Virtual memory image controller for multi-windowing

Details Virtual memory image controller for multi-windowing Virtual memory image controller for multi-windowing

1986-05-13

1989-03-21

Harkcom, Gary V.

Boots, shoes, and leggings

340747, G06F 314

Patent

active

048150100

ABSTRACT:
A virtual memory image controller for multi-windowing, comprises a bidimensional image memory organized in N elementary blocks, N being an integer, the blocks being of fixed size and rectangular, a random access read/write memory containing a sequence of N pointers, each pointer noting the beginning address of a block in the image memory, a video signal generator delivering a video signal corresponding to the contents of n blocks of the image memory, NSN, for the display on a screen of the image composed of n blocks organized in amatrix, the blocks be ing addressed by the video generator via a table of indirection, an interface for read/write accesses to the image memory, the accesses being made via the indirection table, the controller comprising also a data bus, an address bus, a command bus, and a sequencer.

REFERENCES:
patent: 4407016 (1983-09-01), Bayliss et al.
patent: 4555775 (1985-11-01), Pike
patent: 4558413 (1985-12-01), Schmidt et al.
patent: 4570181 (1986-02-01), Yamamura
patent: 4598384 (1986-07-01), Shaw et al.
patent: 4642790 (1987-02-01), Minshull et al.
patent: 4658351 (1987-04-01), Teng

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