JP2012159451A - Map display device, map display method and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a map display device, a map display method and a computer program capable of executing a normal scroll function and an along path scroll function through a simple changeover.SOLUTION: When receiving a scroll operation by a user, the present invention: determines whether or not a prescribed frequency of the scroll operation by the user is received during a prescribed period (S14); determines, when determining that the prescribed frequency of the scroll operation is received during the prescribed period, whether or not a guide path is included in a display object area of a map image while receiving the prescribed frequency of the scroll operation by the user (S18); and executes, when determining that the guide path is included in the display object area of the map image while receiving the prescribed frequency of the scroll operation by the user, a scroll by changing over to an along path scroll to scroll the map image displayed on a liquid crystal display 15 along the guide path (S19).

Description

  The present invention relates to a map display device that displays a map image, a map display method, and a computer program.

  Conventionally, in-vehicle navigation devices, portable information devices such as PDAs (Personal Digital Assistants) and mobile phones, personal computers, and the like, roads and facility names such as general roads and expressways are stored in various storage devices as map data. Alternatively, by downloading from a server or the like, it is possible to display a map image of a desired area on the display device for the user. The navigation device or the like also has a route search function for searching for an optimum route from the departure point to the destination when a desired destination is input, and sets a guide route based on the search result. And it is possible to guide a vehicle to the destination by performing guidance based on the set guidance route.

  In addition, in a conventional navigation device or the like, in order to grasp the shape of the guide route set by the user or the facility information around the guide route, in addition to the normal map image scrolling function, the guide route is used. A so-called scrolling function along a route is provided for scrolling the map image along the line. When the scroll function along the route is executed, the map image displayed on the display device is scrolled along the guidance route automatically or based on the user's button operation (see, for example, JP-A-2008-46059). ).

JP 2008-46059 A (Pages 6 to 8, FIG. 3)

  Here, in the technique described in Patent Document 1, in order to execute the scroll function along the route, the user needs to perform a special mode selection operation for starting the scroll along the route using the operation unit. . That is, as described above, as a function of scrolling the map image displayed on the display device, there are a normal scroll function and a scroll function along a route. If both scroll functions can be executed simultaneously, the respective scroll functions are confused. There is a possibility that scrolling intended by the user cannot be performed. Therefore, conventionally, the configuration is such that the mode is switched to a mode in which the scroll function along the route can be executed only after the user performs a special operation.

  However, if a special operation is imposed on the user in order to execute the scroll function along the route as in Patent Document 1, it causes a hindrance to the user's smooth scroll operation.

  The present invention has been made to solve the above-described conventional problems, and can perform a scroll function along a route without imposing a special operation on the user, while realizing a smooth scroll operation of the user. It is an object of the present invention to provide a map display device, a map display method, and a computer program that can be easily switched and executed without causing the user to confuse the scroll function and the scroll function along the route.

  In order to achieve the above object, a map display device (1) according to claim 1 of the present application includes a map display means (13) for displaying a map image of a display target area on a display device (15), and from a departure place to a destination. A guide route setting means (13) for setting a guide route to the user, an operation accepting means (13) for accepting a user scroll operation for scrolling the map image displayed on the display device, and the operation accepting means. Scroll display means (13) for scrolling the map image displayed on the display device in the scroll direction designated in the received scroll operation of the user, and the user's scroll operation by the operation acceptance means within a predetermined time. When the user receives a predetermined number of scroll operations, the display target area has the An operation determination means (13) for determining whether or not an internal route is included, and the guidance determination route is included in the display target area while the user's predetermined number of scroll operations are received by the operation determination device. And a path-side scroll execution means (13) that switches the scroll of the map image displayed on the display device to a scroll along the path that scrolls along the guide path when it is determined. It is characterized by.

  The map display device (1) according to claim 2 is the map display device according to claim 1, wherein the scroll along the route is executed by the scroll along the route execution means (13). In the case where the user's scroll operation is accepted by the operation accepting means (13), the scroll image instructed in the user's scroll operation is within a predetermined angle range from a direction orthogonal to the guide route. And a scroll release means along the route for releasing the scroll along the route (13).

  A map display device (1) according to claim 3 is the map display device according to claim 1 or 2, wherein the map display device (1) specifies a shape of a link forming the guide route on the map image. Coordinate acquisition means (13) for acquiring the coordinates of the shape complement point (37), and the operation determination means (13), when the coordinates of the shape complement point are included in the display target area, It is determined that the guide route is included in the display target area.

  A map display device (1) according to claim 4 is the map display device according to any one of claims 1 to 3, wherein the map display device (1) is arranged in a display area of the display device (15), and A touch panel (14) that accepts a touch operation; and coordinate acquisition means (13) that acquires touch coordinates that are coordinates of a point touched by the user when the user touches the touch panel. The operation receiving means (13) receives the scroll operation of the user based on a touch operation on the touch panel.

  According to a fifth aspect of the present invention, there is provided a map display method for displaying a map image of a display target area on a display device (15); a guide route setting step for setting a guide route from a departure place to a destination; An operation accepting step for accepting a user's scroll operation for scrolling the map image displayed on the display device, and the display device in a scroll direction instructed in the user's scroll operation accepted by the operation accepting step. A scroll display step for scrolling the map image displayed on the screen, and when the user's scroll operation is received a predetermined number of times within a predetermined time by the operation reception step, Determine whether the guide route is included in the display target area When the operation determining step and the operation determining step determine that the guide route is included in the display target area while receiving the user's predetermined number of scroll operations, the display is displayed on the display device. A scroll along the route that executes scrolling of the map image by switching to scroll along the route that scrolls along the guide route.

