Patent ID: 7702058
Filing Date: 2010-04-20
Classification: H03L,H03M,H04L

Abstract:
1. A method for data recovery, the method comprises the steps of: a) receiving a stream of biphase encoded data, wherein the stream of biphase encoded data includes a plurality of frames; b) determining whether a next transition of a frame of the plurality of frames occurs during a first, second, or third time window after a preceding transition of the frame by: c) synchronizing to a data rate of the stream of biphase encoded data based on the next transition and the preceding transition when the next transition occurs during the second time window; d) synchronizing to the data rate of the stream of biphase encoded data based on the preceding transition and a subsequent transition when the next transition occurred during the first or the third time window; e) adjusting a dynamic divider based on the data rate and an output of a phase locked loop to produce a divided value, wherein the adjusting the dynamic divider further comprises: determining a current count based on a number of clock cycles of the output of the phase locked loop that occur during a frame of the stream of biphase encoded data; comparing the current count with a stored minimum count; and decrementing the stored minimum count when the current count compares unfavorably to the stored minimum count; and f) generating a recovered data clock signal based on the output of the phased locked loop and the divided value.