JP5162178B2 - Navigation device - Google Patents

Description

  The present invention specifies a current position, displays the current position on a map or a guide route, and notifies a user, and in particular, displays a current position measured by a positioning means that is used in a vehicle and is displayed by matching processing. The present invention relates to a navigation device, and particularly relates to a navigation device in which a current position (own vehicle position) mark displayed on the screen is moved by dragging with a cursor and is easily corrected on a road that is actually running. It is.

  The present invention makes it easy to find the actual location matched to the expressway, especially if it is accidentally passed through the entrance of the expressway where the general road and the expressway are parallel. The present invention relates to a navigation device which can be corrected to a traveling road and re-searched for a route starting from another highway entrance ahead of the traveling direction.

  Conventionally, when driving on a road such as a car, the current position is obtained until the destination is reached, and the current position is displayed on the display screen together with the road map, so that the user can reach the destination without getting lost. A vehicle-mounted navigation device is known.

  A GPS (Global Positioning System) navigation system using an artificial satellite is known for measuring the current position. This is to identify the current position by receiving radio waves from a plurality of artificial satellites orbiting the earth and performing arithmetic processing on the received data.

  The current position specified by the GPS is compared with the map data stored in the map storage means or the like of the navigation device. For example, matching processing is performed on the road closest to the current position, and this position is used as the current position subjected to matching processing. Displayed on the display screen. Thereby, even when there is a slight error in GPS positioning, it is possible to correct the current location on the road and display without a sense of incongruity.

  In addition, as a navigation device, a route search from the departure point specified by the user to the destination is performed, the guide route is displayed on the display screen, and the current position measured is compared with this guide route and the matching process is performed. There is also.

  Various matching processing techniques have been proposed. For example, the following Patent Document 1 (Japanese Patent Laid-Open No. 9-68437) discloses an invention of a navigation device that specifies a correction position with a cursor. The navigation device disclosed in Patent Document 1 can prevent a significant error that occurs when a user sets a position of a vehicle or corrects a measured position.

  This navigation device has a current position correction mode, and when the current position correction mode is set, the error range obtained from the GPS receiver is displayed on the map data, and the user operates the input device to move the cursor. , Correct the position of the vehicle. At this time, the control unit is configured to control so that the correction is permitted if the coordinates indicated by the cursor are within the error range, and the correction is not permitted if the coordinates are outside the error range.

  Further, in the following Patent Document 2 (Japanese Patent Application Laid-Open No. 2006-98231), when the traveling road determined by map matching is different from the actually traveling road, the actual traveling road is simplified. An invention of a navigation device is disclosed in which matching can be corrected quickly and easily by operation.

  The navigation device disclosed in Patent Document 2 monitors whether or not the screen is scrolled by a user, and when it is scrolled, a matching candidate detection unit that detects and blinks the road closest to the cursor at the scroll center coordinates; The forced map matching unit that forcibly performs map matching on the blinking road and the forced map matching are performed if it is determined whether or not the user has performed the cursor determination operation at the cursor position. And a control unit for controlling operations such as map display and screen display in guidance according to the result.

By adopting such a configuration, when the user performs a scroll operation on the map, the matching candidate road blinks, and the correction position can be easily determined by the cursor operation.
JP-A-9-68437 (FIG. 1, paragraphs [0030] to [0032]) JP 2006-98231 A (FIG. 1, paragraph [0028])

  According to the navigation devices disclosed in Patent Document 1 and Patent Document 2 described above, when the road on which the current position (own vehicle position) mark displayed on the display screen is present differs from the road on which the vehicle is actually traveling. The user of the navigation apparatus can easily correct the current position (own vehicle position) mark on the road actually traveling by operating the cursor.

  However, in the navigation device disclosed in Patent Document 1, in order to correct the current position (own vehicle position) mark displayed on the screen, a procedure for setting the navigation device in the correction mode in advance is necessary. There was a problem that the operability was impaired.

  In the navigation device disclosed in Patent Document 2, the cursor is operated to scroll the screen, and the road closest to the cursor position is displayed blinking as a correction candidate, so that the current position displayed on the screen is displayed. When correcting the (own vehicle position) mark, it is necessary to operate the cursor to scroll the screen and move the cursor close to the road where the position is to be corrected, which impairs operability. .

