JP2001005834A - Positional information transforming method and storage medium storing program of positional information transformation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of digits of positional information and to use it in respective fields by obtaining a position on a large tile covering the whole map through the use of a first mesh number obtained by making a map into a mesh and vertical and horizontal coordinates at the time of making the first mesh into a mesh by a second mesh. SOLUTION: After map data are transferred to a register-desiring person, a new geo code generation part 7 transforms an indication point on a map to a latitude and longitude being map coordinates to deliver them to a belonging tile calculation part 10. Then an integrated code obtained by integrating the tile coordinates of first tile of 10 km cutting width deciding the range of 'degree, minute' in a large tile covering the whole land of Japan obtained by a belonging tile calculation part 10 and the coordinates of the tile number of the first tile and second tiles of 2.5 m cutting width in the first tile deciding the range of '××sec' is generated to generate a new integral code obtained by integrating this integrated code, in inputted system identification code and a registering person identifying code.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position information conversion method, and more particularly to a position information conversion method capable of converting latitude and longitude (degrees, minutes, and seconds) into a predetermined number of character strings or from character strings to the original latitude and longitude. About.

[0002]

2. Description of the Related Art Map attribute information (position, building name,
Geographic information system (GIS: geographical) for analyzing road names, addresses, etc. using a computer
The information system includes a city policy system, fire and emergency rescue and disaster prevention systems such as police, traffic control systems, land information management systems for managing forests and farmland, customer management systems for dealers, car navigation systems, and the like. is there.

[0003] Such a system has a map database in which roads, railways, rivers, features, and the like are stored as graphic information, and an attribute database in which attribute data attached to them are stored. Is displayed on the screen, and when a point on the map is designated,
Generally, attribute information corresponding to that point is retrieved from an attribute database and displayed on a screen.

For example, in a car navigation system using GPS (global positioning system),
The map is meshed at predetermined intervals, and points,
Geocode representing the region (geographic co
de: a place name confidential code (a sequence of numbers) is assigned, the geocode is stored in a database in correspondence with the latitude and longitude, and this system uses this geocode as a tag of a destination.

[0005] For example, see Japanese Patent Application Laid-Open No. 10-307868.
In the official gazette, each mesh has an 8-digit geocode (for example, “53340324”) specified by the Internal Affairs Agency and the Japan Statistical Association.
2 ”), and the area, commercial power, suction population, sales share, etc. are assigned to this geocode.

In the above-described geocode, a sequence of numbers assigned to a map mesh is used as a geocode, but latitude (xx degrees, xx minutes, xx seconds) and longitude (xx degrees, xx degrees) are used.
Minutes, xx seconds) may be collectively referred to as a geocode. That is, the geocode is composed of a sequence of several digits.

[0007]

However, the geocoding method for assigning a sequence of numbers to a map mesh is as follows.
Based on the system prescribed for each government, association, and industry,
Since a predetermined numerical sequence is assigned and the allocated numerical sequence is used as a geocode and used, a system (urban policy system, fire and police emergency rescue and disaster prevention) created by the above-mentioned governments, associations, and non-industry regulations is used. Systems, traffic control systems, land information management systems for the purpose of managing forests, farmland, etc., customer management systems for retailers, etc.), car navigation systems, etc. Since they are different, the matching property of the data is low.

In other words, in a geographic information system, a car navigation system, or the like, which is created according to a rule other than the above-mentioned government offices, associations, and industries, even if an attempt is made to use a geocode based on the rule described above, the matching of data with each other is low. There has been a problem that it cannot be easily used in common. That is, it is not a prescribed geocode that is considered so as to be easily used across multiple fields.

Further, even if the mutual compatibility of the data is obtained by some means, if it is necessary to change the geocode, the data is complicatedly and hierarchically corresponded to the geocode. Therefore, there is a problem that the change (maintenance) cannot be easily performed.

[0010] Specifically, in order to obtain the latitude and longitude corresponding to the geocode, a system prescribed for each government office, association, or industry must be deciphered, and a complicated procedure based on this system must be performed. The latitude and longitude cannot be obtained.

For this reason, a great deal of cost is required for changing the geocode and the attribute information for the geocode.

Further, the geocode system in which a sequence of numbers is assigned to a map mesh is a sequence of numbers, so that when trying to convey the position in detail, the number of digits increases, which is difficult to convey and difficult to remember. .

On the other hand, even in a system in which latitude (xx degrees, xx minutes, xx seconds) and longitude (xx degrees, xx minutes, xx seconds) are simply geocodes, basically, a numerical value There is a problem that when trying to convey the position in detail, the number of digits increases and it is difficult to convey and it is difficult to remember.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a position information conversion method which has a small number of digits of position information and can be easily used in various fields.

[0015]

According to the present invention, when a position on a map consisting of latitude and longitude is input, the position is paired with the map and the map is meshed at regular intervals.
After mapping to the plane to which the mesh number is assigned,
The position on the large tile that covers the entire map is represented by the number of the first mesh and the first mesh when the first mesh is meshed with the second mesh at a predetermined interval (predetermined interval≪constant interval). This is a position information conversion method obtained by using the vertical and horizontal coordinates of the second mesh.

In the step (a), the number of the first mesh in the large tile corresponding to the input position is read, and this number is used when the total number of the first mesh in the large tile is represented by a binary number. Indicated by the first bit number.

Next, the step (b) is performed by adding the second mesh to the first mesh.
Are defined by the second number of bits when the total number of the second meshes in the first mesh is expressed by a binary number, respectively.

Next, in step (c), the first mesh number indicated by the first bit number and the vertical and horizontal coordinates of the second mesh indicated by the second bit number are integrated. , This is the integrated code.

