JP2008249652A - Navigation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation device allowing a user to rapidly correct a route. <P>SOLUTION: In cases where a requiring instruction that requires manual input correction of a recommended route is input via a touch panel 18 or an operation part 14 within a prescribed time period (within about 10 seconds to 30 seconds, for example) of displaying the recommended route on a liquid crystal display 15 (S13: YES), a CPU 41 extracts a familiarity link traveled a prescribed number of times or more in the past and existing within a prescribed distance (a distance not more than about 1 km, for example) of the recommended route, based on a travel history data table 51. In cases where there is a familiarity link within a prescribed distance (a distance not more than about 1 km, for example) of the recommended route, a zone in a prescribed area (a zone of a radius about 3 km or less centering on the familiarity link, for example) centering on the familiarity link is identifiably displayed on a road map of the crystal display 15 as a familiarity zone (S14: YES to S15). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a navigation device capable of correcting a recommended route.

Conventionally, various navigation devices capable of correcting a recommended route have been proposed.
For example, a data storage unit is provided that stores, as hand-drawn history data, a route that has been route-guided by a route previously designated by tracing the road map displayed on the liquid crystal display by the user. . Then, the user selects arbitrary hand-drawn history data, displays the route on the liquid crystal display, traces a part of the route, erases it, and then traces the road again to specify the route again. Thereafter, there is a navigation device configured to guide the corrected route as a recommended route (see, for example, Patent Document 1).
JP 2006-322781 A (paragraphs (0006) to (0036), FIGS. 1 to 10)

  However, in the navigation device described in Patent Document 1 described above, when a route is corrected, it is necessary for the user to check the route displayed on the map and search for a location to be corrected. There is a problem that it takes time to correct the.

  Therefore, the present invention has been made to solve the above-described problems, and provides a navigation device that allows a user to easily determine an area to be corrected and to quickly correct a route. For the purpose.

  In order to achieve the object, the navigation device according to claim 1 includes a map information storage unit (25) for storing map information, a destination input unit (14) for inputting a destination, and a current vehicle position. Route search means (13) for searching a recommended route to the destination based on the map information, and display means (13) for reading out the map information stored in the map information storage means and displaying it as a road map together with the recommended route (13). 15), a travel history storage means (27) for storing the travel history of the host vehicle, a correction instruction input means (18) for inputting a correction instruction for instructing correction of the recommended route, and the correction instruction. A determination means (13) for determining whether or not there is a familiar link that has traveled a predetermined number of times in the past based on the travel history of the host vehicle, and the periphery of the recommended route. When it is determined that there is the familiar link, familiar area setting means (13) for setting a predetermined area including the familiar link as a familiar area, and the familiar area set by the familiar area setting means And a display control means (13) for controlling the display so as to be identifiable on the road map displayed on the display means.

  Further, the navigation device according to claim 2 is provided with designation means (18) for designating the familiar area in the navigation device (1) according to claim 1, wherein the display control means (13) is the designation means. When the savvy area is designated via the control area, control is performed so that the range including the designated savvy area is enlarged and displayed.

In the navigation device according to claim 1 having the above-described configuration, when the user inputs a correction instruction for instructing correction of the recommended route displayed via the correction instruction input unit, the navigation device has previously been around the recommended route. If there is a savvy link that has traveled a predetermined number of times or more, a predetermined area including the savvy link is displayed so as to be identified as a savvy region.
Therefore, if there is a familiar link that has traveled a predetermined number of times in the past around the route, a predetermined area including the familiar link is displayed so as to be identified as a familiar area. As a result, the user can quickly determine the area to be corrected based on the displayed familiar area, and can efficiently correct the route.

  In the navigation device according to claim 2, when the user designates a familiar area via the specifying means, the range including the designated familiar area is displayed in an enlarged manner. Thus, it becomes possible to quickly identify the correction route.

  Hereinafter, a navigation device according to an embodiment of the present invention will be described in detail with reference to the drawings.

