Power transmission control device, power transmission...

Details Power transmission control device, power transmission... Power transmission control device, power transmission...

2008-06-27

2010-10-12

Fureman, Jared J (Department: 2836)

Electrical transmission or interconnection systems

Electromagnet or highly inductive systems

C320S108000

Reexamination Certificate

active

07812481

ABSTRACT:
A power transmission control device provided in a power transmission device of a non-contact power transmission system includes a drive clock signal generation circuit that generates a drive clock signal specifying a drive frequency of a primary coil, a driver control circuit that generates a driver control signal based on the drive clock signal, and outputs the driver control signal to a transmission driver, a waveform detection circuit that detects a change in waveform of an induced voltage signal of the primary coil, and a control circuit that performs foreign object detection based on a detection result of the waveform detection circuit. The drive clock signal generation circuit outputs the drive clock signal set at a foreign object detection frequency during foreign object detection, the foreign object detection frequency being a frequency differing from a normal power transmission frequency.

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U.S. Appl. No. 12/163,266, filed Jun. 27, 2008, in the name of Ken Iisaka et al.
U.S. Appl. No. 12/167,812, filed Jul. 3, 2008, in the name of Mikimoto Jin et al.

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