Patent ID: 8615158

Claim:
A playback apparatus for playing back an AV stream recorded on a removable recording medium and generating subtitle data for displaying subtitles corresponding to the AV stream, the playback apparatus comprising: circuitry configured to control reading of first information including a character object and attribute data for displaying the subtitles from the recording medium or a storage unit within the playback apparatus; store the character object included in the first information; store the attribute data included in the first information; acquire font data and convert the character object into the subtitle data using the attribute data and the font data; acquire a first file system of a first group of data stored in the recording medium and a second file system of a second group of data stored in the storage unit of the playback apparatus; and generate a virtual file system including at least part of each of the first group of data and the second group of data on the basis of the first file system of the first group of data and the second file system of the second group of data.