EP0348528A1
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EP
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Vehicle navigation system
Assignee: Aisin AW Co Ltd
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Filing: 1988-12-23
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Granted: —
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Expires: 2008-12-23
Abstract
Abstract This invention relates to a vehicle navigation system including an input device (1), a CPU (2)- a display (3) and a storage device (4). The storage device (4) is a CD-ROM or the like for stonng the network data and information of each point as the destination or the present position and map data (10), a crossing list (11). a destination list (12), road data (13), a place name list (14). etc.. are stored therein. When the destination is inputted and designated by the input means (1), the CPU (2) interacts with a program stored in a ROM (9a) in order to set data for reaching the destination by means of the retrieval of a route corresponding to each point stored in the storage device (4) and stores it in memory such as a RAM (9b). In an embodiment. a non-volatile area for storing the starting point data (the east longitude. the north latitude, etc.) is disposed in the RAM (9b) and when data is inputted by a reset switch at the time of the inputting of the starting point, data in this non-volatile area can be rewritten. The data thus written is held until the reset switch is pressed again to input a location position and is not erased even when an ignition switch is turned off.
Inventors
- 👤 Mitsuhiro Nimura
- 👤 Shoji Yokoyama
- 👤 Koji Sumiya
- 👤 Shuzo Moroto
- 👤 Kiyohide Kato
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 00:57
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/26; G01C21/34
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
116 words
A vehicular navigation apparatus for outputting guidance information for travel to a destination, the apparatus having an input unit for inputting a point of departure and a destination, a memory unit for storing destination information and map information, a display unit for outputting said destination information and said map information in response to input information from said input unit, and memory means which, whenever said departure-point information is inputted, rewrites a non-volatile RAM and stores said information, characterized in that when the destination is reached, this destination information is set as departure-point information, and if a return to said departure point is selected, the departure-point information set in said non-volatile RAM is set as destination information.
Claim 2
Dependent Claim
116 words
A vehicular navigation apparatus for outputting guidance information for travel to a destination, the apparatus having an input unit for inputting a point of departure and a destination, a memory unit for storing destination information and map information, a display unit for outputting said destination information and said map information in response to input information from said input unit, and memory means which, whenever said departure-point information is inputted, rewrites a non-volatile RAM and stores said information, characterized in that when the destination is reached, this destination information is set as departure-point information, and if a return to said departure point is selected, the departure-point information set in said non-volatile RAM is set as destination information.
Claim 3
Dependent Claim
140 words
A vehicular navigation apparatus in which coordinates of a plurality of geographical points are set and guidance information for travel to a destination is outputted at each of the geographical points when the destination is inputted, the apparatus having an input unit for inputting a point of departure and a destination, a memory unit for storing destination information and map information, a display unit for outputting said destination information and said ma p information in response to input information from said input unit, and memory means which, whenever said departure-point information is inputted, rewrites a non-volatile RAM and stores said information, characterized in that when the destination is reached, this destination information is set as departure-point information, and if a return to said departure point is selected, the departure-point information set in said non-volatile RAM is set as destination information.
Claim 4
Dependent Claim
140 words
A vehicular navigation apparatus in which coordinates of a plurality of geographical points are set and guidance information for travel to a destination is outputted at each of the geographical points when the destination is inputted, the apparatus having an input unit for inputting a point of departure and a destination, a memory unit for storing destination information and map information, a display unit for outputting said destination information and said ma p information in response to input information from said input unit, and memory means which, whenever said departure-point information is inputted, rewrites a non-volatile RAM and stores said information, characterized in that when the destination is reached, this destination information is set as departure-point information, and if a return to said departure point is selected, the departure-point information set in said non-volatile RAM is set as destination information.
Claim 5
Dependent Claim
52 words
A vehicular navigation apparatus according to claim 1 or 2, characterized in that a non-volatile RAM area is provided with an area in which departure-point and destination data are written and preserved, and an area for preserving one or plurality items of geographical-point data writable only when there is a specific input.
Claim 6
Dependent Claim
98 words
A vehicular navigation apparatus in which guidance information for travel to a destination is outputted at each intersection upon inputting a point of departure and the destination, said apparatus having an input unit for inputting a point of departure and a destination, a memory unit for storing road data, an intersection name list and a destination list, and a display unit, characterized in that, with regard to two intersections leading to a destination, a predetermined number of names of intersections within a predetermined distance are displayed on said display unit and are rendered selectable as points of departure.
Claim 7
Dependent Claim
98 words
A vehicular navigation apparatus in which guidance information for travel to a destination is outputted at each intersection upon inputting a point of departure and the destination, said apparatus having an input unit for inputting a point of departure and a destination, a memory unit for storing road data, an intersection name list and a destination list, and a display unit, characterized in that, with regard to two intersections leading to a destination, a predetermined number of names of intersections within a predetermined distance are displayed on said display unit and are rendered selectable as points of departure.
Claim 8
Dependent Claim
113 words
A vehicular navigation apparatus in which a plurality of geographical points are set and guidance information for travel to a destination is outputted at each of the geographical points when the destination is inputted, the apparatus having an input unit for inputting characters, a memory unit for storing guidance information and present-location information, and a display unit for outputting said guidance information as well as input information from the input unit, characterized in that said memory unit has an intersection list including character data indicative of region names and landmarks, and the apparatus has present-location input means in which present location is capable of being inputted by inputting characters from said input unit.
Claim 9
Dependent Claim
113 words
A vehicular navigation apparatus in which a plurality of geographical points are set and guidance information for travel to a destination is outputted at each of the geographical points when the destination is inputted, the apparatus having an input unit for inputting characters, a memory unit for storing guidance information and present-location information, and a display unit for outputting said guidance information as well as input information from the input unit, characterized in that said memory unit has an intersection list including character data indicative of region names and landmarks, and the apparatus has present-location input means in which present location is capable of being inputted by inputting characters from said input unit.
Claim 10
Dependent Claim
68 words
A vehicular navigation apparatus according to claim 4 or 5, characterized in that the intersection list comprises a region name list and a landmark list, region names and landmarks are made data of a hierarchical structure, and the apparatus has means for retrieving a landmark after a region is selected, means for sorting region names and landmarks, and data indicating frequency of use of region names and landmarks.
Claim 11
Dependent Claim
26 words
A vehicular navigation apparatus according to claim 6, characterized in that the region name list and landmark list are stored in an IC card or COROM.
Claim 12
Dependent Claim
46 words
A vehicular navigation apparatus according to claim 1, characterized by having having an input unit for inputting position by an infrared touch panel, and means far making a portion of said touch panel at which inputs can be made appear visually distinguishable from other portions thereof.
References Cited (Backward Citations)
No citation records indexed.
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