| 摘要 |
A recording device has a recording medium, such as an HDD, for recording information signals such as an audio signal and a video signal. When it is detected that the recording device is connected to a cradle serving as a power supply, the power supply supplies the continuous power to the recording device, and a fragmentation rate of the information signal recorded to the recording medium is a predetermined value or more, the defragmentation of the recording medium is automatically executed. Thus, the damage of the recording medium due to the vibrations and the unnecessary power-consumption of battery are prevented and the convenience of the automatic defragmentation is ensured.
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