Oscillator calibration method, electronic device and chip

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United States of America Patent

PATENT NO 11791771
APP PUB NO 20230066799A1
SERIAL NO

17899986

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Abstract

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A method for calibrating a first clock signal output by an oscillation module to obtain a calibrated second clock signal includes obtaining a first count value by counting a third clock signal of an external device. A second count value is obtained by counting a scan signal of the oscillation module, and a first cycle ratio is obtained based on the first count value and the second count value. It is determined whether the first clock signal has a frequency deviation by comparing the first cycle ratio with a reference cycle ratio. A frequency division coefficient of the oscillation module is adjusted when the first clock signal has the frequency deviation, so that the oscillation module divides a frequency of the first clock signal according to the adjusted frequency division coefficient, thereby obtaining the calibrated second clock signal.

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Patent Owner(s)

Patent OwnerAddress
FOCALTECH ELECTRONICS (SHENZHEN) CO LTDNO 210518 YUEHAI SCIENCE PARK BLOCK 2 SHENZHEN CITY GUANGDONG PROVINCE SHENZHEN CITY GUANGDONG PROVINCE 518054

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Huang, Xiao-Lin Guangdong, CN 1 0
Luo, Zhi-Qiang Guangdong, CN 1 0
Xiao, Bei Guangdong, CN 2 3

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