| 发明名称 |
Circuit and method for detecting oscillating frequency drift |
| 摘要 |
An oscillating frequency drift detecting method, which comprises: receiving an oscillating signal with an oscillating frequency, wherein the oscillating signal is generated by a crystal oscillator; generating a self-mixing signal according to the oscillating signal; obtaining a self-mixing frequency of a maximum power of the self-mixing signal in a specific frequency range; and computing a frequency drift of the oscillating frequency, according to the self-mixing frequency of the maximum power, and the oscillating frequency. |
| 申请公布号 |
US9000855(B2) |
申请公布日期 |
2015.04.07 |
| 申请号 |
US201213473608 |
申请日期 |
2012.05.17 |
| 申请人 |
Realtek Semiconductor Corp. |
发明人 |
Huang Ming-Chung |
| 分类号 |
H03L1/00;H03L1/02 |
主分类号 |
H03L1/00 |
| 代理机构 |
|
代理人 |
Hsu Winston;Margo Scott |
| 主权项 |
1. An oscillating frequency drift detecting method, comprising:
receiving an oscillating signal with an oscillating frequency, wherein the oscillating signal is generated by a crystal oscillator; generating a self-mixing signal according to the oscillating signal; obtaining a self-mixing frequency of a maximum power of the self-mixing signal in a specific frequency range; and computing a frequency drift of the oscillating frequency, according to the self-mixing frequency of the maximum power, and the oscillating frequency. |
| 地址 |
Science Park, HsinChu TW |
