JPH06102341A - Positioning display system for automobile and device used therefor - Google Patents

Abstract

(57) [Summary] [Purpose] The position of the vehicle can be displayed on the map without using a CRT or CD player. [Structure] The own vehicle position obtained by the positioning is transmitted from the own vehicle position positioning transmitter 10 to the own vehicle position reception display 20.
The vehicle position reception display 20 includes an LCD display 25 having a transparent screen. In use, the vehicle position reception display 20 is superimposed on the corresponding page of the map book 30. The page reader 23 reads the page number or the like from the corresponding page of the map book 30, and the display controller 22 thereby refers to the map data memory 24 to obtain the vehicle position on the corresponding page. A marker P indicating the position of the vehicle is displayed on the screen of the LCD display 25 and the transparent screen. [Effect] A CRT or the like becomes unnecessary. Since the amount of information to be recorded is small, it is not necessary to use a large capacity recording means such as a CDROM. It can also be used in the back seat or outside the vehicle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for measuring the position of a vehicle and superimposing it on a map, that is, a vehicle positioning display system.

[0002]

2. Description of the Related Art Conventionally, various navigation systems have been mounted on moving bodies such as automobiles. In this type of system, the vehicle position is displayed on a screen such as a CRT or a liquid crystal display together with map information. For example, GP
The vehicle position is measured by a positioning means such as an S (Grobal Positioning System) or an autonomous navigation sensor, and the positioning result is
The system is configured to display on the screen together with the map information stored in the CDROM or the like.

[0003]

However, in such a system, a CD player for reading the CDROM and a display means such as a CRT for superimposing the positioning result and the map information are required. However, the device configuration becomes large and complicated. This causes an increase in price, which hinders widespread provision to general users. It is also difficult to secure a place for installing a CD player and a CRT.

The present invention has been made to solve the above-mentioned problems, and realizes a system having a small size, a simple structure, and an inexpensive structure, and is an obstacle to its widespread use in terms of price, installation location, and the like. The purpose is to eliminate.

[0005]

In order to achieve such an object, a vehicle positioning display system of the present invention includes a vehicle position positioning transmitter for positioning and transmitting the position of the vehicle, and a location such as the lower left. A map such as a road having a fixed scale as a reference point and a predetermined scale, and a vehicle position received from a vehicle position positioning transmitter, and a received vehicle position, a coordinate value of the predetermined point and a map scale based on the map scale. It is characterized by further comprising: a vehicle position reception display that obtains the vehicle position and displays the obtained vehicle position on a transparent screen of the same scale as the map with the predetermined point as a reference point.

It should be noted that it is preferable to wirelessly connect the own vehicle position measurement transmitter and the own vehicle position reception display with infrared rays or the like.

Further, it is preferable to use, for example, one of the following two types of configurations as the vehicle position measurement transmitter used in the vehicle position measurement display system according to the present invention.

First, the first structure is a GPS receiver that receives signals from a predetermined number of GPS satellites and obtains the position of the vehicle.
And a transmitter for transmitting the own vehicle position obtained by the GPS receiver to the own vehicle position reception display.

In the second configuration, the vehicle speed meter for detecting the speed of the vehicle, the direction sensor for detecting the traveling direction of the vehicle, and the vehicle position calculated based on the detected vehicle speed and the traveling direction of the vehicle. Means, and a transmitter for transmitting the own vehicle position obtained by the calculation to the own vehicle position reception display.

Next, the following structure is preferable as the vehicle position reception indicator used in the system according to the present invention. That is, a receiver that receives the own vehicle position from the own vehicle position positioning transmitter, the received own vehicle position, a display controller that obtains the own vehicle position on the map based on the coordinate value of the predetermined point and the scale of the map, It is preferable to use a vehicle position reception display characterized by including a display for displaying the obtained vehicle position on a transparent screen of the same scale as the map with reference to the predetermined point.

Further, it is preferable to use any one of the following four types of structures as the vehicle position reception indicator.

First, the first structure is a reading means for reading page numbers from a map book having the same scale for all pages, and a memory for storing the coordinate value of the predetermined point while associating each page of the map book with the page number. , And the display controller reads the coordinate value of the predetermined point from the memory based on the page number read by the reading means.

