What Is a Digital Terrestrial Receiver?
Digital terrestrial television receiver (also known as digital terrestrial television set-top box) means that the receiver can receive signals from digital terrestrial transmitters. Because China's digital television includes two types of wired and wireless methods, terrestrial digital television receivers can receive local digital signals without encryption by using their own antennas.
Digital terrestrial television receiver
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- Digital terrestrial television receiver (also known as digital terrestrial television set-top box) means that the receiver can receive signals from digital terrestrial transmitters. Because China's digital television includes two types of wired and wireless methods, terrestrial digital television receivers can receive local digital signals without encryption by using their own antennas.
- National standard
- The national standards for guiding the development of China's television, set-top box manufacturing and related industries-the "General Specifications for Digital Terrestrial Television Receivers" and "General Specifications for Digital Terrestrial Television Receivers" national standards were officially released. It was officially implemented on January 1.
- The audio and video national standard with independent intellectual property rights in our country-AVS (Digital Audio and Video Codec Technology Standard) standard has become a video decoding standard that must be built in China's terrestrial digital television receivers and terrestrial digital television receivers. It is understood that national standards for the General Specification for Digital Terrestrial Television Receivers and the General Specification for Digital Terrestrial Television Receivers stipulate that from the date of implementation of the standard, terrestrial digital television terminal products shall support GB / T 20090.2 (the AVS standard) or GB / T 17975.2 (that is, the MPEG-2 standard), one year after the standard was introduced, it should support the AVS standard. From the date of the promulgation of this standard, various manufacturers can freely choose standards such as AVS or MPEG-2 according to specific circumstances, but after one year of promulgation of the standard, they must support the AVS standard. In view of the fact that all digital TV sets must have terrestrial wireless TV receiving functions, this means that all TV sets sold in the Chinese market and purchased by users within one year will have built-in AVS functions. The receiver (commonly known as a set-top box) will also have AVS capabilities.
- Huang Tiejun, Secretary-General of the AVS Standards Working Group, stated that the national standards of the General Specification for Digital Terrestrial Television Receivers and the General Specification for Digital Terrestrial Television Receivers have AVS as the only standard that must be supported, which means that more than 400 million households in China have Will be able to play video programs in the same format, which will definitely become a milestone in the development of digital television and new media in China. Because of the unification of television and set-top box terminal standards, it not only opens the door for the development of terrestrial digital television, but also provides a unified standard for providing video services to more than 400 million households through channels such as cable, satellite, and the Internet. More than 400 million families can receive unified standard video programs, which will stimulate the competitive development of the film and television industry and cultural and creative industries, thereby achieving a virtuous cycle of unified terminals, content explosion, and service enhancement.
- As China's second-generation source coding standard with independent intellectual property rights, AVS has focused on terrestrial digital TV applications since it became a national standard in 2006. At the beginning of 2007, the AVS Working Group and the AVS Industry Alliance put forward the slogan "AVS ground dual national standard in one step", and cooperated with the national "terrestrial TV dual national standard system" to actively promote the application of AVS in radio and television in various places. In February 2011, Hunan Cable TV Network (Group) Co., Ltd. tendered 44 AVS transcoders and 20 encoders, and Hunan Zhuzhou Sound Screen Wireless Digital TV Network Co., Ltd. tendered 70 AVS TV programs, which opened AVS. Prologue of large-scale provincial applications. AVS has officially launched in Hangzhou, Shanghai and Hunan. The provinces and cities undergoing AVS testing include Anhui, Henan and Wuhan. At the same time, AVS also has a strong and complete industry chain. Dozens of AVS set-top box products have entered the broadcast TV market. AVS test equipment, AVS software and AVS products for content have formed a series.