| 摘要 |
A positional information recorder includes a receiver configured to receive a wireless signal, an operation section configured to indicate a sign for recording positioning information, a positional information calculator configured to measure a geographical position based on the wireless signal and calculate positioning information according to the position, a positioning information recorder configured to record the calculated positioning information, a movement locus information calculator configured to calculate displacement information including a moving distance and a direction from a standard position, a relative positional information recorder configured to calculate relative positional information according to a relative position from the standard position by the displacement information when the positioning information is not obtained, and record the relative positional information associated with information according to the sign, and a positional information convertor configured to covert into positioning information the relative positional information already recorded in the relative positional information recorder when the positioning information is obtained.
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