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    Multilayer photonic devices with metastructured layers
    31.
    发明授权
    Multilayer photonic devices with metastructured layers 有权

    公开(公告)号：US11962351B2

    公开(公告)日：2024-04-16

    申请号：US17540088

    申请日：2021-12-01

    Applicant: X Development LLC

    Inventor： Ian Alexander Durant Williamson ,  Martin Schubert ,  Alfred Ka Chun Cheung

    IPC: G02B6/12 ,  G02B6/26 ,  H04B10/60

    CPC classification number: H04B10/60 ,  G02B6/12002 ,  G02B6/12004 ,  G02B6/12007 ,  G02B6/26

    Abstract: A multilayer photonic device is described, including an input region configured to receive an input signal, a multilayer stack optically coupled with the input region to receive the input signal, and an output region optically coupled with the multilayer stack to output an output signal. The multilayer stack can include a first metastructured dispersive region disposed in a first patterned layer of the multilayer stack and a second metastructured dispersive region disposed in a second patterned layer of the multilayer stack and optically coupled with the first metastructured dispersive region. The first metastructured dispersive region and the second metastructured dispersive region can together structure the multilayer stack to generate the output signal in response to the input signal.

    Enabling and disabling wireless communication in electronic devices
    32.
    发明授权
    Enabling and disabling wireless communication in electronic devices 有权

    公开(公告)号：US11956380B2

    公开(公告)日：2024-04-09

    申请号：US17509667

    申请日：2021-10-25

    Applicant: X Development LLC

    Inventor： Erich Karl Nachbar ,  Grant Alexander Uy ,  Carl Turner

    IPC: H04M1/72463 ,  H04M1/72454 ,  H04W4/02 ,  H04W4/38 ,  H04W48/04

    CPC classification number: H04M1/72463 ,  H04M1/72454 ,  H04W4/027 ,  H04W4/38 ,  H04W48/04 ,  H04M2250/10 ,  H04M2250/12

    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for receiving, from one of two or more sensors of a device that independently determine whether an aircraft takeoff has likely occurred, an indication that the aircraft takeoff has likely occurred; activating, based on receiving the indication that the aircraft takeoff has likely occurred, an airplane mode of the device; receiving, while the device is in the airplane mode and from one of two or more other sensors of the device that independently determine that an aircraft flight is likely not occurring, an indication that the aircraft flight is likely not occurring; and deactivating, based on receiving the indication that the aircraft flight is likely not occurring, the airplane mode of the device. The indication that the aircraft takeoff has likely occurred may include acceleration data indicating an acceleration of the device in three dimensions.

    Lattice-imposed inverse design of physical devices
    33.
    发明授权
    Lattice-imposed inverse design of physical devices 有权

    公开(公告)号：US11934761B2

    公开(公告)日：2024-03-19

    申请号：US17122984

    申请日：2020-12-15

    Applicant: X Development LLC

    Inventor： Jaspreet Singh Jhoja ,  Brian Adolf

    IPC: G06F30/39 ,  G06F119/18

    CPC classification number: G06F30/39 ,  G06F2119/18

    Abstract: In some embodiments, techniques for creating fabricable segmented designs for physical devices are provided. A proposed segmented design is determined based on a design specification. The proposed segmented design includes a plurality of segments that each includes an indication of a material for the segment. The proposed segmented design also includes lattice members and lattice voids. A size of the lattice members and a size of the lattice voids are greater than a size of the segments and are greater than or equal to at least one of a minimum feature width and a minimum feature spacing of a fabrication system Performance of the proposed segmented design is simulated. One or more lattice members and lattice voids are chosen to change to improve the performance of the proposed segmented design.

    TRAINING MACHINE LEARNING MODELS WITH SPARSE INPUT
    35.
    发明公开
    TRAINING MACHINE LEARNING MODELS WITH SPARSE INPUT 审中-公开

    公开(公告)号：US20240070459A1

    公开(公告)日：2024-02-29

    申请号：US18456792

    申请日：2023-08-28

    Applicant: X Development LLC

    Inventor： Artem Goncharuk ,  Robert Clapp ,  Kevin Forsythe Smith ,  Shiang Yong Looi ,  Ananya Gupta ,  Joses Bolutife Omojola ,  Min Jun Park

    IPC: G06N3/08 ,  G06N5/04

    CPC classification number: G06N3/08 ,  G06N5/04

    Abstract: This disclosure describes a system and method for effectively training a machine learning model to identify features in DAS and/or seismic imaging data with limited or no human labels. This is accomplished using a masked autoencoder (MAE) network that is trained in multiple stages. The first stage is a self-supervised learning (SSL) stage where the model is generically trained to predict data that has been removed (masked) from an original dataset. The second stage involves performing additional predictive training on a second dataset that is specific to a particular geographic region, or specific to a certain set of desired features. The model is fine-tuned using labeled data in order to develop feature extraction capabilities.

