EP0772174A1
Expired / Lapsed
EP
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Navigation system
Assignee: Aisin AW Co Ltd
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Filing: 1996-10-30
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Granted: —
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Expires: 2016-10-30
Abstract
Abstract A navigation system provides road guidance by displaying information relating to roads on a structure shape map, together with landmark information, in such a manner that only information around the present position is highlighted. The system retrieves road information in the direction of travel from the present position according to the vehicle speed, or road information within a predetermined angular or distance range in the direction of travel. Information relating to roads includes information indicating a one-way road, information indicating a road into which entry is prohibited, and information indicating a pedestrian crossing and a railroad crossing. These items of information are displayed by using marks, and the landmark information is displayed by using landmarks, thereby displaying information necessary for travel in a readily perceivable manner according to the travel conditions. When the vehicle enters a parking lot in the middle of the guidance for a route to a destination, the system searches for a route from the parking lot to the destination and outputs the found route by using a structure-shape map. The parking lot in this case is one within a predetermined walking distance from the destination. If the parking lot is in close proximity of the destination, further guidance is not necessary and the guidance is terminated.
Inventors
- 👤 Seiji Hayashi
- 👤 Kihachi Hayashida
- 👤 Mitsuhiro Nimura
- 👤 Yasunobu Ito
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 18:03
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/09; G08G1/0962; G08G1/0968; G01; G01C; G01C21/00; G01C21/26; G01C21/34; G01C21/36; G01C21/3679; G01C21/3682; G01C21/3626; G01C21/3658; G08G1/0969
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
131 words
A navigation system for providing road guidance by displaying a structure-shape map showing building shapes and roads, said navigation system comprising: present-position sensing means for sensing a present position; storage means for storing guidance information including information regarding roads, building shapes and landmark information; display means for displaying a structure-shape map including information regarding surroundings of the present position on the basis of the present position sensed by said present-position sensing means and the guidance information stored in said storage means; and display control means for controlling information displayed on said display means; wherein said display control means has information selecting means for selecting information regarding roads from said storage means on the basis of the present position, and said display means displays the information selected by said information selecting means.
Claim 2
Dependent Claim
48 words
The system according to claim 1, wherein said present position sensing means has vehicle speed sensing means for sensing a vehicle speed, and said display control means controls information displayed on said display means on the basis of the vehicle speed sensed by said vehicle speed sensing means.
Claim 3
Dependent Claim
33 words
The system according to claim 1 or 2, wherein said display control means retrieves information relating to roads around the present position and highlights said information relating to roads on the structure-shape map.
Claim 4
Dependent Claim
16 words
The system according to claim 3, wherein said information relating to roads is a road sign.
Claim 5
Dependent Claim
20 words
The system according to claim 3 or 4, wherein said information relating to roads is information indicating a one-way road.
Claim 6
Dependent Claim
25 words
The system according to claim 3, 4, or 5, wherein said information relating to roads is information indicating a road into which entry is prohibited.
Claim 7
Independent Claim
26 words
The system according to 3, 4, 5, or 6, wherein said information relating to roads is road information indicating a pedestrian crossing and a railroad crossing.
Claim 8
Independent Claim
29 words
The system according to any one of claims 3 to 7, wherein said display control means displays said information relating to roads by highlighting a mark indicating said information.
Claim 9
Independent Claim
38 words
The system according to any one of claims 1 to 8, wherein said display control means retrieves landmark information around the present position and displays the retrieved landmark information on said structure-shape map displayed on said display means.
Claim 10
Dependent Claim
18 words
The system according to claim 9, wherein said display control means retrieves landmark information around a suggested intersection.
Claim 11
Independent Claim
19 words
The system according to claims 9 or 10, wherein said display control means displays a landmark as landmark information.
Claim 12
Dependent Claim
146 words
A navigation system arranged to calculate a route to an entered destination and to provide guidance by a display or voice according as a present position moves, said navigation system comprising: present-position sensing means for sensing a present position; route calculating means for calculating a route to a destination; storage means for storing information including building-shape, information landmark information and guidance information; retrieval means for retrieving, from said storage means, landmark information along the route calculated by said route calculating means; display means for displaying a structure-shape map containing information regarding surroundings of the present position on the basis of the present position sensed by said present-position sensing means and the guidance information stored in said storage means; and display control means for controlling information displayed on said display means; wherein said display control means controls a display of landmark information retrieved by said retrieval means.
