发明名称 |
Frequency calibration device and method for programmable oscillator |
摘要 |
A frequency calibration method for a programmable oscillator includes the steps of: counting an oversampling number of an oversampling signal and estimating an accumulated bit number of a USB data stream according to the oversampling signal; calculating a difference between the oversampling number and M times of the accumulated bit number when the accumulated bit number is larger than or equal to a predetermined value; and determining a frequency calibration step of the oversampling signal according to the difference. The present invention further provides a frequency calibration device for a programmable oscillator.
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申请公布号 |
US8283983(B2) |
申请公布日期 |
2012.10.09 |
申请号 |
US20100948265 |
申请日期 |
2010.11.17 |
申请人 |
WU CHIH YEN;HUANG CHIEN JUNG;LIU HSIANG SHENG;CHEN CHING CHIH;PIXART IMAGING INC. |
发明人 |
WU CHIH YEN;HUANG CHIEN JUNG;LIU HSIANG SHENG;CHEN CHING CHIH |
分类号 |
H03L7/06;G06F1/04 |
主分类号 |
H03L7/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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