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WO1995001628A1 - Dispositif d'affichage par adressage actif en temps reel et procede d'utilisation du circuit rapide de la transformee de walsh - Google Patents

Dispositif d'affichage par adressage actif en temps reel et procede d'utilisation du circuit rapide de la transformee de walsh Download PDF

Info

Publication number
WO1995001628A1
WO1995001628A1 PCT/US1994/006621 US9406621W WO9501628A1 WO 1995001628 A1 WO1995001628 A1 WO 1995001628A1 US 9406621 W US9406621 W US 9406621W WO 9501628 A1 WO9501628 A1 WO 9501628A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
unit
fwt
matrix
operably coupled
Prior art date
Application number
PCT/US1994/006621
Other languages
English (en)
Inventor
Arlie R. Conner
Benjamin Robert Clifton
John K. Grosspietsch
Original Assignee
Motorola, Inc.
In Focus Systems, Inc.
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 Motorola, Inc., In Focus Systems, Inc. filed Critical Motorola, Inc.
Priority to AU71722/94A priority Critical patent/AU676928B2/en
Priority to JP7503519A priority patent/JPH09504617A/ja
Publication of WO1995001628A1 publication Critical patent/WO1995001628A1/fr

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
    • G09G3/34—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
    • G09G3/3622—Control of matrices with row and column drivers using a passive matrix
    • G09G3/3625—Control of matrices with row and column drivers using a passive matrix using active addressing
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/66—Transforming electric information into light information
    • H04N5/70—Circuit details for electroluminescent devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/907—Television signal recording using static stores, e.g. storage tubes or semiconductor memories

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal (AREA)

Abstract

L'invention concerne un dispositif et un procédé générant des signaux de commande d'adressage actif destinés à un affichage à cristaux liquides grâce à une mise en oeuvre efficace des fonctions de Walsh. Par la mise en oeuvre d'une technique visant à déterminer les transformations rapides de Walsh, on obtient l'adressage actif en temps réel de signaux de commande en déterminant des adresses de mémoire à accès sélectif (RAM) pour envoyer des parties présélectionnées de données d'images numériques (PPDIDs) à une pluralité de mémoires RAM (106, 108, 110), et en commandant simultanément l'entrée/sortie parallèle de données vers/à partir des mémoires RAM et un circuit de la transformée rapide de WALSH (FWTC 102) de sorte que les transformées rapides de Walsh (FWTs) soient effectuées sur des données d'images numériques d'entrée. Par exemple, des signaux de commande à adressage actif pour une moitié de l'affichage à cristaux liquides en colonne de dimension 240 par 640 peuvent être déterminés en temps réel. Par conséquent, deux des dispositifs de la présente invention peuvent être utilisés pour produire un système d'adressage actif en temps réel s'appliquant à un affichage à cristaux liquides caractéristique à réseau graphique visuel (VGA).
PCT/US1994/006621 1993-06-30 1994-06-13 Dispositif d'affichage par adressage actif en temps reel et procede d'utilisation du circuit rapide de la transformee de walsh WO1995001628A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU71722/94A AU676928B2 (en) 1993-06-30 1994-06-13 Real time active addressing display device and method utilizing fast walsh transform circuit
JP7503519A JPH09504617A (ja) 1993-06-30 1994-06-13 高速ウォルシュ変換回路を使用した実時間アクティブアドレシング表示装置および方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US8522893A 1993-06-30 1993-06-30
US08/085,228 1993-06-30

Publications (1)

Publication Number Publication Date
WO1995001628A1 true WO1995001628A1 (fr) 1995-01-12

Family

ID=22190282

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/006621 WO1995001628A1 (fr) 1993-06-30 1994-06-13 Dispositif d'affichage par adressage actif en temps reel et procede d'utilisation du circuit rapide de la transformee de walsh

Country Status (4)

