JP2012128100A - Information display device, information display method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information display device, an information display method, and a program that allow validation, by one-time scroll operation, of a facility positioned in a screen peripheral part in a scroll direction at a scroll completion time.SOLUTION: The device includes: display means for displaying a map image including a facility; scroll direction detection means for detecting a scroll direction of the map image input, the direction input via input means used for inputting the scroll direction of the map image; facility discrimination direction determination means for determining, on the basis of the scroll direction, a facility discrimination direction of discriminating presence or absence of a facility only partially displayed on a display screen when a scroll of the map image is stopped; and map image adjustment means for adjusting the map image so as to display the entire facility if the facility only partially displayed is in the facility discrimination direction determined by the facility discrimination direction determination means.

Description

  The present invention relates to an information display device, an information display method, and a program that scroll an image based on a pressing operation on a display screen.

  Conventionally, in an in-vehicle navigation device, a portable information device such as a PDA (Personal Digital Assistant) or a mobile phone, a portable music player, a portable game device, a device equipped with a liquid crystal display such as a personal computer, a user operation is performed. As a means for receiving, there are many devices including a touch panel or the like on the front surface of the liquid crystal display. In an apparatus including such a touch panel, when displaying an image that cannot be displayed on the display screen, the display area to be displayed on the display screen is set as a partial area of the image, and the touch panel provided on the front side of the display screen For example, a display device that performs scrolling display by moving a display area on an image when a user touches the display is used.

  Further, in the scroll control device described in Patent Document 1 below, when it is determined that input data is generated by touching the touch panel and the touch state is determined, a change vector of input coordinates input from the coordinate input unit 4 , The map image is scrolled by a vector equal to or proportional to the change vector. After that, when there is no input data due to the touch on the touch panel and a non-contact state occurs, based on the input coordinate change vector immediately before the coordinate input due to the touch on the touch panel disappears, with a preset attenuation amount, The map image scroll amount is gradually attenuated with time, and the map image is inertial scrolled until the scroll amount becomes zero. As a result, the user can inertial scroll the map image in this scroll direction by pressing the touch panel and jumping the finger in the desired scroll direction.

Japanese Patent Laid-Open No. 10-161628

  However, in the scroll control device described in Patent Document 1 described above, when the user depresses the touch panel and bounces the finger in the desired scroll direction to cause the map image to inertial scroll, the scroll amount becomes zero. The screen stops. For this reason, when there is a facility that is only partially displayed at the periphery of the screen in the scroll direction when the map image is stopped, the scroll operation must be performed by pressing the touch panel again to confirm this facility. There is a problem that it is not easy to use.

  Therefore, the present invention has been made to solve the above-described problems, and is an information display device that can confirm a facility located at the peripheral edge of the screen in the scroll direction at the end of scrolling by one scroll operation, It is an object to provide an information display method and program.

  In order to achieve the above object, an information display device according to claim 1 includes map information storage means for storing map information including facility information relating to a facility, and display means for displaying a map image including the facility based on the map information. An input means for inputting a scroll direction of the map image, a scroll direction detecting means for detecting a scroll direction of the map image input via the input means, and a display when scrolling of the map image is stopped A facility determination direction determining unit that determines a facility determination direction for determining presence or absence of a facility that is only partially displayed on the screen based on the scroll direction, and a facility that is only partially displayed is the facility determination direction determining unit. A facility determination unit that determines whether or not the facility determination direction is determined by the facility determination facility, and the facility that is displayed only partly through the facility determination unit, When it is determined that the facility determination direction is determined by the facility determination direction determination unit, the map image adjustment unit adjusts the map image so that the entire facility is displayed. Features.

  The information display device according to claim 2 is the information display device according to claim 1, wherein the facility determination direction determining means includes a plurality of screen sections divided by a pair of diagonal lines passing through the center on the display screen. Of these, the direction from the center toward the screen section including the unit vector drawn in the scroll direction is determined as the facility discrimination direction.

  The information display device according to claim 3 is the information display device according to claim 1 or 2, wherein the facility that is only partially displayed via the facility determination unit is the facility determination direction determination unit. When it is determined that the facility is determined in the facility determination direction, the display facility determination unit includes a display facility determination unit that determines a display facility that displays the entire facility among the determined facilities. When the scrolling of the map image is stopped and there are a plurality of facilities that are only partially displayed on the facility identification direction display screen, the distance of the display coordinate farthest from the center position of the display screen of each facility is displayed. Based on this, the display facility is determined.

  An information display device according to claim 4 is the information display device according to claim 3, wherein the map image adjustment unit is necessary for displaying the entire display facility determined by the display facility determination unit. A movement amount acquisition unit that acquires a scroll movement amount of the map image; and a movement amount determination unit that determines whether or not the scroll movement amount is equal to or less than a predetermined movement amount. The map image adjustment unit includes the scroll image adjustment unit. When it is determined that the amount of movement is equal to or less than a predetermined amount of movement, the map image is adjusted so that the entire display facility determined by the display facility determining means is displayed.

