Integrated semiconductor device for scanning an image

Details Integrated semiconductor device for scanning an image Integrated semiconductor device for scanning an image

1974-12-24

1976-02-03

Lawrence, James W.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250209, 307311, 357 31, H01L 3100

Patent

active

039366308

ABSTRACT:
A device for scanning optical images wherein light intensity of a scanned image line is converted to a pulse width modulation rather than a charge profile. A photo transistor row is connected to an inverter chain, and OR-gates have outputs which are fed to a common read line while the input signal of each OR-gate is tapped over coordinated partial rows of the photo transistor row.

REFERENCES:
patent: 3480780 (1969-11-01), List et al.
patent: 3617823 (1971-11-01), Hofstein
patent: 3648051 (1972-03-01), Weckler
patent: 3717770 (1973-02-01), Dyck et al.
patent: 3721839 (1973-03-01), Shannon

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