Country Link
JP (1) JPH09504617A (fr)
AU (1) AU676928B2 (fr)
CA (1) CA2164982A1 (fr)
WO (1) WO1995001628A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5739803A (en) * 1994-01-24 1998-04-14 Arithmos, Inc. Electronic system for driving liquid crystal displays
US5877738A (en) * 1992-03-05 1999-03-02 Seiko Epson Corporation Liquid crystal element drive method, drive circuit, and display apparatus
US5900856A (en) * 1992-03-05 1999-05-04 Seiko Epson Corporation Matrix display apparatus, matrix display control apparatus, and matrix display drive apparatus
US5959603A (en) * 1992-05-08 1999-09-28 Seiko Epson Corporation Liquid crystal element drive method, drive circuit, and display apparatus
US5963189A (en) * 1992-03-05 1999-10-05 Seiko Epson Corporation Drive method, a drive circuit and a display device for liquid crystal cells
US6252572B1 (en) 1994-11-17 2001-06-26 Seiko Epson Corporation Display device, display device drive method, and electronic instrument

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001794A (en) * 1977-07-26 1979-02-07 Secr Defence Waveform display
EP0507061A2 (fr) * 1991-04-01 1992-10-07 In Focus Systems, Inc. Système d'adressage pour un dispositif d'affichage à cristaux liquides

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001794A (en) * 1977-07-26 1979-02-07 Secr Defence Waveform display
EP0507061A2 (fr) * 1991-04-01 1992-10-07 In Focus Systems, Inc. Système d'adressage pour un dispositif d'affichage à cristaux liquides

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOCIETY FOR INFORMATION DISPLAY INTERNATION SYMPOSIUM DIGEST OF TECHNICAL PAPERS, Volume XXIII, May 1992 (Boston, Massachusetts), T.J. SCHEFFER, "Active Addressing Method For High-Contrast Video-Rate STN Displays", pages 228-231. *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6421040B2 (en) 1992-03-05 2002-07-16 Seiko Epson Corporation Drive method, a drive circuit and a display device for liquid crystal cells
US6452578B1 (en) 1992-03-05 2002-09-17 Seiko Epson Corporation Liquid crystal element drive method, drive circuit, and display apparatus
US5900856A (en) * 1992-03-05 1999-05-04 Seiko Epson Corporation Matrix display apparatus, matrix display control apparatus, and matrix display drive apparatus
US7138972B2 (en) 1992-03-05 2006-11-21 Seiko Epson Corporation Liquid crystal element drive method, drive circuit, and display apparatus
US5963189A (en) * 1992-03-05 1999-10-05 Seiko Epson Corporation Drive method, a drive circuit and a display device for liquid crystal cells
US6084563A (en) * 1992-03-05 2000-07-04 Seiko Epson Corporation Drive method, a drive circuit and a display device for liquid crystal cells
US5877738A (en) * 1992-03-05 1999-03-02 Seiko Epson Corporation Liquid crystal element drive method, drive circuit, and display apparatus
US7095397B2 (en) 1992-03-05 2006-08-22 Seiko Epson Corporation Drive method, a drive circuit and a display device for liquid crystal cells
US6208323B1 (en) 1992-03-05 2001-03-27 Seiko Epson Corporation Drive method, a drive circuit and a display device for liquid crystal cells
US6611246B1 (en) 1992-03-05 2003-08-26 Seiko Epson Corporation Liquid crystal element drive method, drive circuit, and display apparatus
US6252573B1 (en) 1992-03-05 2001-06-26 Seiko Epson Corporation Drive method, a drive circuit and a display device for liquid crystal cells
US6483497B1 (en) 1992-03-05 2002-11-19 Seiko Epson Corporation Matrix display with signal electrode drive having memory
US5959603A (en) * 1992-05-08 1999-09-28 Seiko Epson Corporation Liquid crystal element drive method, drive circuit, and display apparatus
US5739803A (en) * 1994-01-24 1998-04-14 Arithmos, Inc. Electronic system for driving liquid crystal displays
US6252572B1 (en) 1994-11-17 2001-06-26 Seiko Epson Corporation Display device, display device drive method, and electronic instrument

Also Published As

Publication number Publication date
CA2164982A1 (fr) 1995-01-12
AU7172294A (en) 1995-01-24
JPH09504617A (ja) 1997-05-06
AU676928B2 (en) 1997-03-27

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