JP2003130663A - Navigation device and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device and a program capable of recognizing what facilities exist in the designated direction without omission and easily. SOLUTION: The navigation device 100 lists facilities around one's own vehicle based on keywords (categories) inputted, calculates the angle difference in an absolute value between the direction designated by a user (traveling direction or leftward, for example) and the direction of each facility for all the facilities listed, displays them in order of increasing angle difference calculated, and displays only the facility which is in the range the both direction can be regarded approximately as being matched from the angle difference calculated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device which is installed in a vehicle and provides guidance to a destination and a program.

[0002]

2. Description of the Related Art Conventionally, a navigation device has a GPS.
(Global Positioning Systems) Receives the signal transmitted from the satellite to detect the current position of the vehicle, and based on the map data recorded in the recording device of the navigation device,
The detected current position of the own vehicle and the road shape of the map data are matched, and the current position of the own vehicle is displayed on the map of the navigation screen. Then, when the user sets a destination, etc., the recommended route to the set destination is searched based on the detected current position, and the searched route is displayed on the map of the navigation screen. Guide to the ground.

When searching for facilities around the current position or facilities up to the destination by the conventional navigation device, the user searches by keywords (genre) or the like, and then the region or the current position of the vehicle. I used the distance from as a key to narrow down. Furthermore, when determining a desired facility from the list of facilities searched and narrowed down, the user refers to the information indicating the direction of each facility with respect to the own vehicle position added to the list, and determines the desired facility. Was.

For example, the display screen 20a shown in FIG. 7 is shown as a list of facilities that have been searched and searched by using "convenience store" as a keyword and then narrowed down and ordered by using the distance from the current vehicle position as a key. To do.

A plurality of facility information 21a to 21h are displayed as a list on the display screen 20a shown in FIG. For example, the facility information 21a includes the facility name “Seven Δ × A
"Store", distance from current car position "200m", and
An arrow A indicating the direction of the facility with respect to the vehicle position is displayed.

Since the facility information 21a is the first data in the list sorted by the distance from the current own vehicle position as a key, the convenience store at the closest distance from the current own vehicle position is stored. It can be seen that it is.

Further, in the near future, as shown in FIG. 8, the current vehicle position B1 is set as the apex, and the current traveling direction of the vehicle is the central axis B.
There is also devised a navigation device that searches only facilities D1 to D8 that can be visited when the vehicle travels on the road indicated by reference sign C1 in the fan-shaped area B formed as 2.

[0008] In this case, the conventional navigation device described above forms the searched facilities on the basis of the current position and the traveling direction of the own vehicle after searching the facilities by the keyword etc. designated by the user (step S30). The facilities within the fan-shaped area B (step S31),
A list of the narrowed down facilities is displayed on the display screen (step S32).

[0009]

However, the conventional navigation device described above has the following problems. As in the past, after searching with a keyword, the distance from the current vehicle position is used as a key for narrowing down and sorting, so even if the facility is not in the traveling direction (or the direction specified by the user), The list is displayed if the position is closer to the position of the own vehicle, and the closer the position is, the higher the sort order is listed. Therefore, the user is in the traveling direction of the own vehicle (or the direction specified by the user). It was not easy to determine the facility.

Further, as in the conventional method, in the method of narrowing down only the facilities within the fan-shaped region formed based on the current position and the traveling direction of the vehicle, the calculation amount required for narrowing down and sorting becomes large and the fan-shaped Depending on the shape, search results may be omitted even for facilities located at a short distance from the current vehicle position. For example, the facility E along the road C2 shown in FIG. 8 is a facility that can be reached in the shortest time by changing the course from the present position of the vehicle to the right by approximately 90 degrees. Since it deviates from the central fan-shaped region B, the inconvenience that the list display may be omitted even if it is near the current vehicle position occurs.

An object of the present invention is to provide a navigation device and a program capable of easily grasping what kind of facility exists in a designated direction without omission.

[0012]

The invention according to claim 1 is
In a navigation device that constantly detects the current position of the vehicle and searches for a recommended route to the target facility, searches for a facility located within a predetermined area including the current position of the vehicle based on pre-specified conditions By the facility search means, the angle difference calculation means for calculating the angle difference between the direction from the current position of the own vehicle toward the facility searched by the facility search means, and the previously designated direction, and the angle difference calculation means. Ordering means for ordering the facility information searched by the facility searching means based on the calculated angle difference, and display control for displaying the facility information searched by the facility searching means based on the ordering by the ordering means Means and are provided.

