DTV_vs._HDTV What_to_buy 5_Great_HDTVs Resolutions 3_ways_to_get_HDTV_Programming Buying_HDTV_guide HDTV_by_Technology HDTV_by_Size   High-Definition television ( HDTV ) refers to the broadcasting of television signals with a significantly higher resolution than traditional formats ( NTSC , SECAM , PAL ) allow. Except for early analog formats in Europe and Japan , HDTV is broadcast digitally,