Patent ID: 7536420
Filing Date: 2009-05-19
Classification: G11B,Y10S

Abstract:
1. An information processing apparatus comprising: a data processor configured to obtain first content stored in a first information recording medium and second content which is stored in a second information recording medium and which is usable together with the first content, and to perform content playback processing by using the first content and the second content, wherein the data processor calculates a hash value of a certificate stored in the first information recording medium, and verifies the calculated hash value against a hash value stored in a content certificate corresponding to the first content, and if the calculated hash value and the hash value stored in the content certificate coincide with each other, the data processor performs the content playback processing by using the first content and the second content, wherein the data processor further obtains identification information recorded in the first information recording medium, and obtains, as the second content, content that is usable in association with the identification information from the second information recording medium to perform the content playback processing by using the first content and the second content, wherein the data processor constructs a virtual file system when performing the playback processing by using the first content and the second content, and the identification information is recorded, as a single file, in a directory in the first information recording medium which is not included when constructing the virtual file system, and the identification information is obtained from the first recording medium.