Next, in step (d), the integrated code is
A code having a first predetermined number of bits whose number of bits is a multiple of the number of bits of the character code is integrated, and this is set as a new integrated code.

In step (e), the new integrated code is read, the new integrated code is divided by the number of bits of the character code, and the characters corresponding to the divided binary code sequence are sequentially read from the character table. The characters extracted and extracted in the step (f) are collected by the number of divisions in the step (e), and the collected character strings are notified as a new geocode.

For example, the step size of the first mesh is 10 k
m, the step size of the second mesh is 2.5 m, the character code is 6 bits, and the total number of meshes of 10 km is 8
000, the first number of bits in the step (a) is represented by 13 bits, and the total number of second meshes in the first mesh in the step (b) is represented by a second number in a binary number. Are represented by 12 bits each, and the integrated code in the step (c) is represented by 37 bits.

In the step (d), if the first predetermined number of bits is a combination of the identification code of the input person, the system identification code, and the variant identification code, the total bits The number is 11 bits because it is a multiple of 6 when the 37-bit integrated code and the total number of bits are added. That is,
In the step (d), a new 48-bit integrated code is generated by adding the integrated code (37 bits) and the first predetermined number of bits (11 bits).

Then, in step (e), the integrated code is
The image data is divided into 6 bits, characters corresponding to the code sequence for each 6 bits are extracted, and these characters are collected and notified as a new geocode in the step (f).

Further, (m). (N) following the input of a new geocode consisting of several characters, sequentially separating the new geocode in character units and sequentially converting the characters into a binary code string having a corresponding number of bits in a character table; .
(M) integrating the binary code string converted in the process,
(K) obtaining a new integrated code rearranged in the step, and removing the variant identification code; When the variant identification code is removed, read the rearrangement procedure corresponding to the variant identification code, and reverse the procedure to restore the original integrated code consisting of the input user's identification code, system identification code, and integrated code. Step (q).
The restored original integrated code is separated from the lower order in the order of the first bit number, the second bit number, the third bit number, the fourth bit number, and the second bit number in the first mesh is separated. Obtaining the vertical and horizontal coordinates of the mesh and the tile number;
(R). The coordinates of the first mesh of the large tile corresponding to the tile number are obtained, the coordinates are combined with the vertical and horizontal coordinates of the second mesh in the first mesh, and this is inversely mapped to the latitude and longitude of the map and input. And obtaining a latitude and longitude corresponding to the new geocode.

That is, by the steps (m) to (r),
When a new geocode consisting of eight characters is input, the latitude and longitude on the map are restored from the new geocode.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic configuration diagram of a geographic information generation system using a new geocode according to the present embodiment.

A geographic information generation system 1 shown in FIG. 1 includes a personal computer 3 (3a, 3b,...) Of a registration applicant on a network 2 (Internet, LAN, etc.) and a geographic information generation server for generating or decoding a new geocode. 4 is connected.

The personal computer 3 of the registration applicant accesses the geographic information generation server 4 to display a menu screen of the geographic information system. This menu includes a registrant attribute application screen, a new geocode reference screen, a new geocode registration screen, a map control screen, and the like.

For example, using the map control screen, the registrant operates the registrant's personal computer 3 to send a map of Japan, a map of a prefecture, a map of a region, And display them on the screen. For example, a 1/2500 map is displayed. Then, the new geocode registration screen is displayed together with the map screen,
A desired position on this map is designated by a cursor (hereinafter referred to as designated point Ai), and coordinates on the map are transmitted.

Further, the registration screen is opened, a system identification code (sightseeing, road, transportation, etc.) and a registrant identification code are input and transferred to the geographic information generation server 4.

The geographic information server 4 also includes a new geocode decoding / coding command unit 6, a new geocode generation unit 7, a new geocode decoding unit 8, a kana character table 9, a belonging tile calculation unit 10, And a coordinate conversion unit 11.

The geographic information server 4 stores the map data (artificial satellite image, aerial photograph (1/40000,
1/20000, 1/10000), map (1/400)
00, 1/20000, 1/10000), 1/250
Function to transfer 0) at the request of the registrant (not shown)
It has.

The decoding / coding command section 6 activates the new geocode generating section 7 or the new geocode decoding section 8 in accordance with an instruction (refer to new geocode registration or new geocode position) from a registration applicant.

After the map data is transferred to the registration applicant, the new geocode generation unit 7 determines the designated point Ai on the map by using the latitude (xx degrees, xx minutes, ×
..) And longitude (xx degrees, xx minutes, xx seconds,...) (At least 14 digits in decimal) and passed to the assigned tile calculation unit 10. At this time, the latitude and longitude are sometimes converted to a new coordinate system (LTRF system) corresponding to the year 2000.

The primary tile (also referred to as a first mesh) having a width of 10 km and determining the range of "degree, minute" in the large tile Bi covering the whole of Japan obtained by the belonging tile calculation unit 10 described later. Coordinates (I, J)
And the tile number of this primary tile and the coordinates (d, e) of a secondary tile (also referred to as a second mesh) having a step width of 2.5 m within the primary tile for which the range of “xx seconds” has been determined. An integrated code is generated, and a new integrated code is generated by integrating the integrated code with the input system identification code and registrant identification code.

At this time, a variant identification code is added so that the number of bits of the new integrated code is a multiple of six. Then, the new kana code is divided into 6 bits from the lower end, and the kana characters corresponding to the data of each 6 bits are sequentially transmitted from the kana character table 9 so that the eight kana characters (new Geocode or registration code).

