Inbound communications using electricity distribution network
First Claim
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1. A method of detecting signals carried inbound on an electricity distribution network, comprising the steps of:
- extracting electrical current information from a waveform of the electricity distribution network;
digitally thereby forming a digital waveform, to extract signal information contained in said electrical current information;
constructing a reference waveform from a portion of the digital waveform; and
detecting the signal information by comparing portions of the digital waveform with corresponding portions of the reference waveform.
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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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Citations
37 Claims
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1. A method of detecting signals carried inbound on an electricity distribution network, comprising the steps of:
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extracting electrical current information from a waveform of the electricity distribution network; digitally thereby forming a digital waveform, to extract signal information contained in said electrical current information; constructing a reference waveform from a portion of the digital waveform; and detecting the signal information by comparing portions of the digital waveform with corresponding portions of the reference waveform. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification