JP2780463B2 - Vehicle traffic information display - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traffic information display device for a car or the like, and more particularly to a traffic information display device for a car that displays a destination name and an orientation of an arbitrary road point. is there.

[Conventional technology]

FIGS. 10 and 11 are diagrams showing the entire configuration of a navigation system with a road map switching function disclosed in, for example, Japanese Patent Application Laid-Open No. 60-165511, and diagrams showing examples of displayed maps. , 501 is a microprocessor for controlling the operation of the entire system, 502 is a vehicle speed pulse sensor and a geomagnetic direction sensor for detecting the speed and direction of the vehicle, and 503 is an operation switch composed of a plurality of switches, such as an initial setting of the navigator. The instruction is transmitted to the microprocessor 501. 504 is a sensor 502 and an operation switch 50
An input / output control LSI 505 for inputting a signal obtained from 3 to the microprocessor 501 is a cassette tape as external storage means for storing a road map (standard and enlarged maps) of a specific area. 506 is a cassette tape 505
CMTC, a small magnetic tape device control LSI connecting the microprocessor 501 and the microprocessor 501, 507 is a volatile memory (RAM) used temporarily for storing data during the operation and control operation of the microprocessor 501, and 508 is a microprocessor 501
Is a non-volatile memory in which programs for various control operations and arithmetic processing operations are stored.

509 is an LSI (CRTC) that is the core of the circuit that transmits various display data such as road maps to the color CRT 515, and 510 is a color
A multiplexer having a function of switching connections between memories 511 to 512 storing contents to be displayed on the CRT 515, the microprocessor 501, the CRTC 509, and the like. 511 is a color CRT
Specified road data used for display of 515
This is a graphic memory that is selected and stored via the CMTC 506 under the control of the microprocessor 501, and also stores a traveling locus.

512 is a character memory dedicated to character data for displaying character information on the color CRT 515, 513 is alphanumeric, symbol,
A character generator that stores character information such as katakana and kanji in a pattern, a video controller 514 that performs level conversion and waveform shaping processing that meets the required specifications of the color CRT 515, and a 516 that is grounded on the CRT 515 color CRT It is a transparent touch panel switch.

601 is an example of a map displayed in a normal case, 602 is an example of an enlarged map obtained by enlarging the normal display map 601, and 603 is an enlarged map 602.
3 is an example of a detailed map further enlarged.

Next, the operation will be described. First, the operator operates the operation switch 503 to select a desired map. The microprocessor 501 searches for the corresponding map from the cassette tape 505 via the CMTC 506 and stores the map data in the graphic memory 511.
And display it on the color CRT515. Next, the operator selects the current position using the operation switch 503.
The display example of the map selected in this way is the standard map 601, which is an example of a map that is normally displayed. In addition, the character example displayed in the frame at the lower left indicates that an enlarged map corresponding to the current vehicle position is prepared in the standard map, and the enlarged map 602 and the enlarged map are obtained by touching this portion with a fingertip or the like. Switch the display screen to 603. Magnified map 60
The lower left corner of 2 clearly shows that there are standard and enlarged maps that can be switched from this enlarged map. Detailed map 603
Is switched and displayed when a part of the standard map 601 or the enlarged map 602 specified by the frame “details” is touched. On the contrary, the detailed map 603 or the enlarged map 602
If you touch inside the “standard” frame, you can go to standard map 601, detailed map 6
The state of switching to the enlarged map 602 by touching the inside of the “enlarged” frame of 03 is shown.

[Problems to be solved by the invention]

Since the conventional navigation system is configured as described above, there is a problem that when a normally displayed map is displayed on a small display generally mounted on a vehicle, the map is difficult to see because the map is difficult to see finely. Also, if a standard map, an enlarged map, a detailed map, and a map with stepwise detail are prepared so that the map can be easily viewed, the driver will need to switch the map as required, which will cause problems such as hindering driving. was there.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and displays, in a simplified manner, information on the current location or an arbitrary road point, and has good visibility without hindering traveling. It is an object of the present invention to obtain an automobile traffic information display device capable of displaying a message.

