Fire-wire - (see IEEE 1394)
HDTV - (High Definition TV) - A TV that displays 1280x720 pixels or better.
NTSC - (National Television System Committee technical standard) - This is analog TV invented in 1946. NTSC has 525 lines (483 visible) interlaced, 60 fields per second. This standard is in use in North America, Japan, South Korea, Burma, Taiwan, the Philippines, and much of South America.
Letterbox - Letterbox refers to the image of a wide-screen picture on a standard 4:3 aspect ratio television screen, typically with black bars above and below. It is used to maintain the original aspect ratio of the original source (usually a theatrical motion picture of 16:9 aspect ratio or wider).
PCM - (Pulse Code Modulation) - This 2-channel digital audio standard is simpler than Dolby Digital.
Multi-path interference - Some neighborhoods are plagued with this problem: - The signal finds more than one path to the antenna. Multi-path results from reflections off of buildings and diffraction around the sides of hills. For NTSC sets this will result in ghosts: multiple images shifted laterally. For DTVs the result can be an unusable signal, even though it may be strong. The solutions are moving the antenna or selecting a very directional antenna. Newer generations of DTV receivers are better able to cope with multi-path.
EDTV - (enhanced definition TV) - Essentially DVD quality, it is a small step up from NTSC. An EDTV will convert all 18 ATSC formats to 480p.
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