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

  Hereinafter, each component constituting the navigation device 1 will be described. The current position detection processing unit 11 includes a GPS 31, a direction sensor 32, a distance sensor 33, an altimeter (not shown), and the like. It is possible to detect a direction, a distance to a target (for example, an intersection), and the like.

  Specifically, the GPS 31 detects the current location and current time of the vehicle on the earth by receiving radio waves generated by artificial satellites. The azimuth sensor 32 includes a geomagnetic sensor, a gyro sensor, an optical rotation sensor attached to a rotating portion of a steering wheel (not shown), a rotation resistance sensor, an angle sensor attached to a wheel, or the like. Detect the direction of the vehicle. The distance sensor 33 measures, for example, the rotational speed of a wheel (not shown) of the host vehicle, detects the distance based on the measured rotational speed, measures the acceleration, and integrates the measured acceleration twice. Thus, it is composed of a sensor or the like for detecting the distance, and detects the moving distance of the own vehicle.

  The data recording unit 12 includes an external storage device and a hard disk (not shown) as a recording medium, a map information database (map information DB) 25, a travel history database (traffic DB) 27 stored in the hard disk, and a predetermined memory. A recording head (not shown), which is a driver for reading programs and the like and writing predetermined data to the hard disk, is provided.

The map information DB 25 stores navigation map information 26 used for travel guidance and route search of the navigation device 1. Here, the navigation map information 26 includes various information necessary for route guidance and map display. For example, new road information for identifying each new road, map display data for displaying a map, Intersection data related to each intersection, node data related to node points, link data related to roads (links) as a type of facility, search data for searching for routes, stores related to POI (Point of Interest) such as stores as a type of facility It is composed of data, search data for searching points, and the like. Further, as store data, data on POIs such as hotels, hospitals, gas stations, parking lots, stations, airports, ferry landings, etc. in each region are stored together with IDs for identifying POIs.
The contents of the map information DB 25 are updated by downloading update information distributed from the map information distribution center (not shown) via the communication device 17.

  Here, the map display data is divided into 4 divisions (length 1/2), 16 divisions (1/4), and 64 divisions (1/8) based on a secondary mesh partitioned by about 10 km × 10 km. Each unit is set so that the data amount of each unit is approximately the same level. The smallest 64 division size unit is about 1.25 km square. Each secondary mesh (hereinafter referred to as “mesh”) partitioned by about 10 km × 10 km is assigned a mesh ID for identifying each mesh.

  The travel history DB 27 stores a travel history data table 51 (see FIG. 2) that stores information related to past travel histories such as a starting point and a destination related to routes traveled in the past.

  As shown in FIG. 1, the navigation control unit 13 constituting the navigation device 1 is a working device that controls the entire navigation device 1, the CPU 41 as the control device, and the CPU 41 performs various types of arithmetic processing. In addition to the RAM 42, which is used as a memory and stores route data when a route is searched, a control program, a route correction processing program for correcting a recommended route to a destination described later (see FIG. 3) ) And the like, an internal storage device such as a flash memory 44 for storing a program read from the ROM 43, a timer 45 for measuring time, and the like.

  Furthermore, the navigation control unit 13 is electrically connected to peripheral devices (actuators) of the operation unit 14, the liquid crystal display 15, the speaker 16, the communication device 17, and the touch panel 18.

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

  In addition, the liquid crystal display 15 includes map information, operation guidance, operation menu, key guidance, recommended route from the current location to the destination, guidance information along the recommended route, traffic information, news, weather forecast, Time, mail, TV program, etc. are displayed.

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

  The communication device 17 is a communication means such as a mobile phone network that communicates with the map information distribution center, and transmits / receives the latest version of updated map information and the like to / from the map information distribution center. Further, in addition to the map information distribution center, the communication device 17 receives traffic information composed of information such as traffic congestion information transmitted from the road traffic information center and the like and congestion status of the service area.

  The touch panel 18 is a transparent panel-like touch switch mounted on the surface portion of the liquid crystal display 15, and inputs various instruction commands by pressing buttons or a map displayed on the screen of the liquid crystal display 15. It is configured to be possible.