That is, a new integrated code (consisting of a latitude / longitude, a registrant identification code, a system identification code, and a variant identification code) including position information indicated by at least a 14-bit number is composed of eight “kana” characters. Has been converted to.

When the new geocode decoding unit 8 inputs a registration code which is an eight-digit “kana” character, it reads a binary code (6) corresponding to each “kana” from the kana character file 9.
After sequentially assigning these 6-bit binary codes, the variant identification code is taken out, restored based on the procedure of rearranging the variant identification code, and the latitude (xx) is converted by the coordinate conversion unit 11. Degree, xx min, xx
Seconds,), longitude (xx degrees, xx minutes, xx seconds,).

The belonging tile calculation unit 10 determines the designated point A
When the latitude (xx degrees, xx minutes, xx seconds) and longitude (xx degrees, xx minutes, xx seconds) corresponding to i are input, as shown in FIG. After converting the latitude and longitude into radians, as shown in FIG. 2B, the geographic coordinate system (X, Y) is moved to a central point on the land portion of the Japanese land, and the result is shown in FIG. ), The origin (xo ′,
The x coordinate (longitude) in the coordinate system (x, y) having (yo ′) is compressed according to the latitude axis to make the distance equal. this is,
This is because the interval between longitudes becomes narrower as the latitude increases.

Then, as shown in FIG. 2 (d), the coordinate axes (x ', y') obtained by rotating the coordinate axes (x, y) clockwise by 30 ° 45'18 ″ are obtained, and the whole of Japan is obtained. The tile coordinates (I, J) of the primary tile in units of 10 km that determine the range of latitude and longitude in the large rectangular tile Bi having a rectangular shape to be covered are obtained.

That is, the large tile Bi is replaced with the large tile Bi shown in FIG.
As shown in FIG. 3, a Japanese map rotated at a rotation angle a (FIG. 3)
In FIG. 3, when a perpendicular line is drawn from the coordinate axes (x ′, y ′) of Hokkaido, Honshu, Shikoku, and Kyushu, the point is the highest point on the y ′ axis (Cape Shiretoko in FIG. 3), and y ′ The lowest point on the axis (Cape Sata in Fig. 3)
The leftmost point on the x 'axis (Tsushima in FIG. 3)
And a large tile Bi (about 840 km × 1920) surrounding the rightmost point on the x ′ axis (inubosaki in FIG. 3).
km) is divided by the primary tile of 10 km (corresponding to 6 minutes) shown in FIG. 3B (total number of tiles is 16128). And minutes ”.

When the coordinates (I, J) of the primary tile mi in the large tile Bi are determined, the belonging tile calculation unit 10 removes the primary tile mi corresponding to the sea from the large tile Bi to land (in the map of the database). After assigning the tile number ti to the primary tile mi corresponding to the land number fi), read the details of the latitude and longitude (in units of 0.1 seconds),
The determined fine position in the primary tile mi is obtained as the coordinates (d, e) of the primary tile mi.

That is, the primary tile mi is represented on the map of Japan in units of 2.5 m (corresponding to about 0.1 second) on the horizontal and vertical axes (d, e).
Are divided into secondary tiles ki, coordinates (d, d) of the secondary tiles ki corresponding to “about 0.1 second” of latitude and longitude.
e).

The kana character table is composed of 64 characters, and the Kiyon characters are "a", "ka", "sa", "ta" and "na".
The "ha", "ma", and "ra" lines are the lines, and the voiced and semi-voiced characters are the lines "ga", "da", "za", and "@", which are 60 characters. In addition, there are four characters, “ya”, “yu”, “yo”, and “wa”. However, it is assumed that the row is> =＝ row. These 64
Characters are associated with 6-bit binary numbers.

The operation of the geographic information generation system configured as described above will be described below. First, the registrant operates the registrant's personal computer 3 to call the map of Japan, the map of the prefecture, the map of the area, and the map of the town from the geographic information generation server 4 via the network 2 in order, and displays the map on the screen. Let it. For example, a 1/2500 map shown in FIG. 4 is displayed, and a desired position is indicated by a cursor (instruction point Ai) on this map. If the coordinate system is old, it is requested to convert to a new coordinate system for the year 2000.

In response to the input of the designated point Ai, the new geocode generation unit 7 and the belonging tile calculation unit 10 perform the processing of the flowcharts of FIGS. 5 and 6 to obtain the latitude and longitude, the system identification code, the registrant identification code, and the variant. The information consisting of the identification code is converted into eight characters.

The new geocode generation unit 7 determines the designated point A
The latitude and longitude of i are read (S501). In this description, the designated point Ai is 140 ° 51'20 ″ east longitude, 3 latitude north
5 ° 51′20 ″.

Next, it is determined whether or not a new coordinate system conversion command corresponding to the year 2000 is input (S503). If the new coordinate system conversion command is input, the read east longitude 140 ° 51′20 ″, 35 ° 51′20 ″ north latitude is converted to a new coordinate system (S505). Then, the latitude and longitude are sent to the belonging tile calculation unit 10, and the new coordinate system (I, J, d, e) in the large tile Bi corresponding to 840 km × 1920 km covering the Japan map is obtained.

In this way, (I.J) is similarly obtained for islands in the extension.

The affiliation tile calculation unit 10 determines the designated point A
The primary tile mi in the large tile Bi to which the latitude (xx degrees, xx minutes, xx seconds) and longitude (xx degrees, xx minutes, xx seconds) corresponding to i belong is calculated (S507). . However,
Each primary tile is assigned a tile number.

The calculation method in step S507 will be described in detail. The latitude and longitude are converted into radians, and the geographic coordinate system (X, Y) is moved to a central point of the Japan map in the database 5.

