Power line communications system combining high bitrate and low bitrate transmissions
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United States of America Patent
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Issued Date -
Apr 8, 2004
app pub date -
Jan 8, 2003
filing date -
Jan 8, 2002
priority date (Note) -
Abandoned
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Abstract
A power line communication system in which communication signals, e.g. high bitrate modulated radio frequency carriers, and electrical appliance control signals, which have a low bitrate, also modulate radio frequency carriers at frequencies of the same order as the frequencies of the high bitrate modulated carriers are applied to the power line which energizes the appliances. Transceivers are coupled to the power line, to communications devices and to appliance control devices for receiving the carriers and supplying demodulated signals to the respective devices and for supplying carriers to the power line modulated by signals received from the respective devices.
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