JP2004020244A - Navigation system and program of map display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable movement along a surely intended pathway or a search pathway according to a map screen. <P>SOLUTION: This navigation system is equipped with a present location detecting part for detecting a present location, a display part for forming a map screen, an institution selecting processing means for selecting an institution in a prescribed region which is set corresponding to the present location, and an emphasizing notification processing means for emphasizing a selected institution and informing it to an operator. A prescribed institution is emphasized and informed to the operator, so that the movement along the surely intended pathway or the search path way is enabled. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a program for a navigation system and a map display method.
[0002]
[Prior art]
Conventionally, in a navigation device, for example, a current position, that is, a current position is detected by a GPS (Global Positioning System), map data is read from a data recording unit, and a map screen is formed on a display of a display unit. On the map screen, a map of the current location and the surrounding area is displayed. Therefore, the operator can not only recognize the current position but also the surrounding situation.
[0003]
Then, for example, when a navigation device is mounted on a PDA (Personal Digital Assistant) as a mobile terminal, while holding the PDA, a predetermined route to a destination is determined based on the current location detected by the navigation device. You can walk. In this case, when the operator inputs the departure place and the destination, the route is searched, the searched route, that is, the searched route is displayed on the map screen, and the user can walk to the destination according to the searched route.
[0004]
In addition, landmarks for predetermined facilities are displayed on the map screen, and the user can walk with the landmark as one of the landmarks.
[0005]
[Problems to be solved by the invention]
However, in the conventional navigation device, since a landmark is simply displayed on a map screen, an impression to an operator is weak, and the vehicle may pass without notice. In that case, it becomes impossible to move along the intended route or the searched route according to the map screen.
[0006]
The present invention solves the problems of the conventional navigation device, and provides a navigation system and a program for a map display method that can surely move along an intended route or a searched route according to a map screen. The purpose is to:
[0007]
[Means for Solving the Problems]
For this purpose, in the navigation system of the present invention, a current position detecting unit for detecting a current position, a display unit for forming a map screen, and a facility for selecting a facility in a predetermined area set in correspondence with the current position There is a selection processing means and an emphasis notification processing means for emphasizing the selected facility and notifying the operator.
[0008]
In another navigation system of the present invention, the highlight notification processing means is a highlight display processing means for highlighting and displaying a landmark for a selected facility on the map screen.
[0009]
In still another navigation system according to the present invention, the highlighting processing means sets an additional information area at a predetermined location on the map screen, and highlights a landmark for the facility selected in the additional information area. To display.
[0010]
In still another navigation system according to the present invention, the highlighting processing means displays a current location in the center of the additional information area and a landmark for a selected facility on at least one of the left and right sides of the current location. .
[0011]
In still another navigation system according to the present invention, when there is no selected facility, the highlighting processing means displays only the current location in the additional information area.
[0012]
In the program of the map display method according to the present invention, the computer selects a current position detection unit for detecting a current position, a display unit for forming a map screen, and a facility in a predetermined area set in correspondence with the current position. It is made to function as facility selection processing means and emphasis notification processing means for emphasizing the selected facility and notifying the operator.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
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 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.
[0014]
FIG. 1 is a functional block diagram of the navigation system according to the embodiment of the present invention.
[0015]
In the figure, 46 is a GPS card as a current location detecting unit for detecting the current location, 35 is a display unit for forming a map screen, and 91 is a facility for selecting a facility in a predetermined area set corresponding to the current location. The selection processing means 92 is an emphasis notification processing means for emphasizing the selected facility and notifying the operator.
[0016]
FIG. 2 is a conceptual diagram of the navigation system according to the embodiment of the present invention.
[0017]
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.
[0018]
The personal computer 61, the server 63, the navigation processing unit 17, etc. function as a computer based on predetermined programs, data, etc., alone or in combination of two or more. The navigation device 14, the network 43, the personal computer 61, the information center 62 and the like constitute a navigation system.
[0019]
The personal computer 61 includes a CPU 71 as an arithmetic device and a control device, a display unit 72 as an informing 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 may be used instead of the CPU 71. In addition, as the display unit 72, a display such as a CRT display, a liquid crystal display, and a plasma display can be used. In the present embodiment, the display unit 72 is used as the notification device. However, instead of the display unit 72, a voice display device that notifies the operator of various kinds of information by voice may be used. it can.
[0020]
In addition, a keyboard, a mouse, and the like can be used as the operation unit 73, and a touch panel formed on the display can also be used. Further, a barcode reader, a light pen, a remote control device for remote operation, a joystick, or the like can be used. In the touch panel, an operation area such as various keys, switches, and buttons is formed on a display, and an input can be performed by touching (pressing) the operation area.