  Furthermore, the computer program according to claim 6 is installed in a computer and has a map display function for displaying a map image of the display target area on the display device (15) and a guide for setting a guide route from the departure place to the destination. A route setting function, an operation reception function for receiving a user scroll operation for scrolling the map image displayed on the display device, and a scroll direction instructed by the user scroll operation received by the operation reception function A scroll display function for scrolling the map image displayed on the display device, and when the user's scroll operation is received a predetermined number of times within a predetermined time by the operation reception function, the user performs a predetermined number of scroll operations. Whether or not the guide route is included in the display target area during acceptance When the operation determination function for determining and the operation determination function determine that the guide route is included in the display target area while receiving the user's predetermined number of scroll operations, the display is displayed on the display device. And a scroll execution function along a route that switches the scrolling of the map image to a scroll along a route that scrolls along the guide route.

  According to the map display device according to claim 1, having the above-described configuration, it is possible to execute a scroll function along a route based on a scroll operation without imposing a special operation on the user, and a normal scroll function and a route. A smooth scrolling operation by the user using the along scroll function is realized. On the other hand, the normal scroll function and the scroll function along the route can be easily switched and executed without being confused by the user.

  Moreover, according to the map display apparatus of Claim 2, it becomes possible to cancel | release the scroll function along a path | route based on scroll operation, without imposing special operation on a user. As a result, the normal scroll function and the scroll function along the route can be easily switched and executed.

  According to the map display device of claim 3, when the coordinates of the shape complement point for specifying the shape of the link are included in the display target area of the map image, the display target area of the map image Therefore, it is possible to accurately determine whether or not the guide route is included in the display target area of the map image.

  According to the map display device of claim 4, since the user's scroll operation is accepted based on the touch operation on the touch panel, the map image based on the normal scroll function or the route along scroll function is operated by the operation using the touch panel. Scrolling can be performed appropriately. As a result, the operability regarding the scrolling of the map image can be improved.

  According to the map display method of claim 5, it is possible to execute the scroll function along the route based on the scroll operation without imposing a special operation on the user. A smooth scrolling operation of the user using the function is realized. On the other hand, the normal scroll function and the scroll function along the route can be easily switched and executed without being confused by the user.

  Furthermore, according to the computer program of the sixth aspect, it is possible to execute the scroll function along the path based on the scroll operation without imposing a special operation on the user. A smooth scrolling operation of the user using and is realized. On the other hand, the normal scroll function and the scroll function along the route can be easily switched and executed without being confused by the user.

It is the block diagram which showed the navigation apparatus which concerns on this embodiment. It is the figure which showed the shape complementation point for pinpointing the shape of a link. It is the figure which showed an example of the driving guidance screen displayed on a liquid crystal display during driving | running | working of a vehicle. It is the figure which showed the operation mode at the time of scroll-displaying the map image displayed on a liquid crystal display based on drag operation. It is the figure which showed the operation mode at the time of scroll-displaying the map image displayed on a liquid crystal display based on flick operation. It is a flowchart of the touch coordinate acquisition process program which concerns on this embodiment. It is the figure which showed the schematic diagram of a touch coordinate log | history cue | queue. It is a flowchart of the map image scroll processing program which concerns on this embodiment. It is a flowchart of the scroll process program along a path | route which concerns on this embodiment. It is the figure which showed an example of scroll operation in execution of the scroll function along a path | route. It is the figure which showed the scroll guidance screen which can be displayed on a liquid crystal display during execution of the scroll function along a path | route.

  Hereinafter, a touch panel type operation device according to the present invention will be described in detail with reference to the drawings, based on an embodiment in which the navigation device is embodied. First, a schematic configuration of the navigation device 1 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 this embodiment.

  As shown in FIG. 1, the navigation device 1 according to the present embodiment includes a current position detection unit 11 that detects a current position of a vehicle on which the navigation device 1 is mounted, a data recording unit 12 that records various data, Based on the input information, the navigation ECU 13 that performs various arithmetic processes, the touch panel 14 that receives operations from the user, the liquid crystal display 15 that displays a map around the vehicle to the user, and voice guidance regarding route guidance. A communication module 18 that performs communication with an information center such as a probe center or a VICS (registered trademark: Vehicle Information and Communication System) center; It is composed of

Below, each component which comprises the navigation apparatus 1 is demonstrated in order.
The current position detection unit 11 includes a GPS 21, a vehicle speed sensor 22, a steering sensor 23, a gyro sensor 24, and the like, and can detect the current vehicle position, direction, vehicle traveling speed, current time, and the like. . Here, in particular, the vehicle speed sensor 22 is a sensor for detecting a moving distance and a vehicle speed of the vehicle, generates a pulse according to the rotation of the driving wheel of the vehicle, and outputs a pulse signal to the navigation ECU 13. And navigation ECU13 calculates the rotational speed and moving distance of a driving wheel by counting the generated pulse. Note that the navigation device 1 does not have to include all of the above five types of sensors, and the navigation device 1 may include only one or more of these types of sensors.

Below, each component which comprises the navigation apparatus 1 is demonstrated in order.
The current position detection unit 11 includes a GPS 21, a vehicle speed sensor 22, a steering sensor 23, a gyro sensor 24, and the like, and can detect the current vehicle position, direction, vehicle traveling speed, current time, and the like. . Here, in particular, the vehicle speed sensor 22 is a sensor for detecting a moving distance and a vehicle speed of the vehicle, generates a pulse according to the rotation of the driving wheel of the vehicle, and outputs a pulse signal to the navigation ECU 13. And navigation ECU13 calculates the rotational speed and moving distance of a driving wheel by counting the generated pulse. Note that the navigation device 1 does not have to include all of the above five types of sensors, and the navigation device 1 may include only one or more of these types of sensors.

