JP2000275049A - On-vehicle navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle navigation device capable of quickly retrieving a target place. SOLUTION: The superimposed display of a predetermined reduction scale map and grid lines is scrolled and displayed until the target place is included in a display screen at the time of retrieving the target place by a display control means 27. When the display screen including the target place is attained by the display control means, an area including the displayed target place is selected by a grid area surrounded by the grid lines displayed in the display screen by an area selection means 28 and a map inside the selected grid area is enlarged and displayed by an enlarged display means 29. Thus, the target place is included in the enlarged and displayed map and the target place is easily retrieved at a high speed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle navigation device, and more particularly, to an on-vehicle navigation device for easily searching a map including a destination.

[0002]

2. Description of the Related Art In a conventional in-vehicle navigation system, when searching for a destination such as a destination, a search-only menu screen shown in FIG. 5 is opened, and the search-only menu screen is displayed in the order of "aiueo". From the prefecture name display, search for and select the prefecture name first, then the city name,
Searches and selections are made in the order of town name, village name, and street address. When a specific destination is determined by this operation, the map is displayed.

[0003]

However, according to the operation of the destination search by the conventional in-vehicle navigation device,
After opening the search-only menu screen as described above, it is necessary to sequentially select a prefecture name and a municipal name. For this reason, there is a problem that the menu is first switched to a search-only menu screen, and the map is not displayed.

Further, since the menu screen dedicated to searching for a destination is normally displayed in the order of "aiueo", in order to reach the prefecture name, city name, town name, and village name to which the destination location belongs, the displayed candidate is displayed. There was a problem that the user had to scroll through the list and find them one after another.

[0005] In addition, there is a problem that the search must always be performed based on the prefecture name, and the search cannot be performed based on the city name, the town name, and the village name. Therefore, there is a problem that it takes time to search for a destination.

An object of the present invention is to provide an in-vehicle navigation device capable of quickly searching for a destination.

[0007]

According to the present invention, an on-vehicle navigation device of the present invention scrolls and displays a superimposed display of a predetermined reduced scale map and a grid line until a destination is included in a display screen when the destination is searched. Display control means, area selecting means for selecting an area including the destination by a grid area surrounded by grid lines displayed on the display screen, and enlarged display control for enlarging and displaying a map in the selected grid area Means are provided.

According to the on-vehicle navigation device of the present invention, the display control means scrolls and displays the superimposed display of the predetermined scale map and the grid lines until the destination is included in the display screen when the destination is searched. The area including the displayed destination is selected by the area selecting means by the grid area surrounded by the grid lines displayed on the display screen, and the map in the selected grid area is enlarged by the enlarged display control means. Is displayed. As a result, the destination can be easily and quickly searched on the map, which is very convenient when the destination is specified.

In the on-vehicle navigation device according to the present invention, the scrolling by the display control means is performed by sequentially switching a map in a predetermined range.

According to the vehicle-mounted navigation device of the present invention, since the scrolling by the display control means is performed by sequentially switching the map in the predetermined range, the map can be switched at the time of searching for the destination at a high speed, and the destination can be changed. The search time can be reduced.

In the on-vehicle navigation apparatus according to the present invention, there is provided a grid size changing means for changing the size of the grid formed by the grid lines displayed by the display control means to a desired size, and the grid area selection by the area selecting means is changed. It is characterized in that it is performed by a grid region surrounded by the grid lines indicated by.

According to the on-vehicle navigation device of the present invention, the grid size based on the grid lines displayed by the display control means can be set to a desired size by the grid size changing means, and the grid area selection by the area selecting means can be performed by the grid size. Searches from cities, towns, and villages can also be performed because they are performed by the grid area surrounded by the changed grid lines.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An on-vehicle navigation device according to the present invention will be described below with reference to an embodiment. FIG. 1 is a block diagram showing a configuration of an in-vehicle navigation device according to an embodiment of the present invention.

An on-vehicle navigation device 10 according to one embodiment of the present invention includes a vehicle position processing device 13 which receives a signal from a GPS receiver 11 and an autonomous navigation sensor 12 and calculates the position of the own vehicle. Device 14, a reading device 16 for reading map data from a map database device 15 on which map data is recorded, a key switch 18a for instructing a destination search, and a key for indicating that the destination is not included in the display screen Switch 18b,
Key switch 1 indicating that the grid size is not appropriate
9a, an input device 17 including a key switch 19b for instructing selection of an area by a grid line, a video display processing device 20 including a graphic controller 22, a video RAM 21 and a display device 23, and an audio output device 24. .

The on-vehicle navigation device 10 further includes:
A controller 26 including a central processing unit cooperating with a memory 25 is provided. Upon receiving the vehicle position information output from the vehicle position processing unit 14, the vehicle position display based on the vehicle position information is displayed under the control of the controller 26. The display processing device 20 causes the display device 23 to display the data on the display device 23, and reads the map data in a range including the vehicle position from the map database device 15 under the control of the controller 26.
6, receiving the read map data,
The map based on the map data is configured to be displayed on the display device 23 by the video display processing device 20.

The in-vehicle navigation device 10 controls the guidance route from the departure point to the destination output from the input device 17 under the control of the controller 26 based on the route search function. In the meantime, there is provided a voice output device 24 for guiding the name of the intersection, the direction of travel, and the like by voice using a voice output device.

