Wireless power and data transmission system, power transmitting apparatus, and power receiving apparatus

摘要

A power transmitting apparatus is usable for wireless power and data transmission. The power transmitting apparatus includes a power transmitting section configured to transmit power and data to be transmitted as being converted into a pulse train; and a control section configured to control the power transmitting section such that a change of the power caused by superimposition of the data is decreased.

主权项

1. A power transmitting apparatus usable for wireless power and data transmission, the power transmitting apparatus comprising:
a power transmitting section configured to transmit a pulse train including a plurality of pulses on which power and data to be transmitted are superimposed; and a control section configured to control the power transmitting section such that a change of the power caused by a superimposition of the data is decreased, wherein the control section includes:
a driving voltage control section that changes an amplitude of the pulse train in accordance with a value of the data,a correction value calculation section that calculates a correction value such that, when the amplitude of the pulse train is changed in accordance with the value of the data, the change of the power to be transmitted caused by the change of the amplitude is decreased, and the power transmitting section includes:
a pulse width modulation section that, in accordance with the correction value, changes a pulse width of the pulse train such that the change of the power to be transmitted caused by the change of the amplitude is decreased; anda radio frequency modulation section that modulates the frequency of the pulse train transmitted from the pulse width modulation section, wherein the radio frequency modulation section comprises an oscillation circuit.