JPH0519688A - Position information display device - Google Patents

Abstract

PURPOSE:To provide the position information display device which is applicable to a vehicle travel guidance device, etc., and can display position information on its position, etc., without requiring mass-storage medium. CONSTITUTION:An image of a sheet map which is sectioned into plural areas in the same rectangular shape and has area information corresponding to the respective areas is displayed on a display unit 17 and position information on a position to be displayed is superimposed on the image. Therefore, the display screen and sheet map correspond to each other and the visibility is good; and the sheet map is viewed corresponding to the display screen to easily recognize the position. Further, a map of roads, etc., is not displayed, so large- sized storage media such as a CD-ROM where a great large amount of data are stored are not required, so the device is reducible in size and offered at a low price to come into wide general use.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position information display device for displaying position information such as a current position or a destination in a vehicle travel guide device or the like.

[0002]

2. Description of the Related Art Conventionally, a GPS receiver 1 as shown in FIG.
There is known a vehicle travel guide device using the above. This is because the map data is stored in advance in a storage medium such as a CD-ROM 2 or a magnetic tape, and based on the map based on the map data and the latitude and longitude obtained by the GPS receiver 1,
The central processing unit 3 associates its own position with a map, and displays it on the display 6 such as a CRT through the image memory 4 and the display control unit 5. Thereby, the position of oneself can be easily recognized.

[0003]

However, in the above-described vehicle travel guide device, a storage medium such as a large capacity CD-ROM must be used to store map data. Since this large-capacity storage medium is expensive, the price of the device is high, and it is the current situation that it is not popular.

In view of the above problems, an object of the present invention is to provide a position information display device which can be applied to a vehicle traveling guide device or the like and can display position information such as its own position without requiring a large-capacity storage medium. To do.

[0005]

In order to achieve the above object, the present invention provides a display device corresponding to a paper map having area information for each of a plurality of areas divided into the same shape. A position information display device for displaying position information on a map sheet, a map book information storage means for storing map book information such as the name, page number and area information of the paper map, and position information to be displayed by a host device. Information input means for inputting,
Position information storage means for storing the position information of the display object, and map book information display for displaying the map book information corresponding to the position information of the display object on the display by the image of the double-page spread of the paper map And a position information display device for displaying a display target position on the display unit based on the position information stored in the position information storage unit.

According to a second aspect of the present invention, in the position information display device according to the first aspect, a specific position information storage means for storing position information of a plurality of types of specific places, and a position for selecting the one type of specific place. A position information display device provided with information selection means and specific location display means for displaying the positional information of the specific location selected by the location information selection means on the display device is proposed.

[0007]

According to the first aspect of the present invention, the position information of the display target is input from the host device by the information input means, and the position information is stored in the position information storage means. The map book information storage unit stores map book information such as the name, page number, area information of the paper map, and the map book information display unit stores the map book information corresponding to the position information. The image is displayed on the display unit in the image of the spread page of the map. Further, based on the position information stored in the position information storage means, the position information display means displays the display target position in a superimposed manner on the image.

According to a second aspect of the present invention, the specific position information storage means stores the position information of a plurality of kinds of specified places such as a gas station and a hot spring, and the position information selection means specifies the one type. The ground is selected. Further, the position information of the specific place selected by the position information selecting means is displayed by the specific place displaying means so as to be superimposed on the image.

[0009]

FIG. 1 is a block diagram of a position recognition device to which the present invention is applied. In the figure, 11 is a well-known GPS receiver, which receives radio waves from a plurality of satellites and outputs its own position as longitude and latitude data.

A position information display device 12 includes a central processing unit 13 including a CPU, a memory 14 connected to the central processing unit 13, a switch unit 15, a display control unit 16, and a display unit 1.
7, a memory card 18, and an interface section 19 for detachably connecting the memory card 18 and the central processing section 13.

The switch unit 15 is a momentary switch including a select switch 151, an UP switch 152, a DOWN switch 153, a RIGHT switch 154, a LEFT switch 155,
And a reset switch 156, and each switch is connected to the central processing unit 13.