That is, the input latitude and longitude are converted by the equation shown in Equation 1.

[0053]

(Equation 1) Next, the x coordinate (longitude) in the coordinate system (x, y) having the origin (xo ', yo') after the movement is compressed according to the latitude axis as shown in Expression 2 to make the distance equal. That is,
Equidistant by substituting the result of Equation 1 into Equation 2.

[0054]

(Equation 2) Then, coordinate axes (x ′, y ′) rotated at a rotation angle a (30 ° 45′18 ″) are obtained, and a large rectangular parallelepiped tile Bi (sradia whose origin is the origin) covering the whole of Japan.
n is equivalent to covering the whole land with tiles).

That is, the latitude converted by the equation (2),
The coordinates (x, y) corresponding to the longitude are defined on the large tile Bi by converting as shown in Expression 3.

[0056]

(Equation 3) Next, tile coordinates (I, J) for determining the range of latitude (degrees, minutes) and longitude (degrees, minutes) in the large tile Bi are obtained. In the allocation of the tile coordinates, for example, the integers (I, J) and the remainders (d, e) are calculated such that the integer coordinate of the southwest end tile of the whole of Japan shown in FIG. 3 is (1, 1).

The remainder (d, e) becomes the local coordinates in the primary tile. That is, the local coordinates (d, e) in the primary tile are obtained as shown in Expression 4 (S509).

[0058]

(Equation 4) Also, the number of the primary tile assigned to the large tile Bi in the range determined by the equation 4 is extracted (S
511, S513).

For example, as shown in Expression 4, IL, IU,
The values of JL and JU are determined, and only the land except the sea is extracted (S511), and a tile number is assigned to the primary tile of the large tile Bi (S513).

In this description, 140 ° 51 ′ east longitude, 3 latitude north
The tile number of the primary tile in the large tile of 5 ° 51 ′ is obtained as “2564/8192”. "819
"2" is the total number of tiles only on land.

The aforementioned IL is the lower limit of the I axis of the large tile, IU
Is the upper limit, JL is the lower limit of the J axis, and JU is the upper limit. Also,
In the case of an island or the like, a tile number is assigned to each island, the local origin is adjusted, and the offset is specified in the table.

In this way, the coordinates of the island in the large tile are obtained. That is, the coordinates of the island are obtained as shown in Expression 5. The method of obtaining the coordinates of this island will be described later.

[0063]

(Equation 5) The local coordinates (fineness of about 0.1 second) in the primary tile obtained in step S509 are the total tiles when the primary tile is divided into 2.5 m units as shown in Expression 6. It is obtained from the number 4000, the remainder (d, e), and s. In the present description, “20” at 140 ° 51′20 ″ east longitude and 35 ° 51′20 ″ latitude north has a d-axis of “178”.
9 "and the e-axis are obtained as" 3352 ".

[0064]

(Equation 6) Then, the new geocode generation unit 7 reads the value of the coordinates (d, e) in the primary tile mi and the tile number ti of the primary tile in step S509, generates an integrated code (combination), and then performs the integration. Code ki
And the registrant identification code gi, the system identification code wi, and the integration code ki that have been input in advance (S51).
5). For example, "1 | 1 | 2564 | 1789 | 335
2: actually binarized "(hereinafter referred to as prototype integrated code Pi).

The above-described registrant identification code gi (may include an extension flag indicating an overflow of the registrant)
Is represented by 6 bits, and the system identification code wi is represented by 3 bits.

The tile number ti is represented by 13 bits, and the coordinates (d, d) of the step width of the secondary tile in the primary tile
e) is represented by 12 bits each.

This means that if the land is covered with primary tiles of 10 km on a side, the whole of Japan will not exceed “8192”.
It can be represented with a maximum of 13 bits.

Further, when the primary tile is meshed with 2.5 m, d and e are each within 4000, and therefore can be expressed with 12 bits each.

That is, although "2564" can be represented by 12 bits, it is represented by 13 bits in this example, and "1789"
Even though can be represented by 11 bits, it is represented by 12 bits in this example, and “3352” can be represented by 12 bits. Therefore, the prototype integrated code Pi in step S515 is “46 bits”.

Then, it is determined from the system identification code wi of the prototype integrated code Pi whether or not rearrangement is necessary (S517). For example, if the system is for registering the position of an individual, rearrangement is performed. However, the system identification code wi is not rearranged.

If it is determined in step S517 that rearrangement is necessary, rearrangement is performed on a group basis or on a bit basis except for the system identification code gi (S51).
9). This rearranged code is simply referred to as the integrated code Pki.
Called. As the integrated code Pki, four types of variants are generated.

Next, the variant number counter hiu is set to "4" (S601). In step S519, the integrated code P
As ki (after rearrangement) is generated, the value of the variant counter hi is added (hi = hi + 1) (S60).
3). Next, it is determined whether or not the added value hi has reached the variant number counter hiu set value "4" (S605).
If not, the bits of the prototype integrated code Pi are rearranged (S607), and the rearranged integrated code Pki is stored in the memory (S609). And
The new position information code Rpi (new integrated code Rpi) obtained by adding the 2-bit variant identification code ri to the rearranged integrated code Pki is stored (S611), and the process returns to step S603.

The variant identification code ri is “00” or “01”, “10”, or “11”, and indicates four kinds of binary numbers. This means the type number of the integrated code Pki after rearrangement. The variant identification code ri is associated with a sorting procedure Qi according to each variant.

Here, the reason for adding the 2-bit variant identification code ri in step S611 will be described.

