JPH07234130A - Position indicator - Google Patents

Abstract

PURPOSE:To display a present position directly on a topographic view, etc., without increasing a product cost. CONSTITUTION:A calculator 11 calculates reduced scale information of a map based on longitude and latitude information of a reference point stored in a memory 12 and actual size information of the map from an operation controller 14, and stores it in the memory 12. The calculator 11 calculates positional information to a reference point of a present position of a body of a position indicator 1 based on the longitude and latitude information from a GPS receiver body 3 to be input through a connecting cord 4 and reduced scale information of the map from the memory 12 or the controller 14, and outputs it to a converter 13. The converter 13 converts the positional information from the calculator 11 and the controller 14 to numeric value information for displaying coordinates on a display region of a transmission type liquid crystal display plate of a display unit 15 or displayed on a numeric value display unit, and outputs it to the unit 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position display device, and more particularly to a GPS (Global Positioning S).
The present invention relates to a position display method for displaying position information detected by a receiver on a topographic map or the like.

[0002]

2. Description of the Related Art Conventionally, as this kind of position display method,
A method of storing information such as a topographic map in a storage device, reading the position information detected by the GPS receiver from the storage device, and displaying it on the topographic map displayed on the display device with a pointer such as a cross mark is a method. It is taken.

A portable device using this method uses GPS
For the convenience of use of the receiver, a structure in which a storage device for storing information such as a topographic map and a display device for displaying such information are mechanically integrated with a GPS receiver is adopted.

In addition, a U-shaped frame is attached to the map book,
There is also a method of using a device in which a horizontal light emitting diode array and a vertical light emitting diode array, each of which has a plurality of light emitting diodes, are arranged in the vertical and horizontal directions of the frame.

In this device, one light emitting diode of each of the lateral light emitting diode array and the vertical light emitting diode array is caused to emit light in accordance with the position information detected by the GPS receiver, and the latitude and the latitude of the current position are determined by each of the light emitting diodes. The longitude is displayed. This method is described in detail in Japanese Patent Application Laid-Open No. 3-68990.

In the above method, a map book or the like is used without a storage device for storing information such as a topographic map to reduce the product cost of the storage device and the display device, and a transparent member to be overlaid on the map book. Put a grid line in the box and make each one of the horizontal LED array and the vertical LED array arranged in the U-shaped frame emit light, and the current position on the map book will be displayed. We are trying to grasp intuitively.

[0007]

In the above conventional position display device, the position information detected by the GPS receiver is read from the storage device and displayed on the topographic map or the like displayed on the display device by a pointer such as a cross mark. In the case of this method, the storage device and the display device are housed in the same mechanism as the GPS receiver, so that the storage medium is physically limited.

That is, in a portable device, the size of the storage device itself for storing the topographic map and the like is limited, so that the storage capacity is also limited and the amount of information such as the topographic map that can be stored in the storage device is limited. It becomes a thing. Therefore, the topographic map displayed on the display device is limited to a specific area, or the display content of the topographic map becomes coarse.

However, even if the above-mentioned position display device is an in-vehicle type, the storage capacity of the storage device is less restricted, but the product cost increases as the storage device with a larger capacity is used. .

On the other hand, in the case of the method of disposing the light emitting diode for displaying the latitude and longitude around the map book or the like, the position display device and the map book form a specific structural relationship. Therefore, it is difficult to apply it to a commercially available atlas or topographic map other than the atlas that forms the specific structural relationship.

Further, the latitude and longitude of the current position are displayed by one light emitting diode of each of the lateral light emitting diode array and the vertical light emitting diode array arranged in a U-shaped frame attached to the outer periphery of the map book. Therefore, the current position cannot be displayed directly on the topographic map.

Therefore, an object of the present invention is to solve the above problems and to provide a position display device capable of displaying the current position directly on a topographic map or the like without increasing the product cost.

[0013]

A position display device according to the present invention is a position display device for displaying a current position calculated on the basis of information from a satellite, and which displays a preset reference point and the current position. Display means for transmitting the contents of the map when placed on the map to be displayed and displaying the reference point and the current position on the map, the reference point, the scale of the map, and the satellite. Calculating means for calculating the coordinates of the current position on the display means based on the above information.

In addition to the above-mentioned configuration, another position display device according to the present invention is characterized in that the map is based on the distance between the first and second reference points on which the distance between them is preset. It has a calculation means for calculating the scale of.

Another position display device according to the present invention has, in addition to the above configuration, storage means for storing longitude information and latitude information of each of the first and second reference points according to an instruction from the outside. Means for calculating the distance between the first and second reference points based on the contents of the storage means, and means for calculating the scale of the map from the distance between the reference points and the distance on the drawing. It is equipped with.

