The present invention concerns a phase Detector for detecting a phase difference between a data clock DATA-CLK and a reference clock REF-CLK using a data signal DATA. A trasnsition of the data signal DATA is synchronous with a transition of the data clock DATA-CLK. The data clock DATA-CLK and the reference...http://www.google.ca/patents/US7251573?utm_source=gb-gplus-sharePatent US7251573 - Phase detector
