JP5003615B2 - Navigation device and image display program - Google Patents

Description

  The present invention relates to a navigation device having a function of displaying a guide route to a destination together with a map image on a display unit, and an image display program.

2. Description of the Related Art Conventionally, a car navigation apparatus having a function of scrolling a map image according to a position touched by a user on a screen is widely known. In such a navigation device, the vehicle mark is located when the vehicle image indicating the position of the vehicle is not included in the display image (hereinafter referred to as “outside display image”) by scrolling. Some display the direction (see, for example, Patent Document 1).
JP 2007-064844 A

  In the above navigation device, when the position of the own vehicle or the guidance route (hereinafter referred to as “guidance route”) is outside the display image, guidance is provided when the user himself / herself searches for a facility close to the guidance route on the map image. The positional relationship between the route and the facility (distance and route to the facility) becomes difficult to understand. At this time, in order for the user to easily grasp the positional relationship between the guide route or the like and the facility, it is necessary to scroll the map so that the guide route or the like is within the display area.

  The operation at this time is generally performed by the user touching the screen while looking at the display image. However, since the user needs to watch the display image, the user is driving the vehicle. Needs to stop the vehicle once. For this reason, there has been a problem that it takes time to perform an operation to stop the vehicle when searching for a facility close to the guide route or the like.

  Therefore, in view of such problems, in a navigation device having a function of displaying a guide route to the destination together with a map image on the display unit, it is possible to prevent troublesome work when searching for facilities close to the guide route, etc. It is an object of the present invention to make it possible to easily find a facility close to a guide route or the like even while traveling.

  The navigation device according to claim 1, wherein the guidance route determination means includes a guidance route in a display image after scrolling by the scroll means during operation of the function of displaying the guidance route. It is determined whether or not. Then, when the guide route determining means determines that the display image does not include the guide route, the display control unit displays the display image so that the display image includes the guide route.

According to such a navigation device, the display image can be displayed so that the display image includes the guidance route, so that it is possible to prevent troubles when searching for a facility near the guidance route in the display image after scrolling. can do. Therefore, the user of the device can search for a facility near the guidance route with a simple operation even when the vehicle is traveling.
Furthermore, the navigation device of the present invention includes a travel acquisition unit that is mounted on the vehicle and acquires a detection result by the travel detection unit that detects whether or not the vehicle is traveling, and the display control unit includes the travel acquisition unit. Only when the detection result indicating that the vehicle is traveling is acquired, the display image is displayed so that the guide route is included in the display image.
According to such a navigation device, the user can always include the guide route in the display image only when traveling, and the display image may not include the guide route except during travel. Can switch the display mode (the mode for determining whether or not the guide route is always included in the display image) without changing the setting. Moreover, in the structure of this invention, when safe operation other than the time of driving | running | working can be implemented, since the display of the area | region which does not include a guidance route can be permitted, the freedom degree of a display mode can be improved.

Incidentally, the display control unit keep navigation device according to claim 1, so that the guide route by scrolling the Viewing image is displayed on the display image. In addition to scrolling the display image, the guide route may be displayed on the display image by changing the scale of the map image included in the display image .

According to such navigation devices, it is possible to specifically realize a configuration for displaying a display image so that the guide route is included in the display image .

Next, as a configuration for achieving the above object, as described in claim 3 , there is an image display program for executing the functions as the respective means described in claim 1 or claim 2 on a computer. May be.

According to such an image display program, since the function as each means according to claim 1 or 2 is provided as a function of the program, at least the same effect as the navigation device of claim 1 can be enjoyed. Can do.

Embodiments according to the present invention will be described below with reference to the drawings.
[Configuration of this embodiment]
FIG. 1 is a block diagram showing a schematic configuration of a navigation apparatus 1 to which the present invention is applied. The navigation device 1 is a device mounted on a vehicle such as a passenger car, for example, and is configured around a navigation ECU (ECU is an electronic control device) 10. In the following description, a vehicle equipped with the navigation device 1 of the present invention is referred to as a host vehicle.

  In addition to the navigation ECU 10, the navigation device 1 includes a GPS receiver 21, a gyroscope (gyro) 23, an acceleration sensor (G sensor) 24, a vehicle speed sensor 25 (running detection means), an ACC switch 26, An operation unit 27, a map database (DB) 28, and a display unit 29 are provided.

  The GPS receiver 21 receives signals from a plurality of GPS satellites and sends them to the navigation ECU 10. The gyro 23 is a known gyroscope, and detects an angular velocity or the like in the host vehicle.

