JPH0346819B2 - - Google Patents

Description

[Detailed description of the invention] Technical field The present invention relates to an on-vehicle navigation device.

BACKGROUND ART As an in-vehicle navigation device, there is a device that inputs the current location of the vehicle as data or detects it with a current location detection device, etc., and displays a road map near the current location as an image on a CRT (cathode ray tube).

In such an in-vehicle navigation device, a plurality of road maps with different scales are usually prepared. However, there are problems in that the user does not know at what scale the road map should be displayed, and the operation is complicated due to the large number of operation points. There is also a device that can simultaneously display the locations of various related facilities such as hot springs and restaurants in the area on a road map using symbols or the like. However, when the scale of the road map is large, there is a problem in that even if the location of related facilities is displayed on the map, the actual location cannot be clearly understood.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an on-vehicle navigation device that improves operability and allows easy visual confirmation of the location of related facilities.

The in-vehicle navigation device of the present invention selects one of a number pattern for selecting an enlarged area of a road map and a type pattern of related facilities that can be displayed on a road map in a plurality of predetermined areas on a display screen. a touch sensor that is transparently formed on the display surface and generates different outputs for each of the plurality of areas; and a road map of the area that is enlarged according to the output of the touch sensor and displayed on the display. display driving means for displaying the type pattern according to the output of the touch sensor on the display in correspondence with the road map being displayed when the enlargement of the road map reaches a maximum; The number pattern is displayed in the area until the road map is enlarged to the maximum, and when the enlargement reaches the maximum, the type pattern is displayed.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

An on-vehicle navigation device according to an embodiment of the present invention shown in FIG. 1 is provided with a controller 1 consisting of a microprocessor computer. Controller 1 has VDP (video disc player) 2, CD (compact disc)
A ROM 3 and a CRT display circuit 4 are connected.
A video disk (not shown) on which video signals representing road maps of each area are recorded is preset in the VDP 2. CDROM3 shows the location information of each facility in each region using symbol marks.
CD on which RGB digital signals are recorded (not shown)
It is a player with a built-in. The CRT display circuit 4 has a superimpose function and outputs the video signal output from the VDP 2 and the CDROM 3.
The color CRT 6 is adapted to be compatible with any of the RGB digital signals, and when any of the RGB digital signals represents logic "1", the color CRT 6 is driven in accordance with the RGB digital signal.
A plurality of selection areas are predetermined in the upper and lower parts of the screen of the CRT 6, and a touch sensor 7 such as a transparent electrode is provided on the screen surface of the CRT 6 to detect the touch of a finger or the like to the selection area for each selection area. ing. A touch key input circuit 5 is connected to the output of the touch sensor 7, and the touch key input circuit 5 supplies a digital signal corresponding to the output level of the connected sensor 7 to the controller 1 as selection data. Further, connected to the controller 1 are a current location detection device 8 that detects the current location of the vehicle from signals transmitted from an artificial satellite and outputs the detected data, and a keyboard 9 for the user to input various commands.

Regarding the operation of the in-vehicle navigation device of the present invention having such a configuration, the controller 1 shown in FIG.
This will be explained according to the operation flow.

First, when the keyboard 9 is operated and a navigation operation command is supplied to the controller 1, it is determined whether the start determination flag F _S is "1" (step 21). Flag F _S is set at power-on”
Since it is initially set to 0", it is determined that F _S =0 immediately after the navigation operation command is generated. In this way,
If F _S =0, a numeric pattern output command is issued to the CDROM 3 (step 22). In response to this numerical pattern output command, the CDROM 3 outputs an RGB digital signal representing a numerical pattern from "1" to "6" to the CRT for selecting an area to be enlarged and displayed.
Supplied to the display circuit 4. Therefore, the numbers are displayed as images on the screen of the CRT 6, and each number is located in one of the above-mentioned selection areas. Next, the flag F _S is made equal to "1" (step 23).
After executing step 23, or if F _S =1 is determined in step 21, the current location data output from the current detection device 8 is read (step 24), and the read current location data is stored in the regional data map _M1. It is searched to see if it belongs to any of area data A ₁ to A _o , and the searched area data A _n is used (step 25). Next, controller 1
The previous step has already been taken from memory area A in
The regional data MA retrieved by executing step 25 is read out (step 26), and it is determined whether the regional data A _n and the regional data MA are equal or not (step 26).
27). If A _n ≠ MA, area data A _n is written to memory area A as new area data MA (step 28), and a map output command including area data A _n is issued to VDP 2 (step 29). ). In response to this map output command, the VDP 2 reads from the video disk a video signal representing the road map written at the address specified by the area data A _n . This video signal is supplied to the CRT display circuit 4, so that on the screen of the CRT 6, a road map including the current location is displayed between the upper and lower number display areas, that is, the selection area, as shown in FIG. 3a.