In the navigation device for constantly detecting the current position of the own vehicle and searching for a recommended route to the target facility, the facility is located within a predetermined area including the current position of the own vehicle. , A facility search means for searching based on a pre-specified condition, an angle for calculating an angular difference between a direction from the current position of the vehicle toward the facility searched by the facility search means, and a predetermined direction A difference calculation means, a facility extraction means for extracting only those facilities whose angle difference calculated by the angle difference calculation means does not exceed a predetermined threshold value from the facilities searched by the facility search means, and the facility extraction means Display control means for displaying only the designated facilities.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION A navigation device 100 to which the present invention is applied will be described in detail below with reference to FIGS.

First, the structure will be described. FIG. 1 is a block diagram showing a main configuration of a navigation device 100 to which the present invention is applied. As shown in FIG. 1, the navigation device 100 includes a main body 10 including an automatic position detecting unit 11, a map information reading unit 12, a calculation executing unit 13, a remote controller light receiving unit 14, a GPS antenna 15, a display 20, a remote controller. It is configured by including 30 and the like.

The automatic position detecting section 11 is a GPS receiver 1
1a, gyro sensor 11b, vehicle speed pulse 11c
And so on. GPS receiver 11a is GP
GP including the absolute current position (latitude, longitude) information of the own vehicle by demodulating the GPS signal received by the S antenna 15
The S information is extracted, and the gyro sensor 11b detects the relative change amount in the moving direction of the own vehicle based on the detection result by various sensors (not shown) such as the built-in direction sensor and angle sensor, and the vehicle speed pulse 11c. Detects the current speed of the host vehicle by detecting a vehicle speed pulse signal output according to the rotation of the wheels.

The automatic position detector 11 calculates the GPS information extracted by the GPS receiver 11a and executes the operation execution unit 1.
3 based on the information indicating the relative amount of change in the moving direction of the vehicle detected by the gyro sensor 11b and the information indicating the current speed of the vehicle detected by the vehicle speed pulse 11c. , Calculates the relative position change of the own vehicle and outputs it to the calculation execution unit 13.

The map information reading unit 12 is a DVD (Digi
It is configured to be able to read various information such as a map information file and a road information file recorded on a large-capacity recording medium such as a tal versatile disc). For example, in the map information file, map data used for navigation display, roads, facilities, etc. are recorded, and in the road information file, road attributes (road name, one-way road, etc.), road connections, etc. Etc. data is recorded. The facility information recorded in the map information file includes information such as the name of each facility, genre (eg, convenience store, restaurant, gas station, etc.), absolute position, and the like.

The operation executing unit 13 is a built-in memory (not shown).
Various system programs stored in are read and executed to centrally control each unit of the navigation device 100.
In addition, various application programs for navigation stored in the memory are read out and various processing such as current position detection processing and facility search processing (see flowcharts shown in FIGS. 2 and 4) described later are executed, and the processing result is displayed. Output to the display 20.

A removable recording medium (CD (Compact Disc)) on which the above-mentioned various system programs, various application programs, and various data are recorded in advance.
Or a DVD) can be reproduced. In this case, the calculation executing unit 13 reads out and executes the various programs recorded in the recording medium.

Based on the current position data of the vehicle input from the automatic position detection unit 11, the calculation execution unit 13 reads map data indicating a certain range of area including the current position from the map information reading unit 12. Output to the display screen of the display 20.

In parallel with the map display process, the calculation executing section 13 determines, based on the absolute and relative position data of the vehicle input from the automatic position detecting section 11, for each constant traveling distance or The position (estimated position) on the two-dimensional coordinates is sequentially calculated for each constant traveling time and collated with the map data, and then the estimated position is corrected and displayed for the road on the map displayed on the display 20.

The operation executing section 13 is, as will be described later in detail,
Based on the entered keyword (genre), list the facilities around the vehicle position (for example, within a radius of 5 km, but it is not limited to this and can be set arbitrarily), and specify the listed facilities by the user Sorting processing for sorting and displaying according to the sorted sorting criteria (refer to the flowchart shown in FIG. 2), and narrowing down processing for narrowing down and displaying the listed facilities according to the narrowing down criteria designated by the user (following chart shown in FIG. 4). See).

That is, in the above sort processing, the operation executing unit 13 lists the facilities around the vehicle position (within a radius of 5 km) based on the input keyword (genre), and then, for all the listed facilities. The angle difference (absolute value) between the direction (eg, advancing direction, left direction, etc.) as the sorting criterion specified by the user and the direction of each facility is calculated, and the list is listed in the ascending order of the calculated angle difference. Sort facility information.

