Patent ID: 8085033
Filing Date: 2011-12-27
Classification: G01R

Abstract:
1. A phase detection system comprising: an input terminal; a first peak detection unit; a second peak detection unit; an averaging unit; an offset unit; and a comparator unit, wherein the input terminal is connected to the first peak detection unit and to the second peak detection unit and wherein the input terminal provides an input signal to the phase detection system; wherein the averaging unit is connected between the first peak detection unit and the offset unit and between the second peak detection unit and the offset unit, and wherein the averaging unit generates an intermediate signal; wherein the offset unit is further connected to the input terminal and generates two comparable signals by applying a predetermined offset in signal strength to at least one signal of the group consisting of the input signal and the intermediate signal; and wherein the comparator unit is connected to the offset unit and generates an output signal which is indicative of the phase of the input signal by comparing the two comparable signals, and wherein the phase detection system generates a first preliminary edge signal when the input signal equals the intermediate signal, and wherein the phase detection system generates a second edge signal when the intermediate signal equals zero.