Full High Definition Television Explained

. Tuesday, September 29, 2009
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By Marshall Denyer

HD broadcasting is pushing analog television sets off the market. LCDs outsell all televisions among smaller sized HD ready and full HD LCD sets. Plasma sets, which are mostly larger, also come in HD Ready and full HD plasma sets.

Full HD TV - The technical specifications for a full High Definition LCD TV must include a 1080p as its pixel count. The contrast ratio will be listed as 1920 by 1080p. This 1080p designation signals that a television set can fully and completely broadcast the highest level of high definition broadcasting without reducing it to a smaller pixel count. If you play a high definition DVD or blu-ray disk, a full HD LCD TV can claim the best possible LCD picture. In the same manner, if you check the technical specifications for a full High Definition plasma set, you will also find a pixel count of 1080p. The contrast ratio will be listed as 1920 by 1080p. Again, this is the only way to ensure a true high definition picture without loss of pixel count.

For blu-ray technology, which is also filmed in this 1080p high definition, these sets are perfectly compatible. These sets reproduce blu-ray disks exactly as they were filmed. Other sets cannot claim quite this high a quality.

HD Ready - HD ready capability exists in sets with a pixel rate of 728i or 1080i. Each set includes a built-in high definition tuner for displaying broadcasts with higher pixel ratings. LCDs and Plasmas have fixed-pixel displays that use pixels to display television images. If the number of pixels is 728, then it has 728 pixels per vertical inch. If the number is 1080, then it has 1080 pixels per vertical inch. Images increase in detail as the pixel number rises.

HD Set sizes - When it comes to HD set sizes, LCDs are available in almost every size from 10 inches up to its 42 inch TV. Then it jumps up into higher numbers, competing with plasma. The 42 inch set is a good middle ground for those who want size without incredibly high prices. Plasma comes in 50 and 60 inch sizes usually. However, some sets as small as a 42 inch TV do come in plasma. Sizes do not reflect whether the set is HD ready or full High Definition.

HD sets - One obvious difference between analog and full High Definition TV broadcasting is the aspect ratio. This is the width by height of a display. Analog broadcasting had an aspect ratio of four inches of width to three inches of height. HDTV broadcasts in a 16:9 ratio. You can expect a full HD LCD TV to be as wide as it is tall. It is thinner due to its streamlined technology, and its thinness is not a way to determine if a set is HD ready or a full High Definition LCD TV. Due to aspect ratio, full HD plasma sets and HD ready plasma sets may be as wide as they are tall. They are also thinner due to their technology, and thinness cannot be used as a guide to HD capabilities.

HDTV Converters - Analog televisions do work if hooked up to an High Definition TV converter. The HDTV converter works from outside of the television to tune the signal to analog. This is similar to the built-in digital tuners in LCD and plasma televisions. Without an HDTV converter, an analog television cannot receive digital broadcasting, which is fast replacing analog.

HDTV Online - High Definition TV online is accomplished through the pixel rate on your computer screen. It may or may not be high enough to deliver true HDTV. To find out if HDTV online is true full high definition, you should compare your pixel count and resolution to 1920 by 1080p. If it is lower, it is not full HD as compared to full HD LCD TVs and full HD plasma sets.

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