Solid state image pickup apparatus

Details Solid state image pickup apparatus Solid state image pickup apparatus

1996-03-06

1999-08-03

Garber, Wendy

Television

Camera, system and detail

Solid-state image sensor

348241, 348308, H04N 314, H04N 5335

Patent

active

059331895

ABSTRACT:
A solid-state image pickup device which enables an improvement in the S/N ratio of the video signal. The solid-state image pickup device has a current sample-and-hold means which stores either a current signal consisting of a first component which is responsive to the sum of the incident light and the dark output from a plurality of pixels at separate times or a current signal consisting of a second component which is responsive to the dark output, and a means for the purpose of sequentially reading out, to a horizontal read line, only a current signal consisting of a component that is responsive to the amount of incident light, this being obtained by means of a subsequent subtraction performed between the other of the first-component and second-component current signals and the current signal which has already been stored in the current sample-and-hold means.

REFERENCES:
patent: 4809075 (1989-02-01), Akimoto et al.
patent: 4819070 (1989-04-01), Hynecek
patent: 4942474 (1990-07-01), Akimoto et al.
patent: 5134488 (1992-07-01), Suaer
patent: 5162912 (1992-11-01), Ueno et al.
patent: 5276521 (1994-01-01), Mori

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