  Further, the information display device according to claim 5 is the information display device according to claim 3 or 4, wherein the map image adjustment means displays the center position of the display screen of the facility discrimination direction on the map as a display screen. Display determination means for determining whether or not the entire display facility can be displayed by scrolling the map image in the direction of movement to the center of the map, and the map image adjustment means includes the display determination means If it is determined that the entire display facility can be displayed via the map, the map image is scrolled in a direction in which the center position of the display screen in the determination direction on the map moves to the center of the display screen. Display the entire display facility, and if it is determined that the entire display facility cannot be displayed via the display determination means, the scale of the map image is enlarged. To.

  Furthermore, the information display device according to claim 6 is the information display device according to any one of claims 1 to 5, wherein the facility that is only partially displayed via the facility determination unit is the facility determination. A facility determination direction for determining whether or not there is a facility that is only partially displayed on a display screen in a direction other than the facility determination direction when it is determined that the facility determination direction is determined by the direction determination means. When it is determined that there is no facility that is only partially displayed on the display screen in a direction other than the facility determination direction by the facility determination direction out-of-facility determination direction, The map image is adjusted so that the entire facility that is only partially displayed in the facility determination direction is displayed.

  An information display method according to claim 7 is input via a display step of displaying a map image including the facility based on map information including facility information regarding the facility, and an input means for inputting a scroll direction of the map image. A scroll direction detecting step for detecting a scroll direction of the map image, and a facility determination direction for determining presence / absence of a facility that is only partially displayed when the scroll of the map image is stopped based on the scroll direction. A facility determination direction determination step to determine, a facility determination step to determine whether or not the facility that is only partially displayed is in the facility determination direction determined in the facility determination direction determination step, and the facility determination step When it is determined that the part of the facility that is only partially displayed is in the facility determination direction determined in the facility determination direction determination step, the entire facility is displayed. A map image adjustment step of the adjusting map image so, and further comprising a.

  Furthermore, the program according to claim 8 is provided on a computer via a display step of displaying a map image including the facility based on map information including the facility information regarding the facility, and an input means for inputting a scroll direction of the map image. Based on the scroll direction, a scroll direction detection step for detecting a scroll direction of the input map image and a facility determination direction for determining presence or absence of a facility that is only partially displayed when scrolling of the map image is stopped. A facility determination direction determining step, a facility determination step for determining whether or not the facility that is only partially displayed is in the facility determination direction determined in the facility determination direction determination step, and the facility determination step If it is determined that the facility displayed only in part is in the facility determination direction determined in the facility determination direction determination step, A map image adjustment step of the body to adjust the map image to be displayed, a program for execution.

  In the information display device according to claim 1, the information display method according to claim 7, and the program according to claim 8 having the above configuration, only a part is displayed on the display screen of the facility determination direction determined based on the scroll direction. If there is a new facility, the map image is adjusted so that the entire facility is displayed. Thereby, it is possible to reliably display the entire facility located at the peripheral edge of the screen in the facility determination direction determined based on the scroll direction at the end of scrolling by a single scroll operation. Therefore, the user can easily check each facility displayed on the peripheral edge of the screen in the facility determination direction determined based on the scroll direction by one scroll operation, and can quickly set the destination. Become.

  Further, in the information display device according to claim 2, by determining the direction toward the screen section including the unit vector drawn in the scroll direction from the center on the display screen as the facility discrimination direction, the scroll direction desired by the user is determined. The facility, that is, the facility that the user wants to confirm can be displayed reliably.

  In the information display device according to claim 3, when there are a plurality of facilities that are only partially displayed on the periphery of the display screen in the facility determination direction, the display coordinates farthest from the center position of the display screen of each facility are displayed. In order to determine the display facilities based on the distance, even when there are a plurality of facilities that are only partially displayed, a plurality of facilities displayed on the peripheral edge of the screen in the scroll direction are displayed on the display screen at the end of scrolling. be able to.

  In the information display device according to claim 4, the map image is displayed so that the entire display facility is displayed when the scroll movement amount of the map image necessary for displaying the entire display facility is equal to or less than the predetermined movement amount. Adjust. As a result, the area of the facility that is only partially displayed is wide, such as a national park or a large-scale amusement park, and if the center of the screen moves too much by adding and scrolling, the user feels uncomfortable. Therefore, it is possible to prevent the entire facility from being displayed.

  Further, in the information display device according to claim 5, even when the entire display facility cannot be displayed by scrolling the map image in the direction in which the center position of the display screen in the facility determination direction moves to the center of the display screen. The scale of the map image can be enlarged and the entire display facility can be reliably displayed. Therefore, the user can easily confirm each facility displayed on the peripheral edge of the screen in the scroll direction by one scroll operation.

  Further, in the information display device according to claim 6, the map image is adjusted only when there is no facility displayed only at the periphery of the display screen in a direction other than the facility determination direction. Facilities that are erased from the peripheral edge of the screen can be eliminated.

