Optics: image projectors – Miscellaneous
Patent
1992-03-31
1993-07-27
Cuchlinski, Jr., William A.
Optics: image projectors
Miscellaneous
353119, 353DIG3, G03B 2100
Patent
active
052314340
ABSTRACT:
An overhead projector (OHP) presentation system uses a liquid crystal display (LCD) panel to project electronically stored graphic images. The OHP preferably includes an integrated computer having a plurality of output ports for connection to various peripheral devices. A novel interface card is also used to provide electrical connections between the computer and the LCD panel, providing the further benefit of aligning the transmissive portion of the panel with the stage of the overhead projector.
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patent: 4846694 (1989-07-01), Erhardt
patent: 4880303 (1989-11-01), Grunwald
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Brochure on "Videoshow" (General Parametrics Corp.) Publication date unkown.
Kennedy James K.
Sweaton Michael C.
Tritle Gary L.
Cuchlinski Jr. William A.
Dowling William C.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
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