Data recording medium, data recording method, data...

Information security – Prevention of unauthorized use of data including prevention...

Reexamination Certificate

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Details

C714S722000

Reexamination Certificate

active

07496965

ABSTRACT:
On a CD-R, a UID that is unique identification information is pre-recorded. When the CD-R is loaded into an information terminal unit, the UID is read and transmitted to a management server through the Internet. The management server determines whether predetermined data can be recorded onto the CD-R in accordance with the received UID. For example, when the UID is valid, contents data is downloaded from the management server to the information terminal unit and recorded onto the CD-R. In addition, for example, when the UID is valid, a notification that represents that contents data is permitted to be copied or moved is transmitted from the management server to the information terminal unit. As a result, contents data recorded on another recording medium can be copied or moved to the CD-R.

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U.S. Appl. No. 10/497,159, filed Jun. 7, 2004, Sako et al.
U.S. Appl. No. 10/486,920, filed Feb. 24, 2004, Sako et al.

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