  The data recording unit 12 is also a hard disk (not shown) as an external storage device and a recording medium, and a driver for reading the map information DB 31 and a predetermined program recorded on the hard disk and writing predetermined data on the hard disk And a recording head (not shown). The data recording unit 12 may be configured by a memory card, an optical disk such as a CD or a DVD, instead of the hard disk.

  Here, the map information DB 31 includes, for example, link data 32 relating to roads (links), node data 33 relating to node points, shape complementing point data 34, point data relating to points such as facilities, map display data for displaying a map, The storage means stores intersection data relating to each intersection, search data for searching for a route, search data for searching for a point, and the like.

The shape complement point data 34 is data related to the shape complement point for specifying the shape of the link on the map image. Here, as shown in FIG. 2, the shape of the link 35 included in the map information is specified by a node point 36 located at both ends and a plurality of shape complement points 37 located between the node points 36. And the shape complement point data 34 memorize | stores the coordinate of a shape complement point for every link contained in map information.
The navigation ECU 13 then moves the navigation device 1 into a map image area (hereinafter referred to as a display target area) to be displayed by the liquid crystal display 15 based on the shape complement point data 34 stored in the map information DB 31 as described later. It is determined whether or not the guidance route set in is included.

  On the other hand, the navigation ECU (Electronic Control Unit) 13 is an electronic control unit that controls the entire navigation device 1. The CPU 41 as an arithmetic device and a control device, and a working memory when the CPU 41 performs various arithmetic processes. In addition to the RAM 42 for storing route data when a route is searched, a control program, a touch coordinate acquisition processing program (see FIG. 6) described later, and a map image scroll processing program (FIG. 8). (Refer to FIG. 9), a ROM 43 in which a scroll processing program along the route (see FIG. 9) is recorded, and an internal storage device such as a flash memory 44 for storing the program read from the ROM 43. The navigation ECU 13 constitutes various means as processing algorithms. For example, the map display means displays a map image of the display target area on the liquid crystal display 15. The guide route setting means sets a guide route from the departure place (for example, the current position of the vehicle) to the destination. The operation accepting means accepts a user scroll operation for scrolling the map image displayed on the liquid crystal display 15, and the scroll display means displays on the liquid crystal display 15 in the scroll direction designated in the accepted user scroll operation. Scroll the map image to be displayed. The operation determining means determines whether or not a guide route is included in the display target area of the map image while receiving the user's predetermined number of scroll operations when the user's scroll operation is received a predetermined number of times within a predetermined time. To do. The route scroll execution means is displayed on the liquid crystal display 15 when the operation determination means determines that the guide route is included in the display target area of the map image while accepting the user's predetermined number of scroll operations. Scrolling the map image is switched to scrolling along the route that scrolls along the guidance route. The along-path scroll release means is a case where a scroll operation along the path is being executed by the along-path scroll execution means when a user's scroll operation is received, and the scroll direction indicated in the user's scroll operation is guided When the map image is scrolled within a predetermined angle range from the direction orthogonal to the route, the scrolling along the route is canceled. The coordinate acquisition means acquires the coordinates of the shape complement point for specifying the shape of the link forming the guide route on the map image. The coordinate acquisition means acquires touch coordinates that are the coordinates of the point touched by the user when the user touches the touch panel 14.

  The touch panel 14 is disposed in front of the display area of the liquid crystal display 15 and is operated when performing a scroll display of a map image or selecting a button disposed in the display area. In addition, the scroll display includes “normal scroll display” in which the map image is scrolled by a predetermined distance in the scroll direction instructed by the user's scroll operation, and “in-path scrolling” in which the map image is scrolled along the guide route. There is a “display”. The touch panel 14 is operated when designating a scroll direction and a scroll distance when performing each scroll display.

Then, the navigation ECU 13 performs a “touch-on” in which the user touches the touch panel 14 from a state in which the user does not touch the touch panel 14 based on a detection signal output from the touch panel 14 by an operation of the touch panel 14, or a user touches the touch panel 14. Detects “touch-off” that shifts from a touched state to a non-touched state. In addition, touch coordinates that are the coordinates of the point touched by the user, and operations for moving the touch position while selecting a selection object such as a map image or a button (that is, a drag operation or a flick operation) are accepted. The displacement of the touch coordinate in the case is also detected. Then, the navigation ECU 13 performs control to execute various operations corresponding to the detected touch operation, touch coordinates, and the like.
An operation button, a remote control, or a mouse may be used instead of the touch panel 14 as an operation unit that receives a user operation.

  The liquid crystal display 15 also includes a map image including a road network, POI icons, traffic information, operation guidance, operation menus, key guidance, a guidance route from the current position to the destination, guidance information along the guidance route, news , Weather forecast, time, mail, TV program, etc. are displayed. Here, FIG. 3 is a diagram showing an example of a travel guidance screen 50 displayed on the liquid crystal display 15 while the vehicle is traveling.

  As shown in FIG. 3, the driving guidance screen 50 displayed on the liquid crystal display 15 includes a map image 51 around the current position of the vehicle, a vehicle position mark 52 indicating the current position of the vehicle matched on the map, A center cursor 53 for specifying the center position of the display target area of the map image, a guide route 54 currently set in the navigation device 1 (displayed only when a guide route is set), and a predetermined function in the navigation device 1 Various buttons 55 to 59 to be selected for execution are displayed. The user can grasp facility information around the current vehicle, road shape (including a guidance route when a guidance route is set), and the like by referring to the travel guidance screen 50. When the detail button 55 is touched on and selected, the scale of the map can be changed to a larger scale. Further, when the display change button 56 is touched on and selected, the display mode (bird's eye view, plan view, nose up, north up, etc.) of the map image 51 can be changed. When the destination set button 57 is touched on and selected, the point indicated by the central cursor 53 can be set as the destination. When the location registration button 58 is touched on and selected, the location indicated by the central cursor 53 can be registered in the navigation device 1 as a registration location. When the wide area button 59 is touched on and selected, the scale of the map can be changed to a smaller scale.

