Electronic shutter for a CCD image sensor

Details Electronic shutter for a CCD image sensor Electronic shutter for a CCD image sensor

1987-10-21

1989-10-17

Groody, James J.

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821331, H04N 5335

Patent

active

048751006

ABSTRACT:
A solid state imager device having an electronic shutter function suitable for use in a video camera or an electronic still camera to suppress brightness differences on TV screens between open and closed periods of the shutter having a semiconductor substrate of a first conductivity type, a region of second conductivity type formed on the semiconductivity substrate of the first conductivity type and a signal charge accumulating region formed on the surface side of the second conductivity type region wherein, a predetermined voltage is applied to the semiconductor substrate of the first conductivity type and the signal charges accumulated in the signal charge accumulating region are discharged to the semiconductor substrate of the first conductivity type, whereby, the exposure time of the solid state imager device can be controlled so that when this imager device is used, for example, in a video camera, the video camera does not have to be provided with a mechanical shutter.

REFERENCES:
patent: 3934161 (1976-01-01), Caywood
patent: 4524391 (1985-06-01), Nishizawa et al.
patent: 4605862 (1986-08-01), Takeshita
patent: 4626915 (1986-12-01), Takatsu
patent: 4626916 (1986-12-01), Mizoguchi et al.
patent: 4636865 (1987-01-01), Imai
patent: 4743778 (1988-05-01), Takatsu et al.
patent: 4769709 (1988-09-01), Van De Steeg
1982 ISSCC Digest of Technical Paper, pp. 168-169, 314, "Interline CCD Image with an Anti Blooming Structure", Ishihara et al.

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