Patent ID: 8649400
Filing Date: 2014-02-11
Classification: H04J

Abstract:
1. A method for timing an output signal based on a timing of an input signal, the method comprising: receiving, by signal processing circuitry, a reference clock; receiving, by signal processing circuitry, the input signal; observing, by signal processing circuitry, the input signal during a first time interval that is an integral number of instances of the reference clock to determine a first clock rate that is a first number of clock instances extracted from the input signal that occur during the first time interval; determining, by signal processing circuitry, a second clock rate during a second time interval, the second time interval based on a protocol of the output signal; and determining, by signal processing circuitry, a difference of a product of the first clock rate and the second time interval and a product of the second clock rate and the first time interval, to produce an error signal.