Claim 13
Dependent Claim
158 words
A navigation system for providing road guidance by displaying a structure-shape map showing building shapes and roads, said navigation system comprising: recording-medium read means for reading out a program and data for displaying a structure-shape map showing building shapes and roads to provide road guidance, said program and data having been recorded on a recording medium; non-volatile recording means for storing a program; program read means for reading the program read out by said recording-medium read means into said non-volatile recording means; display means for displaying said structure-shape map; and processing means for executing the program read into said non-volatile recording means by said program read means, thereby displaying said structure-shape map on said display means on the basis of the data recorded on said recording medium, which is read out through said recording medium read means, to provide road guidance; wherein said processing means displays specific information regarding surroundings of the present position on said structure-shape map.
Claim 14
Dependent Claim
77 words
A recording medium for a navigation system which provides road guidance by displaying a structure-shape map showing building shapes and roads, said recording medium having the record of: structure-shape map data having information regarding shape of each of various structures, such as buildings, facilities and so forth, and information belonging to each of the structures; and a program for drawing and displaying a shape and name of each structure on the basis of said structure-shape map data.
Claim 15
Dependent Claim
32 words
The recording medium according to claim 14, wherein said program has a program for retrieving information relating to roads around the present position and displaying the retrieved information in a highlighted form.
Claim 16
Dependent Claim
29 words
The recording medium according to claim 14 or 15, wherein said program has a program for retrieving landmark information around the present position and displaying the retrieved landmark information.
Claim 17
Dependent Claim
207 words
A navigation system for a vehicle, which searches for a route to a destination and provides route guidance, with a vehicular navigation system having a re-search function, said system comprising: a present-position sensing unit for sensing a present position of a vehicle equipped with said navigation system; an information storage device in which map information and other route information necessary for a route search and route guidance have been stored; an input unit for entering a location such as a destination and also entering an instruction to execute a search for a route to said destination from the present position sensed by said present-position sensing unit; an output unit for outputting information for route guidance; and a central processor for executing a search for a route to said destination from said present position on the basis of said map information, temporarily storing the route found by the search, and outputting, to said output unit, a signal for giving route guidance based on said route; wherein, upon detection of entry into a parking lot, said central processor judges a distance from said parking lot to said destination, executes a re-search for a route from said parking lot to said destination, and outputs the route found by said re-search.
Claim 18
Dependent Claim
35 words
The system according to claim 17, wherein said central processor executes said re-search on condition that said parking lot is within a predetermined distance from said destination and not in close proximity of said destination.
Claim 19
Dependent Claim
46 words
The system according to claim 17 or 18, wherein if said parking lot is not within a predetermined distance from said destination, said central processor judges said parking lot to be an mid-route location on the way to said destination, and does not execute a re-search.
Claim 20
Dependent Claim
27 words
The system according to claim 17, 18 or 19, wherein if said parking lot is in close proximity of said destination, said central processor terminates said guidance.
Claim 21
Dependent Claim
37 words
The system according to claim 17, 18, 19 or 20, wherein said central processor outputs the found route to said destination by using a shape map showing shapes of structures such as buildings, facilities and so forth.
Claim 22
Independent Claim
37 words
The system according to any one of claims 17 to 21, wherein said shape map displays shapes of structures in different display modes according to features of the structures with priority given to names of the structures.
Claim 23
Independent Claim
20 words
The system according to any one of claims 17 to 22, wherein said central processor prints out said shape map.
Claim 24
Independent Claim
44 words
The system according to any one of claims 3 to 13 or 17 to 23, wherein said display control means retrieves said information within a range in a direction of travel from the present position, said range being varied according to a vehicle speed.
Claim 25
Independent Claim
33 words
The system according to any one of claims 3 to 13 or 27 to 24, wherein said display control means retrieves said information within a predetermined angular range in a direction of travel.
Claim 26
Independent Claim
33 words
The system according to any one of claims 3 to 13 or 17 to 25, wherein said display control means retrieves said information within a predetermined distance range in a direction of travel.
References Cited (Backward Citations)
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