BIOMETRIC FINGER SENSOR INCLUDING ARRAY SHIELDING ELECTRODE AND RELATED METHODS
    61.
    发明申请
    BIOMETRIC FINGER SENSOR INCLUDING ARRAY SHIELDING ELECTRODE AND RELATED METHODS 有权
    包括阵列屏蔽电极的生物量指尖传感器及相关方法

    公开(公告)号:US20140171158A1

    公开(公告)日:2014-06-19

    申请号:US13718307

    申请日:2012-12-18

    Applicant: APPLE INC.

    Abstract: A biometric finger sensor may include an array of biometric finger sensing pixels and an array shielding electrode outside the array of biometric finger sensing pixels. The biometric finger sensor may further include a finger drive electrode outside the array shielding electrode. Finger drive circuitry may generate a finger drive signal for the finger drive electrode and generate a compensating finger drive signal for the shielding electrode.

    Abstract translation: 生物测量手指传感器可以包括生物测定手指感测像素的阵列和阵列屏蔽电极在生物测定手指感测像素阵列之外。 生物测定手指传感器还可以包括阵列屏蔽电极外的指状驱动电极。 手指驱动电路可以产生手指驱动电极的手指驱动信号,并产生用于屏蔽电极的补偿手指驱动信号。

    Ultrasonic water-agnostic touch detection sensor

    公开(公告)号:US11422113B2

    公开(公告)日:2022-08-23

    申请号:US16917779

    申请日:2020-06-30

    Applicant: Apple Inc.

    Abstract: An ultrasonic touch sensing system that uses both compressional and shear waves for touch and water detection is disclosed. When no touch or water is present, less shear and compressional wave energy is absorbed, so both shear and compressional wave reflections do not have significant amplitude decreases. When a finger is in contact with the sensing plate, both shear and compressional wave energy is absorbed, so both shear and compressional wave reflections have significant amplitude decreases. When water is in contact with the sensing plate, compressional energy is absorbed but little or no shear wave energy is absorbed, so while compressional wave reflections have significant amplitude decreases, shear wave reflections do not. From these amplitudes, a determination can be made as to whether no touch is present on the sensing plate, whether a touch is present on the sensing plate, or whether water is present on the sensing plate.

    Wearable electronic device having a light field camera

    公开(公告)号:US11036844B2

    公开(公告)日:2021-06-15

    申请号:US17024574

    申请日:2020-09-17

    Applicant: Apple Inc.

    Abstract: A method of authenticating a user of a wearable electronic device includes emitting light into a dorsal side of a forearm near a wrist of the user; receiving, using a light field camera, remissions of the light from the dorsal side of the forearm near the wrist of the user; generating a light field image from the remissions of the light; performing a synthetic focusing operation on the light field image to construct at least one image of at least one layer of the forearm near the wrist; extracting a set of features from the at least one image; determining whether the set of features matches a reference set of features; and authenticating the user based on the matching. In some embodiments, the method may further include compensating for a tilt of the light field camera prior to or while performing the synthetic focusing operation.

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