The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 2014
Filed:
Oct. 22, 2010
Yongbo Liu, Shenzhen, CN;
Hongwei Zhang, Shenzhen, CN;
Jian LI, Shenzhen, CN;
Zhaoli Zhang, Shenzhen, CN;
Liang Fan, Shenzhen, CN;
Zhen Liu, Shenzhen, CN;
Yutao Jia, Shenzhen, CN;
Yongbo Liu, Shenzhen, CN;
Hongwei Zhang, Shenzhen, CN;
Jian Li, Shenzhen, CN;
Zhaoli Zhang, Shenzhen, CN;
Liang Fan, Shenzhen, CN;
Zhen Liu, Shenzhen, CN;
Yutao Jia, Shenzhen, CN;
ZTE Corporation, Shenzhen, Guangdong Province, CN;
Abstract
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 Fof an external standard source and a feedback output signal Fof 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 Fand the signal F, 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 Fis lower than the frequency of the signal Fand a signal lag used to denote that the frequency of the signal Fis higher than the frequency of the signal F, to implement a locking of the signal Fand the signal F.