POWER SUPPLY DEVICE AND METHOD, AND PROGRAM
1 Assignment
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Accused Products
Abstract
A control unit controls a reader/writer to generate a vehicle ID read signal that is formed of a high frequency signal and used to read a vehicle ID recorded in an ID circuit, and supply the signal to a high-pass filter. The read signal or a write signal formed of the high frequency signal is superimposed on a power supply line and supplied to the high-pass filter. The high-pass filter supplies the vehicle ID read signal formed of the high frequency signal to the ID circuit. On the basis of the read signal, the ID circuit reads the vehicle ID stored in an IC built in the own circuit and transmits it as a response signal to a charger along a reverse path. An authentication part of the control unit turns on a selector switch when the vehicle ID being the response signal is determined to be legitimate.
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Citations
16 Claims
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1-8. -8. (canceled)
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9. A power supply device comprising:
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a switching unit which turns on/off electric power supplied to a device through a power supply line; a reader/writer unit which reads a device ID from a storage unit included in the device by means of load modulation using a high frequency signal through the power supply line; and a control unit which performs control to turn on the switching unit and supply electric power to the device through the power supply line when the device ID having been read by the reader/writer unit is authenticated.
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10. A power supply device comprising:
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a power supply unit which supplies electric power from a commercial power supply to a device through a power supply line; a switching unit which turns on/off electric power supplied from the power supply unit to the device through the power supply line; a reader/writer unit which reads a device ID from a storage unit included in the device by means of load modulation using a high frequency signal through the power supply line, or writes information into the storage unit included in the device; an authentication part which performs authentication on the device ID having been read by the reader/writer unit; and a control unit which performs control to turn on the switching unit and supply electric power from the power supply unit to the device through the power supply line when the device ID is authenticated by the authentication part. - View Dependent Claims (11, 12, 13, 14)
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15. A power supply method comprising:
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a power supply step in which electric power is supplied from a commercial power supply to a device through a power supply line by a power supply unit which supplies electric power from the commercial power supply to the device through the power supply line; a switching step in which electric power supplied from the power supply unit to the device through the power supply line is turned on/off by a switching unit which turns on/off electric power supplied from the power supply unit to the device through the power supply line; a read/write step in which a device ID is read from a storage unit of the device by means of load modulation using a high frequency signal through the power supply line or information is written into the storage unit of the device by a reader/writer unit which reads the device ID from the storage unit of the device by means of load modulation using the high frequency signal through the power supply line or writes the information into the storage unit of the device; an authentication step in which authentication is performed on the device ID having been read by the process performed in the read/write step, the authentication step being performed by an authentication part which performs authentication on the device ID having been read by the reader/writer unit; and a control step in which control is performed to turn on the process performed in the switching step and supply electric power to the device through the power supply line by the process performed in the power supply step when the authentication is granted by the process performed in the authentication step, the control step being performed by a control unit which performs control to turn on the switching unit and supply electric power from the power supply unit to the device through the power supply line when the authentication is granted by the authentication part.
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16. A program which causes a computer controlling a power supply device to execute a process comprising:
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a power supply step in which a power supply unit supplies electric power from a commercial power supply to a device through a power supply line; a switching step in which a switching unit turns on/off electric power supplied to the device through the power supply line by the process performed in the power supply step; a read/write step in which a reader/writer unit reads a device ID from a storage unit of the device by means of load modulation using a high frequency signal through the power supply line or writes information into the storage unit of the device; an authentication step in which an authentication part performs authentication on the device ID having been read by the process performed in the read/write step; and a control step in which a control unit performs control to turn on the process performed in the switching step and supply electric power to the device through the power supply line by the process performed in the power supply step when the authentication is granted by the process performed in the authentication step, wherein the power supply device includes; the power supply unit which supplies electric power from the commercial power supply to the device through the power supply line; the switching unit which turns on/off electric power supplied from the power supply unit to the device through the power supply line; the reader/writer unit which reads the device ID from the storage unit of the device by means of load modulation using the high frequency signal through the power supply line or writes the information into the storage unit of the device; the authentication part which performs authentication on the device ID having been read by the reader/writer unit; and the control unit which performs control to turn on the switching unit and supply electric power from the power supply unit to the device through the power supply line when the authentication is granted by the authentication part.
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Specification