Charge coupled device differencer

Details Charge coupled device differencer Charge coupled device differencer

1985-12-03

1987-08-11

Harkcom, Gary V.

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364807, 357 24, 377 63, G06G 700

Patent

active

046866485

ABSTRACT:
A charge packet differencer is implemented in a charge coupled device in such a manner that a first charge packet may be subtracted from a second charge packet thus giving a resultant charge packet equal to the difference between the first and second charge packets. The charge coupled device differencer comprises a semiconductor substrate in which there is formed first and second charge transfer devices, first and second charge substraction mechanisms, and a charge reservoir cooperating to produce a charge packet output representative of the difference between two input charge packets using a gate charge subtraction technique.

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patent: 4195273 (1980-03-01), Prince
patent: 4239983 (1980-12-01), Edwards et al.
patent: 4476568 (1984-10-01), Prince
patent: 4509181 (1985-04-01), Sauer
patent: 4573177 (1986-02-01), Petrosky
patent: 4627084 (1986-12-01), McIver

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