发明名称 |
Circuit, Device and Method in a Circuit |
摘要 |
A method in a circuit comprises providing a first clock by a resistor-capacitor (RC) oscillator; demodulating a plurality of input signals to form a plurality of demodulated input signals; discriminating frequency ranges of the plurality of demodulated input signals according to the first clock; determining whether a first predetermined number of consecutive demodulated input signals among the plurality of demodulated input signals fall into a first predetermined frequency range; triggering a crystal oscillator to provide a second clock to calibrate the first clock if the first predetermined number of consecutive input signals fall into the first predetermined frequency range. |
申请公布号 |
US2015035610(A1) |
申请公布日期 |
2015.02.05 |
申请号 |
US201414194676 |
申请日期 |
2014.03.01 |
申请人 |
Beken Corporation |
发明人 |
Liu Jiazhou;Guo Dawei |
分类号 |
H03L7/24 |
主分类号 |
H03L7/24 |
代理机构 |
|
代理人 |
|
主权项 |
1. A circuit, comprising:
a demodulator configured to demodulate a plurality of input signals to form a plurality of demodulated input signals; a resistor-capacitor (RC) oscillator configured to provide a first clock to a frequency discriminator; the frequency discriminator is configured to discriminate frequency ranges of the plurality of demodulated input signals according to the first clock; a controller configured to determine whether at least a first predetermined number of consecutive demodulated input signals among the plurality of demodulated input signals fall into a first predetermined frequency range; a crystal oscillator; wherein the controller is further configured to trigger the crystal oscillator to provide a second clock to calibrate the RC oscillator if at least the first predetermined number of consecutive demodulated input signals fall into the first predetermined frequency range. |
地址 |
Shanghai CN |