| 摘要 |
PROBLEM TO BE SOLVED: To allow the newest landmark information to be quickly displayed at low cost on a map supplied by any maker. SOLUTION: A figure data converting part 7, when receiving a signal from a landmark data control part 11, outputs a command signal to the landmark data control part 11 to cause the control part 11 to produce a control signal for changing the source of the landmark information from a map data expansion memory 6 to a landmark data storage part 12 at the stage of the process of converting the landmark information into figure data. The landmark data control part 11, when receiving the command signal from the figure data converting part 7, causes a landmark changing part 10 to change the source of the landmark information from the map data expansion memory 6 to the landmark data storage part 12, and outputs a read signal to the landmark data storage part 12 to cause it to read the landmark information that corresponds to page information. |
