| 摘要 |
<p>While a video download service is used, an incompletely recorded file, i.e., so-called a trash file, could remain in a medium if the download is interrupted. When a content writing unit (112) records a content in a medium (109), a control unit (103) controls the content writing unit (112) to record a dummy license, which is generated by a dummy license generating unit (105) and has an expired expiration date, in the medium. When the recording of the content in the medium (109) is complete, the control unit (103) controls so that the dummy license recorded in the medium is deleted and a valid license is recorded in the medium.</p> |
