Binary circuit and image pick-up apparatus including such binary

Details Binary circuit and image pick-up apparatus including such binary Binary circuit and image pick-up apparatus including such binary

1994-05-31

1995-09-26

Hajec, Donald

Registers

Coded record sensors

Particular sensor structure

235472, G06K 710

Patent

active

054536049

ABSTRACT:
Binary information of input signal obtained from positions separated spatially or in point of time, e.g., image pick-up signals from an image sensor can be obtained with high accuracy by a simple circuit configuration. A circuit therefor can be implemented as on-chip configuration within the image sensor. A first comparator set so that a potential on the + terminal is caused to be higher than a potential on the - terminal by voltage V1, a second comparator set so that a potential on the + terminal is caused to be lower than a potential on - terminal by voltage V2, and a JK flip-flop circuit are arranged. One of two signal output sections having quantities of delays different from each other of the final stage in charge transfer section is connected to respective + terminals of the two comparators, the other signal output section is connected to respective - terminals of the two comparators, inverting Q terminal of the first comparator and J terminal of JK flip-flop circuit are connected, and Q terminal of the second comparator and K terminal of JK flip-flop circuit are connected. Thus, binary circuit suitable for, e.g., binarization of output information of an image sensor of a CCD image pick-up apparatus for a bar code reader is provided.

REFERENCES:
patent: 3892949 (1975-07-01), Dodson, III
patent: 4740675 (1988-04-01), Brosman et al.
patent: 4801788 (1989-01-01), Osaka
patent: 5061843 (1991-10-01), Sato et al.

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