Methods and systems for accurate time-keeping on metering...

Horology: time measuring systems or devices – Combined with disparate device

Reexamination Certificate

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C368S047000, C340S870020

Reexamination Certificate

active

07961554

ABSTRACT:
Methods and systems for providing accurate time-keeping on battery-powered communication devices used in AMI systems, mesh networks, and multi-channel radio networks. One embodiment allows the use of low power (and low cost) crystals in battery-powered endpoints by periodically correcting the poor timing of these crystals using communications with a nearby, non-battery-powered device. Such communications allow the battery-powered devices to align their timing with that of their non-battery neighbors, among other things.

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