Passive light stylus and user input device using same

Details Passive light stylus and user input device using same Passive light stylus and user input device using same

2003-12-30

2008-03-25

Osorio, Ricardo (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Stylus

C178S019050

Reexamination Certificate

active

07348969

ABSTRACT:
The present disclosure provides a passive light stylus that produces a defined intensity profile detectable by a user input device when at least a portion of a tip of the stylus is proximate an input surface of the user input device. In some embodiments, the stylus includes a housing including an entrance aperture configured to collect ambient light and an exit aperture configured to emit the collected light, where the exit aperture is proximate a tip of the stylus. The stylus also includes a light guide disposed within the housing, where the light guide is in optical communication with the entrance aperture and the exit aperture such that the light guide directs collected light from the entrance aperture to the exit aperture.

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U.S. Appl. No. 10/721,603, filed Nov. 25, 2003, entitled “Light-Emitting Stylus and User Input Device Using Same”.
U.S. Appl. No. 10/721,685, filed Nov. 25, 2003, entitled “Light Emitting Stylus and User Input Device Using Same”.

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