JP2002365080A - Map display device and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a map display device which can accurately and easily make itself understood by the outside. SOLUTION: The user of the map display device 26 selects roads which become the route to its destination on a map displayed on the display device 26 by operating a group of control switches on a touch panel, etc., laminated upon and integrated with the display device 26. The device 26 displays a menu for selecting display attributes, such as the thickness, color, line type, etc., of the selected roads and displays the roads by using selected display attributes. The display device 26 transmits communication data composed of map displaying information consisting of selected data including the display attributes and the link IDs of the selected roads and the center coordinates, scale, and direction of the map displayed on the display device 26 at the time of selecting the roads and hand-written data inputted by the user by operating the control switches to another navigation system. The navigation system displays a map and the selected roads on the display device 26 based on the communication data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a map display device and the like.

[0002]

2. Description of the Related Art A current position of a vehicle or a pedestrian moving along with the traveling thereof is displayed on a display together with a road map, and an appropriate route from the current position to a destination is set.
Navigation devices that provide route guidance are known, and contribute to smoother driving and movement.

In such a navigation device, for example, the content input by handwriting from an input device such as a touch panel is displayed on a display, the handwritten data is transmitted to another navigation device, and the handwriting data received by another navigation device is received. Devices having a function of displaying data on a display have been considered.

[0004]

However, in order to use such a navigation device to teach a user of another navigation device a route to be traveled or a route to a destination, a display on a display is required. It is necessary to perform handwriting input so that a road that becomes a route from among the roads that have been set can be identified as a road other than the route. For example, the user has hit the road as a route by handwriting to highlight it, draws a mark such as an arrow to indicate the road as a route, or inputs handwritten characters to indicate the road as a route. Therefore, especially when the roads displayed on the display are complicated, the sender who inputs the information by handwriting on the navigation device on the transmission side may mistakenly follow a road that is not a route, or the road to be pointed becomes ambiguous. Or may be. In such a case, the navigation device on the receiving side is displayed with handwritten data indicating an erroneous road or handwritten data in which it is difficult to identify the road to be pointed, so that the recipient who sees the display may misidentify the route. ,
There is a problem that the route cannot be grasped.

[0005] Further, in a navigation device installed in a vehicle, it is difficult to accurately indicate a route or the like by handwriting when the operation space of the navigation device is not sufficient or due to the influence of vibration of the vehicle. On the other hand, even in a portable navigation device, it is difficult to accurately specify a road because the device is held with one hand and handwriting input is performed with the other hand.

[0006] Such a problem also occurs not only in a device having a navigation function but also in a map display device having a function of simply displaying a map. Therefore, an object of the present invention is to solve these problems and to provide a map display device that can accurately and easily communicate with the outside through a map.

[0007]

Means for Solving the Problems and Effects of the Invention According to a first aspect of the present invention, there is provided a map display apparatus for selecting a road from a road map displayed in response to a user operation. And a function of transmitting selection data, which is information about a selected road, and a function of receiving and displaying road data. Therefore, for example, a user (referred to as a sender) who wants to teach a route to another person can directly select a road to be a route from the displayed road map. Therefore, unlike the related art, the sender does not need to devise a method of inputting handwriting so that another person can specify a path that the sender wants to convey. In other words, it is not necessary to trace the route to emphasize it, draw a mark such as an arrow on the route, or input characters by hand to indicate the road to be the route, and can directly select the road. Therefore, it is possible to easily inform a receiver who is a user of the map display device on the receiving side of a route or the like that the user wants to teach. In this way, a road on the map can be selected and input, so that the route and the like can be transmitted more accurately than in the conventional handwritten input. That is, it is possible to accurately and easily communicate with each other about the route and the like.

