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最早对下一代电视的理解是从目前的标准清晰度电视过渡到高清晰度电视。高清晰度电视的主要特点一是有临场感,使人有一种身临其境的感觉,这就要求在家庭的最佳观看距离2．7米左右的距离上要有较大的电视屏幕,通常应该在42英寸以上,以便有较宽的视角;二是有较高的清晰度,这就要求每幅画面的扫描线数大约是目前标准清晰度电视扫描线数的两倍,画面更加清晰逼真;三是有较高质量的伴音,通常是立体声或5．1路环绕声,声音效果更具震撼力。看过高清晰度电视以后,如同原来看黑白电视然后再看彩色电视一样有换代的感觉。
The earliest understanding of the next generation of television is the transition from the current standard definition television to high definition television. The main features of high-definition television First, there is a sense of presence, people have a feeling immersive, which requires the best viewing distance of about 2.7 meters on the family to have a larger TV screen, Usually should be more than 42 inches in order to have a wider viewing angle; the second is a higher definition, which requires each screen scan lines about the current standard definition TV scan lines twice the picture clearer Realistic; Third, there is a higher quality sound, usually stereo or 5.1 surround sound, the sound effects more shocking. After watching high-definition television, as the original black and white TV and then look at the same color TV has the feeling of generation.