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US 2006/0033015 A1Published application
Optical mouse with reduced power consumption
AssigneeAvago Technologies ECBU IP (Singapore) Pte. Ltd.
InventorsDavid Feldmeier, Tong Xie
Life of this patent
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Abstract
Power savings occur when the optical path of an optical navigation device is configured to provide that maximum energy from the light source is reflected by the navigation surface to the photosensors of the optical navigation chip. Additional power savings may be achieved when the maximized optical path is combined with the features of a controlled light source that uses specular reflection.
Claims9
A navigation system comprising:
- a source module generating electromagnetic radiation;
- a detector module, receiving one of reflected and scattered electromagnetic radiation, generating an output signal indicative of reflected power of a surface;
- and
- a drive circuit, receiving the output signal, generating a drive signal for the source module;
- a housing, the source module, detector module, and drive circuit positioned therein;
- wherein source module and the detector module are positioned approximately symmetrically about a vertical axis extending from the centroid of the illumination area of the surface.
3 more elements
Dependencies are inferred from the claim text.