Patent ID: 6603300
Filing Date: 2003-08-05
Classification: H03L

Abstract:
A phase-detecting device for generating a delay control signal to delay a reference signal by different delay times according to said delay control signal, the phase-detecting device comprising:a phase detector for detecting a phase difference between said reference signal and a a feedback signal and then outputting a detected signal; and a dragging device, coupled to said phase detector, for outputting said delay control signal according to said detected signal so as to adjust a delay time of said reference signal, wherein said dragging device comprises: an inversion logic circuit, coupled to said phase detector, for inverting said detected signal and outputting an inverted detected signal; a latch device, coupled to said inversion logic circuit, for outputting a latch signal according to said inverted detected signal; and an OR logic circuit, coupled to said phase detector and said latch device, for outputting said delay control signal according to said detected signal and said latch signal.