JPH09292243A - Map display device and navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve usability of a navigation device by respectively displaying maps on a parent picture plane and a child picture plane of a first display part, changing the picture planes to each other, and changing contraction scale of the map displayed on one of the parent picture plane and a child picture plane. SOLUTION: When key input is obtained from a remote-control 7, whether changeover of contration scale is in an up key 152a or in a down key 152b, is judged. In case of the down key 152b, whether a slide switch 170 is changed on the parent picture plane side or the child picture plane side, is judged. In case of the parent picture plane side, the contraction scale of a map displayed on the parent picture plane is stepped down by one step. In case of the child picture plane side, the contraction scale of a map on the child picture plane side is stepped down by one step. Meanwhile, when the up key 152a is pushed, whether the slide switch 170 is on the parent picture plane side or the child picture plane side, is judged, and the respective contraction scales of the map are stepped up by one step. The contraction scale can be changed for both maps, and hence the usability is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a map display device and a navigation device, and more particularly to one display device.
The present invention relates to a map display device and a navigation device capable of displaying one screen.

[0002]

2. Description of the Related Art Conventionally, a navigation device for displaying a map including the current position of a vehicle is known to assist the operation of the vehicle.

[0003]

The inventor of the present application has assumed the navigation device shown in FIG. This is a navigation device capable of simultaneously displaying a parent screen and a child screen on one display device (such as a liquid crystal display or a cathode ray tube).

Referring to the figure, the navigation device has an input device 601 composed of a remote controller, a touch panel, etc., and a key input driver 603 for selecting a process performed by the navigation device by inputting a hardware signal from the input device. And a map drawing processing unit 600 that draws a map image on the display device based on various signals from the key input driver, a base plane 713 that stores the contents displayed on the display device, and a base plane that is displayed in an overlapping manner. It is composed of an overlay plane 711 for recording the content of the image.

Further, the map drawing processing unit 600 displays the scale setting module 605 for changing the scale of the map displayed on the display device based on the input from the operator and the display device based on the scroll signal from the key input driver. A raster counter module 607 for scrolling the display content of the displayed parent screen, a parent map drawing processing module 609 for drawing the map displayed on the parent screen, and a child for drawing processing of the map displayed on the child screen. A map drawing processing module 613, a reading module 611 for reading the map data recorded in the CD-ROM, and a small screen on / off setting unit 61 for setting whether to display a small screen.
5 is included.

The base plane 713 includes a parent screen image memory 619 for storing the display content of the parent screen and a child screen image memory 621 for storing the display content of the child screen.

The overlay plane 711 is a component image memory 6 for storing image data such as map symbols and scale marks which are displayed overlaid on the maps displayed on the parent screen and the child screen.
Including 17

A command input by the operator through the input device 601 is a key input driver 60 as an external operation signal.
Input to 3. The key input driver 603 outputs a scale setting signal to the scale setting module 605, a parent / child selection signal to the child screen on / off setting unit 615, and a scroll signal to the raster counter module 607 based on the external operation signal. To do.

The scale setting module 605 outputs a signal for writing a scale mark indicating the scale of the map currently set to the component image memory 617. At the same time, the scale setting module 605 is the parent map drawing processing module 6
For 09, a signal for setting the scale of the map of the main screen drawn on the base plane is output. The parent map drawing processing module 609 uses the CD-ROM data reading module 611 to set the map of the scale set based on the vehicle position data input from a GPS device (not shown) and the scale data input from the scale setting module. The data is read and drawn in the main screen image memory 619. The child screen map drawing processing module 613 uses the vehicle position data and the CD.
-Based on the map data input from the ROM data reading module 611, draw a map of a predetermined reduced scale in the small screen image memory 621. Whether or not the small screen is displayed is determined based on a signal from the small screen on / off setting unit 615. This allows the user to display or not display the child screen on the display device via the input device 601.

The raster counter module 607 scrolls the display contents of the main screen image memory 619 based on the scroll signal. The user can search for a desired spot on the map by scrolling the map displayed on the main screen.

As is apparent from the figure, the user can change the scale of the map or scroll the map on the displayed parent screen. On the other hand, the user can only select whether or not to display the child screen. That is, the scale of the map displayed on the child screen is always constant, and the display area of the map displayed on the child screen is always the area around the vehicle position.

In such a navigation device, the situation of the entire planned route or the route ahead of the vehicle scheduled to be traveled is displayed on the child screen, and the route around the vehicle position is largely displayed on the main screen. The driver can obtain information such as where he / she is currently driving and how far he / she must travel to the destination.

