NDLI: The scanistor—A solid-state image scanner

Content Provider	IEEE Xplore Digital Library
Author	Horton, J.W. Mazza, R.V. Dym, H.
Copyright Year	1963
Abstract	Scanistors form a new class of semiconducting devices which perform image scanning or dissection by reason of a novel electronic method of commutating a single output terminal to any preselected illuminated portion of the device. The selection is uniquely determined by a voltage applied across two terminals of the device. The present investigation is concerned with a strip-shaped unit called the multijunction scanistor which is comprised of a linear, integrated-circuit array of photodiodes. This device provides an output either as a sequence of pulses which represent spatial sampling of a line image at a discrete number of points, or as an analog wave-form which is a linear transformation of the line image. A theory appropriate to scanners of this type is developed and applied to the multijunction scanistor for purposes of design and analysis. A time-dependent circuit analysis of a model of the scanistor is carried out and tested experimentally. It provides an understanding of the upper limits to the scanning rate set by junction capacitance. Experimental units designed according to theory are tested for their sine-wave response, uniformity of output, sensitivity, and scanning linearity. These units are shown to give good results when used to scan a typewritten document for facsimile display on an oscilloscope.
Sponsorship	IEEE Publication
Starting Page	1513
Ending Page	1528
Page Count	16
File Size	1459376
File Format	PDF
ISSN	00189219
Volume Number	52
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1964-12-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Solid state circuits Circuit testing Semiconductivity Voltage Photodiodes Image sampling Circuit analysis Capacitance Linearity Facsimile
Content Type	Text
Resource Type	Article
Subject	Computer Science Electrical and Electronic Engineering

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The scanistor&#8212;A solid-state image scanner

The scanistor—A solid-state image scanner