The system identification code wi (3 bits),
Registrant identification code gi (6 bits) and tile number ti
The total number of bits (13 bits) and the local coordinates (12 bits each) is 46 bits, and this 46-bit prototype integrated code Pi is not a multiple of the character code (6 bits). Therefore, a 2-bit variant identification code ri is added in step S611 to obtain a new 48-bit integrated code Rpi. That is, it is set to be a multiple of the number of bits (6 bits) of the character code, and if it is divided into 6 bits, it can be divided into 8 pieces.

The one to which the variant identification code wi is added is called a new position information code Rpi (also referred to as a new integrated code Rpi).

If it is determined in step S517 that rearrangement of the prototype integrated code Pi is unnecessary, the process returns to step S601 in FIG.

Further, in step S605, the variation counter hi sets the value ("1") set in step S601.
Or, when it is determined that “4”), the first number ro of the variant identification code ri is set (S613), and a new integrated code Rpi including the set variant identification code ri (ri = ro) is read. (S615). That is,
The new integrated code Rpi of 48 bits will be read.

Next, this new integrated code Rpi is divided into 6 bits from the lower order (S617), and these 6 bits are converted into “Kana” in a kana character table (S619). Is transferred to the personal computer for the registrant and displayed on the screen (S621). For example, as shown in FIG. 7, it is displayed as "colors".

Next, a new integrated code Rp
It is determined whether there is another i (S623), and if there is another new integrated code Rpo, the variant identification code ri
Is updated to the next variant identification code ri (ri = ri +
1) After that (S625), the process returns to step S615.

That is, it is determined whether or not all the new geocodes Pri obtained by converting all the new integrated codes Rpi stored in the memory into eight kana characters are displayed.

It should be noted that the new integrated code Rpi in step S611 is one when the variant counter hiu is set to "1" in step S601, and the new variant code Rpi is one.
When u is “4”, a new integrated code Rp
i is four.

If it is determined in step S623 that there is no other new integrated code Rpi in the memory, one of the four new geocodes Pri consisting of eight kana characters is selected. Is determined (S627).

The new geocode Prf (also called a new geocode or registration code) selected in step S627 is stored, and the new geocode Prf is notified to the personal computer for the registrant (S629).

That is, as shown in FIG. 8, when the target accuracy is about 2.5 m, the new geocode Pkpi is
It is composed of a 13-bit tile number ti, 12-bit local coordinates, a 3-bit system identification code wi, a 2-bit variant identification code ri, and a 6-bit registrant identification code gi (including an extension flag). Will be.

<Second Embodiment> Next, the operation of the new geocode decoding unit will be described as a second embodiment. FIG. 9 is a flowchart for explaining the operation of the new geocode decoding unit 8.

In order to activate the new geocode decoding section 8, for example, a keyboard is operated on the new geocode reference screen to input "moirozochimozo". That is, a new geocode Pri (including Prf) is input (S901).

Next, the decoding / coding unit 6 of the server activates the new geocode decoding unit 8 in accordance with the new geocode decoding command input together with the new geocode Pri (“colors and nicks”).

The new geocode decoding section 8 divides each character of the input new geocode Pri (“colors”), assigns a code of a kana character table corresponding to this character, and assigns a 6-bit code. And concatenate them (S
903). That is, the new integrated code Rpi is restored.

Next, the restored new integrated code R
2 at a predetermined position (for example, the head) of pi (48 bits)
The variant identification code ri of the bit is extracted (S905).
That is, the rearranged and encrypted integrated code Pk
i have got.

Next, the reordering procedure Qi corresponding to the variant identification code ri is read, and the encrypted integrated code Pki (46 bits) is reordered and restored based on the reordering procedure Qi ( (S907), the data is separated into 13 bits, 12 bits, 12 bits, 3 bits, and 6 bits from the lower order, and this is notified to the coordinate conversion unit 11 (S90).
9). The rearrangement in step S907 is a procedure of rearranging the tile number ti, the vertical and horizontal coordinates of the step size of the secondary tile in the primary tile, and the procedure of rearranging according to the system identification code and the registrant identification code.

That is, the system identification code “1”, the registrant identification code “1”, and the coordinates in the tile “1789, 33”
52 "and the primary tile number" 2564 ".

Then, the coordinate conversion section 11 restores the coordinates (X, Y) of the primary tile from the origin in the XY coordinates of the large tile Bi from the primary tile number ti (S91).
1).

Further, the coordinate conversion unit 11 reads the local coordinates (d, e) in the restored primary tile, and based on the local coordinates and the restored primary tile coordinates, the local coordinates in the large tile. By reconstructing (X, Y), the original latitude and longitude (140 ° 51'20 ″ east longitude, 35 ° 51′20 ″ north latitude)
Is obtained (S915).

That is, as shown in at least FIG. 10, the new geocode generation unit 7 in the first embodiment includes a character bit number generation step 20, a code integration step 21, a variant identification code addition step 22, a rearrangement, and a rearrangement. It comprises a step 23, a character conversion step 24, a selection step 25, and a registration step 26.

The characterizing bit number generation step 20 converts the tile number ti (binary code) obtained by the belonging tile calculation unit 10 into 13 bits (when the tile number ti is 13 bits or less, the bit number becomes 13 bits). ("0" is written at the beginning).

The coordinates (d, e) in the primary tile mi
Into 12 bits (12 bits or less for 12 bits or less).
("0" is written at the beginning so that it becomes a bit).

Further, the entered registrant identification code gi
To 6 bits (in the case of 6 bits or less, "0" is written at the beginning so as to be 6 bits).

Further, the system identification code wi is set to 3 bits (in the case of 3 bits or less, "0" is written at the beginning so as to be 3 bits). These codes are temporarily stored in the memory 30. That is, a prototype integrated code Pi of 46 bits in total is obtained.

