Thursday, February 17, 2011

Understanding about HDTV resolutions


There are many benefits that HDTV offers to consumers. By many standards, HD TVs are the replacements to standard TVs that were large and did not have an adequate resolution to be able to display HD content. The HD (high-definition) resolution is one reason why HD TVs look so much superior to Standard TVs. HD TVs are able to display up to 2 million pixels of colours that create images that are both more detailed and appear more real than other TVs. Although the resolution is one major thing that sets HD TVs apart, there some things that go into making an HDTV resolution what it is.

So what makes HD TV resolution what it is? Well there among the things that make the resolution what it is, are the contrast ratio, the aspect ratio and color saturation as well as color accuracy.

Contrast Ratio – The contrast ratio is a measurement of how the HD TV displays the blacks, whites and RGB (red, green and blue) colors and how they adjust to the content that is being displayed on the HD TV. For most HD TVs, the contrast ratio is usually measured by the system refresh rate.
Aspect Ratio – Although a similar term to that of contrast ratio, the aspect ratio has to do with the viewing range and angle of the HD TV. Standard TVs used an aspect ratio of 4:3 which required picture resolution to be reduced and often distorted the real picture quality. With HDTVs, the aspect ratio was increased to 16:9 which was the same as that of the human eye, making HD TV viewers feel more “into” the content that is played on an HD TV.

Colour Saturation – Color Saturation is used to create a more rich color mixture on an HD TV. Color Saturation is similar to color accuracy, although color accuracy deals more with displaying the correct the blacks, whites and RGBs.

These factors together combine to influence the overall difference of the resolution. Because HD TVs only have several HD resolutions, 720p, 1080i and 1080p, the HD resolution is not any different on different HD TV screen sizes. The real advanced different is in the four factors as the display is what really makes the difference.

When deciding which HDTV to pick, consider that resolution is not everything, although it is important to make sure your HD TV can support various HD resolutions, also place into consideration the other factors, contrast ratio, aspect ratio, color saturation and color accuracy.

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