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    WORKING WIRELESS COMMUNICATION CHANNEL SELECTION BASED ON SPECTRAL ESTIMATION
    1.
    发明申请
    WORKING WIRELESS COMMUNICATION CHANNEL SELECTION BASED ON SPECTRAL ESTIMATION 审中-公开

    公开(公告)号：US20200077420A1

    公开(公告)日：2020-03-05

    申请号：US16674520

    申请日：2019-11-05

    申请人： SZ DJI TECHNOLOGY CO., LTD.

    发明人： Naibo WANG ,  Wei FAN

    IPC分类号： H04W72/12 ,  H04W72/04 ,  H04W72/08 ,  H04W16/14 ,  H04L27/00 ,  H04L5/00

    摘要： A method for selecting a working wireless communication channel based on spectral estimation includes determining a sub-set of wireless communication channels from a set of wireless communication channels of a working frequency band. A superposition of channel frequency bands of the wireless communication channels in the sub-set covers the working frequency band. The method further includes performing a noise level measurement on each wireless communication channel in the sub-set to obtain a spectral estimation result for each wireless communication channel in the sub-set. The method further includes calculating a spectral density distribution across the working frequency band based on the spectral estimation results of the wireless communication channels in the sub-set. The method further includes selecting, according to the spectral density distribution across the working frequency band, one of the wireless communication channels from the set as the working wireless communication channel.

    METHODS AND SYSTEM FOR HOPSET SELECTION
    2.
    发明申请
    METHODS AND SYSTEM FOR HOPSET SELECTION 审中-公开

    公开(公告)号：US20200067566A1

    公开(公告)日：2020-02-27

    申请号：US16671878

    申请日：2019-11-01

    申请人： SZ DJI TECHNOLOGY CO., LTD.

    发明人： Wei FAN ,  Naibo WANG

    IPC分类号： H04B1/7143 ,  H04B1/715 ,  H04B17/336 ,  B64C39/02 ,  G05D1/00

    摘要： A computer-implemented method for communication includes obtaining power data associated with a plurality of channels of a frequency band, predicting an error rate for each of the plurality of channels based at least in part on the power data, and selecting a hopset of channels for frequency hopping from the plurality of channels based at least in part on the predicted error rates for the plurality of channels.

    IMAGE PROCESSING METHOD AND DEVICE
    3.
    发明申请
    IMAGE PROCESSING METHOD AND DEVICE 审中-公开

    公开(公告)号：US20190320184A1

    公开(公告)日：2019-10-17

    申请号：US16455283

    申请日：2019-06-27

    申请人： SZ DJI TECHNOLOGY CO., LTD.

    发明人： Lei ZHU ,  Ming GONG ,  Ning MA ,  Wei FAN ,  Hao CUI

    IPC分类号： H04N19/166 ,  H04N19/159 ,  H04N19/17

    摘要： An image processing method includes a transmitting terminal receiving a feedback message sent by a receiving terminal. The feedback message indicates a reception state of a received image frame sent by the transmitting terminal and received by the receiving terminal before the receiving terminal sends the feedback message. The method further includes acquiring a target image frame, encoding the target image frame according to a preset error correction mechanism to generate encoding data of the target image frame in response to the feedback message indicating a reception error, and sending the encoding data of the target image frame to the receiving terminal.

    IMAGE PROCESSING METHOD AND DEVICE
    5.
    发明申请
    IMAGE PROCESSING METHOD AND DEVICE 有权

    公开(公告)号：US20210136388A1

    公开(公告)日：2021-05-06

    申请号：US17121289

    申请日：2020-12-14

    申请人： SZ DJI TECHNOLOGY CO., LTD.

    发明人： Lei ZHU ,  Ming GONG ,  Ning MA ,  Wei FAN ,  Hao CUI

    IPC分类号： H04N19/166 ,  H04N19/17 ,  H04N19/159

    摘要： An image processing method includes sending, by a receiving terminal to a transmitting terminal according to a feedback time interval, a feedback message indicating a reception state of a received image frame sent by the transmitting terminal and received by the receiving terminal before the feedback message is sent; upon detecting a reception error of a target image frame before a first time point, sending a first feedback message indicating the reception error to the transmitting terminal at the first time point; and upon receiving, after the first time point and before a second time point, encoded data of the target image frame obtained according to an error correction mechanism from the transmitting terminal, sending a second feedback message indicating a correct reception to the transmitting terminal at the second time point. A time period between the first and second time points equals the feedback time interval.