There’s an awful lot of talk about HDTV technology, more so now than ever. What makes it so much different now to make it so much more popular? Well it’s an answer based on several other technologies that are around now that never have been before, and the difference they all make. Some are listed as follows.
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Firs off, what does HD even mean anyway? It means high-definition, but that doesn’t describe much either, because high-definition just means better quality, and that’s pretty vague. The first TV to be considered HD was back in 1934, and it was considered high-definition because it boasted a 30 pixel resolution. While that’s a joke now, it was a big deal back then. Nowadays, the common high-definition TV has a pixel resolution of 800,00 or more.
Blu-ray has opened up the use of HD like never before. In the past, HD affected what you watched by a marginal, albeit noticeable, amount. The images may have been a little clearer, but nothing compared to what Blu-ray has opened us up to. The catch, of course, is not only that you have to have a Blu-ray player, but that you have to have HDMi connections on your TV to use it.
This is what makes HD so important now, because not only is the quality of the TV improved, but the quality of the video itself is improved. It’s not just Blu-Ray, either. Some TV channels are in HD, as well as some other DVDs. They all use their own compressed pixel ratio that can only be seen with HD technology, because a less advanced TV can’t utilize that amount of information. The intensity of the picture quality is certainly far greater by comparison than past models.
Because HD has become so much more important, it now comes in a completely different form. That’s why you need to have HDMi connectors to even use the real HD aspect. An HDMi connector is a high-definition multimedia interface, and is capable of reading and translating the digital information from an HD source to put it on your screen. Only certain things can use the HDMi port, and are the only things that can utilize the full potential of HD.
This quality comes from the output video, but more importantly from the TV as well. This is because the modern TV is generally 1080i or 1080p. The 1080 part means how many pixels of resolution. An image broken up into these lines is much clearer when there’s more lines to hide the separation, which is why a bigger number is a good thing.
The difference shows up between the “p” and the “i”. The “p” means progressive scanning, meaning that all 1,080 lines are displayed in sequence, providing a higher quality image. The “i” means interlaced scanning, meaning that 540 of the lines are scanned alternatively (the 540 even lines followed by the remaining 540 odd lines), to help reduce bandwidth consumption. Progressive scanning, of course, is a much crisper image display, and doesn’t have a “twittering” image that interlaced scan has, but in return, it uses more bandwidth.
There’s no question that an HDTV is a better quality machine, but it’s only better depending on how you use it. The technology of the TV is only as strong as it’s weakest link. Not having the TV, for instance, is the same as having the TV and not having the connection. Overall, though, it’s home theater brought to a new, and better, age.
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