JP2000010473A - Navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device capable of simultaneously discriminating and displaying any data even in the case characters and symbols overlap. SOLUTION: This device has a map database 5 which stores the map data including the characters and symbols displayed on a map, a deciding means 6 which decides the overlaps between the characters and symbols displayed on the map and a different color imparting means 7 which extracts the overlap portions between the characters and symbols and imparts the color different from the colors of the characters and symbols to these portions when the presence of the overlaps is decided. The overlap portions between the characters and symbols imparted with such color are displayed together with the characters and symbols on the map.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device mounted on a vehicle, for example, and more particularly to a navigation device for displaying displayed characters and symbols in a legible manner.

[0002]

2. Description of the Related Art FIG. 12 is a diagram showing a configuration of a conventional navigation apparatus. In the figure, 101 is a user operation analyzing means for analyzing a user operation, 102 is a route calculating means for calculating a route of a destination, 103 Is route storage means for storing the calculated route. Further, 104 is route guidance means for guiding the obtained route, 105 is map drawing means for drawing a map for screen display, 106 is current position calculation means for calculating the current position based on GPS data or the like, 10
Reference numeral 7 denotes a map match processing means for executing a map match process. Further, 108 is a data reading processing unit for reading necessary map data, 109 is a trajectory storage unit for storing the trajectory up to that point, 110 is a menu drawing unit for drawing for displaying a menu to the user, 111
Is a graphics processing means for performing, for example, graphic processing described later.

Next, the operation will be described. FIG. 13 is a flowchart for explaining the operation of the graphics processing unit 111. It is assumed that the initial state has a screen configuration as shown in FIG. 14A and includes a symbol attribute composed of a symbol such as a double circle and a 〒, and a character string attribute composed of a character string. Here, first, it is determined whether character strings overlap (step ST1301). If they overlap, the attribute of each overlapping character string is determined (step ST1302). If the attributes are different, the symbol attribute is prioritized, for example, as shown in FIG. 14 (b). For example, a place where a double circle overlaps with a circle is displayed with a double circle, and a place where 〒 and Kandabashi overlap. Displays 〒 (step ST1303). On the other hand, if the attributes are the same, the character strings are sorted in the depth direction (step ST1304). Further, it operates to select and buffer a character string close to the current position (step ST1305). Here, step ST13
When the processing of step 05 is executed, when the character strings overlap as shown in FIG. 14B, the character string near the current position is displayed. That is, as shown in FIG. 14C, Tokyo is displayed when Tokyo and Marunouchi overlap, and Nishi Ginza is displayed where Yaeshu and Nishi Ginza overlap.

[0004]

Since the conventional navigation apparatus is configured as described above, when characters and symbols overlap, one of them must be displayed preferentially.
There has been a problem that display data required by the user cannot always be obtained.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has as its object to provide a navigation device that can simultaneously display any data even when characters and symbols overlap. I do.

[0006]

According to the present invention, there is provided a navigation apparatus which stores a map database storing map data including characters and symbols displayed on a map, and an overlap between the characters and symbols displayed on the map. Determining means for determining, and when it is determined that there is an overlap between characters and symbols, extracting an overlapping portion between the characters and symbols, and providing a different color to the overlapping portion with a different color from the characters and symbols, And a display unit for displaying an overlapping portion between the characters and the symbols to which the colors are given together with the characters and the symbols on a map.

The navigation device according to the present invention includes a table for defining the color of the overlapping portion between characters and symbols according to the background color of the map, and selection means for selecting the background color of the map. The color of the overlapping portion between the characters and the symbols is selected from the table according to the background color of the map selected by the selecting means, and a different color from the characters and the symbols is given to the overlapping portion.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1 FIG. FIG. 1 is a block diagram showing a configuration of a navigation device according to Embodiment 1 of the present invention.
1, 1 is an input device (selection means) such as a keyboard or a pointing device for inputting a destination, 2 is a storage device such as a map database for storing information necessary for route search and guidance, and 3 is a device for guiding a route. C to display
A display device as a display means such as an RT or a liquid crystal panel;
Is an arithmetic unit that controls these devices to execute route search processing and guidance processing.

The storage device 2 has a map database 5. The map database 5 stores map data necessary for route search and guidance. The map data includes characters (for example, Marunouchi) and symbols (for example, 〒) displayed on the map.

The arithmetic unit 4 includes a judging means 6 and a different color giving means 7. The judging means 6 judges the overlap between characters and symbols displayed on the map. When it is determined that there is an overlap between the characters and the symbols, the different color imparting means 7 extracts the overlapping portion between the characters and the symbols and gives the overlapping portion a color different from the character or the symbol.

Next, the operation will be described. FIG. 2 is a flowchart showing the operation of the navigation device according to the first embodiment. First, the judging means 6 judges the overlap between characters and symbols displayed on the map (step ST).
201). That is, the overlap determination is performed for all the character strings displayed on the display device 3. For example, assuming that two character strings have start points and end points as shown in FIG. 3, x1s ≦ x2e ≦ x1e ≦ x2e or x1s ≧ x2s ≧
x1e ≧ x2e, and y1s ≦ y2s ≦ y1e ≦ y2e or y1s ≧ y2s ≧
When the condition of y1e ≧ y2e is satisfied, the overlap determination is established.
For example, if "Hyogo", "Mita", "Miwa", and "Mita Station" are character strings a, b, c, and d, respectively, the character strings are determined as shown in FIG. Row c "Miwa"
It can be seen that are overlapped.