[0008] The road data may be expressed as a link obtained by dividing the road into predetermined sections, for example. For example, when an arbitrary point on a link is designated, a link including that point is selected. Then, a link ID for specifying the selected link is transmitted as road specifying information. Other map display devices receive the link ID and display using the road data corresponding to the link ID. This makes it possible to significantly reduce the amount of data to be transmitted, as compared with the conventional case where handwritten data is transmitted as vector data or raster data. Therefore, the amount of memory used can be reduced, and cost reduction and size reduction can be achieved. Further, the amount of communication can be reduced, and the cost for communication can be reduced. Further, the communication time can be shortened, the waiting time for communication can be shortened, and communication can be performed more smoothly.

The selected road can be distinguished from the non-selected road by changing the display mode to determine whether the selected road is in the selected state or in the non-selected state. As shown in
It is also displayed on the receiver's map display device according to the display attribute when the sender selected. Therefore, for example, when the sender gives a description of a road selected and input to the map display device by using a telephone or the like in combination with the receiver, only the explanation based on the displayed content is performed, and the will is smoothly determined. Communication can be performed. For example, if the selected roads were to be displayed as wider lines than the unselected roads, the sender could simply say, "Please go through the thicker road," It is possible to grasp the route. Such display attributes include, for example, line width (thickness), line type (solid line, broken line, dashed line, dashed line, etc.), line color (red, blue, yellow, green, etc.), line Flashing (Yes,
A combination such as “No”) may be used, and the display attribute information may be information that can identify them.

[0010] The map display device that has received the selection data may display it, for example, when an instruction to display a road corresponding to the selection data is input.
For example, if the apparatus displays a road map in a predetermined range near the current position, if there is a road corresponding to the received selection data in the predetermined range, the road may be displayed. Alternatively, a map around the selected data may be displayed immediately upon receiving the selected data.

When displaying the road corresponding to the selected data in this manner, the map display device on the receiver side is displayed on the basis of the display state of the map on the map display device on the sender side. It is recommended that a map be displayed. For example, the map display information may include screen center coordinates, scale, map orientation, and the like. This makes it possible to display, for example, a map in the same range in the same direction on each of the map display devices on the transmission side and the reception side. Therefore, for example, the same screen can be displayed on the map display devices on the transmitting side and the receiving side, so that communication can be performed more easily.

Further, it is preferable that the information input by handwriting is transmitted to another map display device for display. Inputting the handwritten data includes, for example, drawing on a screen in response to a user operation, and converting the drawn content into predetermined handwritten data such as vector data. If you do this,
For example, after selecting a road, a comment, a memo, or the like for the selected road can be written by hand. Therefore, information can be further added on the map, and communication becomes easier.

The selection data, which is information on the road selected by the sender, can be used not only for displaying a map as described above, but also for various processes. For example, as shown in claim 6, it can be used for route calculation. For example, a selected road may be included in the route calculation even if the road is not normally included in the route calculation. In addition, it is also possible to select a road that is unlikely to be normally selected as a route. By doing so, it is possible to provide guidance for a route that cannot be calculated by a map display device (navigation device) having the current navigation function, and it is possible to improve the accuracy of the route calculation on the sender side at any time and to improve the receiver. The accuracy of the route calculation on the side can also be improved.

[0014] Then, as shown in claim 7, claim 1
The function of realizing each of the means described in any one of (1) to (6) in a computer system can be provided, for example, as a program activated on the computer system side. In the case of such a program, for example, the program is recorded on a computer-readable recording medium such as a floppy (registered trademark) disk, a magneto-optical disk, a CD-ROM, a hard disk, a ROM, and a RAM, and is loaded into a computer system as needed. It can be used by starting it up, or by loading it over a network and starting up.

Further, since the map display device only has to constitute the map display device as a whole, each function may be realized by a plurality of computers. For example, each unit may be constituted by a plurality of different computers and installed at different locations, and information may be exchanged between the units using communication. For example, the map data storage means may be provided in a computer such as an external communicable information center.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. It is needless to say that the embodiments of the present invention are not limited to the following examples, and can take various forms as long as they belong to the technical scope of the present invention.

