So, how do you prevent burn-in on your brand-new plasma TV screen?
(1) Some obvious advice: Do not leave static images on your plasma TV screen for more than an hour. Turn off your unit when you are not watching it. Do not pause DVDs for more than 20 minutes at a time.
(2) Know that plasma screens are more prone to burn-in during their first 200 hours of use. When phosphors are fresh, they burn more intensely as they are ignited. This means that relatively new plasma display TVs are prone to "ghosting", which occurs when on-screen images appear to stay on the screen belatedly. This is a function of the high intensity with which new phosphors "pop," and this phenomenon usually "washes out" on its own, as the screen displays subsequent images. Displaying a bright, or moving snow image (as with a DVD or VCR with no input) will "wash" a ghost image from the screen in most cases. Many plasma manufacturers have installed anti-burn settings, which are monotone gray or snow screen settings which recalibrate pixel intensity levels uniformly - thus eliminating any image retention (ghosting). It is a good idea to run this type of program after the first 100 hours or so.
(3) Adjust the CONTRAST setting at or below 50% on your new plasma TV. These days most plasma TVs are preset to either peak or very high contrast (also called picture setting on many TVs). This forces phosphors to glow more intensely, which decreases the length of time necessary for burn-in to occur. Our advice is to reduce the contrast setting to 50% or less for the first 200 hours of use. And, be sure to avail yourself of your plasma's anti-burn-in features.
(4) Some plasma televisions burn-in more easily than others. In my experience, AliS type panels -- the ones utilized by Hitachi and Fujistu -- seem more readily given over to problems with burn-in. As well, be more wary of the 2nd and 3rd tier brands as their technology is usually not as up to date as some of the better 1st tier brands.
(5) When displaying video games and other content which have static images, use your burn-in protection features like power management settings, full-time picture shift (both vertical and horizontal), and automatic screen-saver functions. Check your Owner's Manual for further information.
(6) Realize that quality matters with burn-in as with everything else. Purchase a plasma display that has really good scaling, so that you can watch 4:3 TV programs in widescreen comfortably. It is better not to display black bars on your TV screen for prolonged periods of time (especially in the first 200 hours), so you are probably better off watching most everything in "full screen" mode. This should not be much of a problem todays selection of widescreen HDTV and DVDT content.
Also, higher quality TVs tend to be more resistant to burn-in -- though not entirely immune to it. Of the plasma displays I've owned and/or tested extensively, NEC, Sony, Pioneer, and Panasonic seemed least prone to burn-in once the plasma screen was properly broken in.
Note: There are some applications which are simply not well suited to plasma display technology. The static flight schedule signage at airports, for example. It amazes me to walk into an airport and see a ruined plasma display monitor hanging from the ceiling with what is obviously an extreme case of permanent burn- in. As LCD monitors have increased in size, they are being used to replace plasma displays in this types of setting.
http://www.plasmatvbuyingguide.com/plasmatv/plasmatv-burnin.html
grinning-smiley-043) και με την βοήθεια της GD βιβλιοθήκης δημιούργησα jpeg εικόνες. Για να υπάρχουν αρκετά χρώματα που να εναλλάσσονται κατά τη διάρκεια της αναπαραγωγής, θεώρησα 5 αποχρώσεις για κάθε βασικό χρώμα (0, 64, 128, 192, 255). Συνεπώς εμφανίζονται 5 x 5 x 5 = 125 χρώματα. Επειδή ήθελα το μαύρο και το άσπρο να μην εμφανίζονται μόνο μία φορά, τα έβαλα να εμφανίζονται και μετά από τις τρεις αποχρώσεις του γκρι (δηλαδή όταν r = g = b = (64 ή 128 ή 192)), οπότε συνολικά δημιούργησα 125+6= 131 καρέ. Μάζεψα όλα αυτά τα καρέ με την βοήθεια του mencoder, οπότε δημιουργήθηκε το βιντεάκι διάρκειας 131 δευτερολέπτων. Με το dvdauthor ρύθμισα να loop-άρεται αυτόματα αυτό το βιντεάκι, με το που βάζει κανείς το DVD στο player.