    Low Power Beacon Scheduling
    36.
    发明公开
    Low Power Beacon Scheduling 审中-公开

    公开(公告)号：US20240070412A1

    公开(公告)日：2024-02-29

    申请号：US18489324

    申请日：2023-10-18

    Applicant: X DEVELOPMENT LLC

    Inventor： Brion Koprowski ,  Dean Kawaguchi ,  Adrian Wong ,  Amit Lal

    IPC: G06K7/10 ,  G06K19/07

    CPC classification number: G06K7/10366 ,  G06K19/0723

    Abstract: The technology relates to a wireless system that can be used indoors or outdoors, and is configured to reduce interference of beacon signals on channels used by the system. Aspects of the technology provide for evaluation of channel activity to determine an optimal transmission channel. This is beneficial where there is a high density of tags that may be configured for data transmission. Tags may include an antenna to receive signals; a first conditioning element to attenuate received signals corresponding with the system channels; a converter and a second conditioning element to prepare attenuated signals for analysis; a comparator to compare an attenuated signal to a threshold value; and a processor to transmit a beacon signal to a reader apparatus based on the comparison.

    SIMULATING ELECTRICAL GRID TRANSMISSION AND DISTRIBUTION USING MULTIPLE SIMULATORS
    37.
    发明公开
    SIMULATING ELECTRICAL GRID TRANSMISSION AND DISTRIBUTION USING MULTIPLE SIMULATORS 审中-公开

    公开(公告)号：US20240070352A1

    公开(公告)日：2024-02-29

    申请号：US17899163

    申请日：2022-08-30

    Applicant: X Development LLC

    Inventor： Mike Miao He ,  Hamed Khalilinia ,  Sze Mei Cat Wong ,  Laura Elizabeth Fedoruk ,  Leo Francis Casey ,  Xinyue Li

    IPC: G06F30/27

    CPC classification number: G06F30/27

    Abstract: Methods, systems, and apparatus, including medium-encoded computer program products, for selecting, from a unified electrical power grid model, a first proper subset of elements of the model. A first electrical grid simulation model is selected. A second, differing proper subset of elements of the model are selected. A second electrical grid simulation model that differs from the first electrical grid simulation model is selected. A set of boundary conditions common to the first electrical grid simulation model and the second electrical grid simulation model are determined. Operation of the electrical power grid is simulated, and can include (i) simulating, using the first electrical grid simulation model, the first proper subset of elements of the unified model, and the set of boundary conditions; and (ii) simulating, using the second electrical grid simulation model and the second proper subset of elements of the unified model, and the set of boundary conditions.

    Power ramping of beacon signals to enhance location accuracy
    39.
    发明授权
    Power ramping of beacon signals to enhance location accuracy 有权

    公开(公告)号：US11902858B2

    公开(公告)日：2024-02-13

    申请号：US17726647

    申请日：2022-04-22

    Applicant: X DEVELOPMENT LLC

    Inventor： David Andre ,  Erich Karl Nachbar

    IPC: H04W4/029 ,  H04B17/318 ,  H04W52/36 ,  G01S5/02

    CPC classification number: H04W4/029 ,  G01S5/0284 ,  H04B17/318 ,  H04W52/367

    Abstract: The technology enables locating asset tracking tags based on a ramped sequence of signals from one or more beacon tracking tags. The sequence includes at least one minimum power signal and at least one maximum power signal. Each signal in the sequence has a tag identifier and an initial signal strength value. Each beacon signal in the ramped sequence is associated with the time at which that beacon signal was received by a reader. Each beacon signal is also associated with a received signal strength at reception. A location of the beacon tracking tag is estimated according to the signals in the sequence based on the difference between the initial and received signal strengths. A position of the reader device is identified based on the beacon tag's location. An asset tracking tag location is identified based on the reader's location and packets received by the reader from the asset tag.

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