[Freedos-devel] FAT patents and freedos?

2006-01-11 Thread Markus Laire
Slashdot has an article Microsoft FAT Patent Upheld
http://yro.slashdot.org/article.pl?sid=06/01/11/0555252tid=155tid=109

The discussion also links to the page FAT File System Technology License
http://www.microsoft.com/mscorp/ip/tech/fat.asp

Does anyone know if this is a problem for FreeDOS or not? The linked
page about FAT license only speaks about using FAT on a media, and not
about products using FAT.

--
Markus Laire


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Re: [Freedos-devel] FAT patents and freedos?

2006-01-11 Thread Jim Hall

Markus Laire wrote:

Slashdot has an article Microsoft FAT Patent Upheld
http://yro.slashdot.org/article.pl?sid=06/01/11/0555252tid=155tid=109

The discussion also links to the page FAT File System Technology License
http://www.microsoft.com/mscorp/ip/tech/fat.asp

Does anyone know if this is a problem for FreeDOS or not? The linked
page about FAT license only speaks about using FAT on a media, and not
about products using FAT.



Right, the page you linked to:
http://www.microsoft.com/mscorp/ip/tech/fat.asp
is the important one.  As I understand it, the impact will be to 
manufacturers of devices.  Specifically mentioned in the fat.asp page are:



-A license for removable solid state media manufacturers
and:
-A license for manufacturers of certain consumer electronics devices


-jh

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Re: [Freedos-devel] FAT patents and freedos?

2006-01-11 Thread Jim Hall


I started looking more into the patents in question, and I'm not really 
concerned with respect to FreeDOS.  The 3 patents listed on 
http://www.microsoft.com/mscorp/ip/tech/fat.asp are:



* U.S. Patent #5,579,517
 Common name space for long and short filenames

* U.S. Patent #5,758,352
 Common name space for long and short filenames

* U.S. Patent #6,286,013
 Method and system for providing a common name space for long and short 
file names in an operating system



The abstracts for each look identical:

An operating system provides a common name space for both long 
filenames and short filenames. In this common namespace, a long filename 
and a short filename are provided for each file. Each file has a short 
filename directory entry and may have at least one long filename 
directory entry associated with it. The number of long filename 
directory entries that are associated with a file depends on the number 
of characters in the long filename of the file. The long filename 
directory entries are configured to minimize compatibility problems with 
existing installed program bases.



None of these are directly related to FAT, per se.  They are more 
directly related to VFAT  LFN support.  IANAL, but this doesn't look 
very applicable to FreeDOS sans LFN.



-jh




Links:

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2Sect2=HITOFFp=1u=/netahtml/search-bool.htmlr=1f=Gl=50co1=ANDd=ptxts1=5579517.WKU.OS=PN/5579517RS=PN/5579517
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2Sect2=HITOFFp=1u=/netahtml/search-bool.htmlr=1f=Gl=50co1=ANDd=ptxts1=5758352.WKU.OS=PN/5758352RS=PN/5758352
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2Sect2=HITOFFp=1u=/netahtml/search-bool.htmlr=1f=Gl=50co1=ANDd=ptxts1=6286013.WKU.OS=PN/6286013RS=PN/6286013


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Re: [Freedos-devel] FAT patents and freedos?

2006-01-11 Thread Blair Campbell
If something ever were to come up to restrict FreeDOS support for FAT,
it would always be possible to implement another filesystem, such as
LeanFS or ext2.

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