Opto-mechanical pointing devices that track the movement of...

Details Opto-mechanical pointing devices that track the movement of... Opto-mechanical pointing devices that track the movement of...

2006-11-30

2010-10-12

Lefkowitz, Sumati (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

C345S157000, C345S163000, C345S164000, C345S165000, C345S167000

Reexamination Certificate

active

07812822

ABSTRACT:
Each opto-mechanical pointing device includes a housing having a base that two or more rollers extend beyond to make contact with a surface. An optical module that includes a light source and a detector track the motion of the opto-mechanical pointing device directly or indirectly. Light reflecting off markings positioned opposite of each detector is used to determine the speed and distance traveled by an opto-electrical pointing device. Alternatively, the speed and distance traveled by an opto-electrical pointing device is determined by monitoring the tilt or rotation of the opto-mechanical pointing device with respect to the surface beneath the pointing device.

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