JP4785636B2 - Navigation device - Google Patents

Description

  The present invention relates to a navigation device mounted on a vehicle or the like, and more particularly to a technique for displaying road traffic information such as traffic jams and regulations on a road map.

  The navigation device detects the vehicle position, draws map data around the vehicle position on the display, and displays the vehicle mark on the map. When the position of the vehicle changes, the map is scrolled to guide the road map, and the optimum route to the destination is searched, and the route to the destination is guided by the searched route.

  A road traffic information system (VICS) that provides road traffic information such as traffic jams and road regulations in real time via FM multiplex broadcasting, radio wave beacons or optical beacons has been put into practical use. Is displayed on the road map of the display to inform the user of the traffic jam section and the level of traffic jam. The road traffic information provided by VICS includes a level 1 character display type that displays characters, a level 2 simple graphic display type that displays simple graphics, and a level 3 map display type that displays traffic congestion points on map images using arrows and the like. There is.

  In fact, when a highway and a general road are running side by side, or when a highway and a general road are overlapped due to an elevated type, if this is displayed on a display as a two-dimensional road map, It becomes difficult to distinguish from ordinary roads. If a traffic congestion mark is drawn on the road in the level 3 map display type, it becomes difficult to distinguish whether the traffic congestion mark is for a highway or a general road.

  In view of such a problem, Patent Document 1 determines the level of a target road, and draws traffic information marks that can be distinguished from each other even when the road display overlaps based on the level. Specifically, the traffic information marks when the roads overlap are displayed so that they can be distinguished from each other by shifting the display position and changing the color and density.

JP-A-10-227648

  As shown in Patent Document 1, improvements have been made to identify traffic jam information marks when road displays overlap vertically, but for which roads traffic traffic information such as traffic jams still corresponds to which road There is a problem that it is difficult to understand.

  The present invention has been made in order to solve the above-described conventional problems, and an in-vehicle electronic device, a display method, and a display program capable of easily displaying road traffic information even when roads overlap due to an elevated type or the like. The purpose is to provide.

  An in-vehicle electronic device having a navigation function for guiding a route to a destination according to the present invention includes a display capable of displaying a road map, an acquisition means for acquiring road traffic information, and the acquired road traffic information. Display means for displaying on the road map of the display, and the display means, when the target road of road traffic information is within a certain display range from the other road, the target road and the other road Is displayed in a vertical direction, and a side view in which at least road traffic information is given to the target road is displayed on a display together with a road map.

  Preferably, when the road traffic information is acquired, the display means displays the side view in response to the road traffic information. The display means displays identification information for identifying an area corresponding to the display area by the side view on the road map. Thereby, the user can know the relation of which area the currently displayed side view is.

  Further, the in-vehicle electronic device includes user input means, and when the road traffic information displayed on the road map is selected by the user input means, the display means displays a side view. A side view can be displayed for road traffic information arbitrarily selected by the user.

  Preferably, when the road traffic information is displayed on the road map, the display means identifies and displays the road traffic information associated with the side view from other road traffic information. Thereby, the user can easily select information related to the side view from the road traffic information displayed on the road map.

  The in-vehicle electronic device further includes a search unit that searches for a route to the destination, and the display unit displays a side view when the target road is included in the search route to the destination. Also good. Furthermore, a selection means for selecting either the target road or other road displayed by the side view is included, and when the target road or another road is selected by the selection means, the search means The route may be searched again. In this case, the selection unit may be executed by a selection screen displayed in the side view.

  A method or program for displaying road traffic information on a display in a navigation device includes a step of acquiring road traffic information, and if the road targeted for road traffic information is within a certain display range from other roads, And displaying a side view in which the positional relationship between the other road and other roads is represented in the vertical direction and at least road traffic information is given to the target road together with a road map.

  According to the present invention, when the target road of the road traffic information is within a certain display range from the other road, the positional relationship between the target road and the other road is expressed in the vertical direction, and the target road The side view with at least road traffic information is displayed on the display together with the road map. Therefore, even if multiple elevated or parallel roads are displayed, which road the road traffic information belongs to Can be easily grasped.

