Photosensitive chip having transfer circuits which compensate fo

Details Photosensitive chip having transfer circuits which compensate fo Photosensitive chip having transfer circuits which compensate fo

1995-05-19

1997-05-27

Harvey, David E.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348294, 257435, H04N 5335

Patent

active

056336799

ABSTRACT:
A photosensitive device includes a plurality of active photosensors, for receiving light from an original image, and at least one dark photosensor. The dark photosensor is shielded with a light shield so that it receives no light, and is used to establish a dark offset for the device. Each active photosensor and the dark photosensor have associated therewith an individual transfer circuit, including a reset node having a capacitance associated therewith. The capacitance of the reset node for the dark photosensor is selected to compensate for the extra capacitance created by the light shield.

REFERENCES:
patent: 5081536 (1992-01-01), Tandon et al.
patent: 5159186 (1992-10-01), Ohzu

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