COMMERCIAL VEHICLE ALLOCATION SYSTEM

Japanese Patent JP2002298289

A

To improve the allocation efficiency in the request of an allocation of car by a portable terminal.

When the portable terminal 3 is within a triangular area surrounded by three base stations 4A-4C, he position of the portable terminal is detected by the manner of triangulation of the basis of each received field intensity of each base station receiving the radio wave from the portable terminal, and transmits the position information to a center 10 in the request of the allocation of car by the portable terminal. In the center 10, when the position information is received, it is displayed as the position of the portable terminal of a display part 34 where the position of a taxi 40 is already displayed, the position information is transmitted to the taxi according to the allocation instructing operator, so that the GPS navigation system 42 of the taxi retrieve retrieves the route from the present position of the taxi 40 to the position of the allocation requester shown by the position information, and displays the retrieval result.

JPH0816985	ROUTE GUIDING NAVIGATION DEVICE
JP3587448	Position detection system and position detection method
WO/2018/044654	GEO-REFFRENCING IDENTIFICATION (GRID) TAG

MITSUOKA HIROMASA
ITAGAKI NOBUYUKI
NOTO SO

JP2001098243A

October 11, 2002

March 30, 2001

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TAMURA ELECTRIC WORKS LTD

G01S19/14; G08G1/0969; G08G1/123; H04B7/26; H04W4/02; H04W4/04; G01C21/00; H04W64/00; H04W88/18; (IPC1-7): G08G1/123; G01C21/00; G01S5/14; H04B7/26

JPH09182145A	1997-07-11
JPH10105889A	1998-04-24
JPH09191494A	1997-07-22
JPH1146164A	1999-02-16
JP2000050345A	2000-02-18
JPH09115095A	1997-05-02

Masaki Yamakawa

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