[0021]
The recording device 74 includes an internal storage device (not shown) such as a RAM, a ROM, and a flash memory, and an external storage device such as a hard disk and a memory card is selectively provided. The hard disk constitutes a first recording medium, and the memory card constitutes a second recording medium. In addition to the hard disk and the 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 as the external storage device. 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.
[0022]
In the present embodiment, a personal computer 61 is used as the user terminal, but instead of the personal computer 61, an electronic notebook, a mobile phone, a mobile terminal, a video phone, a game machine, or the like, A device that can be connected to the network 43 and can perform two-way communication can also be used. Further, in the present embodiment, a PDA is used as a mobile terminal, but instead of the PDA, a mobile terminal such as an electronic organizer, a mobile phone, a mobile terminal, a video phone, a game machine, or the like is used. It is also possible to use a device that can perform two-way communication while performing the communication.
[0023]
The information center 62 includes a server 63, a navigation data database (DB) 64 connected to the server 63, and for recording 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 a route is recorded, and facilities in which facility data relating to various facilities are recorded. It consists of data files and the like. Data files such as a road data file, an intersection data file, a node data file, and a landmark data file are formed in the map data file, and road data representing information of each road (road link) is included in the road data file. The intersection data representing the information of each intersection in the file is the node data file, the node data representing the information of the set node points along each road, the landmark data file data representing the landmark of a predetermined facility, , Landmark data are respectively recorded. The landmark data includes coordinates indicating the location of the facility, the name of the facility, an image for drawing the landmark, and the like. Navigation data is composed of map data, search data, facility data, and the like.
[0024]
As the road data, data representing width, slope, cant, bank, road surface condition, number of lanes of the road, places where the number of lanes is reduced, places where the width is narrowed, level crossings, etc. are taken as the road data. However, for a corner, data representing a radius of curvature, an intersection, a T-shaped road, an entrance and an exit of a corner, etc., and for road attributes, data representing a downhill road, an uphill road, etc., In addition to the general roads, data representing expressways, urban expressways, toll roads, and other expressways and toll roads are recorded. Further, with respect to a high-speed / toll road, data indicating an entrance / exit attachment road (ramp way), a tollgate, and the like are recorded.
[0025]
Further, as the node data, the actual road junctions (including intersections, T-shaped roads, etc.), the coordinates (positions) of the node points set for each road at predetermined distances according to the radius of curvature, etc. Data indicating the link between the node points connecting the node points, the height (altitude) of each node point, and the like are recorded.
[0026]
As the facility data, data representing facilities such as hotels, gas stations, parking lots, and tourist facilities in each region is recorded. The navigation data database 64 also records voice output data for outputting predetermined information by voice.
[0027]
Incidentally, the information center 62 is a traffic information transmission center as a traffic information provider, for example, traffic congestion information, regulation information, parking lot transmitted from a VICS (Vehicle Information and Communication System) (not shown) center. Information, traffic accident information, traffic information consisting of various information such as the congestion status of the service area, etc., as well as news, general information such as weather forecast, etc., can be received. The data is sent to the personal computer 61 via the network 43 as it is, or recorded in the navigation data database 64. For this purpose, a statistical data file is provided in the navigation data database 64, and past traffic information and general information are recorded in chronological order as statistical data. And processed data of traffic information and general information is recorded. In processing traffic information and general information, the general information and the like are referred to as necessary.
[0028]
The information center 62 may be any one of an individual, a company, an organization, a local government, a government agency, and the like. Then, the information center 62 creates the navigation data and the like by itself or purchases it from another information provider and supplies it to the personal computer 61.
[0029]
The network 43 includes a LAN (Local Area Network), a WAN (Wide Area Network), an intranet, a mobile telephone network, a telephone network, a public communication network, a dedicated communication network, and a communication network such as the Internet. Can be used. Further, as the network 43, communication means using CS broadcasting, BS broadcasting, terrestrial digital television broadcasting, FM multiplex broadcasting, or the like using a broadcasting satellite 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 the Intelligent Transport System (ITS) can be used.
[0030]
Next, the navigation device 14 having the above configuration will be described.
[0031]
FIG. 3 is a block diagram of the navigation device according to the embodiment of the present invention.
[0032]
In the figure, reference numeral 14 denotes a navigation device. The navigation device 14 performs various arithmetic processes such as a navigation process based on input information, a map data, and a route when a route is searched. 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, a first and a second External slots 44, 45 and the like as two slots are provided. The data recording section 16 is constituted by a flash memory and is provided as an internal storage device.