FIG. 1 is a block diagram showing a configuration of a navigation device 1 as a map display device. The navigation device 1 includes a position detector 21 for detecting a current position of the vehicle.
And an operation switch group 22 for inputting various instructions from a user, a remote control terminal (hereinafter, referred to as a remote controller) 23a capable of inputting various instructions similarly to the operation switch group 22, and a signal from the remote controller 23a. Mobile phone connection device 2 for connecting a remote control sensor 23b for inputting a message and a mobile phone 32 to perform a telephone call or communication with the outside.
4, an external storage device 25 for inputting map data and the like from an external storage medium storing map data and various information, a display device 26 for performing various displays such as a map display screen and a TV screen, and various guides. A speaker 27 for outputting voices and the like, a microphone 28 for inputting various instructions by voice as in the case of the operation switch group 22 and the remote controller 23a, and a vehicle signal I for inputting vehicle signals such as a shift range and a lamp state. / O29 and various processes are executed in accordance with the input from the position detector 21, the operation switch group 22, the external storage device 25, the remote controller 23a, the microphone 28, and the vehicle signal I / O29. Switch group 22, remote control sensor 23b, mobile phone connection device 24, external storage device 25, display device 26, speaker 27, microphone 28, vehicle signal I / O 29 And a control circuit 30 for controlling.

The position detector 21 is a GPS (Global Positi
A GPS receiver 21a that receives a transmission radio wave from an artificial satellite for an oning system via a GPS antenna and detects the position, direction, speed, and the like of the vehicle, and a gyro that detects the magnitude of the rotational motion applied to the vehicle. A scope 21b and an acceleration sensor 21 for detecting the longitudinal acceleration of the vehicle
c and a geomagnetic sensor 21d for detecting the traveling direction from the geomagnetism. And each of these sensors 2
1a to 21d are configured to be used while complementing each other because each has an error having a different property. Depending on the accuracy, it may be composed of some of the sensors described above, or a sensor for determining the direction by accumulating the steering angle of the vehicle obtained from the rotation difference between the left and right steered wheels, and the wheel of each rolling wheel. A sensor or the like may be used.

The operation switch group 22 includes the display device 2
6, a touch panel provided on the display screen, a mechanical key switch provided around the display device 26, and the like are used. The touch panel is composed of infrared sensors that are arranged vertically and horizontally on the screen of the display device 26. For example, when the infrared rays are blocked by a finger or a touch pen or the like, the blocked position becomes a two-dimensional coordinate value (X, Y). Is detected as Thus, a predetermined instruction can be input by directly touching the display screen. The touch panel and the display device 26 are laminated and integrated, and there are various other types of touch panels such as a pressure-sensitive type, an electromagnetic induction type, a capacitance type, a resistive type, or a combination thereof. But,
Either of them may be used.

The external storage device 25 is a device for inputting various data including so-called map matching data, road data, and other additional data for improving the accuracy of position detection. As the external storage medium, a CD-ROM or DVD is generally used because of its data amount, but other media such as a magnetic storage device such as a hard disk or a memory card may be used.

The road data is a map formed by connecting a plurality of nodes, such as intersections and junctions, with links. For each link, a unique number (link ID) for specifying the link, a link ID Link length, indicating the length of
X and y coordinates of the start and end of the link, the road width of the link,
And link information including data of road types (indicating road information such as toll roads).

The display device 26 is a color display device,
There are a liquid crystal display, a plasma display, a CRT, an organic EL, and the like, and any of them may be used. The display screen of the display device 26 communicates with the mark indicating the current position of the vehicle detected by the position detector 21, the map data input from the external storage device 25, the destination mark, and the mobile phone connection device 24. , And additional data such as a guide route to the destination, a name, a mark, and marks of various facilities can be displayed in a superimposed manner. A facility guide can also be displayed. Then, the speaker 27 outputs a facility guide and various guidance voices input from the external storage device 25.

