Clock frequency limiter
    193.
    发明授权

    公开(公告)号:US12267080B2

    公开(公告)日:2025-04-01

    申请号:US18664811

    申请日:2024-05-15

    Applicant: Apple Inc.

    Abstract: A receiver circuit that limits the frequency of a clock signal used in a computer system is disclosed. An embodiment of the receiver circuit includes a front-end circuit configured to generate an equalized signal, a clock generator circuit configured to generate a clock signal using a plurality of samples of the equalized signal, and a measurement circuit. The measurement circuit is configured to monitor a frequency of the clock signal and activate an indication signal in response to determining that the frequency of the clock signal exceeds a threshold frequency. In response to activation of the indication signal, the clock generator circuit is configured to set the frequency of the clock signal to a particular frequency.

    In-tree geometry quantization of point clouds

    公开(公告)号:US12266141B2

    公开(公告)日:2025-04-01

    申请号:US18545966

    申请日:2023-12-19

    Applicant: Apple Inc.

    Abstract: An example method includes receiving a plurality of points that represent a point cloud; representing a position of the point in each dimension of a three-dimensional space as a sequence of bits, where the position of the point is encoded according to a tree data structure; partitioning at least one of the sequences of bits into a first portion of bits and a second portion of bits; quantizing each of the second portions of bits according to a quantization step size, where the quantization step size is determined according to an exponential function having a quantization parameter value as an input and the quantization step size as an output; and generating a data structure representing the point cloud and including the quantized second portions of bits.

    Navigation assistance using spatial audio

    公开(公告)号:US12264931B1

    公开(公告)日:2025-04-01

    申请号:US16783929

    申请日:2020-02-06

    Applicant: Apple Inc.

    Abstract: A method for providing navigation assistance using a head-worn device that has a camera, several microphones, and several speakers. The method captures sound in an environment as a plurality of microphone audio signals, captures, using the camera, a scene of the environment as a digital image, and processes the digital image to detect an object therein. The method selects, in response to the detection of the object, one of several navigation audio rendering modes. The several navigation audio rendering modes include a first mode that activates an acoustic transparency function to cause the speakers to reproduce the sound of the environment, a second mode that sonifies the object and activates the acoustic transparency function, and a third mode that sonifies the object, partially activates the acoustic transparency function, and an activates active noise cancellation function.

    METHOD AND SYSTEM FOR PER BEAM BASED UPLINK DUTY CYCLE MANAGEMENT ACCORDING TO AN EVENT FROM A BODY PROXIMITY SENSOR (BPS)

    公开(公告)号:US20250106786A1

    公开(公告)日:2025-03-27

    申请号:US18725063

    申请日:2022-01-05

    Applicant: Apple Inc.

    Abstract: A user equipment including a transceiver and a processor is configured to receive, from a base station and via the transceiver, a set of resource indicators identifying a set of beams and a configuration for reporting a duty cycle for transmission in an uplink direction for at least one resource indicator of the set of resource indicators. The processor is also configured to, at least one of periodically or based on an event reported by a body proximity sensor (BPS), determine the duty cycle for transmission in the uplink direction for the at least one resource indicator of the set of resource indicators; and transmit, to the base station via using the transceiver, the determined duty cycle and the corresponding at least one resource indicator of the set of resource indicators according to the received configuration for reporting the duty cycle.

    CAPACITIVE IN EAR DETECT ON EARPHONES

    公开(公告)号:US20250106546A1

    公开(公告)日:2025-03-27

    申请号:US18737837

    申请日:2024-06-07

    Applicant: Apple Inc.

    Abstract: An earphone comprising: a device housing that defines an internal cavity within the device housing; an acoustic port formed through the device housing and having an opening at an exterior surface of the device housing; an audio driver disposed within the device housing and aligned to emit sound through the acoustic port; a plurality of capacitive pixels disposed within the internal cavity, wherein at least two of the capacitive pixels are disposed radially around the acoustic port and spaced apart from each other by at least 90 degrees; and sensor control circuitry disposed within the internal cavity and operatively coupled to drive the plurality of capacitive pixels at a predetermined frequency to readout a capacitance at each of the plurality of capacitive pixels and determine if the earphone is within an ear of a user

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