Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate
2007-02-13
2007-02-13
Cheung, Mary D. (Department: 3621)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Usage protection of distributed data files
C713S165000
Reexamination Certificate
active
09761719
ABSTRACT:
A digital contents distribution system including a client, a digital contents server, a roaming server, and a network connected between these terminals. The roaming server includes a receiving section for receiving from the digital contents server a digital content with an intellectual property right protection system protecting the digital content, and a section for converting the intellectual property right protection system of the received digital content into another kind of intellectual property right protection system, and a section for delivering the converted system to the client.
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Ando Tsutomu
Inoue Hiroshi
Yokomizo Yoshikazu
Canon Kabushiki Kaisha
Cheung Mary D.
Fitzpatrick ,Cella, Harper & Scinto
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