Image memory

Details Image memory Image memory

1986-04-11

1989-01-17

Moffitt, James W.

Static information storage and retrieval

Read/write circuit

Serial read/write

340800, G11C 700

Patent

active

047991984

ABSTRACT:
A video random access memory (Video RAM) having a plurality of RAM and shift register sets, the RAM being randomly accessed and the shift register being serially accessed, each RAM and shift register being connected by transfer gates in order to transfer read/write data. The Video RAM comprising; an input/output circuit operatively connected to the shift register and switched from an input side to an output side or from an output side to an input side in response to a direction of data transfer between the RAM and the shift register, and a transfer control circuit for controlling the switching of the input/output circuit and the controlling the direction of data transfer based on predetermined modes of the input signals.

REFERENCES:
patent: 3787817 (1974-01-01), Goldberg
patent: 4633441 (1986-12-01), Ishimoto
IEEE, International Solid-State Circuits Conference (ISSCC 85), Digest of Technical Papers, Feb. 13, 1985, pp. 38 and 39.

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