Patent ID: 8964919
Filing Date: 2015-02-24
Classification: G06F,H04L

Abstract:
1. A method, comprising: calculating, using a phase estimator, a phase estimate of a first clock domain based on a relative frequency estimate between a second clock domain and the first clock domain at a first point in time; determining, based on the phase estimate, a first time during which a signal transmitted from the first clock domain to the second clock domain is unchanging such that the signal is capable of being safely sampled in the second clock domain; generating, during the first time, a first sampled signal by sampling the signal in the second clock domain; calculating an updated phase estimate of the first clock domain based on the relative frequency estimate between the second clock domain and the first clock domain at a second point in time; determining, based on the updated phase estimate, a second time during which the signal from the first clock domain is changing such that the signal is not capable of being safely sampled in the second clock domain; and maintaining, during the second time, the first sampled signal.