Sistema de bloqueo y procedimiento del mismo

摘要

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.