SEMICONDUCTOR DEVICE
    2.
    发明申请

    公开(公告)号:US20180076620A1

    公开(公告)日:2018-03-15

    申请号:US15438483

    申请日:2017-02-21

    摘要: A semiconductor device includes a first circuit unit, comprising a first buffer, a second buffer, and a first processing unit, connected to a first power supply system, and a second circuit unit, comprising a third buffer, connected to a second power supply system different from the first power supply system. The semiconductor device includes a first oscillation signal generating circuit connected to the first power supply system, and a second oscillation signal generating circuit connected to the second power supply system. A first oscillation signal generated by the first oscillation signal generating circuit is input to the first buffer. A second oscillation signal generated by the second oscillation signal generating circuit is input to the second buffer through the third buffer. The first buffer selectively outputs the input first oscillation signal and the second buffer selectively outputs the input second oscillation signal based on a value of a control signal.

    ELECTRONIC APPARATUS, POWER SUPPLY SYSTEM AND POWER SUPPLY CONTROL METHOD

    公开(公告)号:US20230344277A1

    公开(公告)日:2023-10-26

    申请号:US18214565

    申请日:2023-06-27

    IPC分类号: H02J50/20 H02J50/70 H02J50/40

    摘要: A power supply system includes a first power supply apparatus configured to perform power transmission by an electromagnetic wave having a first frequency band, and a second power supply apparatus configured to perform power transmission by an electromagnetic wave having a second frequency band. The first power supply apparatus and the second power supply apparatus are provided so as to be 2H×{tan(θ)} or greater distant from each other, when each of the first power supply apparatus and the second power supply apparatus is provided in height H from a floor surface, where H is a positive number, and when a direction of a maximum value ±3 dB is in a range from −θ to +θ in a case where a perpendicular downward direction from each position is a standard.

    WIRELESS POWER TRANSMISSION DEVICE, WIRELESS POWER TRANSMISSION SYSTEM, AND WIRELESS POWER TRANSMISSION METHOD

    公开(公告)号:US20200373661A1

    公开(公告)日:2020-11-26

    申请号:US16994060

    申请日:2020-08-14

    摘要: A wireless power transmission device includes a power transmitter to transmit a wireless power signal through a plurality of first antennas, a propagation path estimation unit to estimate first propagation path information characterizing a propagation path between the plurality of first antennas and a predetermined antenna, a propagation path extraction unit to extract second propagation path information characterizing a propagation path passing through a moving body, based on at least one of a difference on a time axis of a plurality of pieces of the first propagation path information each acquired at different times, and filtering on a frequency axis, a weight calculator to calculate a weight vector that determines a directivity of a combined power transmission beam formed by the plurality of first antennas, and a controller to control an amplitude and a phase of the wireless power signal inputted to each of the plurality of first antennas.

    ELECTRONIC APPARATUS AND METHOD
    6.
    发明申请

    公开(公告)号:US20200076241A1

    公开(公告)日:2020-03-05

    申请号:US16299479

    申请日:2019-03-12

    IPC分类号: H02J50/23 G06F1/16

    摘要: According to one embodiment, an electronic apparatus includes a power transmitter, detect circuitry and control circuitry. The power transmitter is configured to transmit a power by an electromagnetic wave of a power transmission frequency band according to a power transmission period. The detect circuitry is configured to detect a power in a frequency band different from the power transmission frequency band. The control circuitry is configured to determine the power transmission period based on a first threshold value, a second threshold value, a third threshold value and a fourth threshold value.

    ELECTRONIC APPARATUS AND METHOD
    8.
    发明公开

    公开(公告)号:US20230412005A1

    公开(公告)日:2023-12-21

    申请号:US18179134

    申请日:2023-03-06

    发明人: Toshiya MITOMO

    摘要: An electronic apparatus, according to one embodiment, that is capable of wireless power transfer to a power receiver that transmits a wireless signal, comprising: N antenna elements; N wireless signal processing circuitries configured to acquire analog signals, based on wireless signals received by the N antenna elements; a first signal processing circuitry configured to acquire a first digital signal, based on a first analog signal that is the analog signal acquired by a first wireless signal processing circuitry; a first selector configured to select one of second analog signals that are the analog signals acquired by (N−1) second wireless signal processing circuitries; a second signal processing circuitry configured to acquire a second digital signal, based on the second analog signal selected by the first selector; and a controller configured to estimate a channel from the power receiver, based on the first digital signal and the second digital signal.

    WIRELESS POWER-TRANSMISSION APPARATUS AND WIRELESS POWER-TRANSMISSION METHOD

    公开(公告)号:US20220302764A1

    公开(公告)日:2022-09-22

    申请号:US17832549

    申请日:2022-06-03

    IPC分类号: H02J50/23 H02J50/40 H04B7/06

    摘要: A wireless power-transmission apparatus includes at least one antenna element disposed at a specific position in a three-dimensional space having a predetermined shape and size, to transmit a power transmission beam, an acquirer to acquire an inclination angle of the antenna element to a plane direction of a reference plane and a height of the antenna element to the reference plane, and a controller to control at least one of antenna power and a power transmission direction of the power transmission beam so that interference power of the power transmission beam toward an outside of the three-dimensional space becomes equal to or smaller than a predetermined allowable value when the antenna element is disposed at the acquired inclination angle and height.

    ELECTRONIC APPARATUS, POWER SUPPLY SYSTEM AND POWER SUPPLY CONTROL METHOD

    公开(公告)号:US20210296935A1

    公开(公告)日:2021-09-23

    申请号:US17015866

    申请日:2020-09-09

    IPC分类号: H02J50/20 H02J50/70

    摘要: According to one embodiment, an electronic apparatus includes power transmission circuitry, and detection circuitry. The power transmission circuitry transmits power by an electromagnetic wave with a first frequency band. The detection circuitry receives a reception signal and performs carrier sense with a second frequency band different from the first frequency band. The detection circuitry includes interference avoidance circuitry that eliminates a signal having a third frequency band which is a part of the second frequency band from the reception signal.