Wireless charging system and related method for transmitting data
AssigneeWistron Corporation
InventorYi-Sheng Kao
Life of this patent
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Abstract
The invention discloses a wireless charging system for transmitting data. The wireless charging system includes a charging device for wirelessly transmitting a source signal and adjusting a current corresponding to the source signal according to a transmitted datum, and a receiving device which includes a first coil for receiving the source signal according to the electromagnetic effect and generating a corresponding AC current signal, and an output module for obtaining the transmitted datum according to the AC current signal.
Claims9
A wireless charging system for transmitting data comprises:
- a charging device for wirelessly transmitting a source signal and adjusting a current value corresponding to the source signal according to a transmitted datum;
- and
- a receiving device comprising:
- a first coil for receiving the source signal according to electromagnetism and accordingly generating an AC current signal;
- and
- an output module comprising:
- a rectifying module, electrically connected to the first coil for rectifying the AC current signal to generate a DC current signal;
- a transforming module, for transforming the DC current signal into a digital signal to retrieve the transmitted datum;
- and
- a stabilizing module for stabilizing the DC current signal, comprising:
- an up-loop switch, comprising an input end coupled to a power supply, an output end and a control end;
- a down-loop switch, comprising an input end coupled to the output end of the up-loop switch, an output end coupled to the ground and a control end;
- an oscillating module, comprising a capacitor and a inductor;
- and
- a stabilizing logic controller, for outputting a control signal to the control end of the up-loop switch and the control end of the down-loop switch according to terminal voltage of both ends of the inductor, so as to switch on or off the up-loop switch and the down-loop switch.
A data transmitting method for a wireless charging system, wherein the wireless charging system comprises a charging module and a receiving module, the data transmitting method comprising:
- the charging module coupled to the receiving module via an interacting magnetic field, so as to transmit a source signal to the receiving module in a radio frequency way;
- the charging module adjusting a current value corresponding to the current signal according to a transmitted datum, so as to transmit the transmitted datum to the receiving module via the source signal;
- and
- the receiving module receiving the source signal via electromagnetism, so as to retrieve the transmitted datum within the source signal;
- wherein the receiving module comprises:
- a first coil for receiving the source signal according to electromagnetism and accordingly generating an AC current signal;
- and
- an output module comprising:
- a rectifying module, electrically connected to the first coil for rectifying the AC current signal to generate a DC current signal;
- a transforming module, for transforming the DC current signal into a digital signal to retrieve the transmitted datum;
- and
- a stabilizing module for stabilizing the DC current signal, comprising:
- an up-loop switch, comprising an input end coupled to a power supply, an output end and a control end;
- a down-loop switch, comprising an input end coupled to the output end of the up-loop switch, an output end coupled to the ground and a control end;
- an oscillating module, comprising a capacitor and a inductor;
- and
- a stabilizing logic controller, for outputting a control signal to the control end of the up-loop switch and the control end of the down-loop switch according to terminal voltage of both ends of the inductor, so as to switch on or off the up-loop switch and the down-loop switch.
Dependencies are inferred from the claim text.