  Here, the travel history data table 51 storing the past travel history stored in the travel history DB 27 will be described with reference to FIG. FIG. 2 is a diagram illustrating an example of the travel history data table 51 stored in the travel history DB 27.

  As illustrated in FIG. 2, the travel history data table 51 in which past travel histories are stored includes “date and time”, “departure point → destination”, and “link string data”. In this “date and time”, the date of travel and the travel start time are stored. Further, “departure point → destination” is a pair of coordinate positions (for example, latitude and longitude) of each start point and destination from the start point (start point) to the end point (destination) of the travel route. ) Is stored. Further, the “link string data” sequentially stores the link IDs of the respective links from the start point to the end point of the travel route traveled from the departure point to the destination.

[Route correction processing]
Next, route correction processing that is executed by the CPU 41 of the navigation device 1 configured as described above and corrects the recommended route to the destination will be described with reference to FIGS.
FIG. 3 is a flowchart showing a “route correction process” which is a process executed by the CPU 41 of the navigation device 1 according to the present embodiment and corrects the recommended route to the destination. FIG. 4 is a diagram showing an example in which the CPU 41 displays the recommended route on the liquid crystal display 15. FIG. 5 is a diagram showing an example in which the CPU 41 displays the familiar area around the recommended route on the liquid crystal display 15. FIG. 6 is a diagram for explaining correction of a recommended route.

  3 is stored in the ROM 43 provided in the navigation control unit 13 of the navigation device 1, and is executed by the CPU 41 at predetermined time intervals (for example, approximately every 10 milliseconds to 100 milliseconds). Yes.)

As shown in FIG. 3, first, in step (hereinafter abbreviated as S) 11, the CPU 41 determines whether or not a destination has been set by an input operation of the operation unit 14 such as an operation switch. Execute.
And when the destination is not set (S11: NO), CPU41 complete | finishes the said process.

  On the other hand, when the destination is set (S11: YES), the CPU 41 temporarily stores the coordinates of the destination in the RAM 42, and then proceeds to the processing of S12. In S <b> 12, the CPU 41 detects the current position of the own vehicle (hereinafter referred to as “own vehicle position”) based on the detection result of the current position detection processing unit 11 and stores it in the RAM 42. Then, the CPU 41 performs a route search from the vehicle position to the destination stored in the RAM 42 based on the navigation map information 26 of the data recording unit 12, for example, by the Dijkstra method. Then, the CPU 41 stores the route searched from the vehicle position to the destination as a recommended route in the RAM 42 and displays the recommended route on the liquid crystal display 15.

  For example, as shown in FIG. 4, the CPU 41 displays a recommended route 61 on the road map displayed on the liquid crystal display 15, and also displays a starting point 62 and a destination 63 that are the vehicle positions. Further, the CPU 41 displays “recommended route” at the top of the screen to notify that the recommended route 61 is displayed. Further, the CPU 41 displays a detail button 65, a route correction button 66, a route confirmation button 67, a 5 route button 68, and a wide area button 69 at the bottom of the screen.

  When the detail button 65 is pressed, the road map displayed on the screen is enlarged and displayed. When the route correction button 66 is pressed, a manual input correction request instruction for the recommended route 61 can be input. When the route confirmation button 67 is pressed, the recommended route 61 is registered as a guidance route, and route guidance is started. When the 5 route button 68 is pressed, a maximum of 5 routes from the departure point 62 to the destination 63 are displayed. When the wide area button 69 is pressed, the road map displayed on the screen is reduced and a wide area road map is displayed.

  Subsequently, in S13, the CPU 41 issues a request instruction for requesting manual input correction of the recommended route within a predetermined time (for example, within about 10 seconds to 30 seconds) after the recommended route is displayed on the liquid crystal display 15. A determination process is performed to determine whether or not the input is performed via the touch panel 18 or the operation unit 14. For example, the CPU 41 determines whether or not the route correction button 66 shown in FIG. 4 is pressed within a predetermined time (for example, within about 10 to 30 seconds) after the recommended route 61 is displayed on the liquid crystal display 15. A determination process is performed to determine whether or not.

