Optical trackball device and electronic apparatus

Details Optical trackball device and electronic apparatus Optical trackball device and electronic apparatus

2006-08-29

2006-08-29

Shalwala, Bipin (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

C345S161000, C345S157000, C345S159000

Reexamination Certificate

active

07098895

ABSTRACT:
An optical trackball device of the present invention includes a ball as an operating member, using a material that partially transmits light, and this ball is rotatably supported by a support member. Light emitted from a light emitter disposed beneath the ball is reflected on this ball. A detector detects the reflected light to identify rotation of the ball. Since the light from the light emitter is partially transmitted through the ball, the ball can be illuminated without providing an additional component. Accordingly, a location of the ball is easily recognizable even in a dark place.

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