SPDIF - (Sony/Philips Digital Interface) - This is digital audio, and can be either coaxial cable or fiber optic.
EPG - Electronic program guide. An on-screen display of channels and program data.
Pixel - A picture element; a single displayable video dot. HDTV requires from 1 to 2 million pixels in the display for full resolution images to be shown.
PAL - (Phase Altering Line standard) - This alternative to NTSC has 625 lines, interlaced, 50 fields per second. It is used in most of Europe, Asia (except USSR), Africa, and Australia, and parts of South America.
Raster - A group of closely-spaced lines whose brightness changes so as to appear to be an image.
VSB - " Vestigial side band." VSB is an analog modulation technique used to reduce the amount of spectrum needed to transmit information through cable TV, or over-the-air broadcasts.
Aspect Ratio - A numerical expression of the relationship of width to height of a TV screen. 4:3 - This numerical sequence refers to the aspect ratio of the National Television Systems Committee (NTSC) TV screen, with "4" unit width corresponding to "3" unit height, proportionally, regardless of the actual size of the screen. 16:9 - This numerical sequence refers to the aspect ratio of wide screen DTV formats for all HDTV and some SDTV (Standard Definition) video. A "16" unit width corresponds to "9" unit height proportionally, regardless of the actual size of the screen. The widescreen 16:9 numerical sequence provides a viewing experience very similar to that of 35 mm movies.
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