  Then, when a request instruction for requesting manual input correction of the recommended route is not input within a predetermined time (for example, within about 10 to 30 seconds) after the recommended route is displayed on the liquid crystal display 15. (S13: NO), the CPU 41 proceeds to the process of S20. For example, the CPU 41 does not press the route correction button 66 shown in FIG. 4 within a predetermined time (for example, within about 10 to 30 seconds) after displaying the recommended route 61 on the liquid crystal display 15. In the case (S13: NO), the CPU 41 proceeds to the process of S20.

  On the other hand, when a request instruction for requesting manual input correction of the recommended route is input within a predetermined time (for example, within about 10 seconds to 30 seconds) after the recommended route is displayed on the liquid crystal display 15. (S13: YES), the CPU 41 proceeds to the process of S14. In S14, the CPU 41 executes a determination process for determining whether or not there is a familiar area around the recommended route.

  Specifically, first, the CPU 41 starts from the link ID of each link stored in the “link row data” of the travel history data table 51 stored in the travel history DB 27, that is, from the periphery of the recommended route, that is, from the recommended route. Link IDs of links within a predetermined distance (for example, a distance within about 1 km) are sequentially extracted. When the same link ID is extracted a predetermined number of times or more (for example, three times or more), the CPU 41 selects a link corresponding to the link ID in the past a predetermined number of times or more (for example, three times or more). .) Sequentially stored in the RAM 42 as a “savvy link” familiar with running. Thereafter, the CPU 41 determines whether or not a “savvy link” is stored in the RAM 42. When the “savvy link” is stored in the RAM 42, the CPU 41 determines that there is a familiar area around the recommended route. On the other hand, if the “savvy link” is not stored in the RAM 42, the CPU 41 determines that there is no familiar area around the recommended route.

  When there is no familiar area around the recommended route, that is, when there is no “familiar link” around the recommended route (S14: NO), the CPU 41 proceeds to S16.

  On the other hand, when there is a familiar area around the recommended route, that is, when there is a “familiar link” around the recommended route (S14: YES), the CPU 41 proceeds to the process of S15. In S <b> 15, the CPU 41 reads the “savvy link” from the RAM 42, and selects a region within a predetermined range centered on this “savvy link” (for example, a region within a radius of about 3 km centered on the familiar link). The familiar route of the recommended route is stored in the RAM 42. Further, the CPU 41 reads the familiar area stored in the RAM 42 again, and displays the familiar area on the road map of the liquid crystal display 15 so as to be identifiable. When a plurality of familiar areas overlap, the CPU 41 combines the overlapping plural familiar areas and stores them in the RAM 42 as one familiar area.

  For example, as shown in FIG. 5, when there are familiar areas 75 and 76 around the recommended route 61, the user selects a route correction button 66 displayed at the bottom of the screen after the recommended route 61 is displayed. When pressed with the finger 71 within the time (for example, within about 10 seconds to 30 seconds) (S13: YES), the CPU 41 displays each familiar area 75 on the road map displayed on the liquid crystal display 15. , 76 are displayed in an identifiable manner (S15). Further, the CPU 41 displays “Please select a region to be corrected” at the top of the screen.

Subsequently, in S16, the CPU 41 determines whether or not a “manual input correction area” for correcting the recommended route by manual input is selected, that is, within a predetermined time (for example, within about 10 seconds to 30 seconds). A determination process for determining whether or not a signal that is pressed on the road map displayed on the screen via the touch panel 18 is input is executed.
If a signal that is pressed on the road map displayed on the screen via the touch panel 18 is not input within a predetermined time (for example, within about 10 to 30 seconds) (S16: NO) ), The CPU 41 proceeds to the process of S20.

  On the other hand, when a signal indicating that the road map displayed on the screen is pressed is input via the touch panel 18 within a predetermined time (for example, within about 10 seconds to 30 seconds) (S16: YES). The CPU 41 performs manual input by enlarging a road map of a predetermined range (for example, about 5 km square with the pressed coordinate position on the screen as a center) with a predetermined scale around the pressed coordinate position on the screen. After displaying the correction screen, the process proceeds to S17.