Next, data A and data B, which are independent character data, as shown in FIG. 5, for example, are obtained from the coordinates of the overlapping characters, for example, the overlapping character strings c and b, by the different color providing means 7. (Step ST20)
2).

Next, as shown in FIG. 6, data C is created by ANDing data A and data B (step ST203).

Next, as shown in FIG. 7, the data C is given a color different from the colors of the data A and the data B in the type, luminance, brightness, and the like (step ST204), and the data A overlapping the data C is added. , B (step ST2)
05).

As described above, according to the first embodiment, when characters A and B overlap, the overlapping portion is displayed in a different color, so that the user can distinguish both data and simultaneously. The effect of being able to obtain is obtained. Similar effects can be obtained not only between characters but also between symbols and between characters / symbols by displaying overlapping portions in different colors. Also, since a color is specified for the data C indicating the overlapping portion and then overwritten on the data A and B,
Drawing processing becomes easy.

Embodiment 2 FIG. 8 is a block diagram showing a configuration of a navigation device according to a second embodiment of the present invention. The storage device 2 includes a table 8 for defining the color of the overlapping portion between characters and symbols according to the background color of the map. This differs from that shown in FIG. The configuration of the table 8 is shown in FIGS. In these figures, numbers and alphabets represent the types of colors.

Next, the operation will be described. FIG. 11 is a flowchart showing the operation of the navigation device according to the second embodiment. That is, when the background color of the map is selected by the input device 1, the different color providing means 7 selects the color of the overlapping portion between the characters and the symbols from the table 8 according to the background color of the selected map, and selects the overlapping portion. Is given a color different from the character / symbol (step ST110).
1). For example, in the example of FIG. 10, when the background color is 1, the color of the overlapping portion is E, but when the background color is switched to 2, the color of the overlapping portion is F.

As described above, according to the second embodiment, the overlapping portion is switched and displayed according to the background color, so that it is possible to avoid the situation where the overlapping portion becomes difficult to see due to the background color. can get.

[0019]

As described above, according to the present invention, when there is an overlap between characters and symbols, an overlap portion between the characters and symbols is extracted, and a color different from the character and symbol is assigned to the overlap portion. Since the data is displayed in such a manner, even when characters and symbols overlap, there is an effect that any data can be displayed while being distinguished at the same time.

According to the present invention, since the color of the overlapping portion between characters and symbols is selected according to the background color of the selected map, the situation where the overlapping portion becomes difficult to see due to the background color is avoided. There is an effect that can be.

[Brief description of the drawings]

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

FIG. 2 is a flowchart showing an operation of the navigation device according to the first embodiment of the present invention.

FIG. 3 is a diagram for explaining overlap determination of the navigation device according to the first embodiment of the present invention.

FIG. 4 is a diagram showing an example of overlap determination of the navigation device according to the first embodiment of the present invention.

FIG. 5 is a diagram showing an operation of a different color providing means of the navigation device according to the first embodiment of the present invention.

FIG. 6 is a diagram illustrating an operation of a different color providing unit of the navigation device according to the first embodiment of the present invention.

FIG. 7 is a diagram illustrating an operation of a different color providing unit of the navigation device according to the first embodiment of the present invention.

FIG. 8 is a block diagram showing a configuration of a navigation device according to a second embodiment of the present invention.

FIG. 9 is a diagram showing a configuration example of a table of the navigation device according to the second embodiment of the present invention.

FIG. 10 is a diagram showing a configuration example of a table of a navigation device according to a second embodiment of the present invention.

FIG. 11 is a flowchart showing an operation of the navigation device according to the second embodiment of the present invention.

FIG. 12 is a block diagram showing a configuration of a conventional navigation device.

FIG. 13 is a flowchart showing the operation of a conventional navigation device.

FIG. 14 is a diagram showing a display example of a conventional navigation device.

[Explanation of symbols]

1 input device (selection means), 3 display device (display means), 5 map database, 6 determination means, 7 different color provision means, 8 tables.

Claims (2)

[Claims] 1. A map database for storing map data including characters and symbols displayed on a map, a judging means for judging an overlap between characters and symbols displayed on the map, and a character When it is determined that there is an overlap between the symbols, the overlapping portion between the characters and symbols is extracted, and the extracted overlapping portion is provided with a different color providing unit that gives a color different from the character / symbol. A navigation device comprising: display means for displaying, on a map, an overlapping portion between the colored characters and symbols together with the characters and symbols. 2. A table for defining a color of an overlapping portion between characters and symbols according to a background color of a map, and a selection means for selecting a background color of the map, wherein the different color providing means is selected by the selection means. 2. The navigation device according to claim 1, wherein a color of an overlapping portion between characters and symbols is selected from a table according to the background color of the map, and a color different from the character and symbol is assigned to the overlapping portion.