In addition, when the travel guide screen 50 is displayed, the user may desire to grasp the facility or road shape outside the area displayed on the travel guide screen 50. In that case, it is possible to change the scale of the map to a smaller scale, but it is also possible to scroll the map image. Here, in the process of scrolling the map image, when an operation of selecting a map image and dragging in a predetermined direction or an operation of flicking is accepted, the map image is displayed according to the accepted dragging operation or flicking operation. There is a process to scroll.
For example, when scrolling a map image by a drag operation, as shown in FIG. 4, the user touches on the map image 51 to select the map image 51 and scrolls the map image 51 in the selected state ( For example, the finger is moved along the downward direction in FIG. 4 and dragged. For example, as shown in FIG. 4, when the touch-on is performed at the point X1 and the drag is performed to the point X2, the map image 51 scrolls upward by the distance from the point X1 to the point X2. As a result, a map of a new area can be displayed on the travel guide screen 50.
When the map image is scrolled by a flick operation, as shown in FIG. 5, the user touches on the map image 51 to select the map image 51, and scrolls the map image 51 in the selected state ( For example, the touch-off is performed while moving the finger along the downward direction in FIG. For example, as shown in FIG. 5, when a touch-on is performed at a point X3 and a downward flick is performed, the map image 51 is scrolled upward by a distance based on the displacement speed of the touch coordinates immediately before the touch-off. As a result, a map of a new area can be displayed on the travel guide screen 50.

  In the navigation device 1 according to the present embodiment, the user's scroll operation based on the drag operation or flick operation described above is received a predetermined number of times (for example, 3 times) within a predetermined time (for example, 5 seconds), and When a guide route is included in the display target area of the map image while accepting the user's predetermined number of scroll operations, the map image is scrolled by scrolling the map image along the guide route. Switch to "" and execute. The details of “scroll along the route” will be described later.

  The speaker 16 outputs voice guidance for guiding traveling along the guidance route based on an instruction from the navigation ECU 13 and traffic information guidance. It is also used when outputting information related to the found facility when the facility search is performed.

  The DVD drive 17 is a drive that can read data recorded on a recording medium such as a DVD or a CD. Based on the read data, music and video are reproduced, the map information DB 31 is updated, and the like. In addition, it is good also as a structure provided with HDD and a memory card reader instead of the DVD drive 17. FIG.

  The communication module 18 is a communication device for receiving traffic information composed of information such as traffic jam information, regulation information, and traffic accident information transmitted from a traffic information center, for example, a VICS center or a probe center. For example, a mobile phone or DCM is applicable.

  Next, a touch coordinate acquisition processing program executed by the navigation ECU 13 in the navigation device 1 having the above configuration will be described with reference to FIG. FIG. 6 is a flowchart of the touch coordinate acquisition processing program according to this embodiment. Here, the touch coordinate acquisition processing program is repeatedly executed at predetermined intervals (for example, every 200 ms) after the ACC of the vehicle is turned on, and is the coordinates of the touched point when the user touches the touch panel 14. This program acquires touch coordinates. The programs shown in the flowcharts of FIGS. 6, 8, and 9 below are stored in the RAM 42 and ROM 43 provided in the navigation device 1 and executed by the CPU 41.

  First, in step (hereinafter abbreviated as S) 1 in the touch coordinate acquisition processing program, the CPU 41 acquires touch coordinates that are coordinates of a point where the user touches the touch panel 14 based on a detection signal transmitted from the touch panel 14. To do. For example, when the touch panel 14 is a resistive film type or a capacitance type, the touch coordinates are detected by detecting the position of the current that flows based on the pressure at the point touched by the user or the change in capacitance. To do.

  Next, in S2, the CPU 41 determines whether or not the touch coordinates have been acquired in the process of S1. In the state where the user is touching the touch panel 14 (particularly in the case of touching with a pressure of a predetermined value or more in the resistive film method), touch coordinates are acquired in S1.

  And when it determines with the touch coordinate having been acquired by the process of said S1 (S2: YES), it transfers to S3. On the other hand, when it is determined that the touch coordinates could not be acquired in the process of S1 (S2: NO), the touch coordinate acquisition process program is terminated without storing the touch coordinates.

  In S <b> 3, the CPU 41 stores the touch coordinates acquired in the process of S <b> 1 in a touch coordinate history queue provided in the RAM 42. The touch coordinate history queue is configured to store touch coordinate data for a predetermined number of times (for example, four times) immediately before. Here, FIG. 7 is a diagram showing a schematic diagram of the touch coordinate history queue. As shown in FIG. 7, in the state where data of touch coordinates A, B, C, and D are stored in the touch coordinate history queue in order from the oldest data as the data of the last four touch coordinates, the touch coordinates E are newly added. Is acquired, the touch coordinate A data acquired at the oldest timing is deleted, and the touch coordinate E data is newly stored in the touch coordinate history queue. The touch coordinate history queue is initialized when touch-off is confirmed or when a new selection object is selected based on touch-on. Thereafter, the touch coordinate acquisition processing program ends.

  Then, the CPU 41 executes various processes based on the touch coordinates stored in the touch coordinate history queue in S3. For example, selection processing of various buttons 55 to 59 displayed on the liquid crystal display 15, scroll processing of the map image 51 (FIGS. 8 and 9), and the like are performed. Thereafter, the touch coordinate acquisition processing program ends.