  In general, in a navigation device, when the current position (own vehicle position) mark is corrected to a road that is actually traveling, if the corrected road is a guidance route that is guided by the navigation device, route re-searching is performed. Although it is not necessary, if the corrected road is not a guide route, it is necessary to re-search for the route and re-search the route from the point on the corrected road to the original destination for guidance. Such a route re-search is referred to as a reroute process, and this process is performed even when the vehicle cannot pass through the guided intersection in accordance with the guidance and deviates from the guide route, and a new route is guided.

  By the way, if you correct the current position (your vehicle position) mark on the road you are actually driving and if the corrected road is not a guide route, you can go to another point rather than re-searching the route to the original destination. It may be more convenient for the user to re-search and guide the route. For example, there is a case where a highway is included in the guide route, the interchange or entrance is overlooked, and a general road parallel to the highway is advanced.

  In this case, if the current position (own vehicle position) mark is on the expressway after matching processing is performed on an expressway that is not actually traveling due to the positioning error of the current position, When the correction is made, the route from the corrected position on the general road to the original destination is usually re-searched. However, it is more convenient for the user to guide the route to the next expressway interchange or entrance.

  However, in the navigation devices disclosed in Patent Document 1 and Patent Document 2, there is no consideration for re-searching for a route after the current position (vehicle position) mark is corrected. There was also a problem that it could not cope with the case.

  The invention of the present application has been made in view of the above-mentioned problems, and the present position (own vehicle position) mark displayed on the screen is moved by dragging with a cursor so that it can be easily moved on a road that is actually running. It is a first object to provide a navigation device that can be modified.

  Further, the present invention corrects the current position (own vehicle position) mark on the road that is actually running, and when the corrected road is not a guide route, the route to the original destination is re-searched or progressed. A second object of the present invention is to provide a navigation device capable of re-searching and guiding a route to the next point (branch node) in the direction.

In order to solve the above-mentioned problem, the invention according to claim 1 of the present application includes a current position detecting means for detecting a current position, a route searching means for searching for a guide route from a designated departure place to a destination, and a map image. Display means for displaying, a display control means for displaying a current position mark indicating the detected current position and the guidance route searched on the map image displayed on the display means, an operating means, and the operation Position mark correcting means for correcting the current position by moving the current position mark on a desired road based on an operation via the means, and the current position corrected based on the corrected current position is on the guide route A re-search condition determining unit that determines that a re-search of the guidance route is necessary, and a re-search processing unit that causes the route searching unit to re-search the guide route from the corrected current position to the destination. In the navigation apparatus, the re-search condition determining means corrects the current position on a general road when the current position mark displayed on the display means is on an expressway, and the corrected current position is If it is not on the guide route, it is determined that a re-search for the guide route is necessary, and the re-search processing means determines that the route search means until the next expressway interchange located forward in the traveling direction from the corrected current position. The guide route is re-searched.

  In the invention according to claim 1, the re-search condition determining means corrects the current position on the general road when the current position mark displayed on the display means is on the highway, and the corrected When the current position is not on the guide route, it is determined that a re-search for the guide route is necessary, and the re-search processing means is a next highway located forward in the traveling direction from the corrected current position to the route search means. Re-search the guide route to the interchange.

  According to such a configuration, in a place where an expressway and a general road are close to each other and parallel to each other, if the train accidentally passes the interchange and cannot enter the expressway, the next interchange in the direction of travel The guide route is re-searched. That is, in the situation where the current position mark displayed on the display means is on a highway and the road that is actually running is a general road, The guide route to the interchange is searched again. Therefore, the user can travel on the route that has been guided and can enter the expressway at the interchange, thereby improving convenience.

  Hereinafter, specific examples of the present invention will be described in detail with reference to examples and drawings. However, the embodiments shown below exemplify a navigation device for embodying the technical idea of the present invention, and are not intended to specify the present invention for this navigation device. The present invention is equally applicable to navigation devices of other embodiments included in the scope.

  FIG. 1 is a block diagram of a navigation device according to an embodiment of the present invention. The navigation device 1 is of a type that is not only used for in-vehicle use by being placed on a dashboard of a vehicle such as an automobile, but also can be removed from the vehicle and carried by the user. The navigation device 1 includes a control unit 10, a current position detection unit 11, a map storage unit 12, a route search unit 13, a display control unit 14, a matching control unit 15, an input unit 16, a display unit 17, a re-search condition determination unit 18, Re-search processing means 19 is provided.