The display unit 17 comprises a liquid crystal dot matrix display unit of 128 × 64 dots, for example, and is connected to the central processing unit 13 via the display control unit 16. Also,
At a predetermined position on the display surface of the display unit 17, as shown in FIG. 3, a ruled line 17a representing a small area of the same square shape in a map book described later is printed, and 8 × 8 dots are included in one small area. It is included.

The memory card 18 is a non-volatile memory,
For example, it is composed of a ROM, and the data of a predetermined map book is previously stored in the memory card 18 as map book information. That is, for example, a map book is provided corresponding to each prefecture, and a memory card 18 in which map book information is stored is provided for each map book. As shown in FIG. 4 to FIG. 6, the map displayed in the map book is subdivided into the grids of longitude and latitude and is divided into large areas ER of the same square shape that do not overlap each other. Each large area ER is printed on the spread of a map book, and further, within the large area ER, a unit length a in the longitudinal direction and the latitudinal direction, for example, in the case of a scale of 1 / 50,000, along the latitudinal line every 2.5 km. Are assigned to the coordinates A, B, C ... And the coordinates 1, 2, 3 ... Are assigned along the longitude line. In addition, in the display control processing of the present embodiment described later, the large area ER
Is divided into eight in the longitude and latitude directions. As a result, the inside of the large area ER has the same rectangular shape represented by coordinates such as (A-1), (B-1), or (A.1-1.2), (B.2-1.2). It is divided into small areas.

In the memory card 18 of each prefecture, as shown in FIG. 7, as map book information, for example, when the whole country is divided by the large area ER, the area reference point Q at the upper left corner of each large area ER is displayed. The map book name including the coordinates and each large area ER is stored in the order of the large area number, and the map book name corresponding to the map area name, the unit length a, and a plurality of large area ERs included in the prefecture. The double-page spread page number P and the coordinates of a specific place such as a gas station, a hotel, and a hot spring are stored. Here, a large area number is assigned in order from a large area ER having a larger latitude in the coordinates of the area reference point Q, and a large area ER having an equal area reference point latitude has a larger area in order from a large area ER having a larger reference point longitude. A number is assigned. Further, FIG. 7 shows the map book information stored in the memory card 18 corresponding to the map book of Gunma prefecture as an example.

Next, the operation of the position information display device having the above-described structure and the position recognition device using the same will be described with reference to the display examples shown in FIGS. 8 to 11 and the control flow chart shown in FIGS. 12 to 15. It will be explained based on the following. For example, when traveling by car or driving, the above-mentioned position recognition device and the map book including the corresponding area are carried, and the coordinates corresponding to the coordinates displayed on the image of the map book displayed on the display 17 are displayed. You can easily recognize your position by looking at the map book.

When the apparatus is activated, the display 17 displays coordinates such as A, B, C ..., 1, 2, 3, ... Representing vertical and horizontal coordinates around a ruled line that divides a small area, as shown in FIG. The characters are displayed and the image of the map book is displayed. Further, the display screens next to them are divided into a plurality of display areas D1 to D7, and at the time of startup, the display areas D1 to D3 respectively correspond to the memory card 18 and the main contents in the display area. The city name and the page number of the large area ER in the map book are displayed. In addition, the characters "TOKUTAICH", "1", "SCROLL", and "GENZAICH" are displayed in the display areas D4 to D7, respectively.

That is, the central processing unit 13 of the position information display device 12 reads the map book information from the memory card 18 (S1) and displays the coordinate character at the above-mentioned predetermined position (S).
2). Further, the above-mentioned characters are displayed in the display areas D1 to D7 (S3). Next, after inputting the data of the longitude E and the latitude N of the current position T from the GPS receiver 11 (S
4) The variable i is set to 1, the variable j is set to 3, the variable k is set to 1, and the variable m is set to 1 (S5), and the latitude ni of the area reference point Q of the i-th large area ER is set in the memory area. -Do 18
Read from (S6). After this, the latitude N is the latitude ni.
It is determined whether or not it is smaller than (S7), and the latitude N is the latitude n.
If i or more, 1 is added to the variable i (S8), and S
The processing shifts to the processing of 6.

