JP2005321268A - Navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation system which doesn't display the meaningless same maps on the two displaying screens when approaching the destination at the time of displaying two maps on the two screens. <P>SOLUTION: The map image formation part 21 is composed of the two screen display 22 and one screen display 25. The two screen display 22 is composed of the process part 32 for display the prescribed contraction scale map on a first screen and the process part 35 for displaying the contraction scale map including the present site and the destination on a second screen. In a same contraction scale displays and detection parts 38, on the first screen and second screen the same contraction maps are displayed as the present site approaches the destination. By detecting the destination appears in the first screen, the action is switched to the one screen display part 25 for displaying the map including the present site and the destination on whole one screen. When arriving at the destination and the new destination is set, the prescribed two screens are displayed on the basis of the set data stored in a two screen map displaying and setting record part 37. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a navigation device mounted on a vehicle or the like, and in particular, when displaying a two-screen map of a wide area map on which a current location and a destination are displayed on a monitor and a detailed map that scrolls with the movement of the current location, the current location is the destination. The present invention relates to a navigation device that can automatically display a one-screen map when map screens of the same scale are displayed on both screens.

  In a general navigation apparatus mounted on a vehicle or the like, a map / information data storage such as a CD-ROM, a DVD-ROM, a hard disk, etc., which stores map data for drawing a map and facility information data for searching for a facility, etc. A vehicle, a data capture device that captures data from the map / information data storage medium, a monitor that displays a map, etc., a self-contained navigation device that uses a GPS receiver, a mileage sensor, a gyroscope, etc. It has a vehicle position detection device that detects the position and the direction of travel, fetches map data including the current position of the vehicle from a map / information data storage medium, and monitors a map image around the vehicle position based on this map data The vehicle position mark is superimposed on the monitor screen, and the map image is scrolled as the vehicle moves. Le displayed, or moving the fixed vehicle position mark a map image on a screen, so that seen whether the vehicle is traveling where the current at a glance.

  Map data stored in a map / information data storage medium such as a CD-ROM, DVD-ROM, or hard disk is divided into longitude and latitude widths of appropriate sizes according to various scale levels. A road or the like is stored as a coordinate set of nodes expressed by longitude and latitude. 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 for allowing a user to easily travel on a road toward a desired destination or waypoint (hereinafter referred to as “destination”) without making a mistake. Yes. According to this route guidance function, a destination is set by various means, and an appropriate route is calculated and presented in consideration of various conditions among routes connecting these points from the departure point to the destination. It has become. 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. In this way, the user can be guided to the destination.

  When displaying the map screen in the navigation device as described above, various devices have been devised in particular to display the route from the current location to the destination in an easy-to-understand manner. For example, the travel position for displaying the vehicle position on the display device together with the map At the time of display, it has been proposed to automatically change the scale of the display map so that the current position of the vehicle and the destination can be displayed on the same screen (Patent Document 1).

Furthermore, in recent navigation devices, the monitor screen is enlarged and widened, one monitor screen is divided into two screens, a wide area map is displayed on the first screen on one side, and the current location is displayed on the second screen on the other side. Various information can be displayed on the two screens in various manners such as displaying a detailed map of the periphery.
Japanese Patent Laid-Open No. 7-103777

  In order to display the route from the current location to the destination in an easy-to-understand manner as described above, the map is automatically changed to a scale map that allows the location of the vehicle and the destination to be displayed on the same screen. In order to display this on the same screen, especially when the current location and the destination are at a long distance, the map must be selected as a very wide scale map. In the state displayed on the entire screen, it is difficult for the user to know the road state, the place name, and the facility state in the vicinity of the current vehicle position, and the map display must be difficult to see.

  Therefore, when the monitor screen as described above is divided into two screens, a wide area map is displayed on the first screen on one side and a detailed map around the current location is displayed on the second screen on the other side, the wide area map display side is The scale of the vehicle and the destination can be displayed on the same screen, and the map is displayed while changing the map to an appropriate scale as the vehicle moves. On the other side, a detailed map of the scale around the current location is displayed. It is possible to display.

  When such a two-screen display of a map is performed, the travel route from the current location to the destination can be understood at a glance, and the road conditions around the current location or the status of surrounding facilities should be switched to the screen in particular. Therefore, it is possible to provide an easy-to-use navigation device that can be immediately known and can obtain detailed information around the current location even when the current location is far away from the destination.

