Circuits and methods for aligning two or more signals including a first and second signal. In one embodiment, a shift register generates two or more shifted copies of the second signal, and each of a plurality of phase detectors receives the first signal and one of the shifted copies of the second signal,...http://www.google.es/patents/US7295049?utm_source=gb-gplus-sharePatente US7295049 - Method and circuit for rapid alignment of signals
