System for transmitting digital data over an electricity power line
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United States of America Patent
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Sep 14, 1993
Grant Date -
N/A
app pub date -
Mar 5, 1992
filing date -
Mar 18, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a communications system suitable for application directly to a national electricity grid and comprising a transmitter for transmitting data over a plurality of transmission frequency bands, a receiver for receiving messages over any one of the frequency bands, means for evaluating the transmission quality of each of the frequency bands, and a way to adapt the system for transmitting and receiving over the frequency band that has optimum transmission quality. The system of the invention may be applied, in particular, to remote reading of electricity meters.
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