JP2012018019A - Two screen map display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a "two screen map display device" that automatically displays a map appropriate for each road when driving an ordinary road or driving an express way, without a special operation by a user when a monitor is divided into two display screens each of which is to display a map of various kinds including an information map.SOLUTION: The two screen map display device is provided with divided screen display means for dividing a monitor into two screens on each of which a map is displayed. When a vehicle is driving on an ordinary road, the divided screen display means displays a detailed map in one screen of the two screens divided and displays another map on the other screen. When the vehicle is driving on an expressway, the divided screen display means displays a wide-area map in one screen and displays another map on the other screen. When the vehicle is driving on the ordinary road, the other screen displays any one of a crossing information map, a narrow street map, a main crossing information map on a guide route and an interchange information map.

Description

  The present invention relates to a map display device that displays a map around a current position on a monitor screen, for example, in a navigation device or the like, and in particular, a map two-screen display that can divide the screen into two and display a map on each screen. Relates to the device.

  In a navigation apparatus, a map / information storage medium such as a DVD-ROM, a hard disk, a memory card, etc., which stores map data for drawing a map and facility information data for retrieving a facility, etc., and this map / information storage medium And a vehicle position detection device that detects the current position of the vehicle and the direction of the traveling direction using a GPS receiver, a self-contained navigation device such as a distance sensor and a gyro, and the like. The map data including the current position of the vehicle is read from the map / information storage medium, the map image around the vehicle position is drawn on the screen of the display device based on the map data, and the vehicle position mark is superimposed on the display screen. The map image is scrolled and displayed as the vehicle moves, or the map image is fixed to the screen By moving the position mark, the vehicle is to understand at a glance whether the running where current.

  The map data stored in the map / information storage device as described above is divided into longitude and latitude widths of appropriate sizes according to various scale levels, and roads and the like are expressed by longitude and latitude. Stored as a coordinate set of nodes. A road is composed of a combination of two or more nodes, and map data displays a road layer consisting of a road list, a node table, an intersection configuration node list, etc., and roads, buildings, facilities, parks, rivers, etc. on the map screen. Map data such as a background layer, and information data for displaying characters, map symbols, etc., such as administrative division names such as municipalities, road names, intersection names, and facility names.

  In addition, this navigation device has a route guidance function that allows the user to easily travel to a desired destination without making a mistake on the road. According to this route guidance function, destinations and waypoints are set by various means using addresses, telephone numbers, map scrolling, nearby landmarks, etc., and routes connecting these points from the departure point to the destination Appropriate routes are calculated and presented in consideration of various conditions. Also, the route selected by the user is stored as a guide route, and while driving, the guide route is drawn on the map image with a different color from other routes and displayed on the screen. When approaching an intersection where the course of course should be changed within a certain distance, the intersection is enlarged and displayed on the screen by drawing an arrow indicating the direction in which the course should be changed, or a right or left turn is guided by voice. In this way, the user can be guided to the destination.

  As described above, the navigation device has the basic operation of accurately detecting the current position, displaying a map corresponding to the current position on the monitor and displaying the current position in an overlapping manner. It is necessary to make it easy to determine the location of a certain point as a whole, what the road around the current location is, and what is around it. . When traveling along a guidance route in this navigation device, the left and right screens are displayed in order to guide a right-left turn intersection according to a preset guidance route so that the vehicle can travel safely without getting lost from the current position to the destination. The screen is displayed in such a manner that an enlarged view of the intersection is displayed on one screen and a detailed map of the surroundings is displayed on the other screen.

  As described above, in the navigation device, the monitor screen is divided into two parts and a separate image is displayed on each of them. For example, as shown in FIG. In addition, a wide area map is displayed on the left screen, and a detailed map is displayed on the right side. As a result, the current position is grasped from the whole, and the situation around the current position can be easily understood.

  When traveling on a highway, for example, as shown in FIG. 15 (c) as a split screen standard mode, a highway schematic diagram is displayed on the left screen, and a wide area map is displayed on the right side. As a result, the parking area, service area, interchange, junction, etc. are displayed in order from the current position on the highway schematic only in front of the current road due to the uniqueness of driving on the highway. Displays a wide-area map showing where it is when viewed from the whole.

  Various displays using the split screen include the intersection guide map for guidance of the left and right turn intersections as described above when driving on a general road and the main intersections that pass through to the destination according to the guide route. The displayed intersection guide map, a narrow street map when traveling on a narrow road such as a densely packed building, an interchange guide map when entering an expressway, etc. are displayed on one of the divided screens. Further, when the vehicle approaches the destination, a particularly detailed map may be displayed in order to grasp the situation around the destination where the user gets off and walks.

  In addition, when traveling on a highway, in addition to the standard split screen display mode as described above, in addition to the junction of the current highway, the junction connection guide diagram showing the connection with the surrounding highway, In addition, a highway network guide map that displays the highway network in detail in detail, a detailed map of the surroundings displayed when you want to know facilities that are currently visible or invisible from the current highway, When you want to know the state of the surrounding road when you leave, you will see a detailed map of the surrounding area, a guide map of the exit interchange, etc. on one of the divided screens.

  Besides, extremely various guide maps have been proposed according to the ideas of navigation manufacturers and the like, and these guide maps can be displayed on any of the divided screens at any time by the initial setting of the navigation device or by the user's instruction. These various guide maps and the like are displayed interrupted on a preset side in the divided screen.

  In addition, when displaying a map on a split screen, when approaching a right or left turn intersection, the technology for switching the map screen of the current location on one screen to an enlarged view of the intersection is disclosed in Patent Document 1, and during highway driving Patent Document 2 discloses a technique for displaying a head-up display at a fixed scale on one map screen on a divided screen.