  The control means 10 is composed of a processor comprising a CPU, RAM and ROM, and controls the operation of each part of the navigation device 1 according to a control program recorded in the RAM and ROM, and is displayed on the display means 17 described later. It also functions as a position mark correcting means for correcting the current position mark.

  The current position detection means 11 is composed of, for example, a GPS receiver and receives radio waves including time information from a plurality of GPS satellites orbiting the earth and calculates current position information based on the received radio waves. It is.

  Further, the current position detection means 11 may use a distance sensor or an orientation sensor. In this case, the travel distance and travel direction of the vehicle are detected, and the current position is obtained by adding these values to the reference position. This current position detection method, when combined with GPS reception, is effective in tunnels where GPS radio waves cannot be received or in high-rise buildings where errors are likely to occur.

  The map storage means 12 stores road node data including road node data and road link data in which nodes such as intersections and branch points of roads are nodes and links between the nodes are links. The road node data includes road node numbers, position coordinates, the number of connection links, intersection names, and the like. The road link data includes the number of road nodes as starting and ending points, road type, link length (link cost), required time, number of lanes, road width, and the like. Further, data such as bridges, tunnels, railroad crossings, and toll gates are added to the road link data as link attributes. The road type is information including a distinction between an expressway and a toll road and a distinction such as a national road or a prefectural road.

  The map storage means 12 further stores background data including facility data including water system data such as coastline, lake and river shape, administrative boundary data, facility location, shape, and name.

  In addition to the road data and background data, the map storage means 12 may include map image data stored in a vector format in order to display the map image in an easily viewable manner.

  These road data, background data, and map image data are extracted from the map storage means 12 by the display control means 14 when the navigation device 1 is used, and are displayed on the display means 17 in a superimposed manner.

  The route search means 13 refers to the road data stored in the map storage means 12 when the user designates the departure place and the destination via the input means 16 described later, and the optimum route from the departure place to the destination is determined. A route is searched and guide route data is created. The search for the optimum route is performed by various methods such as Dijkstra's method for linking and nodes from the road node corresponding to the current position or the starting point designated by the user to the road node corresponding to the destination designated by the user. Search, accumulate link length (link cost) and required time, etc., provide the route with the shortest total link length or total required time as a guide route, and provide road nodes and links belonging to the route as guide route data Is.

  The display control means 14 displays a predetermined range of road data, background data, map, etc. when displaying the current position on the map, when performing route guidance, and when the user specifies a predetermined position and scale. Select the image data, combine the icon indicating the current position (current position mark: own vehicle position mark), the image showing the trajectory and guidance route of the traveling road, and other images such as various guidance explanations, Data that can be displayed on the display means 17 is created.

  As will be described in detail later, the matching control means 15 displays the current position displayed on the display means 17 on the road when the current position detected by the current position detection means 11 slightly deviates from the traveling road. Thus, the corrected matching position is obtained, and this makes it possible to perform a display without a sense of incongruity to the user.

  The input means 16 is for a user to specify a departure place and a destination, and to input a display screen switching instruction to be described later, and includes a key, a button, a touch panel, and the like.

  The display means 17 is for displaying the display data created by the display control means 14 so that the user can visually recognize it, and is constituted by a liquid crystal display or the like. The display unit 17 may function as an input unit. In this case, selection input is performed when the user touches an icon displayed on the screen.

  The matching control means 15 corrects the current position when the current position detected by the current position detection means 11 is considered to be off the road. For example, when the current position calculated by the current position detecting unit 11 is not on the road, the correction is performed based on the current position information to identify the nearest road or guide route from the current position. This is done by making a perpendicular to those roads or routes and setting the intersection as the current position after matching, that is, the matching position.

  Alternatively, when the matching control unit 15 travels on a road in a predetermined direction, the current position detected immediately before is on the road, and the current position detected this time is When the angle is deviated within the range of the angle, matching is performed by correcting the current position by the amount of the deviated angle difference.

  For example, the matching process corrects a positioning error by a GPS receiver. However, in a place where the road is approaching, the matching is not necessarily performed on the road on which the vehicle is actually traveling (the current position mark is displayed). Is not necessarily).

  Here, correction of the current position in the present invention will be described.

  When the current position mark displayed on the map is not on the road that is actually running, the user drags and drops the displayed current position mark and moves to the current road to move to the current position. To correct.

