DavePR
join:2008-06-04
 ·DSL EXTREME
1 edit | Toothpaste back into the tube...
"Listen before talking" is the easy part. The more difficult problem is the installed base of millions of inferior HDTV tuners, with very little ability to tolerate a strong signal (or, more likely, signals) on the channel adjacent to (or several channels away, for that matter) the one the receiver is tuned to. The original ATSC specifications were drawn up using laboratory grade hardware. The circuitry actually in peoples' TVs is much less sophisticated and much more prone to overload. None of the consumer tuners has very good intermod rejection and all manner of unexpected operation is to be expected. Here's some science for y'all:
»www.tvtechnology.com/pages/s.007···001.html
Couple this with the trend toward ditching cable or satellite in favor of a good old fashioned antenna and you can see why the NAB is antsy. |