  The best mode for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of an in-vehicle navigation device according to the present invention. The navigation device 1 receives a radio wave from a GPS satellite and measures the current position and current direction of the vehicle, a self-contained navigation sensor 12 including a vehicle speed sensor and a gyro sensor, an antenna 14 and the like. VICS / FM multiplex receiver 16 for receiving road traffic information such as accidents and traffic jams, touch panel 22, user input interface 20 including voice input unit 24 and remote control operation unit 26, storage device 30 having a large-capacity hard disk, wireless or wired The data communication control unit 32 that enables data communication, the audio output unit 40 that outputs audio from the speaker 42, the display control unit 50 that displays an image on the display 52, the program memory 60 that stores programs, and the data that is temporarily stored By in-vehicle communication such as data memory 70 and vehicle bus It includes a state detection unit 80 and the control unit 90, for detecting a running state of the two.

  The storage device 30 stores a program and a database for executing various navigation functions. The program includes functions necessary for navigation, such as a route search to a destination, a program for displaying road traffic information received from VICS, and other route guidance.

  The database includes map data, facility data, and the like, and the map data includes road (link) data and intersection data related to roads. Link data is data related to roads connecting intersections, node data indicating the coordinates of the start and end points of roads, type data indicating road types (national roads, ordinary roads, prefectural roads, etc.), width, and regulations. (For example, one-way), and data such as the number of lanes. The link data may include altitude information indicating the altitude or the altitude of the link, and the altitude information can be used in the side view display. The intersection data includes restriction data relating to the coordinate position of the intersection, the name of the intersection, the right / left turn of the intersection, and the like. The facility data includes information such as the location and name of restaurants, parking lots, shops, buildings, and many other landmarks.

  The data communication control unit 32 enables data communication between an external network and vehicles via an internal communication function or an external communication function such as a mobile communication terminal. For example, road traffic information can be obtained from a network server or other vehicles. The display control unit 50 displays a road map around the vehicle position on the display, and synthesizes and draws the vehicle position mark, road traffic information, and a side view described later on the road map.

  The program memory 60 loads a program stored in the storage device 30 and, for example, a program 62 that searches for a route to a destination, a program 64 that provides route guidance, a program that displays a road map, road traffic information, and a side view. 66 etc. are stored. The data memory 70 stores map data 72 read from the storage device 30, route data 74 searched for a route, road traffic information 76 received from VICS, and the like.

  The state detection unit 80 is connected to the vehicle bus, detects a vehicle speed pulse signal of the own vehicle, steering wheel steering angle information, parking information, and the like, and outputs these signals to the control unit 90. The control unit 90 determines the traveling state of the vehicle based on the signal from the state detection unit 80, and further controls the navigation operation according to various programs stored in the program memory 60 in response to an instruction from the user interface 20. .

  The navigation apparatus according to the present embodiment has a function of displaying a side view on a display under certain conditions when road traffic information is acquired from the outside. The side view shows the positional relationship between the target road and the other road in the vertical direction when the target road of the road traffic information runs side by side with another road or overlaps in the vertical direction due to an elevated type, and Road traffic information is given to the target road. When a road map is displayed in two dimensions, it is difficult to identify nearby roads, overlaid roads and their road traffic information, but by displaying the side view, the target road and other roads can be identified. And the road traffic information is displayed for which road is displayed at a glance.

  FIG. 2 is a flowchart illustrating a side view display method in the navigation device according to the present embodiment. First, when the host vehicle starts traveling, the control unit 90 detects the host vehicle position based on outputs from the GPS receiver 10 and the self-contained navigation sensor 12 (step S101). The control unit 90 reads the map data around the detected vehicle position from the storage device 30, and causes the display control unit 50 to display the map data around the vehicle position on the display 52 (step S102). In addition, the vehicle position mark is drawn on the road map so that the position of the vehicle can be known. In this way, the road map on the display is scrolled as the vehicle travels.

  While the host vehicle is traveling, the control unit 90 monitors whether road traffic information has been received from the VICS / FM receiver 16 or the data communication control unit 32 (step S103). The road traffic information includes a target road (link) and corresponding road traffic information. The road traffic information includes traffic jam information, road regulation information, construction information, and the like. When the road traffic information is acquired, the control unit 90 identifies the target road (step S104), compares the coordinate position of the target road with the coordinate range that can be displayed on the display, and displays the target road on the display. It is determined whether or not.

