Title: Integrated semiconductor device for scanning an image

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.

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Inventors: Blossfeld, Lothar (Hochdorf, DT)

Application Number: 536053
Filing Date: 1974-12-24
Publication_date: 1976-02-03
Assignee: ITT Industries, Inc. (New York, NY)
Primary Class(es): 257/443 327/515, 331/57, 331/111, 348/294
Other Classes:
US Patent Ref:

3480780	Nov, 1969	List et al.	250/209.
3617823	Nov, 1971	Hofstein	250/211.
3648051	Mar, 1972	Weckler	250/211.
3717770	Feb, 1973	Dyck et al.	250/211.
3721839	Mar, 1973	Shannon	307/311.

Other Refs:
Primary Examiner: Lawrence, James W.
Assistant Examiner: LaRoche, E. R.
Attorney: O'Halloran; John T., Lombardi, Jr.; Menotti J., Ingrassia; Vincent