  Next, a map image scroll processing program executed by the navigation ECU 13 in the navigation device 1 will be described with reference to FIG. FIG. 8 is a flowchart of the map image scroll processing program according to this embodiment. Here, the map image scroll processing program is executed after the ACC of the vehicle is turned on, and displays a travel guidance screen 50 (FIG. 3) including the map image on the liquid crystal display 15, and based on the operation of the touch panel 14. It is a program that scrolls the displayed map image.

  First, in the map image scroll processing program, the CPU 41 displays a travel guide screen 50 (FIG. 3) on the liquid crystal display 15 in S11. Specifically, in S <b> 11, the CPU 41 displays an area to be displayed (hereinafter, a display target) based on the current position and direction of the vehicle detected by the current position detection unit 11 and the map scale set in the navigation device 1. The map data of the target area is read from the map information DB 31 and a map image 51 based on the read map data is drawn on the liquid crystal display 15. When the current position of the vehicle changes, the display target area of the drawn map data is also changed with the change in the position of the vehicle. In addition to the map image 51 around the current position of the vehicle as described above, the vehicle guidance mark 52, the center cursor 53, and the guidance route 54 are also displayed on the travel guidance screen 50 in a superimposed manner on the map image 51. The

  Next, in S <b> 12, based on the detection signal transmitted from the touch panel 14, the CPU 41 determines whether a user scroll operation for scrolling the map image 51 displayed on the liquid crystal display 15 has been received. Here, the scroll operation includes a drag operation and a flick operation performed with the map image 51 selected as described above.

  In S12, the CPU 41 first determines whether or not the touch coordinates are detected on the touch panel 14, that is, whether or not the user touches the touch panel 14. Specifically, in the coordinate acquisition processing program (FIG. 6) executed at a predetermined interval as described above, the coordinates can be acquired by the processing in the previous program, and the touch coordinates are stored in the touch coordinate history queue (S3). ), It is determined that touch coordinates have been detected. When the CPU 41 determines that the touch coordinates have been detected, the CPU 41 further determines whether a drag operation or a flick operation has been performed in a state where the map image 51 is selected based on the detected displacement of the touch coordinates. To do. If the CPU 41 determines that a drag operation or a flick operation has been performed in a state where the map image 51 is selected, the CPU 41 determines that a user scroll operation for scrolling the map image 51 displayed on the liquid crystal display 15 has been received. To do.

  If it is determined in the determination process of S12 that the user's scroll operation for scrolling the map image 51 displayed on the liquid crystal display 15 is accepted (S12: YES), the process proceeds to S13. On the other hand, when it is determined that the user's scroll operation for scrolling the map image 51 displayed on the liquid crystal display 15 is not accepted (S12: NO), the map image is not scrolled. The image scroll processing program is terminated.

In S <b> 13, the CPU 41 specifies a scroll direction and a scroll distance for scrolling the map image 51 based on the received user scroll operation.
For example, when a drag operation performed while the map image 51 is selected as the scroll operation is received, the direction of the “touch coordinate of the drag end point” relative to the “touch coordinate of the drag start point” is specified as the scroll direction. . Further, the distance from “touch coordinates of drag start point” to “touch coordinates of drag end point” is specified as the scroll distance.
On the other hand, when a flick operation performed while the map image 51 is selected as a scroll operation is received, immediately before “touch-off detection” for “touch coordinates detected immediately before touch-off detection”. The direction of the detected touch coordinates "is specified as the scroll direction. Further, a displacement amount of “touch coordinates detected immediately before touch-off detection” and “touch coordinates detected immediately before touch-off detection” (that is, displacement of touch coordinates immediately before touch-off detection) The distance based on (speed) is specified as the scroll distance.

  Thereafter, in S14, the CPU 41 determines whether or not the user's scroll operation for scrolling the map image 51 displayed on the liquid crystal display 15 has been received a predetermined number of times (for example, 3 times) within a predetermined time (for example, 5 seconds). .

  When it is determined that the user's scroll operation for scrolling the map image 51 displayed on the liquid crystal display 15 has been received a predetermined number of times within a predetermined time (S14: YES), the process proceeds to S16. On the other hand, if it is determined that the user's scroll operation for scrolling the map image 51 displayed on the liquid crystal display 15 has not been received a predetermined number of times within a predetermined time (S14: NO), the process proceeds to S15. Transition.

  In S15, the CPU 41 performs a normal scroll process based on the received user scroll operation. Specifically, the map image 51 displayed on the liquid crystal display 15 is scrolled in the scroll direction specified in S13 by the scroll distance specified in S13 (see FIGS. 4 and 5). As a result, the display target area of the map image is changed, and a map image of a new area can be displayed on the liquid crystal display 15. Thereafter, the map image scroll processing program ends.

  On the other hand, in S <b> 16, the CPU 41 determines whether a guidance route is set in the navigation device 1. Here, the guidance route is a recommended route from the departure point (for example, the current position of the host vehicle) to the destination selected by the user, and is set based on the result of the route search process. The route search process is performed by a known Dijkstra method or the like using link data 32, node data 33, traffic information acquired from the VICS center, or the like stored in the map information DB 31.

  And when it determines with the guidance route being set in the navigation apparatus 1 (S16: YES), it transfers to S17. On the other hand, when it is determined that the guidance route is not set in the navigation device 1 (S16: NO), the process proceeds to S15. In S15, the CPU 41 performs a normal scroll process based on the user's scroll operation received as described above.

  Next, in S <b> 17, the CPU 41 acquires the coordinates of the shape complement points of the links that form the guide route set in the navigation device 1. When the guide route is composed of a plurality of links, the coordinates of the shape complement points of all corresponding links are acquired. Here, the shape complement point is a point for specifying the shape of the link as shown in FIG. 2, and the CPU 41 reads the corresponding shape complement point data 34 from the map information DB 31 to form a link that forms a guide route. Get the coordinates of the shape complement point.

