JP2910410B2 - Map data display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a map data display device for displaying additional information effective for a user on map data read from a recording medium on which map data is digitally recorded.

[0002]

2. Description of the Related Art A display device for displaying map data read from a recording medium, for example, when mounted on a vehicle and used as a navigation system, displays a current position of the vehicle and a road map. When moving to a target place using this system, it is known that it is effective to display not only the target place but also a target place on the way with a mark, that is, a mark. It is also well-known that not only can this be used for navigation, but also when searching for a target place on a map, for example, if a target landmark is displayed before this search, the search time can be reduced with the landmark as the target. It is.

[0003]

By the way, in the mark display indicating the target, each target point is displayed by a single mark display.

However, when displaying a plurality of stored mark points on the same display screen, it is sometimes difficult to understand the difference in the meaning of the display of each mark. In order to solve such a problem, it is possible to solve the problem by a function of assigning a plurality of character names to individual mark points via a keyboard or the like, but in this method, a device and a processing function for inputting character names are used. Since it becomes large-scale, it becomes difficult to perform input in a driver's seat, particularly for a display device mounted on a vehicle. In addition, since the mark displayed on the map is a single mark display, even if the mark name is displayed simultaneously with the mark display, read and confirm the meaning of the mark point at a glance. Is still difficult.

Accordingly, the present invention has been made in view of such circumstances, and has been developed in order to clearly distinguish the difference between the display of a plurality of mark points on a map displayed on a display screen. It is an object of the present invention to provide a map data display device capable of changing a display of a point to distinguish the point.

[0006]

A map data display device according to the present invention is a map data display device for reading and displaying map data from a recording medium. Map display means for displaying a map by switching the scale level in accordance with a signal; storing position information and a symbolic figure corresponding to the position in accordance with each data from the input means and the map display means; When displaying, the stored position information and the corresponding symbol / graphic data are converted into display output data and output, and the symbol / graphic display means, the map data from the map display means and the symbol / graphic display means Synthesizing means for synthesizing the output data of the above, and displaying the symbol graphic at a position indicated by the position information on the map, wherein the symbol graphic display means has already Symbol graphic constant storage location and stores the changed arbitrarily, by becoming be displayed, to solve the problems described above.

Here, the map display section includes, for example, a sensor section for detecting a current position, a map switching circuit for outputting a signal for switching a map to be displayed according to map switching information from input means, and a map switching circuit. A map data selection circuit for selecting a map area satisfying the conditions based on the output signals from the sensor unit and each output signal from the sensor unit; a CD-ROM drive circuit for controlling the drive in accordance with the output from the map data selection circuit; -CD-R for reading map data from ROM
It comprises an OM reading circuit, a map data conversion circuit and a map display circuit.

The map data display device reads out information stored in the symbol graphic display means in response to a predetermined operation, reads character information near a corresponding position from the map display means as a name, and displays a list with the symbol graphic. Solves the above-described problem.

Here, the symbol / graphic display means includes a storage position input means for receiving the position information specified by the input means, a symbol / graphic designation means for receiving the symbol graphic specified by the input means, and the storage position. A storage unit for storing information from the input unit and the symbol / graphic designating unit; and a display position of the information from the storage unit is determined according to scale level information from the map display unit to create a symbol / graphic display screen. It comprises a symbol graphic display drawing creating means.

In this map data display device, for example, the CD-ROM readout circuit provided in the map display means fetches character information at a nearby position corresponding to the information from the storage means, and displays the list together with the symbol graphic. Let me.

The storage means assigns a number and a mark number to each point to be marked, and uses them as addresses. Further, for example, the coordinates X and Y of the mark point corresponding to the mark number and the symbol number which specifies the shape of the symbol by the number are stored as memory contents.

The symbol / graphic display means solves the above-mentioned problem by arbitrarily changing and storing the symbol / graphic at the storage position which has already been set and displaying it.

