In a broad sense, digital television is digitization of tv method. It refers to the Tv type that digital tv signals are utilized in all links from studio to emission, transmission and reception, or signals of the program are all transmitted via digital flow consisting of and 1 strings. Digital televisions have much less signal loss and good reception impact.
On March 29, 2006, the Ministry of Sector and Data Technology of the People’s Republic of China formally issued 25 DTV getting finish requirements. On August 18, 2006, the Standardization Administration of the People’s Republic of China issued terrestrial DTV transmission requirements. On December 5, 2009, UTI machine-card separation standards have been established. By then, China’s DTV regular program had been generally formed.
In 2008, terrestrial DTVs were launched in 8 cities in China, and higher-definition and common-definition DTV applications had been broadcast, which marked that China’s terrestrial analog televisions started to transform into terrestrial digital televisions. In 2010, China’s terrestrial digital Tv approach continued accelerating, and simulcast of analog and digital televisions was realized. In 2010 H1, terrestrial digital televisions have been place to use in all Chinese cities above prefecture level, exactly where several sets of regular-definition and high-definition applications were broadcast. It is predicted that terrestrial DTV coverage in cities above county level will be generally realized in China in 2015.
According to the regulations of China’s State Administration of Radio Film and Television, analog television broadcast will be ceased in 2015. With the method of schedule time, China’s digital television transformation accelerates. And the quantity of China’s cable DTV subscribers developed from 190,000 in 2003 to 61.99 million in 2009.
In addition to cable DTV, China’s terrestrial DTV, satellite DTV and IPTV all create rapidly.
In China, development of terrestrial DTV positive aspects from substantial growth of demand for mobile DTV stimulated by boost in transportation automobiles such as bus and subway. Only in 1st-tier cities like Shanghai, Beijing and Guangzhou possessing tens of thousands of buses can terrestrial DTV win income in bus field and maintain operations by marketing revenue.
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