Wireless power transfer apparatus and method thereof
First Claim
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1. A receiving device to wirelessly receive power from a transmitting device, the receiving device comprising:
- a receiving antenna configured to wirelessly;
receive power at a first level, a scanning signal at a second level, and a radio-frequency (RF) command signal transmitted by the transmitting device, wherein the RF command signal indicates timings for the receiving device to associate and dissociate with the transmitting device, andtransmit a reflection signal in response to the scanning signal,wherein a ratio of a parameter of the reflection signal and a parameter of the scanning signal is used as a criterion to indicate to the transmitting devicewhether the receiving device is coupled to the transmitting device and isavailable to receive power at the first level; and
a control switch mechanism configured to, in response to the received RF command signal, associate and dissociate the receiving device with the transmitting device based on the timings in the RF command signal.
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Abstract
In accordance with various aspects of the disclosure, a method and apparatus is disclosed that includes features of a receiving antenna configured to wirelessly receive power transmitted by a transmitting device and arranged to associate or dissociate with the transmitting device.
40 Citations
19 Claims
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1. A receiving device to wirelessly receive power from a transmitting device, the receiving device comprising:
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a receiving antenna configured to wirelessly; receive power at a first level, a scanning signal at a second level, and a radio-frequency (RF) command signal transmitted by the transmitting device, wherein the RF command signal indicates timings for the receiving device to associate and dissociate with the transmitting device, and transmit a reflection signal in response to the scanning signal, wherein a ratio of a parameter of the reflection signal and a parameter of the scanning signal is used as a criterion to indicate to the transmitting device whether the receiving device is coupled to the transmitting device and is available to receive power at the first level; and a control switch mechanism configured to, in response to the received RF command signal, associate and dissociate the receiving device with the transmitting device based on the timings in the RF command signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A transmitting device comprising:
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a transmission antenna configured to transmit power wirelessly to multiple receivers; a controller configured to cause the transmission antenna to transmit power wirelessly in a frequency-multiplexed arrangement, and allocate an amount of power for transmission to at least one of the multiple receivers based on a priority scheme, wherein the controller is further configured to provide a command signal for transmission to the multiple receivers, wherein the command signal is to communicate timings of when at least one of the multiple receivers is to turn on and turn off; and a frequency generator electrically coupled to the transmission antenna and configured to generate a set of frequencies at which the power is transmitted via the transmission antenna, wherein the transmitting device is to transmit power to the receivers at a first power level and a scanning signal having a second power level, receive a reflection signal in response to the scanning signal, and determine a ratio of a parameter of the reflection signal and a parameter of the scanning signal, the ratio indicating whether at least one of the receivers is available to receive power from the transmitting device. - View Dependent Claims (9, 10, 11, 12, 19)
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13. A transmitting device comprising:
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two or more transmission antennas configured to transmit power wirelessly to multiple receivers; a controller configured to cause the two or more transmission antennas to transmit power wirelessly in a frequency-multiplexed arrangement, and allocate an amount of power for transmission to at least one of the multiple receivers based on a priority scheme, wherein the controller is further configured to provide a command signal for transmission to the multiple receivers, wherein the command signal is to communicate timings of when at least one of the multiple receivers is to turn on and turn off; and one or more frequency generators electrically coupled to the two or more transmission antennas and configured to generate a set of frequencies at which the power is transmitted via the two or more transmission antennas, wherein the transmitting device is to transmit power to the receivers at a first power level and a scanning signal having a second power level, receive a reflection signal in response to the scanning signal, and determine a ratio of a parameter of the reflection signal and a parameter of the scanning signal, the ratio indicating whether at least one of the receivers is available to receive power from the transmitting device. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification