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美国Ｓａｒｎｏｆｆ公司设计出的ＡＴｈＣ／ＮＴＳＣ转换器，其目的是便于接收北美地面数字电视（ＤｒＦＶ）广播。此设计能下变频接收到高清晰度电视（ＨＤＴＶ）广播信号，并作为标准４８０扫描线标准清晰度电视（ＳＤＴＶ）信号输出。基准设计的硬件结构如下：主要芯片由美
The AThC / NTSC converter, designed by Sarnoff, USA, is designed to facilitate reception of North American terrestrial digital television (DrFV) broadcasts. The design is capable of downconverting high-definition television (HDTV) broadcast signals and outputting as standard 480-scan standard definition television (SDTV) signals. The hardware design of the benchmark is as follows: The main chip by the United States