High-speed parity check circuit

Details High-speed parity check circuit High-speed parity check circuit

1984-12-26

1987-02-24

Smith, Jerry

Excavating

307471, 307530, G06F 1110

Patent

active

046463062

ABSTRACT:
A high speed parity circuit uses a sequence of simplified exclusive-OR circuits responsive to data input terminals containing a data signal and its complement and terminating in a sense amplifier, together with an operating sequence in which the inputs to the sequence are grounded while the data lines are first brought high and then set to the correct data state to form a pair of separate paths through the sequence when no current flows, after which set-up operation an input voltage circuit raises the voltage on one of the paths smoothly, so that the sense amplifier can respond as soon as its input is large enough, without waiting for a settling time.

REFERENCES:
patent: 3560765 (1971-02-01), Kubinec
patent: 4049974 (1977-09-01), Boone
patent: 4208730 (1980-06-01), Dingwall
patent: 4250410 (1981-02-01), Moench
patent: 4450371 (1984-05-01), Bismarck
patent: 4450562 (1984-05-01), Wacyk
patent: 4477904 (1984-10-01), Thorsrud

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