[0033]
The external slots 44 and 45 constitute an interface. By setting a GPS card 46 as a current position detecting unit in the external slot 44, the current position can be detected by the GPS card 46, and a communication as a communication unit can be performed. 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. By setting the memory card 48 in the external slot 45, the memory card 48 Can read various programs, data, and the like recorded in the.
[0034]
The GPS card 46 has a built-in GPS sensor (not shown), and the GPS sensor detects a current position on the earth by receiving a radio wave generated by an artificial satellite, that is, a GPS signal.
[0035]
The navigation processing unit 17 includes a CPU 31 as an arithmetic device and a control device that controls the entire navigation device 14, a RAM 32 used as a working memory when the CPU 31 performs various arithmetic processes, and a control program. A ROM 33 in which various programs for searching for a route to a destination, route guidance, determining a specific section, and the like are recorded as an internal storage device, and the navigation processing unit 17 includes the input unit 34, the display unit 35, an audio input unit 36, an audio output unit 37, and a communication unit 38 are connected. Note that a semiconductor memory, a magnetic core, or the like is used as the RAM 32, the ROM 33, the data recording unit 16, and the like. Then, an MPU or the like can be used instead of the CPU 31 as an arithmetic device and a control device.
[0036]
Although a flash memory is used for the data recording unit 16, 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. The hard disk constitutes a third recording medium. Instead of the hard disk, a flexible disk, CD-ROM, CD-R, MD, DVD, optical disk, MO, IC card, optical card, memory card, or the like can be provided as an external storage device.
[0037]
In the present embodiment, various programs are recorded in the ROM 33, and various data are recorded in the data recording unit 16. However, programs and data may be recorded in the same external storage device. 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 programs, data, and the like can be updated by exchanging the external storage device.
[0038]
The input unit 34 is used to correct the current position, input a departure point and a destination, and operate the communication unit 38. The input unit 34 includes various operation switches (not shown) such as keys, switches, and buttons. Consists of a stylus pen. The input unit 34 includes various operation switches (not shown) such as various keys, bars, switches, and buttons, which are displayed as images on a screen formed on the display, and the operation switches are clicked with the stylus pen. Thus, input can be performed.
[0039]
Note that, 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.
[0040]
The various screens formed on the display include operation guidance, operation menus, key guidance, a search route from the current location to the destination, guidance information along the search route, FM multiplex broadcast programs, and the like. Displayed with. As the display unit 35, a display such as a CRT display, a liquid crystal display, and a plasma display can be used.
[0041]
Further, the voice output unit 37 includes a voice synthesizer and a speaker (not shown), and the search route, the guidance information, and the like are output from the voice output unit 37, for example, as voice synthesized by the voice synthesizer. In addition to the voice synthesized by the voice synthesizer, it is also possible to output various sounds, various guidance information previously recorded on a tape, a memory, or the like.
[0042]
The communication unit 38 is used to connect the navigation device 14 and the personal computer 61 via a wireless LAN, or to connect the navigation device 14 and the information center 62 via a network 43. A communication unit 49 and an external communication unit 50 for wired communication for connecting the navigation device 14 and the personal computer 61 via a serial connector, a cable, and the like are provided. The external communication unit 49 receives traffic information including traffic congestion information, regulation information, parking lot information, traffic accident information, service area congestion status and the like transmitted from a VICS center or the like, Information such as a weather forecast can be received as FM multiplex information.
[0043]
By the way, in the navigation system having the above-described configuration, when the operator operates the operation unit 73 of the personal computer 61 to select and input a predetermined area from which the map data is to be acquired, for example, the CPU 71 The request processing means performs a map data request process and transmits a predetermined request signal to the information center 62.
[0044]
Then, when the request signal is received at the information center 62, the first information acquisition processing means (not shown) of the server 63 performs the first information acquisition processing and refers to the map data file of the navigation data database 64, Read and acquire map data of the selected area. Subsequently, the map data transmission processing means (not shown) of the server 63 performs map data transmission processing, and transmits the map data to the personal computer 61 via the network 43.
[0045]
Then, when the map data is transmitted, a first recording processing unit (not shown) of the CPU 71 performs a first recording process 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.
[0046]
Next, when the operator sets the memory card 48 in the external slot 45 of the navigation device 14, the second recording processing means (not shown) of the CPU 31 performs a second recording process, and stores the map data in a data recording unit. Further copy to 16.
[0047]
Further, in the navigation system having the above-described configuration, when the operator operates the operation unit 73 of the personal computer 61 to input a departure place and a destination, for example, a route is searched in the information center 62, and the search result is transmitted to the personal computer 61. It is being sent.