When the latitude N is smaller than the latitude ni as a result of the determination in S7, the central processing unit 13 stores the longitude ei of the area reference point Q of the i-th large area ER in the memory cache.
It is read from the code 18 (S9). Then, it is determined whether or not the longitude E is smaller than the longitude ei (S10), and the longitude E
Is greater than or equal to the longitude ei, 1 is added to the variable i (S1
1), the process shifts to S9. When the longitude E is smaller than the longitude ei, 1 is subtracted from the variable i (S
12), the map book name MN ₀ is read from the memory card 18 (S13).

Next, the central processing unit 13 reads data such as the latitude and longitude of the area reference point Q corresponding to the i-th large area ER, the spread page number P, and the map book name MN (S1).
4) It is determined whether the map book name MN ₀ is the same as the map book name MN (S15). As a result of this determination, if the map book name MN ₀ and the map book name MN are different,
As shown in, the map book name MN including the character “Genzaichi” and the i-th large area ER is highlighted on the display 17 (S16). After that, it is determined whether the reset switch 156 is turned on (S17), and the reset switch 156 is reset.
When 156 is turned on, the process shifts to S1.

When the map book name MN ₀ is equal to the map book name MN, the longitude / latitude ei, n of the area reference point Q is obtained.
The coordinates of the vertical axis and the horizontal axis in the map book are calculated based on the difference between i and the latitudes E and N of the current position T.

That is, the central processing unit 13 determines the area reference point Q.
Latitude difference Δ by subtracting the latitude N of the current position T from the latitude ni of
n is calculated (S18). Next, the latitude difference Δn is converted to the ground surface distance Rn (S19). For example, area reference point Q
When the latitude ni is 36 degrees 41 minutes 20 seconds and the latitude N of the current position T is 36 degrees 4 minutes 00 seconds, the latitude difference Δn is 40 seconds as shown in equation (1), which is expressed in degrees. Becomes about 0.0111 degrees. Δn = 36 ° 42′00 ″ −36 ° 41′20 ″ = 40 ″ → 0.0111 ° (1) Further, when the radius r of the earth is 6378 km, the distance Rn of the ground surface corresponding to the latitude difference Δn is ( 2) It is expressed by the formula.

Rn = 0.0111 ° / 360 ° × 2πr = 1.24 km (2) After that, the central processing unit 13 calculates the coordinate of the vertical axis in the map book from the distance Rn (S20).

That is, as shown in the equation (3), the distance Rn is divided by the unit length a, and the decimal point is rounded up to obtain the coordinate on the vertical axis. Further, since the position within the unit length a on the display unit 17 is divided by 8 dots, the value after the decimal point of the result of the equation (3) is multiplied by 8 and the value after the decimal point is rounded up to the current position. Corresponding coordinates are obtained, and the coordinate on the vertical axis is 1.4.

1.24 / 2.5 = 0.496 → 1 (3) 0.496 × 8 = 3.968 → 4 (4) Next, the central processing unit 13 subtracts the longitude ei of the area reference point Q from the longitude E of the current position T. To obtain the longitude difference Δe (S
21). Next, the longitude difference Δe is converted into the ground surface distance Re (S22).

For example, the longitude ei of the area reference point Q is 13
If the longitude E of the current position T is 9 degrees 00 minutes 00 seconds, and the current position T is 139 degrees 01 minutes 45 seconds, the longitude difference Δ as shown in equation (5)
e is 1 minute and 45 seconds, which is about 0.029 when expressed in degrees.
It will be once.

Δe = 139 ° 01′45 ″ −139 ° 00′00 ″ = 01′45 ″ → 0.0291 ° (5) Further, the distance Re of the ground surface corresponding to the longitude difference Δe is
It is expressed by equation (6).

Re = 0.0291 ° / 360 ° × 2πr = 3.24 km (6) After that, the central processing unit 12 calculates the coordinates of the horizontal axis in the map book from the distance Re as described above (S23).

