Why HDTV Technology Is All The Rave In Home Entertainment
Posted by Kim Pascel | Under Communications Sunday Feb 7, 2010There’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.
High-Definition is a broad term because it just means better quality, which could mean anything. The term high-definition used to refer to TVs back in 1934, because they were very high-definition when compared to their earlier models. What HD really means is higher resolution, and HD nowadays means a lot higher. The traditional pixel resolution for HD is 800,000 or more, which far surpasses the 1934 HD’s 30 pixel resolution.
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.
That is both the reason behind the claim to fame for HD and the reason why it’s so seemingly exclusive. TVs can be HD without needing the port, but not having one is only a difference of a few thousand pixels of resolution, rather than hundreds of thousands. To get all the extra detail, you need a TV that can process it, which means having the HDMi port in order to communicate the complex language of the HD video being shown.
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”, they stand for how the image is scanned onto the TV. The image is either “interlaced” or “progressively” scanned. Interlaced scanning is the method that scans the odd and even lines of resolution alternatively. It reduces overall bandwidth use, but in return has a lower quality video shown in the “twittering” effect of the image. Progressive scanning is more detailed because it scans each line in sequence, melding the image together as a whole. It’s better quality, but uses up more bandwidth (a lot more).
All that’s mentioned here are just a few reasons why HDTV technology is so much greater than ever before. It all comes down to technological advancement, which means all HD products need to be used together to really get what everyone is raving about. And that is all why HD really makes a difference.
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