[0048]
To this end, when the operator operates the operation unit 73 of the personal computer 61 to input the departure place and the destination, the search condition setting processing means (not shown) of the CPU 71 performs search condition setting processing and sets the departure place and the destination. The search condition is set, and the search condition is transmitted to the information center 62.
[0049]
Then, 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 of the navigation data database 64, and obtains information necessary for searching for a route. To get. The first information acquisition processing means acquires the information by referring to the statistical data file and reading out the statistical data based on the traffic information or by reading the traffic information transmitted from the VICS center. You can also.
[0050]
Subsequently, a search processing unit (not shown) of the server 63 performs a search process, and searches for a route based on the search data, traffic information, statistical data, and the like according to the search conditions. When a route is searched by the search processing means, a route guidance data transmission processing means (not shown) of the server 63 performs a route guidance data transmission process, and displays route data representing the searched route and a map around the searched route. The map data, the 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 guidance data.
[0051]
The route data includes road data (road attributes and the like) constituting the search route, and the map data includes a mesh including the search route and mesh information of a mesh adjacent to the mesh. Although the voice output data can be transmitted from the information center 62 to the personal computer 61, the voice output data can be recorded in the data recording unit 16 of the navigation device 14 in advance. There is no need to send it as data.
[0052]
Then, 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 in a predetermined procedure, the first recording processing means stores the downloaded route guidance data in the memory card 48. Copy to
[0053]
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 a second recording process and stores the route guidance data in the data recording unit 16 Copy more.
[0054]
Next, the operation of the navigation device 14 will be described.
[0055]
FIG. 4 is a flowchart showing the operation of the display processing 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. FIG. 7 is a second diagram illustrating an example of a screen, FIG. 7 is a third diagram illustrating an example of a map screen according to the embodiment of the present invention, and FIG. 8 is a fourth diagram illustrating an example of a map screen according to the embodiment of the present invention. FIG. 9 is a fifth diagram showing an example of a map screen according to the embodiment of the present invention.
[0056]
5 to 9, reference numeral 51 denotes a PDA on which the navigation device 14 (FIG. 3) is mounted, and reference numeral 52 denotes a display of the display unit 35. A map screen 53 is formed on the display 52. A map of the surrounding area is displayed. Further, 54 is a stylus pen for performing a predetermined input, k1 is a cursor key, and k2 to k5 are keys for selecting functions. By pressing the cursor key k1 at a predetermined position in the up, down, left, and right directions, the current position Pp can be moved up, down, left, and right, and the map can be scrolled up, down, left, and right. In this case, the input unit 34 includes the stylus pen 54, the cursor key k1, and the keys k2 to k5.
[0057]
First, when a power switch (not shown) is turned on, the navigation device 14 is activated, and the GPS card 46 detects the current location Pp. Then, the second information acquisition processing means (not shown) of the CPU 31 performs the second information acquisition processing, reads and acquires the search data and the map data from the data recording unit 16, and the display processing means (not shown) of the CPU 31 A map screen 53 is formed on the display 52, and the current location Pp and the searched route Rs are displayed on the map screen 53, and a map of the surrounding area is displayed.
[0058]
Therefore, the operator can not only recognize the current location Pp, but also recognize the surrounding situation, and can walk to the destination according to the search route Rs. If the operator does not enter the departure place and the destination, the search route Rs is not searched and is not displayed on the map screen 53.
[0059]
In addition, a predetermined facility selected in advance is set as a landmark display facility so that it is possible to confirm whether the user is walking appropriately on the intended route or the search route Rs. The landmark qi (i = 1, 2,...) Is displayed on the map screen 53, and the user can walk using the landmark qi as a mark. As landmark display facilities, for example, logos and trademarks are relatively widely known, such as convenience stores, supermarkets, department stores, banks, post offices, police boxes, gas stations, etc. For example, a facility installed along a road with a relatively large traffic amount is selected.
[0060]
By the way, if the landmarks qi are only displayed on the map screen 53, the impression on the operator may be weakened and the operator may pass through without being noticed. In that case, it becomes impossible to move along the intended route or the searched route Rs according to the map screen.
[0061]
Therefore, on the map screen 53, a standard mode in which each landmark qi is displayed by a normal method and an emphasis mode in which a predetermined landmark qi is emphasized and displayed can be selected. When the mode is selected, among the landmark display facilities, a further preselected facility is set as the highlight display target facility, and the landmark qi is highlighted and displayed for the highlight display target facility. It has become. In the present embodiment, all of the landmark display facilities are set as highlight display target facilities, but only predetermined landmark display facilities are set as highlight display target facilities. You can also. Further, the operator can change the setting of the facility to be highlighted.