That is, the distance Re is divided by the unit length a, and the fractional part is rounded up to find the coordinate on the horizontal axis. Further, by multiplying the value below the decimal point of this result by 8 and rounding up the value after the decimal point, the coordinates corresponding to the current position can be obtained. It becomes 3.

Next, the central processing unit 13 displays the current position on the display 17 via the display control unit 16 by blinking the dot DT corresponding to the coordinates obtained as shown in FIG. 8 (S2).
Along with 4), the page number P of the i-th large area ER is displayed in the display area D3, and the names of major cities in the i-th large area ER are displayed in the display area D2 (S25).

After that, the central processing unit 13 determines whether or not the select switch 151 is turned on (S26). When the select switch 151 is turned on, 1 is added to the variable j (S27), and then the variable is changed. It is determined whether the value of j is 8 (S28). As a result of this determination, when the variable j is 8, the value of the variable j is set to 3 (S29). Then, the display area Dj in the display areas D3 to D7 is displayed in reverse video (S3
0), the process proceeds to S26.

As a result of the determination in S26, if the select switch 151 is not turned on, the central processing unit 13 determines whether the UP switch 152 or the down switch 153 is turned on (S31). As a result of this determination, the UP switch 152
Or, when the down switch 153 is turned on, the variable j is set to 3
(S32), it is determined whether the UP switch 152 is turned on when the variable j is 3 (S33). If the result of this determination is that the UP switch 152 is turned on, then 1 is added to the page number P (S3
4) If the DOWN switch 153 is turned on, 1 is subtracted from the page number P (S35). Next, page number P
Is displayed in the display area D3 (S36), and the page number P
The position information in the large area ER corresponding to is displayed (S3
7) Then, the process proceeds to S31.

As described above, by turning on the UP switch 152 or the DOWN switch 153 while the display area D3 is highlighted, the large area ER to be displayed can be arbitrarily changed. Positions can be confirmed across multiple large areas ER.

If the variable j is not equal to 3 as a result of the determination in S32, the central processing unit 13 determines whether or not the variable j is equal to 4 (S38). As a result of this determination, the variable j
Is equal to 4, it is determined whether or not the variable k is 1 (S39), and when the variable k is 1, the variable k is set to 0 (S40), and then the gasoline selected in the process described later. The names of specific places such as stands and hot springs are displayed in the display area D4 as shown in FIG. 10, and the dot DT1 corresponding to the position of the specific place is turned on (S41). Further, when the variable k is 0, the variable k is set to 1 (S42), the character "TOKUTAICHI" is displayed in the display area D4, and the dot DT1 corresponding to the position of the specific place is turned off (S4).
3). After this, the process shifts to S31.

When the variable j is not equal to 4 as a result of the determination in S38, the central processing unit 13 determines whether the variable j is equal to 5 (S44). As a result of this determination, the variable j
When is equal to 5, it is determined whether the variable m is 1 (S45), and when the variable m is 1, the variable m is set to 0 (S46), and then the character "4" is displayed in the display area D5. Is displayed together with wide area quadruple display (S47). After this, the process shifts to S31. That is, as shown in FIG.
The coordinate characters are deleted, the ruled line area is divided into four, and the large area ER that has been displayed until then is displayed in the upper left,
Three large areas ER adjacent to this large area ER are displayed in the right, lower right and lower parts of the ruled line area. Also, after the wide area quadruple display is selected, the page number P of the map book corresponding to each large area ER is displayed for a predetermined time as shown in FIG. Thereby, when the display of the current position is located near the boundary line of the large area ER, the page number P of the adjacent large area ER can be easily known.

If the result of the determination in S45 is that the variable m is not 1, the variable m is set to 1 (S48), and the coordinate characters are displayed, the wide area quadruple display is erased, and the standard display, that is, the ruled line is displayed. One large area ER is displayed in the area (S49). After this, the process shifts to S31.