Next, the gear shift N is made equal to "0" (step
30), and the selection data is the touch key input circuit 5.
It is determined whether or not it is being supplied from (step 31). The numbers “1” to “6” appear on the CRT6 screen.
Or, when the user touches any one of the selected areas where the symbol mark of each facility is displayed,
An output of a level corresponding to the touched selection area is supplied from the touch sensor 7 to the touch key input circuit 5 and converted into selection data. If it is determined that this selection data is not supplied to the controller 1, it is determined whether a reset command has been issued from the keyboard 9 (step 32). If no reset command is issued, step 31 is executed again. If it is determined in step 30 that selection data is supplied, the selection data is read (step 33). Thereafter, it is determined whether the variable N is equal to "0" (step 34),
If N=0, the variable N is made equal to "1" (step 35). Then, one of the regional data maps M ₁₂ to M _2o is further searched according to the regional data A _n , and the retrieved data map is set as M _2n (step 36), and the read selected data is the regional data B in the data map M _2n . ₁ to _B6 is searched, and the searched area data is set as B _n (step 37). This regional data
A map output command containing B _n is issued to VDP2 (step 38). According to this map output command
The VDP 2 reads from the video disk a video signal representing the road map written at the address specified by the area data B _n . The scale factor of the road map represented by the video signal obtained by the area data B _n is larger than that of the road map represented by the video signal obtained by the area data A _n . Therefore, since the read video signal is supplied to the CRT display circuit 4, the part of the map shown in FIG. 3a (selected by the user) is displayed on the screen of the CRT 6, as shown in FIG. , for example, the region with the number "3") is displayed in an enlarged manner.

On the other hand, if it is determined in step 34 that N≠0, it is determined whether the variable N is equal to "1" (step 39). If N=1, the variable N is made equal to "2" (step 40), and the regional data map _M31 to _M3o is created depending on the regional data _Bn .
One of the data maps is retrieved and the retrieved data map is set as _M3o (step 41). step 33
The selected data read in is the data map.
It is searched to see if it corresponds to any of the area data C ₁ to C ₆ in M _3n and is taken as the searched area data C _n (step 42). A map output command including this area data C _n is issued to the VDP 2 (step 43). In response to this map output command, the VDP 2 reads from the video disk a video signal representing the road map written in the number specified by the area data C _n . The scale rate of the road map represented by the video signal obtained by the regional data C _n is the regional data
B is larger than that of the road map represented by the video signal obtained by _n . A symbol mark pattern output command is also issued to the CDROM 3 (step 44). In response to this symbol mark pattern output command, the CDROM 3 supplies an RGB digital signal representing the symbol mark pattern of each facility to the CRT display circuit 4 for facility selection. Since the CRT display circuit 4 drives the CRT 6 in response to the video signal and the RGB digital signal, the symbol mark of each facility is displayed as an image in the selection area on the screen of the CRT 6 as shown in FIG. Part of the road map shown in b (for example, the area with the number “5” selected by the user)
is further enlarged.

If it is determined in step 39 that N≠1, then in step 33 it is searched to see if the selected data read belongs to any of the facility data _S1 to _S0 in the facility data map, and the searched facility data is _n (step 45). Next, a facility output command including this facility data S _n and the regional data C _n retrieved in step 42 is generated.
Generated for CDROM3 (step 46).
In response to this facility output command, the CDROM 3 reads out from the CD an RGB digital signal representing the facility symbol mark written in the number specified by the area data C _n and the facility data S _n and supplies it to the CRT display circuit 4 . Therefore, for example, if a user contacts
If the facility corresponding to the selected area on the CRT6 screen is a hot spring, the hot spring symbol mark will be superimposed over the hot spring area on the road map on the CRT6 screen, as shown in Figure 3d. be.

After executing step 38 or 44, controller 1
Execute step 31 again. If it is determined in step 27 that A _n =MA, step 30 is executed assuming that the current location exists within the displayed road map.

In addition, regional data maps M ₁ , M ₂₁ to M _2o ,
_M31 to _M3o and the facility data map are written in the ROM in the controller 1 in advance.

In the embodiments of the present invention described above, hot springs, restaurants, etc. are shown as related facilities that can be displayed on the road map, but the information is not limited to this, for example, information obtained from traffic information etc. or personal Information may also be displayed using symbols.
Furthermore, in addition to displaying the locations of facilities of the same type using symbol marks, the locations of different facilities may be indicated using respective symbol marks.

Effects of the Invention As described above, in the in-vehicle navigation device of the present invention, when the road map is enlarged, a numerical pattern for selecting an enlarged area is displayed, and when the enlargement reaches the maximum, a type pattern for selecting related facilities is displayed. This simplifies operation and reduces erroneous operations. In addition, the positions of related facilities are displayed in a pattern only on the maximum enlarged map, so the positions can be easily recognized visually.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a flow diagram showing the operation of a controller in the apparatus shown in FIG. 1, and FIG. 3 is a diagram showing the operation of the apparatus shown in FIG. Explanation of symbols of main parts, 1... Controller,
2...VDP, 3...CDROM, 4...CRT display circuit, 5...Touch key input circuit, 6...CRT,
7...Touch sensor, 8...Current location detection device.

Claims (1)

[Claims] 1. A display device that selectively displays any one of a numerical pattern for selecting an enlarged area of a road map and a type pattern of related facilities that can be displayed on a road map in a plurality of predetermined areas on a display surface; A touch sensor is transparently formed on the display surface and generates different outputs for each of the plurality of areas, and a road map of the area is enlarged according to the output of the touch sensor and displayed on the display, so that the enlargement of the road map is maximized. display driving means for displaying the type pattern corresponding to the output of the touch sensor on the display device in correspondence with the road map being displayed when the touch sensor is turned off, the display device expanding the road map to the plurality of areas; An in-vehicle navigation device characterized in that the number pattern is displayed until the enlargement reaches a maximum, and the type pattern is displayed when the enlargement reaches a maximum.