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    Electronic device with noise-cancelling force sensor
    38.
    发明专利
    Electronic device with noise-cancelling force sensor 未知

    公开(公告)号：AU2012352798A1

    公开(公告)日：2014-05-01

    申请号：AU2012352798

    申请日：2012-11-21

    Applicant: APPLE INC

    Inventor： YANG BINGRUI ,  GRUNTHANER MARTIN P ,  HOTELLING STEVEN P

    IPC: H03K17/96

    Abstract: An electronic device may have a housing in which components such as a display are mounted. A strain gauge may be mounted on a layer of the display such as a cover layer or may be mounted on a portion of the housing or other support structure. The layer of material on which the strain gauge is mounted may be configured to flex in response to pressure applied by a finger of a user. The strain gauge may serve as a button for the electronic device or may form part of other input circuitry. A differential amplifier and analog-to-digital converter circuit may be used to gather and process strain gauge signals. The strain gauge may be formed form variable resistor structures that make up part of a bridge circuit that is coupled to the differential amplifier. The bridge circuit may be configured to reduce the impact of capacitively coupled noise.

    PIXELATED SELF-CAPACITANCE WATER REJECTION
    39.
    发明公开
    PIXELATED SELF-CAPACITANCE WATER REJECTION 审中-公开

    公开(公告)号：EP3213173A4

    公开(公告)日：2018-06-06

    申请号：EP15854782

    申请日：2015-10-27

    Applicant: APPLE INC

    Inventor： LI YINGXUAN ,  YAO WEIJUN ,  PANT VIVEK ,  GRUNTHANER MARTIN P ,  YOUSEFPOR MARDUKE ,  RANGANATHAN SUMANT

    IPC: G06F3/044 ,  G06F3/041

    CPC classification number: G06F3/044 ,  G06F3/0418

    Abstract: A touch sensor panel is disclosed. In some examples, the touch sensor panel comprises a plurality of touch node electrodes. In some examples, the touch sensor panel comprises a touch controller configured to drive and sense the plurality of touch node electrodes in a fully bootstrapped configuration to obtain a fully bootstrapped touch image, drive and sense the plurality of touch node electrodes in a second configuration, different from the fully bootstrapped configuration, to obtain a second touch image, the second touch image including an effect of water on the touch sensor panel, and determine a final touch image based on the fully bootstrapped touch image and the second touch image, the final touch image not including the effect of the water on the touch sensor panel. In some examples, the second configuration comprises a mutual capacitance configuration. In some examples, the second configuration comprises a partially bootstrapped configuration.

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