Information exchange system

• US 20020036571A1
• Filed: 12/03/2001
• Published: 03/28/2002
• Est. Priority Date: 12/04/1997
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Takahashi, Kazunori, Shima, Takeshi, Shojima, Hiroshi, Iino, Takayuki, Sato, Yoshihito
• Granted Patent: US 6,512,464 B2
• Time in Patent Office: Days
• US Class Current: 340/901
• CPC Class Codes: G08G 1/09 Arrangements for giving variable traffic instructions railroad crossing signals B61L; reflectors E01F, G08B; indicating arrangements for variable information by selection or combination of individual elements G09F9/00
• CPC Class Codes: G08G 1/093 Data selection, e.g. prioritizing information, managing message queues, selecting the information to be output
• CPC Class Codes: G08G 1/0962 having an indicator mounted inside the vehicle, e.g. giving voice messages
• CPC Class Codes: G08G 1/096716 where the received information does not generate an automatic action on the vehicle control
• CPC Class Codes: G08G 1/096741 where the source of the transmitted information selects which information to transmit to each vehicle
• CPC Class Codes: G08G 1/09675 where a selection from the received information takes place in the vehicle
• CPC Class Codes: G08G 1/096775 where the origin of the information is a central station

Abstract

An information exchange system is capable of realizing useful information exchange both for the service provider located along the road and providing services and the vehicular driver, by effectively using limited communication capacity of the road-vehicle radio communication. The information exchange system has a vehicle-mounted unit and a road-side unit providing information to the vehicle-mounted unit using a road-vehicle radio communication. The vehicle-mounted unit includes receiving unit receiving information transmitted from the road-side unit through a radio communication and transferring unit transferring at least a part of a content of the received information to a vehicular occupant. The road-side unit including storage unit storing information to be transmitted to the vehicle-mounted unit and transmitting unit transmitting information to the vehicle-mounted unit through the radio communication. The storage means stores at least information relating to a service provider where a service is provided at the location thereof. The road-side unit also includes editing unit editing information stored in the storage means on the basis of a relative position between the service provider and a communication region of the transmitting means and generating an edited information to be transmitted from the transmitting means.

Claims

1. An information exchange system comprising:

a vehicle-mounted unit mounted on a vehicle;

a road-side unit providing information to said vehicle-mounted unit using a road-vehicle radio communication;

said vehicle-mounted unit including receiving means for receiving information transmitted from said road-side unit through a radio communication and transferring means for transferring at least a part of a content of the received information to a vehicular occupant;

said road-side unit including storage means for storing information to be transmitted to said vehicle-mounted unit and transmitting means for transmitting information to said vehicle-mounted unit through the radio communication;

said storage means o said road-side unit for storing at least information relating to a service provider where a service is provided a the location thereof; and

said road-side unit further including editing means for editing information stored in said storage means on the basis of a relative position between said service provider and a communication region of said transmitting means and generating an edited information to be transmitted from said transmitting means.