EP1677277A3 - Procédé de commande d'un écran de visualisation matriciel - Google Patents

Procédé de commande d'un écran de visualisation matriciel Download PDF

Info

Publication number
EP1677277A3
EP1677277A3 EP05113010A EP05113010A EP1677277A3 EP 1677277 A3 EP1677277 A3 EP 1677277A3 EP 05113010 A EP05113010 A EP 05113010A EP 05113010 A EP05113010 A EP 05113010A EP 1677277 A3 EP1677277 A3 EP 1677277A3
Authority
EP
European Patent Office
Prior art keywords
voltages
pair
group
time
line selection
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.)
Granted
Application number
EP05113010A
Other languages
German (de)
English (en)
Other versions
EP1677277B1 (fr
EP1677277A2 (fr
Inventor
Denis Sarrasin
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of EP1677277A2 publication Critical patent/EP1677277A2/fr
Publication of EP1677277A3 publication Critical patent/EP1677277A3/fr
Application granted granted Critical
Publication of EP1677277B1 publication Critical patent/EP1677277B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • G09G3/22—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
    • 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
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
    • 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
    • G09G3/2077—Display of intermediate tones by a combination of two or more gradation control methods
    • G09G3/2081—Display of intermediate tones by a combination of two or more gradation control methods with combination of amplitude modulation and time modulation

Landscapes

  • 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)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Picture Signal Circuits (AREA)

Abstract

Il s'agit d'un procédé de commande d'un écran de visualisation matriciel. On applique à une ligne une tension de sélection de ligne pendant un temps de sélection de ligne et simultanément à une colonne une tension correspondant à un niveau de gris à afficher qui est choisi parmi 2q niveaux et numériquement codé suivant une loi non linéaire conforme à la perception de l'oeil. Les tensions à appliquer aux colonnes sont choisies dans une suite croissante de (2n +1) tensions réparties en couples qui permettent d'afficher une plage de niveaux de gris. Le temps de sélection de ligne est subdivisé en un ou plusieurs groupes égaux de 2(q-n) intervalles de temps avec (q-n) entier >1, la répartition de ces 2(q-n) intervalles de temps dans un groupe se faisant, pour un couple de tensions, suivant une loi non linéaire présentant une fonction de transfert proche de l'inverse de celle ayant préalablement servi à coder les niveaux de gris pour la plage de niveau de gris correspondante, la tension appliquée à une colonne, pour un couple de tensions et un groupe d'intervalles de temps, soit prenant l'une des valeurs du couple de tensions pendant toute la durée du groupe, soit commutant au moins une fois, au cours de la durée du groupe, en fin d'un intervalle de temps, d'une valeur à l'autre du couple de tensions.
EP05113010A 2004-12-28 2005-12-27 Procédé de commande d'un écran de visualisation matriciel Not-in-force EP1677277B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0413978A FR2880173B1 (fr) 2004-12-28 2004-12-28 Procede de commande d'un ecran de visualisation matriciel

Publications (3)

Publication Number Publication Date
EP1677277A2 EP1677277A2 (fr) 2006-07-05
EP1677277A3 true EP1677277A3 (fr) 2009-05-13
EP1677277B1 EP1677277B1 (fr) 2010-06-02

Family

ID=34952944

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05113010A Not-in-force EP1677277B1 (fr) 2004-12-28 2005-12-27 Procédé de commande d'un écran de visualisation matriciel

Country Status (6)

Country Link
US (1) US7710363B2 (fr)
EP (1) EP1677277B1 (fr)
JP (1) JP2006189841A (fr)
AT (1) ATE470212T1 (fr)
DE (1) DE602005021603D1 (fr)
FR (1) FR2880173B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2899991B1 (fr) * 2006-04-14 2009-03-20 Commissariat Energie Atomique Procede de commande d'un dispositif de visualisation matriciel a source d'electrons
FR2907959B1 (fr) * 2006-10-30 2009-02-13 Commissariat Energie Atomique Procede de commande d'un dispositif de visualisation matriciel a source d'electrons a consommation capacitive reduite

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5555000A (en) * 1993-07-22 1996-09-10 Commissariat A L'energie Atomique Process and device for the control of a microtip fluorescent display
US6215466B1 (en) * 1991-10-08 2001-04-10 Semiconductor Energy Laboratory Co., Ltd. Method of driving an electro-optical device
WO2004059606A2 (fr) * 2002-12-30 2004-07-15 Koninklijke Philips Electronics N.V. Ecran avec adressage d'une ligne a la fois et procede de commande
US20040165004A1 (en) * 2002-12-27 2004-08-26 Canon Kabushiki Kaisha Image display apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2633764B1 (fr) 1988-06-29 1991-02-15 Commissariat Energie Atomique Procede et dispositif de commande d'un ecran matriciel affichant des niveaux de gris
CA2138363C (fr) * 1993-12-22 1999-06-22 Yasuyuki Todokoro Dispositif generateur de faisceau electronique, dispositif d'affichage d'images et methode d'attaque de ces dispositifs
FR2786597B1 (fr) * 1998-11-27 2001-02-09 Pixtech Sa Adressage numerique d'un ecran plat de visualisation
JP3967510B2 (ja) * 1999-12-28 2007-08-29 富士フイルム株式会社 ディジタルカメラ
JP3854100B2 (ja) * 2000-06-22 2006-12-06 オリンパス株式会社 撮像装置
JP2002311885A (ja) * 2001-04-13 2002-10-25 Canon Inc 画像表示装置の駆動回路、画像表示装置、画像表示装置の駆動方法
FR2832537B1 (fr) * 2001-11-16 2003-12-19 Commissariat Energie Atomique Procede et dispositif de commande en tension d'une source d'electrons a structure matricielle, avec regulation de la charge emise
JP2005136872A (ja) * 2003-10-31 2005-05-26 Toshiba Corp 表示装置と表示方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6215466B1 (en) * 1991-10-08 2001-04-10 Semiconductor Energy Laboratory Co., Ltd. Method of driving an electro-optical device
US5555000A (en) * 1993-07-22 1996-09-10 Commissariat A L'energie Atomique Process and device for the control of a microtip fluorescent display
US20040165004A1 (en) * 2002-12-27 2004-08-26 Canon Kabushiki Kaisha Image display apparatus
WO2004059606A2 (fr) * 2002-12-30 2004-07-15 Koninklijke Philips Electronics N.V. Ecran avec adressage d'une ligne a la fois et procede de commande

Also Published As

Publication number Publication date
FR2880173B1 (fr) 2007-05-11
DE602005021603D1 (de) 2010-07-15
US20060139250A1 (en) 2006-06-29
FR2880173A1 (fr) 2006-06-30
ATE470212T1 (de) 2010-06-15
EP1677277B1 (fr) 2010-06-02
JP2006189841A (ja) 2006-07-20
US7710363B2 (en) 2010-05-04
EP1677277A2 (fr) 2006-07-05

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