Patent · US Active

Method for saving power consumption of position sensitive detector

US8384032B2 · kind B2 · utility

4Cited by

3References

4Claims

0Family size

Assignee

Shanghai Kohler Electronics, Ltd. · CN

Inventors

Weigen Chen · Chongqing, CN
Guofeng Chen · Fremont, US
Xingyan Liu · Shanghai, CN
Xiongtao Zheng · Shanghai, CN

Key dates

Filing date	Oct 21, 2009
Grant date	Feb 26, 2013
Priority date	—
Expiry date	Mar 30, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG01S17/48
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for saving power consumption of a position sensitive detector used in a smart bathroom product includes changing infrared light emitting strength modes depending on the received strength of reflected infrared light. If the emitting mode is already the strongest, and the strength of the reflected infrared light received back from a reflecting object is weak, the method includes conducting multiple subsequent emissions and averaging the returns to estimate a distance to the infrared light reflecting object.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.