Solid-state image sensing apparatus having an automatic control

Details Solid-state image sensing apparatus having an automatic control Solid-state image sensing apparatus having an automatic control

1985-09-05

1987-07-07

Munson, Gene M.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

357 24, 357 30, 250578, 35821312, H03K 342, H01L 2978, H01L 2714, H01J 4014

Patent

active

046789383

ABSTRACT:
A solid-state image sensing apparatus employs normally-ON type static induction transistors to constitute picture elements. Some of the picture elements are shielded from light so as to serve as light-shielded picture elements. The apparatus is provided with an automatic control loop which controls the voltage level of each of the row selecting signals in accordance with the output of the corresponding light-shielded picture element, whereby the voltage level of each row selecting signal is automatically controlled in such a manner that the output of the corresponding light-shielded picture element becomes zero. Thus, it is possible to obtain a video output which includes no offset nor dark output without decreasing the dynamic range.

REFERENCES:
patent: 4387402 (1983-06-01), Lewis
patent: 4524391 (1985-06-01), Nishizawa et al.
patent: 4525742 (1985-06-01), Nishizawa et al.
patent: 4556909 (1985-12-01), Yamada
patent: 4562474 (1985-12-01), Nishizawa

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