INFORMATION PROCESSING DEVICE AND INFORMATION PROCESSING METHOD

摘要

A data storage unit (111) which stores attribute management information for managing attribute information of a content file included in data recorded on a recording medium which has been used previously and medium management information including partial medium identification information designated in each predetermined part by at least one of a content file placed immediately under a layer formed in the data recorded on the recording medium and a layer, a medium identification information comparison unit (107) which compares partial medium identification information generated from data of the recording medium which is going to be used and the partial medium identification included in the medium management information, and a tag management information update unit (113) which updates the attribute information partially when a result of the comparison indicates disagreement are included.

主权项

1. An information processing device comprising:
a data storage unit which stores attribute management information for managing attribute information of a content file included in data recorded on a recording medium which has been used previously and, for each predetermined part, medium management information including partial medium identification information identified by at least one of a layer and a content file placed immediately under a layer formed in the data recorded on the previously used recording medium; a data acquisition unit which acquires data from a recording medium which is used currently; a file information analysis unit which analyzes the data acquired by the data acquisition unit and generates entry management information which indicates a layer formed in the acquired data and at least one of a content file and a layer placed immediately under the layer formed in the acquired data; a medium identification information generation unit which generates, for each predetermined part, partial medium identification information identified by at least one of the content file and the layer placed immediately under the layer formed in the data acquired by the data acquisition unit, from the entry management information; a medium identification information comparison unit which compares the partial medium identification information included in the medium management information and the partial medium identification information generated by the medium identification information generation unit; and an attribute management information update unit which updates the attribute management information on the basis of the attribute information of the content file included in the predetermined part for which the medium identification information generation unit has generated the partial medium identification information determined as being not equal to the partial medium identification information stored in the data acquisition unit in accordance with a result of the comparison by the medium identification information comparison unit.