Information recording medium, manufacturing method of its recording medium, information process unit and copyright management system
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United States of America Patent
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Jul 29, 2008
Grant Date -
May 29, 2003
app pub date -
Oct 22, 2002
filing date -
Oct 24, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Medium individual information formed an information recording medium is obtained, and a management key used for recording or regeneration on the information recording medium corresponding to the medium individual information is generated, and the predetermined information is encoded to create encode data by using the management key when recording predetermined information, the encode data recorded on the information recording medium is decoded to create decode data by using the transferred management key when regenerating the predetermined information.
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