EP0870295A4 - Systeme de recouvrement multimedia pour graphiques et video - Google Patents

Systeme de recouvrement multimedia pour graphiques et video

Info

Publication number
EP0870295A4
EP0870295A4 EP95942960A EP95942960A EP0870295A4 EP 0870295 A4 EP0870295 A4 EP 0870295A4 EP 95942960 A EP95942960 A EP 95942960A EP 95942960 A EP95942960 A EP 95942960A EP 0870295 A4 EP0870295 A4 EP 0870295A4
Authority
EP
European Patent Office
Prior art keywords
analog
signal
display device
video
analog signal
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.)
Withdrawn
Application number
EP95942960A
Other languages
German (de)
English (en)
Other versions
EP0870295A1 (fr
Inventor
Sherman T King
Tommy C Lee
Niantsu Wang
Yen-Fah Chu
Scott A Kimura
Guorjuh Hwang
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.)
AuraVision Corp
Original Assignee
AuraVision 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
Priority claimed from US08/354,296 external-priority patent/US5644325A/en
Priority claimed from US08/354,188 external-priority patent/US5621428A/en
Priority claimed from US08/354,187 external-priority patent/US5696527A/en
Priority claimed from US08/354,190 external-priority patent/US5644333A/en
Application filed by AuraVision Corp filed Critical AuraVision Corp
Publication of EP0870295A1 publication Critical patent/EP0870295A1/fr
Publication of EP0870295A4 publication Critical patent/EP0870295A4/fr
Withdrawn legal-status Critical Current

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
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/14—Display of multiple viewports
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G09G5/39—Control of the bit-mapped memory
    • G09G5/395—Arrangements specially adapted for transferring the contents of the bit-mapped memory to the screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/74—Circuits for processing colour signals for obtaining special effects
    • H04N9/75—Chroma key
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/12—Overlay of images, i.e. displayed pixel being the result of switching between the corresponding input pixels

Abstract

Les signaux analogiques RGB générés par une carte VGA (54) classique dans un ordinateur personnel sont appliqués à une première entrée d'un multiplexeur analogique (70). Les données vidéo numériques stockées dans une mémoire tampon (62) vidéo sur une carte vidéo sont converties en signaux analogiques RGB à l'aide d'un convertisseur N/A (66) et ces signaux analogiques sont appliqués à une seconde entrée du multiplexeur analogique (70). Un comparateur analogique (76) compare une clé (78) de couleur présélectionnée à la sortie analogique de la carte VGA (54). Un procédé d'alignement automatique de données vidéo sur une fenêtre vidéo (56) d'un écran d'affichage (58) dans un système multimédia est également décrit.
EP95942960A 1994-12-12 1995-12-12 Systeme de recouvrement multimedia pour graphiques et video Withdrawn EP0870295A4 (fr)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
US354187 1989-05-19
US354188 1994-12-12
US08/354,296 US5644325A (en) 1994-12-12 1994-12-12 Digital to analog converter with improved output level control
US08/354,188 US5621428A (en) 1994-12-12 1994-12-12 Automatic alignment of video window on a multimedia screen
US08/354,187 US5696527A (en) 1994-12-12 1994-12-12 Multimedia overlay system for graphics and video
US354190 1994-12-12
US354296 1994-12-12
US08/354,190 US5644333A (en) 1994-12-12 1994-12-12 Color key detection scheme for multimedia systems
PCT/US1995/015610 WO1996018991A1 (fr) 1994-12-12 1995-12-12 Systeme de recouvrement multimedia pour graphiques et video

Publications (2)

Publication Number Publication Date
EP0870295A1 EP0870295A1 (fr) 1998-10-14
EP0870295A4 true EP0870295A4 (fr) 1998-12-02

Family

ID=27502869

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95942960A Withdrawn EP0870295A4 (fr) 1994-12-12 1995-12-12 Systeme de recouvrement multimedia pour graphiques et video

