Patent ID: 8097984
Filing Date: 2012-01-17
Classification: G01R,H02J,H04B

Abstract:
1. An inductive power supply to supply operating wireless power to a remote device, said inductive power supply comprising: inductive field generating circuitry; frequency control circuitry electrically connected to said inductive field generating circuitry, said frequency control circuitry capable of operating said inductive field generating circuitry at an operating frequency; reflected impedance sensing circuitry to sense a characteristic of power in said inductive power supply; said characteristic being indicative of a reflected impedance of said remote device; identification circuitry to determine an identification profile of said remote device as a function of said sensed characteristic of said reflected impedance sensing circuitry, said identification profile including one or more resonant frequencies; a memory storing a common identification profile of a plurality of known remote devices, wherein said common identification profile includes one or more resonant frequencies; and power supply control circuitry for supplying operating wireless power to said remote device if said remote device has an identification profile corresponding with said common identification profile.