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Vehicle-mounted video transmission system based on Real Time Protocol (RTP)/RTCP (Real-time Transport Control Protocol)

A transmission system, vehicle video technology, applied in image communication, selective content distribution, electrical components, etc., to overcome network congestion and improve transmission quality

Active Publication Date: 2013-08-14
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the packet loss rate and the length of the GOP are a "chicken-egg" paradox

Method used

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  • Vehicle-mounted video transmission system based on Real Time Protocol (RTP)/RTCP (Real-time Transport Control Protocol)
  • Vehicle-mounted video transmission system based on Real Time Protocol (RTP)/RTCP (Real-time Transport Control Protocol)
  • Vehicle-mounted video transmission system based on Real Time Protocol (RTP)/RTCP (Real-time Transport Control Protocol)

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Embodiment Construction

[0038] The technical solution of the present invention will be further introduced below in conjunction with the accompanying drawings.

[0039] Such as figure 1 As shown, the network transmission control module and some N movable clients jointly construct the entire vehicle-mounted video transmission system of the present invention, and each vehicle-mounted terminal forms a VANET network, and the client is a vehicle-mounted terminal placed in the vehicle. Each vehicle-mounted terminal is equipped with an Intel IPP library, and the vehicle-mounted video transmission system is a client / server mode. Each vehicle-mounted terminal comprises 5 functional sub-modules altogether, and they are video acquisition module, video codec module, information processing module, video playback module, file storage module, and these functional sub-modules are all constructed on the described Intel IPP storehouse, wherein : the video acquisition module is used for the acquisition of video data,...

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Abstract

A vehicle-mounted video transmission system based on an RTP / RTCP is characterized in that a network transmission control module and N movable clients form the whole vehicle-mounted video transmission system; a VANET (vehicular ad-hoc network) comprises each vehicle-mounted terminal; the clients are the vehicle-mounted terminals placed in a vehicle; an IntelIPP base is mounted at each vehicle-mounted terminal; and the vehicle-mounted video transmission system adopts a client / server mode. According to the vehicle-mounted video transmission system based on the RTP / RTCP, as the difference of video compression parameters can influence the final transmission quality, the video compression quality is adjusted in real time according to the packet loss rate detected by the system dynamically. The system can adjust the video transmission quality dynamically.

Description

technical field [0001] The invention relates to a video transmission system in the technical field of vehicle wireless network communication. Background technique [0002] With the development of transportation and information industry, various video applications based on vehicle networks have attracted widespread attention. Vehicle safety assisted driving systems, unmanned vehicle systems, real-time road condition monitoring systems beyond the line of sight, real-time audio and video communication systems, and multimedia entertainment information sharing systems play an important role in ensuring traffic safety, improving traffic efficiency, and enriching people's lives. meaning. The construction of these systems will inevitably involve the encoding and transmission of video on the vehicle network. Video technology has successfully commercialized applications such as video conferencing and video-on-demand in wired and wireless networks. How to achieve smooth video trans...

Claims

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Application Information

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IPC IPC(8): H04N21/643H04N21/6437H04N21/647
Inventor 蒋昌俊张冬冬夏荣艳陈闳中闫春钢何良华
Owner TONGJI UNIV