Yeah, this really is nothing new. I read about this technology back in the early nineties on BBS's. Of course, back then, 4Gb was pretty damn sexy but as another poster pointed out, you can't do a selective restore. It's all or nothing (usually nothing considering all the errors!).
-Hualon
I remember when DVD Audio was first introduced and a lot of people in the HI-FI rags were wondering whether blue-laser technology would be feasible.
The issue of taking any sized disc (12cm, 3cm, what have you) and using pits small enough and densely packed enough to achieve the capacity that Philips has doesn't seem practical to me.
When you consider that a blue laser with a wavelength of ~425nm is reading information off of a 3cm disc, that makes the pits pretty damn small. When you're talking about capacity in the 1GB range on such a disc, the disc simply must be a multi-layer (probably 3-4) multi-substrate hybrid unlike any DVD or CD we know.
With this new technology, people must realize that such a disc is incredibly susceptible to scratching and will require a caddy. When DVD was still being discussed back in the day, it was assumed that the discs would all be in caddies but that was deemed inappropriate by marketing folks.
A 1cm scratch on a 12cm CD disc renders the disc with 83% of the surface intact and 581Mb of 700Mb intact. Compare that to a DVD with 5.7Gb of data... that's a loss of 969Mb!
Now, a 1cm scratch on a 3cm disc is a 33% loss of data. Scratch this disc and you lose 348.16 Megs! That's not good! Hey Philips, ENFORCE CADDIES!
-Hualon
But is spam blocking really the responsibility of your ISP? I think that a user-tool is the best way to block this sort of thing.
If anything, RoadRunner or whatever your ISP would be happy to continue your barrage of spam once their usage rules are in place. They simply have no incentive to block it before it charges you on the $.20 a meg program.
But an ISP approach to blocking SPAM requires a rules-based approach. The parent article states that such approaches are too tedious to scale or update with any frequency.
-Hualon
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Yeah, this really is nothing new. I read about this technology back in the early nineties on BBS's. Of course, back then, 4Gb was pretty damn sexy but as another poster pointed out, you can't do a selective restore. It's all or nothing (usually nothing considering all the errors!).
-Hualon
The issue of taking any sized disc (12cm, 3cm, what have you) and using pits small enough and densely packed enough to achieve the capacity that Philips has doesn't seem practical to me.
When you consider that a blue laser with a wavelength of ~425nm is reading information off of a 3cm disc, that makes the pits pretty damn small. When you're talking about capacity in the 1GB range on such a disc, the disc simply must be a multi-layer (probably 3-4) multi-substrate hybrid unlike any DVD or CD we know.
With this new technology, people must realize that such a disc is incredibly susceptible to scratching and will require a caddy. When DVD was still being discussed back in the day, it was assumed that the discs would all be in caddies but that was deemed inappropriate by marketing folks.
A 1cm scratch on a 12cm CD disc renders the disc with 83% of the surface intact and 581Mb of 700Mb intact. Compare that to a DVD with 5.7Gb of data... that's a loss of 969Mb!
Now, a 1cm scratch on a 3cm disc is a 33% loss of data. Scratch this disc and you lose 348.16 Megs! That's not good! Hey Philips, ENFORCE CADDIES! -Hualon
But is spam blocking really the responsibility of your ISP? I think that a user-tool is the best way to block this sort of thing. If anything, RoadRunner or whatever your ISP would be happy to continue your barrage of spam once their usage rules are in place. They simply have no incentive to block it before it charges you on the $.20 a meg program. But an ISP approach to blocking SPAM requires a rules-based approach. The parent article states that such approaches are too tedious to scale or update with any frequency. -Hualon