Charge injection device readout

Details Charge injection device readout Charge injection device readout

1976-10-12

1978-03-14

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

250211R, 250578, H04N 530

Patent

active

040794229

ABSTRACT:
A readout technique for use with a charge injection device avoids intensity-distortion resulting from both over-illumination and pattern noise. Although the invention utilizes column- (or row-) capacitance changing to produce information signals, it provides readout by supplying charge from a reference source (capacitor) to the pixel being read, thereby restoring the column potential of the pixel to a reference level. The readout signal corresponds to the voltage change across the reference capacitor as a result of its discharge.

REFERENCES:
patent: 3786263 (1974-01-01), Michon

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