In the second configuration, a reading means for reading a page number from a map book having an arbitrary scale for each page, and a coordinate value and a scale of the predetermined point are stored while associating each page of the map book with the page number. The display controller reads the coordinate value and scale of the predetermined point from the memory based on the page number read by the reading means.

In the third configuration, a reading means for reading a page number from a map book having an arbitrary scale for each page and a coordinate value of the predetermined point are associated with the page number for each page of the map book, and the coordinate values of the predetermined points are shown at the upper right and lower left. And a memory for storing a plurality of locations such as a display controller, the display controller reads a plurality of coordinate values of the predetermined point from the memory based on the page number read by the reading unit, and based on the read coordinate values of the plurality of locations. The feature is that the scale of the page is obtained.

The fourth structure is characterized by comprising reading means for reading the coordinate value and the scale of the predetermined point from a map book in which the scale is arbitrary for each page.

As described above, in the configuration in which the vehicle position reception display has the reading means, the information read from the map book by the reading means is recorded as a bar code on the map, and the reading means is the bar code. Is preferably read. Of course, it may be recorded in another computer-readable form.

Further, it is preferable that a circuit around the display device is housed in the frame of the display device, and that the display device displays the position of the vehicle on the map as a marker. The display is preferably a transparent liquid crystal display, for example.

[0018]

In the vehicle positioning display system of the present invention, the vehicle position is measured by the vehicle position measuring transmitter,
The positioning result is transmitted to the vehicle position reception display. The own vehicle position reception display receives the own vehicle position from the own vehicle position positioning transmitter, and obtains the own vehicle position on the map using the received own vehicle position. At that time, the vehicle position reception display uses the coordinate value of a predetermined point such as the lower left of the map or the scale of the map. The vehicle position reception display displays the obtained vehicle position on a transparent screen having the same scale as the map. At that time, the predetermined point is used as a reference point.

Therefore, in the system of the present invention, the driver of the automobile or the like is superposed by superimposing the transparent screen of the vehicle position reception display on the map so that the reference points and the superposing directions coincide with each other. Can suitably read the position of the vehicle on the map. As a result, CR
A device for displaying map information and the position of the vehicle such as T becomes unnecessary. In addition, the information required on the vehicle position reception display is sufficient for the vehicle position transmitted from the vehicle position positioning transmitter, the coordinate value of a predetermined point on the map, and the scale of the map. It is not necessary to use a large-capacity storage means, and therefore, it is not necessary to use a device such as a CD player.

Further, when the own vehicle position positioning transmitter and the own vehicle position reception indicator are wirelessly connected, no wiring is required, and therefore the own vehicle position reception indicator is used in the back seat of the vehicle or outside the vehicle. Is possible. That is, it is not necessary to provide a vehicle position reception display near the cockpit, and usability is improved.

Furthermore, a GPS is used as a vehicle position measuring transmitter.
When the configuration including the receiver is adopted, the positioning result obtained by the GPS receiver with a predetermined high accuracy is provided to the user, and the own vehicle position positioning transmitter includes the speedometer and the direction sensor. When the configuration is adopted, the own vehicle position is available to the user even in a situation where radio waves cannot be received from GPS satellites.

Next, in the case where the structure including the receiver, the display controller and the display as described above is used as the own vehicle position reception display, first, the own vehicle position positioning transmitter transmits by infrared rays or the like. The vehicle position is received by the receiver. In addition to the received vehicle position, the display controller obtains the vehicle position on the map based on the coordinates of a predetermined point on the map and the scale of the map. The display displays the obtained vehicle position on the transparent screen of the same scale as the map, with the predetermined point as a reference. That is, in the case of such a configuration, the vehicle position reception indicator is preferably realized with a relatively simple configuration.

The system of the present invention can be applied not only to a map of one leaf, but also to a map book including a map of a plurality of leaves. When the system of the present invention is applied to a map book, what information is written in each page of the map book, and what information is guided from the memory based on the information read from each page of the map book, Therefore, the embodiment of the vehicle position reception display is different.

For example, if each page of the map book has the same scale, it is not necessary to obtain the scale information from the map book or the memory. In this case, for example, the page number may be written on each page of the map book, and the coordinate value of a predetermined point on the map may be stored in the memory in association with the page number. That is, the display controller may read the coordinate value of the predetermined point from the memory on the basis of the page number read from the corresponding page of the map book to obtain the position of the own vehicle on the map.

