When Is The Right Time To Get HDTV In My Home
Feb 8, 2010 Stock News
You’ve probably heard about it, and you’re probably wondering about how it all works. It’s advertised everywhere, and everyone is trying to get you to buy one. With Blu-Ray out now, it’s even more critically acclaimed. Here are some things that should help inform you about HDTV technology.
For starters, the origination of HD is simply “better quality”. Back in 1934, the first High-Definition TV was only called HD because it was a better quality TV than other that were out at that time. It meant higher resolution, but when you compare it to the new age TVs, it’s not even close. Back then, a High-Definition TV had a 30 pixel resolution. These days, the typical TV has at least 800,000, usually more. So it all comes down to the times.
That’s not the only reason why it’s a bigger deal now, though. Another reason is advancing technology of output video. That is to say, the invention of things like Blu-Ray. Blu-Ray is an HD medium that makes HD technology not only more supreme, but necessary in order to take advantage of the higher quality. Blu-Ray quality is outstanding, for sure, but you can only use it if you have an HDMi port on your TV.
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.
The other important aspect of HD is how the information is scanned. Most TVs are 1080i or 1080p, where the 1080 means 1,080 lines of resolution. More lines of resolution means a better quality video because, much like pixels, if there are more lines, then the image is tighter. That way, the actual make up of the image cannot be seen as easily (which is a good thing).
As for the “p” or “i” part, that refers to the form of image scanning. These 1,080 lines if resolution need to be constantly scanned to refresh the image. If it’s 1080i, then the image is “interlaced”, meaning that the even and odd lines alternate to conserve bandwidth. The sacrifice of a reduced bandwidth is a “twittering” effect of the image. If it’s 1080p, then the image is “progressively scanned” or sequenced. The lines follow each other as they’re being written, sucking up more bandwidth, but producing an overall higher quality video.
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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Tags: Cable Tv, communications, Hdtv, high definition, media, Satellite Tv, Stock News
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