Memory circuit with logic functions

Details Memory circuit with logic functions Memory circuit with logic functions

1989-02-22

1992-05-12

Eng, David Y.

Boots, shoes, and leggings

364244, 3642442, G06F 1200, G06F 1300

Patent

active

051134870

ABSTRACT:
In a memory circuit having a memory device operative to read, write and hold data and an operation unit implementing computation between a first datum supplied externally and a second datum read out of the memory device, a selector for selecting one of operational function specification data preset externally and a selector for selecting one of bit write control data present externally are given with select control signals, so that a frame buffer memory operative in a read-modify-write mode can be used commonly.

REFERENCES:
patent: 4237543 (1980-12-01), Nishio et al.
patent: 4435792 (1984-03-01), Bechtolsbeim
patent: 4613852 (1986-09-01), Maruko
patent: 4641282 (1987-02-01), Ounuma
patent: 4672534 (1987-06-01), Kamiya
patent: 4742474 (1988-05-01), Knierim

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