Recording medium map data recording device, map display device, map data recording method, map display method, map data recording program, and map display program

摘要

Map data storage device (100), the setting unit (104), the upper limit value or less that the total amount of data has been acquired maximum data amount acquisition unit (102), the upper limit number of data acquisition unit or the total number is (103) Setting a group that is a combination of parcel data to the upper limit number or less that is acquired by. Then, the compressed together in groups parcel data compression section (105), to record the recording unit (101) (106) recording control unit. In addition, the map display device (110), is read in groups parcel data from the recording unit (101) by (112) reading section, I will stretch the parcel data that has been read by the decompression unit (113). Then, the display (111) the display unit by selecting the parcel data included in the display range from the parcel data and controls the display unit (111), were extended by (114) a display control unit.