  However, when the two-screen map is displayed, if the vehicle gradually approaches the destination due to the movement of the vehicle, a detailed map of a predetermined scale set in advance or a scale set by the user is displayed on one screen. When the destination is displayed on the screen, the same map as the map screen on the other side is displayed.

  Therefore, when the map is displayed on the two screens, the map with the same scale is displayed on the two screens when approaching the destination, and a meaningless two-screen display is performed. The main object of the present invention is to automatically display an appropriate map screen without performing such meaningless two-screen display.

  In order to solve the above problems, the navigation device according to the present invention displays a first map screen for displaying a predetermined scale map around the current location and a second map screen for displaying a map at a scale containing the current location and the destination. Screen map display means, same-scale map display detection means for detecting that the map of the first map screen and the map of the second screen are the same scale, and the first map screen by the same-scale map display detection means When it is detected that the map of the same scale is displayed on the second map screen, a one-screen map display means for displaying the map of the scale where the current location and the destination are entered on one screen is provided. .

  Further, another navigation device according to the present invention comprises a two-screen map display setting recording means for recording data for setting display formats of the first map screen and the second map screen, and when setting a new destination, A predetermined two-screen display is performed based on the data of the two-screen map display setting recording means.

  Still another navigation apparatus according to the present invention is characterized in that the same scale map display detection means is means for detecting that a destination is displayed on the first map screen.

  Further, another navigation device according to the present invention displays a map in a map display format different from the first map screen and the second map screen when the two-screen map is displayed, and when switching the display to the one-screen map display, A map is displayed by selecting any map display format.

  Since the present invention is configured as described above, when displaying a map for performing two-screen display, even when approaching the destination, the two-screen map display that does not mean that the same map is displayed on both screens is not performed. be able to.

  The purpose is to automatically display an appropriate map screen without displaying a meaningless two-screen display when the map is displayed in two screens and the same map is displayed on both screens when approaching the destination. A two-map map display means for displaying a first map screen for displaying a predetermined scale map around the current location, and a second map screen for displaying a map at a scale for entering the current location and the destination, respectively; The same scale map display detection means for detecting that the map and the map on the second screen are the same scale, and the first map screen and the second map screen display the same scale map by the same scale map display detection means. This is realized by providing a one-screen map display means for displaying a map of a scale where the current location and the destination are in one screen when it is detected.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a functional block diagram of a navigation apparatus mainly showing a map image forming function according to the present invention, and shows various modes of the present invention. In addition, each function part in the figure can be paraphrased as means for performing each function.

  The navigation apparatus shown in FIG. 1 includes a ROM that records software for comprehensively performing various predetermined functions in the system control unit 20, a CPU for processing the software, and the like, as in the conventional device. Control of each functional unit connected thereto is performed. In the illustrated navigation apparatus, a vehicle position detection unit 3 is connected to the system control unit 20 and position data of the GPS receiver 1 is input, and a travel distance / orientation detection unit using a vehicle speed sensor or an angle sensor as required. By inputting the movement data of the vehicle from No. 2, the current position of the vehicle is accurately detected.

  In the instruction signal input unit 6, an instruction signal from a user such as a remote controller is input in the navigation device, and an instruction to change the scale of the display map, which will be described in detail later, can be input. Further, a signal of the voice recognition unit 5 that inputs a user instruction signal by a process of recognizing the user's voice as necessary is also input to the instruction signal input unit 6.

  The data fetching unit 8 fetches necessary map data and facility information from a map / information data recording medium 7 such as a DVD-ROM, CD-ROM, or hard disk, and the data recording medium is like a hard disk. When data can be easily written, data can be input to the data recording medium so that data imported from outside or data processed by other functional units can be read and used later. I have to. In particular, in the present invention, a map of an instructed point is output at a predetermined scale, and data such as right / left turn guidance can be output as necessary.

