Data receiving method for receiving data through predetermined clear zones of a powerline
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United States of America Patent
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Sep 5, 2000
Grant Date -
N/A
app pub date -
Aug 4, 1995
filing date -
Aug 4, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A data receiving method used in a powerline environment is used for converting a modulated signal received from a powerline over a data period within a predetermined clear zone after one zero crossing point of the powerline into a data bit. Each data period includes at least one predetermined bit period. The modulated signal is received within the bit period of one data period. The method includes: detecting zero crossing points of the powerline and generating a SYNC signal when a zero crossing point is detected; converting signals contained within the bit period of a data period after each SYNC signal into digital samples; generating an adaptive threshold according to the digital samples converted from the bit periods of a plurality of data periods; and converting the digital samples converted from the modulated signal into the data bit by using the adaptive threshold.
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