Patent ID: 7119583
Filing Date: 2006-10-10
Classification: H03D

Abstract:
1. A phase detector operable to generate either a first control signal or a second control signal responsive to a difference in phase between a first input signal and a second input signal, the phase detector comprising: a signal comparator operable to compare the phase of the first input signal to the phase of the second input signal, the signal comparator comprising: a signal generator coupled to the first and second flip-flops of the signal comparator, the signal generator being operable to generate the first control signal responsive to signals from the first and second flip-flops indicative of the phase of the first input signal being greater than the phase of the second input signal by at least a first phase difference, and to generate the second control signal responsive to signals from the first and second flip-flops indicative of the phase of the first input signal being less than the phase of the second input signal by at least a second phase difference, the signal generator further being operable to generate neither the first control signal nor the second control signal responsive to either signals from the first and second flip-flops indicative of the first input signal being greater than the phase of the second input signal by less than the first phase difference or signals from the first and second flip-flops indicative of the first input signal being less than the phase of the second input signal by less than the second phase difference.