Image processing apparatus

Details Image processing apparatus Image processing apparatus

1993-05-25

1995-01-24

Brier, Jeffery

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

348717, G09G 504, H04N 964

Patent

active

053845811

ABSTRACT:
There is disclosed a control circuit of a memory device of a random access type for storing first data and second data whose reading/writing cycle time is longer than that of the first data, including: a memory circuit for reading/writing a predetermined number of first data into/from each memory block which is obtained by dividing the memory device into at least two or more memory blocks, for reading/writing the second data into/from the other memory blocks, and for supplying address signals for the reading/writing cycle period of time of the second data; and a memory switching circuit for switching and using the memory blocks in order to read/write the first and second data, so that the memory device can be accessed at a high speed by using a small capacity.

REFERENCES:
patent: 4206457 (1980-06-01), Weisbecker et al.
patent: 4628467 (1986-12-01), Nishi et al.
patent: 4689660 (1987-08-01), Kashigi
patent: 4772938 (1988-09-01), Sasson
patent: 4910505 (1990-03-01), Beaver et al.

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