Analog signal manipulation using charge transfer techniques

Details Analog signal manipulation using charge transfer techniques Analog signal manipulation using charge transfer techniques

1977-11-30

1979-06-26

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307221D, 307351, 307353, 3401463AG, H03K 5153, H03K 518

Patent

active

041594320

ABSTRACT:
Analog voltage levels derived from optically scanning a document or from magnetically scanning a magnetic record, depend upon the variable amplitude of a background signal. The analog voltage levels are processed by a bucket brigade circuit to set a threshold from which a binary decision may be made as to the presence of a black or white indicium in optical recognition or a one (1) or zero (0) bit in magnetic reading.

REFERENCES:
patent: 3891977 (1975-06-01), Amelio et al.
patent: 4001501 (1977-01-01), Weimer
patent: 4021682 (1977-05-01), Elmer et al.

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