Method and apparatus for PTU detection of NFC devices

    公开(公告)号:US10771113B2

    公开(公告)日:2020-09-08

    申请号:US15089125

    申请日:2016-04-01

    Abstract: Embodiments related to systems, methods, and computer-readable media to enable a power transmit unit (PTU) device are described. In one embodiment a PTU comprises a transmit coil configured for wireless charging via magnetic coupling, a power delivery system coupled to the transmit coil, signal processing circuitry to detect harmonic distortion that is induced in the transmit coil by a device inside the near field of the transmit coil, and control circuitry configured to adjust an output power of the power amplifier when triggered by a detection of an Near Field Communications (NFC) device, a Radio Frequency Identification Device (RFID), or any other such device which may be damaged by the energy emitted from the transmit coil.

    Smart beamwidth adaptation in wireless head-mounted displays

    公开(公告)号:US10200148B1

    公开(公告)日:2019-02-05

    申请号:US15719057

    申请日:2017-09-28

    Abstract: An apparatus and related operating method of a mmWave WHMD, are provided. The apparatus utilizes beamforming information to determine direction information indicating a direction of a received signal from an external component that is connected to the apparatus via a VR data link. The apparatus selects and sets a current MCS that supports a data load of the VR data link. The apparatus, while maintaining the VR data link, determines a VR data link condition by a determination that a received signal is stronger or weaker than a predetermined signal strength level for the current MCS of the VR data link. When stronger, the processing circuitry is configured to signal a transceiver to widen a beam from a current beamwidth to a new wider beamwidth in a direction based on the direction information to maintain the current MCS and data load of the VR data link.

    Segmentation, handshaking, and access control solutions for Opendots technology

    公开(公告)号:US09985958B2

    公开(公告)日:2018-05-29

    申请号:US15081883

    申请日:2016-03-26

    CPC classification number: H04L63/083 H04W12/06

    Abstract: Apparatus, methods, and systems described herein are for segmentation, handshaking, and access control solutions for Opendots technology. One embodiment described a charging pad that includes a plurality of conductive strips, switches, and decipher circuitry. A switch is coupled to the plurality of conductive strips whereas the decipher circuitry is coupled to the plurality of conductive strips and the switch. In response to contact with one conductive strip of the plurality of conductive strips, the decipher circuitry determines whether a security password has been received. The switch allows a voltage higher than a threshold voltage level to be supplied to an external device if the security password is received by the decipher circuitry. However, the switch can also prevent a voltage higher than a threshold voltage level to be supplied to an external device if the security password is not received by the decipher circuitry.

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