Facsimile and static presentation processing – Facsimile – Picture signal generator
Patent
1992-11-27
1994-08-02
Coles, Sr., Edward L.
Facsimile and static presentation processing
Facsimile
Picture signal generator
2502081, 348294, H04N 104
Patent
active
053350928
ABSTRACT:
A contact type image sensor including a plurality of photodiodes for converting a light signal into an electric signal according to the intensity of the light and a plurality of blocking diodes, arranged in either a back-to-back or a front-to-front connection with the photodiodes, for functioning as switching elements to have the information stored on the photodiodes read out, and adapted to be driven by a matrix drive system. For a back-to-back connection of the blocking diodes and photodiodes, a control circuit maintains the potential difference between cathodes of the photodiodes at zero volts at all times. Similarly, for a front-to-front connection of the blocking diodes and photodiodes, a control/drive circuit maintains the potential difference between the anodes of the photodiodes at zero volts at all times. Since the potential difference between the cathodes (for the back-to-back connection) or anodes (for the front-to-front connection) of all of the photodiodes is always maintained at zero volts, crosstalk at crossover portions between output lines connected to the photodiodes is reduced.
REFERENCES:
patent: 4604527 (1986-08-01), Chenevas-Paule et al.
patent: 4660095 (1987-04-01), Cannella et al.
patent: 4714836 (1987-12-01), Kitamura et al.
patent: 4764682 (1988-08-01), Swartz
Kitamura Koichi
Mimura Hidenori
Nagatake Youichi
Ohta Yasumitsu
Sai Kazuyoshi
Coles Sr. Edward L.
Nippon Steel Corporation
Rabin Steven M.
Stoll Thomas L.
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