JPH11257989A - Navigation device with touch switch and medium recording program - Google Patents

Abstract

(57) [Problem] To improve operability of a touch switch in a navigation device. An arithmetic unit displays a search route on a display unit together with map data and a current position. When traffic congestion or the like occurs during traveling on the route, the user inputs a request for a detour route from the input unit 20. When the user operates the touch switch after requesting the detour route, the calculation unit 22 calculates the distance between the touch position and a point on the nearest route.
If the distance is greater than or equal to a predetermined value, the map is scrolled around the touch position, and if the vicinity of the route is touched, it is further determined whether or not the touch position is at the edge of the screen.
In the case of the end of the screen, the map is scrolled in the forward direction of the route, and in the case of not the end of the screen, the detour route is calculated with the nearest point as the tip position of the detour section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device with a touch switch and a medium on which a program is recorded, and more particularly to a navigation device that realizes a plurality of functions by a touch switch.

[0002]

2. Description of the Related Art Conventionally, there is known a navigation system for displaying a current position of a vehicle together with map data on a screen, searching for a route to a destination and displaying the route on the screen, and guiding the vehicle.

For example, Japanese Patent Application Laid-Open No. 8-136277 discloses that a route to a destination is searched for and presented to a user, and when a user encounters traffic congestion while traveling along this route, the user presses a detour key. A technique is described in which, when operated, a detour route from a current position to a link near a destination is calculated and displayed on a screen. In addition, as a setting method of the avoidance section, a method of inputting distance data from the current position, a method of inputting an intersection name at an end point of the section to be avoided, a method of inputting an intersection at an end point of the section to be avoided with a cursor on the map screen. A method for inputting information and the like are disclosed.

[0004]

As a method of setting an avoidance section, that is, a detour section, there is a method of inputting data with a touch switch in addition to the method described above, which is more convenient than operating a cursor or a key. It is conceivable that the touch switch is usually provided with a plurality of functions such as map scrolling in addition to various inputs. Specifically, a search route is displayed, and when traffic congestion or an accident occurs while traveling along this route and a need for a detour occurs, the user shifts to a detour setting mode and sets a detour section. In this case, the end point of the detour section is specified by the touch switch. In addition, the user may want to scroll the screen because the end point of the detour section is not displayed on the screen.

When the screen scroll is to be performed by the touch switch, the operation of the touch switch for inputting the end point of the detour section and the operation of the touch switch for scrolling the screen are not clearly distinguished. Therefore, the user cannot grasp the operation realized by the touch switch operation performed by the user, and as a result, the operability of the navigation system is reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the related art, and has as its object that when a plurality of functions are realized by a touch switch, a user can clearly use each of the functions, and operability is improved. Another object of the present invention is to provide a navigation device excellent in the above and a medium recording a program for realizing the same.

[0007]

According to a first aspect of the present invention, there is provided a navigation system for displaying map data or searching for a route based on data input from a touch switch, and displaying the result on a screen. In the apparatus, discriminating means for discriminating a map scroll function and a point input function by the touch switch according to a distance between a screen position input from the touch switch and a screen position on the map data closest to the screen position. It is characterized by having.

According to a second aspect of the present invention, there is provided a navigation device for displaying map data or searching for a route based on data input from a touch switch and displaying the results on a screen. A touch switch type route selecting means to be selected and a control means for scrolling a map along the search route according to a contact mode at the time of selecting the search route are provided.

According to a third aspect of the present invention, there is provided a medium recording a navigation program for displaying map data and searching for a route based on data input from a touch switch,
The program causes a computer to input data from the touch switch, calculate a distance between a screen position input from the touch switch and a screen position on the map data closest to the screen position, and According to the present invention, the map scroll function and the point input function are distinguished from each other.

According to a fourth aspect of the present invention, there is provided a medium recording a navigation program for performing map data display and route search based on data input from a touch switch,
The program causes a computer to display a search path on a screen, input selection data of the search path from the touch switch, determine a contact mode at the time of the input, and perform the search according to the contact mode. It is characterized in that map scrolling along a route is executed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings, particularly in a case where a user wants a detour.

FIG. 1 is a block diagram showing the configuration of this embodiment.

The GPS receiver 10 receives radio waves from a plurality of GPS satellites, detects the position of the vehicle, and outputs the detected position. G
The position detection by the PS receiver 10 is an absolute position detection.

The azimuth sensor 12 and the distance sensor 14 detect and output the azimuth and the distance of the vehicle, respectively. The vehicle can also be detected by the azimuth and the distance, which is a relative position detection indicating a displacement from a certain reference position. By using both the relative position detection and the absolute position detection by GPS, the vehicle position can be detected with high accuracy.

The vehicle position identification unit 16 is a GPS receiver 1
Based on the output from 0 and the outputs of the direction sensor 12 and the distance sensor 14, the position of the own vehicle is specified and output to the navigation calculation unit 22.