When a map book with an arbitrary scale for each page is used, it is necessary to obtain information on the scale of each page.
For example, if the page number is written on each page of the atlas and the coordinate value and the scale of a predetermined point are stored in the memory in association with the page number, the display controller can display the page number based on the read page number. The coordinate value and scale of a predetermined point can be read from the memory, and the vehicle position on the map can be obtained based on these. Also, as the information stored in the memory,
Instead of the coordinate value and scale of the predetermined point, the coordinate value of the predetermined point may be used at a plurality of locations. With such a configuration, the display controller reads the coordinate values of a plurality of predetermined points from the memory based on the read page number and obtains the page scale based on the read coordinate values of the plurality of points. Further, as the information to be written on each page of the map book, the coordinate value and scale of a predetermined point may be used instead of the page number. In this case, the information read from each page of the map book can be used as it is for the own vehicle position calculation in the display control unit, so that the memory is omitted.

When the information such as the above-mentioned page number is recorded in the map book as a bar code, the system is simply constructed by using a bar code reader as a reading means. Further, by housing the circuits around the display device inside the frame of the display device, the device configuration is simple and the handling is easy. In addition, by using the marker on the display of the vehicle position on the display, it becomes possible for the driver of the vehicle to read the vehicle position appropriately, and by using a transparent liquid crystal display as the display, it saves power and handles. A display device that is easy to implement is realized.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of an automobile positioning display system according to an embodiment of the present invention. The system shown in this figure is composed of a vehicle position measurement transmitter 10, a vehicle position reception display 20, and a map book 30.

The vehicle position measuring transmitter 10 has a GPS receiver 11 and a transmitter 12. GPS receiver 11
Is a predetermined number (4 in the figure) of GPS satellites S ₁ ...
The signal is received from S _4, and the position, speed, etc. of the mounted vehicle are obtained. The GPS receiver 11 indicates that the position of the vehicle is 1
It is a device that can measure continuously with an accuracy within 00m.
The vehicle position obtained by the PS receiver 11 is, for example, the latitude
It is supplied to the transmitter 12 as a value such as longitude. Transmitter 12
Transmits the output of the GPS receiver 11 to the vehicle position reception display 20 by radio waves or infrared rays, for example.

The vehicle position reception display 20 includes a receiver 21,
It is composed of a display controller 22, a page reader 23, a map data memory 24 and an LCD display 25. The receiver 21 to the map data memory 24 are housed in the frame F of the LCD display 25, as shown in FIG. The frame F is a structure for strengthening the LCD display 25, and is made of, for example, plastic. When the vehicle position reception display 20 is used, it is superimposed on the corresponding page of the map book 30 as shown in FIG.

The receiver 21 receives the information transmitted from the transmitter 12. The receiver 21 receives and demodulates the information transmitted from the transmitter 12, that is, the vehicle position represented by latitude and longitude, and outputs the demodulated information to the display controller 22. The display controller 22 generates the marker P on the transparent screen of the LCD display 25 based on the information output from the receiver 21 in the form of digital data.

The coordinate value of this marker P (LAT _P , LON
_In order to generate _P ), in addition to the output of the receiver 21,
Display scale on the transparent screen of the CD display 25 and LC
It is necessary to know the coordinate value of the predetermined point on the D display 25. The display controller 22 obtains these pieces of information from the page reader 23 and the map data memory 24.

Here, as the map book 30, it is assumed that each page has the same scale. Further, it is assumed that the page number (“35” in the figure) is written on each page of the map book 30 in the form of a barcode or the like. The page reader 23 uses the frame F so that the page number can be read.
It is stored inside. The display controller 22 reads the page number from the corresponding page of the map book 30 by the page reader 23, and refers to the map data memory 24 using this page number. In the map data memory 24, the coordinate value (LAT ₀ , LON ₀ ) of the lower left point of each page is associated with the page number of each page.
Is remembered. The coordinate values (LAT ₀ , LON ₀ ) are latitude / longitude values. The display controller 22 uses this coordinate value (L
AT ₀ , LON ₀ ) and a predetermined scale of each page of the map book 30, the information obtained from the receiver 21, that is, the own vehicle position indicated by the latitude and longitude, is used as the coordinate value of the marker P ( LAT _P , LON _P ). The display controller 22 displays on the transparent screen of the LCD display 25,
The marker P is generated at the position represented by these coordinate values (LAT _P , LON _P ). Specifically, on the transparent screen of the LCD display 25, coordinate values (LAT _P , LO
The marker P is generated by applying a voltage to the electrode corresponding to N _P ).