  When displaying the target road, the control unit 90 displays road traffic information and determines whether to display a side view (step S105). Whether or not to display the side view is determined based on whether or not there is another road in the vicinity of the target road. For example, it is determined that the side view is displayed when other roads run in parallel (extends substantially in parallel) within a certain distance from the target road, and when there is a vertical overlap. In this case, the fixed distance is the distance in the plane direction in the two-dimensional road map, and is variable according to the scale of the road map displayed on the display, and if the scale is reduced as in wide area display, Accordingly, the certain distance may be increased. In addition to the above-described determination method, a road to be side-viewed may be registered in advance in the link data of the map database, and the side view may be displayed when the target road matches this.

  When determining that the side view is to be displayed, the control unit 90 creates image data for the side view (step S106). The image for side view is configured using a graphic pattern prepared in advance to represent a road, a mark for identifying road traffic information, characters, numbers, and the like.

  Next, the control unit 90 displays the side view by interruption processing (step S107). When the interrupt process is executed, the display control unit 50 displays the side view on the display 52 based on the provided image data (step S108).

  The display mode of the side view is not particularly limited. For example, from the state in which the normal road map is displayed as shown in FIG. 3A, the side view is displayed at the bottom of the road map as shown in FIG. The SV may be displayed, or the display may be divided into two screen displays as shown in FIG. 3C, and the road map may be displayed on one side and the side view SV displayed on the other side.

  Next, a display example of the side view will be described. FIG. 4A is a display example when the highway overlaps with a general road due to an elevated type and the highway is congested. Here, the road traffic information includes information that the highway is congested. A highway H and a general road R are displayed vertically so as to be connected to the vehicle position mark M. The vertical relationship between the highway H and the general road R is determined with reference to altitude information included in the link data of the map database. When there is no altitude information, the highway is displayed above. The general road R is a section corresponding to the congestion section of the highway H. On the highway H, an arrow J indicating that there is a traffic jam is displayed, and a traffic jam distance (for example, 10 km) is displayed together with the text of the traffic jam. On the general road R, an arrow K indicating that it is flowing smoothly is displayed, and a comfortable character is also displayed.

  FIG. 4B is a display example when both the highway and the general road are congested. In this case, an arrow J indicating a traffic jam and a traffic jam distance (10 km) are displayed on the highway H and the general road R, respectively.

  FIG. 4C is a display example when the expressway is congested and a part of the general road is congested. An arrow J is shown for a traffic jam section of the general road R, and an arrow K indicating that the other section is comfortable is shown.

  Thus, by displaying the side view together with the road map, the user can understand at a glance which road the traffic jam information is for.

  The control unit 90 may also display a side view identification mark P on the road map in order to know which area side view is displayed on the road map of the display when displaying the side view. desirable. The side view identification mark P may blink an arrow P indicating a traffic jam, or may display a side view display area with a frame P as shown in FIG. Thereby, the association between the side view and the road map can be easily recognized.

  Next, a second embodiment of the present invention will be described. In the second embodiment, when the route to the destination is searched for in the navigation device and the route guidance is performed, the side view is interrupted and displayed. FIG. 6 is an operation flow of side view display according to the second embodiment.

  First, when a destination is set (step S201), a route to the destination is searched (step S202), and guidance to the destination is performed according to the searched route (step S203). When the road traffic information is acquired (step S204), the control unit 90 identifies the target road (step S205), and determines whether the target road is included in the searched route (step S206). If the search route is included, side view image data is created as in the first embodiment, and the side view is displayed on the display by side view interrupt processing (step S207).

  When the side view is displayed, the user can select any route of the road displayed in the side view. If the highway is prioritized during route search, the highway route is selected. If the side view displays that the general road is comfortable, the general road is selected. It can be changed to a route to travel. On the other hand, even when a general road is prioritized, if the highway is found to be comfortable by the side view display, it is possible to change to a route on the highway. .

  The instruction to change the route is performed using the user interface 20 (see FIG. 1). Preferably, a selection instruction can be issued from the side view. For example, in the side view shown in FIG. 4, “10 Km” or “comfort” indicating the degree of traffic jam is used as the input button B.

