i used a memory stick pro duo (sony) to click some photos with my camera sony dsct900 .THE MEMORY STICK IS ORIGINAL.when i first connected it to my computer using a usb adapter i was able to view the files but i reconnected it (after few mins) it showed that the card is corrupted (used 0 bytes,free 0 bytes) and i need to format it to use it.then i googled it and found this
From the top top level of your computer guide
http://www.ehow.com/computers/
Is a link to “How to Lose Body Fat by Drinking Vinegar”
http://www.ehow.com/computers/#ixzz2m9M0BdQG
I have grave doubts about the detailed technical competance of a general purpose website that covers
“How to … everything”.
According to Wikepedia your stick could be “exFAT”
https://en.wikipedia.org/wiki/Memory_Stick#Memory_Stick_PRO
Nowhere on that page do I see the word NTFS.
In 2007 Sony themselves provide a special Formatting tool that runs UNDER Windows for certain of their products
http://esupport.sony.com/US/perl/swu-download.pl?upd_id=2860
http://esupport.sony.com/US/p/swu-matrix.pl?upd_id=2860
I do not know what damage MAY have been inflicted upon exFAT formatted data by an NTFS format.
I suggest that you desist from any further attempts at recovery,
and that you keep your stick out of use,
until such time as someone with more knowledge than is able to advise.