Multiple light paths architecture and obscuration methods for signal and perfusion index optimization

    公开(公告)号:US10215698B2

    公开(公告)日:2019-02-26

    申请号:US14569235

    申请日:2014-12-12

    Applicant: Apple Inc.

    Abstract: A photoplethysmographic (PPG) device is disclosed. The PPG device can include one or more light emitters and one or more light sensors to generate the multiple light paths for measuring a PPG signal and perfusion indices of a user. The multiple light paths between each pair of light emitters and light detectors can include different separation distances to generate both an accurate PPG signal and a perfusion index value to accommodate a variety of users and usage conditions. In some examples, the multiple light paths can include the same separation distances for noise cancellation due to artifacts resulting from, for example, tilt and/or pull of the device, a user's hair, a user's skin pigmentation, and/or motion. The PPG device can further include one or more lenses and/or reflectors to increase the signal strength and/or and to obscure the optical components and associated wiring from being visible to a user's eye.

    Haptic feedback for rotary inputs
    23.
    发明授权

    公开(公告)号:US09971407B2

    公开(公告)日:2018-05-15

    申请号:US14870697

    申请日:2015-09-30

    Applicant: Apple Inc.

    CPC classification number: G06F3/016 G06F3/0362

    Abstract: An electronic device is disclosed. In some examples, the electronic device comprises a mechanical input configured to rotate in a first direction about a rotation axis in response to a first input at the mechanical input. In some examples, the electronic device comprises a mechanical input sensor coupled to the mechanical input and configured to sense a rotation of the mechanical input about the rotation axis. In some examples, the electronic device comprises a mechanical input actuator coupled to the mechanical input and configured to rotate the mechanical input in a second direction about the rotation axis. In some examples, the mechanical input comprises a shared driving and sensing segment. In some examples, the mechanical input sensor is configured to sense the rotation of the mechanical input at the shared driving and sensing segment. In some examples, the mechanical input actuator is configured to generate magnetic fields for rotating the mechanical input at the shared driving and sensing segment. In some examples, the mechanical input is further configured to translate along the rotation axis in response to a second input. In some examples, the mechanical input actuator comprises at least one piezoelectric element configured to allow the mechanical input to translate along the rotation axis. In some examples, the mechanical input actuator comprises at least one piezoelectric element configured to rotate the mechanical input in the second direction about the rotation axis.

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