Information processing device and method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Dec 6, 2011
Grant Date -
Jul 12, 2007
app pub date -
Jan 27, 2005
filing date -
Jan 29, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A configuration is provided which enables usage management and secure data management of data newly generated or obtained that is different from data already stored in an information recording medium. New data such as information which the user has newly generated or downloaded related to content information increments of content management information stored in an information recording medium is recorded as configuration data of the content management unit, in the form of encrypted data to which a unit key corresponding to the content management unit, or a unit key corresponding to a new content management unit, has been applied. According to this configuration, secure data management and usage management is realized for new data the same as with data corresponding to original units.
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