Digital Coding Technique Applied Research In The Field Of Video And Audio

Science and technology develops rapidly in the 21 th century, especially technologies of computer, communication and internet, the audio-visual information technology makes people exchange, search and transfer information more efficienctly, which is the perfect work of digital coding technology.This paper consists of six chapters,as listed below:Chpt I, isagoge:introduces digital coding technology in Audio/Visual fields, of its significance in application and its developments abroad.Chpt II,standard and application:standard is always the leading edge of digital coding technology, for example MPEG-4 and MPEG-7,best understanding the thoughts and advantages of is designation can do much help using the media file formats as examples in application.Chpt III,design craft of multimedia resource database:this is one of my recent work in which thoughts of MPEG-7 were used to construct ultimedia resource database and classify types in detail.Chpt IV,design craft of multimedia teaching material database:another apllied work, in which audio and visual data is classified in term of its apllication.Chpt V,technology craft of Video On Demand:it is a working example of streaming audio/video data, in which advantages of MPEG-4 are considered in system cinf iguration and designation.Chpt VI, general review of work on this paper.