It is the block diagram which showed the navigation apparatus which concerns on a present Example. It is a main flowchart which shows the "scroll process" which scrolls a map image when scroll operation is carried out. 3 is a sub-flowchart showing a sub-process of “facility discrimination direction determination process” in FIG. 2. 3 is a sub-flowchart showing a sub-process of “display facility determination process” in FIG. 2. 3 is a sub-flowchart showing a sub-process of “Map image adjustment process” in FIG. 2. It is explanatory drawing explaining the setting of a facility discrimination | determination direction. It is a figure which shows an example of the state in which a display facility is located in the edge part of a facility discrimination | determination direction. It is a figure which shows an example which adjusted the map image of FIG. It is a figure which shows an example of the state in which a display facility is located outside the both ends of the edge part of a facility discrimination | determination direction. It is a figure which shows an example which adjusted the map image of FIG. It is a figure which shows an example of the state in which a display facility is located inside the both ends of the edge part of a facility discrimination | determination direction. It is a figure which shows an example which adjusted the map image of FIG.

  Hereinafter, an information display device, an information display method, and a program according to the present invention will be described in detail with reference to the drawings based on an embodiment in which a navigation device is embodied.

[Schematic configuration of navigation device]
First, a schematic configuration of the navigation device according to the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing a navigation device 1 according to the present embodiment.
As shown in FIG. 1, the navigation apparatus 1 according to the present embodiment includes a current location detection processing unit 11 that detects the current position of the host vehicle, a data recording unit 12 that records various data, and input information. On the basis of the navigation control unit 13 for performing various arithmetic processes, the operation unit 14 for receiving operations from the operator, the liquid crystal display 15 for displaying information such as a map to the operator, and voice regarding route guidance and the like. A communication device 17 that communicates between a speaker 16 that outputs guidance, a road traffic information center (not shown), a map information distribution center, and the like via a mobile phone network, etc., and a touch panel that is mounted on the surface of the liquid crystal display 15 18. The navigation control unit 13 is connected to a vehicle speed sensor 21 that detects the traveling speed of the vehicle.

  Hereinafter, each component constituting the navigation device 1 will be described. The current location detection processing unit 11 includes a GPS 31, a direction sensor 32, a distance sensor 33, and the like. )), It is possible to detect the direction of the vehicle, the travel distance, and the like indicating the direction of the vehicle.

  The data recording unit 12 reads out an external storage device and a hard disk (not shown) as a recording medium, a map information database (map information DB) 25 stored in the hard disk, a predetermined program, etc. And a driver (not shown) for writing data.

  The map information DB 25 stores navigation map information 26 used for travel guidance and route search of the navigation device 1. Here, the navigation map information 26 includes various information necessary for route guidance and map display. For example, new road information for identifying each new road, map display data for displaying a map, Search for intersection data for each intersection, node data for node points, link data for roads (links), search data for searching for routes, store data related to POI (Point of Interest) such as stores that are a type of facility, points It consists of search data and so on.

In addition, as store data, names, addresses, telephone numbers, and coordinate positions on the map (for example, POIs such as hotels, amusement parks, palaces, hospitals, gas stations, parking lots, stations, airports, and ferry platforms in each region) Latitude and longitude.), Data such as a facility icon for displaying the location of the facility on the map is stored together with an ID for identifying the POI.
The contents of the map information DB 25 are updated by downloading update information distributed from the map information distribution center (not shown) via the communication device 17.

  As shown in FIG. 1, the navigation control unit 13 constituting the navigation device 1 is a working device that controls the entire navigation device 1, the CPU 41 as the control device, and the CPU 41 performs various types of arithmetic processing. An internal storage device such as a RAM 42 that is used as a memory and stores route data when a route is searched, a ROM 43 that stores a control program, and a flash memory 44 that stores a program read from the ROM 43 In addition, a timer 45 for measuring time is provided.

The ROM 43 also has a “scroll process” for scrolling the map image in the direction in which the finger is moved when a user described later performs a drag operation by pressing the display screen of the liquid crystal display 15 with a finger (see FIG. 2). Etc. are stored.
Furthermore, the navigation control unit 13 is electrically connected to peripheral devices (actuators) of the operation unit 14, the liquid crystal display 15, the speaker 16, the communication device 17, and the touch panel 18.

  This operation unit 14 is operated when correcting the current position at the start of traveling, inputting a departure point as a guidance start point and a destination as a guidance end point, or searching for information about facilities, etc. Key and a plurality of operation switches. The navigation control unit 13 performs control to execute various corresponding operations based on switch signals output by pressing the switches.

  Further, the liquid crystal display 15 includes map information currently traveling, map information around the destination, operation guidance, operation menu, key guidance, recommended route from the current location to the destination, guidance information along the recommended route, traffic Information, news, weather forecast, time, mail, TV program, etc. are displayed.

  In addition, the speaker 16 outputs voice guidance or the like for guiding traveling along the recommended route based on an instruction from the navigation control unit 13. Here, the voice guidance to be guided includes, for example, “200m ahead, turn right at XX intersection”.

