Selective rendering of cartographic entities for a navigation system
First Claim
1. A method of selectively displaying cartographic features on a video display of a navigation system, the method comprising the steps of:
- a) determining an operational mode of the navigation system, wherein the navigation system includes first and second operational modes with the first operational mode comprising an on-road mode in which a vehicle position is displayed relative to a road system and with the second operational mode comprising an off-road mode in which the vehicle position is displayed irrelative to a road system;
b) selecting a desired cartographic entity for a cartographic feature based upon the operational mode including selecting a less detailed desired cartographic entity for the cartographic feature in the first operational mode and selecting a more detailed desired cartographic entity than the less detailed desired cartographic entity for the same cartographic feature in the second operational mode; and
c) displaying the selected desired cartographic entity on the video display.
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Accused Products
Abstract
A method of selectively providing cartographic features on a video display of a navigation system for improved rendering is provided. The method includes the steps of determining an operational mode of the navigation system, selecting a desired cartographic entity for a cartographic feature based upon the operational mode, and displaying the desired cartographic entity on the video display. For example, less detailed cartographic entities are selected for display when the navigation system is in an operational mode that requires the video display to be updated frequently ore a mode in which it is desirable to focus the user'"'"'s attention on a different cartographic entity. The less detailed cartographic entity may have a lower intensity than or contrast less with surrounding cartographic entities. In this manner, the user may be provided the desired level of map details with the video display regenerated rapidly.
85 Citations
23 Claims
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1. A method of selectively displaying cartographic features on a video display of a navigation system, the method comprising the steps of:
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a) determining an operational mode of the navigation system, wherein the navigation system includes first and second operational modes with the first operational mode comprising an on-road mode in which a vehicle position is displayed relative to a road system and with the second operational mode comprising an off-road mode in which the vehicle position is displayed irrelative to a road system; b) selecting a desired cartographic entity for a cartographic feature based upon the operational mode including selecting a less detailed desired cartographic entity for the cartographic feature in the first operational mode and selecting a more detailed desired cartographic entity than the less detailed desired cartographic entity for the same cartographic feature in the second operational mode; and c) displaying the selected desired cartographic entity on the video display. - View Dependent Claims (2, 3, 4)
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5. A method of selectively displaying cartographic features on a video display of a navigation system, the method comprising the steps of:
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a) determining an operational mode of the navigation system, wherein the navigation system includes first and second operational modes and the first operational mode is defined by a predetermined vehicle speed; b) selecting a desired cartographic entity for a cartographic feature based upon reaching the predetermined vehicle speed in the first operational mode including selecting a less detailed desired cartographic entity for the cartographic feature at the predetermined vehicle speed in the first operational mode and selecting a more detailed desired cartographic entity than the less detailed desired cartographic entity for the same cartographic feature in the second operational mode; and c) displaying the select desired cartographic entity on the video display.
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6. A method of selectively displaying cartographic features on a video display of a navigation system, the method comprising the steps of:
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a) determining an operational mode of the navigation system, wherein the navigation system includes first and second operational modes and the first operational mode comprises a panning mode in which a displayed area on the video display is shifted relative to a displayed vehicle location independent of a change in vehicle location; b) selecting a desired cartographic entity for a cartographic feature based upon the operational mode including selecting a less detailed desired cartographic entity for the cartographic feature in the first operational mode and selecting a more detailed desired cartographic entity than the less detailed desired cartographic entity for the same cartographic feature in the second operational mode; and c) displaying the selected desired cartographic entity on the video display.
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7. A method of selectively displaying cartographic features on a video display of a navigation system, the method comprising the steps of:
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a) determining an operational mode of the navigation system, wherein the navigation system includes first and second operational modes and a less detailed desired cartographic entity is defined by a perimeter with cross-hatching disposed within the perimeter and a more detailed desired cartographic entity is defined by a perimeter with solid shading disposed within the perimeter; b) selecting a desired cartographic entity for a cartographic feature based upon the operational mode including selecting a less detailed desired cartographic entity for the cartographic feature in the first operational mode and selecting a more detailed desired cartographic entity than the less detailed desired cartographic entity for the same cartographic feature in the second operational mode; and c) displaying the selected desired cartographic entity on the video display.
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8. A method of selectively displaying cartographic features on a video display of a navigation system, the method comprising the steps of:
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a) determining an operational mode of the navigation system; b) selecting a first cartographic entity for a first cartographic feature based upon the operational mode, wherein the first cartographic entity is a vehicle route having a first intensity, and selecting a second intensity for a second desired cartographic entity for a second cartographic feature which is different than the first intensity; and c) simultaneously displaying the first and second desired cartographic entities on the video display; wherein the operation mode comprises on-road guidance mode in which a vehicle position is displayed relative to a road system. - View Dependent Claims (9, 10, 11)
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12. An apparatus for a navigation system configured to selectively display cartographic features, the apparatus comprising:
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at least one position determining device for providing a vehicle location signal; a database having a map with cartographic features and cartographic entities configured to represent said cartographic features; a processor interconnected to said at least one positioning device and said database the processor operable to determine the location of the vehicle relative to said map; a video display connected to said processor operable to display an area of said map; a plurality of operational modes each mode operable to display said map area, wherein said processor is configured to determine an operational mode from said plurality of said operational modes and to select a desired cartographic entity for a cartographic feature based upon said operational mode, said processor configured to display said selected desired cartographic entity on said video display, wherein said plurality of operational modes includes first and second operational modes, and said processor is configured to select a less detailed desired cartographic entity for said cartographic feature in said first operational mode and to select a more detailed desired cartographic entity than said less detailed desired cartographic entity for said same cartographic feature in said second operational mode, and wherein said first operational mode comprises an on-road mode in which a vehicle position is displayed relative to a road system and said second operational mode comprises an off-road mode in which said vehicle position is displayed irrelative to a road system. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method of displaying a cartographic feature on a video display of a navigation system, the method comprising the steps of:
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a) determining an operational mode of the navigation system; b) selecting a first desired intensity for a first desired cartographic entity defining a first cartographic entity based upon the operational mode and selecting a second desired intensity for a second desired cartographic entity based upon the operational mode; and c) simultaneously displaying the first and second desired cartographic entity on the video display at the desired intensities; wherein the operational mode comprises on-road guidance mode in which a vehicle position is displayed relative to a road system. - View Dependent Claims (20, 21, 22, 23)
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Specification