JPH07134797A - Travelling position display device - Google Patents

Abstract

PURPOSE:To obtain the required reduction scale by single operation by switching the reduction scale of the map to be displayed on a display by one step. CONSTITUTION:The device is provided with a reduction scale register means 16 registering the reduction scale selected by the user from among the prepared reduction scale steps, reduction scale key display means 17 displaying the touch key switching the reduction scale based on the registered reduction scale step, reduction scale execution means 18 switching the reduction scale of the map according to the reduction scale selected by the displayed touch key. The required reduction scale is selected by single operation from among touch keys switching the displayed reduction scale by one operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling position display device for displaying the current position of an automobile or the like on a display device together with a map.

[0002]

2. Description of the Related Art FIG. 6 shows an outline of a conventional vehicle-mounted traveling position display device. In FIG. 6, reference numeral 61 is an azimuth sensor, and this azimuth sensor 61 uses a geomagnetic sensor for detecting the absolute traveling azimuth of the automobile and an optical gyroscope for detecting the relative traveling azimuth of the automobile. Reference numeral 62 is a distance sensor that generates a pulse corresponding to the number of rotations of the wheel, and 63 is various sensor signals such as an ON / OFF signal of a brake switch and a parking switch, and a power supply voltage monitoring signal. 64 is a sensor signal processing unit that processes sensor signals from the direction sensor 61 and the distance sensor 62, and 65 is a GPS (Global Position).
This GPS receiver 65 is capable of obtaining the position (latitude, longitude) of the receiving point by receiving and calculating radio waves transmitted from a plurality of satellites. Reference numeral 66 is a CD-ROM drive, and this CD-ROM drive 66 reads out map data from a CD-ROM 67 in which map data is recorded. Reference numeral 68 denotes a display / operation unit installed in the passenger compartment. This display / operation unit 68 is a liquid crystal display 68A for displaying a map and the current traveling position, direction, etc. of the vehicle,
The touch panel 68B is provided on the front surface of the liquid crystal display 68A. The touch panel 68B has a switch for instructing enlargement or reduction of the display map, a switch for instructing a route search, and a place name displayed on the liquid crystal display 68A. It is equipped with a switch to select the destination from the inside. Reference numeral 69 denotes an apparatus main body, and the apparatus main body 69 is installed in a trunk room or the like.

Next, the structure of the apparatus main body 69 will be described. Reference numeral 70 is a CPU (central processing unit) that performs various calculations, 71 is a ROM (program ROM) that stores programs for various calculations performed by the CPU 70, 72 is a direction sensor 61, a distance sensor 62, a GPS receiver 65,
Data from the CD-ROM drive 66 and the CPU 70
A memory (D-RAM) for storing the calculation result and the like at 73,
Is a backup memory (S-) for holding necessary data even when the power supply to the apparatus main body 69 is stopped.
RAM), 74 is a memory (kanji, font ROM) in which patterns such as characters and symbols to be displayed on the liquid crystal display 68A are stored, and 75 is for forming a display image based on map data or current position data of the vehicle. The image processor 76 is a map ROM, current position data and kanji, and a font ROM 7 output from the image processor 75.
A memory (V-RAM) for memorizing an image to be displayed on the liquid crystal display 68A by synthesizing Chinese characters and fonts such as town names and road names output from No. 4, and 77 for converting the output data of the V-RAM 76 into color signals. The RGB conversion circuit outputs the converted color signal from the RGB conversion circuit 77 to the liquid crystal display 68A. Reference numeral 78 is a communication interface. On the liquid crystal display 68A, as shown in FIG. 7, a surrounding map of the current position of the own vehicle is displayed together with a town name, an intersection name, a road name, etc., and the current position and the traveling direction of the own vehicle are shown in the displayed map. The own vehicle mark 79 is displayed. 80 is a scale bar.

FIG. 8 shows the format of map data stored in the CD-ROM 67. 81 is a disc label, 82 is drawing parameters, 83 is leaf management information, 8
Reference numerals 4 and 85 are map leaves, in which background data, character data, road data, etc. are stored, and data for each unit map obtained by dividing a topographic map of Japan by latitude and longitude is stored. There is. Map leaves are set from map leaves 84 (level 2) that roughly describe a wide region to map leaves 85 (level 0) that describe a narrow region in detail, and each map leaf describes a map that describes the same region. It is composed of display levels A, B, and C. Map display levels A, B, C are B, B rather than A
C is described in more detail. Each map display level A, B, C is composed of map display level management information and a plurality of units. A unit describes a divided area obtained by dividing the area of each map display level into a plurality of areas, and each unit includes a unit header, a character layer, and
It is composed of a background layer, a road layer, and an option layer. Place names, road names, facility names, etc. displayed on the map are recorded in the character layer, data for drawing roads, facilities, etc. are recorded in the background layer, and the road layer is as shown in FIG. In the table, data on coordinate points (nodes) and lines (links) that describe roads including intersections, for example, node numbers of nodes, latitude, longitude, link numbers of links, link distances, etc. are stored. In FIG. 9, circles (∘) indicate nodes, and lines between the nodes indicate links. In addition, the black circle (●) of the node number: 4 indicates an intersection node. The data recorded in the road layer is used as road network information for map matching, not directly involved in the data map display.

