How do parity recovery files work?

Question

Can anyone explain the mathmatical process that makes it possible for parity recovery files to recreate binary files. Who is credited with this innovation.

Answer 1

Parity recovery files work quite well as long as the number of bits in error are within bounds.

There's an entire branch of mathematics (called 'coding theory') that's devoted to the study of how to encode information and redundant data such that it can be recovered even if it is 'corrupted'. It gts *real* important when you're dealing with information from something such as a deep space probe, where the data (an image, let's say) simply cannot be re-transmitted and it's lost forever. There's a lot to it and not enough space here for any kind of good development.

Check out
http://mathworld.wolfram.com/CodingTheory.html
http://dmoz.org/Science/Math/Applications/Communication_Theory/Coding_Theory/
http://en.wikipedia.org/wiki/Coding_theory
or just type 'coding theory' into any search engine and get several million hits ☺


Doug

Answer 2

ok answer a million is style of appropriate. what we'd desire to understand is what has took place. there is crude malware obtainable that purely gadgets the Hidden characteristic of documents. you are able to unset this characteristic to work out your documents or substitute your device to permit hidden documents to be seen. then you definitely ought to reproduction off the documents and reformat thepersistent to erase malware. to coach hidden documents administration panel Folder innovations View tick the practice Hidden documents determination observe positioned it back later because it somewhat is an working device function to guard needed stuff not your unimportant documents. yet while your stick is broken, and unrecognised, then utilising a deep test restoration application might study the information sectors from the media, practice you a catalogue of documents, enable you to compliment which you want back and then the utility recompose the information right into a chosen folder on your c: power not the media. after this technique you are able to desire to analyze all of the documents, and then restoration the media which will erase it and initiate back with a sparkling usb stick. it ought to wish a low point format application to repair it, disk administration to create partitions, and then formatting to make it usable back

Answer 3

check this out:
http://mp3bookhelper.sourceforge.net/help/SupportFilesCreation/CreationPAR.html