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The information on Groklaw is not intended to constitute legal advice. While Mark is a lawyer and he has asked other lawyers and law students to contribute articles, all of these articles are offered to help educate, not to provide specific legal advice. They are not your lawyers.

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Because it makes no difference | 1347 comments | Create New Account

Comments belong to whoever posts them. Please notify us of inappropriate comments.

Because it makes no difference

Authored by: Anonymous on Wednesday, June 13 2012 @ 09:43 PM EDT

The infringing patent could be anywhere in the data stream - how about an
infringement on the way that the checksum for a data sector on the disc is
calculated? (I'm sure you are aware that not all the magnetic flux changes are
usable data).

One of the old protection schemes was an unformatted data sector which whould
return random values every time you read it. How can you detect the difference
between that and a genuinely bad sector? If the patent was for checking for
these 'ghost sectors' - as they used to be called in protection circles - then
how could you see that? Even better, what if one machine had the ghost sector
and the other happened to have a bad sector in the corresponding place?

As you should be able to see now, you cannot tell the difference between an
infringing and non-infringing 'black box'.

[ Reply to This | Parent | # ]

You find the code for checking for the bad sector - Authored by: Anonymous on Thursday, June 14 2012 @ 09:32 AM EDT

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