The symbol / graphic display means extracts only the same symbol / graphic in response to an instruction from the input means and outputs a list display data of names assigned to the symbol / graphic on the display screen, The above-mentioned problem is solved.

Here, the position information displayed in this list display is the name input by the user as it is in the memory 1.
In addition to writing in 2c, the map information near the mark point is automatically imported as the name.

Further, by selecting a symbol graphic displayed at the time of displaying a list of the set symbol graphics, the display is switched to a map display, and the selected symbol graphic is displayed at a corresponding position on the map. The above-mentioned problem is solved.

Further, the above-mentioned problem is solved by extracting only the same symbolic figure in response to an instruction from the input means, and erasing the extracted symbolic figure as one unit.

[0017]

According to the present invention, there is provided a map data display device for reading map data from a recording medium and displaying the map data. The map data display device includes: an input means for inputting various data; Map display means for switching and displaying a map; storing position information and a symbolic figure corresponding to the position in accordance with each data from the input means and the map display means; and displaying the position information when displaying the map. A symbol / graphic display means for converting each data of the corresponding symbol / graphic into output data for display and outputting the data, and a synthesizing means for synthesizing the map data from the map display with the output data from the symbol / graphic display. Then, the map and the symbol graphic are simultaneously displayed on the display screen of the display device.

The map data display device uses the symbol graphic display means to combine the map data and output data supplied from the map display means and the symbol graphic display means with the symbol graphic attached to the position information. Is specified, the symbol graphic at the storage location specified at the time of editing is arbitrarily changed, and only the same symbol graphic is extracted according to the instruction from the input means, and the name assigned to the display screen in correspondence with the symbol graphic List display, switch from a screen for selecting a symbol figure to a map display screen, display the selected symbol figure at a position corresponding to the map, or extract only the same symbol figure,
The extracted symbolic figures can be collectively erased as one unit.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a map data display device according to the present invention will be described below with reference to the drawings.

The map data display device according to the present invention will be described with reference to the schematic block configuration shown in FIG. Here, the map data is an optical disk, such as a CD-R, which can have a large amount of digital data.
OM is written. Also, an example will be described in which this map data display device is used in a so-called navigation system that receives a radio wave from a GPS (Global Positioning System) satellite and moves a car while displaying and confirming a current position. .

The map data display device is a key operation section 10 which is an input means for inputting various data, and a map display means for displaying a map by switching the scale level in accordance with a signal from the key operation section 10. The map display unit 11 stores, in accordance with each data from the key operation unit 10 and the map display unit 11, position information and a symbol graphic corresponding to the position, and stores the stored position when displaying a map. A symbol display unit 12 which is a symbol graphic display unit for converting information and corresponding data of the symbol graphic into output data for display, and outputting the map data from the map display unit 11 and the output from the symbol display unit 12 A video synthesizing circuit 13 which is a synthesizing means for synthesizing data, and an output from the video synthesizing circuit is displayed on a display 14.

Further, the operation of each section will be described with reference to FIG. For information from a CD-ROM (not shown), a display mode is selected using, for example, a joystick or the like provided in the key operation unit 10. As the map data, a key input signal corresponding to the selection operation is output to the map display unit 11, and the recorded information is read.

The map display section 11 includes a sensor section 11a for detecting a current position, a map switching circuit 11b for outputting a signal for switching a map to be displayed according to map switching information from the key operation section 10, and , The map switching circuit 11
b. A map data selection circuit 11c for selecting a map area satisfying the conditions based on the output signals of b and the respective output signals from the sensor section 11a, and a CD-ROM drive for controlling the drive in accordance with the output from the map data selection circuit 11c. Circuit 11d
And a CD-R for reading map data from a CD-ROM
It comprises an OM readout circuit 11e, a map data conversion circuit 11f and a map display circuit 11g.

As described above, the sensor unit 11a receives a radio wave from, for example, a GPS satellite, detects the current position, and supplies information to the map data selection circuit 11c. Also,
The map switching circuit 11b outputs a signal for switching a map to be displayed according to the map switching information from the key operation unit 10 to the map data selection circuit 11c.