[Means for solving the problem]

A vehicle traffic information display device according to the present invention includes a destination information storage unit that stores a name indicating a predetermined point and a geographical position of the predetermined point, a unit that detects a position and a traveling direction of the own vehicle, and a vehicle. Calculating means for calculating an azimuth from a position to a predetermined point from a geographical position; means for searching for a point located in a predetermined direction with respect to the traveling direction of the own vehicle from a destination information storage means; Display means for displaying a symbol indicating the direction of the vehicle and a symbol indicating an azimuth to a point in a predetermined direction with respect to the traveling direction of the vehicle, together with a name indicating the predetermined point.

(Operation)

The vehicle traffic information display device according to the present invention retrieves a point located in a predetermined direction with respect to the traveling direction of the vehicle from the destination information storage means, and searches for a geographical location of the predetermined point stored in the destination information storage means. The direction from the upper position to the predetermined point is calculated, and the display means displays the name and the direction of the predetermined point together with the symbol indicating the arbitrary point, so that it is easy to express with a small amount of data and good visibility. Display.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing a main display example of a vehicle traffic information display device according to an embodiment of the present invention. In FIG.
Reference numeral 1 denotes a sign indicating the position of the vehicle, 2 to 5 indicate a destination name, and 6 to 9 indicate direction symbols indicating respective directions of the destination names 2 to 5 with respect to the traveling direction to the destination name.

FIG. 2 is an example of a map showing real geographical information. In FIG. 2, reference numeral 15 denotes the position of the vehicle and the traveling direction on the map.

FIG. 3 is an overall configuration diagram of a vehicle traffic information display device according to one embodiment of the present invention. In the figure, 21 is an image display means for displaying images of characters, symbols, patterns, etc.,
Reference numeral 22 denotes traffic information receiving means for receiving traffic information, and reference numeral 23 denotes input operation means for inputting an arbitrary road point and its traveling direction, for example, for switching images, selecting traffic information, and the like. 24 is a vehicle position / azimuth detecting means for recognizing the current position of the vehicle and its traveling direction, and 25 is a map data storing means for storing the positional relationship of the destination with respect to an arbitrary road position as data. A map in which the name of the destination and its position with respect to the road point and the traveling direction (in the case of this embodiment), or the road direction in the predetermined area including the land and the direction and the name of the destination with respect to the direction information are converted into data. It is stored as data. 26 extracts necessary information from the map data storage means 25 with respect to the arbitrary road point and its traveling direction, and the destination name and its direction (in the case of this embodiment) with respect to the arbitrary road point and the traveling direction, or distance,
Alternatively, it is control means for controlling the image display means 21 so that both are displayed on the image display means 21.

FIG. 4 is a flow chart of the main part for explaining a schematic main operation of this embodiment.

FIG. 5 is a diagram showing a storage format of the map data stored in the map data storage means 25. In FIG. 5, reference numeral 31 denotes the whole map data, for example, a rectangular area having one side of 10 km is set as an area unit. It is composed of an area information group and map area management information for managing this area information group. Reference numeral 32 denotes a configuration of one area information, which includes a group of land information such as a land name included in the area and land information management information for managing the land information group. Reference numeral 33 denotes a configuration of one piece of land information, and a land code indicating a land name such as a prefecture name or a municipal name, a land code such as an airfield symbol or a main route number, and a geographical code of the land code. It consists of an X-coordinate value and a Y-coordinate value (X-Y coordinate value) of XY coordinates representing the upper position.

Next, the operation of this embodiment will be described with reference to FIGS. For example, it is assumed that the vehicle is currently traveling in the actual geographical location shown in FIG. In the vehicle traffic information display device, the own vehicle position / azimuth detecting means 24 detects the absolute position coordinates of the running vehicle and the traveling direction thereof (step S1). Based on the position coordinates, the control means 26 checks the map area management information of the map data 31 stored in the map data storage means 25, and determines whether or not the current area has been changed from the previous time (step S2) If the area is not changed, proceed to step S4,
If the area is changed, the area information including the own vehicle position is searched (step S3).