Japanese Patent Laid-Open No. 10-96649 JP 2004-354260 A

  As described above, the navigation device monitor is divided, and different map screens are displayed to provide easy-to-understand guidance. At that time, for example, a general road enters a highway, and a highway When you leave a road and drive on a general road, if you set it so that a specific screen is simply displayed on either the left or right screen, as shown in FIG. 15 and FIG. Display.

  That is, in FIG. 15 (a), as described above, as a divided screen standard display mode when traveling on a general road, when a wide area map is displayed on the left side and a detailed map is displayed on the right side, a subsequent guide map is displayed. If it is decided to always display such a screen on the left screen, when entering the expressway as it is, the expressway schematic is displayed on the left screen as shown in FIG.

  As a result, the right screen continues to display the detailed map, so the highway schematic and wide area map screen, which is the standard display mode when driving on an expressway as shown in FIG. The detailed map screen is displayed instead of the wide area map screen. Therefore, when the user enters the expressway, the display image switching operation is performed for the screen on which the detailed map is displayed in the state displayed as shown in FIG. It is necessary to.

  Further, from the state where the highway schematic is displayed on the left side and the wide area map is displayed on the right side as shown in FIG. 15C, which is a standard display mode when driving on the highway, this highway is displayed. When the user gets off and travels on a general road, a wide area map is displayed on the right side in order to obtain a standard mode when traveling on a general road as shown in FIG. Therefore, as shown in FIG. 16A, when a wide area map is displayed on the left screen, the same wide area map is displayed on the left and right screens when the wide area map is displayed on the right side of the expressway.

  The overlapping map display as shown in FIG. 16 (a) is useless, so the user performs an operation to switch the right screen to the detailed map so that the standard display mode as shown in FIG. 15 (a) is obtained. As a result, as shown in FIG. 16B, the left screen in the figure becomes the wide area map and the right screen becomes the detailed map.

  As described above, if you set in advance to display a wide area map when traveling on a general road and a highway schematic diagram when traveling on an expressway, corresponding to the road traveling on one side of the split screen, Each time the traveling road type is changed from an expressway to a general road on the expressway, the user must change the display map.

  Therefore, according to the present invention, when displaying various maps including a guide map on a screen obtained by dividing the monitor into two parts, the user can drive on a general road and on a highway without performing any special operation. The main object of the present invention is to provide a map two-screen display device capable of automatically displaying a map suitable for each traveling road.

  In order to solve the above-described problem, a map two-screen display device according to the present invention divides a monitor into two parts and displays a map on each of them, and a split screen for displaying a map output from the image output means Display processing means, wherein the split screen display processing means displays a detailed map on one of the divided screens and displays another map on the other screen when the vehicle is traveling on a general road. In addition, when the vehicle is traveling on an expressway, a wide area map is displayed on one screen, and another map is displayed on the other screen.

  In another map two-screen display device according to the present invention, in the map two-screen display device, the divided screen display processing means displays a detailed map on one screen when the vehicle starts traveling on a general road. In addition, a wide area map is displayed on the other side, and when the vehicle starts traveling on the highway, the wide area map is displayed on one screen, and the highway schematic diagram is displayed on the other screen.

  Another map two-screen display device according to the present invention is the map two-screen display device, wherein the split screen display processing means displays an intersection guidance on the other screen when the vehicle is traveling on a general road. Any one of a map, a narrow street map, a guide map of main intersections on a guide route, and an interchange guide map is displayed.

  Another map two-screen display device according to the present invention is the above-described map two-screen display device, wherein the split screen display processing means displays a junction guidance on the other screen when the vehicle is traveling on an expressway. One of a map, a highway network guide map, a detailed map, and an interchange guide map is displayed.

  Another map two-screen display device according to the present invention is the above-described map two-screen display device, wherein the divided screen display processing means is within a predetermined distance from the expressway exit when the vehicle exits the expressway. When approaching, a detailed map is displayed on one screen and the other map is displayed on the other screen, as in the case of traveling on a general road.

  Since the present invention is configured as described above, when a map screen or a guide map is displayed on each of the two screens divided on the monitor, the user does not perform any special operation and does not need to perform a special operation. A map suitable for each traveling road can be automatically displayed when traveling on the road.

It is a functional block diagram of the Example of this invention. It is an operation | movement flowchart which performs the division | segmentation screen display process at the time of the general road driving | running | working in the Example. It is an operation | movement flowchart which performs the standard display process at the time of the general road driving | running | working of FIG. It is an operation | movement flowchart which performs the intersection guide map display process of FIG. It is an operation | movement flowchart which performs the narrow street map display process at the time of the narrow street driving | running | working of FIG. It is an operation | movement flowchart which performs the main intersection guidance map display process on the guidance route of FIG. It is an operation | movement flowchart which performs the display process of the interchange guidance map at the time of the driving planned highway entrance approach of FIG. It is an operation | movement flowchart which performs the most detailed map display process at the time of the destination approach of FIG. It is an operation | movement flowchart which performs the division | segmentation screen display process at the time of the highway driving | running | working in the Example. It is an operation | movement flowchart which performs the standard display process at the time of highway driving | running | working of FIG. It is an operation | movement flowchart which performs the guidance map display process by the user instruction | indication of FIG. It is an operation | movement flowchart which performs the detailed map display process by the user instruction | indication of FIG. It is an operation | movement flowchart which performs the detailed map display process at the time of the traffic jam of FIG. It is an operation | movement flowchart which performs the display process in the highway exit of FIG. It is a figure which shows the example of the conventional split screen display. It is a figure which shows the other example of a conventional split screen display.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a functional block diagram of an embodiment of the present invention, showing an example in which the map two-screen display device according to the present invention is applied to a vehicle navigation device. The example provided with the various function parts is shown so that various maps or a guide map can be displayed in a mode. Therefore, any one of these functional units can be selected and implemented in various modes. Note that these functional units can also be referred to as means for performing the respective functions.

