Imaging sensor with automatic sensitivity control comprising vol

Details Imaging sensor with automatic sensitivity control comprising vol Imaging sensor with automatic sensitivity control comprising vol

1983-06-06

1986-04-15

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250211J, 358213, H01J 4014

Patent

active

045830029

ABSTRACT:
A solid-state imaging sensor in which the sensitivity of the sensor is automatically adjusted in accordance with the overall intensity of the image being sensed. A charging potential applied to an image signal storage capacitor in each pixel of an array of pixels of which the sensor is composed is dynamically varied as the overall intensity of the image being sensed changes. A voltage multiplying circuit, which may be either light sensitive or light insensitive, supplies the variable charging potential. If the voltage multiplying circuit is light insensitive, an elongated photodiode is provided along two sides of the sensor array to adjust the charging potential.

REFERENCES:
patent: 3944816 (1976-03-01), Harada
patent: 4334151 (1982-06-01), Herbst et al.
patent: 4338514 (1982-07-01), Bixby
patent: 4340819 (1982-07-01), Ogasawara et al.
patent: 4471228 (1984-09-01), Nishizawa et al.
patent: 4479062 (1984-10-01), Kawasaki et al.

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