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Transmission method of audio and video information of vehicle equipment

A transmission method and technology for in-vehicle equipment, applied in transmission systems, digital transmission systems, image communication, etc., can solve problems such as high cost, inability to take into account hardware cost and transmission efficiency and stability, and achieve rational utilization of bandwidth, reduce delay, and improve The effect of transmission efficiency

Active Publication Date: 2019-05-14
XIAMEN YAXON NETWORKS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above approach, the method of using special equipment to implement efficient and stable transmission is expensive and cannot take into account both hardware cost and efficient and stable transmission

Method used

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  • Transmission method of audio and video information of vehicle equipment
  • Transmission method of audio and video information of vehicle equipment
  • Transmission method of audio and video information of vehicle equipment

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Embodiment Construction

[0024] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0025] Wireless vehicles have cost problems and work in harsh network environments. To achieve fast and reliable transmission, it is necessary to consider the limited hardware factors on the one hand, and use the corresponding transmission technology on the other hand. The present invention proposes just at this problem.

[0026] Specifically, in the method for transmitting audio and video information of a vehicle-mounted device according to the present invention, the wireless vehicle station is used as a sender, and the media center is used as a receiver, and the two are connected through a wireless network.

[0027] The wireless car station calculates the size of the protocol window according to the available memory size, CPU capability and bandwidth, and loads the data into the memory according to the protocol window for circular sending buffer; w...

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Abstract

The invention discloses a transmission method for audio and video streaming media information of vehicle-mounted equipment. A hardware system comprises a wireless station and a media center which are connected through a wireless network. The method comprises the steps that the wireless station starts to continuously transmit protocol packets, stops transmitting the protocol packet after data in the size of a protocol window is completely transmitted, and transmits a continuous transmission confirmation instruction, wherein the continuous transmission confirmation instruction contains the largest packet sequence number of the protocol packets of the current protocol window; the media center receives the protocol packets, parses the protocol packets and computes the arrangement sequence of the protocol packets according to packet sequence numbers; when the media center receives the continuous transmission confirmation instruction, the media centers determines whether complementary transmission is required in the round or not according to the received packet sequence numbers of all protocol packets of the current protocol window and the largest packet sequence number in the continuous transmission confirmation instruction and determines the sequence numbers of the protocol packets to be complementarily transmitted, wherein the information is contained in the feedback instruction of the continuous confirmation instruction; and when the media center receives a transmission ending instruction, the media information transmission of this time is ended. The transmission method has the advantages that the bandwidth is reasonably utilized and the transmission efficiency is effectively improved.

Description

technical field [0001] The present invention relates to a method for transmitting audio and video information of a vehicle-mounted device in the field of wireless communication, in particular to a streaming media communication technology for a mobile embedded device, in particular to a method for realizing rapid and reliable transmission of audio and video information of an embedded vehicle-mounted device on a wireless network and system. Background technique [0002] The design of the current embedded vehicle equipment (hereinafter referred to as wireless vehicle) needs to plan the hardware cost, and there are problems such as limited resources such as CPU, memory, and bandwidth, and limited I / O read and write speed. The wireless transmission of embedded vehicle equipment has the following characteristics: 1. The traffic is limited and the cost is high; 2. The transmission is fast and sometimes slow, and the bandwidth is unstable; 3. The signal is sometimes absent, making w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L29/06H04W28/10H04N21/643
Inventor 张麒林秋芳黄恒强
Owner XIAMEN YAXON NETWORKS CO LTD
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