  In the example of FIG. 1, a system comprising a ROM that records programs, a CPU that performs arithmetic processing and the like to execute these programs, and a RAM that stores temporary data during various arithmetic processing and the like in order to function as a navigation device. Each functional unit is connected to the control unit 10 so that a predetermined operation can be performed.

  In the illustrated navigation apparatus, a vehicle position detection unit 13 is connected to the system control unit 10 and the position data of the GPS receiver 11 is input. By inputting the movement data of the vehicle from the azimuth detecting unit 12, the current position of the vehicle is accurately detected. Further, the VICS information input unit 14 can receive FM radio waves, beacons, etc., capture traffic information, and particularly input traffic jam information.

  In the instruction signal input unit 17, various instruction signals can be input by the remote controller 15 or by recognizing a voice as a user instruction signal, and further by a touch panel operation of the monitor 23. The data fetching unit 19 fetches necessary map data, facility information, etc. from a map / information data recording medium 18 such as a DVD-ROM or a hard disk or a memory card, and the data recording medium is like a hard disk or a memory card. If the data can be easily written, it can be recorded on the data recording medium so that the data taken in from the outside or the data processed by other functional units can be read later and used. I have to.

  In the guidance route calculation unit 20, the current position of the vehicle detected by the vehicle position detection unit 13 is fetched, and the map is scrolled by operating the cursor displayed on the screen or the touch panel, or by inputting an address. Takes in the waypoints and final destinations set by various methods such as entering a telephone number, and calculates and presents the optimum guidance route under various conditions such as the shortest required time, shortest distance, and general road priority .

  The guide saddle route storage unit 21 stores the guide route selected by the user for the guide route calculated and presented by the guide route calculation unit 20. The guidance route guidance unit 22 performs guidance corresponding to the original position detected by the vehicle position detection unit 13 for the guidance route stored in the guidance route storage unit 21. In this case, for example, the vehicle turns right or left. When approaching, an intersection guide map can be output, and voice guidance can also be provided. As a function of the guidance route guide unit 22, a function of the split screen display processing unit 30 as described later may be performed.

  The image output unit 24 outputs various images that the navigation device guides the user. In particular, when the divided screen is displayed in the present invention, the image processed by each functional unit is output to the monitor 23. The voice output unit 26 outputs various kinds of guidance, such as guidance for guidance routes, from the speaker 25 by voice.

  The split screen display processing unit 30 performs a central function of the present invention. In particular, the split screen display processing unit 31 for traveling on a general road for traveling on a general road and the high speed for traveling on a highway. And a road split screen display processing unit 32. Among them, the split screen display processing unit 31 for traveling on a general road includes a standard display processing unit 33 for performing a standard split screen display process when traveling on a general road, as shown in FIG. The wide area map is displayed on the screen on one side, and the detailed map is displayed on the screen on the other side.

  In the specific interruption display processing unit 34 in the divided screen display processing unit 31 for general road traveling, in the illustrated example, an intersection guide map 35, a narrow street map 36, a main intersection guide map 37 on the guidance route, and a planned highway entrance Processing for displaying a map including a specific guide map set in advance, such as the interchange guide map 38, is performed. In addition, about these guide maps, the map is displayed in an easy-to-understand manner and can be called a broad map. When the destination is approaching, the most detailed map display processing unit 39 performs processing for displaying a detailed map of the surroundings when the vehicle is traveling along the guidance route and approaches the destination.

  On the other hand, a standard display processing unit 40 is also provided in the split screen display processing unit 32 for traveling on the expressway in order to perform standard split screen display when traveling on the expressway. Here, as shown in FIG. 15C, a highway schematic diagram is displayed on one side and a surrounding wide area map is displayed on the other side.

  The specific interrupt display processing unit 41 in the split screen display processing unit 32 for highway driving automatically performs map interrupt display processing including various guide maps according to a user instruction or under preset conditions. In the illustrated example, as the user instruction guide map 42, an example of a junction connection guide map 43, a highway network guide map 44, and a detailed map 45 is shown. These guide maps are also displayed in an easy-to-understand manner and can be said to be broad maps. Here, as an example of automatically performing an interrupt display, a detailed map 46 for a traffic jam is shown, but the various guide maps shown in the user instruction guide map 42 also have predetermined conditions. It can also be set to display automatically.

  The example of the highway driving split screen display processing unit 32 shown in the figure further includes a highway exit guide map display processing unit 47, which displays a detailed map 45 of the surrounding area when approaching the exit of the highway within a predetermined distance. In addition, an example in which an exit interchange guide map 49 and the like can be displayed is shown.

  The display screen selection unit 50 of the divided screen display processing unit 30 displays the various maps and guide maps performed by the divided screen display processing unit 31 for ordinary road traveling and the divided screen display processing unit 32 for expressway traveling as described above. The process for selecting which of the divided screens to display is performed. In this selection process, when displaying each map as described above, in accordance with the purpose of the map, for example, leave a wide area map or leave a detailed map on the screen on the other side of the display screen. A determination is made as to whether or not to place, and a predetermined map is displayed. This processing can solve the problems of the prior art as shown in FIGS. This display screen selection process will be described in the operation flow of the divided screen display process for various maps and guide maps as will be described later.