A map area that satisfies the conditions is selected by a map data selection circuit 11c based on the output signal of the map switching circuit 11b and each output signal from the sensor section 11a, and the CD-ROM drive is performed in accordance with the output from the circuit 11c. Circuit 11
d drives the CD-ROM to rotate, and the CD-R
The OM read circuit 11e is controlled. In the CD-ROM read circuit 11e, the optical pickup is controlled to read the map data recorded in the area where the map data satisfying the above condition is written. This map data is sequentially subjected to signal processing through a map data conversion circuit 11f and a map display circuit 11g, and a map to be displayed on the display 14 is created.

The symbol display section 12 includes a mark point input section 12a which is a storage position input means for taking in position information specified by the key operation section 10, and a symbol figure specified by the key operation section 10. A symbol designation unit 12b, which is a symbol / graphic designation unit to be taken in, a memory 12c for storing information from the mark point input unit 12a and the symbol designation unit 12b, and information from the memory 12c to the map display unit 11 It comprises a mark symbol display circuit 12d which is a symbol graphic display drawing creating means for determining a display position according to the scale level information and creating a symbol graphic display screen.

In the symbol display section 12, when a signal for marking a point on the map displayed by the user from the operation of the key operation section 10 is input, the coordinate data (X, Y). The mark point input unit 12a is supplied so that information from the map data selection circuit 11c can be referred to. At the same time, the symbol designating unit 12b selects a symbol that gives meaning to the mark point. These pieces of information are handled as one set, supplied to the memory 12c, and stored.

The contents of the memory 12c are as follows:

[0029]

[Table 1]

The coordinates (X, Y) of the mark point as shown in FIG.
And symbols are stored in numbers. Mark number M ₁ ~M _n shown in Table 1 are those corresponding to the address. By specifying this mark number, the symbol contents N _{1 to} N _n displayed at the corresponding mark point are read.

When the symbol is already set on the map, the symbol data read from the memory 12c is supplied to the mark symbol display circuit 12d for displaying the symbol. Also, the map data selection circuit 11c
Supplies information on the display area of the map selected by the user to be currently displayed to the mark symbol display circuit 12d. The mark symbol display circuit 12d is configured with the position information and the symbol indicating the meaning of the mark point in accordance with the mark point of the display area of the displayed map while determining whether or not the symbol is included in the selected area. Create a display screen.

The output from the mark symbol display circuit 12d and the map data from the map display section 11 are supplied to the video synthesizing circuit 13, respectively. The image synthesizing circuit 13 synthesizes the map and the symbol having a meaning at the mark point at the same time and displays them on the display 14 (for example, FIG. 3).
See).

Next, the operation procedure will be described with reference to the flowchart shown in FIG. FIG. 1 is referred to as needed. CD using map data display
-Start displaying map data from ROM.

In step S10, the map switching information is transmitted via the map switching circuit 11b to the map data selection circuit 11c in response to a key operation of the externally provided key operation unit 10 shown in FIG.
To supply. The map data selection circuit 11c detects a display range on the basis of the map switching information as to which range area on the map is to be displayed, and proceeds to step S11.

In step S11, the coordinates of the mark point stored according to the key operation of the key operation unit 10 are detected. Here, as the coordinates of the mark point, the coordinates detected by the mark point input unit 12a shown in FIG. 1 are stored in the memory 12c in advance, and the stored information is stored in the memory 12c.
c is accessed to detect the coordinates, and the process proceeds to step S12.

In step S12, it is determined whether or not the coordinates of the detected mark point are included in the display range of the selected map. For this determination, the map data selection circuit 1
1c supplies information on the display range to the mark symbol display circuit 12d. Mark symbol display circuit 12d
Determines whether the coordinates of the mark point read from the memory 12c are included in the display range based on this information. If not included in the display range, the process proceeds to step S15. If it is included in the display range, the process proceeds to step S13.

