S-video - Also called Y/C, this two-wire standard keeps the color separate from the intensity signal, and thus avoids the overlapping sideband problem of composite signals. (Converting an NTSC signal to S-video gains you nothing since what was lost cannot be recreated.) - Although the quality of S-video is close to component video, S-video cannot transport anything better than 480i.
Cable Modem - A data modem that provides an Internet connection over the TV cable network. Video-on-demand or interactive services may require such a connection.
Interactive Television - This is when TV programming features interactive content and enhancements, blending traditional TV viewing with the interactivity of a personal computer.
LCD. (Liquid Crystal Displays) - A flat panel technology, using thin-film crystal techniques, widely used in laptop computers, other small portable displays and more recently in televisions. Image brightness can be very high and color performance can be good. For HDTV, wide-screen displays of adequate resolution are available up to about 94 cm (37 in.) for direct viewing. LCD devices are also widely used as the key element in many projection televisions, both front and rear screen, up to very large sizes.
PSIP - Acronym for "Program and system information protocol", an ATSC DTV specification that enables a DTV receiver to identify the program information and to create on-screen electronic program guides and content advisories.
Compression - A method of reducing the number of bits required to store or transmit programs by the removal of redundant and/or non-critical information in the digital picture and sound. The DTV broadcasting standard for Canada, uses the MPEG-2 video and the AC-3 audio compression coding. Compression allows the delivery of more programs in a single channel.
GLV - (Grating Light Valve) - This is another contender to replace CRTs in projection TVs.
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