United States Patent 3,560,756
February 2, 1971

Optical Storage Device With Solid State Light Actuated Scanning Means For Solid State Output Means
Edward F. Labuda

Filed August 28, 1968
Image of US PATENT 3,560,756

Abstract of the Disclosure

One surface of the target of a television camera device is scanned by a light beam, with light to be recorded being images on the opposite surface. The target comprises a substrate having a diode array on one side with a photoconductive layer being sandwiched between a transparent conductive film and the diode array. A voltage on the conductive film reverse biases the diodes. During one frame time, the diodes discharge as a function of light intensity imaged on the substrate. The scanning light beam recharges the diodes by increasing the localized conductivity of the photoconductive layer, and thus generates a video signal output.
Figure descriptions: cover graphic

  • a schematic view of an illustrated embodiment of the invention.

 Citations [54]:
3,011,089 11/1961 Reynolds 3,403,284 09/1968 Buck et al 3,415,996 12/1968 Grimmeiss 3,423,623 01/1969 Wendland 3,433,994 03/1969 Gibson, Jr.
National Museum of American History
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