Signal processing circuit for solid state image sensor having a

Details Signal processing circuit for solid state image sensor having a Signal processing circuit for solid state image sensor having a

1996-04-03

1999-10-12

Garber, Wendy

Television

Camera, system and detail

Combined image signal generator and general image signal...

257239, 327436, H04N 5217, H01L 27148, H03K 1756

Patent

active

059661720

ABSTRACT:
A signal processing circuit for a solid state image sensor, includes a charge detection circuit for outputting a signal output from the image sensor, a first inverting amplifier receiving the signal output, and a second inverting amplifier having a source-grounded MOS transistor having a gate connected to receive an output of the first inverting amplifier. A threshold of the MOS transistor is set to be the same as a black reference voltage in the input signal applied to the MOS transistor. Thus, a reset noise included in the signal output from the image sensor is suppressed or removed.

REFERENCES:
patent: 5600451 (1997-02-01), Maki
patent: 5729285 (1998-03-01), Petersin et al.

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