FIG. 7 is a display example of the side view of the second embodiment. The vehicle position mark M is displayed on the road map of the display, and the guidance route G to the destination is shown. In front of the vehicle position on the guide route G, traffic information J is displayed, and a side view identification mark P indicating that the traffic information J area is displayed in side view is shown. Here, the user knows that the general road R is more comfortable than the highway H by the side view display, and selects the general road R as a route. For example, if it is a touch panel, the button B of “5 Km” is touched. This selection by the user is transmitted to the control unit 90 and triggers a reroute to the destination.
The above input method is an example, and a general road may be selected by touching the general road R. Moreover, you may make it perform by cursor operation besides touch panel operation.

  Returning to FIG. 6 again, when there is a selection of the road displayed in the side view (step S208), the control unit 90 determines whether or not the selected road matches the searched route (step S209). If they do not match, the route to the destination is re-searched using the selected road (step S210). The result of the re-search is reflected in route guidance, expected arrival time, and the like. If it matches the search route, no re-search is performed.

  As described above, according to the second embodiment, when there is road traffic information on the route to the destination, the side view is automatically displayed by the interruption process, so the user can avoid the obstacle in advance. Route can be selected at an appropriate timing.

  Also, if the side view includes an expressway, even if the target section of the road traffic information is short, before the vehicle position approaches the exit or entrance of the interchange before this target section It is desirable to display the side view together with the exit or entrance of the interchange. For example, as shown in FIG. 8A, a side view is displayed when the vehicle position reaches a predetermined distance before the interchange entrance IN, and the display of the interchange entrance IN is included in this side view. A road to be traveled can be selected easily and in a timely manner, and if an expressway is selected, it is possible to notify from which entrance the expressway is entered. Similarly, as shown in FIG. 8B, when the vehicle position reaches a predetermined distance before the interchange exit OUT, a side view is displayed, and the display of the interchange exit OUT is included in this side view. When the user selects a general road, the user can be notified of which exit to exit the highway.

  Furthermore, in the above example, the side view is displayed mainly by acquiring road traffic information as a trigger. However, the present invention is not limited to this, and the vehicle position is constant from the road or area that is the target of the road traffic information. May be displayed when approaching a distance (or a certain time).

  Next, a third embodiment of the present invention will be described. The third embodiment allows a user to arbitrarily display a side view. As shown in FIG. 9A, traffic jam marks J1, J2, and J3 are displayed on the road map. At this time, it is desirable to identify and display road traffic information associated with a road or side view that overlaps due to an elevated type or the like. For example, as shown in FIG. 9C, the road or traffic jam mark J2 associated with the side view is displayed in a shape subjected to outline processing, unlike other traffic jam marks J1 and J3. Of course, the present invention is not limited to this, and the color and size may be changed for identification.

  When the user arbitrarily moves the cross cursor D on the road map and the cross cursor D coincides with the traffic jam mark J2, or when the user touches the traffic jam mark J2 in the case of a touch panel, the control unit 90 triggers this. Then, the side view is interrupted and displayed as shown in FIG. When the cross cursor D is matched with the road traffic information, the side view may be displayed with the input from the user.

  According to the third embodiment, road traffic information arbitrarily selected by the user can be appropriately displayed in the side view. Then, it is possible to accurately recognize which road the road traffic information is targeted for.

  The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific embodiments, and various modifications can be made within the scope of the gist of the present invention described in the claims. Deformation / change is possible.

  In the above embodiment, the side view is displayed so that a plurality of roads positioned in the vertical direction are projected from the horizontal direction (beside the side). However, the side view is given a slight angle in the direction of viewing the plurality of roads. It may be a view. Furthermore, the road displayed in the side view is not limited to two roads in the vertical direction, and may indicate the positional relationship between the upper and lower roads of three or more roads. Further, these roads may be other than combinations of ordinary roads and highways, and may be toll roads, capital highways, and the like. Moreover, in the said Example, although traffic congestion information was mainly illustrated as road traffic information, other regulation information and accident information may be sufficient.

  The present invention is used in a navigation device capable of acquiring road traffic information. The navigation device may be a navigation system combined with other audio devices and video devices.

