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Colordeagua
Member
10-25-2003
| Saturday, June 05, 2004 - 1:54 pm
Tell me the truth, but please don't tell me my almost 200 DVDs will be old technology and going, going . . . before long. All I know about blu-ray is that it's able to store more data on one disc. What about my DVDs?
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Draheid
Moderator
09-09-2001
| Saturday, June 05, 2004 - 2:17 pm
Colordeagua: Never fear, the techno-wizards are 'on the job' already to make sure you don't have to worry: Tokyo, December 18, 2003, NEC Corporation today announced development of technology capable of recording and playing back both current DVDs and next generation DVDs (HD DVD - High Definition & High Density DVD) with a single optical head, and its success in creating a compatible drive based on this technology. And this excerpt from an article at www.blu-ray.com:
While current optical disc technologies such as DVD, DVD-R, DVD+R, DVD-RW, DVD+RW and DVD-RAM use a red laser to read and write data, the new format uses a blue laser instead, hence the name Blu-ray. The benefit of using a blue laser is that it has a shorter wavelength (405 nanometer) than a red laser (650 nanometer), which means that it's possible to focus the laser beam with even greater precision. This allows data to be packed more tightly on the disc and makes it possible to fit more data on the same size disc. Despite the different type of lasers used, Blu-ray Disc recorders can be made backwards compatible with current red-laser technologies and allow playback of CDs and DVDs. Hope this helps.
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Colordeagua
Member
10-25-2003
| Saturday, June 05, 2004 - 4:26 pm
Thanks, Dra. I hoped I wouldn't be dumping my DVDs already. Never had many tapes, but those little disks -- that's another story. My DVD player that I won in April 2000 and is still working well should be good for a while yet?
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Cathie
Member
08-16-2000
| Monday, June 07, 2004 - 10:05 pm
I don't know if this is new DVD technology or not but tonight I bought the first season of Northern Exposure on DVD and was shocked that the DVDs have a side one and side two. The set has two DVDs, and you flip them over after the first two are done for the last two sides. I tested it just enough to make sure it really worked on the other side, too, and it was fine. Is this something new, or just a cheap way for them to cram as much as they can into each DVD?
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Draheid
Moderator
09-09-2001
| Monday, June 07, 2004 - 10:39 pm
Cathie: It's very common to 'double-press' a DVD. Most times I've seen it has been the same movie in widescreen on one side and fullscreen on the other. Since the whole concept is for the laser to be reflected back, it's easy enough to press two together to save on manufacturing cost. Hope that helps.
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Cathie
Member
08-16-2000
| Tuesday, June 08, 2004 - 1:13 pm
Thanks, Draheid, it's the first time I've come across this. At least I know I wasn't duped, lol.
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Maris
Member
03-28-2002
| Tuesday, June 08, 2004 - 1:18 pm
I would have a coronary. Like you Cathie, I have DVDs in the hundreds. Just threw out my vhs library this past month, having replaced many with DVDs. I find that if there is a movie, I am interested in but dont feel like paying for I will wait for it to come out on DVD. A movie with popcorn and candy for three usually ends up costing upwards of $50. DVDs are cheaper.
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