Patent ID: 7805058

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: reading control means for controlling 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; first decoding means for decoding the AV stream whose reading is controlled by the reading control means; second decoding means for decoding the first information whose reading is controlled by the reading control means; counting means for obtaining a count value serving as a reference for processing timing for decoding of the AV stream by the first decoding means; calculation means for calculating a reference for processing timing for decoding of the first information by the second decoding means on the basis of the count value obtained by the counting means; character object storing means for storing the character object included in the first information decoded by the second decoding means; attribute data storing means for storing the attribute data included in the first information decoded by the second decoding means; and conversion means for acquiring font data and converting the character object stored in the character object storing means into the subtitle data by using the attribute data stored in the attribute data storing means and the font data.