Patent ID: 7519138
Filing Date: 2009-04-14
Classification: H01L,H03L,H04L

Abstract:
1. A data recovery method for a digital data stream of input data, comprising: receiving at least two control signals, by a phase controller, and outputting at least three sampling clocks in a bit time, where the phase of said at least three sampling clocks are adjustable; receiving said at least three sampling clocks and sampling the input data using said at least three sampling clocks as triggers, and providing at least three sampled data signals, where one of said at least three sampled data signals is used to output recovered data; receiving said at least three sampled data signals and comparing said at least three sampled data signals to said recovered data and providing at least a first pseudo-bit error value and a second pseudo-bit error value; and receiving said at least first pseudo-bit error value and said second pseudo-bit error value and estimating the phase relationship between the input data and said at least three sampling clocks using said at least first pseudo-bit error value and said second pseudo-bit error value; and adjusting the phases of said at least three sampling clocks in response to receipt of said at least two control signals and said estimated phase relationship.