Method for transmitting and receiving signals over transmission power lines
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United States of America Patent
Stats
-
Jan 29, 1991
Grant Date -
N/A
app pub date -
Oct 10, 1989
filing date -
Oct 18, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A transmission signal sending and receiving method using the steps of setting the reference channel and data channels in each cycle of the AC voltage wave for transmission in the sending and receiving means, superposing the reference transmission signal onto the reference channel and the modulated data transmission signals onto the data channels in the sending means, receiving the reference transmission signal and data transmission signals by being separated from the AC voltage wave for transmission in the receiving means, and monitoring data transmission signals by comparing the level and phase of the reference transmission signal received by the reference channel with those of the data transmission signals received in the data channels, and thereby comparing the reference transmission signal with the data transmission signals received in each cycle of the AC voltage wave for transmission.
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