Patent ID: 7363307

Claim:
A transmitting apparatus for transmitting a hierarchical structure of a directory for hierarchically managing locations of contents data, comprising: a managing unit for managing a hierarchical structure of a directory composed of a container entry and a leaf entry, the container entry containing information in the immediately lower hierarchical level thereof, the leaf entry being disposed in the immediately lower hierarchical level of the container entry, the leaf entry not containing information in the immediately lower hierarchical level thereof; a detecting unit for detecting a change of the hierarchical structure of the directory managed by said managing unit and obtaining position information and identification information corresponding to the detected change, the position information representing the position of a container entry in the hierarchical structure of the directory, the identification information identifying a leaf entry corresponding to the hierarchical structure of the directory; and a transmitting unit for transmitting the position information and the identification information wherein, the position information includes a schema version, the schema version being a value that changes correspondingly to a change of the position of the container entry in the hierarchical structure of the directory.