[0016]

[Function] A plurality of reference points are displayed on a display plate that transmits the contents of the map which should display the preset reference point and the current position, and the intervals between the plurality of reference points on the display plate are displayed on the map. The distance between the points corresponding to each of the plurality of reference points in (3) is set.

At this time, the scale of the map can be calculated from the distance between the reference points on the display board and the distance on the map. Therefore, the scale of the map and the current position information from the satellite can be obtained. Based on this, the current position is displayed on the display board.

The display plate on which the reference point and the current position are displayed is placed on the map so that the reference point and the point corresponding to the reference point on the map are aligned with each other. This makes it possible to display the current position on the map or the like with sufficient accuracy regardless of the scale of the map or the presence or absence of the longitude and latitude lines.

Further, since a storage device for storing information such as a map, which is required in the conventional position display device, is unnecessary, the current position can be directly displayed on the map or the like without increasing the product cost. .

[0020]

An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is a plan view of the embodiment of the present invention. In these figures, the position display device 1 has a calculation unit 11
A storage unit 12, a conversion unit 13, an operation control unit 14,
It is composed of a display unit 15.

The calculation unit 11 calculates scale information of the map based on the longitude information and latitude information of the reference point stored in the storage unit 12 and the actual size information of the map from the operation control unit 14, and the storage unit 1
Store in 2.

The calculation unit 11 also uses the longitude information and latitude information from the GPS receiver body 3 input via the connection cord 4 and the map scale information from the storage unit 12 or the operation control unit 14, The position information of the main body of the position display device 1 with respect to the reference point is calculated and output to the conversion unit 13.

The storage unit 12 stores the longitude information and latitude information of the reference point input from the GPS receiver body 3 in response to the control signal from the operation control unit 14, and also the arithmetic unit 1
1 or map scale information from the operation control unit 14 is stored.

In response to the control signal from the operation control unit 14, the conversion unit 13 receives the position information from the calculation unit 11 and the operation control unit 14 in the coordinates and numerical values on the display area of the transmissive liquid crystal display panel 15a of the display unit 15. The numerical information displayed on the display units 15b to 15e is converted and output to the display unit 15.

The display unit 15 has a transmissive liquid crystal display panel 15a for displaying the reference points a, b and the current position c in the display area, and a reference point a, displayed in the display area of the transmissive liquid crystal display panel 15a.
Numerical display unit 1 for displaying the longitude and latitude of b and scale information
5b to 15d and a numerical value display unit 15e that displays the longitude and latitude of the current position c.

The GPS receiver body 3 detects the current position longitude information and latitude information based on the information from a plurality of artificial satellites (not shown) input via the antenna 2, and outputs the longitude information and latitude information. Position display device 1 via connection cord 4
Send to.

FIG. 3 is a diagram showing a topographical map used in one embodiment of the present invention, and FIG. 4 is a diagram showing a usage example of one embodiment of the present invention. The operation of the embodiment of the present invention will be described with reference to FIGS.

In using the position display device 1 according to one embodiment of the present invention, the arbitrarily set point A in the topographic map 5 is used as one of the reference points, and the position of point A is set to G on the spot.
The PS receiver main body 3 detects the position and stores the position information in the storage unit 12.

In this case, the operation control unit 14 operates the operation button 1
When 4a is pressed, a write signal is output to the storage unit 12, so that the longitude information and the latitude information of the point A detected by the GPS receiver body 3 are stored in the storage unit 12.

Next, after moving to the point B in the topographic map 5, the position of the point B is detected on the spot by the GPS receiver body 3 as in the case of the point A, and the position information is stored in the storage unit 12.
Remember.

In this case as well, the operation control unit 14 outputs a write signal to the storage unit 12 when the operation button 14a is pressed, so that the longitude and latitude information of the point B detected by the GPS receiver body 3 is obtained. It is stored in the storage unit 12.

After that, when the actual size between the points A and B, which is the reference point measured on the topographic map 5, is input by operating the operation button 14a to instruct to calculate the scale information, the arithmetic unit 11 The longitude information and the latitude information of each of the points A and B are read from the storage unit 12 to calculate the actual distance between the points A and B.

The calculator 11 calculates the actual distance between the points A and B and the actual size between the points A and B input by the operation of the operation button 14a to obtain the topographic map 5. Is calculated and stored in the storage unit 12, and the numerical value display units 15b to 15d display the longitude information and latitude information of each of the points A and B and the scale information of the topographic map 5 via the conversion unit 13. .

