| 摘要 |
PROBLEM TO BE SOLVED: To reduce the load of POI search, and to quickly provide the proper number of pieces of POI information. SOLUTION: This POI search system is provided with: a rectangular area determination table 372 in which area determination data for determining a rectangular area with a prescribed area are set for each prescribed area and a threshold table 371 in which a threshold has been set, the threshold being for selecting the rectangular area according to the number of POIs searched by a POI search means 33. A rectangular area determination means 37 discriminates whether or not it is necessary to change the rectangular area by referring to the threshold table 371 and the rectangular area determination table 372 based on the number of POIs searched by the POI search means 33, and when it is necessary to change the rectangular area, the rectangular area determination means 37 acquires the pertinent rectangular area determination data by referring to the threshold table 371 and the rectangular area determination table 372, and changes the area of the rectangular area based on the acquired rectangular area determination data, and the POI search means 33 searches the POI in the changed rectangular area, and sorts the search result by a sorting means 331, and displays it at a display means 25. COPYRIGHT: (C)2009,JPO&INPIT |
