JP2006030005A - Navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make facility icons not displayed, when a large number of facilities exists on a display screen. <P>SOLUTION: The facility icons are displayed (S110), when the number of the facility icons displayed on the display screen is a specified facility number N or fewer (determined as NO in S108). The facility icons are not displayed (S112), and a statement making it not display the facility icons is displayed on the display screen (S114), when the number of the facility icons displayed on the display screen is more than the specified facility number N (determined as YES in S108). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a navigation device that displays facility icons on a map.

  The navigation device has a function of displaying facilities such as restaurants, convenience stores, and gas stations as facility icons on a map.

  When a large number of facilities are present on the display screen of the navigation device or when the map scale of the display screen of the navigation device is set to be small, a large number of facility icons are displayed on the display screen of the navigation device. .

  In such a case, the facility icon may overlap with a road or a place name on the map. For example, as shown in FIG. 4, a facility icon (indicated by POI in the figure) may overlap with a road name (national road YYY) or facility icons may overlap.

  In such a case, the user cannot visually recognize roads, road names, place names, and the like.

In view of this, there has been proposed a technique in which a plurality of logo marks are aggregated and displayed on a representative logo mark when there are a plurality of facility icons on the display screen (see, for example, Patent Document 1).
JP 2004-69561 A

  However, in such a navigation device, when there are many facility icons on the display screen, the facility icons are not automatically hidden.

  In order to hide the facility icon, the user had to manually hide the facility icon.

  The present invention has been made in view of the above problems, and an object of the present invention is to automatically hide a facility icon when a large number of facilities exist on a display screen.

  To achieve the above object, according to the first aspect of the present invention, there is provided a map data acquiring means for acquiring map data including a road map and a facility icon indicating a facility on the road map, and a map acquired by the map data acquiring means. A navigation device comprising display control means for displaying a road map and a facility icon indicating a facility on the road map on a display screen of the display means using data, wherein the display control means defines the number of facility icons. If the number of facilities is larger than the number of facilities, the facility icon is hidden.

  In this way, the display control means hides the facility icons when the number of facility icons is larger than the prescribed number of facilities, so when there are many facilities on the display screen, the facility icons are automatically hidden. It can be.

  Further, as in the invention described in claim 2, the display control means specifies the number of facility icons to be displayed on the display screen of the display means, and the number of facility icons to be displayed on the display screen of the specified display means is defined. If the number of facilities is larger than the number of facilities, the facility icon can be hidden.

  According to a third aspect of the present invention, in the first aspect of the invention, the vehicle has a vehicle position acquisition unit that acquires position information of the vehicle, and the display control unit is acquired by the vehicle position acquisition unit. Based on the location information of the vehicle, the number of facility icons of the facility existing within the predetermined range of the current location of the vehicle is specified, and the number of facility icons of the facility existing within the predetermined range of the identified current location of the own vehicle is specified. If the number of facilities is larger than the number of facilities, the facility icon is hidden.

  In this way, the display control means can hide the facility icon when the number of facility icons of the facility existing within a predetermined range of the current location of the host vehicle is larger than the prescribed number of facilities.

  According to a fourth aspect of the present invention, in the first aspect of the invention, the vehicle has a vehicle position acquisition unit that acquires position information of the vehicle, and the display control unit is acquired by the vehicle position acquisition unit. Based on the location information of the host vehicle, the number of facility icons of the facility existing within the predetermined range of the traveling direction of the host vehicle is specified, and the number of facility icons of the facility existing within the predetermined range of the identified traveling direction of the host vehicle When the number of facilities is larger than the prescribed number of facilities, the facility icon is hidden.

  In this way, the display control means can hide the facility icon when the number of facility icons of the facility existing within a predetermined range in the traveling direction of the host vehicle is larger than the prescribed number of facilities.

  Further, the invention according to claim 5 is provided with route setting means for setting a guide route to the destination in the invention according to claim 1, and the display control means is for the guide route set by the route setting means. Specify the number of facility icons for facilities that exist within the specified range, and hide the facility icons when the number of facility icons for facilities that exist within the specified range of the specified guide route is greater than the specified number of facilities. It is a feature.

