EP0793212B1 - Procédé de commande d'un écran de visualisation d'image affichant des demi-teintes, et dispositif de visualisation mettant en oeuvre le procédé - Google Patents

Procédé de commande d'un écran de visualisation d'image affichant des demi-teintes, et dispositif de visualisation mettant en oeuvre le procédé Download PDF

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Publication number
EP0793212B1
EP0793212B1 EP97400389A EP97400389A EP0793212B1 EP 0793212 B1 EP0793212 B1 EP 0793212B1 EP 97400389 A EP97400389 A EP 97400389A EP 97400389 A EP97400389 A EP 97400389A EP 0793212 B1 EP0793212 B1 EP 0793212B1
Authority
EP
European Patent Office
Prior art keywords
cells
state
subperiods
rows
image
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
EP97400389A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0793212A1 (fr
Inventor
Eric Thomson-CSF SCPI Benoit
Philippe Thomson-CSF SCPI Zorzan
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.)
Thales SA
Technicolor SA
Original Assignee
Thomson Multimedia SA
Thomson CSF SA
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 Thomson Multimedia SA, Thomson CSF SA filed Critical Thomson Multimedia SA
Publication of EP0793212A1 publication Critical patent/EP0793212A1/fr
Application granted granted Critical
Publication of EP0793212B1 publication Critical patent/EP0793212B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • G09G2320/0266—Reduction of sub-frame artefacts
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/025—Reduction of instantaneous peaks of current
    • 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
    • G09G3/22—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 using controlled light sources
    • G09G3/28—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/291—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
    • G09G3/294—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes for lighting or sustain discharge
    • 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
    • G09G3/22—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 using controlled light sources
    • G09G3/28—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/297—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels using opposed discharge type panels

Definitions

  • This memory effect is used with alternating signals called maintenance signals, applied to all cells to activate those which are in the "lit” state, that is to say cause in these cells so-called maintenance discharges which produce light, without changing their state “on” or modify the state of those which are in the "off” state.
  • FIG. 4 represents a image formed mainly of a peripheral zone Z1 with low luminance, and a second zone Z2 with high luminance and having a coding constant video.
  • FIG. 4 represents a image formed mainly of a peripheral zone Z1 with low luminance, and a second zone Z2 with high luminance and having a coding constant video.
  • the video coding circuit 11 delivers coded data to a memory circuit 12, which can for example include as many planes memory PM1, PM2, ... PMn that there are sub-periods S1 to Sn. Every sub-period S1 to Sn can thus correspond to a memory plane in which, for each line L1, L4, the addresses of cells C1 to 16 which must be set to the "on" state.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Control Of Gas Discharge Display Tubes (AREA)
EP97400389A 1996-02-27 1997-02-21 Procédé de commande d'un écran de visualisation d'image affichant des demi-teintes, et dispositif de visualisation mettant en oeuvre le procédé Expired - Lifetime EP0793212B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9602393A FR2745410B1 (fr) 1996-02-27 1996-02-27 Procede de commande d'un ecran de visualisation d'image affichant des demi-teintes, et dispositif de visualisation mettant en oeuvre le procede
FR9602393 1996-02-27

Publications (2)

Publication Number Publication Date
EP0793212A1 EP0793212A1 (fr) 1997-09-03
EP0793212B1 true EP0793212B1 (fr) 2000-03-15

Family

ID=9489603

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400389A Expired - Lifetime EP0793212B1 (fr) 1996-02-27 1997-02-21 Procédé de commande d'un écran de visualisation d'image affichant des demi-teintes, et dispositif de visualisation mettant en oeuvre le procédé

Country Status (7)

Country Link
US (1) US6067060A (zh)
EP (1) EP0793212B1 (zh)
JP (1) JPH09237061A (zh)
KR (1) KR970064172A (zh)
CN (1) CN1110941C (zh)
DE (1) DE69701413T2 (zh)
FR (1) FR2745410B1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999049448A2 (en) * 1998-03-23 1999-09-30 Koninklijke Philips Electronics N.V. Display driving
JP4700366B2 (ja) * 2005-02-14 2011-06-15 三洋電機株式会社 オンスクリーン表示回路
EP1768087A1 (en) * 2005-09-22 2007-03-28 Deutsche Thomson-Brandt Gmbh Method and device for recursively encoding luminance values into subfield code words in a display device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2417848A1 (fr) * 1978-02-21 1979-09-14 Thomson Csf Methode d'effacement d'un panneau a plasma et systemes de visualisation par panneau a plasma utilisant cette methode
FR2605444A1 (fr) * 1986-10-17 1988-04-22 Thomson Csf Procede de commande d'un ecran matriciel electrooptique et circuit de commande mettant en oeuvre ce procede
JP2612863B2 (ja) * 1987-08-31 1997-05-21 シャープ株式会社 表示装置の駆動方法
US5233340A (en) * 1989-09-16 1993-08-03 Sharp Kabushiki Kaisha Method of driving a display device
US5302966A (en) * 1992-06-02 1994-04-12 David Sarnoff Research Center, Inc. Active matrix electroluminescent display and method of operation
WO1994009473A1 (en) * 1992-10-15 1994-04-28 Rank Brimar Limited Display device
GB9407116D0 (en) * 1994-04-11 1994-06-01 Secr Defence Ferroelectric liquid crystal display with greyscale
US5751264A (en) * 1995-06-27 1998-05-12 Philips Electronics North America Corporation Distributed duty-cycle operation of digital light-modulators
JP3568644B2 (ja) * 1995-09-01 2004-09-22 シャープ株式会社 液晶表示装置およびその駆動方法
US5729243A (en) * 1995-12-21 1998-03-17 Philips Electronics North-America Corporation Multi-frame-rate operation of digital light-modulators

Also Published As

Publication number Publication date
KR970064172A (ko) 1997-09-12
CN1110941C (zh) 2003-06-04
DE69701413D1 (de) 2000-04-20
US6067060A (en) 2000-05-23
JPH09237061A (ja) 1997-09-09
FR2745410A1 (fr) 1997-08-29
FR2745410B1 (fr) 1998-06-05
CN1180274A (zh) 1998-04-29
DE69701413T2 (de) 2000-09-07
EP0793212A1 (fr) 1997-09-03

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