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342 条记录 (耗时 0.019 秒)

    Indoor access point position management
    125.
    发明授权
    Indoor access point position management 有权

    公开(公告)号：US12099133B2

    公开(公告)日：2024-09-24

    申请号：US17487630

    申请日：2021-09-28

    申请人： Hewlett Packard Enterprise Development LP

    发明人： Jianpo Han ,  Jiguang Zheng ,  Kuanyue Li

    IPC分类号： G01S5/02 ,  G01R33/022 ,  G01R33/24

    CPC分类号： G01S5/0284 ,  G01R33/022 ,  G01R33/24

    摘要： In embodiments of the present disclosure, a method is provided for managing an AP position for an access point. In the method, a magnetic distribution map is obtained for an indoor area, the magnetic distribution map representing a plurality of reference magnetic values that are collected at a plurality of reference positions in the indoor area. A plurality of magnetic measurements are received, here the plurality of magnetic measurements are respectively collected at a plurality of access point (AP) positions at which a plurality of APs are deployed within the indoor area, and the plurality of AP positions are unknown. The plurality of AP positions are mapped to a portion of the plurality of reference positions based on the plurality of magnetic measurements and the plurality of reference magnetic values. The plurality of AP positions are determined based on the portion of the plurality of reference positions. Therefore, AP positions may be determined accurately and effectively in an indoor environment.

    Magnetic field measurement apparatus and magnetic field measurement method
    126.
    发明授权
    Magnetic field measurement apparatus and magnetic field measurement method 有权

    公开(公告)号：US11933865B2

    公开(公告)日：2024-03-19

    申请号：US17794124

    申请日：2021-02-18

    申请人： SUMIDA CORPORATION ,  Kyoto University

    发明人： Yoshiharu Yoshii ,  Masateru Hashimoto ,  Tsutomu Ootsuka ,  Shingo Hamada ,  Yuki Takemura ,  Kan Hayashi ,  Norikazu Mizuochi

    IPC分类号： G01R33/24

    CPC分类号： G01R33/24

    摘要： A magnetic resonance member 1 includes a crystal structure and is capable of electron spin quantum operations with microwaves of different frequencies corresponding to arrangement orientations of a vacancy and an impurity in a crystal lattice. A magnetic field transmission unit 4 senses a measurement target magnetic field at plural measurement positions different from each other, and applies application magnetic fields corresponding to the measurement target magnetic field sensed at the plural measurement positions to the magnetic resonance member 1 along respective different directions corresponding to the aforementioned arrangement orientations. A measurement control unit 21 controls a high frequency power supply 12, and determines detection values detected by a detecting device (an irradiating device 5 and a light receiving device 6) of the physical phenomena corresponding to the plural measurement positions. A calculation unit 22 calculates the measurement target magnetic field at the plural measurement positions on the basis of the detection values.

    MEASUREMENT APPARATUS AND MEASUREMENT METHOD
    128.
    发明公开
    MEASUREMENT APPARATUS AND MEASUREMENT METHOD 审中-公开

    公开(公告)号：US20230305084A1

    公开(公告)日：2023-09-28

    申请号：US18143939

    申请日：2023-05-05

    申请人： ASAHI INTECC CO., LTD.

    发明人： Satoru NEBUYA

    IPC分类号： G01R33/24 ,  G01R33/44 ,  A61B5/055

    CPC分类号： G01R33/24 ,  A61B5/055 ,  G01R33/443

    摘要： A measurement apparatus including: a static magnetic field applying part that applies a static magnetic field having a constant magnitude in a first direction to a measurement target; a plurality of current applying parts applying a plurality of AC currents oriented in a plurality of directions toward a portion of the measurement target via an electrode pair; a magnetic field detecting element that detects a magnitude of a magnetic field generated from the portion of the measurement target in response to the static magnetic field having the constant magnitude in the first direction and the plurality of AC currents; a calculating part for calculating impedance of the portion of the measurement target; and an internal information output part for generating information including an internal component of the measurement target.

    SYSTEM AND METHOD FOR INCREASED SIGNAL-TO-NOISE RATIO IN MULTI SPIN-ECHO PULSE IMAGING
    129.
    发明申请
    SYSTEM AND METHOD FOR INCREASED SIGNAL-TO-NOISE RATIO IN MULTI SPIN-ECHO PULSE IMAGING 审中-公开

    公开(公告)号：US20190128976A1

    公开(公告)日：2019-05-02

    申请号：US15797639

    申请日：2017-10-30

    申请人： Charles H. Cunningham ,  Jeffrey A. Stainsby ,  Andrew T. Curtis

    发明人： Charles H. Cunningham ,  Jeffrey A. Stainsby ,  Andrew T. Curtis

    IPC分类号： G01R33/24

    CPC分类号： G01R33/24 ,  G01R33/445 ,  G01R33/4835 ,  G01R33/5617

    摘要： The present disclosure provides a system for and a method of obtaining a magnetic resonance image by performing magnetic resonance imaging (MRI) at multiple slices simultaneously. The method comprises generating a multiband pulse sequence for spin-echo imaging, the pulse sequence comprising a multiband excitation pulse and at least one multiband refocusing pulse, wherein the multiband excitation pulse simultaneously excites multiple bands, wherein the at least one multiband refocusing pulse simultaneously refocuses the multiple bands, and wherein the phases of the bands excited by the multiband excitation pulse and the phases of the bands refocused by the at least one multiband refocusing pulse are set according to a single row of an orthogonal encoding matrix. The multiband excitation pulse and the at least one multiband refocusing pulse collectively form a multiband pulse pair.