| 摘要 |
PURPOSE:To allow the device to have a function for informing its fact to a user in the case of crossing a time change line by a movement of the present position, in the electronic map device for displaying map data from a CD-ROM on an image display device. CONSTITUTION:In the electronic map device, a time change line memory 12 is provided, and a CPU 11 decides in which time zone of a time change line the present position is contained at the time of calculating the present position, and decides that the present position crosses the time change line at the time when this time zone is varied in connection with a movement of the present position. In such a way, for instance, in the United States of America, etc., in the case time divisions are different in accordance with regions, time change line information can be informed to a user at the time of movement, in addition to the present position information, and this device can be used as not only a map but also a time management apparatus. |
