http://news.cctv.com/science/20070413/102446.shtmlskyx 写了：dogfox 写了：在目前的电脑应用中,采用最多的是0和1组成的二进制运算模式。而印度喀拉拉邦的一名计算机系学生最近宣称,他发明了一种全新的数据存储技术,随处可见的纸片就可以当作“移动硬盘”,用来存储数据。发明者赛努尔介绍说,他开发的程序可以把二进制数据转化成色彩和图案,因此将这种存储方式命名为“彩虹”技术。经过转化后的数据可以打印在纸上、塑料上或者玻璃上,方便携带,需要时,再使用专门的扫描仪就可以读出数据。“彩虹”技术能够存储各种格式的文件,文本、MP3或者电影都不成问题。
据赛努尔介绍,“彩虹”技术能够大大提高数据的存储密度,而且用纸片作为存储介质,可以大大降低数据存储费用。
目前,还在就读的赛努尔对这项技术充满信心,他的愿望是毕业后成立自己的公司,继续进行“彩虹”技术的应用开发。
这让我想起了方便面上的条码？ 更让我想到3岁小孩子用的看图认字学习机中， 学习卡片上的打孔。
“彩虹”技术:纸片存储取代移动硬盘
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dogfox
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Re: “彩虹”技术:纸片存储取代移动硬盘
全世界linux爱好者联合起来 !
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dogfox
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eastbarlqz
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asm
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dogfox不妨看这个：
http://beranger.org/index.php?article=2029
我把文章贴在下面，
A good Indian is a de...* oh, sorry, the wrong movie. And the wrong Indian.
In the hoaxing article Data Can Now Be Stored on Paper, somebody named Sainul Abideen (it seems there is more than one Sainul Abideen in Kerala!) claims to be "a Kerala student". Whatever.
Guess what?
«...the Rainbow Versatile Disc (RVD) can store 90 to 450 GB.
While a CD costs Rs.15 (SR1.25), his paper or plastic-made RVD will cost just about Rs.1.50 and has 131 times more storage capacity.
Sainul, who has just turned 24, says that instead of using zeroes and ones for computing, he used geometric shapes such as circles, squares and triangles for computing which combine with various colors and preserve the data in images.»
Let's get real. This is a hoax propagated by several sites, and this doesn't make it more real.
ArsTechnica sets it right: 256GB paper storage claims simply don't add up:
«However, despite technological advances in scanning and printing technology since those days, Abideen's claims quite simply do not hold water. A little bit of math is in order here. Starting with a scanner with a maximum resolution of 1,200 dots per inch, this leads to a maximum of 1,440,000 dots per square inch, or just over 134 million dots on a sheet of standard 8.5" by 11" paper (excluding margins).
...say that the scanner can accurately pick out 256 shades of color for each dot. That's a single byte per dot, making the final calculation easy: a maximum theoretical storage of 134MB, which would likely go down to under 100MB after error correction.
...
In the end, a picture may be worth a thousand words, but it cannot be worth half a thousand megabytes.»
TechWorld is even more detailed: Can you get 256GB on an A4 sheet? No way!
«Abideen stated that he could store 2.7GB of data in a square inch, and up to 450GB on a large sheet of paper - which he was then photographed with.
But following huge interest in the story, Mr Abideen's claims have come under determined scrutiny across the Internet, with a broad consensus that it is in fact impossible to store that amount of information with the apparatus he has outlined.
...
Alex Young, director of technical marketing at RAID specialist Infortrend Europe said: "With today's laser printer technology (600 dpi or 1200 dpi), it will be hard to achieve this. Also from today's scanner technology, the scanner has to be very precise and free of dust..."
A storage expert, Robin Harris, agreed: "Mr. Abideen has misplaced a few decimal places. Modern offset presses used to print magazines, which he suggests as a medium operate at about 300 dpi, or about 8.7 million dots on an A4 sheet, or 35 million dots with four color printing. There is no lossless way to compress 256 GB (or 2 trillion bits) of data into 35 million dots, or even 35 billion dots. It is the storage equivalent of perpetual motion."»
Lengthy explanation follows — don't miss it if you're still buying the whole thing.
IT Soup:
«This shows how technically illiterate the news reporters are.. The idea of storing something in paper is good, but trusting someone blindly when they say they are showing a movie from a piece of paper is absolutely 囗囗囗囗囗.
...
update 3: I am an Indian and there are many Indians who are brilliant and hardworking, the graduates from IIT are the best in the world!»
Slashdot had it a few days ago.
Sainul Abideen, the fake of the month.
_______
*A good Indian is an honest Indian, that is. Which our story doesn't hold.
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VirusCamp
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asgames
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CatPity
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1200dpi 16色 也就是4bit, 没有打印扫描损失。这么高级的打印和扫描设备，售价不菲，如果“彩虹技术”真的比磁盘经济的话，所用的设备不会比这样的高级多少，那么，可以认为VirusCamp兄的理论最高值的确是理论最高值，据此，作如下推断：VirusCamp 写了：A4 纸 8.27inch 11.69inch
按太高的分辨率：1200dpi 16色 也就是4bit, 没有打印扫描损失
8.27x11.69x1200x1200x4
556855488bit
69606936byte
67975 K
66 M
理论最高值，不可能因为色彩和图案而提高
把256G打印在A4上，扫描，然后按这个式子可以得出扫描后的文件大小66M。
再然后按照“彩虹技术”再次打印，此时应该会得到非常小的一幅图，再再扫描，得到的图片应该是A4的256000分之66
再再再打印，如此循环。
最后得到。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。一个点！！！
阿三真厉害，听说佛教从他们那边传来的，一花一世界指的是不是这个？
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zengsun
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philodewer
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fox2su
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foxhack
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