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 PDFInfo
- 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
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
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).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
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 |
AU71722/94A AU676928B2 (en) | 1993-06-30 | 1994-06-13 | Real time active addressing display device and method utilizing fast walsh transform circuit |
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)
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)
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 |
-
1994
- 1994-06-13 WO PCT/US1994/006621 patent/WO1995001628A1/fr active Application Filing
- 1994-06-13 JP JP7503519A patent/JPH09504617A/ja active Pending
- 1994-06-13 AU AU71722/94A patent/AU676928B2/en not_active Ceased
- 1994-06-13 CA CA 2164982 patent/CA2164982A1/fr not_active Abandoned
Patent Citations (2)
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)
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)
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 |
---|---|
AU676928B2 (en) | 1997-03-27 |
CA2164982A1 (fr) | 1995-01-12 |
AU7172294A (en) | 1995-01-24 |
JPH09504617A (ja) | 1997-05-06 |
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