  Thus, the display control means can hide the facility icon when the number of facility icons of the facility existing within the predetermined range of the guide route is larger than the prescribed number of facilities.

  Moreover, since the display control means displays on the display screen that the facility icon is not displayed when the plurality of facility icons are not displayed as in the invention described in claim 6, the user can It can be determined whether it does not exist or only the facility icon is hidden.

(First embodiment)
FIG. 1 shows a block configuration of a navigation device according to an embodiment of the present invention. The navigation device 1 includes a GPS receiver 11, a gyroscope 12, a DVD deck 13, an LCD display device 14, a memory 15, and a CPU 16 connected to these via an internal bus (not shown).

  The GPS receiver 11 acquires position information of the own vehicle based on a signal for specifying the position of the own vehicle that is input from the GPS antenna 11a that receives radio waves from the satellite.

  The gyroscope 12 detects a yaw rate (yaw angular velocity) of the own vehicle, and is generally provided in a navigation device.

  The DVD deck 13 is configured by a device that reads data stored in a storage medium such as a DVD-ROM, and reads out map data, map matching data, facility information, and the like stored in the storage medium from the CPU 16. Based on the request, it is output to the CPU 16. The facility information includes information such as a facility icon and a location point for a specific restaurant, convenience store, gas station, or other facility at a point in the map.

  The LCD display device 14 includes a display screen using a liquid crystal (LCD) display and a speaker (both not shown), and displays the video on the display screen in response to an input of a video signal from the CPU 16. In response to the audio signal from the CPU 16, the speaker outputs the audio.

  The LCD display device 14 is provided with a plurality of mechanical switches provided around the display screen and a touch panel (none of which is shown) provided on the display screen. These mechanical switches and touch panels output signals based on user operations to the CPU 16.

  The memory 15 includes a storage medium such as a ROM, a RAM, and an EEPROM, and a program for operating the CPU 16 is stored in the ROM.

  The CPU 16 executes a program for the operation of the navigation device 1 stored in the storage medium of the memory 15 and the DVD deck 13, and in executing the program, the GPS receiver 11, the gyroscope 12, the DVD deck 13, and the LCD display Various signals are exchanged with the device 14 and the memory 15.

  As specific processing performed by the CPU 16 executing the program, based on signals from the GPS receiver 11 and the gyroscope 12, the current location and the traveling direction of the vehicle are specified using a known technique such as map matching. At the same time, based on the map data acquired from the storage medium of the DVD deck 13, the current position display process for displaying the vehicle position mark on the map, and the input of the destination by the user from the mechanical switch or touch panel provided in the LCD display device 14 Acceptance, guide route search processing for calculating an optimum guide route from the current location to the destination, reading out map data stored in the storage medium of the DVD deck 13, and displaying the guide route calculated by the guide route search processing on the LCD display device It is displayed on the map of 14 display screens, and the intersection Instructions definitive bending direction that is the audio output from the speaker, there is a route guidance processing for guiding the user to the guidance route.

  For the map display by the current location display process or the route guidance process described above, the user sets the map display screen in advance according to the menu displayed on the display screen of the LCD display device 14.

  The map display screen settings include a map orientation setting for switching the orientation of the map to be displayed, a two-screen display setting for splitting the display screen into left and right displays, a 3D display setting for displaying the map in three dimensions, There are facilities display settings.

  The facility display is set as follows.

  When the CPU 16 displays a menu for selecting the display or non-display of the facility icon on the display screen of the LCD display device 14 and a signal indicating the display of the facility icon is input from the mechanical switch or the touch panel according to the user's operation The display setting of the facility icon is displayed, and when the signal indicating the non-display of the facility icon is input, the display setting of the facility icon is not displayed.

  In addition, when a signal indicating the display of a facility icon is input from a mechanical switch or a touch panel, a facility to be displayed from a plurality of types of facility icons prepared in advance (for example, a restaurant, a convenience store, a gas station, etc.) A menu that prompts the user to select an icon is displayed, and the facility icon selected by the user is displayed. A plurality of facility icons can be selected by the user.

