| 摘要 |
An information playback apparatus according to one aspect of this invention comprises a first acquisition unit configured to acquire first expansion information from an information storage medium, a first storage unit configured to store the first expansion information acquired by the first acquisition unit, a second acquisition unit configured to acquire second expansion information from an external apparatus via a communication line, a second storage unit configured to store the second expansion information acquired by the second acquisition unit, a transfer control unit configured to transfer the second expansion information stored in the second storage unit to the first storage unit in response to a request that requires the second expansion information, and a playback unit configured to play back the first expansion information and the second expansion information stored in the first storage unit.
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