High speed method and apparatus for generating animation by mean

Details High speed method and apparatus for generating animation by mean High speed method and apparatus for generating animation by mean

1994-10-13

1996-04-30

Kuntz, Curtis

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345201, G09G 534

Patent

active

055129188

ABSTRACT:
A method and apparatus for quickly copying a first frame region into a second frame region. A video memory array comprising a plurality of video random access memory devices is divided into at least two frame regions. A background image is rendered by a central processing unit into a background frame region within the video memory array. The central processing unit then requests the background image in the background frame region to be copied into a new frame region in the video memory array. A dedicated circuit copies the entire background image in the background frame region into the new frame region. The dedicated circuit operates by using a serial data register within each video random access memory device during the vertical retrace period of a video timing signal. The dedicated circuit performs the background frame copy without requiring any processing resources from the central processing unit.

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patent: 4961071 (1990-10-01), Krooss
patent: 4988985 (1991-01-01), Barkans et al.
patent: 5150312 (1992-09-01), Beitel et al.
"Three-Buffer Display System for Realtime Animation"; Aug. 1987; pp. 1266-1268 IBM Technical Disclosure Bulletin, vol. 30, No. 3!.
"CRT Video Storage Access Method"; Jun. 1986; pp. 392-393 IBM Technical Disclosure Bulletin, vol. 29, No. 1!.

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