  The CPU 16 stores the setting information of the facility display set in this way in the EEPROM of the memory 15 and performs map display based on the setting information of the facility display stored in the EEPROM.

  Next, the facility icon display process of the CPU 16 will be described. The CPU 16 starts the facility icon display processing shown in FIG. 2 in parallel with the processing as the navigation device such as the current location display processing and the route guidance processing described above.

  First, the facility display setting is confirmed (S100). Specifically, each setting information of the facility display stored in the EEPROM is read out.

  Next, it is determined whether the display setting of the facility icon is displayed or not displayed based on the facility display setting information read from the EEPROM (S102).

  Here, when the display setting of the facility icon is not displayed (determined as NO in S102), only the map is displayed without displaying the facility icon (S104), and this process is terminated.

  If the facility icon display setting is displayed in S102 (YES in S102), the current location is confirmed (S106). Specifically, the current location of the own vehicle is confirmed based on the current location of the own vehicle specified by the current location display processing performed in parallel with this processing (S106).

  Next, it is determined whether or not the number of facilities around the current location is greater than a predetermined number of facilities. Specifically, the number of facility icons to be displayed on the display screen is specified based on the setting of the map scale, the current location of the vehicle, and the facility information included in the map data, and the number of facility icons to be displayed on the specified display screen It is determined whether or not the number of facilities around the current location is larger than the predetermined number of facilities by determining whether or not is larger than the predetermined number of facilities N (S108).

  Since the display range of the display screen changes depending on the setting of the map scale, the prescribed number of facilities N is determined for each map scale. When the map scale is small, the prescribed number of facilities N is small, and when the map scale is large, the prescribed number of facilities N is large.

  The prescribed facility number N can be set for each type of facility from the above-described facility display setting menu by a user's operation of a mechanical switch or a touch panel.

  If it is determined in S108 that the number of facility icons to be displayed on the display screen is equal to or less than the prescribed number N of facilities (determined as YES in S108), the facility icons are displayed overlaid on the map. For example, when the number of facilities existing within the display range of the display screen is 1 and the prescribed number of facilities N is 3, as shown in FIG. 3, the facility icons of the facilities existing within the display range of the display screen Are superimposed on the map (S110) and the process is terminated.

  In S108, when it is determined that the number of facility icons to be displayed on the display screen is larger than the prescribed number N of facilities (determined as NO in S108), only the map is displayed without displaying the facility icons. For example, when the number of facilities existing within the display range of the display screen is 5 and the specified number of facilities N is 3, only the map is displayed without displaying the facility icon (S112).

  Next, a message such as “There are a lot of facilities in the vicinity, so the corresponding facility icon is not displayed” is displayed on the display screen of the LCD display device 14 (S114), and the process is terminated.

  As described above, the CPU 16 acquires map data including a road map and a facility icon indicating a facility on the road map from the storage medium of the DVD deck 13, and uses the acquired road map data to acquire the road map and the road. A facility icon indicating a facility on the map is displayed on the display screen of the LCD display device 14. If the number of facility icons to be displayed on the display screen of the LCD display device 14 is larger than the prescribed number of facilities N, the facility icons are not displayed.

  In this way, the CPU 16 hides the facility icons when the number of facility icons to be displayed on the display screen of the LCD display device 14 is larger than the prescribed number of facilities N, so there are many facilities on the display screen. In this case, the facility icon can be automatically hidden.

  Further, when the plurality of facility icons are hidden, the CPU 16 displays on the display screen that the plurality of facility icons are hidden, so that the user does not have the facility or the facility icon is hidden. You can judge whether you are just.

  In the above embodiment, the map data acquisition means corresponds to means for the CPU 16 to acquire map data and facility information from the storage medium of the DVD deck 13, the display means corresponds to the LCD display device 14, and the display control means 2 corresponds to the processing of S108 and S112 in FIG. 2, and the vehicle position acquisition means corresponds to a process of acquiring the position information (current location, traveling direction) of the vehicle by signals input from the GPS receiver 11 and the gyroscope 12. The route setting means corresponds to processing for setting a guide route to the destination.

  The present invention is not limited to the above-described embodiment, and can be implemented in various forms based on the gist of the present invention.

