EP0756153A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Navigation system for vehicles
Assignee: Aisin AW Co Ltd
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Filing: 1996-07-12
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Granted: —
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Expires: 2016-07-12
Abstract
Abstract In a vehicular navigation system for suggesting a route to a destination according to an already set route with the purpose of searching the optimal route in response to changes of traffic conditions near the present position of the vehicle, the system comprises a present position calculating means 4A for calculating the present position of the vehicle, an information storage unit 3 for storing suggested road data 3B for suggesting the route, a traffic information acquiring means 4F for acquiring traffic information 5, a route searching means 4B for searching the optimal route from the present position to the destination based on a navigation program 3A, the suggested road data, and the acquired traffic information, and an area setting means 4C for setting a given range near the present position of the vehicle, whereby said route searching means selects and acquires traffic information corresponding to the suggested road data within the preset area among the suggested road data, and searches the route by converting the suggested road data based on the acquired traffic information.
Inventors
- 👤 Katsuhiko Mutsuga
- 👤 Shinichi Kato
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 17:38
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/09; G08G1/0962; G08G1/0968; G08G1/096805; G08G1/096827; G01; G01C; G01C21/00; G01C21/26; G01C21/34; G01C21/3453; G01C21/3492; G08G1/096833; G08G1/096838; G08G1/096844; G08G1/096855; G08G1/096861; G08G1/096872
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
145 words
A vehicular navigation system for suggesting a route to a destination inputted according to an already set route, comprising: a present position calculating means for calculating the present position of the vehicle; an information storage unit for storing a suggested road data for searching a route; a traffic information acquiring means for acquiring traffic information; a route searching means for searching the optimal route from the present position to the destination based on a navigation program, said suggested road data and said acquired traffic information; and an area setting means for setting a given range of area near the present position of the vehicle, whereby: said route searching means selects and acquires traffic information corresponding to the suggested road data within the preset area among said suggested road data and searches the route by converting the suggested road data based on the acquired traffic information.
Claim 2
Dependent Claim
162 words
A vehicular navigation system for suggesting a route to a destination inputted according to an already set route, comprising: a present position calculating means for calculating the present position of the vehicle: an information storage unit for storing a suggested road data for searching a route; a traffic information acquiring means for acquiring traffic information; a route searching means for searching the optimal route from the present position to the destination based on a navigation program, said suggested road data and said acquired traffic information; an area setting means for setting a given range of area near the present position of the vehicle, a neighborhood data acquiring means for suggested road data within said preset area: and a neighborhood searching data memory means for storing said acquired neighborhood searching data, whereby: said route searching means selects and acquires traffic information corresponding to the neighborhood searching data and searches the route by converting the nighborhood searching data based on the acquired traffic information.
Claim 3
Dependent Claim
21 words
A vehicular navigation system according to Claim 1 or 2, wherein said traffic information is acquired at a given time interval.
Claim 4
Dependent Claim
22 words
A vehicular navigation system according to Claim 2, wherein said neighborhood searching data is acquired and updated at a given time interval.
Claim 5
Independent Claim
33 words
A system according to any of Claims 1 to 4, wherein said suggested road data is divided into a plurality of blocks and is stored, and said area is set for each block.
Claim 6
Independent Claim
25 words
A system according to any of Claims 1 to 5, wherein said area is within a given distance from the present position of the vehicle.
Claim 7
Independent Claim
26 words
A system according to any of Claims 1 to 6, wherein said area is within a given angle from the present position to the advancing direction.
Claim 8
Independent Claim
36 words
A system according to any of Claims 1 to 7, wherein said area is within a given distance from a point located ahead of the present position by a given distance and in a given direction.
Claim 9
Independent Claim
49 words
A system according to any of Claims 1 to 8, wherein a searching cost is added in advance to said suggested road data, and said route searching means searches the route by converting the searching cost of the road data with acquired traffic information among said suggested road data.
Claim 10
Independent Claim
39 words
A system according to any of Claims 1 to 9, wherein said route searching means searches the route in case it is judged that traffic information corresponding to the suggested road data within the preset area has been acquired.
Claim 11
Independent Claim
28 words
A system according to any of Claims 1 to 10,it is notified that traffic information corresponding to the suggested road data within the preset area has been acquired.
Claim 12
Independent Claim
40 words
A system according to any of Claims 1 to 11,wherein it is notified that the route has been changed in case the route searched by said route searching means has been turned to a route different from the initial route.
Claim 13
Independent Claim
66 words
A system according to any of Claims 1 to 12, wherein said route searching means searches the route only based on the neighborhood searching data and searches to connect to the initial route from the present position, and if connected to the initial route, the new route is considered as an inductive route, and if not connected, the initial route is considered as an inductive route.
Claim 14
Independent Claim
69 words
A system according to any of Claims 1 to 13, wherein said route searching means searches the route based on the neighborhood data, searches the route to connect it to the initial route from the present position, and if connected to the initial route, the new route is considered as an inductive route, and if not connected, route searching is performed with the suggested road data to the destination.
References Cited (Backward Citations)
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