JP2007304112A - Map display device, map display method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To recognize a correspondence relation between a present story and other stories. <P>SOLUTION: The device comprises an information acquisition processing means to acquire map data for every story, a point setting processing means to establish a predetermined point of map screen as a setting point, a story judgement processing means to determine whether a plurality of stories exist in the setting point, a display processing means 93 to display map of selected story. The display processing means 93 indicates that the plurality of stories exist in the setting point, when it is determined that the plurality of stories exist in the setting point by the story determination processing means. It indicates that the plurality of stories exist in the setting point, an operator can recognize that the plurality of stories exist in the setting point. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a map display device, a map display method, and a program.

  Conventionally, in a navigation device, for example, the current position, that is, the current location is detected by GPS (Global Positioning System), map data is read from a data recording unit, a map screen is formed on a display of a display unit, A map of the current location and the surrounding area is displayed on the map screen. Therefore, the operator can recognize not only the current location but also the surrounding situation.

  For example, when a navigation device is mounted on a PDA (personal personal digital assistant) as a mobile terminal, the user can walk to the destination based on the current location detected by the navigation device while holding the PDA. it can. In addition, when the navigation device is mounted on the vehicle, the vehicle can travel to the destination or the route from the current location to the destination can be searched based on the current location detected by the navigation device.

  However, in the conventional navigation device, only a map representing a road on the ground surface is displayed on the map screen, and for example, a map representing an underground road cannot be displayed.

  That is, since roads are usually formed along the ground surface, it is sufficient to display a map representing roads on the ground surface on the map screen. However, depending on the region, one or more layers (the first floor above the ground) The road may be formed over two floors above the ground, three floors above the ground, or one or a plurality of levels underground (the first floor underground, the second floor underground, etc.).

  However, it is not possible to recognize the correspondence between the current level and other levels.

  An object of the present invention is to provide a map display device, a map display method, and a program capable of resolving the problems of the conventional navigation device and recognizing the correspondence between the current level and other levels. To do.

  For this purpose, in the map display device of the present invention, information acquisition processing means for acquiring map data for each layer, point setting processing means for setting a predetermined point on the map screen as a setting point, and the setting point Hierarchy determination processing means for determining whether or not a plurality of hierarchies exist, and display processing means for displaying a map of the selected hierarchy.

  The display processing means displays that there are a plurality of hierarchies at the set spot when the hierarchy judging process means determines that there are a plurality of hierarchies at the set spot.

  According to the present invention, when a predetermined point on the map screen is set as a set point and a plurality of layers exist at the set point, it is displayed that there are a plurality of layers at the set point. Can easily recognize that a plurality of hierarchies exist at the set point. Therefore, it is possible to recognize the correspondence relationship between the current hierarchy and another hierarchy.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this case, a navigation device mounted on a PDA (personal personal digital assistant) as a mobile terminal will be described, but the present invention can also be applied to a navigation device mounted on a vehicle.

  FIG. 1 is a functional block diagram of a navigation system according to an embodiment of the present invention.

  In the figure, 91 is second information acquisition processing means for acquiring navigation information for each hierarchy, 92 is hierarchy selection processing means for selecting a predetermined hierarchy of each hierarchy, and 93 is navigation information of the selected hierarchy. And a display processing means for displaying a map of the selected hierarchy together with the reference point.

  FIG. 2 is a conceptual diagram of the navigation system in the embodiment of the present invention.

  In the figure, 61 is a personal computer as a user terminal, 62 is an information center as an information provider, and the personal computer 61 and the information center 62 are connected via a network 43. Reference numeral 14 denotes a navigation device mounted on the PDA. The navigation device 14 includes a navigation processing unit 17, a data recording unit 16, and the like. The navigation device 14, the network 43, the personal computer 61, the information center 62, etc. constitute a navigation system.

  The personal computer 61 includes a CPU 71 as an arithmetic device and a control device, a display unit 72 as a notification device for notifying an operator of various information, an operation unit 73, a recording device 74, a communication unit 75, and the like. In the present embodiment, the CPU 71 is used as the arithmetic device and the control device, but an MPU or the like can be used instead of the CPU 71. The display unit 72 may be a display such as a CRT display, a liquid crystal display, or a plasma display. In the present embodiment, the display unit 72 is used as a notification device. However, instead of the display unit 72, a voice display device that notifies various information to the operator by voice may be used. it can.

