arstechnica.com — Researchers in California report on the creation of a standard sized optical disc (120mm x 1.2mm) that is capable of holding up to 1 Terabyte of data. The added storage comes from using all three dimensions instead of encoding data on the surface of the disc.
Jul 29, 2008 View in Crawl 4
acidityJul 30, 2008
Yay! for science and technology.
rentonJul 30, 2008
Yeah, if you ever look on the box when buying an SD card or anything, it will say something like "Data retention up to 10 years". Eventually, the data cells lose their charge.
kmolnarJul 30, 2008
It's sort of like a standard dual-layer disc, only instead of having two layers, it can have thousands. This is new technology.
Closed AccountJul 30, 2008
That's my point,From what I got from the article, the data is NOT stored in 3D, but in several 2D layers.In that case you can only read a layer at a time (AFAIK). So there isn't any gain in speeds here, unless they could burn/read multiple layers simultaneously.
Closed AccountJul 31, 2008
That's not true you can have a laser that reads varying intensities instead of just all or nothing.The laser in your computer is merely set to only distinguish 2 states 0 or 1.
Closed AccountJul 31, 2008
You clearly didn't understand what I said.I'm not talking about having the computer interpret more than just 0's and 1's.I'm talking about having two bits stored in the same surface space as a single bit on a dvd.In a single space on dvd you have two possibilities 0 or 1. So they are represented as blank, or a mark.I suggested storing the numbers 00, 01, 10, 11. To represent two bits. You need 4 different markings to represent each of these numbers. Varying the intensity of the mark can do this.The result is an instant doubling of capacity without any need for smaller or more precise lasers.
billbuggerJul 31, 2008
I tried to read that site and understand what he was saying, but he failed to understand how to communicate to others in the English language.