16 - 9 - Aspect ratio of widescreen DTV formats for all HDTV and some SDTV (Standard Definition) content, 16 unit width by to 9 unit height.
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.
OTA - (over the air) - There are about 1500 OTA (terrestrial) TV stations in the U.S.
HD-Capable TV - A standard definition set with a digital tuner. (This term was probably invented to confuse people.)
Y, PB, PR - A method for carrying the video between HDTV or SDTV devices that retains the maximum quality and is recommended for HD television. The video is carried on three cables, respectively carrying luminance (Y) and the two color difference signals (PB, PR).
DVI - (Digital Visual Interface) - This connector conveys HDTV image scanning signals in binary data form. The data rate is very high (1.65 Gb/s). Binary data is preferred by monitors that are not CRTs. DVI comes with a decryption option called HDCP which will decode encrypted programs such as first-run movies.
D/A - Conversion of digital signals to analog signals. Most set-top boxes decode the digital signals broadcast and then convert them to analog signal for interconnection to the display device.
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