The control circuit 30 comprises a CPU, ROM, RA
It is mainly composed of a well-known microcomputer including M, I / O and bus lines connecting these components, and based on a program stored in a ROM and a RAM, the following (1) to (13) And so on. (1)
Current position calculation processing for calculating the current position of the vehicle as a set of coordinates and traveling direction based on each detection signal from the position detector 21; (2) displaying a road map or the like from road data read via the external storage device 25 Processing to be displayed on the device 26;
(3) A destination selection process of selecting a destination facility in accordance with the operation of the operation switch group 22 or the remote controller 23a (hereinafter, referred to as the operation switch group 22 or the like) based on the point data stored in the external storage device 25; 4) route calculation processing for automatically finding an optimal route from the current position to the destination;
(5) route guidance processing for displaying a guidance route superimposed on a road map on the display device 26 in accordance with the result of the route calculation process, and performing route guidance for guiding a driver to an appropriate route;
(6) a selection process of selecting a road on the map displayed on the display device 26 and changing the display of the selected road;
(7) Handwritten data for drawing a dot on a corresponding position on the screen in response to an input from the operation switch group 22 or the like on the display device 26 or performing various drawing on the display device 26 in response to an operation by a user Input processing; (8) communication data including map display information, selection data, and handwritten data relating to a map displayed by controlling the mobile phone connection device 24 and the mobile phone 32 for another navigation device; (9) a reception process for receiving the above-mentioned communication data from another navigation device 1, and (10) a display on the display device 26 based on the received communication data. Received information display processing, (1
1) Internet connection processing for controlling the mobile phone connection device 24 and the mobile phone 32 to connect to the Internet;
(12) Browser processing for reading a web page from a server on the Internet when connected to the Internet and displaying it on the display device 26; (13) E-mail processing for creating, displaying, transmitting and receiving e-mail.

As a method for automatically setting an optimum route in the route calculation process (4), a method such as the Dijkstra method is known. Next, as shown in FIG. 2, the navigation devices 1 configured as described above are respectively mounted on the vehicle a and the vehicle b (the respective navigation devices 1 are referred to as a navigation device 1a and a navigation device 1b). The operation of the user A and the respective processes of the navigation devices 1a and 1b when the user A teaches the route to the user B of the vehicle b will be described.

First, the user A operates the operation switch group 22 and the like to display a map of a route to be conveyed to the user B on the display device 26. This display is displayed by the control circuit 30 by the operation switch group 22 similarly to a general navigation device.
The display range of the map is obtained from the telephone number, the place name, and the like input from the user and the like, and the map data of the range stored in the external storage device 25 is read and displayed. FIG. 3A shows an example of the displayed map.

For example, when the user A wants to inform the user B of a road (route) indicated by a bold line in FIG. 3G, the user A inputs a road selection instruction from the operation switch group 22 or the like. When detecting the input of the road selection instruction, the control circuit 30 starts the selection process and displays the selection cursor 48 on the display device 26 as shown in FIG. When an instruction to move the selection cursor 48 is input from the operation switch group 22 or the like, the display position of the selection cursor 48 is moved. When a road selection instruction is input from the operation switch group 22 or the like in a state where the position of the selection cursor 48 overlaps the road displayed on the display device 26, the control circuit 30 determines the link information of the selected road. Link ID in
And changes the display of the range of the displayed link from the beginning to the end of the road to a display attribute (display mode) different from that of other roads. In addition, as the display attributes, the line thickness, color, line type, presence / absence of blinking, and the like can be designated. When a display attribute selection instruction is input from the operation switch group 22 or the like, the control circuit 30 causes the display device 26 to display a pop-up menu 50 as shown in FIGS. When a thickness selection instruction is input from the operation switch group 22 or the like, a thickness selection menu 52 is displayed (see FIG. 4A),
When a color selection instruction is input, a color selection menu 54 is displayed (see FIG. 4B), and when a line type selection instruction is input, a line type selection menu 56 is displayed (FIG. 4).
(C)). When a blink selection instruction is input, a blink selection menu (not shown) is displayed. Then, the menus 52, 54, and 5 for these display attributes are displayed.
When an instruction to select a display attribute is input from 6 or the like, the display form of the line is changed to the display attribute. For example, when blinking is selected by a blinking selection instruction, the corresponding road is blinkingly displayed. When a predetermined thickness is selected by the thickness selection instruction, the display of the corresponding road is increased as shown in FIG. In this way, the selected road can be highlighted.

