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随着广播电视日益高速的发展,视频技术也在发生着翻天覆地式的变化。数字电视技术的发展释放了标清电视(SDTV)技术标准的全部潜力,在不改变电视体系标准的条件下使图像质量比模拟电视有了很大提高。因此在数字电视的基础上要想大幅度提高图像质量就必须改变电视技术标准,增加有效信息量,这就是高清晰度电视。高清晰度数字电视(HDTV)是电视技术的最新发展。
With the rapid development of radio and television, video technology is also undergoing earthshaking changes. The development of digital television technology has unlocked the full potential of standard definition television (SDTV) technology and has greatly improved image quality over analog television without changing the standards of the television system. Therefore, on the basis of digital television in order to significantly improve image quality, we must change the technical standards of television to increase the amount of effective information, which is high-definition television. High Definition Digital Television (HDTV) is the latest development in television technology.