What is HDTV, and what is the difference between HDTV and regular TV?
HDTV means High-Definition Television, in which SDTV(regular tv) means Standard-Definition Television. In both types of Televisions, Lines or Pixels make up the Picture. HDTV has a higher resolution then SDTV. In SDTV there are 480 or 576 lines or pixels making up the picture. In HDTV there are 720 or 1080 lines or pixels making up the picture. Since HDTV has more lines making up the picture making up the TV screen HDTV will look better, but many factors depend on if you need HDTV or SDTV: Screen Size? Type of Reception? Blu-Ray or HD-DVD Player? Screen size is a factor because if you have a really small screen 480 lines is pretty much all you need, but if you have a large screen a lower amount of lines will not look good and you will probably need at least 720 lines. Type of reception matters because most cable at this time is not in HD at this point, most of them are still broadcasting at 480 lines, but Blu-Ray and HD-DVD are both capable of displaying up to 1080 lines. Digital TV is