Similarly, the user A is shown in FIG.
A road is selected as in (d) → (e) → (f) → (g). As described above, the control circuit 30 changes the display attribute of the line corresponding to the selected road, and stores the selection data including the link ID of the road and the display attribute in the selection order as a linear list. This selection data has a data structure shown in the middle part of FIG.

Further, the user A can input a handwriting input instruction from the operation switch group 22 or the like. When detecting the handwritten data input instruction, the control circuit 30 performs a handwritten data input process. That is, as shown in FIG. 4D, the handwriting input cursor 58 is displayed on the display device 26, and the cross cursor provided on the remote controller 23a or the operation switch group 22 (see the operation switch group 22 in FIG. 2).
Or, input handwritten data from the touch panel. When detecting that the cross cursor is operated while the drawing button of the operation switch group 22 or the like is pressed, the control circuit 30 moves the handwriting input cursor 58 according to the input from the cross cursor. While moving, drawing is performed by continuously marking points at positions corresponding to the display position of the handwriting input cursor 58. In the case of a touch panel, drawing is performed on the display screen of the display device corresponding to the touched position. For example, in FIG.
The user A draws a dashed circle at the position of the intersection where the user B wants to draw attention. Since drawing can be freely performed in this way, characters can be input by handwriting as shown in FIG. The handwritten data by such drawing is stored in the control circuit 30 as a group of vector data indicating the position and direction in which the drawing was performed.
That is, it is stored as handwritten data shown in the lower part of FIG.
Note that the vector data group may be stored together with the relation to the selected data (positional relationship information) as shown in FIG. 5, or may simply be stored on the display screen.

In this way, the user A can input a transmission instruction to the user B by operating the operation switch group 22 and the like after the selection of the road to be transmitted to the user B and the free drawing are completed. When the control circuit 30 detects the input of the transmission instruction to the user B, as shown in FIG. 5, the screen center coordinates which are the coordinates of the map at the center of the displayed screen, the scale of the displayed map, and the Map display information (see the upper part of FIG. 5) including the map direction indicating the direction of the upward direction, and the stored selection data (see the middle part of FIG. 5).
And the communication data composed of the stored handwritten data (see the lower part of FIG. 5) by controlling the mobile phone connection device 24 to call out the telephone number of the mobile phone of the user B stored in advance. After connecting, send.

When the navigation device 1b of the user B detects an incoming call of the mobile phone 32, the navigation device 1b controls the connection of the line.
A state is established in which communication with the navigation device 1a is possible. The navigation device 1a transmits the communication data to the navigation device 1b as described above, and the navigation device 1b
Receives the communication data (see FIG. 2).

When the navigation device 1b completes the reception of the data, it sends a message to that effect to the destination user A. Thereby, the user A can know that the data transmission to the user B has been completed. Next, the processing of the navigation device 1b that has received the communication data will be described. The control circuit 30 of the navigation device 1b
Based on the received communication data, a reception information display process for controlling the display of the display device 26 is performed. That is, first, the screen center coordinates of the map display information of the communication data shown in FIG.
The map data in the range to be displayed on the display device 26 from the scale and map direction is read from the external storage device 25 and the map is displayed on the display device 26. Therefore, as shown in FIG. 2, maps in the same range are displayed on the display devices 26 of the navigation device 1a and the navigation device 1b.

Subsequently, the display attribute of the road corresponding to the selected data type (link ID) of the received selected data is changed to the display attribute of the received communication data and displayed. That is, as shown on the right side of FIG. 2, the selected road 44 and the non-selected road 42 are displayed separately, and the display attributes of the selected road 44 are the same for the navigation device 1a and the navigation device 1b.

