发明名称 |
Method and apparatus for clearing the memory of a video computer |
摘要 |
In a video computer system and the like having a bit-mapped RAM component including a shift register, an improved method is provided for rapidly clearing the RAM in order to prepare the system to receive new input data. More particularly, a preselected number of predetermined data bits corresponding to the number of columns in the RAM is serially shifted into the register. Thereafter, the contents of the shift register are progressively shifted into each of the rows in the RAM until all rows are filled.
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申请公布号 |
US4720819(A) |
申请公布日期 |
1988.01.19 |
申请号 |
US19830567038 |
申请日期 |
1983.12.30 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
PINKHAM, RAYMOND;GUTTAG, KARL M. |
分类号 |
G09G5/393;G11C7/20;H04N5/907;(IPC1-7):G11C13/00 |
主分类号 |
G09G5/393 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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