Solid-state imaging device including noise subtraction with pola

Details Solid-state imaging device including noise subtraction with pola Solid-state imaging device including noise subtraction with pola

1983-07-29

1985-09-24

Rubinson, Gene Z.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358167, H04N 314, H04N 521

Patent

active

045436100

ABSTRACT:
A solid-state imaging device comprises a number of photodiodes arrayed in horizontal rows and vertical columns, a first output circuit for sequentially reading out signal charges from those photodiodes which are arrayed on odd-numbered horizontal rows, a second output circuit for sequentially reading out signal charges from the photodiodes arrayed on the even-numbered horizontal rows, a synchronizing pulse generator for synchronizing operation of the first and second output circuits, a first subtracting circuit for determining the difference between the output signals of the first and second output circuits in odd-numbered field, and a second subtracting circuit for determining the difference between the output signals of the first and second output circuits in even-numbered field. The outputs of the first and second subtracting circuit are alternately extracted in synchronism with the synchronizing pulse produced by the synchronizing pulse generator. The solid-state imaging device is made immune to the smear phenomenon. The invention can be advantageously applied to the solid-state imaging device of CCD type as well as MOS type.

REFERENCES:
patent: 4067046 (1978-01-01), Nakatani et al.
patent: 4079423 (1978-03-01), Diehl
patent: 4240116 (1980-12-01), Tomlinson, Jr.
patent: 4281338 (1981-07-01), Takahashi et al.
patent: 4392158 (1983-07-01), Aoki et al.

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