System and method for designating points on a map using reduced designation information
First Claim
1. A method of designating points in a map, said method comprising the steps of:
- dividing said map into map sections according to a predetermined coordinate system;
assigning unique indicia to said sections and to blocks of each of said sections, and assigning additional unique indicia to respective units of each of said blocks, whereby each unit is identifiable by an intrinsic code comprising a combination of the unique indicia for the section and block in which the unit is located and the unit'"'"'s unique indicia, and wherein said indicia are alphanumeric characters, the indicia of at least one section having fewer significant characters than the indicia of said blocks of the sections; and
designating a point within a selected section using the intrinsic code corresponding to a specific unit.
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Accused Products
Abstract
A map of an entire region is divided into sections of a square of 900", each of which is further divided into blocks of a square of 30", each of which is further divided into units of a square of 1", so that a region on the map can be hierarchically designated. Each section is defined with section codes of three figures; each block is defined with block codes of three figures in accordance with its relative positional relation in the section; and each unit is defined with unit codes of three figures in accordance with its relative positional relation in the block, so that each unit can be completely differentiated with an intrinsic code of nine figures composed of those three kinds of codes. As to the section code composing the intrinsic code corresponding to the predetermined region, moreover, a number of significant digits is reduced by assigning a lower number in the code system, so that the manual operations of inputting the intrinsic code of the predetermined region can be lightened.
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Citations
38 Claims
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1. A method of designating points in a map, said method comprising the steps of:
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dividing said map into map sections according to a predetermined coordinate system; assigning unique indicia to said sections and to blocks of each of said sections, and assigning additional unique indicia to respective units of each of said blocks, whereby each unit is identifiable by an intrinsic code comprising a combination of the unique indicia for the section and block in which the unit is located and the unit'"'"'s unique indicia, and wherein said indicia are alphanumeric characters, the indicia of at least one section having fewer significant characters than the indicia of said blocks of the sections; and designating a point within a selected section using the intrinsic code corresponding to a specific unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of setting a point in a navigation system, said method comprising the steps of:
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receiving an intrinsic code comprising unique alphanumeric indicia representative of said point, said code being selected from a plurality of said intrinsic codes wherein a first part of said indicia in said plurality of intrinsic codes has a number of significant digits which is less than a further part of the indicia in said plurality of intrinsic codes; accessing a portion of a map database based on said received intrinsic code to obtain data corresponding to said point; and using said data to perform navigation. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A system for performing navigation, said system comprising:
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a map database; input means for receiving an intrinsic code comprising unique alphanumeric indicia representative of a point, said code being selected from a plurality of said intrinsic codes wherein a first part of said indicia in said plurality of intrinsic codes has a number of significant digits which is less than a further part of the indicia in said plurality of intrinsic codes; database accessing means for accessing a portion of said map database based on said received intrinsic code to obtain data corresponding to said point; and control means for controlling said navigation system to perform navigation based on said data. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification