| 摘要 |
PROBLEM TO BE SOLVED: To easily calculate and display a positional relation between a standard axis for indicating a direction in which a user is and a target positional direction, in a positional information service for a portable communication system with a GPS function. SOLUTION: The standard axis is found using a difference in positional informations between two points. One point for finding the axis is positional information S1 in a personal handy phone communication system terminal of the user before moving or a terminal of a third person, and another one point is positional information S2 of the terminal at the present time. The positional informations for finding the axis and positional information S3 of a target are informed to a positional information service providing facility 4 via a communication network 3. The facility 4 calculates the standard axis and the target positional direction to be displayed on a map information, and transmits an image information S5 to the user's terminal via the communication network to be displayed on a display in the terminal. |