  As the operation unit 73, a keyboard, a mouse, or the like can be used, and a touch panel formed on the display can also be used. A bar code reader, a light pen, a remote control device for remote operation, a joystick, or the like can also be used. In the touch panel, an operation area such as various keys, switches, and buttons is formed on the display, and input can be performed by touching (pressing) the operation area.

  The recording device 74 includes not only an internal storage device (not shown) such as a RAM, a ROM, and a flash memory, but also an external storage device such as a hard disk and a memory card. The hard disk constitutes a first recording medium, and the memory card constitutes a second recording medium. Further, as the external storage device, in addition to a hard disk and a memory card, a magnetic tape, a magnetic drum, a CD-ROM, a CD-R, an MD, a DVD, an optical disk, an MO, an IC card, an optical card, and the like may be provided. it can. In order to use the external storage device, the recording device 74 is provided with a reading device for reading data recorded in the external storage device and a writing device for recording data.

  In the present embodiment, a personal computer 61 is used as the user terminal, but instead of the personal computer 61, such as an electronic notebook, a mobile phone, a mobile terminal, a video phone, a game machine, A device that can be connected to the network 43 and can perform two-way communication can also be used. In this embodiment, a PDA is used as a mobile terminal. However, instead of the PDA, a mobile phone such as an electronic notebook, a mobile phone, a mobile terminal, a videophone, or a game machine is used. It is also possible to use one that can perform two-way communication.

  The information center 62 includes a server 63, a navigation data database (DB) 64, which is connected to the server 63 and records navigation data. The navigation data database 64 includes a map data file in which map data for displaying a map is recorded, a search data file in which search data for searching for a route is recorded, and a facility in which facility data relating to various facilities is recorded. It consists of data files. A data file such as a road data file, an intersection data file, and a node data file is formed in the map data file, and road data representing information on each road (road link) is stored in the road data file. Intersection data representing information is recorded in the node data file, and node data representing information of set node points along each road is recorded. In addition, navigation data is comprised in map data, search data, facility data, etc.

  As the road data, the width, slope, cant, bank, road surface state, road lane number, location where the number of lanes decreases, location where the width becomes narrower, level crossing, etc. are represented as the road data. The data represents the radius of curvature, intersections, T-junctions, corner entrances and exits for the corners, the data representing the downhill roads, uphill roads, etc. for the road attributes, the national roads, prefectural roads, detailed roads In addition to ordinary roads such as streets, data representing expressways and toll roads such as expressways, city expressways, and toll roads are recorded. In addition, for highway / toll roads, data indicating the entrance and exit attachment roads (rampways), toll gates, etc. are recorded.

  In addition, since roads are usually formed along the ground surface, it is sufficient to display a map representing roads on the ground surface on the map screen. However, depending on the region, one or a plurality of hierarchies (1 floor above ground) The road may be formed over two floors above the ground, three floors above the ground, or one or a plurality of levels underground (the first floor underground, the second floor underground, etc.). For example, not only roads are formed on the surface of the earth, but roads are also formed on the second floor, and roads such as underground shopping streets, underground parking lots, and underground passages are formed underground.

  Therefore, when a road is formed over a plurality of layers, the map data is recorded as layer data for each layer. The hierarchy data for each hierarchy is created so that each point on the map is placed at a corresponding position when the map is displayed on the map screen. In addition, the hierarchical data includes time data for each level, for example, business hours for each level of the underground shopping street or a predetermined area of the underground shopping street, business days for each level of the underground parking lot, business hours, and the like. It is also possible to have business days, business hours, etc. for each facility in the underground shopping mall as time data.

  Further, as the node data, actual road branch points (including intersections, T-junctions, etc.), node point coordinates (positions) set for each road according to a radius of curvature, etc. Data representing node point links connecting the node points, the height (altitude) of each node point, and the like are recorded.

  Further, as the facility data, data representing facilities such as hotels, gas stations, parking lots, and tourist facilities in each region is recorded. In the navigation data database 64, voice output data for outputting predetermined information by voice in the navigation device 14 is also recorded.