In the code integration step 21, the tile number, the coordinates in the primary tile, the system identification code wi, and the registrant identification code gi are each set to a predetermined number of bits in the character bit number generation step 20 and stored in the memory 30. Then, a prototype integrated code Pi obtained by integrating these in a row is stored in the memory 31. That is, a prototype integrated code Pi of 46 bits in total is obtained.

In the variant identification code adding step 22, when the prototype integrated code Pi is generated by the code integrating step 21, a two-bit variant identification code ri is added to the prototype integrated code Pi, and The original integrated code Pi is converted into a new integrated code Rpi of 48 bits in total.

The reordering step 23 includes a variant identification code ri.
Is added to the memory 31 according to the sorting procedure Qi (Q1, Q2, Q3, Q4) according to the variants “00”, “01”, “10”, and “11” stored in the memory 32. Are rearranged, and four new integrated codes Rpi (Rp1, Rp2, Rp3, Rp
p4) is generated in the memory 33.

The character conversion step 24 includes four types of new integrated codes Rpi (Rp1 and Rp1) generated in the memory 33.
2, Rp3, Rp4) are divided into 6 bits each, and “Kana” corresponding to the JIS code corresponding to the 6 bits is allocated, thereby creating four types of new geocodes Pr composed of eight characters (Pr1, Pr2). , Pr3, Pr
4) Generate and transfer these sequentially.

The selection step 25 is performed by the registration
The new geocode Prf selected from the types of new geocodes Pri is notified.

The registration step 26 stores the new geocode Pri and the sorting procedure Qi corresponding to the variant identification code ri in the database.

On the other hand, as shown in FIG. 11, the new geocode decoding unit 8 in the second embodiment includes at least a binary encoding step 40 and a variant identification code extracting step 41.
And a rearrangement / restoration step 42 and a bit separation step 43.

The binary encoding step 40 of the new geocode decoding section 8 includes a new geocode Pri consisting of eight characters.
Is sequentially separated for each character, and is sequentially converted to a binary code defined in the kana character table 9. That is, a binary code of 48 bits (new integrated code Rpi) is generated (restored) in the memory 45a.

In the variant identification code extracting step 41, a 2-bit variant identification code ri is extracted from the restored binary code (new integrated code Rpi), and is restored to a 46-bit code by reverse rearrangement. .

The reordering / restoring step 42 reads the reordering procedure Qi in the memory 32 corresponding to the retrieved variant identification code ri, and generates a restoring procedure by performing backward calculation from the procedure Qi. Then, according to this procedure, 4
Rearrange 6-bit codes.

The bit separation step 43 is performed by removing the system identification code Wi and the registrant identification code gi from the 46-bit binary code, and includes a 13-bit tile number and a secondary mesh tile composed of 12 bits and 12 bits. The number and the number are sent to the coordinate conversion unit 11 to restore the latitude and longitude.

Note that the system identification code wi is selected from among them.
, And in accordance with the meaning, the remaining code is subjected to the reverse operation of the rearrangement indicated by the system identification code to be a prototype integrated code Pi (46 bits).

<Embodiment 3> Here, the description of the case of an island not described in the belonging tile calculation unit 10 will be supplemented. The islands and the like store tile numbers in separate lists.

That is, when the latitude and longitude are input and the tile number corresponding to the latitude and longitude does not exist in the large tile Bi, as shown in FIG. 12, the local origin of the primary tile number t of another list is set as shown in FIG. Ask. FIG. 12 shows a case where an island extends over a plurality of primary tiles.

In such a case, all the numbers of the primary tiles that straddle the island are stored in association with each other.

Then, a new tile is generated so that the island fits in as few primary tiles as possible, the origin of the local coordinates of this tile is determined, and the local coordinates from this origin are obtained as shown in FIG. .

[0116]

(Equation 7) At this time, the vector direction differs for each quadrant.

The new geocode Pri (including Prf) generated in the above-described embodiment is used for the new geocode generation unit 7, the new geocode decoding unit 7, and the coordinate conversion unit 1.
Needless to say, 1 can be used in connection with a city policy system, an emergency disaster prevention system, a traffic control system, and a car navigation system.

[0118]

As described above, according to the present invention, the tile number of the first mesh indicating the upper digits of the latitude and longitude defined on the large tile covering the whole of the predetermined map, and the first mesh And the vertical and abscissas in the first mesh indicating the lower order digits defined in are read, the tile number is indicated by a first number of bits capable of expressing the total number of the first meshes of the large tile, and The vertical and abscissas of the first mesh are obtained by converting the first mesh into meshes at predetermined intervals.
Are represented by a second number of bits that can represent the total number in the mesh.

After generating an integrated code integrating the tile number and the vertical and horizontal coordinates in the mesh, a first predetermined number of bits is added so that the total number of bits is a multiple of the number of bits of the character code. A new uniform integrated code is generated, and a new geocode of several character strings is generated according to the bit string of the new integrated code.

For this reason, when the latitude and longitude according to the geographic coordinates are input, this latitude and longitude information is included in a new integrated code which is a multiple of the number of bits of the character code, and a predetermined number of new integrated codes are included. Has been obtained.

Therefore, conventionally, the latitude and longitude are conveyed by a sequence of numbers having a large number of digits. However, according to the present invention, since the latitude and longitude can be conveyed by several character strings, it is easy to convey to the other party, Easy to remember on the side.

Further, since the geocode has a uniform data structure instead of a hierarchical structure of the position data such as latitude and longitude, there is an effect that it can be easily changed.

