Light modulating input device for capturing user control inputs

Details Light modulating input device for capturing user control inputs Light modulating input device for capturing user control inputs

2007-01-09

2007-01-09

Allen, Stephone B. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C345S157000

Reexamination Certificate

active

11175757

ABSTRACT:
An input device comprises a light source, a light modulator, and a sensor. The light modulator is configured to emit a path of light. The light modulator is arranged relative to the light source transversely across the path of light to produce a light contrast pattern from the light modulator. The sensor module is configured to detect relative motion between the light contrast pattern and the sensor module.

REFERENCES:
patent: 6333733 (2001-12-01), Andersson et al.
patent: 2003/0151594 (2003-08-01), Tsai
patent: 2005/0110755 (2005-05-01), Harley et al.
“How Computer Mice Work”, Howstuffworks, pp. 1-6, (Jun. 28, 2005), <http://computer.howstuffworks.com/mouse2>.
“Optical Encoder Applications”, Computer Optical Products, Inc., 7 pgs., <www.opticalencoder.com>.

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