  In the function unit of each divided screen display process as described above, the current position data detected by the vehicle position detection unit 13 is used, the traffic jam information from the VICS information input unit 14 is used, and the instruction signal input unit 17 The user's instruction signal is input, the map data, road facility data, various guide maps stored as image data are fetched from the data fetch unit 19 and used, and the guidance route data from the guidance route storage unit 21 is used. , And using the guidance data of the right and left turn intersections guided by the guidance route guide unit 22, the respective processes are performed, and the image output unit 24 displays each on the divided screen of the monitor 23.

  In the present invention composed of the functional blocks as described above, it can be operated by each display process shown in the operation flow as shown in FIG. 2 when traveling on a general road, and each operation shown in the operation flow shown in FIG. 9 when traveling on a highway. Can be activated by a display process. In the divided screen display processing at the time of traveling on a general road shown in FIG. 2, each display process shown in the divided screen display processing unit for traveling at a general road in the divided screen display processing unit 30 of FIG. Next, standard display processing when traveling on a general road is performed (step S1). Here, as described above, as shown in FIG. 15 (a), a predetermined standard display such as displaying a wide area map on one side and a detailed map on the other side is performed. Details are shown in FIG.

  Next, a specific interrupt display process during traveling on a general road is performed (step S2). As an example of the specific interrupt display processing here, the intersection guide map display processing is performed in the same manner as the specific interrupt display processing portion 34 in the split screen display processing portion 31 for traveling on general roads in FIG. (Step S3). This process is shown in FIG. 4. Here, various currently proposed intersection guide maps such as an intersection schematic diagram, an intersection three-dimensional map, and a travel lane guide map are displayed.

  Further, in the narrow street map display process when traveling on a narrow street, a narrow street map is displayed by a process as shown in FIG. 5 (step S4), and further a main intersection guide map display process on the guidance route is performed (step S5). At that time, the display process can be performed by the process as shown in FIG. Further, an interchange guide map display process at the time of approaching the planned traveling highway entrance as shown in FIG. 7 is performed (step S6).

  In addition, each display process shown in the specific interruption display process during driving on a general road has no particular processing order, and each process is performed according to each condition. In the example of FIG. 2, the most detailed map display process (S7) at the time of approaching the destination is performed at the end as the divided screen display process when traveling on a general road. In this process, as shown in FIG. 8, when the user approaches the destination, a process for displaying the most detailed map of the surrounding area is performed.

  In the split screen display process during general road travel shown in FIG. 2, the standard display process during general road travel shown as step S1 can be performed by performing the operation shown in FIG. That is, in the standard display process (S1 in FIG. 2) during traveling on a general road shown in FIG. 3, first, traveling on a general road is detected (step S11). In this case, the current position is determined by the fact that the current position is not on the highway, the movement locus of the current position is on a general road, or the traveling speed does not continue above a predetermined speed such as 80 km. It is detected that the vehicle is traveling on a general road.

  Thereafter, it is determined whether or not a detailed map is currently displayed on one side of the divided screen (step S12). This can be determined by detecting whether the image output unit instructs the monitor to display a divided screen. If it is determined that the detailed map is not currently displayed on one side of the split screen, the process proceeds to step S13, and the detailed map is displayed on one screen. That is, in principle, a detailed map is displayed so that the surroundings are displayed in detail when traveling on a general road. Here, the detailed map is relative to the wide area map, and as an example, about 1/2000 can be referred to as a detailed map, and about 1 / 10,000 can be referred to as a wide area map.

  If it is determined in step S12 that a detailed map is displayed on one side of the current divided screen, the detailed map is displayed on one screen in step S13 and the process proceeds to step S14. It is determined whether or not a wide area map is displayed on the side. If it is determined that the wide area map is not displayed, the process proceeds to step S15, and the wide area map is displayed on the other screen. When it is determined in step S14 that the wide area map is displayed, the process proceeds to step S16 at the same time as the wide area map is displayed in step S15, and the standard display during traveling on a general road is terminated.

  Thereby, as shown as a display example in step S16, a wide area map is displayed on the left side and a detailed map is displayed on the right side. It should be noted that, regarding the divided two screens, which of the wide area map and the detailed map is displayed on the other side can be set in advance according to the user's preference as necessary.

  As the specific interrupt display process (step S2) during traveling on a general road in FIG. 2, various map display processes are performed. In the intersection guide map display process (step S3), the process shown in FIG. It can be implemented by performing the operation as shown. That is, in the intersection guide map display process (S3 in FIG. 2) shown in FIG. 4, it is detected that the vehicle first approaches the intersection within a predetermined distance (step S21). As an intersection at this time, in principle, a guidance route is set, and when traveling along the guidance route, it means an intersection that turns right or left, but in the navigation device there is no guidance route set However, there are some that display an intersection when approaching a major intersection, so it is not necessary to set a guidance route here.

  When it is detected in step S21 that the vehicle is approaching an intersection, it is determined whether or not a detailed map is displayed on any screen (step S22). Here, as shown in FIG. 3 and as schematically shown in FIG. 4 (a), a detailed map is always displayed when the display according to the standard display mode when traveling on a general road is performed in advance. However, since various images other than the map may be output and displayed on the entire monitor or on the divided screen after that, it is determined whether or not the detailed map is displayed on any screen in step S22, When it is determined that neither of the detailed maps is displayed, the process proceeds to step S23, and the detailed map is displayed on one screen.