However, in order to display the entire route on the main screen, it is necessary to change the scale of the main screen each time. Further, in order to know the situation in front of the route without changing the scale on the parent screen, it is necessary to scroll the display contents of the parent screen via the input device 601. In this way, the user must always change the display content of the parent screen by using the input device 601, which deteriorates the operability of the conventional navigation device.

Even if the user finds a point of interest on the map by scrolling or the like, the point of interest is displayed in order to perform a navigation operation to display a map near the current position of the vehicle thereafter. It is necessary to delete the map that was created.

Further, input from the input device may be prohibited only while the vehicle is traveling. In such a case, the user may use the input device while the vehicle is stopped by a traffic signal or the like to scroll the display content of the main screen to see, for example, the situation ahead. In such a case, once the vehicle starts traveling, the operation from the input device is prohibited, so that the scroll operation is interrupted. At that time, if it is necessary to return to the navigation operation, by pressing a special key for displaying the navigation map, the display that was being scrolled until then is erased and the navigation screen is displayed. There must be. If the user wants to see the same place on the map that was deleted during the next vehicle stop period, the scrolling operation must be restarted from the beginning.

As described above, the navigation device having the parent-child screen is complicated to operate.

[0017]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a map display device and a navigation device which are easy to use.

In order to achieve the above object, the map display device according to claim 1 has a first display unit capable of displaying a map on each of a parent screen and a child screen, and an operation target is a parent screen or a child screen. A first input section for inputting first information for switching between the two from the operator, and a second input section for inputting second information for changing the scale of the map displayed on the display section from the operator Based on the input part of and the first and second information,
A first changing unit that changes the scale of the map displayed on at least one of the parent screen and the child screen.

According to the first aspect of the invention, the operator inputs information for switching between the parent screen and the child screen, and information for changing the scale of the map displayed on the display unit, The scale of the map displayed on at least one of the parent screen and the child screen is changed based on the information.
As a result, the operator can easily change the scale of the map displayed on the main screen and the map displayed on the child screen, so that the usability of the device can be improved.

A map display device according to a second aspect of the present invention is the device according to the first aspect, further comprising second changing means for changing the size of the small screen.

According to the second aspect of the present invention, since the size of the small screen is changed, the small screen can be displayed in a preferable size, and the usability of the apparatus is further improved.

A map display device according to a third aspect is the first aspect.
Or the second display unit for displaying the map on the map displayed on either one of the parent screen and the child screen by overlaying the cursor on the map, and the device described in 2. A map that is displayed on the screen, and a control unit that controls to display the map in which the scale of the map where the cursor is displayed is changed on the other screen of either the parent screen or the child screen. Is further provided.

According to the third aspect of the invention, the cursor is displayed on either the main screen or the child screen, and the map where the cursor is displayed is displayed on the other screen with a reduced scale. . Since it is possible to display different scale maps of the portion designated by the cursor, the usability of the device is improved.

A map display device according to a fourth aspect is the device according to any one of the first to third aspects, further comprising a storage section for storing map data including a plurality of marks, and the sub-screen is stored. A map including a desired mark among the plurality of marks included in the generated map data is displayed. This makes it easier to see the map displayed on the child screen.

A map display device according to a fifth aspect is the device according to any one of the first to fourth aspects, further comprising a scroll unit for scrolling the display content of either the parent screen or the child screen. . As a result, the operator can scroll the display content of either the parent screen or the child screen, and can easily know the desired position on the map.

A navigation device according to claim 6 is
A map display device according to any one of claims 1 to 5 is provided. This makes it possible to provide a navigation device that can effectively display a map.

A navigation device according to a seventh aspect is
The map display device according to claim 1, a detection unit that detects the current position of the moving body, and a third input unit that inputs information for scrolling the map. A map including the detected current position is displayed, and the display content of the child screen is scrolled based on the information for scrolling.

Thus, the operator can see a necessary portion in the map by scrolling the display content of the inset screen while confirming the situation around the current position of the moving body. This improves the usability of the device.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will now be described in detail with reference to the drawings. The same reference numerals in the drawings indicate the same or corresponding parts.

FIG. 1 is a block diagram showing a hardware configuration of a navigation device according to one embodiment of the present invention.

