Communication system, gateway, terminal and communication method based on LoRa technology

    公开(公告)号:US11071061B2

    公开(公告)日:2021-07-20

    申请号:US16922111

    申请日:2020-07-07

    Abstract: A communication system, gateway, terminal, and communication method based on LoRa technology are provided. The system includes: a gateway configured to transmit an LoRa data packet containing a preamble, wherein duration of the transmission of the preamble is n1; and a terminal configured to perform channel activity detection one time for a duration of q1 each time after sleeping for a duration of p1, continue to sleep for the duration of p1 in response to the preamble not being detected, or receive and process the data packet and then continue to sleep for the duration of p1 in response to the preamble being detected, wherein p1>q1, and p1+q1 is less than or equal to n1.

    Powered exoskeleton and stabilizing structure thereof

    公开(公告)号:US10675204B2

    公开(公告)日:2020-06-09

    申请号:US15798505

    申请日:2017-10-31

    Abstract: The present disclosure relates to a powered exoskeleton. The powered exoskeleton includes a leg connection rod and a stabilizing structure. The stabilizing structure is mounted on the leg connection rod. The stabilizing structure is switched between a folded state and an unfolded state in such a manner that the stabilizing structure is folded on the leg connection rod when the stabilizing structure is in the folded state, and the stabilizing structure is suitable for being in contact with the ground and supports the leg connection rod in a tilted upward direction when the stabilizing structure is in the unfolded state.

    Omni wheel, motion device and control method thereof

    公开(公告)号:US10406854B2

    公开(公告)日:2019-09-10

    申请号:US15537920

    申请日:2016-09-09

    Abstract: An omni wheel, a motion device and a control method thereof are disclosed. The omni wheel includes a center wheel and a plurality of peripheral wheels distributed in a circle with respect to an axis of the center wheel; and a peripheral wheel brake component disposed on the centre wheel and configured to control a resistance of the peripheral wheels during a rotation of the peripheral wheels. The omni wheel solves the problem of low braking performance of the motion device by increasing the resistance of the peripheral wheels during rotation, and avoids any random rotation of the peripheral wheels.

    Spherical robot and method of controlling the same

    公开(公告)号:US10399620B2

    公开(公告)日:2019-09-03

    申请号:US15566998

    申请日:2017-03-20

    Abstract: The present disclosure relates to the field of robot technology, and discloses a spherical robot and a method of controlling the same. The spherical robot includes: a spherical shell, a spherical shell drive mechanism mounted inside the spherical shell to drive the spherical shell to spin about a center of sphere thereof, and a camera module. The spherical robot further includes a head shell in which the camera module is mounted, the head shell is located outside the spherical shell and is slideable along an outer surface of the spherical shell; and, the head shell is provided with a first magnetic component, the spherical shell drive mechanism is provided with a second magnetic component, and the first magnetic component is in a magnetic connection with the second magnetic component.

    Data processing methods and systems, and electronic devices

    公开(公告)号:US12041259B2

    公开(公告)日:2024-07-16

    申请号:US17770600

    申请日:2021-07-06

    CPC classification number: H04N19/48 H04N19/176

    Abstract: A data processing method includes: acquiring first image data including pixel values that are arranged consecutively and divided into data blocks, each data block occupying one byte and including at least one pixel value; and compressing, according to at least one compression parameter, at least one data set to be compressed in the first image data into a corresponding compression unit, so as to obtain second image data including the compression unit. The data set to be compressed includes at least two data groups arranged consecutively and identical. Each data group includes a single data block or at least two data blocks arranged consecutively. The at least one compression parameter includes a first length configured to represent the number of at least one data block in a data group. The compression unit includes one data group and a second length configured to represent the number of data groups.

    Method, device and system for encrypting interactive data

    公开(公告)号:US11477018B2

    公开(公告)日:2022-10-18

    申请号:US16825754

    申请日:2020-03-20

    Abstract: The disclosure provides a method, a device and a system for encrypting interactive data. In an aspect, the method includes: receiving a request for accessing a network from a terminal device, the request includes a device identifier of the terminal device; generating a random encryption code according to the device identifier; and feeding back the random encryption code to the terminal device so that the terminal device encrypts interactive data using the random encryption code after accessing the network. In another aspect, the method includes: transmitting a request for accessing a network to a gateway device, the request includes a device identifier of a terminal device; receiving a random encryption code fed back by the gateway device, the random encryption code is information for encrypting interactive data during the terminal device accessing the network; and encrypting interactive data with the random encryption code.

    METHOD FOR ASSIGNING CHANNELS BASED ON IOT SYSTEM, SERVER BASED ON IOT SYSTEM, IOT SYSTEM AND STORAGE MEDIUM

    公开(公告)号:US20210410116A1

    公开(公告)日:2021-12-30

    申请号:US17355230

    申请日:2021-06-23

    Inventor: Ying Zhang Kai Zhao

    Abstract: A method for assigning channels based on an Internet of Things (IoT) system includes: assigning a first channel to a first gateway, wherein the first gateway is any one of a plurality of gateways; sending a broadcast instruction to the first gateway, wherein the broadcast instruction is configured to instruct the first gateway to send broadcast information on the first channel; acquiring a set of first monitoring information, wherein the set of first monitoring information includes at least one piece of first monitoring information, which includes the broadcast information monitored on the first channel, and the first monitoring information comes from neighboring gateways of the first gateway; determining, based on the set of first monitoring information, a second gateway from the neighboring gateways of the first gateway; and assigning a second channel different from the first channel to the second gateway.

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