Telecommunications – Transmitter and receiver at separate stations – Near field
Reexamination Certificate
2008-02-20
2011-11-15
Phu, Sanh D (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Near field
C455S041200, C455S127100, C455S572000, C455S573000, C320S108000
Reexamination Certificate
active
08060011
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 that specifies 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 adjusting circuit that outputs a waveform adjusting signal of an induced voltage signal of the primary coil, a pulse width detection circuit that receives the waveform adjusting signal and the drive clock signal and detects pulse width information relating to the waveform adjusting signal, and a control circuit that detects a change in secondary-side load based on the detected pulse width information.
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Oliff & Berridg,e PLC
Phu Sanh D
Seiko Epson Corporation
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