Further, the new geocode is obtained by integrating an integrated code indicating latitude and longitude into the first predetermined number of bits, which is the total of the identification code of the input person, the system identification code for classifying the application of the new geocode, and the variant identification code. Since it is generated from a simple integrated code, it has a system identification code and a registrant identification code.

For this reason, even if the same position (mesh) is input with a new geocode, the new geocode identifies and registers or informs the feature at the position, the registrant, and the system that uses the position information. Since it also has a function, for example, an effect of being able to simplify and show a business office mailing tag is also obtained.

Also, since the integrated code is rearranged and a plurality of types of character strings are generated, and a character string selected from these is used as a new geocode, the confidentiality is excellent.

Further, with the input of a new geocode composed of several characters, the new geocode is converted into a binary code sequence based on a character table, and then the variant identification code is removed and restored. Since the tile number of the first mesh and the bit string of the section corresponding to the coordinates in the first mesh are separated and the coordinates of the geographic coordinate system corresponding to the numbers indicated by these bit strings are calculated, Latitude and longitude (degrees, minutes,
Second) can be restored.

Further, since the program of such a position information conversion method is stored in a storage medium, the emergency management system for urban policy systems, firefighting, police, etc., traffic control systems, forests, farmland, etc. When this storage medium is provided in an information management system, a customer management system such as a store, a transportation planning system, a car navigation system, etc., when a new geocode composed of several character strings is input in a program of the storage medium, the automatic storage is performed. Since these are converted to latitude and longitude before being sent to these systems, the effect of being extremely versatile is obtained.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a geographic information generation system using a new geocode according to an embodiment.

FIG. 2 is an explanatory diagram illustrating a belonging tile calculation unit.

FIG. 3 is an explanatory diagram illustrating a large tile and a primary tile.

FIG. 4 is an explanatory diagram illustrating a screen of an instruction point.

FIG. 5 is a flowchart illustrating an operation of the first exemplary embodiment of the present invention.

FIG. 6 is a flowchart illustrating an operation of the first exemplary embodiment of the present invention.

FIG. 7 is an explanatory diagram illustrating a display example of a new geocode.

FIG. 8 is an explanatory diagram illustrating the number of constituent bits of a new geocode.

FIG. 9 is a flowchart illustrating the operation of the second embodiment.

FIG. 10 is a configuration diagram illustrating the concept of the first embodiment.

FIG. 11 is a configuration diagram illustrating the concept of the second embodiment.

FIG. 12 is an explanatory diagram illustrating a method of calculating tiles belonging to an island according to the third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Geographic information generation system 2 Network 3 PC of registration applicant 4 Geographic information server 6 Decoding / coding command part 7 New geocode generation part 8 New geocode decoding part 9 Kana character table 10 Affiliation tile calculation part 11 Coordinate conversion part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kiichi Hirono 4-2-18 Shinjuku Shinjuku, Shinjuku-ku, Tokyo Shinjuku Kofu Building Inside Asia Air Survey Co., Ltd. (72) Inventor Manabu Mana 4-2, Shinjuku, Shinjuku-ku, Tokyo 18 Shinjuku Kofu Building Asia Air Survey Co., Ltd. F-term (reference) 2C032 HB03 HB05 HB11 HC27 HD00 5B075 ND07 NK02 PP02 PQ02 UU13 9A001 DD13 EE02 JJ01 JJ11 JJ72 JJ78 KK60 LL03

Claims (12)

