Navigation system and mouse device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10042383
APP PUB NO 20180173269A1
SERIAL NO

15896106

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A clock calibration method of a navigation system is provided. The clock calibration method includes: entering a calibration mode; sequentially issuing, by a host, a count start signal and a count end signal separated by a time interval; counting a local oscillation frequency of a local oscillator when a navigation device receives the count start signal from the host; disabling the counting when the navigation device receives the count end signal from the host and generating a current count; generating a calibration signal according to the current count and a predetermined count corresponding to the time interval; and calibrating the local oscillation frequency of the local oscillator according to the calibration signal.

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First Claim

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Patent Owner(s)

  • PIXART IMAGING INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lim, Kevin Len-Li Penang, MY 39 60
Tan, Zi-Hao Penang, MY 15 10

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