Patent ID: 8253500

Claim:
A frequency-phase adjusting device, comprising: a first controller, generating a first control signal according to a target frequency and a current frequency; a second controller, coupled to the first controller, generating a second control signal according to the first control signal, wherein the second control signal is used for deciding a first frequency difference, a designated duration, and a second frequency difference; and an oscillating circuit, coupled to the second controller, adjusting the current frequency according to the first frequency difference, the designated duration, and the second frequency difference; wherein the current frequency of a first duration is set as a first frequency; the current frequency of the designated duration is set as a second frequency; the current frequency of a second duration is set as a third frequency; the first frequency difference is equal to a frequency difference between the first frequency and the second frequency; the second frequency difference is equal to a frequency difference between the second frequency and the third frequency, and the first duration, the designated duration, and the second duration are continuous time periods in turn.