  Specifically, when the control unit 10 detects that the vicinity of the current position mark on the touch panel is pressed by the user and the user's finger is moved without being separated from the touch panel, the current position is corrected. judge. When it is detected that the user's finger is separated from the touch panel, the current position mark is moved to the separated position. As a result, the current position is corrected. At this time, the operation for the user to press the current position mark can use the touch panel function of the input means 16.

  It is also possible to correct the current position using the cursor key of the input means 16.

  In general, the cursor is displayed at an arbitrary home position on the normal display screen. When operating the cursor to select a display image and moving it to another position, operate the cursor key to select the image (object) displayed at the desired position on the screen, and then operate the Enter key. Then drag and move the cursor to another position on the screen by operating the cursor key.

  It is also possible to configure such that the cursor position is always overlaid on the current position mark and the current position mark can be automatically dragged when the cursor key is operated. Furthermore, in the case of a configuration in which the cursor operation is performed with a pointing device such as a mouse as in a general computer apparatus, a drag operation can be performed using the left and right click buttons provided in the pointing device.

  In addition, even if the current position mark is moved onto a road that is actually running and the current position is corrected, the corrected current position (the road that is actually running) may not be on the guidance route. The re-search condition determining means 18 determines whether or not a re-route search is necessary based on the corrected current position and guide route. At this time, if the corrected current position is not on the guide route, it is determined that re-search is necessary.

  The re-search processing unit 19 normally re-searches the guide route from the corrected current position to the destination when the re-search condition determining unit 18 determines that the re-search of the guide route is necessary. The route search means 13 is re-searched for the guide route.

  Here, the current position corrected by the re-search condition determining means 18 is not on the guide route, the current position mark displayed on the display means 17 is on the expressway, and the corrected current position is on the general road. If it is determined that it is necessary to re-search the guidance route, the re-search processing unit 19 guides the guidance route from the current position corrected by the route searching unit 13 to the interchange of the highway located forward in the traveling direction. To search again.

  The display control means 14 extracts data in a predetermined range centered on the current position detected by the current position detection means 11 from the road data and background data stored in the map storage means 12 and further from the map image data. The image data to be displayed on the display means 17 is generated by superimposing marks and icons indicating the current position and the matching position, a traveling locus, and the like on these images and combining them.

  Further, the display control means 14 displays the guidance route data searched by the route searching means 13 together with images such as various guidance explanations when the user makes a route search request by designating a departure place and a destination. Data that can be displayed on the display means 17 is created by superimposing and synthesizing. In addition, when the user specifies the scale of the display map, control is performed to enlarge and reduce the road data, background data, and map image data to a predetermined magnification.

  Further, when the displayed current position mark is moved onto another road, the display control means 14 displays the current position mark on the destination road. At this time, the current position mark of the movement destination may be highlighted. FIG. 2 is a diagram showing a display example of a map image, and shows an example of a display image showing a state before the current position mark is corrected (FIG. 2A) and a state after the correction (FIG. 2B). ing.

  As shown in FIG. 2A, a position mark 20a indicating the current vehicle position is displayed on the road 21 by the matching process. At this time, the vehicle is not actually traveling on the road 21 and is adjacent. It is assumed that the vehicle is traveling on the road 22. Such a display state is unnatural and uncomfortable for the user, so the user corrects the current position mark 20a on the road 22 that is actually traveling.

  As an example where roads are close to each other, an example in which a highway 31 and a general road 32 are provided in parallel as shown in FIG. It is assumed that the current position mark 20a subjected to matching processing in such a road situation is on the highway 31, and the road on which the vehicle is actually traveling is on the general road 32. As in the case of FIG. 2, when the user drags the current position mark 20a on the highway 31 and moves to the general road 32 and drops it, the current position mark 20b is corrected and the current position can be corrected. it can.

  Here, it is assumed that there are interchanges (highway entrances) between the highway 31 and the general road 32, such as IC3a, IC3b,. The guidance route searched by the route search means 13 is a route including the highway 31, and there is a case where the vehicle has accidentally passed the place where the vehicle enters the highway 31 by the interchange IC 3a. In this case, the re-search condition determining means 18 does not have the corrected current position on the guide route, the current position mark displayed on the display means 17 is on the expressway, and the corrected current position is on the general road. It is determined that it is necessary to re-search the guidance route.

  When the re-search condition determining means 18 determines the above-described conditions and determines that re-search is necessary, the re-search processing means 19 informs the route search means 13 ahead of the traveling direction of the vehicle on the traveling general road 32. A process for re-searching the guide route to a certain next interchange IC 3b is performed. If guidance is provided through such a guide route, even if the route shape of the general road 32 is complicated, the user can return to the expressway 31 that is the original guide route earliest.

