Patent ID: 8819091
Filing Date: 2014-08-26
Classification: G11B

Abstract:
1. An information processing apparatus comprising: processing circuitry; a communicating section that executes communication with a server; a local storage section that stores subsequent data acquired from the server, wherein the subsequent data corresponds to substance data on a disc; and a data processing section, implemented by the processing circuitry, that executes an acquisition process of the subsequent data, and a data playback process using the substance data stored on the disc and the subsequent data stored on the local storage section, wherein the data processing section: builds a virtual file system for reading the substance data stored on the disc and the subsequent data stored in the local storage section, by using a file name conversion table to convert file names of the subsequent data into file names in the virtual file system, and combining the substance data from the disc and the subsequent data from the local storage section into the virtual file system, at the time of the data playback process, performs the acquisition process of the subsequent data by transmitting a package ID to the server at the time of the acquisition process of the subsequent data, the package ID being information specifying a package, wherein the package contains elements within a complete file set that are necessary for building or updating the virtual file system, the complete file set including some combination of substance data of the subsequent data, a key file corresponding to the substance data, a usage control information file corresponding to the substance data, a binding unit manifest file (BUMF) including the file name conversion table corresponding to the substance data, a signature file for verifying the authenticity of the BUMF, wherein the package ID, transmitted to the server at the time of the acquiring process of the subsequent data, is stored on the disc in correspondence with a reference to the subsequent data, wherein the package ID is stored on the disc without the storage of the subsequent data, which is acquired by the performance of the acquisition process of the subsequent data.