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    DATA PROCESSING SYSTEM AND DATA PROCESSING METHOD
    41.
    发明申请
    DATA PROCESSING SYSTEM AND DATA PROCESSING METHOD 有权

    公开(公告)号：US20250061746A1

    公开(公告)日：2025-02-20

    申请号：US18939631

    申请日：2024-11-07

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Tatsuya OKANO ,  Teppei OGUNI ,  Kengo AKIMOTO

    IPC: G06V40/20 ,  G06V10/74 ,  G06V10/762 ,  G06V10/82 ,  G06V40/16

    Abstract: A data processing system that can sense fatigue or the like using a neural network is provided. First, a reference image is obtained on the basis of first to n-th images (n is an integer greater than or equal to 2). Next, the first to n-th images and the reference image are input to an input layer of a neural network, first to n-th estimated ages and a reference estimated age are output from an output layer, and first to n-th data and reference data are output from an intermediate layer. After that, first to n-th coordinates are obtained in each of which an x-coordinate is a value corresponding to a difference between the reference estimated age and the first to n-th estimated ages and a y-coordinate is a value corresponding to the degree of similarity between the reference data and the first to n-th data. Next, a query image is input to the input layer, a query estimated age is output from the output layer, query data is output from the intermediate layer, and query coordinates are obtained using the output results. Whether a person of a face included in the query image feels fatigue or the like is determined on the basis of the first to n-th coordinates and the query coordinates.

    PARAMETER SEARCH METHOD
    43.
    发明公开
    PARAMETER SEARCH METHOD 审中-公开

    公开(公告)号：US20240211670A1

    公开(公告)日：2024-06-27

    申请号：US18591680

    申请日：2024-02-29

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Teppei OGUNI ,  Takeshi OSADA ,  Takahiro FUKUTOME

    IPC: G06F30/367 ,  G06N3/042 ,  G06N3/08

    CPC classification number: G06F30/367 ,  G06N3/042 ,  G06N3/08

    Abstract: A parameter candidate for a semiconductor element is provided. A data set of measurement data is provided to a parameter extraction portion, and a model parameter is extracted. A first netlist is provided to a circuit simulator, simulation is performed using the first netlist and the model parameter, and a first output result is output. A classification model learns the model parameter and the first output result and classifies the model parameter. A second netlist and a model parameter are provided to the circuit simulator. A variable to be adjusted is supplied to a neural network, an action value function is output, and the variable is updated. The circuit simulator performs simulation using the second netlist and the model parameter. When a second output result to be output does not satisfy conditions, a weight coefficient of the neural network is updated. When the second output result satisfies the conditions, the variable is judged to be the best candidate.

    METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL, AND LITHIUM ION BATTERY
    44.
    发明公开
    METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL, AND LITHIUM ION BATTERY 审中-公开

    公开(公告)号：US20240186511A1

    公开(公告)日：2024-06-06

    申请号：US18442586

    申请日：2024-02-15

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Takuya MIWA ,  Yumiko YONEDA ,  Teppei OGUNI

    IPC: H01M4/58 ,  C01B25/45 ,  H01M4/02 ,  H01M10/0525

    CPC classification number: H01M4/5825 ,  C01B25/45 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/40 ,  H01M2004/028 ,  H01M10/0525

    Abstract: A composite oxide with high diffusion rate of lithium is provided. Alternatively, a lithium-containing complex phosphate with high diffusion rate of lithium is provided. Alternatively, a positive electrode active material with high diffusion rate of lithium is provided. Alternatively, a lithium ion battery with high output is provided. Alternatively, a lithium ion battery that can be manufactured at low cost is provided. A positive electrode active material is formed through a first step of mixing a lithium compound, a phosphorus compound, and water, a second step of adjusting pH by adding a first aqueous solution to a first mixed solution formed in the first step, a third step of mixing an iron compound with a second mixed solution formed in the second step, a fourth step of performing heat treatment under a pressure more than or equal to 0.1 MPa and less than or equal to 2 MPa at a highest temperature more than 100° C. and less than or equal to 119° C. on a third mixed solution formed in the third step with a pH of more than or equal to 3.5 and less than or equal to 5.0.

    SECONDARY BATTERY
    46.
    发明公开
    SECONDARY BATTERY 审中-公开

    公开(公告)号：US20240047691A1

    公开(公告)日：2024-02-08

    申请号：US18360024

    申请日：2023-07-27

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Jo SAITO ,  Yohei MOMMA ,  Kunihiro FUKUSHIMA ,  Teppei OGUNI

    IPC: H01M4/62 ,  H01M4/525 ,  H01M4/1315 ,  H01M4/134

    CPC classification number: H01M4/628 ,  H01M4/525 ,  H01M4/1315 ,  H01M4/134 ,  H01M2004/028

    Abstract: A secondary battery with little deterioration is provided. A highly reliable secondary battery is provided. A positive electrode active material included in the secondary battery includes a crystal of lithium cobalt oxide. The positive electrode active material includes a first region including a surface parallel to the (00l) plane of the crystal and a second region including a surface parallel to a plane intersecting with the (00l) plane. The positive electrode active material contains magnesium. The first region includes a portion with a magnesium concentration that is higher than or equal to 0.5 atomic % and lower than or equal to 10 atomic %. The second region includes a portion with a magnesium concentration that is higher than the magnesium concentration in the first region and is higher than or equal to 4 atomic % and lower than or equal to 30 atomic %. Furthermore, the second region includes a portion with a fluorine concentration that is higher than a fluorine concentration in the first region and is higher than or equal to 0.5 atomic % and lower than or equal to 10 atomic %.

    STATISTICAL MODEL CREATION METHOD, STATE ESTIMATION METHOD, AND STATE ESTIMATION SYSTEM
    48.
    发明申请
    STATISTICAL MODEL CREATION METHOD, STATE ESTIMATION METHOD, AND STATE ESTIMATION SYSTEM 有权

    公开(公告)号：US20220344054A1

    公开(公告)日：2022-10-27

    申请号：US17640842

    申请日：2020-09-15

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Teppei OGUNI ,  Kengo AKIMOTO ,  Tatsuya OKANO

    IPC: G16H50/30 ,  G06N7/00

    Abstract: A method for estimating the state of a target person in consideration of an individual difference is provided. The method includes a step of estimating the state of the target person from second data that includes speed of change in pupil area of the target person using a statistical model where a parameter is estimated from first data that includes a plurality of sets of data on speed of change in pupil area of a plurality of persons and data on the states of the plurality of persons, and a step of outputting an estimation result of the state of the target person. Note that the statistical model is a hierarchical Bayesian model using ordered logistic regression where a linear predictor is the sum of an intercept, the product of a partial regression coefficient and an explanatory variable, and a parameter showing an individual difference.

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