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一、高清电视“三要素”和“两核心”1.“三要素”是指:由于我国高清电视目前尚未发布有关标准,所以我们对高清晰度这个词还难作明确界定。但根据美国电影电视工程师协会公布的高清标准格式,数字高清视频有:720P(1280×720逐行扫描)、1080i(1920×1080隔行扫描)和1080P(1920×1080逐行扫描)三种规格,其中1080P 做认为是数字电视的顶级显示格式;其次,高清标准要求电视屏幕的长宽比为16:9,传统的4:3比例的电视虽然可以显示16:9内容,但图像要经过压缩调整,不能成为高清电视:第三,高清电视要显示高清内容必须配备 DVI 或者 HDMI数字多媒体接口,才能接驳高清视频播放设备。
First, the high-definition television “three elements” and “two core” 1. “Three elements” means: As China’s high-definition television has not yet released the relevant standards, so we are hard-pressed to make a clear definition of the word high definition. However, according to the HD standard format released by the American Society of Motion Picture and Television Engineers, digital HD videos include three specifications of 720P (1280 × 720 progressive), 1080i (1920 × 1080 interlaced) and 1080P (1920 × 1080 progressive) Among them, 1080P is considered as the top display format of digital TV. Secondly, the HD standard requires the aspect ratio of the TV screen to be 16: 9. Although the traditional 4: 3 TV can display 16: 9 content, the image undergoes compression adjustment , Can not become high-definition television: Third, high-definition television to display high-definition content must be equipped with DVI or HDMI digital multimedia interface in order to access high-definition video playback equipment.