When the variable j is not equal to 5 as a result of the determination in S44, the central processing unit 13 determines whether the variable j is equal to 6 (S50). As a result of this determination, the variable j
When is equal to 6, the position information displayed in the ruled line area is scrolled vertically in units of the large area ER (S51). At this time, the same scrolling is performed for both the standard display and the wide area quadruple display, and in the display area D3, in the case of the standard display, the page number P of the large area ER being displayed is the wide area quadruple display. , Large area ER displayed in the upper left
The page number P of is displayed. If the variable j is not equal to 6 as a result of the determination in S50, the display area D7
Is highlighted, the process moves to S4 and the current position is displayed.

As a result of the determination in S31, the UP switch 152
Alternatively, when the down switch 153 is not turned on, the central processing unit 13 determines whether the RIGHT switch 154 or the LEFT switch 155 is turned on (S52). As a result of this determination, when the RIGHT switch 154 or the LEFT switch 155 is not turned on, the process proceeds to S26, and when it is turned on, it is determined whether the variable j is equal to 4 (S5
3). As a result of this determination, when the variable j is 4, the specific place name of the next candidate or the previous candidate is displayed in the display area D4,
The position of this specific place existing in the displayed large area ER is displayed (S54). After this, the process shifts to S52.

When the variable j is not equal to 4 as a result of the determination in S53, the central processing unit 13 determines whether the variable j is equal to 6 (S55). When the variable j is 6, the ruled line area is determined. The position information displayed therein is scrolled in the horizontal direction in units of the large area ER (S56). At this time, the same scrolling is performed for both the standard display and the wide area quadruple display, and in the display area D3, in the case of the standard display, the page number P of the large area ER being displayed is the wide area quadruple display. , The page number P of the large area ER displayed at the upper left is displayed. After this, the process shifts to S52.

When the variable j is not equal to 6 as a result of the determination in S55, the central processing unit 13 determines whether or not the variable j is equal to 7 (S57). When the variable j is 7, The process moves to the process of S4 to display the current position, and when the variable j is other than 7, the process moves to the process of S52.

As described above, according to the present embodiment, the image of the spread page of the map book is displayed on the display device 17, and the current position of the user is displayed on the image, The display screen and the map book correspond to each other, and the visibility is good, and the position can be easily recognized by viewing the map book corresponding to the display screen. Furthermore, since a map such as a road is not displayed, there is no need for a large storage medium such as a CD-ROM for storing and holding these enormous amounts of data.
The device can be miniaturized, can be supplied at a low price, and can be widely spread in general.

Further, in this embodiment, since the positional information of various specific places can be displayed by being superimposed on the image of the spread page of the map book, when recognizing one's current position or the position of the specific place is displayed in the map book. It will help you when you look up, and you can easily recognize the position.

Further, in this embodiment, since the memory card 18 is used as the data storage medium and the liquid crystal dot matrix display is used as the display 17, the device can be miniaturized, and it can be portable or mounted on a vehicle. Can be applied to both.

Although a liquid crystal display is used as the display 17 in this embodiment, the display is not limited to this.

Although the map book is used in the present embodiment, the invention is not limited to this, and one sheet map may be used and the position information may be displayed correspondingly.

[0045]

As described above, according to the first aspect of the present invention.
According to the above, since the display target position is displayed overlaid on the image of the paper sheet map, the display screen and the paper sheet map correspond to each other and the visibility is good, and the paper sheet map corresponds to this display screen. The position can be easily recognized by looking. Furthermore, since a map such as a road is not displayed, there is no need for a large storage medium such as a CD-ROM for storing and storing these enormous amounts of data, so that the device can be downsized and the size can be reduced. It can be supplied at a price and can be widely spread in general.

Further, according to the second aspect, in addition to the above effect, since the positional information of various specific places is displayed in an overlapping manner on the image of the paper sheet map, the present position of the user is recognized. Or, it is a help when searching for the position of a specific place on a map book, and has a very excellent effect that the position can be easily recognized.

[Brief description of drawings]

FIG. 1 is a block diagram of a position recognition device to which the present invention is applied.

FIG. 2 is a block diagram showing a conventional vehicle travel guide device.