  By the way, the information center 62 is a traffic information transmission center as a traffic information provider among information providers, for example, a congestion information transmitted from a VICS (Vehicle Information and Communication System) center (not shown). In addition to traffic information consisting of information such as regulation information, parking lot information, traffic accident information, and service area congestion, general information such as news and weather forecasts can be received, Traffic information and general information are sent as they are to the personal computer 61 via the network 43 or recorded in the navigation data database 64. For this purpose, a statistical data file is arranged in the navigation data database 64, and past traffic information and general information are recorded in time series as statistical data, and predetermined processing is performed on the past traffic information and general information. Is applied, and processed data of traffic information and general information is recorded as navigation data. In addition, when processing traffic information and general information, the said general information etc. are referred as needed.

  The information center 62 may be any one of an individual, a company, a group, a local government, a government related organization, and the like. Then, the information center 62 creates the navigation data itself or purchases it from another information provider and supplies it to the personal computer 61.

  The network 43 includes a LAN (Local Area Network), a WAN (Wide Area Network), an intranet, a cellular phone line network, a telephone line network, a public communication line network, a dedicated communication line network, a communication line network such as the Internet, etc. Various communication means consisting of can be used. As the network 43, a communication means using CS broadcasting by a broadcasting satellite, BS broadcasting, terrestrial digital television broadcasting, FM multiplex broadcasting, or the like can be used. Further, as the network 43, communication means such as a non-stop automatic toll payment system (ETC) and a boundary communication system (DSRC) used in an intelligent transportation system (ITS) can be used.

  The personal computer 61, the server 63, the navigation processing unit 17, and the like function as a computer based on a predetermined program, data, and the like, either individually or in combination of two or more.

  Next, the navigation device 14 having the above configuration will be described.

  FIG. 3 is a block diagram of the navigation device according to the embodiment of the present invention.

  In the figure, reference numeral 14 denotes a navigation device. The navigation device 14 performs various arithmetic processing such as navigation processing, map data, and a route when a route is searched based on input information. A data recording unit 16 in which data and the like are recorded, an input unit 34 as an operation unit, a display unit 35 as a first notification unit, an audio output unit 37 as a second notification unit, a communication unit 38, first, first External slots 44, 45, etc. as two slots are provided. The data recording unit 16 is constituted by a flash memory and is disposed as an internal storage device.

  The external slots 44 and 45 constitute an interface, and by setting a GPS card 46 as a current location detection unit in the external slot 44, the current location can be detected by the GPS card 46, and communication as a communication unit By setting the card 47 in the external slot 44, the network 43 (FIG. 2) and the navigation device 14 can be connected by the communication card 47, and by setting the memory card 48 in the external slot 45, the memory card 48 Various programs, data, and the like recorded in can be read out.

  The GPS card 46 incorporates a GPS sensor (not shown), and the GPS sensor detects the current location on the earth by receiving radio waves generated by an artificial satellite.

  The navigation processing unit 17 includes an arithmetic device that controls the entire navigation device 14 and a CPU 31 as a control device, a RAM 32 that is used as a working memory when the CPU 31 performs various arithmetic processes, and a control program. In addition, a ROM 33 in which various programs for searching for a route to the destination, route guidance, determination of a specific section, and the like are recorded is provided as an internal storage device. The navigation processing unit 17 includes the input unit 34, a display The unit 35, the audio input unit 36, the audio output unit 37, and the communication unit 38 are connected. A semiconductor memory, a magnetic core, or the like is used as the RAM 32, ROM 33, data recording unit 16, or the like. An MPU or the like can be used instead of the CPU 31 as the arithmetic device and the control device.

  The data recording unit 16 uses a flash memory, but a hard disk (not shown) may be provided as an external storage device. In that case, a reading device for reading data recorded on the hard disk and a writing device for recording data on the hard disk are provided. Instead of the hard disk, a flexible disk, CD-ROM, CD-R, MD, DVD, optical disk, MO, IC card, optical card, memory card, etc. can be arranged as an external storage device.

  In the present embodiment, various programs are recorded in the ROM 33 and various data are recorded in the data recording unit 16, but the programs, data, and the like are recorded in the same external storage device. You can also. In this case, for example, the program, data, and the like can be read from the external storage device and written to the data recording unit 16. Therefore, the program, data, etc. can be updated by exchanging the external storage device.

  The input unit 34 is used to correct the current location, input a departure point and destination, and operate the communication unit 38. The input unit 34 includes various operation switches (not shown) such as various keys, switches, and buttons. Consists of a stylus pen. The input unit 34 includes operation switches such as various keys, switches, and buttons displayed as images on a screen formed on the display, and performs input by touching the operation switches with the line top pen. be able to.

