Selective activation of field devices in low power wireless...

Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...

Reexamination Certificate

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Details

C370S341000, C455S414100

Reexamination Certificate

active

07986657

ABSTRACT:
A control system uses a wireless network to provided communication between a host computer and field devices. The field devices are normally maintained in a lower power or sleep state. Only field devices that will be involved in a communication with the host computer are turned On and maintained On until communication between the field devices and the host computer is completed.

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State Intellectual Property Office of People's Republic of China, The Details of the First Office Action; Feb. 12, 2010.

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