  For example, as shown in the upper part of FIG. 6, when the user presses the recommended route 61 in the familiar area 75 displayed on the liquid crystal display 15 with the finger 71 in FIG. 5, the CPU 41 is pressed. A manual input correction screen 78 in which a road map within a predetermined range (for example, about 5 km square) with the coordinate position as the center is enlarged at a predetermined scale is displayed. In this case, the manual input correction screen 78 may be displayed on a scale including all the familiar areas 75. In addition, the CPU 41 displays the recommended route 61 in the manual input correction screen 78 so as to be identifiable by a broken line, and displays the familiar link 75A that the user has traveled a predetermined number of times in the past so as to be identifiable by a wavy line. In addition, the CPU 41 displays an overall reduced display screen 81 showing the currently enlarged area and all the recommended routes 61 on the upper left of the screen. The CPU 41 displays a detail button 82, a confirmation button 83, a return to all routes button 84, and a wide area button 85 at the bottom of the screen, and a redo button 86 at the upper right of the screen.

  When the detail button 82 is pressed, the road map displayed on the screen is further enlarged. When the confirm button 83 is pressed, a route obtained by correcting the recommended route displayed on the screen is registered as a guide route, and route guidance is started. When the return button 84 for all routes is pressed, the display state of FIG. 4 is restored. When the wide area button 85 is pressed, the road map displayed on the screen is reduced and a wide area road map is displayed. When the redo button 86 is pressed, the input path displayed along the trace traced on the touch panel 18 is deleted.

  Subsequently, in S17, the CPU 41 displays an instruction signal for changing the scale of the manual input correction screen displayed on the screen within a predetermined time (for example, about 10 to 30 seconds) after the manual input correction screen is displayed. The determination processing for determining whether or not the input is made via the touch panel 18 is executed. For example, a signal indicating that the detail button 82 or the wide area button 85 on the manual input correction screen 78 shown in FIG. 6 is displayed within a predetermined time (for example, within about 10 to 30 seconds) after the manual input correction screen 78 is displayed. A determination process for determining whether or not the input is made via the touch panel 18.

  Then, the instruction signal for changing the scale of the manual input correction screen displayed on the screen displays the touch panel within a predetermined time (for example, within about 10 to 30 seconds) after the manual input correction screen is displayed. If it is not input via 18 (S17: NO), the CPU 41 proceeds to the process of S18. In S18, the CPU 41 displays the scale of the manual input correction screen as it is, and displays the road corresponding to the locus on the road map displayed on the screen according to the locus traced on the touch panel 18 by the “input route”. "To be identifiable.

  For example, as shown in the upper part of FIG. 6, a signal indicating that the detail button 82 or the wide area button 85 on the manual input correction screen 78 is pressed is displayed within a predetermined time (for example, about 10 seconds) after the manual input correction screen 78 is displayed. If no input is made via the touch panel 18 (S17: NO), the CPU 41 displays the scale of the manual input correction screen 78 as it is. Then, the CPU 41 displays the input route 91 with a thick blue line or the like on the road corresponding to the locus on the manual input correction screen 78 according to the locus traced on the manual input correction screen 78 by the finger 71 ( S18).

  On the other hand, the instruction signal for changing the scale of the manual input correction screen displayed on the screen is within a predetermined time (for example, within about 10 to 30 seconds) after the manual input correction screen is displayed. If it is input via 18 (S17: YES), the CPU 41 proceeds to the process of S19. In S <b> 19, the CPU 41 changes the scale of the manual input correction screen according to the instruction signal for changing the scale of the manual input correction screen input via the touch panel 18, displays the road map, and the user traces on the touch panel 18. According to the trajectory, the road corresponding to this trajectory on the road map displayed on the screen is displayed as an “input route” so as to be identifiable.

