Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate
2007-03-06
2007-03-06
Fischer, Andrew J. (Department: 3621)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Usage protection of distributed data files
C705S051000, C705S052000, C705S053000, C705S054000, C705S055000, C705S056000, C705S058000, C705S059000, C341S061000, C341S126000, C341S143000, C341S158000
Reexamination Certificate
active
09570193
ABSTRACT:
Devices, systems and methods for restricting use of digital content are provided. Among those embodiments which may be construed as providing a method for restricting use of digital data, a preferred method includes the steps of: enabling a user to receive digital data; and preventing the user from copying the digital data to a digital data recording medium if: (a) copy information corresponding to the digital data indicates that such copying is not to be permitted; or (b) the digital data recording medium is not an authorized digital data recording medium.
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Fischer Andrew J.
Hewlett--Packard Development Company, L.P.
Sherr Cristina Owen
LandOfFree
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