发明名称 |
Frequency-locking device and frequency-locking method thereof |
摘要 |
A frequency-locking device including a digitally-controlled oscillator (DCO) and a comparing unit is disclosed. The DCO is used for generating an output frequency signal. The comparing unit receives a Keep Alive signal from a universal serial bus (USB) and the output frequency signal, and compares the Keep Alive signal with the output frequency signal to generate a calibration signal. Then, the DCO adjusts the frequency of the output frequency signal according to the calibration signal to meet the USB specification for data communication.
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申请公布号 |
US2008100388(A1) |
申请公布日期 |
2008.05.01 |
申请号 |
US20070706199 |
申请日期 |
2007.02.15 |
申请人 |
SONIX TECHNOLOGY CO., LTD. |
发明人 |
LIN YONG JHENG;HUANG WEN HSIANG;CHEN MIN-YI |
分类号 |
H03L7/099;G06F13/00 |
主分类号 |
H03L7/099 |
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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