  As the input unit 34, a keyboard, a mouse, a barcode reader, a remote control device for remote operation, a light pen, a joystick, or the like may be used, or a microphone or the like for inputting necessary information by voice may be used. it can.

  Various screens formed on the display include operation guidance, operation menus, key guidance, a searched route from the current location to the destination, that is, a searched route, guidance information along the searched route, FM Multiple broadcast programs and the like are displayed. As the display unit 35, a display such as a CRT display, a liquid crystal display, or a plasma display can be used.

  Furthermore, the voice output unit 37 includes a voice synthesizer and a speaker (not shown), and the search route, guidance information, and the like are output from the voice output unit 37 as voice synthesized by the voice synthesizer, for example. In addition to the voice synthesized by the voice synthesizer, various sounds, various guidance information recorded in advance on a tape, a memory, and the like can be output.

  The communication unit 38 is an external device for wireless communication for connecting the navigation device 14 and the personal computer 61 via the wireless LAN, or connecting the navigation device 14 and the information center 62 via the network 43. An external communication unit 50 for wired communication for connecting the communication unit 49 and the navigation device 14 and the personal computer 61 via a serial connector, a cable, or the like is provided. The external communication unit 49 receives traffic information including information such as traffic congestion information, regulation information, parking lot information, traffic accident information, service area congestion, etc. transmitted from the VICS center, etc., news, Information such as weather forecasts can be received as FM multiplexed information.

  By the way, in the navigation system having the above-described configuration, when an operator operates the operation unit 73 of the personal computer 61 to select and input a predetermined area from which map data is to be acquired, for example, map data (not shown) of the CPU 71 is displayed. The request processing means performs map data request processing and transmits a predetermined request signal to the information center 62.

  When the request signal is received at the information center 62, the first information acquisition processing unit (not shown) of the server 63 performs the first information acquisition processing, refers to the map data file of the navigation data database 64, and Read and acquire the map data of the selected area. Subsequently, a map data transmission processing unit (not shown) of the server 63 performs a map data transmission process and transmits the map data to the personal computer 61.

  When the map data is transmitted, the first recording processing unit (not shown) of the CPU 71 performs the first recording processing and downloads the map data to the hard disk of the recording device 74. Subsequently, when the operator sets the memory card 48 in the recording device 74 and operates the operation unit 73 in a predetermined procedure, the first recording processing means stores the downloaded map data in the memory card 48. make a copy.

  Next, when the operator sets the memory card 48 in the external slot 45 of the navigation device 14, a second recording processing unit (not shown) of the CPU 31 performs a second recording process, and the map data is stored in the data recording unit. 16 is further copied.

  In the navigation system having the above-described configuration, for example, when an operator operates the operation unit 73 of the personal computer 61 to input a departure point and a destination, a route is searched for in the information center 62, and the search result is stored in the personal computer 61. It is supposed to be sent.

  For this purpose, when the operator operates the operation unit 73 of the personal computer 61 and inputs a departure place and a destination, a search condition setting processing unit (not shown) of the CPU 71 performs a search condition setting process to determine the departure place and the destination. The search condition is set, and the search condition is transmitted to the information center 62.

  When the search condition is received at the information center 62, the first information acquisition processing means reads the search data with reference to the search data file in the navigation data database 64, and information necessary for searching for the route. To get. The first information acquisition processing means acquires the information by referring to the statistical data file and reading the statistical data based on the traffic information or reading the traffic information transmitted from the VICS center. You can also

  Subsequently, search processing means (not shown) of the server 63 performs search processing, and searches for a route based on the search data, traffic information, statistical data, and the like according to the search conditions. Then, when the route is searched by the search processing means, route guidance data transmission processing means (not shown) of the server 63 performs route guidance data transmission processing to obtain route data representing the searched route and a map around the searched route. Map data to be represented, voice output data for guiding the searched route by the voice output unit 37, and the like are transmitted to the personal computer 61 as route guide data.

  The route data includes road data (road attributes, etc.) constituting the searched route, and the map data includes mesh information of a mesh including the searched route and a mesh adjacent to the mesh. The voice output data can be transmitted from the information center 62 to the personal computer 61. However, the voice output data can be recorded in advance in the data recording unit 16 of the navigation device 14, and in this case, route guidance is provided. There is no need to send it as data.