Then, the handwritten data 46 as shown in FIG. 2 is superimposed and displayed according to the vector data group of the handwritten data included in the received communication data. Therefore,
The display contents of the handwritten data are the same in the navigation device 1a and the navigation device 1b.

As described above, since the user A can select a road instead of drawing the road shape by hand, an accurate road (route) can be easily transmitted to the user B.
In particular, even on a complicated map, the user A and the user B can accurately and easily communicate with each other. In addition, since the road can be expressed thickly, the color can be changed or blinked, and a handwritten comment can be added at the same time, and the screens of both display devices can be displayed in the same manner, communication can be further facilitated. By sharing the communication data between different navigations via the mobile phone 40, communication between remote locations can be facilitated. In addition, since the amount of handwritten data can be reduced by not handwriting the road, the amount of data transferred between the navigation devices can be reduced, and operations and displays with less waiting time can be performed.

It should be noted that the detection of various instructions input from the operation switch group 22 or the like may be performed, for example, by detecting that a key of the remote controller 22 or the like assigned in advance is pressed, or by detecting a predetermined switch or the like. When is pressed, a menu or the like may be displayed on the display device 26 and the user may select from the menu. Of course, the instruction may be input by voice or by touching the touch panel.

In the above embodiment, the selected data is used for changing the display of the road. However, the selected data may be used in the route calculation process. That is, in the route calculation processing, the route calculation is performed with a higher priority on the selected road 44 shown in FIG. 2 than on the non-selected road 42, for example, by changing the cost used for the route calculation. In this way, it is possible to provide route guidance according to the intention of the user A.

In the above embodiment, when a road selection instruction is input from the operation switch group 22 or the like with the position of the selection cursor 48 overlapping the road displayed on the display device 26, the road is selected. However, in order to improve operability when there is a nearby road such as parallel running of roads (highway and general road are up and down), even if the road is selected as follows, Good. That is, the road corresponding to one link ID is blink-displayed (flashing display) on the displayed road map, and when an instruction to move to another nearby road is input from a cross cursor or the like, the road to be blink-displayed is displayed. , To change from the currently blinking road to another nearby road. Then, the operation switch group 22
For example, when a road selection instruction is input from, for example, a road that is blinking is selected. In addition, any other method may be used as long as a link can be specified. Further, a predetermined range (on the middle of a link) in one road (link) may be selectable.
In this case, the range information may be included in the selection data. Thereby, for example, when the departure point and the destination point are in the middle of the road (one link), more detailed selection is possible.

In the above embodiment, the road data is read from the external storage device 25. However, the road data is read from the external information server or the like by connecting to the Internet or the like via the mobile phone 32, for example. You may.
Further, in the above-described embodiment, the description has been made assuming that the road is specified by the link ID, but the information may be specified by any information. For example, in the navigation devices 1a and 1b,
In the case where the map data is stored by being divided in units of a predetermined mesh, and a unique link ID is given to each link for each mesh, the link ID described above is used as the transmission data of the user A. , A set of a mesh number and a link ID may be used. That is, mesh numbers and link IDs are selected as the selected data types in FIG.
Is used. In the navigation device 1b of the user B, the combination of the mesh number and the link ID may be used to highlight and display the map based on other received data (data shown in FIG. 5).

According to the above embodiment, the screens of both display devices can be made identical based on the information shown in FIG.
The display screens do not necessarily have to match completely. That is, for example, the display may be performed using only the selected data type in the information of FIG. 5 received by the navigation device 1b on the user B side. Further, for example, the navigation device 1a on the user A side may transmit only the selected data type among the information shown in FIG. In the case where only the selected data type is used, the navigation device 1b may display a map based on the default setting and highlight only the link based on the received selected data type. In this way, the user B can determine the link selected by the user A even if the display modes of the maps are not the same. According to such a configuration, it is possible to communicate between different types of users who have difficulty in unifying the data format of all information in FIG. 5.