The map information storage unit 18 stores display map data and route calculation map data necessary for the navigation function, and is composed of a CD-ROM, a DVD-ROM, or the like. The map data is appropriately read in response to a request from the arithmetic unit 22 and supplied to the arithmetic unit 22.

The input unit 20 is used by the user to input various data and requests to the navigation system, and in this embodiment, is constituted by a touch switch. By operating the touch switch (specifically, touching a predetermined position on the screen), the user can request a bypass route, set a bypass section, and scroll the map. The input unit 20 is actually configured integrally with a display unit 26 described later.

The calculation unit 22 is a part for executing a navigation function, and includes a route calculation unit 22a and a route guidance control unit 22.
b. The route calculation unit 22a searches for a route to a destination specified by the user and supplies the route to the route guidance control unit 22b and the route storage unit 24. Note that the route calculation is specifically performed by using a known search method such as the Dijkstra method using the route calculation map data stored in the map information storage unit 18. The route calculation map data is composed of nodes and links, and travel time and the like are added as costs to each link. The route calculation unit 22a searches for a route that can be reached from the current location to the destination at the lowest cost. On the other hand, the route guidance control unit 22b displays the search route supplied from the route calculation unit 22a on the display unit 26, compares the current position with the search route, and guides the vehicle along the search route at an intersection or the like. For this purpose, audio data is output to the speaker 28. The calculation unit 22 can be configured by a microcomputer.

The display unit 26 displays the detected current position and the map data, and also displays the search route as described above and provides it to the user. The display unit 26 can be specifically configured by a CRT or a liquid crystal panel, and also serves as a touch switch as described above.

In such a configuration, the search route is displayed on the display unit 26, and when traffic congestion or construction occurs during traveling along the route, if the user wants the detour route, the input unit 20 Enter a detour request from. The calculation unit 22 that has received the detour request displays a message prompting the user to set a detour section on the display unit 26, and waits for a detour section setting from the user.

FIG. 2 schematically shows a display example of the display unit 26 when a detour route request is input. FIG. 2 (A)
Is a display example when the vehicle is traveling along the route obtained by the search, in which the searched route 100 and the current position 200 are displayed so as to be superimposed on the map data. Further, at the bottom of the screen, touch switches of “Details”, “Detour”, “All Routes”, “Registration”, and “Wide Area” are displayed.
If the traffic cannot be run smoothly due to traffic congestion or construction on the searched route, the user operates (contacts) the “detour” touch switch at the bottom of the screen to input a detour request to the arithmetic unit 22. When re-searching the entire route, the “all route” touch switch may be operated, and when a desired point is registered, the “point registration” touch switch may be operated.

FIG. 2B shows an example in which the calculation unit 22 that has received the detour request displays the information on the display unit 26. The lower part of the screen displays "How far should you detour? Touch the tip of the detour." A message is displayed to prompt the user to input the tip position of the detour section. In response to this message, the user touches the leading end position of the detour section (end point of the detour section) and inputs the position.

Here, when inputting the detour section, depending on the screen, the tip position of the detour section may not be displayed, or even if it is displayed, it may be desired to scroll the screen so as to be more easily recognized. . In such a case, it is preferable for the user to be able to scroll the screen by touching the screen, but the touch for setting the detour section and the touch for scrolling the screen are not clearly distinguished. In spite of the fact that the user wants to scroll the screen, the point may be input as the tip position of the detour section, or conversely, the screen may be scrolled even though the user touches the tip position of the detour section. There is.

Therefore, the calculation unit 22 of the present embodiment discriminates the function of setting the detour section and the function of scrolling the map in accordance with the operation mode of the touch switch by the user, that is, the contact mode, for user convenience.

FIG. 3 shows a flow chart of the discrimination process executed by the arithmetic unit 22 after the user requests the detour route. First, when the user touches the screen on which the search route is displayed, the calculation unit 22 inputs the coordinates (x, y) on the screen touched by the user (S101).
The coordinates are, for example, x-coordinate in the horizontal direction of the screen and y-coordinate in the vertical direction.
The coordinates and the upper left of the screen can be determined as the origin. This coordinate position is defined as T.

Next, the screen coordinates (x, x) of the point on the route of the map data closest to the coordinate position T touched by the user.
y) is calculated (S102). The point on the route of the map data closest to the coordinate position T is determined by, for example, setting a concentric circle centering on the coordinate position T while sequentially increasing its radius, and extracting the point on the route that first exists in the concentric circle. can do. This screen coordinate position is defined as K.

After calculating the screen coordinates T and K, the calculation unit 2
2 calculates the linear distance d between T and K (S103). The linear distance d can be calculated from the sum of squares of the difference between the two coordinates.

After calculating the linear distance d, the distance d is compared with a predetermined value (for example, 5 mm) (S104). Then, when the linear distance d is equal to or more than the predetermined value (N in S104)
In O), it is determined that the user has touched the screen irrespective of the route, and it is determined that the user has requested a map scroll instead of setting the detour section, and the touch position T is set to the center of the screen. (S105).
Note that scrolling the map around the touch position is referred to as one-touch scroll for convenience.