  When the route guidance data is transmitted, the first recording processing means of the CPU 71 downloads the route guidance data to the hard disk of the recording device 74. Subsequently, when the operator sets the memory card 48 in the recording device 74 and operates the operation unit 73 according to a predetermined procedure, the first recording processing unit stores the downloaded route guidance data in the memory card 48. Copy to.

  Next, when the operator sets the memory card 48 in the external slot 45 of the navigation device 14, the second recording processing means of the CPU 31 performs the second recording processing, and the route guidance data is stored in the data recording unit 16. Copy further.

  Next, the operation of the navigation device 14 will be described.

  FIG. 4 is a flowchart showing the operation of the navigation device in the embodiment of the present invention, FIG. 5 is a first diagram showing an example of a map screen in the embodiment of the present invention, and FIG. 6 is a map in the embodiment of the present invention. The 2nd figure which shows the example of a screen, FIG. 7 is the 3rd figure which shows the example of the map screen in embodiment of this invention.

  5 to 7, 51 is a PDA on which the navigation device 14 (FIG. 3) is mounted, 52 is a display of the display unit 35, a map screen 53 is formed on the display 52, and the current location Pp and the map screen 53 are displayed. A map of the surrounding area is displayed. Reference numeral 54 denotes a stylus pen for performing predetermined input, k1 is a cursor key, and k2 to k5 are keys for selecting functions. In this case, the input unit 34 is configured by the stylus pen 54, the cursor key k1, and the keys k2 to k5.

  First, when a power switch (not shown) is turned on, the navigation device 14 is activated, and the current location Pp is detected by the GPS card 46. Then, the second information acquisition processing unit 91 (FIG. 1) of the CPU 31 performs the second information acquisition processing, and obtains the ground first floor data as the first hierarchical data of the map data from the data recording unit 16. The display processing means 93 of the CPU 31 forms a map screen 53 on the display 52, displays the current location Pp and the cursor on the map screen 53 and displays them according to the ground floor data shown in FIG. A map around the first floor is displayed. Therefore, the operator can recognize not only the current location Pp but also the surrounding situation.

  The map screen 53 includes a map area AR1 for displaying the current location Pp and surrounding maps in the main part, and a mode display area AR2 for displaying the display mode in the lower end part.

  Then, the operator operates the cursor key k1 to move the cursor Q up, down, left, or right on the map screen 53, or touches a predetermined portion on the map screen 53 with the stylus pen 54 to display the map. When scrolling up, down, left and right, the spot setting processing means (not shown) of the CPU 31 performs spot setting processing and sets a predetermined spot on the map screen 53 where the cursor Q is located as a set spot.

  Subsequently, a hierarchy determination processing unit (not shown) of the CPU 31 performs a hierarchy determination process to determine whether or not there are a plurality of levels at the set point. In the present embodiment, since there is an underground shopping mall in the basement of the set point, the set point has a plurality of levels, that is, the first floor above the ground as the first level, and the first basement as the second level. Will exist. Therefore, the display processing means 93 displays the number of hierarchical bars in the hierarchical display portion g1 of the mode display area AR2 by the number of each hierarchical level present at the set point. Therefore, the operator can recognize that a plurality of hierarchies exist at the set point. In the present embodiment, the hierarchical bar is composed of a first-floor hierarchical bar with the letter “B1” and a first-floor hierarchical bar with the letter “1F”.

  Then, when the operator looks at the hierarchy bar, selects the first-floor hierarchy bar and clicks with the stylus pen 54, the hierarchy selection processing means 92 of the CPU 31 performs the hierarchy selection process, and the first-floor underground floor as a predetermined hierarchy. The display processing means 93 reads the first basement data as the second hierarchical data of the map data, displays the current location Pp on the map screen 53, and according to the first basement data, A map around the first floor underground as shown in FIG. 6 is displayed in correspondence with the map of the first floor above ground. Along with this, the color of the first basement floor bar with the letters “B1” is changed.