Referring to the figure, the navigation device receives a signal from a satellite to grasp the current position of a vehicle in which the device is mounted, a global positioning system (hereinafter referred to as GPS) device 1, a program execution and various types. A CPU 5 that performs calculations, a GPS interface unit 3 that forms an interface between the GPS device and the CPU, a memory 11 that stores programs and various constants,
A CD drive 23 for reading data from a CD recording map data, a gyro 17 for identifying the traveling direction of the vehicle, and a sub CPU 19 for inputting signals from the gyro 17 and controlling the CD drive, memory, and the like. And an image controller 21 for controlling the display
And a voice controller 29 for outputting voice,
Remote controller 7 that accepts requests from operators
And various sensors 9, a communication gate array 15 for exchanging signals from the remote controller and the sensor, and a display 31 connected to the image controller 21 and displaying a map image or the like by inputting an NTSC signal from the image controller. , And a speaker 33 for inputting and outputting a voice signal from the voice controller 29.

The memory 11 has a data buffer unit 13
Is included. The CD drive 23 includes a laser pickup 27 and its servo mechanism 25.

FIG. 2 is a view showing the external appearance of the remote controller 7 shown in FIG. Referring to the figure, the remote controller 7 includes a joystick 150 including a set key capable of inputting information in eight directions of up, down, left and right, and set information for inputting data, and a main screen and a sub screen. Scale-up key 152a for increasing the scale of the displayed map and scale-down key 1 for decreasing the scale.
52b, a route key 154 for one-touch recalculation of a recommended route, setting of destination / registered place, recommended route search, communication with an external navigation device, reading image data from memory, and main screen and sub-screen A menu key 156 for displaying a screen such as map scroll setting for setting whether to scroll the image,
A map key 158 for displaying a map centering on the current position of the vehicle and a map displayed on the screen as a heading-up display (display in which the traveling direction is on the screen),
The rotation key 160 for selecting whether to display in the north-up display (display with the north direction of the map on the screen), the guidance key 162 for displaying the guidance screen, and the displayed 1
It is possible to set a return key 164 for returning to the previous screen, a key 166 for turning on / off the power of the entire apparatus, and a specific function such as switching whether to display the recommended route or not. Function key 168
And a slide switch 170 for setting whether the input information is for the parent screen or for the child screen.

If the knob of the slide switch 170 is on the left side of the drawing, the key operation input in that state is for the parent screen, and conversely, if the knob of the slide switch 170 is on the right side, that key is pressed. The key operation input in the state is for the child screen.

FIG. 3 is a block diagram showing the configuration of software stored in the memory 11 of FIG.

Referring to the figure, the software 200 displays the device input driver 204 for inputting an external operation signal from the input device 202 (the remote controller 7 in FIG. 1) and the display 31 based on the signal from the device input driver 204. A map drawing processing unit 230 that draws a displayed map, a base plane 260 that stores the contents of the map that is displayed on the display 31, and a place name, a map symbol, a scale mark, and the like that are displayed overlaid on the base plane are displayed. And overlay plane 250.

The map drawing processing unit 230 includes a scale setting module 206 for inputting a scale setting signal from the device input driver, a plane / parent / child screen setting module 210 for inputting signals from the device input driver and the scale setting module, and a plane A map drawing module 212 for inputting signals from the parent-child screen setting module and a CD
A CD data reading module 214 that reads information from the ROM and outputs it to the map drawing module, and a child screen or a parent screen that is displayed on the base plane based on a scroll signal that includes the scroll direction and speed output from the device input driver. A raster counter module 208 for scrolling the display content is included.

A component image memory 216 is included in the overlay plane. The base plane 260 includes a parent screen image memory 220 that stores the display content of the parent screen and a child screen image memory 218 that stores the display content of the child screen.

The data written in the image memory is sequentially converted into RGB signals by the hardware and displayed on the display.

Referring to FIG. 4, the plane / parent-child screen setting module 210 includes a child screen size changing unit 301 for changing the size of the child screen and a child screen position changing unit 303 for changing the display position of the child screen. And a cursor processing unit 305 for moving the displayed cursor and processing a map portion existing at the position indicated by the cursor, a parent screen processing unit 309 for processing the display contents of the parent screen, and a child screen display. And a child screen processing unit 307 for processing the content.

FIG. 5 is a diagram showing a specific example of contents displayed on the display 31 of FIG. Referring to the figure, the display 31 has a parent screen 4 displayed on the entire display.
01 and a child screen 403 displayed on a part of the display
And are included. The display position of the small screen can be changed by the function of the small screen position changing unit 303. Further, the size of the child screen can be arbitrarily changed by the function of the size changing unit 301. This allows the display 31 to display a screen that is easy for the driver and the operator to see.

A scale mark 405 indicating the scale of the map displayed on the master screen is displayed in the corner of the master screen 401, and a scale mark 407 for the slave screen is displayed on the slave screen 403.

