Image sensor driving circuit

Details Image sensor driving circuit Image sensor driving circuit

1987-11-13

1988-11-29

Ng, Jin F.

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821311, 35821315, H09N 314

Patent

active

047885955

ABSTRACT:
An image sensor driving circuit for driving an image sensor by applying a voltage thereto comprises a voltage supplying circuit for supplying a positive or negative polarity voltage to the image sensor responsive to a control signal, a converting circuit for converting an output photocurrent of the image sensor into a detection voltage, an inverting circuit for inverting the detection voltage responsive to the control signal, and a control circuit for generating the control signal. The control signal has a predetermined period so that the voltage supplying circuit alternately supplies the positive and negative polarity voltages with the predetermined period and the inverting circuit inverts the detection voltage only during one of first and second halves of each period of the control signal.

REFERENCES:
patent: 4495523 (1985-01-01), Ozawa
patent: 4514765 (1985-04-01), Miyata et al.
patent: 4543610 (1985-09-01), Ozawa et al.
patent: 4549088 (1985-10-01), Ozawa
S. Bornonkay et al., "Analyse de Documents pour la Telecopie", Acta Electronica, 21, 1, 1978, pp. 55-70.

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