  When the operator looks at the hierarchy bar and selects the ground floor floor bar and clicks it with the stylus pen 54, the hierarchy selection processing means 92 selects the ground floor as a predetermined hierarchy and the display processing means. 93 reads the ground first floor data as the first hierarchical data of the map data, displays the current location Pp on the map screen 53, and according to the ground first floor data, the ground as shown in FIG. A map around the first floor is displayed in correspondence with the map of the first basement. Along with this, the color of the ground floor floor bar with the letters “1F” is changed.

  In this case, as described above, the hierarchy data for each hierarchy is created so that each point on the map is placed at a corresponding position when the map is displayed on the map screen 53. When a map screen of a hierarchy is formed, points corresponding to each hierarchy are displayed at the same position on each map screen 53.

  Then, when the map ground of each layer is formed, the current location Pp and the cursor Q are displayed at the same position on the map screen 53, and the operator can set the location indicated by the current location Pp and the cursor Q by the operator. A point serving as a reference for recognizing the correspondence between a position in the current hierarchy and a position in another hierarchy, that is, a reference point is configured.

  Therefore, no matter which hierarchy is selected by the operator, the current location Pp and the cursor Q do not move on the map, and represent a reference position common to each hierarchy. For example, on the map screen 53, the position of the current location Pp and the cursor Q when the first basement is selected is equal to the position of the current location Pp and the cursor Q when the first floor is selected. As a result, the operator can recognize an arbitrary point on the map by referring to the map using the current position Pp or the position of the cursor Q as a guide.

  In addition, the display processing means 93 may change the display method of the map according to time for each level of the underground shopping mall, for each predetermined area of the underground shopping mall, or for each predetermined facility of the underground shopping mall based on the time data of the hierarchical data. Make it different. For example, depending on whether the day is a business day or whether the time is a business hour, the color of a map of a predetermined hierarchy, a predetermined region, a predetermined facility, or the like may be changed, or the map screen 53 Characters such as “in business” and “out of business hours” can be displayed on a predetermined portion.

  In the present embodiment, when the operator looks at the level bar, selects the first level basement level bar and clicks with the stylus pen 54, the level selection processing means 92 selects the first level basement. However, when a hierarchy detection unit capable of detecting a hierarchy, such as an altimeter, can be provided, the hierarchy selection processing unit 92 determines the hierarchy detected by the hierarchy detection unit. You can choose.

  Subsequently, a detailed map determination processing unit (not shown) of the CPU 31 performs a detailed map determination process to determine whether a detailed map exists in the selected hierarchical map. In the present embodiment, a standard map displayed at a basic scale on the map of the first basement floor, a first detailed map displayed at a scale more detailed than the standard map, and the first detailed map Since there is a second detailed map displayed in a detailed scale, the display processing means 93 sets a scale display part g2 adjacent to the hierarchy display part g1 in the mode display area AR2, and the scale display part Three scale bars are displayed in g2. The scale bar comprises a first scale bar representing the scale of the standard map, a second scale bar representing the scale of the first detailed map, and a third scale bar representing the scale of the second detailed map, Characters “50 m”, “25 m”, and “10 m” are attached to the first to third scale bars, respectively. With these characters, the unit distance on the displayed map can be recognized.

  Then, when the operator looks at the first to third scale bars, selects a predetermined scale bar and clicks with the stylus pen 54, the scale selection processing means (not shown) of the CPU 31 performs the scale selection processing, and the map A predetermined scale on the screen is selected, and the display processing means 93 reads out the first basement data corresponding to the selected scale out of the first basement data, and displays the current location Pp on the map screen 53. At the same time, the map around the first basement is displayed at the scale.

  In FIG. 7, the current location Pp and the detailed map of the first basement are displayed when the scale of the second detailed map is selected. Along with this, the color of the third scale bar with the letter “10 m” is changed.

  When a route from the departure point to the destination is searched, the searched route is displayed on the map screen 53. For this purpose, the display processing means 93 reads the route guidance data from the data recording unit 16, displays the searched route according to the route data in the route guidance data, and voices the searched route by a message from the voice output unit. To provide route guidance.

  In the present embodiment, the route guidance data downloaded to the hard disk of the recording device 74 is copied to the memory card 48, and the memory card 48 is set in the navigation device 14 and further copied to the data recording unit 16. However, it can also be transmitted from the personal computer 61 to the navigation device 14 by wireless LAN.

