Navigation device and method for displaying facility mark using the same
First Claim
1. A navigation device comprising:
- a map drawing section for drawing a map image in accordance with a predetermined scaling factor;
a facility mark drawing section for drawing an image of a facility mark corresponding to a specific facility in one of a plurality of different display patterns, wherein said one display pattern is determined in response to said scaling factor; and
a display processor for displaying the image of said facility mark drawn by said facility mark drawing section, superimposed on said map image drawn by said map drawing section.
1 Assignment
0 Petitions
Accused Products
Abstract
A navigation device is provided for improving the visibility of a map image including facility information. A map drawing section 14 generates map drawing data for the display of the map image by applying a predetermined scaling factor, and stores the data in the VRAM 16. A facility mark drawing section 22 extracts a predetermined facility from the drawing range of the map image, draws a facility mark corresponding to the facility with its display pattern changed in response to the scaling factor of the map image, and stores the drawing data in the VRAM 16. An image superimposing section 36 merges the drawing data stored in the VRAM 16 and the drawing data provided by an auxiliary image drawing section 34 and the like, to provide the merged data to a display device 6. Based on the drawing data provided by the image superimposing section 36, the map image with the facility marks superimposed thereon is displayed on the screen of the display device 6.
44 Citations
20 Claims
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1. A navigation device comprising:
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a map drawing section for drawing a map image in accordance with a predetermined scaling factor;
a facility mark drawing section for drawing an image of a facility mark corresponding to a specific facility in one of a plurality of different display patterns, wherein said one display pattern is determined in response to said scaling factor; and
a display processor for displaying the image of said facility mark drawn by said facility mark drawing section, superimposed on said map image drawn by said map drawing section.
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2. A navigation device comprising:
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a map drawing section for drawing a map image in accordance with a predetermined scaling factor;
a facility mark drawing section for drawing an image of a facility mark corresponding to a specific facility in a display pattern in response to said scaling factor; and
a display processor for displaying the image of said facility mark drawn by said facility mark drawing section, superimposed on said map image drawn by said map drawing section, wherein, when the value of the scaling factor is a first value or less, the image of said facility mark is a dot image drawn by said facility mark drawing section. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A navigation device comprising:
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a map drawing section for drawing a map image in accordance with a predetermined scaling factor;
a facility mark drawing section for drawing an image of a facility mark corresponding to a specific facility in a display pattern in response to said scaling factor; and
a display processor for displaying the image of said facility mark drawn by said facility mark drawing section, superimposed on said map image drawn by said map drawing section, wherein, when the value of the scaling factor is a second value or less, and a plurality of said facility marks are positioned close to one another on the display screen, said facility mark drawing section draws a collective-facility-mark indicating a genre to which the plurality of said facility marks belong. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A navigation device comprising:
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a map drawing section for drawing a map image in accordance with a predetermined scaling factor;
a facility mark drawing section for drawing an image of a facility mark corresponding to a specific facility in a display pattern in response to said scaling factor; and
a display processor for displaying the image of said facility mark drawn by said facility mark drawing section, superimposed on said map image drawn by said map drawing section, wherein, when the value of the scaling factor is greater than a third value and said facility is related to specific building, said map drawing section draws an outline of said specific building, and said facility mark drawing section draws the image of the facility mark relating to the building within said outline of the building.
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20. A method for displaying facility marks indicating locations of various facilities on a map image, using a navigation device that superimposes the facility marks on the map image, comprising:
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drawing the map image in accordance with a predetermined scaling factor;
drawing an image of the facility mark corresponding to the specific facility in one of a plurality of different display patterns, wherein said one display pattern is determined in response to said scaling factor; and
displaying the image of said facility mark superimposed on said map image.
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Specification