  On the other hand, when it is determined in step S22 that a detailed map is displayed on any screen, and after a detailed map is displayed on one screen in step S23, the process proceeds to step S24, and a screen other than the detailed map display is displayed. The intersection guide map is displayed as an interrupt. As a result, as shown in FIG. 4 (b), an intersection schematic diagram is displayed on the other screen with the detailed map displayed on one of the divided screens. Such display screen selection processing is performed by the display screen selection unit 50 in the split screen display processing unit 30 of FIG.

  As described above, when driving on a general road, an enlarged display of the intersection, a schematic display of the intersection, a three-dimensional display of the intersection, and an intersection guide map such as a travel lane guide map are always displayed together with this detailed map. Therefore, the surrounding situation can be displayed in an easy-to-understand manner using the intersection guide map and the detailed map.

  In the example shown in FIG. 4, it is then determined whether or not the intersection has passed (step S25). If it is determined that the intersection has not yet passed, the process returns to step S24 to continue the display. On the other hand, when it is determined that the vehicle has passed the intersection, the intersection guide map is returned to the screen before the interrupt display. As a result, when the standard display mode at the time of driving on a general road is first shown in FIG. 4A, the standard display mode at the time of driving on a general road is restored as shown in FIG. Further, when the display is performed in various other modes, the display is returned to each display.

  As shown in FIG. 5, the narrow street map display process at the time of traveling on the narrow street shown in step S4 of FIG. 2 first detects the traveling on the narrow street (step S31). Here, for example, when it is detected that the vehicle travels on a narrow street followed by a road having a road width of about 3 m to 4 m, the process proceeds to step S32 to determine whether or not a detailed map is displayed on any screen. If it is determined that the detailed map is not displayed on any screen, the process proceeds to step S33, and the detailed map is displayed on one screen. The narrow streets are often prepared so that a detailed map with a smaller scale than the normal detailed map can be displayed, especially for guidance of dense streets.

  When it is determined in step S32 that a detailed map is displayed on any screen, and after a detailed map is displayed on one screen in step S33, the process proceeds to step S34, and any screen other than the detailed map display is displayed. The narrow street map is displayed as an interrupt. This processing is performed by the display screen selection unit 50 in the split screen display processing unit 30 of FIG. As a result, when the standard display mode at the time of driving on a general road as shown in FIG. 5 (a) is first obtained, or from other display modes, the process of steps S32 to S34 is performed, as shown in FIG. Thus, a detailed map is displayed on one screen, and a narrow street map is displayed on the other screen.

  Thereafter, it is determined whether or not the vehicle has exited the narrow street. When it is determined that the vehicle has not yet exited the narrow street, the process returns to step S34 to continue the display. When it is determined that the vehicle has exited the narrow street, the narrow street map interrupt is performed. The screen is returned to the state before the display or the general road standard split screen (step S36). FIG. 5C shows an example in which the standard display mode at the beginning of this processing is the standard display mode when traveling on a general road in FIG. When the vehicle starts running, even if it is a narrow street from the beginning, the processing shown in FIG. 5 immediately displays the narrow street map and the detailed map, and then when the vehicle exits the narrow street, the standard display when driving on a general road It can be made into an aspect.

  In this way, when a vehicle travels on a narrow street, the narrow street map is displayed reliably, and on the other side of the divided screen, a detailed map that assists the narrow street map is displayed, and an easy-to-understand map display is provided. Can do.

  As shown in FIG. 6, the guidance route main intersection guide map display process in step S <b> 5 in FIG. 2 starts to operate when it is detected that there is an instruction to display the main guidance guide map on the first guidance route. This main intersection guide map can be displayed by the selection of the user in many navigation devices, and shows the main intersections from the current location to the destination in order. It is used to grasp the entire route to Thereafter, it is determined whether or not a detailed map is displayed on any screen (step S44). When it is determined that no detailed map is displayed on any screen, the detailed map is displayed on one screen. (Step S43).

  When it is determined in step S42 that a detailed map is displayed on any screen and when a detailed map is displayed on one screen in step S43, the process proceeds to step S44. Perform an interrupt display of the intersection guide map. This processing is also performed by the display screen selection unit 50 in the split screen display processing unit 30 of FIG. As a result, at the beginning of this process, as shown in FIG. 6 (a), when a standard display mode is used when driving on a general road, a detailed map is displayed on one screen as shown in FIG. 6 (b). The other side screen can display the main intersection guide map instructed by the user, display the entire route to the destination and the detailed map side by side, You will be able to easily grasp the details of the area you are in.

  Thereafter, it is determined whether or not an instruction to cancel the main intersection guide map display is input (step S45). When it is determined that the cancel instruction from the user is input, the process proceeds to step S48, and before the main intersection guide map interrupt display is displayed. Or return to the standard road split screen. FIG. 6C shows a standard display at the time of traveling on a general road as shown in FIG. 6A at the beginning of this processing, and therefore an example of returning to the display screen is shown here.

  If it is determined in step S45 that the main intersection guide map display cancel instruction has not been input, the process proceeds to step S46 in the example of FIG. 6 to determine whether another split screen display instruction has been input. The other split screen display instruction at this time includes, in addition to an instruction from the user, for example, a case where an instruction to display an intersection guide map is automatically issued when approaching a right-left turn intersection.

  If it is determined in step S46 that no other divided screen display instruction has been input, the process returns to step S44, where the main intersection guide map is displayed on one side of the divided screen and the detailed map is displayed on the other side. If it is determined in step S46 that another divided screen display instruction has been input, a divided screen display process in which the instruction has been input is performed (step S47).

  Since the interchange guide map display process at the time of approaching the planned highway entrance in step S6 in FIG. 2 detects that the highway entrance on the first planned travel route is within a predetermined distance, as shown in FIG. This process is started (step S51). Thereafter, it is determined whether or not a detailed map is displayed on any screen (step S57). If it is determined that the detailed map is not displayed on any screen, the process proceeds to step S53, and the detailed map is displayed on one screen.

