| 摘要 |
A technique to notify an emergency center of the position of a caller making an emergency call using a portable terminal equipped with a position information acquiring function is provided such that reliable and accurate notification of position information is performed in cases of emergency. Upon entry of an emergency call instruction on the portable terminal, a detailed positioning/notifying operation is initiated separately from an outgoing call operation. Even after the call is completed, the positioning operation is prohibited from interruption or termination until the positioning/notifying operation is completed. According to additional features of the invention, if the detailed positioning/notifying operation determines that the current area is not GPS-enabled, a charge wave is outputted and a notification of position information provided by an IC tag is given. Furthermore, if the portable terminal gets out of communication range before completion of the positioning/notifying operation, the positioning/notifying operation is maintained. |
