Imaging sensor with automatic sensitivity control comprising voltage multiplying means

摘要

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.