How to Tell If a TV Is SD or HD
High-definition televisions are invading the market, but it can still be difficult to tell the difference between standard definition and high definition. If you do not have the best eyesight or your television does not have the correct connection cords, it can be difficult to tell the difference between the quality of high definition and standard definition. Fortunately, with a little work and research, you can discover precisely what kind of picture quality you have.
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Instructions
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Examine the frame of the television. Search for any logos reading "HDMI" or "HDTV." These labels will tell you if it is a high-definition television. Not all high-definition televisions come with these logos, however, so don't worry if you can't find them.
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Check the box (if you still own it) for any indication of the quality on the television. For a high -efinition television, you should see the quality listed as 720p, 1080i or 1080p. The "p" stands for "progressive scan" and the "i" stands for "interlaced scan." If the box says 480i or 480p, it is standard definition.
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Determine if your television is high-definition ready or simply high definition. The box or the owner's manual on the television should disclose your television's specifications. A high-definition-ready television has the ability to be high definition, but without an incoming high-definition signal from a cable box, it is simply a standard television.
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Tips & Warnings
Progressive scan refers to the method of refreshing the picture on the screen. The higher the refresh rate, the cleaner the picture. High-definition televisions use this method for creating a high-speed, clear picture.
Interlaced scan is the method that refreshes the screen's image half the screen at a time. Interlaced scanning is slower than progressive scanning, but it can still produce a clean picture.
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Resources
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