Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1981-08-31
1985-01-08
Chin, Tommy P.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358167, H04N 314, H04N 530
Patent
active
044929803
ABSTRACT:
A solid state image-sensing device which comprises an image-sensing area formed of a plurality of matrix-arranged cells exposed to an introduced image light and an optical black connected to a readout section in parallel relationship with the image-sensing area. An image light is prevented from entering the optical black. Only noise charges (dark current charges) sent forth from the optical black are transferred to a control circuit. A gate electrode control signal for eliminating charges whose amount corresponds to that of the noise charges from the total charges collected in the storage regions of the matrix-arranged cells of the image-sensing area is produced by a control circuit. The gate electrode control signal is supplied to a gate electrode positioned between the photosensing section and vertical transfer section of the cells of the image-sensing area. A potential well lying under the gate electrode has its depth controlled by the gate electrode control signal. At first, a charge whose amount is substantially equal to that of a light-generated signal charge stored in the storage region of the image-sensing area is transferred to a vertical transfer section. After elimination of the noise charges, the remaining charges are returned at least once to the photosensing sections of the respective cells to be held in the storage regions of the photosensing sections of the cells for a prescribed length of time.
REFERENCES:
patent: 4293877 (1981-10-01), Tsunekawa
patent: 4302779 (1981-11-01), Inque
patent: 4317134 (1982-02-01), Woo
patent: 4322753 (1982-03-01), Ishihara
TV-Compatible Schottky Barrier Monolithic IRCCD Focal Plane, by Skolnik et al., APIE vol. 197, Modern Utilization of Infrared Technology V (1979).
W. F. Kosonocky and D. J. Sauer: RCA Review, vol. 40, pp. 241-277, Sep. 1979.
Chin Tommy P.
Tokyo Shibaura Denki Kabushiki Kaisha
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