  The G sensor 24 is configured as a well-known three-dimensional acceleration sensor, and detects the acceleration applied to the host vehicle by decomposing the acceleration into components in three axial directions. The vehicle speed sensor 25 is a known vehicle speed sensor and detects the traveling speed of the host vehicle.

  Various detection results obtained by the GPS receiver 21, the gyro 23, the G sensor 24, and the vehicle speed sensor 25 (hereinafter collectively referred to as “various sensors”) can be acquired by the navigation ECU 10.

  The navigation ECU 10 has a function as a known microcomputer including a CPU, a ROM, a RAM, and the like. The navigation ECU 10 acquires detection results from various sensors, and performs processing (including map scroll processing described later) based on a program (including an image display program) stored in the ROM.

  Specifically, the navigation ECU 10 detects the current position (current location) of the host vehicle based on a signal from the GPS receiver 21. In addition, the navigation ECU 10 repeatedly detects the current position of the host vehicle, thereby detecting the movement vector of the host vehicle (the direction in which the front of the host vehicle is facing: the direction of the host vehicle).

  Further, the navigation ECU 10 also performs dead reckoning processing for detecting the current position and traveling direction of the host vehicle (direction in which the front of the host vehicle is facing) based on the detection results of the gyro 23, the G sensor 24, and the vehicle speed sensor 25. . Then, the navigation ECU 10 reads out map data including the current position of the host vehicle from the map DB 28 in which a digital map associated with latitude and longitude is recorded in advance, and this map data is known together with the current position and traveling direction of the host vehicle. The image is displayed on the display unit 29 configured as a display.

  The navigation ECU 10 has a known function of scrolling the map image in response to an operation on the operation unit 27 (for example, a touch panel type operation unit) for a user to input an operation command. Further, when a destination on the map is set by operating the operation unit 27, the navigation ECU 10 sets a guide route from the current position of the host vehicle to the set destination, and the display unit 29 together with the map image. It also has a function to display on the screen. In the following description, the map image displayed on the display unit 29 is referred to as a “display image”.

[Process of this embodiment]
In the navigation device 1 configured as described above, the map scroll process shown in FIG. 2 is also performed. FIG. 2 is a flowchart showing map scroll processing executed by the navigation ECU 10. The map scroll process is a process that is repeatedly performed at a predetermined cycle when, for example, an ignition switch (not shown) is turned on. It is determined whether or not a scroll command for moving the range is input (S110).

  Note that the scroll command input from itself corresponds to, for example, a command for updating (moving) the display range of the display image in accordance with the movement of the current position of the host vehicle, and from the outside (operation unit 27). The input scroll command corresponds to, for example, a command for moving the display range of the display image in the direction of the position touched from the center of the display image according to the position on the screen touched by the user.

  If no scroll command is input (S110: NO), the map scroll process is terminated. If a scroll command is input (S110: YES), the center of the display image is moved so that the position specified by the scroll command becomes the center of the display image (S120: scroll means).

  Subsequently, it is determined whether or not the host vehicle is traveling (S130: traveling acquisition means). Specifically, it is determined whether or not the host vehicle is traveling based on whether or not the detection results of the gyro 23, the G sensor 24, and the vehicle speed sensor 25 output corresponding to traveling.

  If the host vehicle is traveling (S130: YES), it is determined whether a function for displaying a guidance route (that is, a function for guiding the host vehicle to the destination) is in operation (S140). If the function for displaying the guide route is in operation (S140: YES), it is further determined whether or not the guide route is included in the display image (map image) (S150: guide route determination means).

  If the guide route is not included in the display image (S150: NO), the display mode of the display image is changed so that the guide route is included (S160: display control means). Specifically, the center position of the display image is moved so that the center position of the display image is on the guide route. At this time, for example, as shown in FIG. 3, the display image may be moved in the vertical direction or the horizontal direction on the display unit 29 or may be closest to the center position before the display image is moved. The display image may be moved so that the position becomes the center of the display image.

  When such processing ends, the display image after movement is output to the display unit 29 (S170), and the map scroll processing ends. That is, in this case, the display image generated in S160 is output to the display unit 29.

  On the other hand, when it is determined that the host vehicle is not traveling in the process of S130 (S130: NO), the function for displaying the guide route is not activated in the process of S140 (S140: NO), and the process of S150 If the guide route is included in the display image in the process (S150: YES), the display image after the movement is immediately output to the display unit 29 (S170), and the map scroll process is terminated. In this case, the display image generated by the process of S120 is output to the display unit 29.