  In the guidance route calculation unit 9, the current location of the vehicle detected by the vehicle position detection unit 3 is fetched, and the phone number is further input by scrolling the map by operating the cursor displayed on the screen or by inputting an address. The destination set by various methods such as the above is taken in, and the optimum guide route is calculated and presented under various conditions such as the shortest required time, the shortest distance, and the general road priority. In addition, the guidance route guidance unit 10 performs guidance so that the vehicle can safely reach the destination according to the guidance route calculated by the guidance route calculation unit 9 and selected and designated by the user. In addition, an audio output unit 12 that outputs various sounds including various guidance from the speaker 12 is provided, and an image output unit 14 that displays various information in addition to a map as described later is provided on the monitor 13.

  In the map image forming unit 21 that performs the main function of the present invention in FIG. 1, the monitor 13 is divided into two screens, and a two-screen map display unit 22 that can display a map screen on each screen, and two monitors 13. And a one-screen map display unit 25 that displays one map on the entire screen without dividing the screen. Whether to operate the two-screen map display unit 22 or the one-screen map display unit 25 is automatically determined by the user's instruction by the 1 · 2 screen display selection unit 36 or as described later. So that you can choose.

  The two-screen map display unit 22 includes a first-screen map display unit 23 that displays a map of the first screen, which is one of the two screens, and a map display of the second screen, which is the other-side screen. A second screen map display unit 24 is provided.

  In the illustrated embodiment, in the first screen map display unit 23, the current location data of the vehicle of the vehicle position detection unit 3 is captured by the current location capture unit 30, and the display scale instruction capture unit 31 receives from the instruction signal input unit 6. A user-specified display scale is taken in, or a preset scale is taken in from a memory or the like. In the first-in-screen display processing unit 32 for specifying the current location scale map, an appropriate map is read from the map / information data recording medium 7 based on the data of the current location capturing unit 30 and the scale data captured by the display scale instruction capturing unit 31. And processing for fetching the information data and displaying it in the first screen.

  The second screen map display unit 24 includes a current location capturing unit 33 that operates in the same manner as the current location capturing unit 30 in the first screen map display unit 23, and the destination capturing unit 34 specifies a user. The destination data is taken from a memory or the like. In the second screen display processing unit 35 on the current location / destination scale map, the current location and the destination are determined based on the data of the current location capturing unit 33 and the destination data captured by the destination capturing unit 34. A scale of a map that can be displayed on the same screen of two screens is calculated, a predetermined map is fetched from the map / information data recording medium 7 and displayed on the second screen.

  Data such as a display scale instruction value and a display format in the first screen map display unit 23 and data such as a map display format in the second screen map display unit 24 are recorded in a two-screen map display setting recording unit 37. Then, when a new map display process is started thereafter, it is read as an initial screen setting value, and when there is no change in the instruction from the user thereafter, the display process according to the previous setting can be performed. Yes.

  The one-screen map display unit 25 performs processing for displaying one map on the entire screen without dividing the monitor screen into two screens as described above. In a state in which a one-screen map normal display unit 26 for performing a one-screen map display process similar to the process and an instruction to perform a two-screen map display in the two-screen map display unit 24 as described in detail later are given. And a two-screen display instructing one-screen map display processing unit 27 for switching to a one-screen map display when a map of the same scale is displayed. As a result of the operation, a predetermined one-screen map display is performed.

  The one-screen map display processing unit 27 during the two-screen display instruction includes a current location capturing unit 41 and a destination capturing unit 42, similar to the second screen map display unit 24 in the two-screen map display unit 22. In addition, a current / destination scaled map 1-screen display processing unit 40 that performs substantially the same process as the current-location / destination-scaled map second-screen display processing unit 32 in the second screen map display unit 24 is provided. Yes. The current location / destination scaled map 1 in-screen display processing unit 40 is a process for displaying a desired map in the second screen obtained by dividing the screen into two in the current location / destination scaled map 1st screen display processing unit. However, it is different in that processing for displaying such a map on the entire screen is performed.

  In the embodiment of FIG. 1, in order to express the functions of the present invention in an easy-to-understand manner, display processing of a current location and destination scale map is provided for each of the two-screen map display unit 22 and the one-screen map display unit 25. However, it is possible to obtain various kinds of information such as temporarily changing the function of the display screen processing unit 35 in the second scale display map with the current location / destination and displaying the map on the entire screen. A similar function can be performed by a technique.

