Patent ID: 7920663
Filing Date: 2011-04-05
Classification: H03L

Abstract:
1. A method of adjusting a local frequency source, comprising: receiving first frequency comparison data at a second device from a first device via a packet data network, the first device comprising a first frequency source and a first AC mains sampler, the first frequency comparison data comparing a first frequency of the first frequency source and a second frequency from the first AC mains sampler; comparing, at the second device, a second frequency comparison data and the received first frequency comparison data, the second device comprising a second frequency source and a second AC mains sampler, the second frequency comparison data being generated from comparing a third frequency of the second frequency source and a fourth frequency of the second AC mains sampler; and adjusting the third frequency of the second frequency source based, at least in part, on the comparison of the second frequency comparison data and the received first frequency comparison data, wherein adjusting includes aligning the third frequency of the second frequency source to the first frequency of the first frequency source associated with the received first frequency comparison data.