  When it is determined in step S52 that the detailed map is displayed on any screen, and after the detailed map is displayed on one screen in step S53, the process proceeds to step S54, and any screen other than the detailed map display is displayed. Display the interchange guide map. This processing is also performed by the display screen selection unit 50 in the split screen display processing unit 30 of FIG.

  As a result, when the standard display at the time of driving on a general road as shown in FIG. 5A is performed at the beginning of this process, the interchange guide map is displayed on the wide area map display screen side as a result of the process of step S54. The route to the expressway to be entered is displayed in detail on the interchange guide map, and a detailed map around the interchange is displayed on another screen, and the road to the entrance of the interchange can be displayed in an easy-to-understand manner.

  Thereafter, it is determined whether or not the vehicle has entered an expressway (step S55). When it is determined that the vehicle has not entered yet, the flow returns to step S54 to continue this display. If it is determined in step S55 that the vehicle has entered the expressway, the process proceeds to step S56, and a split screen display process during traveling on the expressway as shown in FIG. 9 is performed.

  As shown in FIG. 8, the most detailed map display process at the time of approaching the destination in step S7 of FIG. 2 starts the process from detecting that it is within a predetermined distance from the initial destination (step S61). Thereafter, in the illustrated example, it is determined whether or not to display the most detailed map. Here, when it is set in advance to display the most detailed map when approaching the destination on the navigation device, or when the user specifically indicates that, the process proceeds to step S63, and the detailed map is displayed on any screen. It is determined whether or not. Note that the detailed map when the wide-area map and the detailed map are regularly displayed on the navigation device as described above is generally set to display a map having a larger scale than the most detailed map. When it is determined in step S63 that no detailed map is displayed on any screen, the process proceeds to step S64, and the detailed map is displayed on one screen.

  When it is determined in step S63 that a detailed map is displayed on any screen, and after a detailed map is displayed on one screen in step S64, the process proceeds to step S65. The detailed map is displayed as an interrupt. Thereafter, when it is determined in step S62 that the most detailed map is not to be displayed, the process proceeds to step S66 to determine whether or not the destination has been reached.

  If it is determined that the destination has not yet been reached, the response is divided depending on whether or not the most detailed map is displayed. If the most detailed map is displayed, the process returns to step S65 to display the most detailed map. Continue. On the other hand, when the most detailed map is not displayed, the process returns to step S62 to determine whether or not to display the most detailed map again. Thereafter, this operation is repeated until the destination is reached. If it is determined in step S66 that the vehicle has arrived at the destination, the guidance display is terminated (step S68).

  In the divided screen display process during highway traveling shown in FIG. 9, first, standard display processing for appropriately interrupting and displaying the highway schematic diagram by the operation shown in FIG. 10 is performed (step S71). Thereafter, various specific interrupt display processing during traveling on the expressway is performed (step S72). As the specific interrupt display at this time, in step S73, a guide map display process based on a user instruction for interrupt display such as a junction guide map and an expressway network guide map is performed.

  Further, in step S74, as shown in FIG. 12, when the user wants to display a detailed map in order to know facilities around the road that is currently running even when driving on a highway, A detailed map display process is performed by a user instruction. Further, in step S75, there is a case where it is desired to know the situation of general roads other than the surrounding highways when there is traffic on the expressway, so detailed map display processing at the time of traffic jam as shown in FIG. 13 is performed.

  Furthermore, at the exit of the expressway, there is already less need to display a highway schematic or a wide-area map. Rather, in order to know the situation of the road that goes down the expressway to the general road, and further the state of the general road after that In many cases, it is necessary to display a detailed map in order to know the information, and in step S76, display processing at an expressway exit as shown in FIG. 14 for performing such display is performed. Thereafter, as a split screen display process when traveling on a general road after leaving the expressway, a split screen display process when traveling on a general road as shown in FIG. 2 is performed (step S77).

  As shown in FIG. 10, the standard display processing at the time of driving on the expressway in step S71 in FIG. 9 is first performed, for example, the current position is moving on the expressway, or, for example, traveling at 80 km / h or more for 1 minute or more By detecting such as being on the road, the traveling on the highway is detected (step S81). Thereafter, it is determined whether or not a wide area map is displayed on any screen (step S82). If it is determined that no wide area map is displayed on any screen, the wide area map is displayed on one screen (step S83).

  When it is determined in step S82 that a wide area map is displayed on any screen and when a wide area map is displayed on one screen in step S83, the process proceeds to step S84, and a highway is displayed on a screen other than the wide area map display. Interrupt the schematic. Thereby, for example, as shown in FIG. 15 (c) and as shown schematically in FIG. 10, a highway schematic diagram can be displayed on the left side of the screen, and a wide area map can be displayed on the right side. Here, for example, a highway schematic diagram may be displayed on the right side of the screen, and a wide area map may be displayed on the left side. Therefore, in the following description of various processes, the standard display mode of the split screen on the highway is described as displaying a highway schematic and a wide area map.

  As shown in FIG. 11, the guidance map display processing by the user instruction shown in step S73 of FIG. 9 starts by inputting the guidance map display instruction by the first user (step S91). The guidance map display instruction by the user at this time varies depending on the function provided by each navigation device. For example, a junction guidance map showing a highway in a junction connection or a highway that widely guides the highway network A display instruction such as a network guide map is input.