In step S13, information about the symbol number N assigned to the mark point shown in Table 1, ie, what the symbol shape represents, is obtained from the memory 12c. The information from the memory 12c is supplied to the mark symbol display circuit 12d, and the process proceeds to step S14.

In step S14, a drawing screen is created by displaying mark points to be displayed on the map and symbols to be displayed at the mark points. At this time, the map data selection circuit 11
The information is created with reference to the information on the map selected from c, and the process proceeds to step S15.

In step S15, the mark number stored in the memory 12c, that is, the memory address is accessed, and the flow advances to step S16. In step S16, it is determined whether or not all the information of the mark points stored in the memory 12c has been accessed. If the access to all the information in the memory 12c has not been completed yet, the process returns to step S11 to execute the subsequent routine. When all the data stored in the memory 12c has been accessed, the creation of the display screen of the mark symbol at the scale of the selected map ends.

The mark symbol display screen created in this way is combined with the map display screen and displayed on the display 14. The actual display screen can display, for example, symbols such as "coffee cup", "basket" and "tennis racket" on the map shown in FIG. The symbols are associated with the symbol numbers as described above.

By giving a meaning to the symbol and displaying the symbol of the shape corresponding to the mark on the map, the user can determine where the coffee shop, shopping or tennis court is located in accordance with the symbol. You can check at a glance.

The map data display device of the present invention has an editing function so that the information for displaying the mark point can be used more efficiently. This function will be described with reference to the display screens shown in FIGS. Here, this editing function is referred to as mark editing.

When the key operation unit 10 is operated, the map data display device displays a mark editing menu shown in FIG. 4 on a screen. The items in the mark editing are, for example, 5 of symbol change, group list, deletion, mark map and end.
Display items. An editing operation is performed by selecting one of these.

When the symbol change is selected in the mark editing, the information stored in the memory 12c is displayed in a list in the order of the mark numbers as shown in FIG. Next, a mark number whose symbol is to be changed is selected. In FIG. 5, a cursor 20 indicating that the mark number 2 is selected is indicated by a finger.
Indicated by. The user selects and changes a desired symbol from the symbol indicating the tennis court of mark number 2.

In this map data display apparatus, there are twelve symbols prepared in advance, for example, as shown in FIG.

Next, when a group list is selected, twelve symbols shown in FIG. 8 are displayed, and an inquiry is made as to which symbol is to be selected. Here, when the user selects “coffee cup”, as shown in FIG. 6, the location information of the coffee shop stored in the memory 12c already set is extracted and displayed on the screen. The position information displayed at this time is, for example, the CD-ROM reading circuit 11e provided in the map display section 11 shown in FIG.
Character information at a nearby position corresponding to the information from c is fetched and displayed in a list with symbols. This capture can be done automatically.

The name given to the automatic mark point by the map data display device is, for example, a character at a nearby position corresponding to the information from the storage means in the CD-ROM read circuit provided in the map display means. The information is imported and displayed in a list with the symbolic figure.

The memory 12c assigns a number and a mark number to each point to be marked, and uses them as addresses.
Further, for example, the coordinates X and Y of the mark point corresponding to the mark number and the symbol number which specifies the shape of the symbol by the number are stored as memory contents. Therefore, as shown in the example, the mark number 1 is displayed as "near the new Takanawa Prince Hotel", the mark number 2 is displayed as "the vicinity of the Osaki station", and the last mark number 3 is displayed as "the vicinity of Kita Shinagawa". By selecting and displaying the required information in this way,
For example, it can also be used for searching where the nearest coffee shop is.

When erasing is selected, the multi-window is further cut off as shown in FIG. 7, and the user is asked in which mode the erasing is to be performed. These items include 3 shown in FIG.
There are three items (modes), “single erase”, “group erase”, and “all mark erase”. If you select “Single erase”,
While displaying a list of marks in the memory 12c, a mark to be deleted is selected. When the "single erasure" is completed, it is determined whether or not erasure is to be performed. If the erasure is to be continued, a mark to be erased is selected. To end the simple erase, select "Return" to exit this item.

