digital tv scanning issues?
Posted on Jun 23, 2009 under Digital news and reports |i have a digital tv, no cable or anything else - i'll be watching a tv show and throughout the shows i'll get a blank screen that says "scanning" for several seconds and then the show comes back on. it's very irritating while watching a movie and missing what's going on. i have physically scanned from the menu when the crossover took place so why does it keep doing this? thanks in advance for any help.
June 23rd, 2009 at 8:24 am
The problem with digital TV versus analog is it is 'all or nothing'. With analog when your signal went bad it would get staticy or fuzzy. With digital when the signal gets below a certain level it will cut out completely. All you can do really is to buy a better antanna or get cable. Check http://www.antennaweb.org and it will tell you what broadcast towers you should be able to recieve reliably in your area with your antenna.
Analog TV would broadcast in 'waves' when the signal gets bad you can still mostly make out the shape of the wave and you will just get a worse picture and degraded sound.
Digital works with 1s and 0s and once a certain amount of fault tolerance hits a threshold the signal is completly useless because the TV will not know where in the picture or sound the 1s and 0s that it does recieve belong. And this is when you will recieve your 'scanning' issue.
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