最近几年来,国内外的数字电视(DTV)领域都以很快的速度发展,主要表现在如下几方面,即用户对DTV 技术、广播、产品的认识与购买的心理准备,技术标准制订与出台,电视台数字系统与节目准备,制造商的生产准备,以及元器件、仪器和原材料的供应等多方 In recent years, the field of digital television (DTV) both at home and abroad has been developing at a rapid pace, mainly in the following aspects: the user’s preparation for the understanding and purchase of DTV technology, radio and products, the formulation and promulgation of technical standards , Digital system and program preparation for television stations, production preparation by manufacturers, supply of components, instruments and raw materials, etc.