Map displaying method
First Claim
1. A map display method wherein, when displaying a map of a desired area on a display screen of a liquid crystal display or CRT, the current point and the target or objective point, are displayed such that a display area for the current point is defined by a circular region having a predetermined radius and a fan-shaped region which spreads at a predetermined central angle from the current point toward the target or objective point and has substantially the form of a fan or an inverted-triangle, map information included in said display area of the current point being displayed on said display screen, and a display area for the target or objective point is defined by a circular region having a predetermined radius and an inverted-fan-shaped region which spreads at a predetermined central angle from the target or objective point toward the current point and has substantially the form of an inverted-fan or a triangle, map information included in said display area of the target or objective point being also displayed on said display screen.
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Abstract
A display method for displaying one or more of the current point, the target point, or objective point on a display screen, the method suppressing a display of useless background and offering sufficient background for visual and geographical recognition of the displayed point. When displaying a map of an area about a display point, the displayed area is defined by a circular region having a predetermined radius and a fan-shaped region which spreads at a predetermined angle from a path to be followed by the current point.
50 Citations
19 Claims
- 1. A map display method wherein, when displaying a map of a desired area on a display screen of a liquid crystal display or CRT, the current point and the target or objective point, are displayed such that a display area for the current point is defined by a circular region having a predetermined radius and a fan-shaped region which spreads at a predetermined central angle from the current point toward the target or objective point and has substantially the form of a fan or an inverted-triangle, map information included in said display area of the current point being displayed on said display screen, and a display area for the target or objective point is defined by a circular region having a predetermined radius and an inverted-fan-shaped region which spreads at a predetermined central angle from the target or objective point toward the current point and has substantially the form of an inverted-fan or a triangle, map information included in said display area of the target or objective point being also displayed on said display screen.
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13. A method of displaying a map on a display screen comprising the steps of:
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(a) identifying a route between a current point and an objective point on a map to be displayed; (b) displaying on the display screen a first area of the map that includes the current point, the displayed first area being a circular region of predetermined radius and a fan shaped region that spreads from the circular region at a predetermined angle from the identified route along which the current point is expected to move towards the objective point; and (c) displaying on the display screen a second area of the map that includes the objective point, the displayed second area being a circular region of predetermined radius and an inverted fan shaped region that spreads from the second area circular region at a predetermined angle from the identified route along which the current point is expected to move towards the objective point. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method of displaying a map on a display screen comprising the steps of:
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(a) identifying a route between a current point and an objective point on a map to be displayed; and (b) displaying on the display screen a first area of the map that includes the current point and the objective point, the displayed first area being a circular region of predetermined radius and an inverted fan shaped region that spreads from the circular region at a predetermined angle from the identified route along which the current point is expected to move towards the objective point, the objective point being displayed in the circular region and the current point being displayed in the inverted fan shaped region.
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Specification