The relationship between the parent screen and the child screen can be changed from the following (1) to (3).

(1) As shown in FIG. 5, the parent screen 40
A method of displaying a cursor 409 on the screen 1 and displaying an enlarged map (or a reduced map) at the position indicated by the cursor 409 on the child screen 403. At this time, the cursor is Joystick 1
You can move by 50.

(2) A method of displaying a map including the current position of the vehicle on one of the master screen and the slave screen, and displaying an arbitrary map selected by the operator by scrolling on the other of the master screen and the slave screen. Scrolling can be done in any direction with the joystick.

(3) A method of displaying an arbitrary map operated by the operator on both the parent screen and the child screen.

Such a setting can be arbitrarily made by the operator by switching the slide switch 170 of the remote controller 7 shown in FIG. 2 and selecting the menu screen using the joystick 150.

Further, the scales of the maps displayed on the parent screen and the child screen can be arbitrarily changed. FIG. 6 is a flowchart showing a process for changing the scale of the map displayed on the display.

Referring to the drawing, it is determined in step S1 whether or not there is a key input from the remote controller. If YES in step S1, the scale is switched using the up key 152a or the down key 152 in step S2.
It is determined whether it is b. When it is determined in step S2 that the key is the down key, it is determined in step S3 whether the slide switch 170 is switched to the parent screen side or the child screen side. If it is the parent screen side, step S4 is performed. The scale of the map displayed on the main screen is reduced by one step. On the small screen side, the scale of the map on the small screen side is reduced by one step in step S5, and the processing here is terminated.

On the other hand, when it is determined in step S2 that the up key 152a has been pressed, it is determined in step S6 whether the slide switch is on the parent screen side or the child screen side. If it is the parent screen side, then in step S7. The scale of the map on the main screen is increased by one step. If it is on the small screen side, the scale of the map on the small screen is increased by one step in step S8.

In this way, the operator can easily change the scale of the map on either the parent screen or the child screen.
The usability of the device is improved.

By setting, the user can switch whether to scroll the display contents of the main screen and the display contents of the child screen as shown in FIG. Figure 7
With reference to, when mode 1 is selected, the parent screen is not scrolled, and only the child screen is scrolled. In mode 2, both the parent screen and the child screen are scrolled. In mode 3, the main screen is scrolled, and the child screen is not scrolled. In mode 4, neither screen is scrolled.

For example, the operator sets the mode 1 so that the main screen always displays the map including the current position of the vehicle, and the joystick scrolls the map in any direction on the sub screen to display the desired facility or target. You can search for places to do.

In such scroll setting, the user operates the joystick 150 for each of the main screen setting and the child screen setting while the map scroll setting screen as shown in FIG. 8 is displayed. Can be done by.

That is, it is possible to set whether the signal from the raster counter module is for the parent screen in the image memory, for the child screen, or for both sides.

Note that in scrolling, the processing shown in FIG. 9 is executed. When the device input driver receives the scroll signal from the remote controller 7, the scroll signal including the scroll direction and the scroll speed is output to the raster counter module 208. Upon receiving this signal, the raster counter module 208 determines which area of the map data 500 written in the memory is to be displayed on the display 31, and moves the display area in a predetermined direction by a predetermined distance. For example, when the displayed contents are scrolled from the upper right to the lower left on the screen, the display areas are the areas 501a to 501 in FIG.
Move to b. This realizes scrolling. It should be noted that the display area may be moved during the blanking period of the display in order to prevent the image in the middle of the movement from being displayed. In this embodiment, the display areas of both the parent screen and the child screen are changed during this period.

Immediately after the ignition key of the vehicle is located at the accessory position, backup data indicating whether to display the parent screen and the child screen at the same time, and the scales of the respective maps of the parent screen and the child screen to be displayed. When the backup data and the backup data are recorded in the memory or the operator can set the preference, the usability of the apparatus is further improved.

For example, when it is desired to simultaneously display two scale screens of a detailed map near the current position of the vehicle and an overall map of the route, the scale setting values of the parent screen and the child screen are set in advance as such. Then, the user can view the desired screen without performing a complicated operation.

In the above embodiment, the slide switch 170 is used to select the operation for the main screen or the operation for the sub screen. However, the device is provided with a voice recognition device (for example, as the sensor 9 in FIG. 1), The driver may change the scale by saying "wide area", "details" or the like. For example, when the driver utters "Details of sub screen", the scale of the sub screen is set to 1
You may make it change to the step detailed direction.

