Mouse and trackball design with contact-less roller sensor

Details Mouse and trackball design with contact-less roller sensor Mouse and trackball design with contact-less roller sensor

1995-02-03

1996-12-10

Hjerpe, Richard

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

345157, 345167, G09G 508

Patent

active

055835414

ABSTRACT:
A mouse or track ball has a roller ball mounted within a housing by three free rollers in contact with an outer peripheral surface of the roller ball. An inner core of the roller ball is provided of a magnetic material having either bumps or holes at an outer periphery thereof. The inner core is coated with a non-magnetic material providing an outer smooth and round surface for the ball.

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