In FIG. 6, the output of the azimuth sensor 61 and the output of the distance sensor 62 are output to C via the sensor processing unit 64.
It is sent to the PU 70. The CPU 70 calculates the current position of the vehicle and obtains the latitude and longitude of the current position. Further, the current position is corrected based on the data from the GPS receiver 65. Based on the present position thus obtained, the map data of the unit corresponding to the present position is stored in the CD-ROM drive 66 by the CD-ROM drive 66.
The map data is read from 67 and stored in the memory (D-RAM) 72 via the communication interface 78. A part of the map data stored in the D-RAM 72 is read by the CPU 70, and the image processor 75
Is converted into image data and written in the V-RAM 76. The image data stored in the V-RAM 76 is RGB
The liquid crystal display 68 is converted into color signals by the conversion circuit 77.
It is sent to A and a map of a predetermined range centering on the current position is displayed. Further, if the map data read from the D-RAM 72 includes character codes and symbol codes, patterns corresponding to these character codes and symbol codes are Chinese characters,
Since it is read from the font ROM 74, characters such as place names and symbols such as schools are displayed on the liquid crystal display 68A together with the map. In addition, the current position displayed on the liquid crystal display 68A is sequentially changed based on the traveling speed and traveling direction that are sequentially obtained as the vehicle travels.

Next, the map display operation of the above conventional example will be described with reference to FIG. As shown in FIG. 10, in step 101, the input of the scale of the map displayed on the liquid crystal display 68A is received. In step 102, it is determined whether the input is an enlargement request or a reduction request. Depending on the case, the scale is increased by one step in step 103 or the scale is decreased by one step in step 104. Next step 10
In step 5, the scale bar is displayed, and in step 106 it is determined whether the time has elapsed since the last input from the scale key.
If it is determined that the fixed time has elapsed, the scale is determined in step 107. In step 108, the map display data of the scale determined in this way is stored in the CD-ROM.
Read from 67. Based on the data read from the CD-ROM 67, in step 109 the liquid crystal display 6
Draw a map on 8A. Next, in step 110, the CD-R
The road network data recorded in the road layer is read from the OM 67, the position and the direction of the own vehicle are determined from the road network data and the current position data calculated by the CPU 70 in step 111, and the liquid crystal is displayed in step 112. The vehicle mark is displayed on the map displayed on the display 68A.

[0007]

However, in the above-mentioned conventional example, there is a scale switching step according to the number of map scales incorporated in the apparatus, and as shown in FIG. 7, a scale bar 80 is provided on the liquid crystal display 68A. Although displayed, if multiple scales are prepared, the touch switch is operated until the map of the desired scale is selected in the scale switching operation for each step by the wide area switching touch switch 68B. I had to hold it down. Therefore, it was necessary to confirm the scale such as visual recognition.

As described above, in the conventional example, since it is not possible to immediately select an arbitrary scale, the scale switching operation of the displayed map takes time for confirmation and the like.
There was a problem in terms of operability during driving.

The present invention solves the above-mentioned conventional problems. Instead of switching the scale reduction of the map displayed on the display step by step, the map display of a desired scale is performed by a single operation. An object of the present invention is to provide a traveling position display device capable of performing the above operation.

[0010]

In order to achieve the above object, the present invention provides a vehicle position detecting means for detecting the vehicle position and a map data reading means for reading out map data from a storage medium storing a place name index. And display means for displaying the read map data and detected vehicle position in association with each other, operation input means for inputting a destination or a scale instruction, and dynamically searching a route to the destination. A route search means, a scale registration means for registering a scale selected by the user from the scale steps prepared in advance, a scale key display means for displaying a scale switching touch key based on the registered scale step, It is provided with a scale executing means for switching the scale of the map according to the scale selected by the displayed touch key and a control means for controlling each means.

[0011]

According to the present invention, according to the above construction, the desired scale group selected from all the scales is registered by the scale registration means, and each of the registered scales is individually touched for changing the scale. Are displayed on the display means in correspondence with each other, and the scale of the displayed map is switched by operating this touch key, and the desired scale can be immediately selected.

