Optical-mechanical roller with ratchet

A pointing device, such as a mouse, track ball or joystick, having a roller. The roller itself has either a plurality of slits or reflective strips for optical detection. A photoemitter and photodetector are positioned to detect rotation of the roller. Thus, the present invention eliminates the need...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	CHANG TING HU, BIDIVILLE MARC A, MERMINOD ANTOINE A
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING ELECTRIC SWITCHES ELECTRICITY EMERGENCY PROTECTIVE DEVICES PHYSICS RELAYS SELECTORS
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