Next, based on the XY coordinate values of the own vehicle position and the traveling direction information, the control means 26 generates area information including the own vehicle position.
Read out the land location information management information of 32 and the land location code in the land location information 33 and the XY coordinate values thereof from the map data storage means 25,
From these, the azimuth relationship of the destination information with respect to the own vehicle position coordinates and the own vehicle traveling direction is calculated, and with respect to the traveling direction of the own vehicle position,
A search is made for ground data in the right, left, right front, and left front directions (step S4).

Next, the control means 26 controls the image display means 21 to display the relationship between the own vehicle position and the destination information as shown in FIG. 1 (step S5). Step after step S5
Return to S1. The land code of the land information searched in this example includes character codes of “Amagasaki”, “Takarazuka”, “Toyonaka”, and “Kawanishi”.

Further, the information such as traffic congestion received by the traffic information receiving means 22 is, as for the traffic information related to the displayed road, as shown in the display example of FIG. 6, as shown in the display example of FIG. A superimposed image 10 is displayed on a suitable image using symbols or the like.

In the above embodiment, the vehicle position and the direction of the destination with respect to the traveling direction are displayed. However, regardless of whether or not the vehicle position is related, an arbitrary road position and the traveling direction can be input from the input operation means 23. By performing an input operation, an arbitrary road position and the direction of the destination with respect to the traveling direction can be displayed on the image display means 21 in the same manner as in the above embodiment, as in FIG.

Further, in the above display example, the relationship between the vehicle position and the destination information is represented using an image expression as illustrated,
The road in which the own vehicle position is present may be displayed, and the image expression as shown in FIG.

In FIG. 7, reference numeral 41 denotes a sign indicating the road on which the own vehicle position is present, 42 denotes a sign indicating the own vehicle position, 43 to 47 indicate a destination name, 48 to 51 indicate a destination name 43, 44, It is a direction sign display indicating the respective directions to the 46,47 destination names.
However, the location name display 45 is the location information of the road corresponding to the road symbol display 41.

FIG. 8 is a view showing a display example of a vehicle traffic information display device as a second embodiment of the present invention. In FIG.
Is a symbol display indicating the position of the own vehicle, 63 to 67 are display of land name,
68 to 71 are direction sign displays indicating the directions to the destination name display 63, 64, 66, 67, respectively, and 72 to 76 are the destination name display from the own vehicle position of the own vehicle position display 62 to the destination name display 63 to 67. It is a symbol display showing the distance to each of the positions. This distance is X-
It is estimated by the control means from the Y coordinate value and the XY coordinate value of the destination name.

As in the display example shown in FIG. 8, the distance between the own vehicle position and the road where the own vehicle position is present to the position represented by the land information are displayed together with the direction of the own vehicle position and the direction of the ground information. Even when displayed together, the main operation of the present invention can be realized, and the same effect as in the first embodiment can be obtained.

FIG. 9 is a diagram showing a display example of a vehicle traffic information display device as a third embodiment according to the present invention. In FIG. 9, reference numeral 81 denotes a symbol display indicating a road where an arbitrary point exists.
82 indicates the line number of the road, 83 to 87 indicate the destination name, 88
Numerals 91 indicate direction symbol indications indicating directions to the respective destination names in the destination name displays 83, 84, 86, 87. As described above, even when the relationship between the road on which the arbitrary point exists and the destination information is displayed, the main operation of the present invention can be realized, and the same effect as that of the above embodiment can be obtained.

In this case, the map data storage means 25 shown in FIG. 3 stores the data of the route number and the road data of the route as a function, a coordinate range or a coordinate value. The control means 26 refers to the road data in the map data storage means 25 from the XY coordinate values of the own vehicle position obtained from the own vehicle position / azimuth detecting means 24 and finds the route number, as shown in FIG. The image is displayed on the image display means 21.