  In the same scale map display detection unit 38, the map of the first screen displayed on the first screen map display unit 23 in the two-screen map display unit 22 and the map scale of the second screen displayed on the second screen map display unit 24 are displayed. When both maps are maps of the same scale, a signal to that effect is output. As described above, when detecting that the map on the first screen and the map on the second screen are the same scale, the first screen can be used in addition to actually comparing the scales of the maps displayed on both screens. The same can be done by detecting whether or not the destination is included in the map displayed on the map display unit 23.

  That is, the display map data obtained by the processing in the first-screen display processing unit 32 in the first-screen map display unit 23 of the two-screen map display unit 22 and the destination map of the second-screen map display unit 24. It is possible to detect that the scales of both map screens are the same by comparing the destination data captured by the loading unit 31 and detecting that the destination is included in the map displayed on the first screen.

  When the same scale map display detection unit 38 detects that the same scale map is displayed on the two screens as described above, a signal is output to the 1.2 screen display selection unit 36 to select the 1-2 screen display selection. The unit 36 selects the operation of the one-screen map display unit 25 from the state in which the operation of the two-screen map display unit 22 is selected when the signal is input, and also displays the one-screen map display processing unit 27 during the two-screen display instruction. Is instructed to perform predetermined processing. In response to this instruction, the one-screen map display processing unit 27 during the two-screen display instruction performs the predetermined processing in each function unit, and displays a map including the current location and the destination on the entire monitor screen as one screen.

  In this invention comprised from the above functional blocks, it can operate | move in order according to the operation | movement flow shown, for example in FIG. The operation flow shown in FIG. 2 will be described below with reference to the functional block diagram of FIG. 1 and the monitor display example of FIG. In the map screen display process shown in FIG. 2, particularly the two-screen display of the map according to the present invention and the one-screen display process under a predetermined condition, it is first determined whether or not the destination has been set by the user ( Step S1). That is, by setting the destination by the user, a guidance route from the current location is set as a normal navigation device process, and the guidance route is displayed on at least one screen divided into two screens. To detect the destination setting. If it is determined that the destination has not yet been set, the subsequent processing is not performed until the destination is set.

  When it is determined in step S1 that the destination has been set, display format data and the like are read from the two-screen map display setting recording unit in order to perform a predetermined two-screen map display. This operation is performed by reading the display setting data recorded in the two-screen map display setting recording unit 37 in the two-screen map display unit 22. Although not shown in this operation flow, the two-screen map display setting recording unit 37 appropriately stores initial setting data, user instruction data, and the like.

  Next, in step S3, a process of displaying a wide area map where the current location and the destination are entered on one screen and a detailed map near the current location is displayed on the other screen. In these processes, the 1 · 2 screen display selection unit 36 selects the display process by the 2 screen map display unit 22 when the destination is set as described above, and the first screen map display unit 23 enters the current location. The designated scale map is displayed on the first screen, and the second screen map display unit 24 performs a process of displaying a map of a scale on which the current location and the destination are entered in the second screen. As a result of such processing, for example, as shown in FIG. 3A, a detailed map in the vicinity of the current location A is displayed in the head-up format together with the guide route G on the left screen as the first screen, and the second screen is displayed as the second screen. On the right screen, a map of the scale in which the current location A and the destination B enter is displayed together with the guidance route G in a head-up format. The map on each screen can be displayed in various other formats.

  After that, since the current location moves with the movement of the vehicle, the scale of the wide area map is gradually changed to the detail side and displayed along with the current location movement, and the detailed map screen is displayed at the same scale unless there is a change in scale by the user. A display process for changing the display range is performed with the movement of.

  Next, it is determined whether or not the scales of the map on the first screen and the map on the second screen are the same (step S5). That is, when the current location gradually approaches the destination while performing the above-mentioned screen display processing in the two-screen map display by the movement of the current location, the first screen is finally obtained as shown in FIG. 3B, for example. And the map scale on the second screen are the same, and the same screen is displayed.

  When determining whether or not the map scales of the first screen and the second screen are the same, for example, as shown in FIG. 3B, the destination is included in the detailed map of the first screen displaying the current location and surroundings. It can also be detected by displaying B. The determination as to whether or not the map scales of the first screen and the second screen are the same is made by the operation of the same scale map display detection unit 38 in FIG.

