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.
Fire Wire - A digital interface originated by Apple Computer that can transport data at 100, 200, or 400 Mbps. It is widely used to interconnect digital video devices, such as cameras and displays. Also referred to as IEEE- 1394.
EDTV - Enhanced Definition Television. A term defining a television that displays the picture (either from SDTV or HDTV) at a resolution of 480p lines in either 4 - 3 or 16 - 9 aspect ratio and which includes Dolby Digital AC-3 multichannel sound.
Composite Video - An analog video signal (NTSC, PAL or SECAM) that includes both luminance (brightness) and chrominance (color) signals encoded together to form a single signal.
Addressable Resolution - The highest resolution signal that a display device (television or monitor) can accept as input. Some display devices may not be capable of displaying such signals and may downconvert them to a lower resolution prior to display.
FTA - (Free To All MPEG-2 broadcasts) - The two most common digital schemes found on C-band and Ku band are 4DTV and FTA. FTA receivers are available to consumers, but there is effectively no regular HD programming.
DTS - Digital Theatre Sound System. A Dolby proprietary discrete 5.1 channel surround system similar to, but not the same as Dolby Digital AC-3, the DTV standard. DTS is used in cinema presentations and in DVD's.
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