  The communication device 17 is a communication unit such as a mobile phone network that communicates with a map information distribution center (not shown), and transmits / receives the latest version of updated map information and the like to / from the map information distribution center. Further, in addition to the map information distribution center, the communication device 17 receives traffic information composed of information such as traffic congestion information transmitted from the road traffic information center and the like and congestion status of the service area.

  The touch panel 18 is a transparent panel-like touch switch mounted on the display screen of the liquid crystal display 15. Various instruction commands can be input by pressing buttons or a map displayed on the screen of the liquid crystal display 15. In addition, when a finger is pressed on the display screen and a drag operation is performed, the movement direction of the finger can be detected. Note that the touch panel 18 may be configured by an optical sensor liquid crystal method or the like that directly presses the screen of the liquid crystal display 15.

[Scroll processing]
Next, a process executed by the CPU 41 of the navigation device 1 configured as described above, and when the user performs a drag operation by pressing the display screen of the liquid crystal display 15 with a finger, the direction in which the finger is moved A “scroll process” for scrolling the map image to the right will be described with reference to FIGS. 2 is executed by the CPU 41.

  As shown in FIG. 2, first, in step (hereinafter abbreviated as “S”) 11, the pressed coordinate position (hereinafter referred to as “touch coordinates”) at the start of pressing the touch panel 18 or the previous touch coordinates is acquired. The touch coordinates at each time point are repeatedly acquired and stored in the RAM 42 in chronological order every time 20 milliseconds elapse from the set time. Then, the CPU 41 reads each touch coordinate in chronological order every 20 milliseconds, and scrolls the image so that the point of the image corresponding to the previous touch coordinate moves to the current touch coordinate.

  In S12, the CPU 41 determines a facility determination direction for determining the presence or absence of a facility icon representing a facility partially displayed on the display screen described later, that is, determines the direction of the peripheral portion of the map display area. The sub-process (refer to FIG. 3) of the “determination process” is executed. The map display area is an area on the display screen where the map image is displayed. For example, when a plurality of windows are displayed on one screen, the window area displaying the map image is displayed. It is. In addition, when a plurality of windows are displayed in each screen in a two-screen display or the like, the map display area displays a map image among the plurality of windows displayed on each screen. It is a window area.

  Subsequently, in S13, the CPU 41 executes a determination process for determining whether or not to stop the scrolling of the map image, that is, whether or not the pressing of the touch panel 18 is canceled (hereinafter referred to as “touch-off”). To do. If it is determined that the touch-off has not been confirmed (S13: NO), the CPU 41 executes the processes after S11 again. Note that the CPU 41 determines the touch-off when the touch-off continues for a predetermined time (for example, about 100 milliseconds).

On the other hand, if it is determined that the touch-off has been confirmed (S13: YES), the CPU 41 proceeds to the process of S14. In S14, the CPU 41 stops and displays the scrolled map image.
Thereafter, in S15, the CPU 41 determines whether or not there is a facility icon that is only partially displayed in the periphery of the map display area in the facility determination direction determined in S12, that is, whether or not there is a facility. Execute.

  For example, when the facility determination direction is “upward”, the CPU 41 determines whether there is a facility icon that is only partially displayed at the upper edge of the displayed map image, that is, the upper side of the map display area. Determine. When the facility determination direction is “downward”, the CPU 41 determines whether or not there is a facility icon that is only partially displayed at the lower edge of the displayed map image, that is, at the bottom of the map display area. Determine.

  When the facility determination direction is “left direction”, the CPU 41 determines whether there is a facility icon displayed only partially at the left edge of the displayed map image, that is, the left side of the map display area. Determine. Further, when the facility determination direction is “right direction”, the CPU 41 determines whether or not there is a facility icon that is only partially displayed at the right edge of the displayed map image, that is, the right side of the map display area. Determine.

If it is determined that there is no facility icon that is only partially displayed in the periphery of the map display area in the facility determination direction (S15: NO), the CPU 41 ends the process.
On the other hand, if it is determined that there is a facility icon that is only partially displayed at the periphery of the map display area in the facility determination direction (S15: YES), the CPU 41 proceeds to the process of S16.

In S <b> 16, the CPU 41 determines a facility indicated by a facility icon that is only partially displayed on the periphery of the map display area in the facility determination direction described later as a display facility (see FIG. 4). Execute.
Subsequently, in S17, the CPU 41 executes the sub-process (see FIG. 5) of the “map image adjustment process” for adjusting the map image so as to display the display facility determined in S16 described later, and then performs the process. finish.

[Facility determination direction determination processing]
Next, the sub-process of the “facility determination direction determination process” executed by the CPU 41 in S12 will be described with reference to FIGS.
As shown in FIG. 3, first, in S111, the CPU 41 determines the pressed coordinate position on the map display area from the touch coordinates at the time of touch-off stored in the RAM 42 in S11 and the previous touch coordinates that no longer presses. The movement direction is calculated, and the opposite direction to the movement direction of the pressed coordinate position is stored in the RAM 42 as the scroll direction of the map image.

