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TomTom Settlement Aftermath: Get the FAT Out (Groklaw)

TomTom Settlement Aftermath: Get the FAT Out (Groklaw)

Posted Apr 2, 2009 16:26 UTC (Thu) by JoeBuck (subscriber, #2330)
Parent article: TomTom Settlement Aftermath: Get the FAT Out (Groklaw)

Go read the patent claims in question, and notice that every single claim requires the creation of a new filename. In other words, a read-only implementation cannot infringe. Also, an implementation that only allows the creation of traditional "8.3" filenames cannot infringe. So even if these patents are upheld, Linux systems can still read cards from digital cameras.


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TomTom Settlement Aftermath: Get the FAT Out (Groklaw)

Posted Apr 2, 2009 18:49 UTC (Thu) by martinfick (subscriber, #4455) [Link]

And delete I presume? It is after all, probably the most common write operation to a camera card (not USB devices in general) done by a linux system.

TomTom Settlement Aftermath: Get the FAT Out (Groklaw)

Posted Apr 3, 2009 2:49 UTC (Fri) by jamesh (guest, #1159) [Link]

I'm pretty sure that when you deleted a file under DOS it was still deleted when you booted into a long filename capable OS. That was one of the design goals for VFAT.

TomTom Settlement Aftermath: Get the FAT Out (Groklaw)

Posted Apr 3, 2009 10:53 UTC (Fri) by etienne_lorrain@yahoo.fr (guest, #38022) [Link]

Just gone and read Wiki (search FAT licensing) at
http://en.wikipedia.org/wiki/File_Allocation_Table
And it seems you should not have a common namespace for short and long filenames - i.e. a readonly implementation where a file can be open by its two names (when it has a long filename) would be covered by the patent.
That is what Linux VFAT do - moreover Linux VFAT is R/W.

TomTom Settlement Aftermath: Get the FAT Out (Groklaw)

Posted Apr 10, 2009 0:06 UTC (Fri) by spitzak (guest, #4593) [Link]

I don't think you can open the file by both names in Linux. The ~ 8.3 name is completely hidden.

TomTom Settlement Aftermath: Get the FAT Out (Groklaw)

Posted Apr 14, 2009 11:52 UTC (Tue) by etienne_lorrain@yahoo.fr (guest, #38022) [Link]

Yes you can, please look at:
http://lwn.net/Articles/326437/

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