  Thereafter, the instructed guide map is interrupted and displayed on a screen other than the wide area map display (step S92). In other words, on the expressway, a detailed map is not necessary unless it is a special time, and many people want to know what position they are currently driving. If it is, the display is interrupted and various guide maps instructed by the user are interrupted and displayed on another screen. This processing is performed by the display screen selection unit 50 in the split screen display processing unit 30 of FIG. As a result, when standard display during highway driving is performed as shown in FIG. 11 (a), various guide maps can be displayed while leaving a wide area map as shown in FIG. 11 (b).

  At this time, for example, when a highway network guide map is already displayed on one screen and a highway schematic map is displayed on the other screen, when the user instructs display of the junction guide map, the wide area map is displayed. In this embodiment, the junction guide map may be displayed on either side. However, the priority order of the guide map to be displayed, the highway schematic diagram, and the like can be set according to various modes.

  Thereafter, in step S93, it is determined whether or not the guide map display is to be canceled. For example, when it is detected that the user has issued an instruction to cancel the various display instructions detected in step S91, the guidance is displayed in step S98. Processing to return the figure display screen to the previous display is performed. Accordingly, in the illustrated example, as shown in FIG. 11 (c), the standard display at the time of traveling on the highway as shown in FIG.

  If it is determined in step S93 that the guide map display is not canceled, it is determined in the illustrated example whether or not another specific interrupt display instruction has been input. That is, when performing various guide map display processes as shown in FIG. 9S72, the next guide display instruction may be issued without canceling the previous guide map display instruction. An input of a display instruction is detected.

  If it is determined in step S94 that another specific interrupt display instruction has been issued, that is, if the user has again entered a guidance map display instruction, the process of step S91 is substantially performed, and the process returns to step S92. Then, a guide map interrupt display process is performed in accordance with the new instruction as described above. When it is determined in step S94 that no other specific interrupt display instruction has been input, in the illustrated embodiment, it is determined in step S95 whether or not an expressway exit on the guidance route has been approached.

  When it is determined in step S95 that the highway exit on the guidance route has not been approached yet, the process returns to step S92 and the displayed guide map is continued. If it is determined in step S95 that the highway exit on the guidance route is within a predetermined distance, the display processing at the highway exit as shown in FIG. 9S76 and the operation described in FIG. I do.

  As shown in FIG. 12, the detailed map display process by the user instruction shown in step S74 of FIG. 9 is started by inputting the detailed map display instruction by the first user (step S101). Next, a detailed map is interrupted and displayed on a screen other than the wide area map display. This processing is performed by the display screen selection unit 50 in the split screen display processing unit 30 of FIG. As a result, for example, from the standard display state when driving on an expressway as shown in FIG. 12 (a), as shown in FIG. However, if the user needs it, display a detailed map on the other side in order to confirm various facilities such as public facilities and hospitals that exist around the expressway that is currently running. Can do.

  Thereafter, it is determined whether or not to cancel the detailed map display (step S103). When an instruction to cancel is input, the process proceeds to step S106 to return the guide map display screen to the previous display. Accordingly, in the example shown in FIG. 12, as shown in FIG. 12C, the standard display state at the time of traveling on the expressway as shown in FIG.

  In addition, when it is determined that the detailed map display is not canceled in step S103, that is, it is determined that the instruction to cancel the display is not input for the detailed map display instruction detected by the user in step S101. After that, the same processing as steps S94, S95, and S97 of FIG. 11 is performed thereafter. Therefore, the description here is omitted.

  As shown in FIG. 13, the detailed map display process at the time of traffic jam shown in step S75 of FIG. 9 detects that the low-speed traveling of the average speed of the first vehicle below a predetermined value such as 20 km / h for a predetermined time is continued. Alternatively, the processing is started by detecting the traffic jam on the running road by detecting that the traffic is jammed by the VICS information (step S112).

  After that, the detailed map is interrupted and displayed on a screen other than the wide area map display. In other words, when driving on a highway, it is often the case that you drive on a highway far away, so in principle, a wide area map is displayed, and in order to know the state of surrounding general roads in traffic jams on other screens, a detailed map Is displayed. Here, the display of the detailed map at the time of traffic congestion as described above indicates an operation in the case of automatically displaying the preset map in the navigation device.

  By the processing of step S112, for example, as shown in FIG. 13 (a), when the standard display at the time of driving on the highway is initially performed, the side on which the highway schematic is displayed as shown in FIG. 13 (b). The detailed map is interrupted and displayed, and the traffic on the surrounding general road can be known from the detailed map while the traffic information by VICS is displayed on the wide area map.

  Thereafter, it is determined whether or not the traffic jam has been resolved (step S113). When it is detected that the traffic jam has been resolved, the process proceeds to step S116 to return the guidance map display screen to the previous display. In the illustrated example, the state returns to the standard display state during traveling on the expressway shown in FIG. If it is determined in step S113 that the traffic jam has not been resolved, the process proceeds to step S114. However, since the same operation as in FIGS. 11 and 12 is performed thereafter, the description thereof is omitted here.

  As shown in FIG. 14, the display process at the expressway exit shown in step S76 of FIG. 9 starts to operate when it first detects that the exit of the expressway is within a predetermined distance (step S121). This action can be detected automatically when the vehicle is driving on the guide route, but even when not driving on the guide route, the driver has approached an interchange that is about to leave the highway. When you notice by looking at the road signs, etc., you no longer need the guidance for the entire expressway, and when you want to use the interchange guidance or the general road guidance screen, touch the display for general road driving guidance. For example, the operation of step S121 can be changed.

