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    DIMENSIONALITY REDUCTION OF TIME-SERIES DATA, AND SYSTEMS AND DEVICES THAT USE THE RESULTANT EMBEDDINGS
    1.
    发明申请
    DIMENSIONALITY REDUCTION OF TIME-SERIES DATA, AND SYSTEMS AND DEVICES THAT USE THE RESULTANT EMBEDDINGS 有权

    公开(公告)号：US20250068650A1

    公开(公告)日：2025-02-27

    申请号：US18718968

    申请日：2022-12-23

    Applicant: Ecole Polytechnique Federale De Lausanne

    Inventor： Steffen Schneider ,  Mackenzie W. Mathis

    IPC: G06F16/28 ,  G06F16/22

    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for dimensionality reduction of time-series using contrastive learning. A method can include receiving multidimensional input time series data that includes data from a session or sessions that span time, selecting positive samples and negative samples from the multidimensional input time series data for respective reference samples from the multidimensional input time series data, wherein the positive samples and negative samples are each selected with a respective predetermined distribution across the time of the session or sessions of the multidimensional input time series, and mapping the reference samples, the positive samples, and negative samples into a common embedding space.

    ELECTRONIC METADEVICE
    3.
    发明申请
    ELECTRONIC METADEVICE 有权

    公开(公告)号：US20250048709A1

    公开(公告)日：2025-02-06

    申请号：US18717221

    申请日：2022-12-09

    Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)

    Inventor： Mohammad SAMIZADEH NIKOOYTABALVANDANI ,  Elison de Nazareth MATIOLI

    IPC: H01L29/41 ,  H01L29/20 ,  H01L29/417 ,  H01L29/778 ,  H01L29/86

    Abstract: Electronic metadevice comprising a conductive channel; a metal layer superposed on the conductive channel; and a barrier layer located between the metal layer and the conductive channel. The metal layer includes at least one recess extending through the metal layer to define at least one metallic metastructure comprising at least one first metal layer portion adjacent to at least one second metal layer portion. The recess extends through the metal layer to define a micro-structured or a nano-structured first metal layer portion comprising at least one first metallic extension or finger extending away from a first support of the first metal layer portion towards the second metal layer portion; and a micro-structured or a nano-structured at least one second metal layer portion comprising at least one second metallic extension or finger extending away from a second support of the second metal layer portion towards the first metal layer portion.

    Electrostatic particle collector
    5.
    发明授权
    Electrostatic particle collector 有权

    公开(公告)号：US12194475B2

    公开(公告)日：2025-01-14

    申请号：US18256854

    申请日：2021-12-07

    Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)

    Inventor： Nikunj Dudani ,  Satoshi Takahama

    IPC: B03C3/06 ,  B03C3/36 ,  B03C3/38 ,  B03C3/49

    Abstract: ESP particle collector (1) for collecting particles in a particle containing gas stream, comprising an inlet section (4), a collector section (6), and an electrode arrangement (8), the inlet section comprising a flow tube (10) defining a gas flow channel (12) therein bounded by a guide wall (24) extending between an entry end (14) and a collector end (16) that serves as an inlet to the collector section (6), the entry end comprising an inlet (28) for the particle gas stream and a sheath flow inlet portion (26) for generating a sheath flow around the particle gas stream, the collector section comprising a housing (18) coupled to the flow tube, and a collector plate (20) mounted therein having a particle collection surface (23). The ESP particle collector is configured to allow optical analysis of the collector plate particle collection surface to measure particles collected thereon. The electrode arrangement comprises at least a base electrode (8a) positioned below the collection surface and a counter-base electrode (8b) positioned at a separation distance L2 above the collection surface such that an electrical field is generated between the electrodes configured to precipitate said particles on the collection surface, wherein the electric field is in a range of 0.1 kV per mm to 1.5 kV per mm, with an absolute voltage on any said electrode that is less than 10 kV, and wherein a ratio ratio I of a radius LI of said inlet at the collector end divided by said separation distance L2 is in a range of 0.8 to 1.2.

    METHOD FOR OPERATING A POWER CONVERTER AND POWER CONVERTER
    10.
    发明公开
    METHOD FOR OPERATING A POWER CONVERTER AND POWER CONVERTER 审中-公开

    公开(公告)号：US20240266963A1

    公开(公告)日：2024-08-08

    申请号：US18682393

    申请日：2022-08-09

    Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)

    Inventor： Drazen Dujic ,  Jakub Kucka

    IPC: H02M3/335 ,  H02M1/00 ,  H02M1/08 ,  H02M1/32 ,  H02M1/38 ,  H02M3/00

    CPC classification number: H02M3/33571 ,  H02M1/0058 ,  H02M1/08 ,  H02M1/32 ,  H02M1/38 ,  H02M3/01

    Abstract: The present invention relates to a method for operating a resonant power converter. The resonant power converter has a primary stage and a secondary stage, at least one of which is actively operated and includes a half-bridge or full-bridge inverter having a pull-up switching device, coupled in parallel with a pull-up antiparallel diode and a pull-down switching device, coupled in parallel with a pull-down antiparallel diode, comprising the steps of alternately turning-off and turning on the pull-up and pull-down switching devices according to a periodic switching scheme, wherein after turning-off one of the switching devices the complementary switching device is respectively turned on after a delay time; and initiating an error handling, if after turning-off of one of the switching devices a non-conductance state of the antiparallel diode of the complementary switching device has been determined.

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