Despite the fact that HDTV has been around for a few years and that there are numerous books, magazines and websites dedicated to it, it can still be pretty confusing, particularly if you’re not a technology geek. So, it’s worth recapping just what constitutes HDTV.
In order to receive and watch an HDTV signal you need a number of things. Firstly, you need to be in a country and area where HDTV is broadcast, either over the air, by cable and by satellite. If you live in the US, you can almost certainly receive HDTV by one, if not all of these media. In Europe, you will be more limited. For example, in the UK you need to
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Secondly you need a tuner that can receive HDTV. This will typically either be a cable, satellite, or off-air set-top box, but could also be an integrated HDTV, CableCard or Mac/PC HDTV tuner (usually either a PCI card or USB 2 peripheral).
Thirdly, you need a display which is capable of reproducing HDTV signals. To do this, it must have a vertical resolution of at least 720 pixels, be able to display progressive scan signals, and have a minimum width to height aspect ratio of 16:9. EDTVs have a vertical resolution of only 480
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Finally, you need to be able to hook the three elements together. The key part here is that the TV must be connected to the tuner, if it’s not built-in, by a medium capable of transferring high definition signals. For a TV or projector this means DVI, HDMI, or component connections although if you choose component, you may run into trouble later on when watching signals encoded using particular [http://www.the-hdtv-tuner.com/hdcp.html]HDCP. For a computer tuner, a PCI slot, USB 2 or FireWire interface will do the job.
Kenny Hemphill is teh editor and publisher of target=new [http://www.the-hdtv-tuner.com]The HDTV Tuner, a source of information, eductaion and opinion on HDTV.
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