  Then, as shown in FIG. 6, the CPU 41 sets an intersection of a pair of diagonal lines 51 in the map display area of the liquid crystal display 15 as the center 52 of the map display area, and draws a unit vector 53 from the center 52 in the scroll direction of the map image. . Further, the CPU 41 divides the map display area into four substantially triangular shapes with a pair of diagonal lines 51 and having the center of the map display area as a common vertex. Then, the CPU 41 sets a section having the upper edge of the map display area as the outer peripheral edge as the upper direction determination range 55.

  Further, the CPU 41 sets a section having the left edge of the map display area as the outer peripheral edge as the left direction determination range 56. Further, the CPU 41 sets a section having the lower edge of the map display area as the outer peripheral edge as the downward direction determination range 57. Further, the CPU 41 sets a section having the right edge of the map display area as the outer peripheral edge as the right direction determination range 58.

  Subsequently, in S112, the CPU 41 determines whether or not the scroll direction belongs to the upward direction determination range 55, that is, whether or not the unit vector 53 subtracted from the center 52 of the map display area belongs to the upward direction determination range 55. A determination process for determining When it is determined that the unit vector 53 drawn from the center 52 of the map display area belongs to the upward direction determination range 55 (S112: YES), the CPU 41 proceeds to the process of S113. When the unit vector 53 is on the diagonal line 51, it is determined that the unit vector 53 belongs to the upward direction determination range 55.

  In S113, the CPU 41 determines whether or not there is a facility icon that is only partially displayed in S15, that is, the facility determination direction for specifying the peripheral portion of the map display area for determining whether or not there is a facility. After selecting the “upward direction” and storing it in the RAM 42, the sub-process is terminated, the process returns to the main flowchart, and the process proceeds to S13.

  On the other hand, when it is determined that the unit vector 53 drawn from the center 52 of the map display area does not belong to the upward direction determination range 55 (S112: NO), the CPU 41 proceeds to the process of S114. In S <b> 114, the CPU 41 determines whether or not the scroll direction belongs to the downward direction determination range 57, that is, whether or not the unit vector 53 subtracted from the center 52 of the map display area belongs to the downward direction determination range 57. Execute the judgment process.

  When it is determined that the unit vector 53 drawn from the center 52 of the map display area belongs to the downward direction determination range 57 (S114: YES), the CPU 41 proceeds to the process of S115. When the unit vector 53 is on the diagonal line 51, it is determined that the unit vector 53 belongs to the downward direction determination range 57.

  In S115, the CPU 41 determines whether or not there is a facility icon displayed only in part in S15, that is, the facility determination direction for specifying the peripheral portion of the map display area for determining whether or not there is a facility. After determining in the “downward direction” and storing in the RAM 42, the sub-process is terminated, the process returns to the main flowchart, and the process proceeds to S13.

  On the other hand, if it is determined that the unit vector 53 drawn from the center 52 of the map display area does not belong to the downward direction determination range 57 (S114: NO), the CPU 41 proceeds to the process of S116. In S116, the CPU 41 determines whether or not the scroll direction belongs to the left direction determination range 56, that is, whether or not the unit vector 53 subtracted from the center 52 of the map display area belongs to the left direction determination range 56. Execute the judgment process. When it is determined that the unit vector 53 drawn from the center 52 of the map display area belongs to the left direction determination range 56 (S116: YES), the CPU 41 proceeds to the process of S117.

  In S117, the CPU 41 determines whether or not there is a facility icon displayed only in part in S15, that is, the facility determination direction for specifying the peripheral portion of the map display area for determining whether or not there is a facility. "Left direction" is determined and stored in the RAM 42. Then, the sub-process is terminated, the process returns to the main flowchart, and the process proceeds to S13.

  On the other hand, if it is determined that the unit vector 53 drawn from the center 52 of the map display area does not belong to the left direction determination range 56 (S116: NO), the CPU 41 proceeds to the process of S118. In S118, the CPU 41 determines whether or not there is a facility icon that is only partially displayed in S15, that is, the facility determination direction for specifying the peripheral portion of the map display area for determining whether or not there is a facility. "Right" is determined and stored in the RAM 42. Then, the sub-process is terminated, the process returns to the main flowchart, and the process proceeds to S13.

[Display facility decision processing]
Next, the sub-process of “display facility determination process” executed by the CPU 41 in S16 will be described with reference to FIGS.
As shown in FIG. 4, first, in S211, the CPU 41 is only partly on the periphery of the map display area in the facility determination direction determined in S12, that is, on the edge of the map display area in the facility determination direction. A determination process for determining whether or not there is one facility indicated by the displayed facility icon is executed.

  When it is determined that there is only one facility indicated by the facility icon displayed only partially at the edge of the map display area in the facility determination direction, that is, at the edge of the map display area in the facility determination direction. (S211: YES), the CPU 41 proceeds to the process of S212. In S212, the CPU 41 determines the facility indicated by the partially displayed facility icon as the “display facility”, stores it in the RAM 42, ends the sub-process, returns to the main flowchart, and proceeds to the process of S17. Transition.

