Patent ID: 8724764
Filing Date: 2014-05-13
Classification: H03L,H04L

Abstract:
1. A system, comprising: a phase detector configured to receive an input signal and an output signal and generate a phase error signal indicating a phase error by comparing the input signal and the output signal; a first filter coupled to the phase detector and configured to generate a first control signal derived from the phase error signal; a pattern error detector configured to receive the input signal and the output signal and generate a pattern error signal specifying a pattern error of the input signal by comparing the input signal and the output signal; a second filter coupled to the pattern error detector and configured to generate a second control signal derived from the pattern error signal; and a controlled oscillator coupled to the first filter and the second filter; wherein the controlled oscillator is configured to generate the output signal responsive to the first control signal, the second control signal, and a center frequency signal; wherein the controlled oscillator comprises: wherein the center frequency adjustment module comprises: