Title: Information processing device and method
Application Number: 200580003683 Application Date: 2005.01.27
Publication Number: 1914850 Publication Date: 2007.02.14
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04L9/10;G06F12/14;G09C1/00;G11B7/007;G11B7/30;G11B20/10;G11B20/12
Applicant(s) Name: Sony Corp. Address:
Inventor(s) Name: Watanabe Ayako;Takashima Yoshikazu
Attorney & Agent: bo maiwen huang xiaolin
Abstract:
    It is possible to provide use management for data generated or acquired after data which has been stored in an information recording medium, and secure data management. Late data such as information generated or downloaded later by a user in association with content information in the content management unit stored in an information recording medium is made into encrypted data by applying a unit key corresponding to a content management unit or a unit key corresponding to a new content management unit and recorded as data constituting the content management unit. With this configuration, it is possible to realize secure data management and use management of the late data like the original-unit-corresponding data.
Time: 18