Regulating a light source in an optical navigation device

Details Regulating a light source in an optical navigation device Regulating a light source in an optical navigation device

2007-10-09

2007-10-09

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

C345S156000, C345S166000, C345S102000

Reexamination Certificate

active

10767508

ABSTRACT:
An optical navigation device that regulates the brightness of an adjustable light source, and a method thereof, are described. Light from the light source is emitted onto a surface and reflected from the surface to a sensor. The light received by the sensor is used to measure movement of the optical navigation device relative to the surface. A light-sensitive device also receives light from the light source. The brightness of the light source can be adjusted according to the amount of light received at the light-sensitive device.

REFERENCES:
patent: 7168047 (2007-01-01), Huppi
patent: 2005/0162389 (2005-07-01), Obermeyer et al.
patent: 1 096 778 (2001-05-01), None

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