  For example, in the upper part of FIG. 6, a signal indicating that the detail button 82 or the wide area button 85 on the manual input correction screen 78 is pressed is displayed within a predetermined time (for example, about 10 to 30 seconds) after the manual input correction screen 78 is displayed. Is input via the touch panel 18 (S17: YES), the CPU 41 changes the scale of the manual input correction screen 78 in accordance with the signal input via the touch panel 18 and road map. Is displayed. Then, the CPU 41 displays the input route 91 with a thick blue line or the like on the road corresponding to the locus on the manual input correction screen 78 according to the locus traced on the manual input correction screen 78 by the finger 71 ( S19).

  Subsequently, in S20, the CPU 41 instructs to correct the recommended route according to the “input route” input in S18 or S19 within a predetermined time (for example, within about 10 seconds to 30 seconds). A determination process for determining whether a route determination instruction is input via the touch panel 18 or the operation unit 14 is executed.

  If a route determination instruction is not input via the touch panel 18 or the operation unit 14 within a predetermined time (for example, within about 10 seconds to 30 seconds) (S20: NO), the CPU 41 After deleting the “input route” input in S18 or S19 displayed on the screen, all routes of the recommended route are displayed again on the liquid crystal display 15, and the processing from S13 onward is executed again.

  For example, in the upper part of FIG. 6, when the confirmation button 83 is not pressed within a predetermined time (for example, within about 10 to 30 seconds) after the user's finger 71 leaves the manual input correction screen 78. (S20: NO), the CPU 41 returns to the display state of FIG. 4 again, and executes the processes after S13 again. When the user presses the return button 84 for all routes (S20), the CPU 41 returns to the display state of FIG. 4 again and executes the processes after S13 again.

On the other hand, when a route determination instruction is input via the touch panel 18 or the operation unit 14 within a predetermined time (for example, within about 10 seconds to 30 seconds) (S20: YES), the CPU 41 The end points of the “input route” input in S18 or S19 displayed in the above are connected to the recommended route, the recommended route between the end points is deleted, and the recommended route passes through the “input route”. Then, the process is terminated after being stored in the RAM 42 as a guidance route for performing route guidance.
Thus, the user can travel so as to pass the desired input route according to the guidance route guidance.

  For example, as shown in the lower part of FIG. 6, it is within a predetermined time (for example, within about 10 seconds to 30 seconds) after the user inputs the input path 91 and the user's finger 71 leaves the manual input correction screen 78. ), When the confirm button 83 is pressed (S20: YES), the CPU 41 connects the end points of the input path 91 to the recommended path 61 and deletes the recommended path 61 between the end points, The recommended route 61 is corrected so as to pass through the input route 91 and is stored in the RAM 42 as a guide route 93 for performing route guidance.

[Effect of the above embodiment]
As described in detail above, in the navigation device 1 according to the present embodiment, the CPU 41 displays the recommended route on the liquid crystal display 15 within a predetermined time (for example, within about 10 seconds to 30 seconds). When a request instruction for requesting manual input correction of the recommended route is input via the touch panel 18 or the operation unit 14 (S13: YES), within a predetermined distance from the recommended route based on the travel history data table 51. A familiar link that has traveled a predetermined number of times in the past (for example, a distance within about 1 km) is extracted. If there is a familiar link that has traveled more than a predetermined number of times in the past within a predetermined distance (for example, a distance within about 1 km) from this recommended route, an area within a predetermined range centered on this familiar link ( For example, an area within a radius of about 3 km centered on the familiar link is displayed as a familiar area on the road map of the liquid crystal display 15 so as to be identifiable (S14: YES to S15).

  Therefore, if there is a familiar link that has traveled a predetermined number of times in the past around the route, an area within a predetermined range including the familiar link is displayed so as to be identified as a familiar area. As a result, the user can quickly determine the area to be corrected based on the displayed familiar area, and can efficiently correct the route.

