Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1978-02-13
1979-07-03
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
353 26R, G06K 710
Patent
active
041601696
ABSTRACT:
Apparatus for scanning microimages containing graphic information which iudes a film provided with a matrix of microimage spaces, at least some of the spaces being occupied by microimages, and a light source for illuminating the microimages to generate light images of the graphic information contained on the microimages. The apparatus further includes light sensing devices for generating analog signals which represent the graphic information contained upon the microimages and missing image sensors for generating a signal which signifies that a given microimage space of the matrix is not occupied by a microimage.
REFERENCES:
patent: 3911410 (1975-10-01), Ohta et al.
patent: 4110020 (1978-08-01), Johnson et al.
Endicott, Jr. Donald L.
Solarek, Jr. Daniel J.
Johnston Ervin F.
Nelms David C.
Sciascia Richard S.
Skarsten James O.
The United States of America as represented by the Secretary of
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