Solid-state imaging system with a feed-back circuit including a

Details Solid-state imaging system with a feed-back circuit including a Solid-state imaging system with a feed-back circuit including a

1989-03-02

1991-06-25

Orsino, Joseph A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358228, H04N 314

Patent

active

050272179

ABSTRACT:
A solid-state imaging system is provided with: a solid-state imaging device including a first scanning circuit for outputting, in a time series manner, signals of a plurality of picture element cells arranged in a two dimensional manner, and a second scanning circuit which performs its vertical scanning operation individually from the vertical scanning operation performed by the first scanning circuit. A sensitivity setting circuit compares a read out signal from the solid-state imaging device and a reference signal which corresponds to the level of a signal to be set. The sensitivity setting circuit also controls the operation start timing of the second scanning circuit so as to make the two signals substantially the same, whereby a unit sensitivity variation is enlarged corresponding to an improvement in the sensitivity to be set for the solid-state imaging device.

REFERENCES:
patent: 4335405 (1982-06-01), Sakane et al.
patent: 4573076 (1986-02-01), Tisue et al.
patent: 4574309 (1986-03-01), Arisawa et al.
patent: 4870493 (1989-09-01), Izawa et al.

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