Uni-directional protocol
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United States of America Patent
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Oct 16, 2001
Grant Date -
N/A
app pub date -
Mar 30, 1999
filing date -
Mar 30, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention provides a unidirectional protocol for communicating data from a plurality of utility meters and a meter adapted to carry out this protocol. The meters are adapted to monitor and measure the respective utility parameters which may include those for gas, water, electric or other utilities, and wirelessly download the information to a meter reading device. The protocol basically includes a synchronization pattern followed by the desired information. For a valid transmission, the synchronization pattern and subsequent data are provided in a first transmission sequence, which is immediately repeated after the end of the first sequence. Preferably, a bit is toggled during the retransmission of the transmission sequence for security.
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