초록 ▼

A solid state image sensor in which the charge accumulation period of each picture element can be set at the same point of time. Additionally, the lenngth of the charge period can be set at will, thus providing a video signal picture in which all picture elements bear image information with the same

A solid state image sensor in which the charge accumulation period of each picture element can be set at the same point of time. Additionally, the lenngth of the charge period can be set at will, thus providing a video signal picture in which all picture elements bear image information with the same time reference. Sensitivity of the solid state image senosr can be adjusted by setting the length of charge accumulation period. In the solid state image sensor, photodiodes are disposed as picture elements, and video signal is output in accordance with a charge which is light-generated within respective photodiodes. A series circuit of a switch and a capacitance element is connected in parallel with the photodiode. The switch is closed for at least the charge accumulation period during which charge is light-generated within the photodiode, and the video signal is obtained in accordance with level of charging of said capacitance element.

대표청구항 ▼

A solid state image sensor having a plurality of detector cells and outputting a video signal in accordance with a charge that is light-generated in a photoelectric conversion element provided in each of said detector cells, said solid state image sensor comprising: capacitance means for accumulatin

A solid state image sensor having a plurality of detector cells and outputting a video signal in accordance with a charge that is light-generated in a photoelectric conversion element provided in each of said detector cells, said solid state image sensor comprising: capacitance means for accumulating said light-generated charge; first switching means, connected in series with said capacitance means, for controlling current flow through said capacitance means, said first switching means being closed to permit current to flow to said capacitance means at least when during a period of accumulating charge said capacitance means accumulates said light-generated charge, said first switching means and said capacitance means forming a series circuit connected in parallel with said photoelectric conversion element; and video output means for outputting a video signal in accordance with the amount of charge accumulated in said capacitance means.