| 摘要 |
<p>When a size (AO) of contents data (20) is larger than an unrecorded capacity (BO) of a second recording medium (3), the contents data (20) is divided into an unchanged data section (21) and a changed data section (22), and a process of reducing video resolution or a recoding bit rate is performed only to the changed data section (22). Thus, the unchanged data section (21) can be dubbed at a high speed, and a time required for dubbing can be shortened.</p> |
