RESONATING BACKSCATTER RADIO SYSTEM WITH PULSE POSITION MODULATION

    公开(公告)号:US20240354543A1

    公开(公告)日:2024-10-24

    申请号:US18685630

    申请日:2021-08-24

    发明人: Shousheng HE

    摘要: A backscatter radio system having a transceiver module and a transponder. The transceiver module is configured to generate and transmit a radio frequency pulse signal with Pulse Position Modulation (PPM). The generated radio frequency pulse signal includes a power and information transferring pulse and a time reference pulse within a dual symbol duration comprising a first and a second symbol periods. The power and information transferring pulse enables a power injection to a rectifier circuit in the transponder and the time reference pulse enables an excitation of a resonance signal in a resonance circuit in the transponder. A response radio frequency pulse signal with PPM is generated using the resonance signal generated in the resonance circuit with a time offset such that the first and second symbol periods are separated in the time domain.

    Method and apparatus for controlling wireless power transmission

    公开(公告)号:US12126188B2

    公开(公告)日:2024-10-22

    申请号:US18355982

    申请日:2023-07-20

    摘要: A wireless power transmitter for transmitting power to a wireless power receiver, including a controller configured to determine whether a foreign object is present in a charging area of the wireless power transmitter; and a transmission part configured to transmit wireless power according to whether the foreign object is present, wherein the controller receives a signal including an FOD status packet from the wireless power receiver, and determines whether the foreign object is present in the charging area of the wireless power transmitter based on the FOD status packet; wherein the controller is set to be operated in a first power transfer mode when determining that the foreign object is present in the charging area, or to be operated in a second power transfer mode when determining that the foreign object is not present in the charging area; and wherein the controller determines whether the foreign object is present in the charging area based on information other than information included in the FOD status packet, while being operated in any one of the first power transfer mode and the second power transfer mode.

    Wireless power transfer system for listening devices with expandable case

    公开(公告)号:US12100983B2

    公开(公告)日:2024-09-24

    申请号:US17514630

    申请日:2021-10-29

    申请人: NuCurrent, Inc.

    发明人: Dennis Kapolnek

    摘要: A wireless power transfer system is provided for mobile charging of one or more listening devices. A case configured for attachment to a mobile electronic device having a wireless power transfer antenna includes a first plate and a second plate expandably connected to the first plate, such that when expanded, the first plate and a second plate define a hollow for each of the listening devices. Each hollow is shaped and located to hold a listening device in a coupling position with the wireless power transfer antenna of the mobile electronic device when the case is mounted to the mobile electronic device. An attachment may be used to mount the case to the mobile electronic device.

    Method and apparatus for controlling wireless power transmission

    公开(公告)号:US12095288B2

    公开(公告)日:2024-09-17

    申请号:US18355887

    申请日:2023-07-20

    摘要: A wireless power receiver for receiving power from a wireless power transmitter, including a receiving part configured to receive wireless power from the wireless power transmitter; and a main controller in which a foreign object detection status packet including at least one of a reference quality factor and a reference peak frequency is stored, wherein the main controller transmits the foreign object detection status packet to the wireless power transmitter; wherein the main controller receives a NAK response from the wireless power transmitter indicating that the foreign object is present, or receives an ACK response from the wireless power transmitter indicating that the foreign object is not present; and wherein the receiving part receives a first power from the wireless power transmitter according to the received NAK response, or receives a second power greater than the first power from the wireless power transmitter according to the received ACK response.

    Power supply system, power supply device, and power supply method

    公开(公告)号:US12095286B2

    公开(公告)日:2024-09-17

    申请号:US17759395

    申请日:2021-01-06

    摘要: To provide a power supply system, a power device, and a power method capable of wireless power supply with a simple configuration.
    A power supply system includes a first infrared output unit provided on a first object, the first infrared output unit having a first directivity configured to output a first infrared ray in a first direction in which a second object that relatively moves with respect to the first object is situated, the first infrared output unit being configured to output the first infrared ray, a reflector provided on the second object, the reflector being configured to reflect the first infrared ray by retroreflection, a second infrared output unit provided on the second object, the second infrared output unit having a second directivity configured to output a second infrared ray in a second direction in which the first object that relatively moves is situated, the second infrared output unit being configured to output the second infrared ray by using power received by wireless power supply, and a power supply provided on the first object, the power supply being configured to, in a case of receiving a reflected infrared ray of the first infrared ray reflected by the reflector or in a case of receiving the second infrared ray, output a beam in an arrival direction of the reflected infrared ray or the second infrared ray.

    Wireless power receiving device and wireless power transmitting device

    公开(公告)号:US12095284B2

    公开(公告)日:2024-09-17

    申请号:US18018679

    申请日:2021-07-30

    摘要: A wireless power receiving device according to one embodiment of the present specification comprises: a power pickup circuit for receiving wireless power from a wireless power transmitting device; and a communication/control circuit for communicating with the wireless power transmitting device by using in-band communication using a power signal of the wireless power and/or out-band communication, which is wireless communication that differs from the in-band communication, and for controlling the reception of the wireless power, wherein the communication/control circuit terminates the connection of the out-band communication on the basis of the removal of the power signal from the wireless power transmitting device in a state in which the connection of the wireless power transmitting device and the out-band communication is established.