Here, when the destination search is instructed by the key switch 18a, the controller 26 scrolls and displays the superimposed display of the predetermined scale map and the grid lines until the destination is included in the display screen. Display control means 27, an area selection means 28 for selecting an area including the destination place by a grid area surrounded by grid lines displayed on the display screen, and a map in the selected grid area is enlarged and displayed. An enlarged display control means 29 is functionally provided.

The controller 26 further includes a grid size changing means 30 for changing the size of the grid formed by the grid lines displayed by the display control means 27 to a desired size. This is performed by a grid area surrounded by grid lines whose grid size has been changed.

The operation of the on-vehicle navigation device according to the embodiment of the present invention configured as described above will be described with reference to the flowchart of FIG.

In the on-vehicle navigation device 10, it is checked whether or not a destination search instruction is given by the key switch 18a (step S1).
If it is determined in step 1 that the destination search is not instructed, another routine in the normal navigation device is executed. When it is determined in step S1 that the destination search is instructed, map data of a predetermined scale is read from the map database 15 (step S2), and then a map and grid lines based on the read map data are read. The display is superimposed on the screen of the display device 23 (step S3).

After step S3, it is checked whether or not the destination displayed in the map displayed on the screen of the display device 23 is included (step S4). In step S4, a sound indicating whether the destination displayed in the map displayed on the screen includes the destination may be output from the sound output device 24. When it is instructed by the key switch 18b in step S4 that the destination is not included in the map displayed on the screen of the display device 23, the map is scrolled after step S4 (step S5). Step S2 is repeated until the destination is included in the map displayed on the screen of the display device 23.

Here, the operation of steps S1 to S5 functionally corresponds to the operation of the display control means 27.

The scrolling of the map in step S5 may be a normal sequential scroll, but a map in a predetermined range is sequentially switched and displayed so as to turn over the pages of the atlas. When scrolling is performed in this manner, map switching in the search for a destination can be performed at high speed.

An example of the display on the screen of the display device 23 when the destination is included in the map displayed on the screen of the display device 23 is as shown in FIGS. In FIGS. 3 and 4, a frame indicated by a thick line indicates a selected region described later.

After step 4, it is checked whether the grid size of the grid lines is appropriate (step S6). In step S6, a sound indicating whether the lattice size is appropriate may be output from the sound generation device 24. If the grid size is not appropriate in step S6, an instruction is given by the key switch 19a. The grid size is changed based on this instruction (step S7), and the process is repeated from step S6 until the grid size becomes an appropriate size. By changing the grid size, you can choose from cities, towns, or villages.

Here, steps S6 and S7
Function functionally corresponds to the lattice size changing means 30.

When the grid size becomes an appropriate size, a grid area surrounded by grid lines including the destination is selected after step S6 (step S8). The selection of the grid area including the destination is made by specifying the grid area surrounded by the grid lines including the destination with the key switch 19b. Here, the operation of step S8 functionally corresponds to the area selecting means 28.

After step S8, the enlarged map data in the selected area is read from the map database 15 (step S9), and the enlarged map of the area selected in step S8 is displayed on the screen of the display device 23. Is displayed (step S10).

After step S10, it is checked whether or not there is more detailed map data (step S10).
11) If more detailed map data is present, the process is repeated from step 6 until the detailed map data does not exist. Therefore, the display device 23
A detailed map in which the area including the destination is enlarged is displayed on the screen, and the processing ends.

Here, steps S9 to S11
Function functionally corresponds to the enlarged display means 29.

The above-described on-vehicle navigation device 1
At 0, an enlarged view of the selected area may be displayed on one screen using a two screen display. In this case, when an area is selected next time, if an area is selected on this enlarged screen, an enlarged view is displayed on the other screen, and the area can be selected again smoothly.

[0032]

As described above, according to the in-vehicle navigation device according to the present invention, a search can be performed using a map when searching for a destination, and the search can be performed easily and at high speed. The effect of eliminating the need to prepare a screen is obtained. In addition, by changing the grid size, it is possible to obtain an effect that a search can be performed from a city, a town, and a village.

[Brief description of the drawings]

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

FIG. 2 is a flowchart for explaining an operation of the on-vehicle navigation device according to the embodiment of the present invention;

FIG. 3 is a schematic diagram showing an example of a display on a display device in the on-vehicle navigation device according to one embodiment of the present invention.

FIG. 4 is a schematic diagram showing another example of the display on the display device in the in-vehicle navigation device according to the embodiment of the present invention.

FIG. 5 is a schematic diagram of a display on a display device in a conventional navigation device.

[Explanation of symbols]

 Reference Signs List 10 navigation device 14 vehicle position processing device 15 map database device 16 reading device 17 input device 18a, 18b, 19a, 19b key switch 23 display device 24 audio output device 26 controller 27 display control means 28 area selection means 29 enlarged display means 30 grid Resize means

Claims (3)

[Claims] 1. A display control means for scrolling and displaying superimposed display of a predetermined scale map and a grid line until a destination is included in a display screen at the time of searching for a destination, and an area including the destination, An on-vehicle vehicle, comprising: an area selecting means for selecting by a grid area surrounded by grid lines displayed on a display screen; and an enlarged display control means for enlarging and displaying a map in the selected grid area. Navigation device. 2. The in-vehicle navigation device according to claim 1, wherein the scrolling by the display control means sequentially switches a map in a predetermined range. 3. A vehicle navigation system according to claim 1, further comprising a grid size changing means for changing a size of a grid formed by the grid lines displayed by the display control means to a desired size, and selecting a grid area by the area selecting means. Is performed by a grid region surrounded by grid lines whose grid size has been changed.