| 摘要 |
A control unit ( 3 ) is provided for storing time information of data which are received for the first time by a receiving unit ( 1 ) in a memory ( 3 a), and for, every time when the receiving unit ( 1 ) detects time information, acquiring the time information from the receiving unit ( 1 ), calculating the difference between the acquired time information and the time information of the first received data stored in the memory ( 3 a), and, when the difference reaches a predetermined amount, outputting a command for starting a playback of data to a playback unit ( 4 ). The playback unit ( 4 ) starts a playback of the data stored in the storage unit ( 2 ) when the command for starting a playback of data is outputted from the control unit ( 3 ).
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