Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1979-07-02
1981-07-28
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
307221D, H01J 4014
Patent
active
042812542
ABSTRACT:
A photosensor array with single transfer register (36) and individual transfer gates (38) for conducting signal packets derived from the photosensors (12) of the array to the transfer register phase gates. The number of phase gates of the transfer register is equal to the number of photosensors that comprise the array, and to assure at least two phase gates for each photosensor signal packet, a ring counter (40) is provided to sequentially trigger each transfer switch, operation of the ring counter being integrated with shift register clock drive pulses (.phi.1, .phi.2) to shift the signals transferred to the shift register and assure the required plural phase gates at the instant of transfer. The aforedescribed array permits multiple arrays to be constructed on a common substrate with the array photosensors in face-to-face relationship.
REFERENCES:
patent: 3683193 (1972-08-01), Weimer
patent: 3715485 (1973-02-01), Weimer
patent: 3814846 (1974-06-01), Snow
patent: 3822362 (1974-07-01), Weckler et al.
patent: 3876989 (1975-04-01), Bankowski et al.
patent: 3987292 (1976-10-01), Means
patent: 4084107 (1978-04-01), Ohba et al.
patent: 4145721 (1979-03-01), Beaudouin et al.
Nelms David C.
Xerox Corporation
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