Access control apparatus and image processing system

Details Access control apparatus and image processing system Access control apparatus and image processing system

1997-04-16

1999-07-27

Tung, Kee M.

Computer graphics processing and selective visual display system

Computer graphic processing system

Interface

345508, G06F 1316

Patent

active

059298715

ABSTRACT:
An access control apparatus controls access to a frame buffer part including first, second and third memory blocks storing image data. The access control apparatus includes a storage buffer storing a selection value which indicates one of sides A and B each amounting to one frame of image data to be stored in the frame buffer part, and an access control circuit part generating control signals in response to the selection value read from the storage buffer. The control signals specify the first memory block and a first half of the second memory block when the selection value indicates the side A, and specify a second half of the second memory block and the third memory block when the selection value indicates the side B, so that a double buffer structure is formed by the first through third memory blocks.

REFERENCES:
patent: 4912771 (1990-03-01), Komine et al.
patent: 5404448 (1995-04-01), Bowen et al.
patent: 5587726 (1996-12-01), Moffat
patent: 5757364 (1998-05-01), Ozawa et al.

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