Image data processing device with multi-processor

Details Image data processing device with multi-processor Image data processing device with multi-processor

1994-01-27

1995-07-18

Powell, Mark R.

395162, 395164, G06F 1516

Patent

active

054349680

ABSTRACT:
An image data processing device having a multi-processor includes a plurality of local frame buffers, each coupled to a different one of a plurality of processors, and an image mixing device for mixing image data outputted from the local frame buffers periodically and transferring the mixed data to a screen, Each of the local frame buffers includes a demand paging device for assigning a memory unit of predetermined size to only a portion of the screen accessed by one of the plurality of processors to which the local frame buffer is coupled. The demand paging device includes a patch table for storing an assigning situation for the rectangular areas of the screen, Each patch of the patch table corresponds to the rectangular area of the screen, and stores information regarding an access to a portion of the screen by the one of the plurality of processors and address information of a memory unit assigned to the portion of the screen accessed by the one of the plurality of processors.

REFERENCES:
patent: 4737921 (1988-04-01), Goldwasser et al.
patent: 4752894 (1988-06-01), Deering et al.
patent: 4985856 (1991-01-01), Kaufman et al.
patent: 5113180 (1992-05-01), Gupta et al.
Nishimura, Satoshi; Mukai, Ryo; Kunii, Tosiyasu, Back cover page of the paper entitled "A Flexible Parallel Graphics Architecture Based on a Conflict-Free Multiport Frame Buffer", Department of Information Science, University of Tokyo, Hongo, Japan, Mar. 12-14, 1991, previously submitted with Feb. 13, 1992 information disclosure statement.
[Translation] Listing of Lectures, 42nd National Convention, Information Processing Academic Congress, Tokyo Engineering Institute, Mar., 1991.

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