Static information storage and retrieval – Read/write circuit – Having particular data buffer or latch
Patent
1983-05-31
1985-12-10
Popek, Joseph A.
Static information storage and retrieval
Read/write circuit
Having particular data buffer or latch
365230, G11C 700
Patent
active
045584338
ABSTRACT:
The present invention is especially directed towards an improved means for comparing the address inputs of word decoders in a memory array such that, when a compare occurs, selected ones of the array word decoders are disabled to prevent a multiple read, and selected higher order read heads are inhibited while switching the output data onto all of the output lines having the same address as the uninhibited word decoder. The comparator circuit employs a ripple effect and comprises a plurality of exclusive-OR circuits interposed with a source follower circuit. The first and last steps of the comparator is an exclusive-OR circuit. The comparator circuit is extendable to any size system and result in better power performance as well as a smaller size.
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IBM TDB, vol. 19, #12, May 1977, p. 4673, "In-Phase Weak-Signal Input Circuit", by R. D. Love.
IBM TDB, vol. 19, #3, Aug. 1976, pp. 998-999, "True, Push-Pull Driver", by S. B. Hsu.
Electronics, Jun. 30, 1981, "Dynamic Depletion Circuits Upgrade MOS Performance", pp. 128-129.
International Business Machines - Corporation
Popek Joseph A.
Thornton Francis J.
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