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数字电视继承了模拟电视的原理和当代数字技术成果,并在此基础上发展起来,技术上比模拟电视有质的进步。具体对老百姓来说,数字电视提高了电视的清晰度、灵敏度、可增加几百套节目,在实现双向沟通和高性能价格比等方面更具优越性。数字电视的清晰度清晰度是电视机的重要质量指标。清晰度代表了电视屏幕可显示的信息量及质量,显示器件的像素数量是可显示信息的重要基础,清晰度和电视的扫描行数、摄像管像素、显像管像素、画面的宽高比以及传输带宽等多种因素有关,清晰度单位是电视线数简称“线”数。电视屏幕显示的线数越多,则清晰度就越高。
Digital television inherits the principle of analog TV and the achievements of contemporary digital technology. On the basis of this, digital television has developed and technically made qualitative progress over analog TV. Specifically for the people, digital television to improve the clarity of the television, the sensitivity can be increased by hundreds of sets of programs, in achieving two-way communication and high performance and low cost more advantages. The clarity of digital television clarity is an important quality indicator of the television. Clarity represents the amount and quality of information that can be displayed on a television screen. The number of pixels in a display device is an important basis for displaying information, clarity and the number of scanning lines on the television, camera pixels, picture tube pixels, picture aspect ratio, and transmission Bandwidth and other factors, the definition unit is the number of television lines referred to as “line ” number. The more lines displayed on the TV screen, the higher the definition.