[0012]

EXAMPLES An example of the present invention will be described below.
FIG. 1 is a schematic block diagram of a traveling position display device according to an embodiment of the present invention. In FIG. 1, reference numeral 11 is a vehicle position detecting means for detecting the vehicle position, and includes an azimuth sensor, a distance sensor, a GPS receiver and the like. Reference numeral 12 denotes map data reading means for reading map data from a storage medium storing a place name index, which is realized as a CD-ROM drive for reading map data stored in a CD-ROM. 1
Reference numeral 3 is a display means for displaying the read map data and the detected vehicle position in association with each other, and 14 is an operation input means for inputting a destination or a scale instruction. It is realized by the touch panel arranged on the front surface. Reference numeral 15 is a route searching means for dynamically searching for a route to a destination, which is executed by the CPU calculating based on a program stored in the ROM. 16 is a scale registration means for registering the scale selected by the user from the scale steps prepared in advance, 17 is a scale key display means for displaying a scale switching touch key based on the registered scale step, and 18 is displayed. Scale reduction means for switching the scale of the map according to the scale selected by the touch key, and 19 is a control means for processing each signal in the device to display the traveling position of the vehicle on the display means 13.

Next, the operation of the above embodiment will be described. Since the overall traveling position display processing of the device is the same as the conventional example, the scale switching processing will be described here. First, the scale registration process by the scale registration unit 16 will be described with reference to FIG. It should be noted that the three detailed scales with high frequency of use, such as 1 / 1280,000, 1 / 640,000, and 160,000, are preset to the touch keys, and the user sets other scales. . First, a menu screen for scale registration as shown in FIG. 3 is displayed (step 21). From this menu screen, the user inputs a desired scale using the enlargement key 32, the enter key 33, and the reduction key 34 of the scale setting key 31 (step 22). The scale setting key 31 input next is the enlargement key 32 or the enter key 3
It is determined whether it is 3 or the reduction key 34 (step 23). In the case of the enlargement key 32, the display magnification is enlarged by one step (step 24), the display of the scale bar display 35 is changed (step 25), and the process returns to step 22. When the input key is the reduction key 34 (step 26), the display magnification is reduced by one step (step 27), and the reduction bar display 3
The display of 5 is changed (step 25), and the process returns to step 22. If the entered key is the confirmation key 33, the scale registration confirmation process is performed (step 28), and one scale registration process is ended.

Next, the scale changing process will be described with reference to FIG. First, it is determined whether or not the scale change mode is the scale value based on the touch key preset by the scale registration process (step 41). If the scale is not registered, as in the conventional example, the input of the scale change key is accepted (step 42), the desired scale is selected and displayed in the same manner on the map, and the scale change key is deleted (step 42). Steps 43-50). When the input touch key is registered as a scale, the scale key display means 17 displays the scale change display screen shown in FIG.
The display screen shown in is displayed, and the scale switching touch key 55 registered for scale is displayed (step 51). When the user selects and inputs a desired scale from the scale switching touch keys 55 (step 52), the scale executing means 18 changes the display scale of the map to the input scale and displays it (step 53), and the screen is displayed. The scale bar is displayed above (step 54).

As described above, according to the above-described embodiment, rather than changing the map scale for each step, a scale that is frequently used is registered in advance and selected from the scales. Can be done

[0016]

According to the present invention, as is apparent from the above-described embodiment, the scale registration means for registering the scale selected by the user from the prepared scale steps and the scale switching based on the registered scale step. Since the scale key display means for displaying the touch keys and the scale execution means for switching the scale of the map according to the scale selected by the displayed touch keys are provided, the desired scale can be set by one touch key operation. It can be obtained by operation, and the operability is improved, so that the safety of the driver during traveling can be improved.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of a traveling position display device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing scale registration processing according to an embodiment of the present invention.

FIG. 3 is a screen diagram of scale registration processing according to an embodiment of the present invention.

FIG. 4 is a flow chart of scale change processing according to an embodiment of the present invention.

FIG. 5 is a screen diagram of scale change processing according to an embodiment of the present invention.

FIG. 6 is a block diagram of a traveling position display device in a conventional example.

FIG. 7 is a screen diagram of scale change processing in a conventional example.

FIG. 8 is a format diagram of a CD-ROM storing map data.

FIG. 9 is a road data diagram stored in a CD-ROM storing map data.

FIG. 10 is a flowchart showing scale change processing in a conventional example.

[Explanation of symbols]

 11 vehicle position detection means 12 map data reading means 13 display means 14 operation input means 15 route search means 16 scale registration means 17 scale key display means 18 scale execution means

Claims (1)

[Claims] 1. A vehicle position detecting means for detecting a vehicle position, a map data reading means for reading map data from a storage medium storing a place name index, a read map data and a detected vehicle position. Are displayed in correspondence with each other, operation input means for inputting a destination or a scale instruction, route search means for dynamically searching for a route to the destination, and a user's scale step prepared in advance. Scale registration means for registering the selected scale, scale key display means for displaying the scale switching touch key based on the registered scale step, and map scale according to the scale selected by the displayed touch key. A traveling position display device comprising a scale executing means for switching between the above and each other, and a control means for controlling each of the above means.