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Analysis of digital TV standard

In Electronic Infomation Category: A | on April 13,2011

Digital television standard is used in digital television video and LT1086CT datasheet and audio samples, compression formats, transmission formats and LT1086CT price and service information requirements.

Mainly three kinds of currently more mature standard that the U.S. ATSC (Advanced Television Systems Committee) standard, the European DVB (Digital Video Broadcasting) standard and LT1086CT suppliers and Japans ISDB (Integrated Services Digital Broadcasting) standard.

Format each of them, but also can be divided into satellite transmission, cable transmission and terrestrial transmission of 3 different ways. In either format, the video compression technology they have adopted the MPEG-2 standard, but in the U.S. and Europe, and the difference between standard analog TV, for compatibility, their Video Sampling format there are also differences, mainly the line and column resolution and the field frequency and so on. In the digital TV signal transmission, satellite transmission generally use QPSK modulation, QAM cable transmission modulation techniques commonly used, but the terrestrial transmission technology is used in a different format there are significant differences, such as the U.S. ATSC VSB modulation is used in technology, and Europes DVB and Japans ISDB OFDM modulation technique is used. Service information is carried in the digital TV value-added services in the data used in the United States in the ATSC PSIP standard part and the European DVB standard, respectively, in the SI part of the provisions of their own service information in the digital TV format. China is also currently actively developing its own digital TV system.

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