  Subsequently, in S18, the CPU 41 displays the current display target on the liquid crystal display 15 while accepting a predetermined number of user scroll operations performed within a predetermined time based on the coordinates of the shape complement points acquired in S17. It is determined whether or not a guide route is included in the display target area of the map image. Specifically, the CPU 41 specifies the display mode area of the map image while scrolling a predetermined number of times. Next, it is determined whether or not at least one or more coordinates of the shape complement points of the links forming the guide route are included in all the display mode regions of each specified map image. Then, the CPU 41 is performed within a predetermined time when it is determined that at least one or more coordinates of the shape complementing points are included in the display mode area in all of the specified display mode areas of each map image. While receiving a predetermined number of user scroll operations, it is determined that the guide route is included in the display target area of the map image.

  If it is determined that a guide route is included in the display target area of the map image while accepting a predetermined number of user scroll operations performed within a predetermined time (S18: YES), the process proceeds to S19. And migrate. On the other hand, when it is determined that there is a state in which the guide route is not included in the display target area of the map image while accepting a predetermined number of user scroll operations performed within a predetermined time (S18: NO) To S15. In S15, the CPU 41 performs a normal scroll process based on the user's scroll operation received as described above.

  In S <b> 19, the CPU 41 switches the scroll of the map image displayed on the liquid crystal display 15 to the scroll along the route. When the scroll along the route is switched, the map image is scrolled along the guide route based on the user's scroll operation until the scroll along the route is canceled. Details will be described later.

  Next, a route scrolling program executed by the navigation ECU 13 in the navigation device 1 will be described with reference to FIG. FIG. 9 is a flowchart of the route along scroll processing program according to the present embodiment. Here, the route scroll processing program is executed after the scroll of the map image displayed on the liquid crystal display 15 in S19 is switched to the scroll along the route until the scroll along the route is released. A program for scrolling a map image along a guide route based on a scroll operation.

  First, in the along-path scroll processing program, in S21, the CPU 41 determines whether or not a user's scroll operation for scrolling the map image 51 displayed on the liquid crystal display 15 has been received based on the detection signal transmitted from the touch panel 14. To do. Here, the scroll operation includes a drag operation and a flick operation performed with the map image 51 selected as described above. Details are the same as S12 described above, and a description thereof will be omitted.

  And when it determines with having received the scroll operation of the user for scrolling the map image 51 displayed on the liquid crystal display 15 (S21: YES), it transfers to S22. On the other hand, when it is determined that the user's scroll operation for scrolling the map image 51 displayed on the liquid crystal display 15 is not accepted (S21: NO), the route is not performed without scrolling the map image. The along scroll processing program is terminated.

  In S <b> 22, the CPU 41 specifies a scroll direction and a scroll distance for scrolling the map image 51 based on the received user scroll operation. The processing contents to be executed are basically the same as in S13. However, in the state where scrolling along the route is being executed, the scroll direction is set in the “direction toward the destination side of the guide route” included in the display target area of the map image and the display target area of the map image as described later. It is basically specified as one of the included “directions toward the departure side of the guide route”.

  For example, when a drag operation performed while the map image 51 is selected as the scroll operation is received, the distance from the “touch coordinate of the drag start point” to the “touch coordinate of the drag end point” is specified as the scroll distance. The The scroll direction is determined based on the direction of “touch coordinates of drag end point” with respect to “touch coordinates of drag start point” and the shape of the guide route included in the display target area of the map image. Specifically, the direction of the “touch coordinate of the drag end point” with respect to the “touch coordinate of the drag start point” is a direction toward the destination side by a predetermined angle α (for example, 20 degrees) or more than the direction orthogonal to the guide route. In some cases, the scroll direction is specified as “the direction toward the destination side of the guide route”. On the other hand, the direction of the “drag end point touch coordinates” with respect to the “drag start point touch coordinates” is a direction toward the departure point side by a predetermined angle α (for example, 20 degrees) or more than the direction orthogonal to the guide route. In this case, the scroll direction is specified as “a direction toward the departure place side of the guide route”. Further, when the direction of the “drag end point touch coordinates” with respect to the “drag start point touch coordinates” is within a predetermined angle α (for example, 20 degrees) from the direction orthogonal to the guide route, the same as in the normal scroll process. In addition, the direction of “touch coordinates of drag end point” relative to “touch coordinates of drag start point” is specified as the scroll direction.

  On the other hand, when a flick operation performed while the map image 51 is selected as the scroll operation is received, “touch coordinates detected immediately before the touch-off is detected” and “just before the touch-off is detected”. A distance based on the displacement amount of the detected touch coordinates "(that is, the displacement speed of the touch coordinates immediately before detecting the touch-off) is specified as the scroll distance. The scroll direction is included in the direction of “touch coordinates detected immediately before detecting touch-off” and the display target area of the map image with respect to “touch coordinates detected immediately before detecting touch-off”. It is determined based on the shape of the guide route. Specifically, the direction of “touch coordinates detected immediately before detecting touch-off” with respect to “touch coordinates detected immediately before detecting touch-off” is greater than the direction orthogonal to the guide route. When the direction is a direction toward the destination side by an angle α (for example, 20 degrees) or more, the scroll direction is specified as “a direction toward the destination side of the guide route”. On the other hand, the direction of “touch coordinates detected immediately before detecting touch-off” with respect to “touch coordinates detected immediately before detecting touch-off” is a predetermined angle from the direction orthogonal to the guide route. If the direction is toward α (for example, 20 degrees) or more toward the departure point, the scroll direction is specified as “the direction toward the departure point of the guide route”. The shape of the guide route is specified based on the coordinates of the shape complement point acquired in S17. The direction of “touch coordinates detected immediately before detecting touch-off” with respect to “touch coordinates detected immediately before detecting touch-off” is a predetermined angle α (for example, from the direction orthogonal to the guide route) In the case of within 20 degrees, the direction of “touch coordinates detected immediately before detecting touch-off” with respect to “touch coordinates detected immediately before detecting touch-off” as in the normal scroll process Is specified as the scroll direction.

