| 摘要 |
PURPOSE: To provide the information portable terminal capable of detecting even the moving direction in the position information detection system using the simple portable telephone system. CONSTITUTION: In a step S10, the position of a user having a present information portable terminal PS is initially registered in the PS. In a step S11, the address of user's destination is inputted to the PS, and the distance from the present position is calculated, and the result is displayed on the PS. When the user having the PS moves, the present position and the going direction of the PS are detected by the method using the intensity of electric field, the angle to CS, a nuclear power clock, or the like in a step S12. The detected present position is checked in a step S14; and when it is correct, the processing advances to a step S14, and the distance from the present position to the destination is calculated, and the result is displayed in a step S15. If the user reaches the destination, all of the flow is terminated; but if he doesn't reach the destination, the processing is returned to the step S12. |