  Thus, since the map of each hierarchy in a setting point can be displayed on the map screen 53, the correspondence of the position in the present hierarchy and the position in another hierarchy can be recognized easily. Therefore, for example, in the area where the underground shopping area is formed, the map screen 53 of the underground shopping area can be seen. Therefore, when walking on the ground and moving to the underground shopping area, the current location Pp corresponds to any position of the underground shopping center. Can easily be recognized and know where to go underground. Further, since the map screen 53 on the ground can be viewed, it is possible to easily recognize which position on the ground the current location Pp corresponds to when walking on the ground and moving to the ground. Know where to move to the ground.

  That is, when moving from the current level to another level, the current location Pp can be easily recognized and the destination can be easily reached.

Next, a flowchart will be described.
Step S1: The current location Pp is moved or the current location Pp after scrolling the map is set as a set point.
Step S2: It is determined whether there are a plurality of levels at the set point. If a plurality of hierarchies exist at the set point, the process proceeds to step S3, and if not present, the process ends.
Step S3: A hierarchical bar is displayed.
Step S4: It is determined whether or not to select the first basement level bar. If the basement level 1 floor bar is selected, the process proceeds to step S5. If not selected, the process proceeds to step S6.
Step S5: A map of the underground structure is displayed, and the process returns to Step S3.
Step S6: It is determined whether or not to select the ground level first floor bar. If the ground floor floor bar is selected, the process ends. If not selected, the process returns to step S3.

  In the present embodiment, the navigation device 14 mounted on a PDA has been described, but the present invention can also be applied to a navigation device mounted on a vehicle.

  In this case, you can see the map screen of the underground parking lot in the area where the underground parking lot is formed, so when you are traveling on the ground and moving to the underground parking lot, You can easily recognize which position corresponds to where you need to move to the basement. Also, since you can see the map screen on the ground, you can easily recognize where the current location corresponds to when you are traveling in the underground parking lot and moving to the ground. Know where to move to the ground.

  In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

It is a functional block diagram of the navigation system in the embodiment of the present invention. 1 is a conceptual diagram of a navigation system in an embodiment of the present invention. It is a block diagram of the navigation apparatus in the embodiment of the present invention. It is a flowchart which shows operation | movement of the navigation apparatus in embodiment of this invention. It is a 1st figure which shows the example of the map screen in embodiment of this invention. It is a 2nd figure which shows the example of the map screen in embodiment of this invention. It is a 3rd figure which shows the example of the map screen in embodiment of this invention.

Explanation of symbols

14 Navigation device 17 Navigation processor 31 CPU
43 Network 53 Map Screen 61 Personal Computer 62 Information Center 91 Second Information Acquisition Processing Unit 92 Hierarchy Selection Processing Unit 93 Display Processing Unit

Claims (7)

  Information acquisition processing means for acquiring map data for each level, point setting processing means for setting a predetermined point on the map screen as a setting point, and a hierarchy for determining whether or not there are a plurality of levels at the setting point The display processing means includes a determination processing means and a display processing means for displaying a map of the selected hierarchy. When the hierarchy determination processing means determines that there are a plurality of hierarchies at the set point, A map display device that displays that a plurality of hierarchies exist at a set point.   The map display device according to claim 1, wherein the display processing unit displays that there are a plurality of hierarchies at a set point by displaying as many hierarchy bars as the number of hierarchies existing at the set point.   3. The map display device according to claim 2, wherein when the operator selects a predetermined hierarchy bar among the hierarchy bars, the display processing means displays a map of the hierarchy represented by the selected hierarchy bar.   The map display device according to claim 1, wherein the display processing unit displays that there are a plurality of hierarchies at a set spot according to the number of hierarchies present at the set spot.   The map display device according to claim 1, wherein the predetermined point is a road point on the ground surface.   When map data for each level is acquired, a predetermined point on the map screen is set as a set point, it is determined whether or not there are multiple levels at the set point, and there are multiple levels at the set point A map display method characterized by displaying a map of a selected hierarchy when judged, and displaying that a plurality of hierarchies exist at a set point.   Information acquisition processing means for acquiring map data for each layer, point setting processing means for setting a predetermined point on the map screen as a setting point, and determining whether or not a plurality of layers exist at the setting point It functions as a hierarchy determination processing means and a display processing means for displaying a map of the selected hierarchy, and the display processing means is operated when the hierarchy determination processing means determines that a plurality of hierarchies exist at the set point. A program for displaying that a plurality of hierarchies exist at a set point.

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