Clock recovery using a double-exponential smoothing process

Details Clock recovery using a double-exponential smoothing process Clock recovery using a double-exponential smoothing process

2006-03-28

2006-03-28

Lee, Thomas (Department: 2115)

Electrical computers and digital processing systems: support

Synchronization of clock or timing signals, data, or pulses

C375S354000, C327S141000

Reexamination Certificate

active

07020791

ABSTRACT:
A system and method for synchronizing a local clock to a reference clock using a linear model of the clock error between the local clock and the reference clock is disclosed. In one embodiment, a double-exponential smoothing process is used in conjunction with the linear model to estimate a frequency offset by which the frequency of an oscillator of the local clock is adjusted. Also disclosed herein is a phased-lock loop (PLL) adapted to synchronize a local clock with a reference clock using the double-exponential smoothing process, as well as a system implementing the PLL for timing the playout of data received from a transmitter.

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