Hand held light actuated point & click device

Multiple light emitting diodes (LEDs) capable of emitting light at different optical wavelengths are provided in a hand held device with switches for activating the LEDs separately or jointly. A matrix of radiant energy detectors are arrayed across a presentation screen at the display pixel location...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WHITE WILLIAM GEORGE, KIM MOON JU
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION CALCULATING COMPUTING COUNTING CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC DIGITAL DATA PROCESSING PHYSICS SEALS
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