Navigation apparatus for vehicles
First Claim
Patent Images
1. A navigation system having display means for displaying road map information, comprising:
- current position estimation means for estimating an actual position of the vehicle on a displayed map;
designating means operated by a drive for designating a destination;
storage means for previously storing a large amount of road map information which consists of image data to be displayed and logical data on which logical determination can be made by determination means, said road map information being static;
reading means for searching for road map information related to roads between the estimated current position of the vehicle and the designated destination location, and for reading out that information from said storage means;
determination means for determining the relation degree of the read out road map information to at least one of the estimated actual position and the designated destination on the basis of the individual logical data contained in the read out road map information; and
display control means for restricting display of the road map information which is determined as less related to the destination.
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Abstract
A navigation apparatus for vehicles according to the present invention has a display device for displaying road information. The navigation system is designed to selectively display the road information which is close to the current position of the vehicle and/or the demands of the driver from a large amount of road information (each of which consists of image data to be displayed and logical data on which logical determination can be made).
291 Citations
15 Claims
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1. A navigation system having display means for displaying road map information, comprising:
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current position estimation means for estimating an actual position of the vehicle on a displayed map; designating means operated by a drive for designating a destination; storage means for previously storing a large amount of road map information which consists of image data to be displayed and logical data on which logical determination can be made by determination means, said road map information being static; reading means for searching for road map information related to roads between the estimated current position of the vehicle and the designated destination location, and for reading out that information from said storage means; determination means for determining the relation degree of the read out road map information to at least one of the estimated actual position and the designated destination on the basis of the individual logical data contained in the read out road map information; and display control means for restricting display of the road map information which is determined as less related to the destination. - View Dependent Claims (5, 6, 7, 8)
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2. A navigation system having display means for displaying road map information, comprising:
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current position estimation means for estimating an actual position of the vehicle on a displayed map; designating means operated by a driver for designating a destination; route determination means for determining road routes along which the vehicle will travel to get to the destination from the estimated actual position; storage means for previously storing a large amount of road map information which comprises image data to be displayed and logical data on which a logical determination can be made, said road map information being static; reading means for selectively searching for road map information closely related to the routes determined by the route determination means on the basis of the logical data and for reading to only that information from said storage means; and display control means coupled to said reading means for displaying the selectively read out road map information whereby only information closely related to the routes determined by the route determination means is displayed. - View Dependent Claims (3, 4)
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9. A navigation system having display means for displaying road map information and traffic information which is externally received from outside, said display made in overlapped manner of the road and traffic information, said system comprising:
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reception means for receiving traffic information from outside of the vehicle, said traffic information including characteristic data representing a characteristic of said traffic information and type data representing a type of the traffic information; current position estimation means for estimating an actual position of the vehicle; designating means operated by a driver for alterably designating a characteristic range for at least one type of data outside which range the driver wants to mask received traffic information; storage means for previously storing a large amount of road map information including map image data to be displayed, and graphic images corresponding to types of traffic information; reading means for reading road map information on roads in the vicinity of the estimated actual position; and masking means for determining whether the received characteristic data is within the designated characteristic range for the type of data received and restricting display of the read out graphic images of the received traffic information such that data outside of the designated characteristic range for the type of data received is not displayed. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification