?????????? ??????? ??? ?????????????????????? ????????????????? ??? ??????????

???????????? HDTV, ?????????????????????????? ?????4?????	???????????? SDTV, ( ?????????????????? )

??????????????????? ( High-definition television ??? HDTV) ???? ???????????????? ?????????????????? , ?????????????????????????? ????????????????? 1920×1080 ?????? (16:9), ????? ?????????????????? ?????????????? 720×576 ?????? ( PAL ).