EP 0549717 A4 19950118 - HIGH SPEED COLOR DISPLAY PROJECTION SYSTEM AND METHOD OF USING SAME
Title (en)
HIGH SPEED COLOR DISPLAY PROJECTION SYSTEM AND METHOD OF USING SAME
Publication
Application
Priority
- US 58650690 A 19900921
- US 61617890 A 19901119
- US 69053191 A 19910423
Abstract (en)
[origin: WO9205537A1] A high speed color display system (10) including a modulation circuit (11) electrically coupled between a high speed display device (16), such as an active matrix liquid crystal display panel, and a video output signal source (26, 14A) such as a video output card of a personal computer. The modulation circuit (11) including both a scaling circuit (35A) for eliminating or substantially reducing contouring caused by quantizing errors associated with approximations of digital pictures and a duty cycle scaling circuit (42A) for eliminating or substantially reducing repetitive beats in a displayed image. The display panel (16) is adapted for positioning on a conventional photographic projector for displaying large video images. Such a system (10) is modular and employs relatively inexpensive subassembly units such as a user selected television signal generating type device, such as a video cassette recorder (20), and a high speed display device, such as an active matrix display panel (16) adapted for positioning on a projector.
IPC 1-7
IPC 8 full level
G09G 5/00 (2006.01); G09G 5/02 (2006.01); G09G 5/04 (2006.01); H04N 5/66 (2006.01)
CPC (source: EP)
G09G 5/02 (2013.01); G09G 2300/023 (2013.01); G09G 2320/0247 (2013.01); G09G 2320/0276 (2013.01)
Citation (search report)
- [A] EP 0193728 A2 19860910 - ASCII CORP [JP], et al
- [A] EP 0387033 A2 19900912 - SHARP KK [JP]
- [A] WO 8607650 A1 19861231 - MUNDKUR KIRAN R, et al
- See references of WO 9205537A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 9205537 A1 19920402; AU 8758891 A 19920415; EP 0549717 A1 19930707; EP 0549717 A4 19950118; JP H06501322 A 19940210
DOCDB simple family (application)
US 9106761 W 19910918; AU 8758891 A 19910918; EP 91918571 A 19910918; JP 51788891 A 19910918