[Claims] 1. With the input of a position on a map composed of latitude and longitude, this position is mapped to a plane assigned a first mesh number, which is a pair of the map and a mesh of the map at regular intervals. After that, the position on the large tile covering the entire map is meshed with the number of the first mesh and the second mesh of the first mesh at a predetermined interval (predetermined interval≪constant interval). When the first
In the position information conversion method obtained by using the vertical and horizontal coordinates of the second mesh in the mesh of (a). Reading the number of the first mesh in the large tile corresponding to the input position, and reading this number as the first bit number when the total number of the first meshes in the large tile is represented by a binary number (B). The vertical and horizontal coordinates in the first mesh when the second mesh is defined as the first mesh, when the total number of the second meshes in the first mesh is represented by a binary number. (C). Integrating the number of the first mesh represented by the first number of bits and the vertical and horizontal coordinates of the second mesh represented by the second number of bits to form an integrated code; ,
(D). (A) integrating a code having a first predetermined number of bits such that the number of bits is a multiple of the number of bits of the character code with respect to the integrated code, and using the code as a new integrated code; Reading the new integrated code, dividing the new integrated code by the number of bits of the character code, and sequentially extracting characters corresponding to the divided binary code sequence from a character table; (f). Collecting the extracted characters by the number of divisions in the step (e) and informing the collected character strings as a new geocode. (G). With the input of the identification code of the input person of the latitude and longitude, the identification code of the input person is changed to the first type.
A step represented by a third number of bits equal to or less than a predetermined number of bits;
(H). The system identification code is represented by a fourth number of bits that is equal to or less than the first predetermined number of bits even when the third number of bits is added with the input of the system identification code for classifying the application of the new geocode. (I). With the input of the identification code of the input person and the system identification code, the first bit is added to the total number of bits of these identification codes.
(J) adding a second predetermined number of bits for obtaining the predetermined number of bits, and using the code of the second predetermined number of bits as a variant identification code; Integrating the code of the total number of bits when the identification code of the input person, the system identification code, and the variant identification code are combined as the code of the first predetermined number of bits in the step (d). 2. The position information conversion method according to claim 1, further comprising: (K). Each time the new integrated code is generated, the code of the new integrated code is rearranged to generate a plurality of types of new integrated codes, and the rearranged new integrated code is stored in the step (e). 3. The position information conversion method according to claim 1, further comprising the step of: 4. In the step (d), after combining the system identification code, the identification code of the input person, and the integrated code in this order, the combined code sequence is used as a prototype integrated code, and the integration of the prototype is performed. 4. The position information conversion method according to claim 1, wherein the variant identification code is combined at a predetermined position of the code, and the combination is used as the new integrated code. 5. The method according to claim 1, wherein the step (c) comprises generating the integrated code in which the vertical and horizontal coordinates of the second mesh in the first mesh and the tile number are combined in this order from the top. Claims 1 to 4
Described location information conversion method. 6. The position information conversion method according to claim 1, wherein said character code is 6 bits, and said variant identification code is 2 bits. (L). After notifying the plurality of types of new geocodes, the selected new geocode as a new geocode of the latitude and longitude of the input person, the new geocode, the input code of the input person, the system identification code, and the sorting procedure. 7. The position information conversion method according to claim 1, further comprising the step of: (M). A step of sequentially separating the new geocode in units of characters in accordance with the input of the new geocode consisting of the several characters, and sequentially converting the characters into a binary code sequence having a corresponding number of bits in a character table; ). Integrating the binary code string converted in the step (m), obtaining a new integrated code rearranged in the step (k), and removing the variant identification code; (p). When this variant identification code is removed, read the rearrangement procedure corresponding to the variant identification code, and reverse this procedure to obtain the original integrated code consisting of the input person's identification code, system identification code and integrated code. Restoring; (q). The restored original integrated code is separated from the lower order in the order of the first bit number, the second bit number, the third bit number, and the fourth bit number, and
Obtaining the vertical and horizontal coordinates of said second mesh and said tile number within said mesh; and (r). The coordinates of the first mesh of the large tile corresponding to the tile number are obtained, the coordinates are combined with the vertical and horizontal coordinates of the second mesh in the first mesh, and this is inversed to the latitude and longitude of the map. 8. The method according to claim 1, further comprising the step of mapping to obtain a latitude and longitude corresponding to the input new geocode. 9. When a position on a map consisting of latitude and longitude is input, the position is mapped to a plane to which a number of a first mesh, which is a pair of the map and meshes the map at regular intervals, is assigned. After that, the position on the large tile covering the entire map is meshed with the number of the first mesh and the second mesh of the first mesh at a predetermined interval (predetermined interval≪constant interval). When the first
A storage medium used in an apparatus obtained by using the vertical and horizontal coordinates of the second mesh in the mesh of
(A). Read the number of the first mesh in the large tile corresponding to the input position,
A step of expressing the total number of the first meshes in the large tile by a first number of bits when expressed by a binary number; (b). The vertical and horizontal coordinates in the first mesh when the second mesh is defined as the first mesh, when the total number of the second meshes in the first mesh is represented by a binary number. (C). Expressing each with a second number of bits; Integrating the number of the first mesh represented by the first number of bits and the vertical and horizontal coordinates of the second mesh represented by the second number of bits, and using this as an integrated code; , (D). Integrating the integrated code with a code having a first predetermined number of bits such that the number of bits is a multiple of the number of bits of the character code, and converting the integrated code into a new integrated code;
(E). Reading the new integrated code, dividing the new integrated code by the number of bits of the character code, and sequentially extracting characters corresponding to the divided binary code sequence from a character table; (f). Collecting the extracted characters by the number of divisions in the step (e) and transmitting the collected character strings as a new geocode. Medium. (G). (H) displaying the identification code of the input user in a third bit number equal to or smaller than the first predetermined bit number in accordance with the input of the identification code of the input user of the latitude and longitude; The system identification code is represented by a fourth number of bits that is equal to or less than the first predetermined number of bits even when the third number of bits is added, in response to input of a system identification code for classifying the application of the new geocode. The step of causing
(I). With the input of the identification code of the input person and the system identification code, the second predetermined number of bits to become the first predetermined number of bits is added to the total number of bits of these identification codes. Converting a code having a predetermined number of bits into a variant identification code; and (j). Integrating the code of the total number of bits when the identification code of the input person, the system identification code, and the variant identification code are combined as the code of the first predetermined number of bits in the step (d); (K). Each time the new integrated code is generated, the code of the new integrated code is rearranged to generate a plurality of types of new integrated codes, and the rearranged new integrated code is stored in the step (e). 10. A storage medium storing a position information conversion program according to claim 9, wherein the program is transmitted to a storage medium. 11. The storage medium storing a position information conversion program according to claim 9, wherein said character code is 6 bits, and said variant identification code is 2 bits. (M). A step of sequentially separating the new geocode in units of characters in accordance with the input of the new geocode including the several characters, and sequentially converting the characters into a binary code string having a corresponding number of bits in a character table; ). Integrating the binary code string converted in the step (m),
(C) removing the variant identification code after obtaining the new integrated code rearranged in the step (k); When this variant identification code is removed,
Read the sorting procedure corresponding to the variant identification code,
(Q). Reverting the procedure to restore the original integrated code including the input person identification code, the system identification code, and the integrated code; The restored original integrated code is separated from the lower order in the order of the first number of bits, the second number of bits, the third number of bits, and the fourth number of bits, and is separated in the first mesh. Calculating the vertical and horizontal coordinates of the second mesh and the tile number in (r). The coordinates of the first mesh of the large tile corresponding to the tile number are obtained, and the coordinates are combined with the vertical and horizontal coordinates of the second mesh in the first mesh, and this is used as the latitude and longitude of the map. 12. A storage medium storing a position information conversion program according to claim 9, further comprising the step of: inversely mapping the information to obtain a latitude and longitude corresponding to the input new geocode.