Patent ID: 8170165
Filing Date: 2012-05-01
Classification: H03L,H04W,Y02D

Abstract:
1. A method for calibrating a second clock based on a first clock, the method comprising: (a) measuring a number L of counts, L>0, of the first clock during a first interval, wherein the second clock is stopped during the first interval; (b) measuring a number M(n) of counts, M(n)>0, of the second clock during a second interval, wherein the second interval corresponds in length to N counts, N>0, of the first clock; (c) applying filtering to the number M(n) of counts of the second clock to generate a filtered count F(n), F(n)>0; and (d) updating the second clock based on L, N, and F(n), wherein the updating of the second clock corresponds to a number T of counts, T>0, that would have registered had the second clock not been stopped.