Computer graphics processing and selective visual display system – Computer graphic processing system – Interface
Patent
1997-03-31
1999-07-13
Powell, Mark R.
Computer graphics processing and selective visual display system
Computer graphic processing system
Interface
345213, 345502, 345504, 345520, 3952003, 39520038, G06F 1516
Patent
active
059233427
ABSTRACT:
A laptop computer 53 has an LCD display 542 which is used to display images represented by data-reduced video signals supplied to it from a buffer 52 of a video signal processor (50, 51, 52, 56, 57). The processor is connected to the computer 53 via an SCSI interface having a test adaptor 55, a bus 556 and a device controller 56. The computer is not synchronised with the video. It processes a frame of image data to display the frame, and then requests another frame asynchronously with the video sync. The video signal processor (50, 51, 52, 56, 57) responds to the request by disconnecting from the bus (556) processing the next frame, and reconnecting to the bus to provide the frame synchronously with video frame sync F. Thus the computer becomes effectively synchronised to the video.
REFERENCES:
patent: 5027212 (1991-06-01), Marlton et al.
patent: 5191648 (1993-03-01), Ikenoue et al.
patent: 5710895 (1998-01-01), Gerber et al.
patent: 5815165 (1998-09-01), Blixt
Greenwood Jonathan Mark
McGrath Mark John
Frommer William S.
Kovalick Vincent E.
Powell Mark R.
Sony Corporation
Sony United Kingdom Limited
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