  When it is determined in step S5 that the map scales of the first screen and the second screen are not the same, the operation of step S4 and the determination of step S5 are repeated. Here, as shown in FIG. 3 (b), when it is determined that the map scales of the first screen and the second screen are the same, a process for displaying a map containing the current location and the destination on the entire screen is performed. (Step S6).

  In this process, when the same scale map display detection unit 38 of FIG. 1 detects that the destination is displayed in the map of the first screen, the signal is output to the 1 · 2 screen display selection unit 36 and the 2 screens are displayed. This is performed by switching the operation of the map display unit 22 to the operation of the one-screen map display unit 25. In particular, when the two-screen display instruction in the one-screen map display unit 25 is operated, the one-screen map display processing unit 27 operates to display a reduced-scale map where the current location and the destination enter, for example, as shown in FIG. Processing to display within one screen of the entire monitor screen is performed. In the one-screen display processing, when the first screen and the second screen are displayed in different formats such as head-up and north-up, for example, one of the preset display formats is selected. Display.

  Then, if the current location moves with the movement of the vehicle, and there is a narrow street map with a smaller scale than the detailed map currently displayed, the current location and the destination are within a single screen. The map is changed to and displayed (step S7). When there is no more detailed map than that, a map in an appropriate range in the vicinity of the current location is displayed within the scale range.

  Based on such display, it is determined whether or not the vehicle has subsequently arrived at the destination (step S8). If the vehicle has not yet arrived, the process returns to step S7 to continue displaying the map where the current location and the destination enter one screen. Thereafter, when it is determined in step S7 that the vehicle has arrived at the destination, the process returns to step S1, and it is further determined whether or not the next destination has been set. This operation is repeated when the next destination is not set, but when it is determined that the next destination is set after that, the two-screen map display format recording unit is read in the same manner as the above processing (step S2), and thereafter A two-screen display process is automatically performed in a preset manner.

  In the above-described embodiment, an example is shown in which the specified scale map with the current location is displayed on the first screen, and the scale map with the current location and the destination is displayed on the second screen. However, they may be displayed on opposite sides. The map display of the first screen and the second screen is not limited to the head-up type map display as described above, but the second screen is displayed in the north-up map, or the first screen is displayed in 3D. It may be displayed in various ways, and in any case, when the destination is displayed on the screen displaying the current location specified scale map, the display is switched to the one-screen display as described above. To.

  The navigation device as described above according to the present invention can be applied to a navigation device that displays on a portable information terminal, a personal computer, or the like, in addition to being applied to the vehicle navigation device as described above.

It is a block diagram of the Example of this invention. It is a flowchart of the Example of this invention. It is an example of a monitor screen display of the Example of this invention.

Explanation of symbols

21 Map image forming part
22 Two-screen map display section 23 First-screen map display section
24 2nd screen map display part 25 1st screen map display part
26 One-screen map normal display section 27 Two-screen display instruction one-screen map display processing section 30 Current location capture section
31 Display scale instruction capture unit 32 Current-area-designated scale map first-screen display processing section 33 Current-location capture section 34 Destination-capture section 35 Current-location / destination-scale map second-screen display processing section 36 1.2 Screen display selection unit 37 Two-screen map display setting recording unit 38 Same-scale map display detection unit 40 Current-location / destination-scale map one-screen display processing unit 41 Current location capturing unit 42 Destination capturing unit

Claims (4)

A two-screen map display means for displaying a first map screen for displaying a predetermined scale map around the current location, and a second map screen for displaying a map of a scale containing the current location and the destination;
The same scale map display detecting means for detecting that the map of the first map screen and the map of the second screen are the same scale;
When it is detected by the same scale map display detection means that the first map screen and the second map screen display the same scale map, a map of the scale where the current location and the destination are entered is displayed on one screen. A navigation device comprising screen map display means. A two-screen map display setting recording means for recording data for setting display formats of the first map screen and the second map screen;
2. The navigation apparatus according to claim 1, wherein when a new destination is set, a predetermined two-screen display is performed based on data of the two-screen map display setting recording means.   The navigation apparatus according to claim 1, wherein the same scale map display detecting means is means for detecting that a destination is displayed on the first map screen. When the two-screen map is displayed, the map is displayed in a different map display format from the first map screen and the second map screen. The navigation device according to claim 1, wherein the navigation device displays.

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