Certificated quantum cryptography system and method

    公开(公告)号:US10756889B2

    公开(公告)日:2020-08-25

    申请号:US16104350

    申请日:2018-08-17

    Abstract: A certificated quantum cryptography method is provided. The method is performed by a quantum cryptography server connected to a first communication device and a second communication device which perform quantum key distribution. The method includes step of receiving a first quantum public key generated by the first communication device and a second quantum public key generated by the second communication device and registering measurement outcomes of the first and second quantum public keys. When first basis information and second basis information acquired by performing quantum key distribution between the first and second communication devices are signed and exchanged, the method includes the step of receiving a third quantum public key and a fourth quantum public key.

    Desiccant cooling system
    198.
    发明授权

    公开(公告)号:US10731877B2

    公开(公告)日:2020-08-04

    申请号:US14728040

    申请日:2015-06-02

    Inventor: Dae Young Lee

    Abstract: A desiccant cooling system includes a desiccant cooling device partitioned into a desiccant cooling path and a regeneration path and including a desiccant rotor having one side on the desiccant cooling path and other side on the regeneration path and a cooler configured to cool high-temperature low-humidity air which has been dehumidified while passing through the one side of the desiccant rotor; and a vapor compression cooling device including a compressor configured to compress a refrigerant, a condenser configured to be cooled by the air cooled by passing through the cooler, and condenses the refrigerant compressed by the compressor, an expansion valve configured to expand the refrigerant condensed by the condenser, and an evaporator configured to evaporate the refrigerant expanded by the expansion valve and transfer the evaporated refrigerant to the compressor.

    Unmanned aerial vehicle system having multi-rotor type rotary wing

    公开(公告)号:US10723456B2

    公开(公告)日:2020-07-28

    申请号:US15375590

    申请日:2016-12-12

    Abstract: The present invention relates to an unmanned aerial vehicle system having a multi-rotor type rotary wing. The unmanned aerial vehicle system having a multi-rotor type rotary wing includes a first unmanned aerial vehicle, at least one second unmanned aerial vehicle, and a bridge that connects the first unmanned aerial vehicle and the at least one second unmanned aerial vehicle to be separable from each other, wherein the at least one second unmanned aerial vehicle is moveable by the first unmanned aerial vehicle in a state where the at least one second unmanned aerial vehicle is coupled to the first unmanned aerial vehicle by the bridge without being driven, and the at least one second unmanned aerial vehicle is separable from the first unmanned aerial vehicle which is in flight.

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