On the other hand, if the linear distance d is smaller than the predetermined distance (YES in S104), it can be determined that the user has touched in relation to the route, so that the arithmetic unit 22 further requests the user. Is determined. That is,
Touch position T is a predetermined distance (for example, 6 mm) from the edge of the screen
It is determined whether or not the route is within the predetermined distance (S106). If the distance is within the predetermined distance, it is determined that the user has requested the map scrolling along the route instead of setting the detour section, and the route is maintained for the time during which the screen touch is held. (S107). If it is determined in S106 that the touch position T is at a predetermined distance from the edge of the screen, the user determines that the detour section has been set by this touch operation, and the point T is displayed on the map database (DB). The link cost on the route connecting the coordinates of the current position and the coordinates of the current position on the map database is multiplied by a predetermined value (for example, five times), and the route is recalculated (S108). The reason that the link cost is multiplied by a predetermined value is to relatively increase the cost of this link so as not to be selected when searching for a route by the Dijkstra method or the like. As a result, a detour route can be searched. . When the detour route is obtained, the calculated new route is displayed on the display unit 26 (S109).

In calculating the detour route, the detour route can be calculated by deleting the link from the route calculation data instead of increasing the link cost of the designated section.

As described above, in the present embodiment, (1) when the distance between the touch position and the position on the route of the map data is greater than or equal to a predetermined value, it is determined that the user has performed the operation regardless of the route. Executing the map scrolling function centering on the touch position (2) If the user is near the route and touches the edge of the screen, the user determines that the user wants scrolling along the route and determines (3) When the user touches the vicinity of the route and other than the end of the screen, it is determined that the user has input the leading end position (end point) of the detour section on the route. Then, it is possible to discriminate between the three types of functions of executing the calculation of the detour route based on the input position, and to accurately determine the intention of the user and to surely execute the function desired by the user.

In the present embodiment, the distance between the touch position and a point on the route and the distance from the edge of the screen to the touch position are used as the contact modes for discriminating the functions. It is also possible to discriminate using.
For example, even if the touch position is at the edge of the screen, if the contact time is equal to or less than the predetermined time, the user determines that the edge has been input as the tip position of the detour section and performs the detour calculation instead of scrolling. It is also possible to execute, and it is also possible to scroll the map only when the end of the screen is touched for more than a predetermined time.

Further, it is possible to scroll the map only when the user continuously touches the edge of the screen toward the outside of the screen.

Further, in this embodiment, the case where the user makes a detour route request has been described. However, the present invention is not limited to this, and is applicable to any case such as inputting a destination or a waypoint. It is possible to

The processing shown in FIG. 3 can be realized by the arithmetic unit 22 sequentially executing programs having the above-mentioned algorithms (1) to (3). , CD-RO
The data can be supplied to the arithmetic unit 22 from any recording medium capable of magnetically, electrically, optically, or chemically retaining data, such as M, DVD-ROM, DVD-RAM, and the like.

[0036]

As described above, according to the present invention,
When a plurality of functions are realized by the touch switch, each function is clearly distinguished, so that operability is excellent and smooth navigation can be performed.

[Brief description of the drawings]

FIG. 1 is a configuration block diagram of an embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating an example of a screen display when a detour route is requested according to the embodiment.

FIG. 3 is a processing flowchart of the embodiment.

[Explanation of symbols]

10 GPS receiver, 12 direction sensor, 14 distance sensor, 16 own vehicle position specifying unit, 18 map information storage unit, 20 input unit, 22 arithmetic unit, 24 route storage unit,
26 display unit, 28 speakers.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI G09B 29/10 G09B 29/10 A

Claims (4)

[Claims] 1. A navigation device for displaying map data or searching for a route based on data input from a touch switch and displaying the results on a screen, comprising: a screen position input from the touch switch; A navigation device with a touch switch, comprising a discriminating means for discriminating between a map scroll function and a point input function by the touch switch according to a distance from a screen position on the nearest map data. 2. A navigation device for displaying map data or searching for a route based on data input from a touch switch and displaying the result on a screen, wherein a touch switch type route for selecting a search route displayed on the screen. A navigation device with a touch switch, comprising: selecting means; and control means for performing map scrolling along the search route in accordance with a contact mode when the search route is selected. 3. A medium recording a navigation program for performing map data display and route search based on data input from a touch switch, the program causing a computer to input data from the touch switch, A distance between a screen position input from the touch switch and a screen position on the map data closest to the screen position is calculated, and a map scroll function and a point input function are distinguished according to the distance. Medium on which program is recorded. 4. A medium recording a navigation program for performing map data display and route search based on data input from a touch switch, the program causing a computer to display a search route on a screen, A program for inputting selection data of the search route from a touch switch, determining a contact mode at the time of the input, and executing a map scroll along the search route in accordance with the contact mode. Medium.