| 摘要 |
When an interruption of a bus reset occurs in accordance with the IEEE1394 standard at the time of turn-on of a power source or the like, whether a loop connection has been made or not is discriminated. If it is determined that the loop connection has been made, "i.LINK NG" or "i.LINK LOOP" as a warning display showing that the loop connection has been made is displayed. By displaying such a warning, the user or the like can recognize the fact that the loop connection has been made. A measure for cancelling the loop connection can be performed. If it is determined that the loop connection is not performed, such a warning display is not performed but the ordinary operation according to the IEEE1394 standard is performed.
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