POWER LINE COMMUNICATION APPARATUS AND CONNECTING DEVICE
First Claim
1. A power line communication apparatus that superimposes a signal having a first frequency on power having a second frequency lower than the first frequency, comprising.a first connector to which the power is input;
- a communication circuit that superimposes the signal on the power input to the first connector;
a power supply circuit that supplies the power input to the first connector to the communication circuit;
a second connector that outputs the power input to the first connector to the outside of the power line communication apparatus; and
a single filter that has impedance characteristics in which impedance corresponding to the first frequency is higher than impedance corresponding to the second frequency,wherein the first connector is connected to the power supply circuit through the single filter, and the first connector is connected to the second connector through the single filter.
2 Assignments
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Accused Products
Abstract
A cable connecting device for power line communication includes: a first wiring line 231 and a second wiring line 232 through which AC power is capable of being supplied; a power plug 120 which is electrically connected to the first wiring line 231 and the second wiring line 232 and whose wiring lines are capable of being supplied with AC power; an Ethernet port 110 through which a communication signal is capable of being input and output; a power line communication modem 220 that is connected to the Ethernet port 110 and that is connected to the second wiring line 232 through which a communication signal is transmitted by using AC power input to the power plug 120 through the first wiring line 231 between the power plug 120 and the Ethernet port 110; a filter 210 disposed on the first wiring line 231 and having high impedance in at least a frequency band used for power line communication rather than a frequency band used for AC power; and connectors 101 to 104 which axe electrically connected to the first wiring line 231 between the filter 210 and the power line communication modem 220 and to which AC power from the first wiring line 231 is capable of being supplied.
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Citations
18 Claims
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1. A power line communication apparatus that superimposes a signal having a first frequency on power having a second frequency lower than the first frequency, comprising.
a first connector to which the power is input; -
a communication circuit that superimposes the signal on the power input to the first connector; a power supply circuit that supplies the power input to the first connector to the communication circuit; a second connector that outputs the power input to the first connector to the outside of the power line communication apparatus; and a single filter that has impedance characteristics in which impedance corresponding to the first frequency is higher than impedance corresponding to the second frequency, wherein the first connector is connected to the power supply circuit through the single filter, and the first connector is connected to the second connector through the single filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A connecting device for a power line communication apparatus that superimposes a signal having a first frequency on power having a second frequency lower than the first frequency, comprising:
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a first connector to which the power is input; a power supply circuit that supplies the power input to the first connector to a communication circuit that superimposes the signal on the power, a second connector that outputs the power input to the first connector to the outside of the power line communication apparatus, and a single filter has impedance characteristics in which impedance corresponding to the first frequency is higher than impedance corresponding to the second frequency, wherein the first connector is connected to the power supply circuit through the single filter, and the first connector is connected to the second connector through the single filter.
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Specification