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Wireless data transmission method and device

A technology of video data and drones, which is applied in the field of wireless communication, can solve problems such as delay and jitter at the frame level, and achieve the effect of reducing delay jitter

Active Publication Date: 2018-09-11
SZ DJI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, the existing schemes only aim to control the average overall delay of a frame group, and cannot solve the frame-level delay jitter caused by dynamic source channel mismatch.

Method used

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  • Wireless data transmission method and device
  • Wireless data transmission method and device

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Embodiment Construction

[0027] The present disclosure will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the present disclosure should not be limited to the specific embodiments described below. In addition, for the sake of brevity, detailed descriptions of well-known technologies that are not directly related to the present disclosure are omitted to prevent confusion to the understanding of the present disclosure.

[0028] figure 1 is a flowchart illustrating a method 10 according to one embodiment of the present disclosure.

[0029] Such as figure 1 As shown, in step S110, time downsampling is performed on an image sequence including a plurality of frames to form a plurality of subsequences.

[0030] figure 2 is a schematic diagram illustrating temporal downsampling of an image sequence according to an embodiment of the present disclosure. exist figure 2 In the example shown, the original image sequence (P0, P1, ...

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Abstract

The present invention provides a wireless data transmission method and device. The method comprises the steps of: performing time downsampling of an image sequence to form a plurality of sub sequences; performing coding of the sub sequences to form sub sequences after coding; and selecting frames to be selected according to the sizes of the frames in the sub sequences after coding and the channelwidth. The present invention further provides an unmanned aerial vehicle and a computer readable storage medium.

Description

technical field [0001] The present disclosure relates to the field of wireless communication technologies, and more specifically, the present disclosure relates to a wireless data transmission method and device. Background technique [0002] At present, how to transmit video stably when the wireless channel or channel bandwidth changes in real time is a hot topic of research and application. For video transmission with such channel characteristics, there are certain problems. First, the source varies with time, and the channel also varies with time. In particular, there are many conditions that affect the wireless channel, such as the distance between the transmitting and receiving devices, their relative positions, whether there is occlusion, instant electromagnetic environment interference, and so on. In addition, both the source and the channel vary independently of each other and are difficult to predict, which makes it difficult to match the source coding and channel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18H04N21/2343H04N21/2383
CPCH04N7/18H04N21/2343H04N21/2383B64U2101/30H04N19/587H04N19/39H04N19/172H04N19/146H04N19/132H04N19/59
Inventor 朱磊
Owner SZ DJI TECH CO LTD
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