Position recognition system and position-coordinate converting device
First Claim
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1. A position-coordinate converting device comprising:
- map information storage means for storing a plurality of areas, each area having a predetermined standard point in latitude/longitude format and a paper atlas page number corresponding thereto;
position detecting means including a receiver for a Global Positioning System (G.P.S.) for detecting position and outputting a detected position in latitude/longitude format;
corresponding means, coupled to said position detecting means, for corresponding said detected position to one of said plurality of areas stored in said map information storage means and retrieving its corresponding paper atlas page number by comparing said detected position with one or more of said predetermined standard points;
coordinates operation means, coupled to said position detecting means, said corresponding means and said map information storage means, for computing a location within said one area by converting said detected position into lateral and longitudinal designations corresponding to predetermined axis markings on said paper atlas which are within said one area; and
indication means, coupled to said coordinates operation means, for indicating said corresponding paper atlas page number and said lateral and longitudinal designations within said one area.
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Abstract
A position recognition system is disclosed which includes a map divided into a plurality of areas, and area information corresponding to each area. A position-coordinate converting device includes a position detector for detecting a position as coordinates corresponding to a predetermined standard point. A map information memory card stores the area information of the map and coordinates corresponding to the predetermined standard point as map information. A CPU operates on the area information based on the detected results of the position detector and the map information stored in the map information memory card. An indicator indicates the operational results of the CPU.
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Citations
14 Claims
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1. A position-coordinate converting device comprising:
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map information storage means for storing a plurality of areas, each area having a predetermined standard point in latitude/longitude format and a paper atlas page number corresponding thereto; position detecting means including a receiver for a Global Positioning System (G.P.S.) for detecting position and outputting a detected position in latitude/longitude format; corresponding means, coupled to said position detecting means, for corresponding said detected position to one of said plurality of areas stored in said map information storage means and retrieving its corresponding paper atlas page number by comparing said detected position with one or more of said predetermined standard points; coordinates operation means, coupled to said position detecting means, said corresponding means and said map information storage means, for computing a location within said one area by converting said detected position into lateral and longitudinal designations corresponding to predetermined axis markings on said paper atlas which are within said one area; and indication means, coupled to said coordinates operation means, for indicating said corresponding paper atlas page number and said lateral and longitudinal designations within said one area.
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2. A position determining system for determining a position comprising:
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a Global Positioning System (G.P.S.) receiver for receiving a radio signal from a plurality of satellites and outputting in response thereto a current position as latitude and longitude coordinates; memory means for storing a plurality of page numbers and map coordinates as latitudes and longitudes, each of said map coordinates corresponding to one of said page numbers, each said page number corresponding to a page of a paper map; computer means, coupled to said G.P.S. receiver and to said memory means, for receiving said current position, determining whether one of said plurality of map coordinates corresponds to said current position, and outputting in response thereto a determined page number, and for calculating a sub-area within a page of said paper map by computing lateral and longitudinal designators based on a difference between said detected position and said one of said plurality of map coordinates, and indication means, coupled to said computer means, for indicating said determined page number and said calculated sub-area. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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9. A position-coordinate converting device, comprising:
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a G.P.S. receiver for receiving a satellite signal and outputting therefrom position coordinates in latitude/longitude format; a position display for displaying a current position in a first display format comprising an atlas page number and an area indicator associated with said atlas page number, and a second display format comprising latitude/longitude coordinates; a display controller, coupled to said position display, for allowing a user to select between said first display format and said second display format; a memory comprising a plurality of areas, each area having a standard point represented in latitude/longitude coordinates and an atlas page number corresponding to a paper atlas page on which the area is depicted; and converting means, coupled to said G.P.S. receiver, said memory, said position display, and to said display controller, for locating in said memory one of said plurality of areas corresponding to said position coordinates received from said G.P.S. receiver, retrieving the atlas page number corresponding to said one located area, computing an area indicator within said located area, characterized by a lateral axis designator and a longitudinal axis designator, by calculating a difference between said received position coordinates and the standard point for said one located area and, responsive to said display controller, displaying either said page number and said area indicator or said received position coordinates on said position display. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification