Navigation system
First Claim
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1. A navigation system for a vehicle comprising:
- a first external storage means for storing first guidance data including road and intersection data;
a second external storage means for storing second guidance data; and
second guidance data being linked to said first guidance data and including more detailed road and intersection data associated with a smaller geographic area when compared to said first guidance data;
output means for outputting guidance information; and
CPU means for receiving said first and second guidance data from said first and second external storage means, supplementing said first guidance data by said second guidance data, and outputting said guidance information based on said supplemented guidance data via said output means.
1 Assignment
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Accused Products
Abstract
A first external storage device which may be a CD stores data representing standard map of a particular area and that required for guidance, and a second external storage device 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 a 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.
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Citations
17 Claims
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1. A navigation system for a vehicle comprising:
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a first external storage means for storing first guidance data including road and intersection data; a second external storage means for storing second guidance data; and
second guidance data being linked to said first guidance data and including more detailed road and intersection data associated with a smaller geographic area when compared to said first guidance data;output means for outputting guidance information; and CPU means for receiving said first and second guidance data from said first and second external storage means, supplementing said first guidance data by said second guidance data, and outputting said guidance information based on said supplemented guidance data via said output means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A navigation system for a vehicle comprising:
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present position means for determining a present position of said vehicle; first external storage means for storing first guidance data including road and intersection data; a second external storage means for storing second guidance data;
said second guidance data being linked to said first guidance data and including more detailed road and intersection data association with a smaller geographic area when compared to said first guidance data;output means for outputting guidance information; and CPU means for receiving said first and second guidance data from said first and second external storage means, supplementing said first guidance data by said second guidance data, and outputting said guidance information together with said present position via said output means based on said supplemented guidance data. - View Dependent Claims (11, 12, 13, 14)
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15. A navigation system for a vehicle comprising:
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input means for inputting a starting point and destination; a present position means for determining a present position of said vehicle; a first external storage means for storing first guidance data including road and intersection data; a second external storage means for storing second guidance data;
said second guidance data being linked to said first guidance data and including more detailed road and intersection data associated with a smaller geographic area when compared to said guidance data;output means for outputting guidance information, including a display means for displaying visual information; and CPU means for receiving said first and second guidance data from said first and second external storage means, setting a guide route based on said starting point and said destination including supplementing said first guidance data by said second guidance data, and outputting said guide route as said guidance information together with said present position data via said output means.
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16. A navigation system for a vehicle comprising:
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input means for inputting a starting point and destination; a first external storage means for storing first guidance data including road and intersection data; a second external storage means for storing second guidance data;
said second guidance data being linked to said first guidance data and including more detailed road and intersection data association with a smaller geographic area when compared to said first guidance data;output means for outputting guidance information; and CPU means for receiving said first and second guidance data from said first and second external storage means, setting coordinates of a plurality of points from said starting point to said destination including supplementing said first guidance data by said second guidance data, and outputting said guidance information based on said set coordinates via said output means at each of said points up to said destination.
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17. A navigation system for a vehicle comprising:
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an external storage means for storing guidance data including road and intersection data; an internal storage means for storing second guidance data;
said second guidance data being linked to said first guidance data and including more detailed road and intersection data associated with a smaller geographic area when compared to said first guidance data;output means for outputting guidance information; and CPU means for receiving said first and second guidance data from said external and internal storage means, supplementing said first guidance data by said second guidance data, and outputting said guidance information based on said supplemented guidance data via said output means.
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Specification