FIG. 3 is a diagram showing a display surface of a display according to an embodiment of the present invention.

FIG. 4 is a diagram showing a configuration of a map book according to an embodiment.

FIG. 5 is a diagram showing a configuration of a map book according to an embodiment.

FIG. 6 is a diagram showing a configuration of a map book according to an embodiment.

FIG. 7 is a diagram showing an example of map book information stored in a memory card according to an embodiment.

FIG. 8 is a diagram showing a display example in one embodiment.

FIG. 9 is a diagram showing a display example in one embodiment.

FIG. 10 is a diagram showing a display example in one embodiment.

FIG. 11 is a diagram showing a display example in one embodiment.

FIG. 12 is a control flowchart in one embodiment.

FIG. 13 is a control flowchart in one embodiment.

FIG. 14 is a control flowchart in one embodiment.

FIG. 15 is a control flowchart in one embodiment.

[Explanation of symbols]

11 ... GPS receiver, 12 ... Position information display device, 13 ...
Central processing unit, 14 ... Memory, 15 ... Switch unit, 151 ...
Select switch, 152… UP switch, 153… DOWN switch, 154… RIGHT switch, 155… LEFT switch, 15
6 ... Reset switch, 16 ... Display control unit, 17 ... Display unit, 18 ... Memory card, 19 ... Interface unit.

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] August 9, 1991

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0025

[Correction method] Change

[Correction content]

For example, the longitude ei of the area reference point Q is 13
When the longitude E at the current position T is 139 degrees 0 2 minutes 10 seconds at 9 degrees 00 minutes 00 seconds, as shown in the equation (5), the longitude difference Δ
e is 2 minutes 10 seconds, about Expressing this in degrees 0.0 36
It will be once.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction content]

[0026] Δe = 139 ° 02 '10 "-139 ° 00'00" = 02' 10 "→ 0. 0361 ° ... (5) In addition, the distance Re of the earth's surface corresponding to the longitude difference Δe is
It is expressed by equation (6).

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0027

[Correction method] Change

[Correction content]

[0027] Re = 0. 0361 ° / 360 ° × 2πr × cos (36 ° 41'20 ") = 3. 22 km ... (6) Thereafter, the central processing unit 12, a map from the distance Re in the same manner as described above The coordinates of the horizontal axis in the book are calculated (S23) ────────────────────────────────────── ────────────────

[Procedure amendment]

[Submission date] February 18, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

That is, the central processing unit 13 determines the area reference point Q.
Latitude difference Δ by subtracting the latitude N of the current position T from the latitude ni of
n is calculated (S18). Next, the latitude difference Δn is converted to the ground surface distance Rn (S19). For example, area reference point Q
Latitude ni is 36 degrees 4 2 min 0 0 seconds, and if the latitude N of the current position T is 36 degrees 4 1 minute 2 0 seconds, the latitude difference Δn becomes 40 seconds as shown in (1), which Is about 0.0111 degrees. Δn = 36 ° 42′00 ″ −36 ° 41′20 ″ = 40 ″ → 0.0111 ° (1) Further, when the radius r of the earth is 6378 km, the distance Rn of the ground surface corresponding to the latitude difference Δn is ( 2) It is expressed by the formula.

Claims (2)

[Claims] 1. A position information display device for displaying position information on a display device corresponding to a paper map having area information for each of a plurality of areas divided into the same shape, the name of the paper map, Map book information storage means for storing map book information such as page numbers and area information, information input means for inputting position information of a display target from a host device, and position information storage means for storing position information of the display target A map book information display unit for displaying the map book information corresponding to the position information of the display target on the display device by the image of the double-page spread of the paper map; and the position stored in the position information storage unit. A position information display device, comprising position display means for displaying a display target position on the display based on information. 2. Specific position information storage means for storing positional information of a plurality of types of specific locations, position information selection means for selecting one type of specific location, and specific locations selected by the position information selection means. 2. The position information display device according to claim 1, further comprising: a specific place display means for displaying the position information of 1. on the display.