  In addition, when the CPU 41 displays a familiar area and then receives a signal that is pressed on the road map displayed on the screen via the touch panel 18 (S16: YES), the CPU 41 is pressed on the screen. A manual input correction screen in which a road map of a predetermined range (for example, about 5 km square with the coordinate position pressed on the screen as a center) is enlarged at a predetermined scale is displayed. Then, according to the trace traced on the touch panel 18 by the user, the road corresponding to the trace on the road map displayed on the screen is displayed as an “input route” so as to be identifiable (S17 to S18).

  Thereby, when the user presses on the recommended route of the familiar area displayed on the screen via the touch panel 18, a predetermined range including the familiar area centering on the coordinate position on the designated recommended route (for example, A manual input correction screen in which the coordinate position on the recommended route where the screen is pressed is about 5 km square is displayed. Therefore, the user can quickly correct the recommended route by tracing the touch panel 18 while accurately grasping the road on which the user has traveled before.

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

  (A) In the above step 20, when the travel is started in a state where the route determination instruction is not input via the touch panel 18 or the operation unit 14, the CPU 41 receives the “input” input in the above S18 or S19. It is determined that the user is instructed to correct the recommended route according to the “route”. Then, the CPU 41 connects both end points of the “input route” to the recommended route, deletes the recommended route between the end points, corrects the recommended route to pass through the “input route”, and provides route guidance. You may make it memorize | store in RAM42 as a guidance path | route which performs.

  (B) In step 14, when there is no familiar area around the recommended route, that is, when there is no “familiar link” around the recommended route (S14: NO), the CPU 41 performs the process of step 20 You may make it transfer to. As a result, the user can correct the recommended route only when there is a familiar area around the recommended route, and the correction of the recommended route in the unguided area can be prevented automatically.

  (C) In step 12 above, only when there is a familiar area around the recommended route, a correction instruction for the recommended route can be input via the touch panel 18 or the operation unit 14 and “recommended” is displayed on the display screen. “Do you want to correct the route?” May be displayed. As a result, the user can correct the recommended route only when there is a familiar area around the recommended route, and the correction of the recommended route in the unguided area can be prevented automatically.

  (D) Further, in step 20, for example, when the redo button 86 shown in FIG. 6 is pressed, the CPU 41 may return to the display state shown in FIG. You may do it.

It is the block diagram which showed the navigation apparatus which concerns on a present Example. It is a figure which shows an example of the driving history data table stored in driving history DB. It is a flowchart which shows the "route correction process" which corrects the recommended route to the destination which is a process which CPU of a navigation apparatus performs. It is a figure which shows an example which CPU displayed the recommendation path | route on the liquid crystal display. It is a figure which shows an example which CPU displayed the familiar area around the recommended route on the liquid crystal display. It is a figure for demonstrating correction of a recommendation path | route.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 11 Present location detection process part 12 Data recording part 13 Navigation control part 14 Operation part 15 Liquid crystal display 18 Touch panel 25 Map information DB
27 Travel history DB
41 CPU
42 RAM
43 ROM
51 Travel History Data Table 61 Recommended Route 75, 76 Familiarity Area 75A Familiar Link 91 Input Route 93 Guide Route

Claims (2)

Map information storage means for storing map information;
A destination input means for inputting a destination;
Route search means for searching a recommended route from the current vehicle position to the destination based on the map information;
Display means for reading the map information stored in the map information storage means and displaying it as a road map together with the recommended route;
Traveling history storage means for storing the traveling history of the vehicle;
Correction instruction input means for inputting a correction instruction for instructing correction of the recommended route;
When the correction instruction is input, a determination unit that determines whether there is a familiar link that has traveled a predetermined number of times in the past around the recommended route based on the travel history of the host vehicle;
When it is determined that there is the familiar link around the recommended route, familiar area setting means for setting an area of a predetermined range including the familiar link as a familiar area;
Display control means for controlling the familiar area set by the familiar area setting means so as to be identifiable on the road map displayed on the display means;
A navigation device characterized by comprising: A designation means for designating the familiar area;
2. The display control unit according to claim 1, wherein when the familiar area is designated through the designation unit, the display control unit performs control so as to enlarge and display a range including the designated familiar area. Navigation device.

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