1989年,美国联邦政府机构、国会、行业协会、工业界和大学等,几乎全都卷入了高清晰度电视技术政策的辩论。其涉及面之广,持续时间之长是近几年少有的。这场辩论涉及到高清晰度电视技术的发展前景、市场的潜在规模以及对其它技术领域的作用和影响等,因此,纵观这场辩论的前前后后,有助于我们了解美国当前的技术、经济、贸易和国防安全政 In 1989, the U.S. federal government agencies, parliaments, industry associations, industry, and universities were all involved in the debate on high-definition television technology policy. It involves a wide range, the long duration is rare in recent years. This debate involves the development prospects of high-definition television technology, the potential size of the market, and its role and impact on other technology areas. Therefore, reviewing this debate before and after will help us understand the current technology of the United States. , economic, trade, and defense security