Also in the case of displaying the road and the own vehicle position as shown in FIGS. 7 to 9 of the above embodiment, the XY coordinate values of an arbitrary road position input from the input operation means 23 shown in FIG. It can also be displayed assuming the own vehicle position.

Further, in the above-described embodiment, as the map data, data obtained by converting only the positional relationship of the destination information is used.
As long as the map data includes information on the positional relationship such as the azimuth and distance of the destination information, the main operation of the present invention can be realized, and the same effect as in the above embodiment can be obtained.

For example, the map data storage means stores the X-Y
Instead of storing the coordinate values, the road information of the predetermined area including the land indicated by the land code and the direction and / or distance of the land indicated by the land code are stored in association with the direction. It is good. Then, if there is road information and direction in the map data storage means matching the arbitrary road position and its traveling direction, the land code corresponding to the road information and its direction and / or distance are read out from the map data storage means and displayed. can do.

〔The invention's effect〕

As described above, according to the present invention, a point located in a predetermined direction with respect to the traveling direction of the own vehicle is searched, and a predetermined point is determined from the geographical position of the predetermined point stored in the destination information storage means. By calculating the azimuth to the point, the display means displays the name and azimuth of the predetermined point together with the symbol indicating the arbitrary point, so that the amount of data to be stored can be reduced, and the geographical area with good visibility can be obtained. Since the information can be displayed and the amount of data to be processed is reduced, and the apparatus can be simplified, the processing speed can be improved, the responsiveness can be improved, and there is an effect that the operation is not hindered.

[Brief description of the drawings]

FIG. 1 is a diagram showing a display example of a vehicle traffic information display device according to an embodiment of the present invention, FIG. 2 is a diagram showing an example of a map showing real geographic information, and FIG. FIG. 4 is a main part flowchart showing a schematic operation of the above embodiment, and FIG. 5 shows an example of a storage format of map data by a map data storage means. FIG. 6 is a diagram showing a display example in which an example of traffic information is superimposed on the display example of FIG. 1, and FIG. 7 is another table of a vehicle traffic information display device as a first embodiment. FIG. 8 is a diagram showing one display example of the device according to the second embodiment, FIG. 9 is a diagram showing one display example of the device according to the third embodiment, and FIG. Overall configuration diagram,
FIG. 11 is a diagram showing an example of a map displayed on a conventional device. In the figure, 1,42,62... Symbol indicating the vehicle position, 2-5,4
3-47,63-67,83-87 …… Destination name display, 6-9,48-51,
68 to 71, 88 to 91 ... direction sign display indicating the direction to the destination name, 21 ... image display means, 25 ... map data storage means,
26 ... Control means. In the drawings, the same reference numerals indicate the same or corresponding parts.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-224020 (JP, A) JP-A-63-95313 (JP, A) JP-A-2-6714 (JP, A) JP-A-1- 176913 (JP, A) JP-A-4-40596 (JP, A) JP-A-62-161980 (JP, A) JP-A-3-113312 (JP, A) JP-A-2-10210 (JP, A) JP-A-3-154529 (JP, A) JP-A-3-154526 (JP, A) JP-A-63-197986 (JP, A) JP-A-62-293617 (JP, A) (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G01C 21/00 G08G 1/0969 G09B 29/00

Claims (1)

(57) [Claims] A destination information storage means for storing a name indicating a predetermined point and a geographical position of the predetermined point; a means for detecting an own vehicle position and a traveling direction; Calculating means for calculating the azimuth to the point from the geographical position, and means for searching for a point in a predetermined direction with respect to the traveling direction of the vehicle from the destination information storage means,
Display means for displaying a symbol indicating the position of the vehicle and displaying a symbol indicating a direction to a point in a predetermined direction with respect to the traveling direction of the vehicle together with a name indicating the predetermined point. Traffic information display device for automobiles.