  For example, in the present embodiment, as the facility information including the facility icon, a specific restaurant, convenience store, gas station, or the like at a point in the map is shown as an example. However, the facility information is limited to such a specific facility. Other facilities may be added to the facility information.

  In the above embodiment, an example in which it is determined in S108 in FIG. 2 whether or not the number of facility icons to be displayed on the display screen is greater than a predetermined number N of predetermined facilities is shown on the display screen. Without being limited to the number of facility icons to be displayed, for example, based on the position information of the own vehicle acquired by the GPS receiver 11 and the gyroscope 12, the current location of the own vehicle (for example, the current location of the own vehicle) Whether the number of facility icons for facilities existing within a radius of 5 km from the center) and the number of facility icons for facilities existing within the predetermined range of the current location of the identified vehicle is greater than the prescribed number of facilities N It may be determined whether or not.

  In S108 of FIG. 2, for example, within a predetermined range in the traveling direction of the own vehicle based on the position information of the own vehicle acquired by the GPS receiver 11 and the gyroscope 12 (for example, a range of 3 km at both ends along the traveling road). The number of facility icons of the facility existing in the vehicle is specified, and it is determined whether or not the number of facility icons of the facility existing within the predetermined range in the traveling direction of the specified vehicle is greater than the prescribed number of facilities N Good.

  If the guide route to the destination is set, in S108 of FIG. 2, the facility icon of the facility existing in the predetermined range around the set guide route (for example, the range of 3 km on both ends along the guide route) is set. The number may be specified, and it may be determined whether or not the number of facility icons of facilities existing in a predetermined range around the specified guide route is greater than a predetermined number N.

It is a figure which shows the block configuration of the navigation apparatus which concerns on one Embodiment of this invention. It is a figure which shows the display process of the facility icon by CPU of a navigation apparatus. It is a figure which shows the example of a display of a facility icon. It is explanatory drawing about the overlap of a facility icon.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Navigation apparatus, 11 ... GPS receiver, 11a ... GPS antenna,
12 ... Gyroscope, 13 ... DVD deck, 14 ... LCD display,
15 ... Memory, 16 ... CPU.

Claims (6)

Map data acquisition means for acquiring map data including a road map and a facility icon indicating a facility on the road map;
A navigation device comprising display control means for displaying the road map and a facility icon indicating a facility on the road map on the display screen of the display means, using the map data acquired by the map data acquisition means,
The display device is configured to hide the facility icons when the number of facility icons is larger than a prescribed number of facilities. The display control unit specifies the number of facility icons to be displayed on the display screen of the display unit, and when the number of facility icons to be displayed on the display screen of the specified display unit is larger than a prescribed number of facilities, the facility icon The navigation device according to claim 1, wherein: is not displayed. Equipped with own vehicle position acquisition means for acquiring own vehicle position information;
The display control means specifies the number of facility icons of facilities existing within a predetermined range of the current location of the own vehicle based on the position information of the own vehicle acquired by the own vehicle position acquisition means, and specifies the specified own vehicle The navigation apparatus according to claim 1, wherein the facility icon is not displayed when the number of facility icons of a facility existing within a predetermined range of the current location is larger than a prescribed number of facilities. Equipped with own vehicle position acquisition means for acquiring own vehicle position information;
The display control means identifies the number of facility icons of the facilities existing within a predetermined range in the traveling direction of the own vehicle based on the position information of the own vehicle acquired by the own vehicle position acquisition means, The navigation apparatus according to claim 1, wherein when the number of facility icons of a facility existing within a predetermined range in the traveling direction of the vehicle is larger than a prescribed number of facilities, the facility icon is not displayed. It has route setting means to set a guide route to the destination,
The display control means identifies the number of facility icons of facilities existing within a predetermined range of the guidance route set by the route setting means, and the number of facility icons of facilities located within the predetermined range of the identified guidance route is The navigation device according to claim 1, wherein the facility icon is hidden when the number of facilities is larger than a predetermined number. 6. The display control unit according to claim 1, wherein when the plurality of facility icons are hidden, the display control unit displays on the display screen that the facility icons are hidden. Navigation device.

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