| 摘要 |
PROBLEM TO BE SOLVED: To provide means that quickly finds a route fallen out of a display screen with a simple method.SOLUTION: With a direction and a rotation angle indicated by a directive arrow in a route directive image that is fixedly displayed at a center lower part of a display part of a portable terminal device, the direction and the degree of an angle to rotate the portable terminal device are indicated so as to capture a route within a display range of the display part. Thus, discomfort for a user can be reduced, which occurs due to a delay of a movement of an image for guiding a route with respect to an image in a real space.SELECTED DRAWING: Figure 5 |
