Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1992-02-21
1994-02-08
Ip, Paul
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
365145, 36518901, 36518908, 365226, G11C 700, G11C 1134
Patent
active
052852920
ABSTRACT:
A dynamic random access memory device selectively enters a flush write-in mode of operation, and has a plurality of controlling circuits respectively associated with a plurality of sense amplifier circuit groups which in turn are provided in association with a plurality of memory cell sub-arrays, wherein the plurality of controlling circuits produce activation signals respectively assigned the plurality of sense amplifier circuit groups in such a manner that time delay is introduced between activation of the sense amplifier circuits supplied with flush write data bits and activation of the sense amplifier circuits with refreshing data bits read out from non-selected memory cell groups, thereby preventing refresh data bits from undesirable data destruction without sacrifice of write-in speed.
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patent: 5010518 (1991-04-01), Toda
patent: 5036494 (1991-07-01), Wise et al.
patent: 5208774 (1993-05-01), Shibue
patent: 5222044 (1993-06-01), Tsujimoto
Ip Paul
NEC Corporation
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