| US 7,546,205 B2 | ||
| On-vehicle information terminal route characteristics extraction apparatus and route characteristics display method | ||
| Akio Sumizawa, Zama (Japan); Hiroshi Minagawa, Zama (Japan); and Wataru Oikubo, Zama (Japan) | ||
| Assigned to Xanavi Informatics Corporation, Zama-shi (Japan) | ||
| Appl. No. 10/572,319 PCT Filed Sep. 15, 2004, PCT No. PCT/JP2004/013434 § 371(c)(1), (2), (4) Date Dec. 20, 2006, PCT Pub. No. WO2005/029002, PCT Pub. Date Mar. 31, 2005. |
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| Claims priority of application No. 2003-325773 (JP), filed on Sep. 18, 2003. | ||
| Prior Publication US 2007/0198172 A1, Aug. 23, 2007 | ||
| Int. Cl. G01C 21/30 (2006.01) | ||
| U.S. Cl. 701—209 [701/210; 340/995.14; 340/995.19; 340/995.23; 340/995.27] | 13 Claims |
| 1. An information terminal, comprising:
a route search unit that searches for a plurality of routes connecting a current position to a destination;
a table preparing unit that prepares a block name-distance table for each of the routes, which is constituted with road names
of roads included in the routes and distances over which individual blocks of the routes extend, each corresponding to specific
road name, based upon route data containing link information of the routes;
an identification unit that identifies road names of blocks each of which extends over a longest distance in each of the routes
based upon the block name-distance table;
a characteristics extraction unit that extracts the identified road names as characteristics of the routes; and
a display control unit that displays the extracted characteristics of each of the routes at a display device.
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