By such an operation, the user can read the vehicle position from the corresponding page of the map book 30.
That is, as described above, the vehicle position reception display 20 is superimposed on the corresponding page of the map book 30, so that the LCD
By reading the position of the marker P via the transparent screen of the display 25, it is possible to know which road the vehicle is traveling on, at which intersection, and so on.

The vehicle position measuring transmitter 10 is not limited to the configuration using the GPS receiver 11 as shown in FIG. For example, as shown in FIG. 4, a vehicle speed meter 13, a direction sensor 14, a processing unit 15, and a transmitter 16
May be provided. In the case of such a configuration, the vehicle speed meter 13 detects the vehicle speed, and the azimuth sensor 14 detects the traveling direction of the vehicle. Processing unit 15
Calculates the vehicle position on the basis of the outputs of the vehicle speedometer 13 and the direction sensor 14, and outputs this to the transmitter 16. Transmitter 16
Transmits the output of the processing unit 15 to the vehicle position reception display 20. In this case, the GPS satellite S ₁
Even if no signal is obtained from S ₄ to S _4, positioning can be performed and the driver's position of the vehicle can be known to the driver of the vehicle.

When a map book whose pages are not at the same scale is used as the map book 30, the map data memory 24
The coordinate values (LAT ₀ , LO
The scale of each page other than N ₀ ) may be stored. Alternatively, the display controller 22 may calculate the scale of each page. In this case, the coordinate value of another point besides (LAT ₀ , LON ₀ ) is required on each page of the map book 30. That is, the map data memory 24 may be referred to by the page number read by the page reader 23, and the coordinate values stored in association with two points for each page may be read by the display controller 22.

If the coordinate values (LAT ₀ , LON ₀ ) and the scale are written on each page of the map book 30 instead of the page numbers, the calculation in the display control unit 22 is performed without using the map data memory 24. It is possible to directly obtain such information required for the page reader 23.

[0038]

As described above, according to the present invention,
In addition to the vehicle position obtained by the vehicle position reception display by positioning, the vehicle position on the map is calculated based on the coordinate values of the predetermined points on the map and the scale of the map, and this is displayed on the transparent screen. Since the predetermined point is displayed as the reference point, it is possible to notify the driver of the vehicle etc. of the vehicle position by superimposing the vehicle position on the map information without using a large and expensive display means such as a CRT. Further, since the information to be stored is sufficient as the coordinate value of a predetermined point on the map, it is not necessary to use a storage means having a huge storage capacity, such as a CDROM. Therefore, it is possible to realize a system having a small size, a simple and inexpensive structure without using a CRT, a CD player, etc., and it is possible to eliminate difficulties such as a mounting place and improve usability.

Further, when the own vehicle position measurement transmitter and the own vehicle position reception display are wirelessly connected, the own vehicle position reception display can be freely carried and can be used in the back seat of the vehicle or outside the vehicle. .

Further, when the own vehicle position positioning transmitter is configured to use the GPS receiver, the highly accurate own vehicle position positioning result by the GPS receiver can be used by the user. Further, when the vehicle speed meter and the direction sensor are provided, the positioning result can be obtained even when the signal cannot be received from the GPS satellite.

Further, according to the present invention, it is possible to realize each of the above effects by using a map book which is widely used.
In this case, the information necessary for obtaining the own vehicle position on the map on the own vehicle position reception display, that is, the coordinate value of a predetermined point on the map and the scale of the map are read by a reading means such as a bar code reader or a page number. It can be obtained with a simple configuration by using a memory or the like that stores and in association with predetermined information. Various types of information can be obtained by setting information described on each page of the map book and information stored in the memory.

Further, by accommodating the circuits around the display unit in the frame of the display unit, the device structure becomes simple and the handling becomes easy. Further, when the position of the vehicle is displayed as a marker on the transparent screen of the display, the driver of the vehicle can read the position of the vehicle appropriately, and when the position is a transparent liquid crystal display, the display is concerned. Can be configured inexpensively and simply.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a vehicle positioning display system according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an outer shape of a vehicle position reception display in this embodiment.

FIG. 3 is a conceptual diagram showing a usage mode of a vehicle position reception display in this embodiment.