  On the other hand, if it is determined that there are a plurality of facilities indicated by the facility icons displayed only partially in the periphery of the map display area in the facility determination direction (S211: NO), the CPU 41 proceeds to the process of S213. . In S213, the CPU 41 calculates the maximum distance from the center of the map image, that is, from the center of the map display area to the display coordinates of each facility icon displayed only partially.

  For example, as shown in FIG. 7, when the facility determination direction is determined to be “upward” in S12, the CPU 41 parks at the upper edge of the displayed map image, that is, the upper side of the map display area. A parking lot icon 61 indicating the position of the parking lot and a building icon 62 indicating the position of the building are selected as a partly displayed facility icon. Then, the CPU 41 calculates the maximum distances L1 and L2 from the center 52 of the map display area to the display coordinates of the parking lot icon 61 and the building icon 62, respectively.

  Subsequently, in S214, the CPU 41 compares the maximum distance from the center of the displayed map image, that is, from the center of the map display area to the display coordinates of each of the facility icons displayed only partially, and displays the map display area. A determination process for determining whether there is a facility icon having a display coordinate farthest from the center is executed. If it is determined that there is a facility icon having the display coordinates farthest from the center of the map display area (S214: YES), the CPU 41 proceeds to the process of S215.

In S215, the CPU 41 determines the facility indicated by the facility icon having the display coordinate farthest from the center of the map display area as the “display facility”, stores it in the RAM 42, ends the sub-processing, and returns to the main flowchart. , The process proceeds to S17.
For example, as shown in FIG. 7, when the maximum distance L1 from the center 52 of the map display area to the display coordinates of the parking lot icon 61 is the largest, the CPU 41 designates the facility indicated by the parking lot icon 61 as “display facility”. And stored in the RAM 42.

  On the other hand, there is no facility icon having the display coordinates farthest from the center of the map display area, that is, there are a plurality of the same maximum distance from the center of the map display area to the display coordinates of each partially displayed facility icon. (S214: NO), the CPU 41 proceeds to the process of S216. In S216, the CPU 41 determines each facility indicated by a plurality of facility icons having the same maximum distance as a “display facility”, stores it in the RAM 42, ends the sub-process, returns to the main flowchart, and performs the process in S17. Migrate to

[Map image adjustment processing]
Next, the sub-process of the “map image adjustment process” executed by the CPU 41 in S17 will be described with reference to FIGS. 5 and 7 to 12.
As shown in FIG. 5, first, in S <b> 311, the CPU 41 reads “display facility” determined in S <b> 16 from the RAM 42, scrolls the map image in the “facility determination direction” determined in S <b> 12, and displays the “display”. The amount of scroll movement required to display the entire facility icon indicating “facility” in the map display area is calculated.

  Subsequently, in S312, the CPU 41 determines whether or not the scroll movement amount calculated in S311 is not more than a predetermined movement amount (for example, not more than about 1/3 of the width of the map display area in the scroll direction). The determination process to be executed is executed. If it is determined that the scroll movement amount is larger than the predetermined movement amount (S312: NO), the CPU 41 ends the sub-process without scrolling the map image and returns to the main flowchart.

  On the other hand, when it is determined that the scroll movement amount is equal to or less than the predetermined movement amount (S312: YES), the CPU 41 proceeds to the process of S313. In S <b> 313, the CPU 41 reads out the “display facility” determined in S <b> 16 from the RAM 42, and executes a determination process for determining whether or not one is used. If it is determined that there is one “display facility” (S313: YES), the CPU 41 proceeds to the process of S314.

  In S314, the CPU 41 scrolls the map image in the “facility discrimination direction” determined in S12 by the scroll movement amount calculated in S311 and displays the entire facility icon indicating the “display facility” in the map display area. To display. That is, the map image is displayed in such a direction that the point facing the center position of the peripheral portion of the map display area in the facility determination direction moves to the center of the map display area so as to display the entire facility icon corresponding to the “display facility”. After scrolling, the sub-process is terminated and the process returns to the main flowchart.

  For example, as illustrated in FIG. 7, when the facility indicated by the parking lot icon 61 having the largest maximum distance L1 from the center 52 of the map display area is determined as the “display facility”, the CPU 41 displays the map image. By scrolling upward, the amount of scroll movement required to display the entire parking lot icon 61 indicating the “display facility” in the map display area is calculated. Then, as shown in FIG. 8, the CPU 41 scrolls the map image “upward” by this scroll movement amount and displays the entire parking lot icon 61 and building icon 62 in the map display area.

  On the other hand, when it is determined that there are a plurality of “display facilities” determined in S16, that is, there are two display facilities having the same maximum distance from the center of the map display area to the display coordinates of the facility icon (S313: NO), CPU41 transfers to the process of S315. In S315, the CPU 41 determines whether or not each “display facility” is located outside the both ends of the edge portion of the map display area in the “facility discrimination direction” determined in S12 above the edge portion. A determination process for determining is executed.

