Signal transmission device and signal transmission method
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United States of America Patent
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Aug 28, 2018
Grant Date -
Jan 11, 2018
app pub date -
Mar 4, 2015
filing date -
Mar 4, 2015
priority date (Note) -
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Abstract
A transponder includes a multiplexing section, optical transmitters, optical receivers, an extracting section, and a warning monitor section, wherein the extracting section includes a first signal extracting unit for extracting reception data, a second signal extracting unit for extracting reception data, and a reception signal switching section. When carrier signals are in a link-establishable state, the reception signal switching section supplies reception electric signals generated by the optical receivers to the first signal extracting unit and outputs the reception data. When a carrier signal is in a non-link-establishable state, the reception signal switching section supplies a reception electric signal generated by an optical receiver using a carrier signal in the link-establishable state to the second signal extracting unit and outputs the reception data extracted by the second signal extracting unit.
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