College】 【weak features of digital broadcasting and policies of China --- Power By 【Network】 weak home.

<br> Federal Communications Commission, Mr. Robert, a Beijing press conference on the U.S. communications management situation. .He spoke of a change in the U.S. broadcasting industry. .He said: We found that the number of radio broadcasts onto the Internet, in Washington, the Internet, you can listen to the radio in California. .Mr. Roberts is talking about this broadcast form of DAB (DigialAudioBroadcasting), we call "digital broadcasting." .Digital broadcasting is not only in the United States and in Europe, Japan, China and other countries and regions have appeared. .<BR> First, the characteristics of digital broadcasting <BR> <BR> the emergence of the first digital broadcasting is due to the expansion of the digital economy. .Two or three years ago, according to estimates, by 2005, the world of e-commerce revenues will total more than 1 trillion, but now that figure in 2002 to 2003 can be achieved. .Internet communications in the United States doubling every 100 days, the information technology sector in the U.S. real GDP growth in the contribution of 1 / 3. .<BR> <BR> United States is now about 60% of the people through the family, schools, libraries and Internet units, the average daily access time is 1 hour and 20 minutes. .Quoted the words of Mr. Robert is: the Internet is now the time to read books and magazines of the time equivalent to more than double, close to the people listening to the radio of the time, almost equal to the time people watch television. .① While the United States increased the total number of the Internet, but share in the world has declined, as many countries catch up, including China. .<BR> <BR> Second, the digital broadcasting is broadcasting a digital economy to develop their own coping styles and opportunities. .Digitization and integration of digital technology lead, breaking the traditional industry segmentation. .The boundaries between industry and the industry and the increasingly blurred distinction, leaving only the information of the unit - bit, but is a bit hard to tell who is also broadcast bits, or bits of the computer. .In fact they use the Internet regardless of the customer on the phone line, or in the cable TV cable, they care about is whether they can require the bit where, there is the bit where. .Fusion of fuzzy boundaries and industry is good for the broadcasting industry. .Because the broadcast is the point opposite the flow of information, it is subject to fewer restrictions on the spectrum, radio broadcast what it hears what the audience had no choice and control. .This is compared with the cable becomes less flexible, more cable spectrum available and can provide users with more choices, the user can have more control (such as through paid programming), it is a point on the multi-information flow .point. .However, the Internet will change everything. .Internet traffic is any to any, could point to point, you can point across, you can also face the point. .Users can issue can receive, more flexible. .If the broadcasting industry to digitally smooth flow of information will be greatly improved, the disadvantage will be changed. .Therefore, development of digital broadcasting industry into a great opportunity, can seize the opportunity to access to development, to see broadcasters own. .<BR> <BR> Addition to the above mentioned features, digital broadcasting has the following features: <BR> <BR> (1) digital radio technology to broadcast not only to provide voice services, but also on the text, data ., images, graphics, sound and software to provide two-way interactive services. .Broadcast media and the integration of information and communication services, can broadcast high-value-added business, to provide multiple services to improve the industrial environment. .<BR> <BR> (2) not only make the existing broadcast digital broadcasting system has sophisticated three-dimensional surround sound field in sound quality, but also with partial channel error correcting codes technology could reduce production costs, and time domain / frequency .domain interleaving (interleavingintime / frequency), you can have fixed or mobile receivers in the situation better. .<BR> <BR> (3) With digital transmission can save more energy, but also stimulate the demand signal receiver, more importantly, increased production of radio programs, access to international markets has also increased. .<BR> <BR> Digital broadcasting has many advantages, but many questions. .Focus on key issues in the consumer price increase, non-broadcasting services to increase the main industry, the program is relatively lower, and so creative, so DAB market development work and the Government's policy is particularly important, they determine the future of digital broadcasting. .<BR> <BR> Two countries to implement digital broadcasting policy <BR> <BR> some European countries in 1987 to form the EURKA - 147 community organizations, aimed at the development of digital broadcasting systems. .Geneva in 1988, WARC (WorldAdministrativeRadioConference, the World Advisory wireless session), conducted the first DAB test. .After years of promotion, American and European countries, Canada and Asian countries have started to develop digital broadcasting system, in which Britain's most successful. .<BR> <BR> Present, the digital broadcast media in the promotion of the Government of Japan has become radio features to enhance the realization of an important issue. .Related to the Japanese government held a meeting to analyze the viewer how digital radio can bring the benefits (such as the mass audience can choose programs for the elderly and disabled to provide a complete service, mobile communication service is more stable, etc.), but also pay attention to .to the economic problems. .Digital broadcasting is expected within ten years, nearly 212 trillion yen in revenue, nearly 711 million people for the job. .In addition, DAB radio program facilitates international exchanges and promote international understanding, in the country would help to create a highly developed information society. .These benefits have strengthened the Japanese government's determination to implement digital broadcasting. .Japanese Government to formulate a timetable for ending analog broadcasting to analog broadcasting in 2010 to stop time. .In the buffer period (1998-2009), the Government every three years a comprehensive survey of the popularity of digital broadcasting in each region the situation. .② <BR> <BR> developed by the U.S. digital broadcasting system is for FM / AM broadcast band design, including the same frequency band (IN-Band  On-Channel  referred to IBOC) digital broadcasting system and the band o .frequency (In-Band  Adjacent-Channel, referred to as IBAC) digital broadcasting system. .Band (In-Band) system has the advantage of compatibility with existing radio systems to address the problem of small channels do not need to re-planning channels. .U.S. government and some new digital radio communications change the attitude is: not a new thing to the old limit. .Their strategy is to ensure sufficient market competition, they believe the market will have its own regulatory role. .However, the Government also requested new network services provided, with the capital restructuring to reduce prices, and to ensure the Rural Areas, in order to protect the public interest. .③ <BR> <BR> Third, the development of digital broadcasting in China countermeasures <BR> <BR> a new communication technologies must rely on certain policies, regulations, markets and organizations. .Therefore, the promotion of digital broadcasting, and not just as a technical problem. .And norms to ensure the development of digital broadcasting, the corresponding measures should be followed. .<BR> <BR> (1) the formulation of laws: The Government should establish a complete regulations and management practices, on the radio engineering approval and specifications. .<BR> <BR> (2) technical feasibility of the experiment: reference to foreign experience to pilot test as a starting point, that the operation of digital broadcasting in the problems that may arise, and find ways to deal with these issues. .<BR> <BR> (3) business content of the plan: the future supply of general programming broadcast in addition, it can also provide voice, data, information, telecommunications and other multimedia services, perhaps even to personal communications services, so the content in the business .should be planning. .<BR> <BR> (4) to adjust the size of the internal organization of radio stations: the traditional radio requires more manpower. .A broadcast control network around the clock requires a person familiar with the operation of the equipment. .After digitization, the use of automatic Broadcasting System, only one set of persons skilled in the computer can manage all of the broadcast system. .The larger stations, the more labor savings. .<BR> <BR> (5) software market support measures: to accelerate the digital program production equipment, to encourage the establishment of specialized subjects related to school, to nurture digital programming talent. .<BR> <BR> Sebang strictly managed by ISO9001 quality control system. .Education industry in China in 2002 introduced the first IP network broadcast products, and then extended to the entire public broadcasting <BR> in the public broadcasting industry to create and establish a good brand image, and with the industry to establish a number of well-known brands <BR> .strategic partnership. .Our goal is to become the SPON network of digital audio products, audio field of international famous brands. .<BR> Core competitive products: IPAudio proprietary audio technology platform digital network (to provide product customization services industry) <BR> <BR>.