Optical joystick for hand-held communication device

Details Optical joystick for hand-held communication device Optical joystick for hand-held communication device

2008-06-03

2008-06-03

Lewis, David L. (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

C345S169000, C345S179000

Reexamination Certificate

active

07382352

ABSTRACT:
An optical joystick for a hand-held communication device employs an image capture device for sensing movement of a stylus by capturing images of the stylus or a target attached to a socket receiving the stylus. The captured images are processed for tracking movement of the stylus so that movement of the stylus may be used for controlling functions of the hand-held communication device.

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