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Transmission method of broadcast quality audio and video based on commercial wireless network

A wireless network and transmission method technology, applied in the field of signal transmission, can solve problems such as low bandwidth, and achieve the effects of overcoming bandwidth bottlenecks, ensuring real-time performance, and reducing costs

Active Publication Date: 2010-03-10
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of the mobile network is that it covers a large area, and the disadvantage is that the bandwidth is relatively Wi-Fi TM lower

Method used

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  • Transmission method of broadcast quality audio and video based on commercial wireless network

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Embodiment Construction

[0022] Examples of the present invention are described below.

[0023] A broadcast-grade audio and video transmission method based on a commercial wireless network, capable of receiving the SDI code stream of a broadcast-grade camera, performing encoding compression, segmentation and dynamic allocation processing, and then concurrently sending the compressed code stream to a destination server through a wireless commercial network. The method is suitable for real-time multimedia data transmission scenarios. The method receives mixed audio and video streams from a broadcast-level camera and performs code stream processing, and at the same time establishes connections with wireless networks or wireless networks of different operators, and concurrently transmits and processes TS code streams through these commercial wireless networks. The networks belonging to different operators may be the same type of network, or different types of networks. Taking three networks as examples, t...

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Abstract

The invention relates to a transmission method of broadcast quality audio and video based on a commercial wireless network. At present, the wireless live rebroadcast technology has great limitations.The method of the invention comprises the following steps: firstly receiving a mixed audio and video steaming in a camera; transmitting the mixed audio and video streaming to a standard encoder; carrying out compression coding on the mixed audio and video streaming in the standard encoder to obtain a compressed TS code stream; processing the compressed TS code stream to obtain a multi-channel codestream; transmitting the multi-channel code stream into an objective server through the commercial wireless network and Internet at real time in a concurrent manner; rearranging and recovering the received multi-channel code stream into a complete compressed code stream by the objective server, and transmitting the complete compressed code stream to the standard encoder; and carrying out decodingand uncompressing processes on the recovered compressed code stream through the standard encoder to obtain the audio data stream and video data stream shot by a broadcast quality camera. The method of the invention can simultaneously switch in multiple commercial wireless networks and Internet, transmits the audio data stream and the video data stream shot by the broadcast quality camera into television stations at real time, thus improving the instantaneity of news.

Description

technical field [0001] The invention belongs to the technical field of signal transmission, and relates to a broadcast-level audio and video transmission method based on a commercial wireless network. Specifically, it involves a broadcast-level audio and video compression encoding for the real-time bit stream captured by a broadcast-level camera, and the processing of dividing and distributing the compressed bit stream, and concurrently transmitting the obtained multiple bit streams through a commercial wireless network method. Background technique [0002] At present, the wireless live broadcast technology used by TV stations is limited to the microwave OB van system. This system is not only expensive, but also inconvenient to move. Therefore, except for major news, TV stations rarely dispatch microwave OB vans. Under normal circumstances, after the interview is completed, the filmed content is directly brought back to the TV station. If the shooting location is far away f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/24H04N19/37
Inventor 陈惠芳杨勇谢磊丁旭东陈晓东王孟孺陈宏周建海陈师亮
Owner ZHEJIANG UNIV
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