Automatic-search microfiche reader involving the use of a...

Details Automatic-search microfiche reader involving the use of a... Automatic-search microfiche reader involving the use of a...

G - Physics

06

F

342/11

G06F 3/02 (2006.01) G03B 21/11 (2006.01) G03B 23/00 (2006.01) G06K 17/00 (2006.01)

Patent

CA 1156337

AN AUTOMATIC-SEARCH MICROFICHE READER INVOLVING THE USE OF A MICROCOMPUTER Abstract of the Disclosure A microfiche reader provided with a keyboard of the type comprising a radiation emitter such as an infrared radiation emitter, each key being associated with an emitter modulation code and the modulated signal being detected by a photoreceiver. A microcomputer serves to decode the signal delivered by the photo- detector and to generate suitable electrical signals for controlling drive motors which initiate the displacements of a microfiche support plate. -1-

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