FIG. 4 is a block diagram showing another example of the configuration of the vehicle position positioning transmitter.

[Explanation of symbols]

10 Vehicle Position Positioning Transmitter 11 GPS Receiver 12 Transmitter 13 Vehicle Speedometer 14 Direction Sensor 15 Processing Unit 16 Transmitter 20 Vehicle Position Receiving Display 21 Receiver 22 Display Controller 23 Page Reader 24 Map Data Memory 25 LCD Display Device 30 Map book S _{1 to} S ₄ GPS satellite F LCD display frame (LAT ₀ , LON ₀ ) Bottom left point of map book (LAT _P , LON _P ) Marker P position on transparent screen of LCD display P Marker

Claims (13)

[Claims] 1. A vehicle position measuring transmitter that measures and transmits the position of the vehicle, a map of a road or the like having a predetermined scale such as a lower left point as a reference point, and a vehicle transmitting from the vehicle position measuring transmitter. The position is received, the own vehicle position on the map is obtained based on the received own vehicle position, the coordinate value of the predetermined point and the scale of the map, and the obtained own vehicle position is displayed on the transparent screen of the same scale as the map. An automobile positioning display system, comprising: a vehicle position reception display that displays a fixed point as a reference point. 2. The vehicle positioning display system according to claim 1, wherein the vehicle position positioning transmitter and the vehicle position reception display are wirelessly connected by infrared rays or the like. 3. A GPS receiver for receiving a signal from a predetermined number of GPS satellites to determine a vehicle position, and a transmitter for transmitting the vehicle position determined by the GPS receiver to a vehicle position reception display. A vehicle-positioning transmitter, comprising: the vehicle-positioning display system according to claim 1 or 2. 4. A vehicle speed meter for detecting a vehicle speed, an azimuth sensor for detecting a traveling direction of the vehicle, a means for calculating a vehicle position based on the detected vehicle speed and a traveling direction of the vehicle, and A transmitter for transmitting the obtained vehicle position to a vehicle position reception display, which is used in the vehicle positioning display system according to claim 1 or 2. 5. A receiver for receiving the own vehicle position from a own vehicle position measuring transmitter, and a display control for obtaining the own vehicle position on the map based on the received own vehicle position, the coordinate value of the predetermined point and the scale of the map. And a display device for displaying the obtained vehicle position on the transparent screen of the same scale as the map, using the predetermined point as a reference point, which is used in the vehicle positioning display system according to claim 1 or 2. A vehicle position reception indicator characterized by the above. 6. The vehicle position reception display according to claim 5, wherein reading means for reading page numbers from a map book of the same scale for all pages, and the predetermined point of each page of the map book are associated with the page number. A vehicle position reception display, comprising: a memory for storing coordinate values, wherein the display controller reads the coordinate values of the predetermined points from the memory based on the page number read by the reading means. 7. The vehicle position reception display according to claim 5, wherein reading means for reading a page number from a map book with an arbitrary scale for each page and the page number of each page of the map book are associated with each other. A vehicle storing a coordinate value and a scale of a predetermined point, wherein the display controller reads the coordinate value and the scale of the predetermined point from the memory based on the page number read by the reading means. Position reception indicator. 8. The vehicle position reception display according to claim 5, wherein reading means for reading a page number from a map book with an arbitrary scale for each page, and each page of the map book are associated with the page number. A memory for storing coordinate values of a predetermined point at a plurality of places such as upper right and lower left, and the display controller reads and reads the coordinate values of the predetermined point from the memory based on the page number read by the reading means. A vehicle position reception display, wherein the scale of the page is calculated based on the coordinate values of a plurality of points. 9. The vehicle position reception display according to claim 5, further comprising a reading unit for reading the coordinate value and scale of the predetermined point from a map book of an arbitrary scale for each page. Reception indicator. 10. The vehicle position reception display according to claim 6, wherein the information read from the map book by the reading means is recorded as a bar code on the map, and the reading means uses a bar code reader. A vehicle position reception display characterized by including. 11. The vehicle position reception indicator according to claim 5, wherein a circuit around the indicator is housed in a frame of the indicator. 12. The vehicle position reception display according to claim 5, wherein the display unit displays the vehicle position on the map as a marker. 13. The vehicle position reception display according to claim 5, wherein the display is a transparent liquid crystal display.