Country Status (3)

Country Link
EP (1) EP0870295A4 (fr)
AU (1) AU4413396A (fr)
WO (1) WO1996018991A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980042024A (ko) * 1996-11-01 1998-08-17 윌리엄비.켐플러 디지털 텔레비젼을 위한 그래픽 ｏｓｄ 및 모션 비디오 화상을멀티플렉스하고 블랜드하기 위한 시스템
DE10001369A1 (de) 2000-01-14 2001-07-19 Infineon Technologies Ag Verfahren und Schaltungsanordnung zur Grafikdarstellung, insbesondere in einem digitalen Fernsehgerät

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3604849A (en) * 1969-05-28 1971-09-14 Central Dynamics Mix-effects system for television video signals
US4183046A (en) * 1978-08-17 1980-01-08 Interpretation Systems Incorporated Electronic apparatus for converting digital image or graphics data to color video display formats and method therefor
US4811084A (en) * 1984-04-09 1989-03-07 Corporate Communications Consultants, Inc. Video color detector and chroma key device and method
US4947257A (en) * 1988-10-04 1990-08-07 Bell Communications Research, Inc. Raster assembly processor
US5065231A (en) * 1988-09-26 1991-11-12 Apple Computer, Inc. Apparatus and method for merging input RGB and composite video signals to provide both RGB and composite merged video outputs
EP0508626A2 (fr) * 1991-04-12 1992-10-14 Advanced Micro Devices, Inc. Dispositif à tableau de couleurs
EP0593012A2 (fr) * 1992-10-13 1994-04-20 Hitachi, Ltd. Dispositif d'affichage d'images vidéo et méthode de contrôle d'un affichage d'images vidéo

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3582943A (en) * 1968-12-09 1971-06-01 Bell Telephone Labor Inc High-speed digital-to-analog converter
US4803464A (en) * 1984-04-16 1989-02-07 Gould Inc. Analog display circuit including a wideband amplifier circuit for a high resolution raster display system
US4920344A (en) * 1985-03-11 1990-04-24 Ncr Corporation Digitally compensated multiplying digital to analog converter
US5220312A (en) * 1989-09-29 1993-06-15 International Business Machines Corporation Pixel protection mechanism for mixed graphics/video display adaptors
US5463422A (en) * 1993-10-13 1995-10-31 Auravision Corporation Data processing technique for limiting the bandwidth of data to be stored in a buffer
US5469223A (en) * 1993-10-13 1995-11-21 Auravision Corporation Shared line buffer architecture for a video processing circuit
US5398075A (en) * 1993-11-19 1995-03-14 Intel Corporation Analog chroma keying on color data

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3604849A (en) * 1969-05-28 1971-09-14 Central Dynamics Mix-effects system for television video signals
US4183046A (en) * 1978-08-17 1980-01-08 Interpretation Systems Incorporated Electronic apparatus for converting digital image or graphics data to color video display formats and method therefor
US4811084A (en) * 1984-04-09 1989-03-07 Corporate Communications Consultants, Inc. Video color detector and chroma key device and method
US5065231A (en) * 1988-09-26 1991-11-12 Apple Computer, Inc. Apparatus and method for merging input RGB and composite video signals to provide both RGB and composite merged video outputs
US4947257A (en) * 1988-10-04 1990-08-07 Bell Communications Research, Inc. Raster assembly processor
EP0508626A2 (fr) * 1991-04-12 1992-10-14 Advanced Micro Devices, Inc. Dispositif à tableau de couleurs
EP0593012A2 (fr) * 1992-10-13 1994-04-20 Hitachi, Ltd. Dispositif d'affichage d'images vidéo et méthode de contrôle d'un affichage d'images vidéo

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9618991A1 *

Also Published As

Publication number Publication date
AU4413396A (en) 1996-07-03
WO1996018991A1 (fr) 1996-06-20
EP0870295A1 (fr) 1998-10-14

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