发明名称 |
LOCKING SYSTEM AND METHOD THEREOF |
摘要 |
<p>The present invention provides a locking method and system, and the method includes: a locking system performing a phase discrimination and conversion process to an input signal F i of an external standard source and a feedback output signal F 0 of a local thermostatic crystal oscillator which pass through a frequency division, to generate a clock signal clk and a signal sign which is used to denote a frequency size relationship between the signal F i and the signal F 0 , and performing a filtering process to the signal clk and the signal sign, and performing a voltage controlled oscillation process to a signal ahead used to denote that the frequency of the signal F 0 is lower than the frequency of the signal F i and a signal lag used to denote that the frequency of the signal F 0 is higher than the frequency of the signal F i , to implement a locking of the signal F 0 and the signal F i . The present invention can realize a fast and high precise locking, reduces the circuit area and reduce the circuit cost.</p> |
申请公布号 |
EP2482460(B1) |
申请公布日期 |
2015.02.25 |
申请号 |
EP20100826056 |
申请日期 |
2010.10.22 |
申请人 |
ZTE CORPORATION |
发明人 |
LIU, YONGBO;ZHANG, HONGWEI;LI, JIAN;ZHANG, ZHAOLI;FAN, LIANG;LIU, ZHEN;JIA, YUTAO |
分类号 |
H03L7/08;H03L7/085;H03L7/093;H03L7/10 |
主分类号 |
H03L7/08 |
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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