Chinese experts have appraised and approved a homegrown sending-receiving system for digital video broadcasting in Beijing on Wednesday.

The system, based on digital coding and decoding technology known as AVS, is backed by the Information Ministry, and was co-researched by four institutions and companies based in Beijing and Shanghai.

Experts said that with the approval of the technology, China has developed a comprehensive AVS-based digital system for video broadcasting that involves program producing, broadcasting and receiving.

The technology has involved a couple of innovations that second-generation audio-video coding technology does not have, which paves the way for China to participate in global competition and scale industrialization of the technology.

The system can realize all the functions of digital video broadcasting while doubling or tripling the coding efficiency of MPEG-2 technology and reducing 30-50 percent computing cost, according to experts.

The Chinese Academy of Sciences (Institute of Computing Technology established the Audio and Video Coding Standard Work Group of China in June 2002 and tried to develop technologies with its own intellectual property.