Further, a plurality of marks to be written in the overlay plane as map data may be stored, and only a desired mark (for example, a mark of a facility intended by the driver) may be displayed on the map. Good.

The advantages of the navigation device of the present embodiment configured as described above are as follows.

(1) The operator can scroll the map with the joystick while always displaying the current position of the vehicle on the screen. Therefore, the map including the current position of the vehicle can be displayed while the contents displayed by the scroll operation remain. As a result, for example, the result of searching the map halfway can be saved as it is and the current position of the vehicle can be displayed. For example, when the vehicle stops, the search can be continued from the partially searched map.

(2) It is not necessary to perform a complicated operation even when it is desired to change the scale of the small screen. For example, if the setting screen is displayed and the scale of the child screen is changed on the setting screen, the operation becomes complicated, but with the navigation device in the present embodiment, the same simple operation as changing the scale of the parent screen is performed. You can change the scale of the inset screen.

(3) Since the size of the child screen can be changed, it is possible to display the screen according to the user's preference.

(4) By operating the cursor shown in FIG. 5, for example, a wide-area map is displayed on the main screen, and the desired portion of the wide-area map is indicated by the cursor. It is possible to display a detailed map centered on a specific point. This improves the efficiency of map retrieval.

(5) When various facilities such as shops, gas stations and restaurants are present as marks on the map, desired marks can be displayed. For example, it is possible to display all the marks on the main screen as in the normal display, and to pre-select the facility on which the operator wants to pay attention on the child screen and display only the mark. This makes it possible to easily determine the facility or the like that you want to stop by while traveling. For example, when a driver wants to stop at a restaurant or shop on the way to a destination, by displaying only the type of facility he / she wants to stop, the driver or the like can be easily notified that he / she has approached that position.

(6) For example, when the main screen is scrolled and a map around the destination is displayed, that state can be retained. At this time, when it is desired to display another map such as the vicinity of a place to drop in on the way, the operation can be moved to the sub-screen side by operating the switch, and the desired point can be searched on the sub-screen.

[Brief description of drawings]

FIG. 1 is a block diagram showing a hardware configuration of a navigation device according to an embodiment of the present invention.

FIG. 2 is a diagram showing an appearance of a remote controller 7 of FIG.

FIG. 3 is a block diagram showing a configuration of software stored in a memory 11 of FIG.

4 is a block diagram showing a configuration of a module 210 of FIG.

5 is a diagram showing a specific example of contents displayed on the display 31 of FIG.

FIG. 6 is a flowchart showing a process of changing the scale.

FIG. 7 is a diagram for explaining scroll setting of a parent screen and a child screen.

FIG. 8 is a diagram showing a scroll setting screen displayed on a display.

FIG. 9 is a diagram illustrating a method of scrolling a map image.

FIG. 10 is a diagram showing an example of a navigation device.

[Explanation of symbols]

 7 Remote Controller 150 Joystick 152a, 152b Scale Key 170 Parent / Child Screen Switch 230 Map Drawing Processor 218 Child Screen Image Memory 220 Parent Screen Image Memory 401 Parent Screen 403 Child Screen

Claims (7)

[Claims] 1. A first display unit capable of displaying a map on each of a parent screen and a child screen, and a first information for switching an operation target between the parent screen and the child screen. First input means for input from an operator, second input means for inputting second information for changing the scale of a map displayed on the first display means from an operator, the first and A map display device comprising: a first changing unit that changes a scale of a map displayed on at least one of the parent screen and the child screen based on second information. 2. The map display device according to claim 1, further comprising second changing means for changing the size of the child screen. 3. A second display unit for displaying a map on a map displayed on either one of the parent screen or the child screen by overlaying a cursor thereon, and one of the parent screen and the child screen. A control for performing control so as to display a map in which the scale of the map of the portion in which the cursor is displayed is displayed on the other screen of the parent screen or the child screen. The map display device according to claim 1, further comprising a means. 4. A storage unit for storing map data including a plurality of marks, wherein the child screen displays a map including a desired mark among the plurality of marks included in the stored map data. The map display device according to any one of claims 1 to 3. 5. The map display device according to claim 1, further comprising scroll means for scrolling the display content of one of the parent screen and the child screen. 6. A navigation device comprising the map display device according to claim 1. 7. A map display device according to any one of claims 1 to 5, a detection means for detecting the current position of the moving body, and a third input means for inputting information for scrolling the map. A navigation device, wherein the main screen displays a map including the detected current position, and the display content of the sub screen scrolls based on the scrolling information.