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    • 2. 发明申请
    • DUAL FUNCTION MAGNET ACTUATOR
    • WO2020164696A1
    • 2020-08-20
    • PCT/EP2019/053529
    • 2019-02-13
    • HUAWEI TECHNOLOGIES CO., LTD.MAENPAA, Ossi
    • MAENPAA, Ossi
    • H01F7/02H01F7/06H01F7/16H04R11/02H04R9/06H02K33/16B06B1/04G06F3/01
    • A magnet actuator (1) comprising a first housing arrangement (2) comprising a first housing (2a), a first balancing magnet (2b), a first coil (2c) partially surrounding the first balancing magnet (2b), and a first suspension means (2d), as well as a second housing arrangement (3) comprising a second housing (3a), a second balancing magnet (3b), a second coil (3c) partially surrounding the second balancing magnet (3b), and a second suspension means (3d). A main magnet (4) is arranged between the first suspension means (2d) and the second suspension means (3d), and is fixedly connected to the second suspension means (3d). A repulsive force (F C 2) counteracts the attractive force (F C 1) generated between the first housing (2a) and the main magnet (4) such that the first housing arrangement (2) and the main magnet (4) are maintained in a force equilibrium state. An attractive force (F C 4) counteracts the repulsive force (F C 3) generated between the second housing (3a) and the main magnet (4) such that the second housing arrangement (3) and the main magnet (4) are maintained in a force equilibrium state. The first coil (2c) and the main magnet (4) are configured to generate a first alternating magnetic force (F A 1), and the second coil (3c) and the main magnet (4) are configured to generate a second alternating magnetic force (F A 2). Manipulating electrical current in the first coil (2c) causes a change in the first alternating magnetic force (F A 1) thereby causing displacement (D) between the first housing arrangement (2) and the main magnet (4), and/or manipulating electrical current in the second coil (3c) causes a change in the second alternating magnetic force (F A 2) thereby causing displacement (D) between the second housing arrangement (3) and the main magnet (4). The dual action of the magnet actuator facilitates use over a wider range of resonance frequencies, such as for producing both sound waves and haptic feedback.
    • 5. 发明申请
    • AUDIO GENERATING ARRANGEMENT AND ELECTRONIC DEVICE COMPRISING SUCH ARRANGEMENT
    • WO2021170220A1
    • 2021-09-02
    • PCT/EP2020/054924
    • 2020-02-25
    • HUAWEI TECHNOLOGIES CO., LTD.MAENPAA, Ossi
    • MAENPAA, Ossi
    • H04R1/32H04M1/03
    • An audio generating arrangement (1) for an electronic device (2), the arrangement (1) comprising an audio signal transmitter (3), a first audio radiating membrane (4) and a second audio radiating membrane (5) configured to be controlled separately, and a first control arrangement (6) and a second control arrangement (7) for controlling oscillations (8, 9) of the first audio radiating membrane (4) and the second audio radiating membrane (5), the oscillations (8, 9) generating audio. The first control arrangement (6) is configured to receive a first audio signal from the audio signal transmitter (3), and the first audio signal is configured to generate first oscillations (8) in the first audio radiating membrane (4). The second control arrangement (7) is configured to receive a second audio signal from the audio signal transmitter (3), and the second audio signal being configured to generate second oscillations (9) in the second audio radiating membrane (5). One of the first audio signal and the second audio signal is delayed in relation to the other, such that the first oscillations (8) and the second oscillations (9) are one of in phase or in reverse phase. This solution provides an audio generating arrangement that is able to adjust sound difference between the display and back-cover of an electronic device in order to minimize privacy leakage when device is used against ear, but also to maximize sound pressure level towards user when the device is used in loudspeaker mode.