Antenna calibration apparatus and antenna calibration method

    公开(公告)号:US12028118B2

    公开(公告)日:2024-07-02

    申请号:US17682861

    申请日:2022-02-28

    CPC classification number: H04B17/11 H04B17/21

    Abstract: This application provides an antenna calibration apparatus and an antenna calibration method. The antenna calibration apparatus includes: l antennas; l antenna filters, where first ends of the l antenna filters are respectively connected to the l antennas; l radio frequency links, respectively connected to second ends of the l antenna filters; and a calibration circuit, connected to each of the second ends of the l antenna filters, and configured to: send or receive a first calibration signal through a position between each antenna filter in the l antenna filters and a radio frequency link connected to the second end of each antenna filter; and calibrate each antenna based on the first calibration signal.

    Antitheft Method for Mobile Terminal and Apparatus

    公开(公告)号:US20190215696A1

    公开(公告)日:2019-07-11

    申请号:US16333136

    申请日:2016-09-13

    Abstract: In an antitheft method for a mobile terminal that relates to the field of communications technologies, a baseband processor detects integrity of an operating system running on an application processor, generates a short message service (SMS) message when the operating system has no integrity, and transfers the SMS message to the application processor. The application processor controls a display to display the SMS message in order to inform a user that the operating system of the mobile terminal is damaged. In a scenario in which a mobile terminal is stolen and an operating system is maliciously tampered with, according to the solution provided in this application, an SMS message is used to prompt a user, thereby improving security of the mobile terminal.

    Audio Control Method and Electronic Device

    公开(公告)号:US20210397686A1

    公开(公告)日:2021-12-23

    申请号:US17290124

    申请日:2019-10-30

    Abstract: A method includes receiving a first audio signal when an electronic device is locked, where the first audio signal includes a first voice signal of a user, and the first voice signal includes a keyword for requesting the electronic device to perform a first operation, performing voiceprint recognition on the first audio signal to determine a score of the first audio signal, unlocking the electronic device and performing the first operation when the score is greater than or equal to a first threshold, prompting the user to perform security authentication in a manner other than a voice manner when the score is less than the first threshold and greater than a second threshold, and unlocking the electronic device and performing the first operation when the security authentication performed by the user succeeds.

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