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'''EDTV'''とはEnhanced Definition Televisionの略称で、一般的に[[480i]]([[NTSC]])や[[576i]]([[PAL]])などの[[走査|インターレーススキャン(飛越走査)]]とは対照的にそれぞれ[[480p]](NTSC)や[[576p]]のプログレッシブスキャン(順次走査)で表示するための機器や信号、放送方式を指す。通常EDTVは[[標準画質映像|SDTV]]におけるプログレッシブスキャンのものを指し[[高精細度テレビジョン放送|HDTV]]とはみなされないが国によって事情が異なる場合があり、例えばオーストラリアでは576pデジタルTVがHDTVとされる<ref>[http://www.broadcastandmedia.com/articles/ff/0c0276ff.asp SBS jubilant with its 576p HD broadcasts]</ref>。なお日本におけるEDTV放送は[[クリアビジョン]]および[[ワイドクリアビジョン]]である。
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