Display Format: A TV can be equipped with different types of tuners:
NTSC (National Television System Committee) is the broadcast standard analog TV the most widely used in North America. We talk about standard 525 lines, so that actually displays 480 lines. The NTSC standard is, in the coming years, be replaced by new digital television standards.
PAL (Phase Alternating Line), which appeared in the early 60s, is the most widespread standard in Europe. It is characterized by a channel bandwidth wider than the NTSC standard, which allows it to display 635 lines.