| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply technique which selects only a specific user as receivable of power.SOLUTION: A frequency modulated or a phase modulated electric signal S2 is generated in a wireless power supply apparatus 200 in accordance with a transmission side code CODE1 predetermined with a wireless power receiving apparatus 300. The electric signal S2 is transmitted from a transmission coil 16 and an electric power signal S1 is generated with any of electric field, magnetic field, and electromagnetic field included therein. The wireless power receiving apparatus 300 receives the electric power signal S1 using a receiving coil 20. A controller 26 varies the impedance of a resonant circuit 24 formed by the receiving coil 20 and a resonant capacitor 22, based on a reception side code CODE2 to be coincident to the transmission side code CODE1. |