[Effect of this embodiment]
In the navigation device 1 described in detail above, the navigation ECU 10 determines whether or not a guidance route is included in the display image after scrolling during the operation of the function of displaying the guidance route in the map scroll process. To do. When it is determined that the guide route is not included in the display image, the display image is displayed so that the guide route is included in the display image. Specifically, the navigation ECU 10 causes the display image to be displayed on the display image by scrolling the display image.

  According to such a navigation device 1, the display image can be displayed so that the guide image is included in the display image. Therefore, it takes time to search for a facility close to the guide route in the display image after scrolling. Can be prevented. Therefore, the user of the navigation device 1 can search for a facility near the guidance route with a simple operation even when the host vehicle is traveling.

  Furthermore, the navigation device 1 is mounted on the host vehicle, and the navigation ECU 10 acquires a detection result from the vehicle speed sensor 25 and displays a display image only when the detection result indicating that the host vehicle is traveling is acquired. The display image is displayed so that the guide route is included in

  According to such a navigation device 1, it is ensured that the display route is always included in the display image only during travel, and the display image does not have to be included in the display image except during travel. It is possible to switch the display mode (a mode for determining whether or not the guide route is always included in the display image) without the user changing the setting. Moreover, in the structure of this invention, when safe operation other than the time of driving | running | working can be implemented, since the display of the area | region which does not include a guidance route can be permitted, the freedom degree of a display mode can be improved.

[Other Embodiments]
Embodiments of the present invention are not limited to the above-described embodiments, and can take various forms as long as they belong to the technical scope of the present invention.

  For example, in the map scroll processing of the above embodiment, whether or not the guide route is included in the display image before the display image is actually scrolled (before the display image after scrolling is displayed on the display unit 29). However, after the display image is scrolled, it may be determined whether or not a guide route is included in the display image.

  In the map scroll processing of the above embodiment, the display image is moved so that the center position of the display image is on the guide route. However, the display image may be moved so that the display image includes the guide route. For example, the mode of movement can be arbitrarily set. Further, whether or not to execute the process of always including the guidance route in the display image (the process of S140 to S160) may be set based on the input from the operation unit 27.

  Further, in the map scroll processing of the above embodiment, the guide route is included in the display image by moving the center position of the display image. For example, the guide route is displayed by changing the scale of the map. May be included. Specifically, in the display image, the scale may be changed stepwise (the scale denominator is increased) until the guidance route is included in the display image. That is, when a plurality of (many) scales for displaying a map image are prepared and the guide route is not included in the display image (S150: NO), the display is reduced by one step from the current scale. It is determined whether or not the guide route is included in the image, and if the guide image is not included in the display image, the scale is further reduced by one step to determine whether or not the guide route is included. Repeat the process.

  Then, the display image is output at a scale including the guidance route. Even if such processing is performed, the same effects as those of the above-described embodiment can be obtained.

1 is a block diagram showing a schematic configuration of a navigation device 1. FIG. It is a flowchart which shows a map scroll process. It is a schematic diagram which shows the example of a map scroll.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Navigation apparatus, 10 ... Navigation ECU, 21 ... GPS receiver, 23 ... Gyro, 24 ... G sensor, 25 ... Vehicle speed sensor, 26 ... ACC switch, 27 ... Operation part, 28 ... Map DB, 29 ... Display part.

Claims (3)

A navigation device having a function of displaying a guide route to a destination together with a map image on a display unit,
The navigation device is mounted on the vehicle,
Travel acquisition means for acquiring a detection result by the travel detection means for detecting whether or not the vehicle is traveling;
Scroll means for scrolling a display image, which is a map image displayed on the display unit, in the designated movement direction when receiving a scroll command designating the movement direction from the outside;
Guidance path determination means for determining whether or not the guidance path is included in a display image after scrolling by the scroll means during operation of the function of displaying the guidance path;
When the guide route determining means determines that the guide image is not included in the display image, the display image is displayed so that the display image includes the guide route by scrolling the display image. Control means;
With
The display control means displays the display image so that the guide route is included in the display image only when a detection result indicating that the vehicle is traveling is acquired by the travel acquisition means.
Navigation device according to claim. The navigation device according to claim 1, wherein
In addition to scrolling the display image , the display control means changes the scale of a map image included in the display image so that the guide route is displayed on the display image. Navigation device. An image display program for executing the function as each means according to claim 1 or 2 in a computer.

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