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    COMMUNICATION NETWORK SYSTEM
    2.
    发明公开
    COMMUNICATION NETWORK SYSTEM 审中-公开

    公开(公告)号：US20230353192A1

    公开(公告)日：2023-11-02

    申请号：US18220146

    申请日：2023-07-10

    申请人： DAIKIN INDUSTRIES, LTD.

    发明人： Kosuke HOTTA ,  Shin HIGASHIYAMA

    IPC分类号： H04B3/44 ,  H04B3/46 ,  H04B3/30

    CPC分类号： H04B3/44 ,  H04B3/46 ,  H04B3/30

    摘要： An air-conditioning apparatus includes a first transmission channel, a plurality of second transmission channels different from the first transmission channel, a controller connected to the first transmission channel and not connected to the second transmission channels, a plurality of air-conditioning indoor units connected to the second transmission channels and not connected to the first transmission channel, and a plurality of air-conditioning outdoor units. The plurality of air-conditioning outdoor units electrically connect the first transmission channel and the second transmission channels, and do not transmit a short-circuit state occurring in one of the first transmission channel and the second transmission channels to a transmission channel other than the one of the first transmission channel and the second transmission channels, thereby enabling communication between devices connected to the transmission channel other than the one.

    Grounding circuit, electrical device, grounding control method, and grounding control program
    4.
    发明授权
    Grounding circuit, electrical device, grounding control method, and grounding control program 有权

    公开(公告)号：US10666044B2

    公开(公告)日：2020-05-26

    申请号：US16303218

    申请日：2017-05-19

    申请人： NEC Corporation

    发明人： Shohei Yamaguchi

    IPC分类号： H02H9/02 ,  H02G9/02 ,  H04B3/44

    摘要： [Problem] To suppress current flowing to a contact of a relay when grounding a device to be grounded by connecting the contact of the relay, and to suppress arc discharge between relay contacts when the grounding state of the device to be grounded is released by disconnecting the relay contact.[Solution] A grounding circuit equipped with: a first relay contact connected to a device to be grounded; a resistor that is connected between the first relay contact and an earth, and that suppresses current flowing to the first relay contact when the contact of the first relay is closed; and a second relay contact that is connected in parallel with the resistor, and that is closed before the first relay contact is opened when the grounding state of the device to be grounded is released.

    Electrical tap
    5.
    发明授权
    Electrical tap 有权

    公开(公告)号：US10659170B2

    公开(公告)日：2020-05-19

    申请号：US16036008

    申请日：2018-07-16

    申请人： TECHNETIX B.V.

    发明人： Jan Ariesen

    IPC分类号： H04B10/00 ,  H04B10/80 ,  H04B3/44 ,  H04B10/27

    摘要： There is provided an outdoor tap comprising an input and an output connectable to a signal path carrying electrical power and an RF signal, and a plurality of output ports connectable to users of a broadband network, wherein a power return path is provided between each output port and the input, the power return path selectively actuable to transmit electrical power from a user to power elements disposed in the signal path. A switch is disposed in the power return path, the switch selectively operable to activate the power return path. The switch is responsive to AC power from a user when a main electrical grid supply is interrupted.

    GROUNDING CIRCUIT, ELECTRICAL DEVICE, GROUNDING CONTROL METHOD, AND GROUNDING CONTROL PROGRAM
    6.
    发明申请
    GROUNDING CIRCUIT, ELECTRICAL DEVICE, GROUNDING CONTROL METHOD, AND GROUNDING CONTROL PROGRAM 审中-公开

    公开(公告)号：US20190207383A1

    公开(公告)日：2019-07-04

    申请号：US16303218

    申请日：2017-05-19

    申请人： NEC Corporation

    发明人： Shohei YAMAGUCHI

    IPC分类号： H02H9/02 ,  H02G9/02 ,  H04B3/44

    CPC分类号： H02H9/02 ,  H02G9/02 ,  H04B3/44

    摘要： [Problem] To suppress current flowing to a contact of a relay when grounding a device to be grounded by connecting the contact of the relay, and to suppress arc discharge between relay contacts when the grounding state of the device to be grounded is released by disconnecting the relay contact.[Solution] A grounding circuit equipped with: a first relay contact connected to a device to be grounded; a resistor that is connected between the first relay contact and an earth, and that suppresses current flowing to the first relay contact when the contact of the first relay is closed; and a second relay contact that is connected in parallel with the resistor, and that is closed before the first relay contact is opened when the grounding state of the device to be grounded is released.

    Power over data lines system with redundant power connections
    7.
    发明授权
    Power over data lines system with redundant power connections 有权

    公开(公告)号：US10313139B2

    公开(公告)日：2019-06-04

    申请号：US15479187

    申请日：2017-04-04

    申请人： Linear Technology Corporation

    发明人： David M. Dwelley ,  Andrew J. Gardner

    IPC分类号： H04L12/437 ,  H04L12/10 ,  H04L12/24 ,  G06F1/26 ,  H04B3/44 ,  H04L12/40 ,  H04L12/403 ,  H04L12/44

    摘要： In one embodiment, a master device has a first port and a second port and initially applies a DC voltage only to the first port. A plurality of slave devices, each have a third port and a fourth port, are serially connected to the master device in a ring, via conductors, starting at the first port and ending at the second port. The conductors simultaneously carry the DC voltage and differential data. Each slave device, after performing a detection routine, then sequentially applies the DC voltage to the adjacent downstream slave device in a first direction around the ring. If the master does not detect the presence of the DC voltage at its second port, the master device applies the DC voltage to both the first port and the second port to sequentially power up the slave devices in both directions around the ring of slave devices.