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(1) Multimedia technology is the interface technology of China's national economic informationization project, and is an important part of the construction information network;
(2) Multimedia technology is a key technology for the development of China's computer industry;
(3) Multimedia technology is to solve high-definition television (HDTV), conventional television digitization, interactive television (ITV-INTERACTIVE TV), VOD-VIDEO ON DEMAND, multimedia e-mail (ME-MAIL MULTIMEDIA E-MAIL) , distance education, telemedicine, home office, home shopping, three electricity integration and other issues of the best methods;
(4) Multimedia technology is the transformation of traditional industries, especially advanced technologies such as publishing and printing, film and television, advertising and entertainment. Such as China's printing industry, the annual output value of nearly 100 billion yuan, can use electronic technology to achieve electronic, including electronic typesetting system. There will be a huge market for electronic printing systems and electronic publications.
Multimedia software development technologies include: multimedia database development technologies; multimedia communications (video conferences, CSCW (computer-supported collaborative work system), distance education, telemedicine, and (ME-MAIL) development technologies;
Multimedia book tool development technology; multimedia application software and multimedia electronic publication development technology.
(II) Main technical content
1. Main technical and economic indicators (1) Multimedia database and multimedia information management system.
Provides storage and management of multimedia information; provides multimedia information retrieval, query capabilities (content-based retrieval and query); can be implemented on multimedia hardware and software support platforms; and has data access capabilities in heterogeneous network environments.
(2) Multimedia communications.
Complies with the network standard ITV-TH. 320 (ISDN), H. 324 (phone line), H. 323 (Local Area Network), MPEG-(I, II), X400, etc.; with multimedia conference management, multimedia electronic blackboard, multimedia document production capabilities and multimedia e-mail management.
(3) Multimedia production tools.
Good programming environment: basic program flow control and testing tools; super connectivity; connection and triggering of static objects and time-based dynamic data objects; multimedia data I/O capabilities; editing and animation, video and audio; The connection of the program.
(4) Multimedia application software and electronic publications.
2. Key technologies and technical difficulties Research of multimedia data models; Expansion of multimedia communication protocols; Description and implementation of multimedia information synchronization technologies; Compression coding and real-time processing technologies of multimedia data.
(III) Current Situation at Home and Abroad The American Computer Association (ACM) has held a multimedia international academic conference (MULTIMEDIA93.ACM-97.) annually since 1993. The British Computer Society (BCS) also holds a multi-media international conference. DEC has established a specialized multimedia education and entertainment development organization; the world's number one computer company IBM has published e-books for children; the world's largest software company MICROSOFT has distributed encyclopedias through CD-ROM; movie kingdom Hollywood film and television Publishers are also involved in multimedia production. They use multimedia technology to produce films and videos, and use nonlinear editors to stage production. The Chinese Computer Society and the Multimedia Committee of the China Graphics and Graphics Society have held a national multi-media academic conference every year since 1992. Research institutes and production companies have participated. Department of Computer Science and Technology of Tsinghua University, Yinhe Company, and Ferris Company have developed multimedia writing tools and sold them on the domestic market; Tsinghua University has also developed enterprise multimedia terminals and initially has video conferences. Computer-supported collaborative editing and multimedia e-mail functions; Northeastern University’s electronic document systems and multimedia geographic information systems are also well sold in the domestic market.
(d) Domestic and foreign markets predict rapid development of multimedia software, and the market capacity will gradually expand. Taking the electronic publication market as an example, it was US$ 786.1 million in 1994 and US$ 1.5 billion in 1995. Among them, 44% are in the commercial category, 34% in the education category, and 23% in the consumer category. It is predicted that the revenue of European multimedia publications will be US$453 million in 2000 and US$2.077 billion in 2005. In 1996, the sales of multimedia software in China reached 304 million yuan, an increase of 74.7% over 1995. The areas with more applications are information management, auxiliary teaching and network applications, of which information management accounts for 37.95%, assisted teaching accounts for 29.55%, and web applications account for 22.05%. Recently, the Department of Archives and Computer Science of Tsinghua University produced two CD-ROMs for the People's Bank of China. It describes the situation of more than 10,000 financial institutions in the country, together with financial laws and regulations totalling 6.5 million words and more than 20 minutes of video. And 2 to 3,000 picture charts, estimated output value up to 50 million yuan.
(5) Development Trends (1) In addition to products originally sold in the domestic market, multimedia information management systems, multimedia-assisted education, multimedia-aided design, and multimedia electronic summarization systems, etc., in addition to further promotion and sales, multimedia conference systems and computer collaborative editing , collaborative work systems, distance education, teletherapy and virtual reality and other international advanced multimedia applications have also started.
(2) Multimedia electronic publications that apply China's national conditions and cultural habits, CAI (Primary and Secondary Education Software), and entertainment game software will develop rapidly.
(3) China's multimedia home and business markets will go hand in hand and promote each other. The home and business markets for learning purposes will become an important driving force.
Construction may include several types of wood; lumber (timber), plywood, engineered woods, etc. For some purposes, decorative woods are used.
Boxes and crates are not the same. If the sheathing of the container (plywood, lumber, etc.) can be removed, and a framed structure will remain standing, the container would likely be termed a crate. If removal of the sheathing resulted in there being no way of fastening the lumber around the edges of the container, the container would likely be termed a wooden box.
The strength of a wooden box is rated based on the weight it can carry before the cap (top, ends, and sides) is installed. "Skids" or thick bottom runners, are sometimes specified to allow forklift trucks access for lifting.
Performance is strongly influenced by the specific design, type of wood, type of fasteners (nails, etc.), workmanship, etc.
Some boxes have handles, hand holes, or hand holds.
Multimedia Software Technology
(I) Overview Multimedia technology enables computers to have the ability to comprehensively process sound, text, images, and video information. It greatly improves the man-machine interface through rich audio, visual, and graphical information, as well as convenient interactivity and real-time performance. The use of computers has improved, opening the door for computers to enter all areas of human life and production. Therefore, it is of great significance to develop our multimedia technology as soon as possible and form a multimedia industry.