The calculation unit 11 also calculates the position information of the points A and B based on the longitude information and the latitude information of each of the points A and B read from the storage unit 12, and the position information is sent to the conversion unit 13. Output.

The conversion unit 13 converts the position information from the calculation unit 11 into coordinates of the display area of the transmissive liquid crystal display panel 15a, and based on the coordinates, reference points a and b are displayed in the display area of the transmissive liquid crystal display panel 15a. Is displayed.

These reference points a and b are the transmission type liquid crystal display panel 1.
After being displayed in the display area of 5a, the main body of the position display device 1 is placed on the topographic map 5, and reference points on the display area of the transmissive liquid crystal display panel 15a are set at points A and B on the topographic map 5, respectively. Overlap a and b.

After that, the position display device 1 main body (moving body)
When the object moves, the longitude information and the latitude information of the moved position are input from the GPS receiver body 3, so that the calculation unit 11 uses the scale information stored in the storage unit 12 as the reference points a and b of the current position c. Position information is calculated and output to the conversion unit 13.

The conversion unit 13 uses the current position c from the calculation unit 11.
Is converted into coordinates of the display area of the transmissive liquid crystal display plate 15a, and the current position c is displayed in the display area of the transmissive liquid crystal display board 15a.

The above processing is processing when the scale of the topographic map 5 is unknown. If the topographic map 5 is a topographic map issued by the Geographical Survey Institute, etc., the longitude line and the latitude line displayed on the topographic map 5 are displayed. Using, the intersection of arbitrary longitude and latitude lines can be used as a reference point.

In this case, the longitude information and latitude information of the intersection and the scale information of the topographic map 5 are input by operating the operation button 14a and stored in the storage unit 12. The calculation unit 11 calculates the position information for the reference point of the current position c from the contents of the storage unit 12 and the longitude information and latitude information of the current position c from the GPS receiver body 3.

Therefore, since the reference points a and b which are the intersections of the longitude line and the latitude line and the current position c are displayed in the display area of the transmissive liquid crystal display panel 15a, the main body of the position display device 1 is displayed on the topographic map 5. If the reference points a and b displayed on the display area of the transmissive liquid crystal display panel 15a are superposed on the points A and B of the topographic map 5 (in this case, the intersection of the longitude line and the latitude line), The current position c will be displayed on the topographic map 5.

As described above, the simple transmission type liquid crystal display panel 15 is provided.
The reference points a and b and the current position c are displayed in the display area of a,
By changing the interval between the reference points a and b on the display area of the transmissive liquid crystal display panel 15a to the interval between the points A and B corresponding to the reference point of the topographic map 5, the scale of the topographic map 5, etc. It is possible to display the current position c with sufficient accuracy on the topographic map 5 or the like regardless of whether or not the longitude line and the latitude line are described.

Therefore, a conventional storage device for storing information such as a topographic map is unnecessary, and it is not necessary to use a dedicated map book or the like. Therefore, the product cost can be increased directly on the topographic map 5 or the like. The current position c can be displayed.

[0045]

As described above, according to the present invention, the scale of the map for displaying the current position calculated based on the preset reference point and the information from the satellite and the information from the satellite are used as the basis. By calculating the coordinates of the current position on the map and displaying the reference point and the current position on the display means that allows the contents of the map to be transparent when placed on this map, the topographic map can be obtained without increasing the product cost. There is an effect that the current position can be displayed directly on the etc.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a plan view of an embodiment of the present invention.

FIG. 3 is a diagram showing a topographic map used in one embodiment of the present invention.

FIG. 4 is a diagram showing a usage example of an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Position display device 3 GPS receiver main body 11 Operation part 12 Storage part 13 Conversion part 14 Operation control part 14a Operation button 15 Display part 15a Transmissive liquid crystal display board 15b-15e Numerical value display part

Claims (3)

[Claims] 1. A position display device for displaying a current position calculated on the basis of information from a satellite, which is set on a map for displaying the preset reference point and the current position. Display means for transmitting the contents of the map and displaying the reference point and the current position on the map, and the display of the current position based on the reference point, the scale of the map, and information from the satellite. A position display device, comprising: a calculating unit that calculates coordinates on the unit. 2. A calculation means for calculating the scale of the map based on the distance on the map between the first and second reference points whose mutual distances are set in advance. The position display device according to item 1. 3. Storage means for storing longitude information and latitude information of each of the first and second reference points according to an instruction from the outside, and the first and second storage means based on the contents of the storage means. The position display device according to claim 2, further comprising: a unit that calculates a distance between the reference points and a unit that calculates a scale of the map from the distance between the reference points and the distance on the drawing. .