Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate
2005-05-24
2005-05-24
Rosen, Nicholas D. (Department: 3625)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Usage protection of distributed data files
C705S051000, C705S058000, C380S201000, C380S203000
Reexamination Certificate
active
06898578
ABSTRACT:
A digital information recording apparatus to record digital information to protect copyright of digital information that includes at least first digital information and first copy control information. The digital information recording apparatus records the digital information based upon the first copy control information, which denotes one of: a copy inhibition prohibiting copying of said first digital information; a limited copy permission authorizing a predetermined number of times of copying of said first digital information; and an unlimited copy permission authorizing unlimited copying of said first digital information.
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Aikawa Makoto
Hirahata Shigeru
Noguchi Takaharu
Sasamoto Manabu
Antonelli Terry Stout & Kraus LLP
Hitachi , Ltd.
Rosen Nicholas D.
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