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美国消费电子协会近日公布了数字电视的详细定义，规定了高清晰度电视和标准清晰度电视必须达到的指标，并提出了增强清晰度电视的新概念。根据该协会公布的标准，数字电视分为高清晰度电视（ＨＤＴＶ）、增强清晰度电视（ＥＤＴＶ）和标准清晰度电视（ＳＤＴＶ）三大类。高清?
The Consumer Electronics Association of America recently released a detailed definition of digital television that sets the metrics that HDTVs and standard definition TVs must meet and proposes new concepts for enhanced definition television. According to the standards promulgated by the Association, digital television is divided into HDTV, EDTV and SDTV. HD?