Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1983-03-29
1985-12-03
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
358213, H04N 314
Patent
active
045568006
ABSTRACT:
An optical image sensor apparatus in which a plurality of photosensors arrayed in a primary scanning direction are scanned to produce readout signals. The plurality of photosensors are classified into a number of groups each including a predetermined number of the photosensors, wherein those photosensors occupying equivalently the same position in the different groups are combined in common. The outputs of the photosensors are sequentially and selectively scanned on a group basis to produce readout signal for each of the groups. To provide a scanning readout operation at an increased speed, an integrating circuit is provided for each of the photosensors exchangeably for each group. The outputs of all the photosensors belonging to a given one of the group are simultaneously supplied to the respective integrating circuits. The readout signal output is obtained by scanning sequentially the outputs of the integrating circuits.
REFERENCES:
patent: 4390791 (1983-06-01), Hatanaka et al.
patent: 4407010 (1983-09-01), Baji et al.
patent: 4430672 (1984-02-01), Berger
patent: 4495409 (1985-01-01), Baji et al.
Baji Toru
Ebisui Eizou
Izawa Yuji
Ohta Hisao
Tsukada Toshihisa
Brophy J. Jon
Hitachi , Ltd.
Nelms David C.
Nippon Telegraph & Telephone Public Corp.
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