Inbound communications using electricity distribution network
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United States of America Patent
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Nov 16, 1993
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N/A
app pub date -
Dec 17, 1991
filing date -
Dec 17, 1991
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Abstract
Signals carried inbound on an electricity distribution network are detected by extracting electrical current information from a waveform of the electricity distribution network, and digitally filtering the electrical current information, thereby forming a digital waveform, to extract signal information contained in the electrical current information. A reference waveform is constructed from a portion of the digital waveform, and the signal information is detected by comparing portions of the digital waveform with corresponding portions of the reference waveform.
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