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About HDTV : High Definition / Hi-Def Television

HDTV originates from a digital signal and has much higher resolution. Conventional television has less horizontal and vertical resolution than HDTV, which can display programs of up to 1080 lines of resolution compared to 400-700 lines of resolution in SDTV (the exact resolution depends on which SDTV broadcasting system is being used).

The width of the image is also different in HDTV, which uses a 16:9 aspect ratio (for every 16 dots horizontally there are 9 lines vertically) instead of SDTV's 4:3 aspect ratio.

Thus when 1080 lines are being displayed, an HDTV set has a resolution of 1920 dots across. This is a very big difference when compared to NTSC, the SDTV standard used in North America, which has a horizontal resolution of 720 dots and a vertical resolution of 480 lines. The result is a much larger picture for HDTV broadcasts.

Note that the HDTV aspect ratio is close to, but not the same as, the aspect ratio used in many movies.

	Digital Video Essentials: HD Basics [Blu-ray] List Price: $29.95 Sale Price: $15.90 Average Rating:
	With a 90 min. overview of the basics of HDTV, a 25 min. quick setup guide, audio calibration test signals, and more, all wrapped up with an easy-to-use menu system, the HD Basics Blu-ray disc will help you get the most out of your Blu-ray player home theater system.

	Proscan 26" LCD TV With 720p HDTV Resolution (1 in stock) List Price: $572.47
	720p native resolution with 1366 x 768p pixels800: 1 contrast ratio8ms response time500 cd/m2 brightness2 HDMI, 2 component and VGA inputsIncludes remote