It is a figure which shows the structure of the navigation apparatus which concerns on the Example of this invention. It is a figure which shows the operation | movement flow of the side view display in the navigation apparatus of a present Example. It is a figure which shows the display mode of a side view. It is a figure which shows the example of a display of a side view. It is a figure which shows the example of a display which identifies a side view. It is a figure which shows the operation | movement flow of the side view display of 2nd Example of this invention. It is a figure explaining the operation | movement which inputs selection of a road from a side view. It is a figure which shows the other example of a display of a side view. It is a figure which shows the operation | movement flow of the side view display of 3rd Example of this invention.

Explanation of symbols

1: Navigation device 10: GPS receiver 12: Autonomous navigation sensor 20: User interface 30: Storage device 32: Communication control unit 52: Display 60: Program memory 70: Data memory 80: State detection unit 90: Control unit SV: Side view B: Input button G: Search route H: Expressway R: General road J: Arrow (congestion information) K: Arrow (comfort information)
P: Side view identification mark

Claims (18)

An in-vehicle electronic device having a navigation function for guiding a route to a destination,
A display capable of displaying a road map;
An acquisition means for acquiring road traffic information;
Search means for searching for a route to the destination;
Display means for displaying the acquired road traffic information on the road map of the display,
When the target road of road traffic information is within a certain display range from other roads, the display means indicates the positional relationship between the target road and the other roads in the vertical direction, and A side view in which at least road traffic information is given to the road is displayed on the display together with the road map ,
The in-vehicle electronic device further includes a selection unit that selects either the target road or the other road displayed by the side view, and the search unit selects the target road or the other road by the selection unit. Re-search the route to the destination,
Automotive electronic device. The in-vehicle electronic device according to claim 1, wherein when the road traffic information is acquired, the display unit displays a side view in response thereto. The in-vehicle electronic device according to claim 1, wherein the display unit displays identification information for identifying an area corresponding to a display area by a side view on the road map. The in-vehicle electronic device includes user input means, and when the road traffic information displayed on the road map is selected by the user input means, the display means displays a side view . The vehicle-mounted electronic device as described in one . The display means, when displaying road traffic information on a road map, a road traffic information associated with side-view and identify the other road traffic information display, according to 4 any one claims 1 In-vehicle electronic devices. The in-vehicle electronic device according to claim 1 , wherein the display unit displays a side view when the target road is included in a searched route to a destination. The in-vehicle electronic device according to claim 1 , wherein the selection unit is executed by a selection screen displayed in a side view. The on-vehicle electronic device includes storage means for storing road map data including road altitude information, and the display means specifies the vertical position of the target road and other roads based on the altitude information, and performs a side view. The on-vehicle electronic device according to any one of claims 1 to 7, wherein: The display means, and the interchange of entrance or road and other roads of interest connected to the outlet, to display road traffic information corresponding to the road of the target in the side-view, according to any one of Claims 1 to 8 In-vehicle electronic devices. A method for displaying road traffic information on a display in a navigation device,
Obtaining road traffic information;
When the target road of the road traffic information is within a certain display range from another road, the positional relationship between the target road and the other road is expressed in the vertical direction, and at least the road traffic is included in the target road. the side view that information has been given, only including the step of displaying on the display along with the road map,
The side view includes an input screen for selecting either the target road or another road in order to re-search the route to the destination.
Display method. The display method according to claim 10 , wherein the displaying step is executed when road traffic information is acquired from the outside. The display method according to claim 10 or 11 , wherein the displaying step is executed when an instruction is given from a user. The display method according to claim 10 , wherein the displaying step displays identification information for identifying an area corresponding to a display area by a side view on the road map. The display method according to claim 10 , wherein the displaying step is executed when the target road is included in a searched route to a destination. 15. The display method according to claim 10 , further comprising a step of identifying and displaying the road traffic information associated with the side view when the road traffic information is displayed on the road map. . A program for displaying road traffic information on a display in a navigation device,
Obtaining road traffic information;
When the target road of the road traffic information is within a certain display range from another road, the positional relationship between the target road and the other road is expressed in the vertical direction, and at least the road traffic is included in the target road. Including displaying the side view with information on a display together with a road map,
The side view includes an input screen for selecting either the target road or another road in order to re-search the route to the destination.
program. The program according to claim 16 , wherein the displaying step displays identification information for identifying an area corresponding to a display area by a side view on the road map. The program according to claim 16 or 17 , wherein the displaying step is executed when the target road is included in a searched route to a destination.

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