  For example, FIG. 10 illustrates a case where the guide route 61 is included in the display target area of the map image displayed on the liquid crystal display 15. In FIG. 10, immediately before “touch-off detection” with respect to the “touch-coordinate at the drag end point” with respect to the “touch coordinate at the drag start point” and “touch coordinates detected immediately before touch-off detection”. When the direction of the “touch coordinates detected” is included in the angle range (A) (for example, the direction of the arrow 62), the scroll direction is specified as “the direction toward the destination side of the guide route”. On the other hand, it is detected immediately before the touch-off is detected with respect to the direction of the “touch-coordinate at the drag end point” with respect to the “touch coordinates of the drag start point” and the “touch coordinates detected immediately before the touch-off is detected”. When the direction of “touch coordinates” is included in the angle range (B) (for example, the direction of the arrow 63), the scroll direction is specified as “the direction toward the destination side of the guide route”. It is detected immediately before the touch-off is detected with respect to the direction of the “touch-coordinate at the drag end point” with respect to the “touch coordinates of the drag start point” and the “touch coordinates detected immediately before the touch-off is detected”. When the direction of “touch coordinates” is included in the angle range (C) (for example, the direction of the arrow 64), the scroll direction is “the drag end point relative to the“ touch coordinates of the drag start point ”as in the normal scroll process. It is specified in the direction of “touch coordinates” and “touch coordinates detected immediately before detecting touch-off” with respect to “touch coordinates detected immediately before detecting touch-off”. In this case, the scroll function along the route is canceled as will be described later.

  Thereafter, in S23, the CPU 41 determines that the scroll direction instructed by the received user's scroll operation (hereinafter referred to as the scroll instruction direction) is a predetermined angle α (for example, from the direction orthogonal to the guide route included in the display target area of the map image). 20 degrees), it is determined whether the map image is scrolled within the range. Note that the scroll instruction direction is the direction of the “touch coordinate of the drag end point” with respect to the “touch coordinate of the drag start point” when a drag operation performed with the map image 51 selected as the scroll operation is received. When a flick operation performed while the map image 51 is selected as a scroll operation is received, it is detected immediately before the touch-off is detected with respect to the “touch coordinates detected immediately before the touch-off is detected”. The direction of “touch coordinates”.

  When it is determined that the scroll instruction direction is a direction in which the map image is scrolled within a predetermined angle α range from a direction orthogonal to the guide route included in the display target area of the map image (S23: YES), The process proceeds to S25. On the other hand, when it is determined that the scroll instruction direction is not the direction in which the map image is scrolled within the predetermined angle α range from the direction orthogonal to the guide route included in the display target area of the map image (S23: NO). To S24.

  In S <b> 24, the CPU 41 performs a scroll process along the route for scrolling the map image displayed on the liquid crystal display 15 along the guide route. Specifically, the map image displayed on the liquid crystal display 15 is scrolled in the scroll direction specified in S22 by the scroll distance specified in S22. As a result, the display target area of the map image is changed along the guide route, and a map image of a new area around the guide route can be displayed on the liquid crystal display 15. Then, the scroll processing program along the route is terminated.

Here, FIG. 11 is a diagram showing an example of the scroll guide screen 70 of the liquid crystal display 15 when the scroll process along the route is performed in S24.
As shown in FIG. 11, the scroll guidance screen 70 includes a map image 71 around the guide route, a guide route 72 currently set in the navigation device 1, and a center cursor for specifying the center position of the display target area of the map image. 73 and various buttons 74 to 78 to be selected for executing a predetermined function in the navigation device 1 are displayed. When the user's scroll operation is received, the CPU 41 scrolls the map image 71 displayed on the liquid crystal display 15 along the guide route 72 in the departure direction or the destination direction. Specifically, the map image 71 is scrolled in a state where the guide route is always located at the center of the display target area of the map image (the point where the central cursor 73 is displayed).
By referring to the map image 71 scrolled along the guide route 72, the user can grasp the shape of the distant guide route 72 and the environment around the guide route 72.

  On the other hand, in S25, the CPU 41 releases the scroll along the route. In S <b> 26, the CPU 41 performs a normal scroll process based on the received user scroll operation. Specifically, the map image displayed on the liquid crystal display 15 is scrolled in the scroll direction specified in S22 by the scroll distance specified in S22. As a result, the display target area of the map image is changed in a direction away from the guide route, and a map image of a new area outside the periphery of the guide route can be displayed on the liquid crystal display 15. Then, the scroll processing program along the route is terminated.