In the narrowing-down process, the calculation executing unit 13 lists the facilities around the vehicle position (within a radius of 5 km) based on the input keyword (genre), and then for all the listed facilities. By calculating the angle difference (absolute value) between the direction (eg, advancing direction, left direction, etc.) as the narrowing-down criterion specified by the user and the direction of each facility, this calculated angle difference is within a predetermined range (ie, Is a range in which they substantially coincide with each other, and may be, for example, 5 degrees, but is not limited to this and can be arbitrarily set).

The remote control light receiving unit 14 receives various instruction signals carried by infrared rays or the like from the remote controller 30 having keys for inputting various instructions, and outputs the received various instruction signals to the operation executing unit 13. .

The display 20 is provided with a display device (not shown) such as a color liquid crystal display, and the processing results (FIGS. 3, 5, and 6) of the sorting process and the narrowing down process.
Display various information such as (see) is displayed.

That is, as described above, the operation execution unit 1
3 realizes the functions of the search unit, the angle difference calculation unit, the ordering unit, the facility extraction unit, and the display control unit.

Next, the operation of the navigation device 100 to which the present invention is applied will be described with reference to FIGS. The programs that implement the functions described in the flowcharts of FIGS. 2 and 4 are stored in a built-in memory (not shown) of the operation executing unit 13 in the form of a readable program code. , The operation according to this program code is sequentially executed. In addition, a program / externally supplied from a CD / DVD control unit (not shown)
It is also possible to execute an operation specific to the navigation device 100 using the data.

First, the calculation execution unit 13 lists the facilities 21a to 21h around the current vehicle position (within a radius of 5 km) based on the inputted keyword "convenience store" and displays them on the display 20 (Fig. Display screen 20a) shown in FIG.

Next, the sorting process for the facility information 21a to 21h listed on the display screen 20a will be described. When the direction data indicating the traveling direction is input as the sorting reference by the remote controller 30 (step S1)
0), the calculation execution unit 13 calculates the angle difference between the direction of each facility with respect to the current vehicle position and the input traveling direction for all the listed facility information 21a to 21h (step). S11).

Next, the calculation executing section 13 sorts the facility information 21a to 21h in the ascending order of the calculated angle difference,
This sort result is displayed as a list on the display 20 (see FIG. 3).
The display screen 20b) is displayed (step S12).

Next, the process of narrowing down the facility information 21a to 21h displayed in a list on the display screen 20a will be described. When the direction data indicating the right direction designated by the user as the narrowing-down criterion is input by the remote controller 30 (step S20), the calculation execution unit 13 sets the current facility information 21a to 21h for all the listed facility information 21a to 21h. An angle difference between the direction of each facility with respect to the own vehicle position and the input right direction is calculated (step S21).

Next, the calculation executing unit 13 narrows down the facilities whose calculated angle difference is within 5 degrees, and displays the narrowed-down result on the display 20 as a list (display screen 20c shown in FIG. 5) (step S22).

As another example of the narrowing-down criterion, the narrowing-down result displayed in the list on the display 20 when the data indicating the traveling direction is input as the narrowing-down criterion is shown in the display screen 20d of FIG.

As described above, the navigation device 100 to which the present invention is applied lists the facilities around the own vehicle position based on the input keyword (genre), and the user is requested to list all the listed facilities. After calculating the angle difference (absolute value) between the direction specified by (for example, traveling direction, left direction, etc.) and the direction of each facility, it is sorted and displayed in ascending order of the calculated angle difference (display screen). 20b), the facilities in a range where the calculated angle difference can be considered to be substantially the same in both directions are narrowed down and displayed (display screens 20c and 20d).

Therefore, it is possible to easily understand what kind of facility is present in the designated direction without increasing the calculation amount, and therefore the desired facility can be obtained by proceeding in the designated direction without using the map information. Can be easily reached,
The convenience can be improved.

The description in this embodiment shows an example of the navigation device according to the present invention.
It is not limited to this. The detailed configuration and detailed operation of the navigation device 100 according to the present embodiment can be appropriately changed without departing from the spirit of the present invention.

For example, in the narrowing-down processing in the present embodiment, after listing the facilities around the vehicle position based on the input keyword, the narrowing-down criterion designated by the user is set for all the listed facilities. The angle difference (absolute value) between the direction of each of the facilities and the direction of each facility was calculated, and only the facilities having the calculated angle difference within the predetermined range (threshold value) were listed, but the calculation is not limited to this. It is also possible to list only the preset number of facilities in the ascending order of the angle difference.