When "delete group" is selected, all the set symbols shown in FIG. 8 are displayed. When a symbol to be erased is selected from these symbols, the mark number corresponding to the selected symbol number is erased. As described above, unnecessary information can be easily erased for each group by a single processing operation. Further, when "all mark deletion" is selected, all information in the memory 12c can be deleted. When these erasing operations are completed, select "RETURN" to exit this item.

When the item of the mark map shown in FIG. 4 is selected, a display screen similar to that when the above-described symbol change is selected is displayed. Next, when any of the display screens is selected, the display is switched to the map display screen,
At least the selected symbol graphic is displayed at a corresponding position on the map. Further, when there is another designated mark point in the switched map display screen, the map data display device simultaneously displays the symbols of the other mark points on the map display screen.

With this configuration, it is possible to display a symbol having a meaning at a mark point on a map. In addition, by selecting and extracting information on the mark point and editing it, the user can easily mark the position desired by the user without having to input a troublesome name of the mark point, and display the symbol in association with the mark. . Thereby, the information management of the map data display device can be utilized more efficiently.

[0053]

As is apparent from the above description, according to the map data display device of the present invention, in a map data display device for reading and displaying map data from a recording medium, an input for inputting various data is provided. Means, map display means for displaying a map by switching the scale level in accordance with a signal from the input means, position information and a symbol corresponding to the position in accordance with each data from the input means and the map display means Symbol graphic display means for storing graphics and converting the stored position information and corresponding symbol graphic data into display output data and outputting the data when displaying the map; and a map from the map display means. A synthesizing means for synthesizing data and output data from the symbol graphic display means, displaying the symbol graphic at a position indicated by the position information on a map, The symbol graphic display means can arbitrarily change and store the symbol graphic at the storage position that has been set, and display the symbol graphic. Symbols can be easily set or changed.

[0054]

[0055]

[0056]

[0057]

[0058]

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic block configuration of an embodiment of a map data display device according to the present invention.

FIG. 2 is a flowchart illustrating a procedure for displaying a symbol on a map with the circuit configuration shown in FIG. 1;

FIG. 3 is a diagram showing an example of a display screen on which symbols are actually displayed on a map.

FIG. 4 is a diagram showing a menu when a mark is edited on the map data display device.

FIG. 5 is a diagram showing a mark screen stored at the time of editing a mark in the map data display device and a symbol attached to the mark, read from a memory and showing a display screen.

FIG. 6 is a diagram showing a display screen when a group list item is selected and a symbol “coffee cup” is selected at the time of mark editing in the map data display device.

FIG. 7 is a view showing a screen on which a deletion item is selected at the time of editing a mark in the map data display device, and a menu for selecting which deletion is to be displayed.

8 is a diagram showing a display screen displayed when group deletion is selected from the deletion menu shown in FIG. 7;

[Explanation of symbols]

 10 Key operation unit 11 Map display unit 12 Symbol display unit 13 ... Video synthesis circuit 14 Display

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Hirotaka Yamamoto 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (56) References JP-A-3-137681 (JP, A) JP-A Sho 62-151884 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G09B 29/10 G01C 21/00 G06T 1/00 G08G 1/0969

Claims (1)

(57) [Claims] 1. A map data display device for reading and displaying map data from a recording medium, comprising: input means for inputting various data; and a map for displaying a map by switching a scale level in accordance with a signal from the input means. Display means for storing position information and a symbol graphic corresponding to the position in accordance with each data from the input means and the map display means, and storing the stored position information and corresponding symbols when displaying a map. A symbol graphic display means for converting each data of the graphic into output data for display and outputting the data, and a synthesizing means for synthesizing the map data from the map display means and the output data from the symbol graphic display means, The symbol graphic is displayed at the position indicated by the above location information, and the symbol graphic display means arbitrarily changes and stores the symbol graphic at the storage position that has been set. And, the map data display device characterized by comprising as display.