Comparator having variable width comparisons

Details Comparator having variable width comparisons Comparator having variable width comparisons

1989-05-01

1990-06-12

Malzahn, David H.

Communications: electrical

Digital comparator systems

G06F 704

Patent

active

049336622

ABSTRACT:
A method of comparing two binary quantities, which includes comparing corresponding bits of each of the binary quantities and generating comparison signals to indicate equality and inequality of corresponding bits of the quantities. The comparison signals are transferred to a transfer line with the signals being arranged in order on the transfer line from the signal corresponding to the most significant bits to that corresponding to the least significant bits. A selected number of the comparison signals are coupled in order of priority from that corresponding to the most significant bits to that corresponding to the least significant bits, to an output EQUALS line in response to a plurality of decode signals.

REFERENCES:
patent: 3434109 (1969-03-01), Coote
patent: 3938087 (1976-02-01), Louie
patent: 3962680 (1976-06-01), Hirao
patent: 4012714 (1977-03-01), Lohmann
patent: 4450432 (1984-05-01), Schmidtpott
patent: 4752763 (1988-06-01), Hoffman
McCarthy, "Digital Comparison Within a Tolerance", IBM Tech. Disclosure Bulletin, vol. 13, No. 10, Mar. '71, pp. 2975-2977.

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