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US 11,146,309 B2Granted
Power line communication device
AssigneeRenesas Electronics Corporation
InventorsKosuke Shibuya, Yoshitaka Shibuya
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Abstract
The power line communication device detects inverter noise from the voltage waveforms of the power line, and executes the output of the transmission signal in a period in which it is determined that the signal amplitude of the transmission signal in the transmission processing unit exceeds a predetermined value from the output amplitude of the inverter noise, and stops the output of the transmission signal in other periods.
Claims5
A power line communication device comprising:
- an inverter noise detection processing unit for detecting inverter noise by a DC/AC inverter of the power line;
- a half-wavelength shift processing unit for generating a half-wavelength shift signal in which a phase corresponding to a half-wavelength of the inverter noise is shifted with respect to a received signal from the power line;
- an addition unit for generating an addition signal in which the received signal and the half-wavelength shift signal are added;
- a reception processing unit for acquiring received data based on the addition signal;
- a transmission processing unit for generating a transmission signal to be output to a power line based on the received data acquired by the reception processing unit;
- a transmission position determination unit for determining a transmission period of the transmission signal based on the half-wavelength of the inverter noise;
- and
- an output unit for outputting the transmission signal in the transmission period.
5 more elements
Dependencies are inferred from the claim text.