Communications: electrical – Digital comparator systems
Patent
1994-10-07
1995-11-28
Nelms, David C.
Communications: electrical
Digital comparator systems
36518907, 36518911, G06F 702
Patent
active
054711886
ABSTRACT:
A fast comparator circuit, including a plurality of first switches operating in parallel. A first data bit from a first data word is input into a first input of each first switch, and a corresponding second data bit from a second data word is respectively input into a second input of each first switch. Each first switch provides a first logic state output when the first data bit matches the corresponding second data bit or a second logic state output when the first data bit does not match the second data bit. A plurality of second switches receive the respective logic state outputs and produce a combined output, indicating an all match or a mismatch, to a third switch combination connected to a first branch node and a second branch node to create a first voltage difference between the first and second branch nodes when an all match output results and a second voltage difference between the first and second branch node when a mismatch output results. A sense amplifier operates to amplify the voltage differentials that develope due to an imbalance caused in the conductance at the two branch nodes.
REFERENCES:
patent: 4031511 (1977-06-01), Britton
patent: 4464591 (1984-08-01), Rapp
patent: 4539495 (1985-09-01), Demler
patent: 4810910 (1989-03-01), Schoellikopf et al.
patent: 4933905 (1990-06-01), Ootani
patent: 4935719 (1990-06-01), McClure
patent: 4982363 (1991-01-01), Sood
patent: 5023841 (1991-07-01), Akrout et al.
patent: 5027008 (1991-07-01), Runaldue
patent: 5031147 (1991-07-01), Maruyama et al.
patent: 5032744 (1991-07-01), Wai Yeung Liu
patent: 5130692 (1992-07-01), Ando et al.
patent: 5140188 (1992-08-01), Burns
patent: 5281946 (1994-01-01), Van Le
patent: 5412368 (1995-05-01), Gammack et al.
Chappell Barbara A.
Chappell Terry I.
Fleischer Bruce M.
Schuster Stanley E.
International Business Machines - Corporation
Le Vu A.
Nelms David C.
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