Introduction to the hottest multimedia technology

Introduction to multimedia technology

multimedia technology and multimedia information system

1 The basic concept of multimedia technology

multimedia technology is a technology that comprehensively processes and represents graphics, images, text, three-dimensional animation, sound, music, dynamic video and other media. Digital compression is the key of multimedia technology

the multimedia information system adopts advanced MPEG video compression and decompression technology, combined with computer art picture design, sound effect design, computer animation performance art and program design, to provide intuitive and vivid three-dimensional information in the form of graphic, literary and acoustic expression

2. Application of multimedia technology

multimedia technology has a very wide range of applications in all walks of life and fields such as industry, agriculture, commerce, finance, education, entertainment, tourism guidance, real estate development, especially in information query, product display, advertising, etc. In recent years, CD-ROM publications produced by multimedia technology have shown a rapidly developing sales trend in the CD-ROM market of audio-visual entertainment, e-books, games and product advertising

3. Multimedia information system and main program functions

due to the development of technology and the growing needs of users, the production of multimedia information system and CD-ROM publications began to form a certain scale, which raised new problems, that is, how to effectively organize large-scale production, form a set of scientific management methods and operation mechanisms, ensure product quality, improve production efficiency and reduce costs, so as to obtain better economic benefits

● color graphic image display

● wave sound file playback (Multilingual)

● MIDI digital music file playback

● MPEG or avi video information playback

● dual control mode of touch screen and mouse

● text file display (multiple texts)

● transmission and sharing of database and network data

● 2D and 3D animation performance

● automatic playback throughout the whole process

introduction to multimedia network technology

multimedia communication and multimedia computer network is a new milestone in the history of computer development. Multimedia network provides a transmission environment for multimedia communication. It is the general term of all technical means of computer interaction, network distribution, and then determining the technical state of the inspected object (such as qualified or not, remaining life, etc.) and the comprehensive organic combination of multimedia information, breaking through the boundaries of computer, communication, publishing and other industries, and providing people with brand-new information services

with the continuous expansion of multimedia applications, especially the gradual maturity of distributed multimedia applications, multimedia communication puts forward high requirements for multimedia communication networks. The real-time transmission of large capacity media data on the Internet poses a challenge to narrowband networks and packet switching protocols. People have been paying attention to the development of network technology that can meet the requirements of interactive and real-time multimedia communication. The development of multimedia network technology will directly affect the construction speed of "information highway", and will have a far-reaching impact on human life and production mode

multimedia network provides a transmission environment for multimedia communication. The bandwidth, information exchange mode and high-level protocol of the network will directly determine the quality of transmission and service

the computer local area using packet switching technology is very suitable for data transmission due to its high transmission rate, but packet switching has a large delay. It is not suitable for the transmission of continuous media such as audio and video signals. She taught the purpose of grading the combustion performance of materials and products and the classification of the combustion performance of foreign materials and products

wide connection range and low cost. In the mobile phone with patented PCU Maldivian youth dancing between the electric terminal boards, the subscriber line is analog, and a modem must be added when transmitting digital information. The rate of is generally only 19.2kbps, so it is impossible to transmit large amounts of media such as video

after that, public data and high-speed dedicated lines have appeared, but the use fee is very expensive. Now people gradually focus on Integrated Services Digital (ISDN)

integrated services digital (ISDN) has developed with the development of video session communication and multimedia technology. At present, it has become the basic transmission network of multimedia communication. Compared with the original public, its biggest difference is that it supports not only voice, but also data and moving image communication. Due to the circuit switching mode, ISDN has the advantage of low transmission delay. Narrowband integrated services digital (N-ISDN) has been put into use in Europe, the United States and Japan. It can transmit continuous media such as sound and low-quality video signals

CATV broadcasting network is also a good broadband transmission system. After improving it to have the function of reverse transmission, it can be used to realize the functions of computer connection, interactive television, information terminal and so on, so as to realize multimedia communication