  When it is determined that each “display facility” is located outside the both ends of the edge portion of the map display area in the “facility determination direction” determined in S12 above (S315: YES), the CPU 41 proceeds to the process of S316. In S316, the CPU 41 enlarges the scale of the map image based on the maximum distance from the center of the map display area to the display coordinates of each facility icon displayed only partially, and displays the entire facility icon in the map display area. After being displayed, the sub-process is terminated and the process returns to the main flowchart.

  For example, as shown in FIG. 9, the facility determination direction determined in S12 is “upward”, and there are two parking icons 63 and two building icons 64 that are only partially displayed at the upper edge of the map display area. These are located outside the both ends of the upper edge of the map display area along the edge. In this case, as shown in FIG. 10, the CPU 41 determines that the maximum distance L3 from the center 52 of the map display region to the display coordinates of the parking icon 63 and the building icon 64 that are only partially displayed is the maximum. The scale of the map image is enlarged until the distance L4 is reached, and the entire parking lot icon 63 and building icon 64 are displayed in the map display area.

  On the other hand, if it is determined that each “display facility” is positioned inside both ends of the edge of the map display area in the “facility determination direction” determined in S12 (S315: NO), the CPU 41 performs S317. Move on to processing. In S317, the CPU 41 scrolls the map image in the “facility discrimination direction” determined in S12 by the scroll movement amount calculated in S311 and displays the entire facility icons in the map display area. End the sub-process and return to the main flowchart.

  For example, as shown in FIG. 11, the facility determination direction determined in S12 is “upward”, and there are two parking icons 65 and two building icons 66 that are only partially displayed at the upper edge of the map display area. These are located inside both ends of the upper edge of the map display area. In this case, the CPU 41 calculates a scroll movement amount necessary for displaying the entire parking lot icon 65 and the building icon 66 in the map display area. Then, as shown in FIG. 12, the CPU 41 scrolls the map image “upward” by this scroll movement amount, and displays the entire parking icon 65 and building icon 66 in the map display area.

  As described in detail above, in the navigation device 1 according to the present embodiment, the CPU 41 draws the unit vector 53 in the scroll direction from the center 52 of the map display area. Then, the CPU 41 determines the direction from the center 52 of the map display area toward the center position of the peripheral edge of each of the direction determination ranges 55 to 58 including the unit vector 53 as the facility determination direction, and the user desires. The facility in the scroll direction, that is, the facility that the user wants to confirm can be displayed reliably.

  In addition, when there is one facility icon that is partially displayed at the periphery of the map display area in the facility determination direction, the CPU 41 determines the facility indicated by the facility icon as a “display facility”, and only a part thereof If there are two or more displayed facility icons, the facility indicated by the facility icon having the display coordinates farthest from the center of the map display area is determined as the “display facility”. When there are two facility icons having the same distance from the center of the map display area to the farthest display coordinates, each facility indicated by the two facility icons is determined as a “display facility”.

  Then, the map image is scrolled in such a direction that the center position of the peripheral portion of the map display area in the facility determination direction moves to the center of the map display area so as to display the entire facility icon corresponding to the “display facility”. Further, even when the map image cannot be scrolled to display the entire facility icon corresponding to “display facility”, the scale of the map image can be enlarged to reliably display the entire display facility.

  Thereby, the whole each facility icon located in the map display area peripheral part of a scroll direction can be reliably displayed at the time of a scroll end. Therefore, the user can display a plurality of facilities displayed on the periphery of the map display area in the scroll direction on the display screen by one scroll operation.

  In addition, when the scroll movement amount necessary for reliably displaying the entire facility icons located at the periphery of the map display area in the scroll direction at the end of scrolling is larger than the predetermined movement amount, a part of each facility icon is included. Stop scrolling with only the display. As a result, if the area of the facility that is only partially displayed is large, such as a national park or a large-scale amusement park, and the center of the map display area moves too much by scrolling additionally, the It is possible to prevent the entire facility from being displayed without giving a sense of incongruity.

  In addition, this invention is not limited to the said Example, Of course, various improvement and deformation | transformation are possible within the range which does not deviate from the summary of this invention. For example, the following may be used.

  (A) For example, when it is determined that the touch-off has been confirmed (S13: YES), the CPU 41 may shift to the process of S15 without executing the process of S14. Thereby, it is possible to smoothly scroll and display the facility icons so as to display the entire facility icon located at the periphery of the map display area without temporarily stopping the map image.

  (B) If it is determined in S15 that there is a facility icon that is only partially displayed in the periphery of the map display area in the facility determination direction (S15: YES), the CPU 41 maps other than the facility determination direction. You may make it perform the determination process which determines whether there exists any facility icon displayed only in part also in the display area peripheral part. If it is determined that there is a facility icon that is only partially displayed in the periphery of the map display area other than the facility determination direction, the CPU 41 may end the process. On the other hand, when it is determined that there is no partly displayed facility icon in the peripheral area of the map display area other than the facility determination direction, the CPU 41 may execute the processes after S16.