As described above in detail, in the navigation device 1, the image display method by the navigation device 1, and the computer program executed by the navigation device 1 according to the present embodiment, when the user scroll operation is accepted, the user scroll operation is performed. It is determined whether or not a predetermined number of times are received within a predetermined time (S14), and when it is determined that a user's scroll operation has been received a predetermined number of times within a predetermined time, a map image is displayed while the user's predetermined number of scroll operations are received. It is determined whether or not a guidance route is included in the target area (S18), and when it is determined that a guidance route is included in the display target area of the map image while accepting the user's predetermined number of scroll operations, Scrolling the map image displayed on the liquid crystal display 15 (S19), it is possible to execute the scroll function along the path based on the scroll operation without imposing a special operation on the user. A smooth scrolling operation by the user using the along scroll function is realized. On the other hand, the normal scroll function and the scroll function along the route can be easily switched and executed without being confused by the user.
In addition, when scrolling along the route is being executed and a user's scrolling operation is accepted, the scrolling direction specified by the user's scrolling operation is within a predetermined angle range from the direction orthogonal to the guide route. When the map image is scrolled, the scroll along the route is canceled (S25), so that the scroll along the route can be canceled based on the scroll operation without imposing a special operation on the user. . As a result, the normal scroll function and the scroll function along the route can be easily switched and executed.
Further, the coordinates of the shape complement point for specifying the shape of the link forming the guide route on the map image are acquired (S17), and the coordinates of the shape complement point are included in the display target area of the map image. Since it is determined that the guide route is included in the display target area of the map image, it is possible to accurately determine whether the guide route is included in the display target area of the map image.
In addition, since the user's scroll operation is accepted based on the touch operation on the touch panel 14, the map image can be appropriately scrolled based on the normal scroll function and the scroll function along the route by the operation using the touch panel 14. Become. As a result, the operability regarding the scrolling of the map image can be improved.

Note that the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the scope of the present invention.
For example, in this embodiment, a touch panel is used as an operation unit that receives a user's scroll operation, but other operation units may be used. For example, a mouse, keyboard, button, remote controller, etc. may be used.

  In this embodiment, a drag operation and a flick operation performed in a state where a map image is selected are described as a user scroll operation performed using the touch panel, but other operations may be performed. For example, in the case of performing one-touch scroll processing for scrolling the map image so that the touch coordinates touched by the user are the center, the operation that the user touches the touch panel 14 is the scroll operation. In addition, when the user touches a predetermined area of the touch panel 14 for a predetermined time or longer, when performing a continuous scroll process in which the map image is continuously scrolled at the direction and speed based on the touched area, the user touches the touch panel 14 with the predetermined area. The operation of touching for more than the time is a scroll operation. In the scroll along the route, the scroll start of the map image is started by pressing the scroll start button displayed on the liquid crystal display 15, and the map image is displayed by pressing the scroll stop button displayed on the liquid crystal display 15. You may comprise so that scrolling along a path | route may be stopped.

  In addition to the navigation device, the present invention can be applied to a device that displays a map image. For example, the present invention can be applied to a portable terminal such as a cellular phone, a personal computer, a portable music player, and the like.

1 Navigation device 13 Navigation ECU
14 Touch Panel 15 Liquid Crystal Display 37 Shape Complementary Point 41 CPU
42 RAM
43 ROM
50 Travel Guide Screen 51 Map Image 54 Guide Route

Claims (6)

Map display means for displaying a map image of the display target area on the display device;
A guide route setting means for setting a guide route from the departure point to the destination,
Operation accepting means for accepting a user scroll operation for scrolling the map image displayed on the display device;
Scroll display means for scrolling the map image displayed on the display device in a scroll direction instructed by the user's scroll operation received by the operation accepting means;
When the user's scroll operation is received a predetermined number of times within a predetermined time by the operation receiving means, it is determined whether or not the guide route is included in the display target area while receiving the user's predetermined scroll operation. Operation determining means for
Scrolling the map image displayed on the display device when the operation determining means determines that the guide route is included in the display target area while accepting the user's predetermined number of scroll operations. A map display device, comprising: a scroll along a route that switches to a scroll along a route that scrolls along the guide route.   When the user's scroll operation is received by the operation receiving means while the scroll along the route is being executed by the route scroll executing means, the scroll direction instructed by the user's scroll operation is: 2. A scroll along the route that releases the scroll along the route when the map image is scrolled within a predetermined angle range from a direction orthogonal to the guide route. The map display device described in 1. Coordinate acquisition means for acquiring the coordinates of a shape complement point for specifying the shape of the link forming the guide route on the map image;
The operation determining means determines that the guide route is included in the display target area when the coordinates of the shape complement point are included in the display target area. The map display device according to claim 2. A touch panel that is arranged in a display area of the display device and receives a user's touch operation;
Coordinate acquisition means for acquiring touch coordinates that are coordinates of a point touched by the user when the user touches the touch panel;
The map display device according to claim 1, wherein the operation accepting unit accepts the user's scroll operation based on a touch operation on the touch panel. A map display step for displaying a map image of the display target area on the display device;
A guide route setting step for setting a guide route from the departure point to the destination,
An operation accepting step for accepting a user scroll operation for scrolling the map image displayed on the display device;
A scroll display step of scrolling the map image displayed on the display device in a scroll direction instructed by the user's scroll operation received by the operation reception step;
When the user's scroll operation is received a predetermined number of times within a predetermined time in the operation receiving step, it is determined whether or not the guide route is included in the display target area while the user's predetermined scroll operation is received An operation determination step to perform,
Scrolling the map image displayed on the display device when the operation determining step determines that the guide route is included in the display target area while accepting the user's predetermined number of scroll operations. And a step of scrolling along the route for switching to scrolling along the route for scrolling along the guide route. On the computer,
A map display function for displaying a map image of a display target area on a display device;
A guide route setting function for setting a guide route from the departure point to the destination,
An operation accepting function for accepting a user scrolling operation for scrolling the map image displayed on the display device;
A scroll display function for scrolling the map image displayed on the display device in a scroll direction instructed by the user's scroll operation received by the operation reception function;
When the user's scroll operation is received a predetermined number of times within a predetermined time by the operation reception function, it is determined whether or not the guide route is included in the display target area while the user's predetermined scroll operation is received An operation determination function to
Scrolling the map image displayed on the display device when the operation determination function determines that the guide route is included in the display target area while accepting the user's predetermined number of scroll operations. , Along the route to scroll along the guide route to switch the scroll along the route,
A computer program for causing a processor to execute.

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