zur Erhöhung der Geschwindigkeit zum Generieren von Bildern für Rasteranzeige.
DE3853998D1 (de) Verfahren und schaltung zur löschung einer flüssigkeitskristallanzeige.
DE3889316D1 (de) Vorrichtung und Verfahren zur Verteilung von Distanzhaltern einer Flüssigkristall-Anzeige.
DE69013526T2 (de) Verfahren und Vorrichtung zum Treiben kapazitiver Displayeinrichtungen.
DE69317251D1 (de) Verfahren und Einrichtung für eine Flüssigkristallanzeige
DE68907663D1 (de) Verfahren und vorrichtung zur hinterbeleuchtung einer matrix-fluessigkristallanzeige.
DE69518948D1 (de) Ferroelektrische Flüssigkristallanzeigevorrichtung und Ansteuerungsverfahren zur Durchführung einer abgestufften Anzeige

Legal Events

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