CCD imager with on-chip processing

Details CCD imager with on-chip processing CCD imager with on-chip processing

1985-08-27

1987-04-21

Rubinson, Gene Z.

Facsimile and static presentation processing

Facsimile

Recording apparatus

357 24, H04N 530

Patent

active

046600906

ABSTRACT:
A CCD imager with a correlated clamp sample and hold amplifier on chip includes a chain of CCD wells, a charge-sensing node coupled to one end of the chain of CCD wells, and a clock to clock charge packets from the chain of CCD wells into the charge-sensing node. A dummy charge-sensing node is integrated into the same monocrystalline semiconductor substrate as the charge-sensing node, and the charge-sensing node and the dummy node are connected to a common reference voltage. An amplifier senses a predetermined voltage change on the charge-sensing node with reference to the voltage on the dummy node after a charge packet has been transferred into the charge-sensing node.

REFERENCES:
patent: 4496982 (1985-01-01), Levine
patent: 4556851 (1985-12-01), Levine

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