  Next, the operation procedure of the navigation device 1 described above will be described in detail with reference to the flowchart shown in FIG.

  The control means 10 detects that the vicinity of the current position mark on the touch panel has been pressed as an operation for correcting the current position by the user in the process of step S101, and then the finger is released from the touch panel in the process of step S102. It is determined whether or not there has been a drag.

  If it is determined that it has not been dragged (No in step S102), the process proceeds to step S109.

  In the process of step S109, the re-search condition determining means 18 determines whether or not the current position mark is on the guidance route. If the current position mark is on the guide route (YES in step S109), there is no need to re-search the guide route, and the process is terminated without doing anything. If the current position mark is not on the guidance route (No in step S109), it is necessary to re-search the guidance route, and the re-search processing means 19 proceeds to the processing in step S110, and the route search means 13 determines from the current position to the destination. The guide route to is searched. This re-searching is a general process when an off-route occurs.

  On the other hand, if it is determined in step S102 that it has been dragged (YES in step S102), it is detected whether or not the finger is separated from the touch panel in the process of step S103. When it is detected that the finger is separated from the touch panel (YES in step S103), in step S104, the current position mark is map-matched on the road closest to the position where the finger is separated, and the display control means 14 The current position mark is displayed so that the map-matched position becomes the current position.

  Next, the re-search condition determining means 18 determines whether or not the road whose current position mark is corrected in the process of step S105 is a guide route. If it is a guide route (YES in step S105), there is no need to re-search the guide route, and the process is terminated. If it is not on the guide route (No in step S105), the process proceeds to step S106, and it is determined whether or not the guide route includes an expressway and whether or not the current position before correction is an expressway. If the expressway is a guide route and the current position before correction is not on the expressway, the process proceeds to step S110, and a guide route re-search process is performed. The re-search in step S110 is a re-search of the guide route to the original destination.

  If the guidance route includes an expressway (YES in step S106), the process proceeds to step S107, and it is determined whether or not the road whose current position mark is corrected (moved) is a general road. If it is not a general road (No in step S107), the process proceeds to step S110. If the road whose current position mark has been corrected (moved) is a general road (YES in step S107), the process proceeds to step S108, and the re-search processing means 19 A process for re-searching the guide route from the current position to the interchange is performed with the interchange of the next expressway in the traveling direction as the destination (see FIG. 3).

  As described above in detail, according to the navigation device of the present invention, the current position (own vehicle position) mark displayed on the screen is dragged and moved, so that it can be easily placed on the road that is actually running. If the corrected road is not a guide route, the route to the original destination can be re-searched or the route to the next point (branch node) in the traveling direction can be re-searched for guidance. Will be able to.

The block diagram of the navigation apparatus concerning the Example of this invention is shown. It is a figure which shows the example of a display of a map image, Fig.2 (a) is a state before correction of a present position mark, FIG.2 (b) is a figure which shows the state after correction. It is a figure which shows the example of the road where the highway and the general road are provided in parallel. It is a flowchart which shows the operation | movement procedure of the navigation apparatus concerning the Example of this invention.

Explanation of symbols

1: navigation device 10: control means 11: current position detection means 12: map storage means 13: route search means 14: display control means 15: matching control means 16: input means 17: display means 18: re-search condition determination means 19 : Re-search processing means 20a, 20b: Current position mark

Claims (1)

Current position detection means for detecting the current position, route search means for searching for a guide route from the designated departure place to the destination, display means for displaying a map image, and a map image displayed on the display means display control means for displaying a current position mark indicating the searched the guidance route and said detected current position, the operation means, based on the operation through the the manipulation means, the current position mark desired road Position mark correcting means for moving up and correcting the current position, and a re-search condition for determining that a re-search of the guide route is necessary when the current position corrected based on the corrected current position is not on the guide route In a navigation apparatus comprising: a determination unit; and a re-search processing unit that causes the route search unit to re-search for a guide route from the corrected current position to the destination .
The re-search condition determining means corrects the current position on the general road when the current position mark displayed on the display means is on the highway, and the corrected current position is not on the guide route. In this case, it is determined that it is necessary to re-search for the guidance route, and the re-search processing unit re-establishes the guidance route from the corrected current position to the next expressway interchange located forward in the traveling direction. A navigation device characterized by causing a search .

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