  Thereby, in order to scroll the map image or to enlarge the scale of the map image only when there is no facility icon only partially displayed in the peripheral part of the map display area in the direction other than the facility determination direction, Facilities that are erased from the map display area by scrolling or scaling up can be eliminated.

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 14 Operation part 15 Liquid crystal display 18 Touch panel 25 Map information DB
26 Navi Map Information 41 CPU
42 RAM
43 ROM
51 Diagonal line 52 Center 53 Unit vector 55 Up direction determination range 56 Left direction determination range 57 Down direction determination range 58 Right direction determination range 61, 63, 65 Parking icon 62, 64, 66 Building icon

Claims (8)

Map information storage means for storing map information including facility information about the facility;
Display means for displaying a map image including the facility based on the map information;
Input means for inputting a scroll direction of the map image;
Scroll direction detecting means for detecting a scroll direction of the map image input via the input means;
A facility determination direction determining means for determining a facility determination direction for determining whether or not there is a facility that is only partially displayed on the display screen when scrolling of the map image is stopped; and
Facility determination means for determining whether the part of the displayed facility is in the facility determination direction determined by the facility determination direction determination means;
When it is determined that the facility that is only partially displayed through the facility determination unit is in the facility determination direction determined by the facility determination direction determination unit, the entire facility is displayed. Map image adjusting means for adjusting the map image;
An information display device comprising:   The facility determination direction determining means is configured to select a direction toward a screen section including a unit vector drawn from the center in the scroll direction from among the plurality of screen sections divided by a pair of diagonal lines passing through the center on the display screen. The information display device according to claim 1, wherein the information display device is determined as a facility discrimination direction. When it is determined that the facility that is only partially displayed via the facility determination means is in the facility determination direction determined by the facility determination direction determination means, the entire facility among the determined facilities Display facility determining means for determining a display facility for displaying
When the scroll of the map image is stopped, the display facility determining means, when there are a plurality of facilities displayed only partially on the display screen in the facility determination direction, the center position of the display screen of each facility The information display device according to claim 1, wherein the display facility is determined based on a distance of a display coordinate farthest from the display. The map image adjusting means includes
A movement amount acquisition means for acquiring a scroll movement amount of a map image necessary for displaying the entire display facility determined by the display facility determination means;
A movement amount determination means for determining whether or not the scroll movement amount is equal to or less than a predetermined movement amount;
Have
The map image adjusting unit adjusts the map image so that the entire display facility determined by the display facility determining unit is displayed when it is determined that the scroll movement amount is equal to or less than a predetermined movement amount. The information display device according to claim 3. Whether the map image adjusting means can display the entire display facility by scrolling the map image in a direction in which the center position of the display screen of the facility determination direction on the map moves to the center of the display screen. Display determination means for determining whether or not,
The map image adjusting means includes:
When it is determined that the entire display facility can be displayed via the display determination unit, the map is moved in the direction in which the center position of the display screen in the determination direction on the map moves to the center of the display screen. Scroll the image to display the entire display facility,
The information display according to claim 3 or 4, wherein when it is determined that the entire display facility cannot be displayed via the display determination means, the scale of the map image is enlarged. apparatus. When it is determined that the facility that is only partially displayed via the facility determination unit is in the facility determination direction determined by the facility determination direction determination unit, a display screen in a direction other than the facility determination direction In addition, there is a facility determination means outside the facility determination direction that determines whether there is a facility that is only partially displayed,
The map image adjustment means is located in the facility determination direction when the facility determination means outside the facility determination direction determines that there is no facility that is partially displayed on the display screen in a direction other than the facility determination direction. The information display device according to any one of claims 1 to 5, wherein the map image is adjusted so that an entire facility that is displayed only in a part is displayed. A display step of displaying a map image including the facility based on map information including facility information regarding the facility;
A scroll direction detecting step of detecting a scroll direction of the map image input via an input means for inputting a scroll direction of the map image;
A facility determination direction determining step for determining a facility determination direction for determining presence or absence of a facility that is only partially displayed when scrolling of the map image is stopped; and
A facility determination step for determining whether the part of the displayed facility is in the facility determination direction determined in the facility determination direction determination step;
When it is determined that the facility that is only partially displayed in the facility determination step is in the facility determination direction determined in the facility determination direction determination step, the map is displayed so that the entire facility is displayed. A map image adjustment process for adjusting the image;
An information display method characterized by comprising: On the computer,
A display step of displaying a map image including the facility based on map information including facility information regarding the facility;
A scroll direction detecting step of detecting a scroll direction of the map image input via an input means for inputting a scroll direction of the map image;
A facility determination direction determining step for determining a facility determination direction for determining presence or absence of a facility that is only partially displayed when scrolling of the map image is stopped; and
A facility determination step for determining whether the part of the displayed facility is in the facility determination direction determined in the facility determination direction determination step;
When it is determined that the facility that is only partially displayed in the facility determination step is in the facility determination direction determined in the facility determination direction determination step, the map is displayed so that the entire facility is displayed. A map image adjustment process for adjusting the image;
A program for running

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