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

1994-12-08

1996-07-23

Greening, Wendy R.

Television

Camera, system and detail

Combined image signal generator and general image signal...

257239, H04N 314

Patent

active

055394574

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: 4713512 (1988-01-01), Endo et al.
patent: 4809074 (1989-02-01), Imaide et al.
patent: 4994877 (1991-02-01), Ino et al.
patent: 5306905 (1994-04-01), Guillory et al.
By N. Teranishi et al., "Partition Noise in CCD Signal Detection", IEEE, 1985, pp. 452-455.

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