EXPLOITING SHORTEST PATH FOR IMPROVED NETWORK CLOCK DISTRIBUTION

摘要

Apparatus and methods are provided for exploiting the existence of a shortest path between a source (102) and a destination (104) device by identifying the shortest path and using the signal which has taken the shortest path in preference to delayed transmissions or delayed images of the same signal, thereby improving signal distribution. The present invention provides a processor between a phase-sensitive detector (302) and a low pass filter (304) of a phase locked loop for selecting and driving the PLL primarily from the signal which has taken the shortest path.