Embedded ultrasonic transducers
    72.
    发明授权

    公开(公告)号:US12183115B2

    公开(公告)日:2024-12-31

    申请号:US17931458

    申请日:2022-09-12

    Applicant: Apple Inc.

    Abstract: Examples of the disclosure are directed to micro-machined ultrasonic transducers (MUTs) which can be embedded into a flexible band of a watch to detect touch, gestures, physiological signals, and transfer data. In some examples, the MUTs can include a piezoelectric material disposed between two electrodes and coupled to a base material having a plurality of cavities, to support motion of the transducer structure. In some examples, the MUTs can be coupled to multiplexing circuitry to stimulate, configure and control the MUTs. In some examples, the size, shape, and arrangement of transducers can be changed to improve characteristics associated with ultrasonic transmission. In some examples, the MUT array can be driven (e.g., by the CMOS circuitry) to beamform the transmitted and/or the received ultrasonic waves. In some examples, the one or more MUT arrays can be configured to generate haptic feedback via the flexible band.

    Multi-user-RTS and CTS frames for a sub-channel selective transmission station

    公开(公告)号:US12120738B2

    公开(公告)日:2024-10-15

    申请号:US17461630

    申请日:2021-08-30

    Applicant: Apple Inc.

    CPC classification number: H04W74/0816

    Abstract: During operation, an electronic device (e.g., an access point) may provide a multi-user (MU)-request-to-send (RTS) frame that communicates an RTS in a channel associated with the second electronic device and a second RTS in a second channel associated with a third electronic device. For example, the channel may include a primary channel and the second channel may include a secondary channel. Note that the third electronic device may include a SST station and the second electronic device may include a non-SST station. Then, the electronic device may receive an MU-clear-to-send (CTS) frame that includes a CTS in a third channel associated with the third electronic device. Moreover, the third channel may be equal to or a subset of the second channel, and/or the third channel may include a CTS reception channel associated with the electronic device.

    Request to send (RTS)/clear to send (CTS) frames and transmission rules

    公开(公告)号:US12108447B2

    公开(公告)日:2024-10-01

    申请号:US17187198

    申请日:2021-02-26

    Applicant: Apple Inc.

    CPC classification number: H04W74/0816 H04W72/0446

    Abstract: Some aspects of this disclosure include apparatuses and methods for implementing request to send (RTS) and clear to transmit (CTS) frames and transmission rules for the RTS and CTS frame. For example, some aspects relate to an electronic device including a transceiver and one or more processors communicatively coupled to the transceiver. The one or more processors receive, using the transceiver, a request to send (RTS) frame from the second electronic device and determine, using the received RTS frame, a format for a clear to send (CTS) frame to use in response to the RTS frame. The one or more processors further transmit, using the transceiver, the CTS frame based on the determined format on at least one sub-channel on which the RTS frame was received and that the at least one sub-channel is idle.

    Multi-Resource-Unit Aggregation
    77.
    发明公开

    公开(公告)号:US20240305408A1

    公开(公告)日:2024-09-12

    申请号:US18667923

    申请日:2024-05-17

    Applicant: Apple Inc.

    CPC classification number: H04L1/1621 H04L1/0057 H04L5/0007 H04L5/0098

    Abstract: An electronic device (such as an access point) is described. This electronic device transmits an orthogonal frequency division multiple access (OFDMA) frame to a recipient electronic device (such as a client or a station). The OFDMA frame includes multiple predefined resource units (RUs) allocated to the recipient electronic device in a set of predefined RUs having associated frequency bandwidths. Moreover, the multiple predefined RUs include two or more first predefined RUs having a first number of tones less than a predefined amount, or two or more second predefined RUs having a second number of tones greater than or equal to the predefined amount. For example, the predefined amount may include 242 tones. Note that the multiple predefined RUs may have the same or different numbers of tones. Moreover, the electronic may receive an acknowledgment or a block acknowledgment from the recipient electronic device.

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