| 摘要 |
According to one embodiment, disconnection/connection of external devices networked as connected devices is automatically detected, and connection environment of the external devices is grasped, so that various functions can be controlled. A disconnection/connection detecting unit detects whether an external device is connected to or disconnected. An authentication unit conducts a mutual authentication when the external device is connected. When the external device is disconnected while the recording medium is being reproduced, a positional information processing unit causes positional information concerning a position being reproduced to be stored. When the external device reconnected again, a reproduction start control unit starts a reproduction of the recording medium according to the positional information.
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