In this case, even if there is no facility within the above-mentioned predetermined range, if the number of facilities is set in advance as long as it is close to the direction of the above-mentioned narrowing-down standard, the peripheral area in the designated direction will be surely listed. Even the facility located in the area can be recognized, and the navigation device 100 is more convenient to use.
Becomes

[0041]

According to the present invention, it is possible to realize a navigation device capable of easily grasping what kind of facility exists in a designated direction without omission.

[Brief description of drawings]

FIG. 1 is a block diagram showing an internal configuration of a navigation device 100 to which the present invention is applied.

FIG. 2 is a flowchart illustrating a sorting process by the navigation device 100 to which the present invention is applied.

FIG. 3 is a display example of processing results by the sort processing shown in the flowchart of FIG.

FIG. 4 is a flowchart illustrating a narrowing-down process by the navigation device 100 to which the present invention is applied.

5 is a display example of processing results by the narrowing-down processing shown in the flowchart of FIG.

6 is a display example of a processing result by the narrowing-down processing shown in the flowchart of FIG.

FIG. 7 is a display example of a processing result of sort processing in a conventional navigation device.

FIG. 8 is a display example of a processing result of sort processing in a conventional navigation device.

FIG. 9 is a flowchart illustrating a sorting process performed by a conventional navigation device.

[Explanation of symbols]

100 navigation device 10 body 11 Automatic position detector 11a GPS receiver 11b Gyro sensor 11c Vehicle speed pulse 12 Map information reading section 13 Operation execution unit 14 Remote control receiver 15 GPS antenna 20 display 30 remote control

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2C032 HB02 HB06 HB08 HB22 HC08                       HD03 HD04                 2F029 AA02 AB01 AB07 AC02 AC04                       AC13 AC14                 5H180 AA01 BB13 FF04 FF05 FF22                       FF27 FF32

Claims (6)

[Claims] 1. A navigation device for constantly detecting a current position of a vehicle and searching for a recommended route to a desired facility, wherein a facility located within a predetermined area including the current position of the vehicle is designated in advance. A facility search means for searching based on a condition; an angle difference calculation means for calculating an angle difference between a direction from the current position of the vehicle toward the facility searched by the facility search means and a predetermined direction; Ordering means for ordering the facility information searched by the facility searching means based on the angle difference calculated by the angle difference calculating means, and facility information searched by the facility searching means based on the ordering by the ordering means A navigation device comprising: a display control unit that displays the. 2. A navigation device which constantly detects the current position of the own vehicle and searches for a recommended route to a target facility, wherein a facility located within a predetermined area including the current position of the own vehicle is designated in advance. A facility search means for searching based on a condition; an angle difference calculation means for calculating an angle difference between a direction from the current position of the vehicle toward the facility searched by the facility search means and a predetermined direction; Only the facilities extracted by the facility extraction unit and the facility extraction unit that extracts only the facilities whose angle difference calculated by the angle difference calculation unit does not exceed a predetermined threshold value are displayed. And a display control means for controlling the navigation device. 3. The facility extracting means extracts a predetermined number of facilities from the facilities searched by the facility searching means in order from the facility having the smallest angle difference calculated by the angle difference calculating means. The navigation device according to claim 2, characterized in that: 4. A function of constantly detecting the current position of the own vehicle and searching for a recommended route to a target facility, and a facility located within a predetermined area including the current position of the own vehicle are designated in advance in a computer. A function to search based on the conditions searched, and a direction from the current position of the vehicle to the searched facility,
A function of calculating an angle difference from a direction designated in advance, a function of ordering the searched facility information based on the calculated angle difference, and a function of performing the searched facility information based on the ordering. A function to display and a program to realize. 5. A function for constantly detecting the current position of the own vehicle and searching for a recommended route to a target facility and a facility located within a predetermined area including the current position of the own vehicle are designated in advance in the computer. A function to search based on the conditions searched, and a direction from the current position of the vehicle to the searched facility,
A function of calculating an angle difference from a direction designated in advance, a function of extracting only facilities in which the calculated angle difference does not exceed a predetermined threshold from the searched facilities, and only the extracted facility A function to display and a program to realize. 6. The computer according to claim 5, further comprising a function of extracting a predetermined number of facilities from the retrieved facilities in order from the facility having the smallest calculated angle difference. program.