EP0330787A2
Expired / Lapsed
EP
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Navigation system
Assignee: Aisin AW Co Ltd
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Filing: 1988-12-30
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Granted: —
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Expires: 2008-12-30
Abstract
Abstract In a navigation system, a first external storage device (16) which may be a CD stores data representing a standard map of a particular area and that required for guidance, and a second external storage device (17) which may be an IC card stores individual data which cannot be complemented by said data representing the standard map and said guidance data. Since the data is stored in both CD and IC card, the number of data can be reduced. This makes the operation simpler and enables data that meets the demand of a user to be selectively supplied to the user. In consequence, guided navigation is made possible from any starting point to a destination, and data updating can be made relatively easy.
Inventors
- 👤 Shuzo Moroto
- 👤 Masao Kawai
- 👤 Shoji Yokoyama
- 👤 Koji Kobayashi
- 👤 Koji Sumiya
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 20:00
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/09; G08G1/0962; G08G1/0968; G08G1/0969; G01; G01C; G01C21/00; G01C21/38; G01C21/3863; G01C21/387; G01C21/3878
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
91 words
A navigation system comprising: a display device, an external storage unit for storing guidance data, and a CPU for operating the data stored in said external storage unit in accordance with a navigation program and outputting the result to said display device, said external storage unit including a first external storage device for storing standard guidance data and a second external storage device for storing additional data of said standard guidance data, and said CPU being capable of selectively operating the data stored in said first and second external storage devices.
Claim 2
Dependent Claim
91 words
A navigation system comprising: a display device, an external storage unit for storing guidance data, and a CPU for operating the data stored in said external storage unit in accordance with a navigation program and outputting the result to said display device, said external storage unit including a first external storage device for storing standard guidance data and a second external storage device for storing additional data of said standard guidance data, and said CPU being capable of selectively operating the data stored in said first and second external storage devices.
Claim 3
Dependent Claim
30 words
A navigation system according to claim 1, wherein said second external storage device comprises a floppy disk, an optical disk, a magnetic tape, an IC card or an optical card.
Claim 4
Dependent Claim
30 words
A navigation system according to claim 1, including a present position checking unit, said navigation program being designed to output map data and a present position to said display device.
Claim 5
Dependent Claim
52 words
A navigation system according to claim 1, including a present position checking unit and a starting point/destination inputting device, said navigation program being designed to output to said display device a route set on the basis of a starting point and a destination which are input, map data and a present position.
Claim 6
Dependent Claim
41 words
A navigation system according to claim 1, including a starting point/destination inputting device, said navigation program being designed to set coordinates of a plurality of points and to output guidance data required at each of said points to reach a destination.
Claim 7
Dependent Claim
44 words
A navigation system according to either of claims 1 to 5, wherein said CPU selectively operates the data stored in said first and second external storage devices using a comparison list of said two types of data which is prepared by said CPU beforehand.
Claim 8
Dependent Claim
45 words
A navigation system according to either of claims 1 to 5, wherein said second external storage device stores comparison data of said two types of data, which is used when said CPU selectively operates the data stored in said first and second external storage devices.
Claim 9
Dependent Claim
49 words
A navigation system according to either of claims 1 to 5, wherein said second external storage device stores a table for designating a modified region of said two types of data, which is used when said CPU selectively operates the data in said first and second external storage devices.
Claim 10
Dependent Claim
22 words
A navigation system according to any of claims 3, 4 and 6, wherein said present position checking unit comprises a GPS receiver.
Claim 11
Dependent Claim
22 words
A navigation system according to any of claims 3, 4 and 6, wherein said present position checking unit comprises a beacon receiver.
Claim 12
Dependent Claim
26 words
A navigation system according to any of claims 3, 4 and 6, wherein said present position checking unit comprises a geomagnetic sensor and a distance sensor.
Claim 13
Dependent Claim
26 words
A navigation system according to any of claims 3, 4 and 6, wherein said present position checking unit comprises a distance sensor and a steering sensor.
Claim 14
Dependent Claim
85 words
A navigation system comprising: a display device, a storage unit for storing guidance data, and a CPU for operating the data stored in said storage unit in accordance with a navigation program and outputting the result to said display device, said storage unit including an internal storage device for storing standard guidance data and an external storage device for storing additional data of said standard guidance data, and said CPU being capable of selectively operating the data stored in said internal and external storage devices.
Claim 15
Dependent Claim
85 words
A navigation system comprising: a display device, a storage unit for storing guidance data, and a CPU for operating the data stored in said storage unit in accordance with a navigation program and outputting the result to said display device, said storage unit including an internal storage device for storing standard guidance data and an external storage device for storing additional data of said standard guidance data, and said CPU being capable of selectively operating the data stored in said internal and external storage devices.
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