  Thereafter, it is determined whether or not the detailed map is being displayed (step S122). When the detailed map is not displayed, the detailed map is displayed on a screen other than the wide area map display screen. That is, it is necessary to know the state of the road connected to the general road when leaving the expressway, and the detailed map display is convenient for traveling on the general road. Since the status is easy to understand, the detailed map is displayed when the detailed map is not currently displayed, and when the wide area map is already displayed, the detailed map is displayed on a screen other than the wide area map display screen. And

  As a result, for example, as shown in FIG. 14 (a), from the state in which a highway schematic diagram is displayed on one side and a wide area map is displayed on the other side, As shown in FIG. 5B, a detailed map is displayed instead of the highway schematic screen, and the wide area map is left on the other side.

  Next, when it is determined in step S122 that the detailed map is being displayed, the process proceeds to step S124 to determine whether or not to display the interchange guide map. In this determination, if the navigation device is set in advance to display the interchange guide map at the entrance / exit of the expressway, it is determined that the interchange guide map is displayed according to the setting. When there is another instruction, it is determined that the interchange guide map is displayed.

  When it is determined in step S124 that the interchange guide map is displayed, the interchange guide map is displayed on a screen other than the detailed map display screen in step S125. As a result, as shown in FIG. 14 (c), an interchange guide map is displayed instead of the wide area map shown in FIG. 14 (b), and is easy to understand by a detailed map that is an actual road map and, for example, a three-dimensional display. By displaying the interchange guide map displayed side by side, it is possible to travel safely from the expressway to the general road.

  Further, when it is determined in step S124 that display of an interchange guide map is not necessary, for example, when the driver is used to an interchange, the process proceeds to step S126 without performing the operation of step S125.

  Thereafter, it is determined whether or not the vehicle has entered a general road (step S126). If the vehicle has not yet entered the general road and is traveling in the interchange, the process returns to step S124 to display the interchange guide map. If the interchange guide map has already been displayed, the display is continued in step S125, and if the interchange is not displayed in step S124, the process returns to step S126 until the interchange road is entered. Continue operation.

  After that, when it is detected in step S128 that the vehicle has entered the general road from the movement data of the current position in the navigation device, the divided screen display process during the general road traveling shown in FIG. At this time, as a result of the standard display processing at the time of first traveling on a general road, a wide area map and a detailed map are respectively displayed as shown in FIG.

  As described above, in the present invention, when various maps and guide maps are to be displayed when the vehicle is traveling on a general road, the other map is displayed in a state where a detailed map is displayed on one of the divided screens. When displaying various maps and guide maps on the screen, and displaying various maps and guide maps while the vehicle is driving on a highway, the other area with a wide area map displayed on one screen By displaying such various maps and guide maps on the screen of FIG. 15 as a basic display mode, as in the conventional example shown in FIG. 15 and FIG. This eliminates the need to change the screen display every time the road changes from a general road to a general road.

  That is, in the example of FIG. 15, when entering the expressway from the state of FIG. 15 (a) traveling on a general road, when trying to display a highway schematic, other than the screen displaying a wide area map Since the highway schematic diagram is displayed on the screen of (2), the display state immediately becomes the display state of (c) of the figure, and the display as shown in (b) of FIG.

  Also, from the display state as shown in FIG. 15 (c) when driving on a highway, when leaving a highway and driving on a general road, another screen is displayed on the other screen while the detailed map is always displayed. In order to display a map and a guide map, as shown in FIG. 16C, a detailed map can be displayed on one screen, and a wide area map can be displayed on the other screen as another map. Such a screen display is not performed.

  In the present invention, when displaying various maps and guide maps as described above other than the basic divided screen display as shown in FIGS. Screen display can be performed.

30 Division screen display processing unit 31 Division screen display processing unit for ordinary road traveling 32 Division screen display processing unit for expressway traveling 33 Standard display processing unit 34 Specific interruption display processing unit 35 Intersection guide map 36 Narrow street map 37 Guidance Main intersection guide map on route 38 Interchange guide map on planned highway entrance 39 Detailed map display processing unit 40 when approaching destination Standard display processing unit 41 Specific interrupt display processing unit 42 User instruction guide map 43 Junction connection guide map 44 Road network guide map 45 Detailed map 46 Detailed map for traffic jam 47 High-speed exit guide map display processing section 48 Detailed map 49 Exit interchange guide map 50 Interrupt screen selection section

Claims (5)

Image output means for dividing the monitor into two and displaying a map on each;
Split screen display processing means for performing display processing of the map output from the image output means,
In the divided screen display processing means, when the vehicle is traveling on a general road, a detailed map is displayed on one of the divided screens, and another map is displayed on the other screen. A map two-screen display device characterized by displaying a wide-area map on one screen when driving and displaying another map on the other screen.   The split screen display processing means displays a detailed map on one screen when the vehicle starts traveling on a general road, displays a wide area map on the other side, and displays one map when the vehicle starts traveling on an expressway. A map two-screen display device characterized by displaying a wide area map on a screen and displaying a highway schematic on the other screen.   In the divided screen display processing means, when the vehicle is traveling on a general road, one of an intersection guide map, a narrow street map, a main intersection guide map on the guidance route, and an interchange guide map is displayed on the other screen. The map two-screen display device according to claim 1, wherein the map two-screen display device is displayed.   The split screen display processing means displays any one of a junction guide map, a highway network guide map, a detailed map, and an interchange guide map on the other screen when the vehicle is traveling on an expressway. The map two-screen display device according to claim 1.   The split screen display processing means displays a detailed map on one screen when the vehicle exits from the expressway to the general road and approaches within a predetermined distance from the expressway exit, as in the case of driving on the general road. 2. The map two-screen display device according to claim 1, wherein another map is displayed on the other screen.

Images