It is not always necessary to perform display according to the display attribute of the received selection data. For example, in a navigation device that allows a user to set a default value of a display attribute or a navigation device of a different model, the received display attribute may already be used as a default value for normal map display. In such a case, it may be determined whether or not the received display attribute and the default value are the same, and if they are the same, the display attribute may be changed to a different color, size, line type, or the like and highlighted. .

In this embodiment, the external storage device 2
5 and the recording medium to be read correspond to road data storage means, and the display device 26 and the control circuit 30 correspond to display means. The operation switch group 22 and the remote controller 23
a, the control circuit 30, and the display device 26 correspond to a selection unit and a handwritten data input unit, and the mobile phone connection device 24 and the mobile phone 32 correspond to a transmission unit and a reception unit. The route calculation process in the control circuit 30 corresponds to a process as route calculation means.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a navigation device as a map display device according to an embodiment.

FIG. 2 is a diagram illustrating an example of communication between navigation devices.

FIG. 3 is a diagram illustrating a road selection method.

FIG. 4 is a diagram illustrating a display attribute selection screen and a handwriting data input screen.

FIG. 5 is a diagram illustrating information communicated between navigation devices.

[Explanation of symbols]

1, 1a, 1b Navigation device 21 Position detector 21a GPS receiver 21b Gyroscope 21c Acceleration sensor 21d Geomagnetic sensor 22 Operation switch group 23a Remote controller 23b Remote controller sensor 24 Cellular phone connection device 25 External storage device 26 Display device 27 Speaker 28 Microphone 29 Vehicle signal I / O 30 Control circuit 32 Cell phone 42 Non-selected road 44 Selected road 46 Handwritten data 48 Selection cursor 50 Pop-up menu 52 ... thickness selection menu 54 ... color selection menu 56 ... line type selection menu 58 ... handwriting input cursor

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C032 HC08 HC11 HD12 2F029 AA01 AA07 AB01 AB07 AB13 AC02 AC08 AC14 AC18 5H180 AA01 AA21 BB05 BB12 BB13 FF04 FF05 FF13 FF22 FF25 FF27 FF33 FF35

Claims (7)

[Claims] 1. A map display device comprising: road data storage means for storing road data for displaying a road map; and display means for displaying a road map based on the road data stored in the road data storage means. And selecting means for selecting at least one road from a road map displayed on the display means in accordance with a user operation, and selecting data, which is information on the road selected by the selecting means, from another map. Transmitting means for transmitting to the display device; and receiving means for receiving the selection data from another map display device, wherein the display means selects the selected road when a road is selected by the selecting means. In the case where the selected data is received by the receiving unit, the road data is stored in the road data storage unit corresponding to the selected data. A map display device, wherein a display of a road based on stored road data on the display means is displayed so as to be distinguishable from other roads. 2. The map display device according to claim 1, wherein the road data is data representing a road as a link, and a link ID for specifying the link as the selection data.
A map display device characterized by using: 3. The map display device according to claim 1, wherein the selection means is capable of designating a display attribute of the selected road on the display means in accordance with a user operation; A map display device, wherein the display means displays the corresponding road with the display attribute when the selection data includes the information on the display attribute. 4. The map display device according to claim 1, wherein said transmission means transmits map display information indicating a display state of a map displayed on said display means, and said reception means Receiving the map display information, wherein the display unit displays the road map based on the map display information. 5. The map display device according to claim 1, further comprising: handwritten data for inputting data handwritten in response to a user operation on a road map displayed on said display means. Input means, the transmitting means transmits handwritten data input from the handwritten data input means, the receiving means receives the handwritten data, and the display means, the handwritten data received by the receiving means A map display device for displaying data. 6. The map display device according to claim 1, further comprising: obtaining a route to a destination based on the map data stored in the map data storage means, and displaying the obtained route on the display means. Wherein the route calculating means obtains a route to the destination on the premise that the road according to the selection data received by the receiving means is included in the route. Display device. 7. A program for causing a computer to function as the map display device according to claim 1.