HDTV Setup

In my GearWorks column in our January 2005 issue, I talked about how, depending on your viewing distance, the resolution of your display may not matter. To sum up, your eye has a finite resolution (like a digital camera), and, as objects get smaller with distance, there is a point where your eye can no longer distinguish between bigger and smaller pixels. Over long distances, this is obvious, but it surprised a lot of people that it could be so noticeable in shorter (in-room) distances.

It started out innocently enough, back in January 2000. ABC had concluded a season of Monday Night Football broadcasts in their 720p HDTV format and was putting the icing on the cake with an HD telecast of Super Bowl XXXIV from Atlanta, Georgia. Since I had watched a few of the MNF games in HD, I decided to set up a front projector and an HD monitor and invite some friends and neighbors over to give 'em a taste of sports in high definition. The game turned out to be a big hit. Over 30 folks attended and marveled at the widescreen images from my Sony VPL-VW10HT projector and Princeton AF3.0HD monitor. Never mind that I had to jury-rig an antenna on my rear deck and run coaxial cable into my basement to feed a single Panasonic set-top tuner, then use a video-distribution amplifier to run two component video feeds into my living room and my basement theater. Everyone was amazed at the picture quality and gorged themselves on a feast of wings, subs, pizza, chips, dip, and assorted desserts.

Switching component video sources is a double-edged sword. For a number of reasons, there's plenty of need for it; however, until recently, it was fairly expensive to do it well (read: without adversely affecting the video signal). Still, there are a number of scenarios in which video switching, transcoding, or distributing high-resolution video (particularly HDTV signals) is important.