Optics: image projectors – Selective data retrieval – Film strip
Patent
1978-09-06
1979-11-20
Stephan, Steven L.
Optics: image projectors
Selective data retrieval
Film strip
235463, 235466, 235494, 353 27A, 364200, G03B 2312, G03B 2308, G06K 700, G06K 1900
Patent
active
041748913
ABSTRACT:
A microprocessor controlled microfilm reader/printer is arranged to transport a roll of film having all images contained thereon, in a distinctive format involving sequentially recorded photographic areas. The reader/printer has an automatic call feature up, so that any given photographic area may be selected and projected responsive to the push of a button, the operation of a rotary switch, or both. A special bar code printed along an edge of the film eliminates the need for precise control over a film transport synchronized with a code reading speed. The bar code is preferably read by an optical electronic sensor, which provides a film positioning input control signal to enable an accurate locating of a selected photographic area within a viewing area.
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Flint John R.
Rady Bruce A.
Bell & Howell Company
Moore John H.
Samlan Alan B.
Stephan Steven L.
Thibault Harry G.
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