Picture processing apparatus including a dual port memory
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United States of America Patent
Stats
-
Dec 26, 1989
Grant Date -
N/A
app pub date -
Sep 1, 1987
filing date -
Apr 25, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention is directed to a picture processing apparatus for painting a picture memory of a CRT display unit or similar apparatus by paint data. In accordance with this picture processing apparatus, a dual-port memory (4) is used as a frame buffer for storing picture information. In order to store paint information in a memory cell array (7), the information is internally transferred from predetermined storage circuit (9) via a data register (8) having a serial input function. The number of times the dual-port memory (4) is accessed from the processor (1) is greatly reduced so that the burden on the processor (1) can be alleviated. It is also possible to shorten the time required for the paint information to be stored in the memory cell array (7).
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Cited Art Landscape
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