[0062]
For this purpose, a scroll button b1 is displayed at a predetermined location on the map screen 53, in the present embodiment, at the lower left corner, and when the scroll button b1 is clicked with the stylus pen 54, a mode determination process (not shown) of the CPU 31 is performed. The means performs a mode determination process to determine that the emphasis mode has been selected. When the highlight mode is selected, the facility selection processing means 91 (FIG. 1) of the display processing means performs a facility selection process, reads the current location Pp and the landmark data, and stores the coordinates of the current location Pp and the landmark data. It is determined whether or not the facility to be highlighted is present in a predetermined area based on the coordinates of the location of the facility. In the present embodiment, the predetermined area means that the facility to be highlighted is close to the current location Pp, for example, within a circle having a radius of 30 [m] around the current location Pp, and is intended from the current location Pp. It means within a range of 15 [m] before and after along the route or the search route Rs.
[0063]
Then, when the facility to be highlighted is present in a predetermined area, the highlight notification processing means 92 of the display processing means performs a highlight notification process, and exists in the predetermined area of the facility to be highlighted. Notify the operator by highlighting the facility that is operating. In the present embodiment, the emphasis notification processing means 92 is constituted by emphasis display processing means.
[0064]
That is, when the facility to be highlighted is present in the predetermined area, the highlighting processing means performs a highlighting process, performs two-screen display as shown in FIG. , A map area AR1 for displaying the current location Pp, a map around the location, a search route Rs, a landmark qi, and the like is formed, and a land near the current location Pp of the landmarks qi is formed at a predetermined lower end portion. An additional information area AR2 for highlighting and displaying the marks q1 and q2 is formed.
[0065]
Subsequently, the position determination processing means (not shown) of the highlighting processing means determines the intended route or the route based on the coordinates of the road constituting the route or the search route Rs and the coordinates of the location of the facility according to the landmark data. It is determined whether the facility is located on the left or right side in the traveling direction of the search route Rs. When there is a facility only on the left side of the intended route or the search route Rs, the highlighting processing means displays the current location Pp in the center of the additional information area AR2 as shown in FIG. On the left side of the current location Pp, the landmark q1 and the name of the facility for the intended route or the facility on the left side of the search route Rs are displayed. When there is a facility only on the right side of the intended route or the search route Rs, the highlighting processing means displays the current location Pp at the center of the additional information area AR2 as shown in FIG. On the right side of the current location Pp, the landmark q2 and the name of the facility for the intended route or the facility on the right side of the search route Rs are displayed. Further, when there are facilities on both the left and right sides of the intended route or the search route Rs, the highlighting processing means displays the current location Pp at the center of the additional information area AR2 as shown in FIG. On both sides of the current location Pp, landmarks q1, q2 and facility names are displayed for the right and left facilities of the intended route or the searched route Rs. Note that, in the present embodiment, the highlighting processing means has the shortest distance from the current location Pp of at least one of the left and right sides of the intended route or the searched route Rs in the additional information area AR2. Although the facility is displayed, it is also possible to display a plurality of facilities.
[0066]
Then, every time the operator moves by moving a set distance (for example, 10 [m]) and walks until reaching the destination, it is determined whether or not the facility to be highlighted is present in the area, When the facility exists in the area, the facility is displayed in an emphasized manner.
[0067]
On the other hand, when the facility to be highlighted is not present in the predetermined area, the highlighting processing means displays only the current location Pp at the center of the additional information area AR2 as shown in FIG. A horizontal line indicating that there is no facility to be highlighted is displayed on both sides. Note that the horizontal line may not be displayed.
[0068]
In addition, a scroll button b2 is displayed at a predetermined position in the additional information area AR2, in this embodiment, at the upper left corner, and when the scroll button b2 is clicked with the stylus pen 54, the mode selection processing means Select
[0069]
Then, the normal display processing means of the display processing means performs the normal display processing, deletes the additional information area AR2, and as shown in FIG. 5, the current position Pp, the map of the surrounding area, the search route Rs, the landmark qi, Just to show.
[0070]
As described above, when the facility to be highlighted is present in the predetermined area, the additional information area AR2 is formed on the map screen 53, and the landmark qi is highlighted and displayed in the additional information area AR2. The facility is emphasized and notified, so that the operator has a stronger impression of the facility and does not pass through the facility without noticing. Since the user can walk with the facility as a landmark based on the landmark qi, the user can surely move along the intended route or the search route Rs according to the map screen 53.
[0071]
Next, the flowchart of FIG. 4 will be described.
Step S1 The current location Pp and landmark data are read.
Step S2: It is determined whether or not the facility to be highlighted is present in a predetermined area. If the facility to be highlighted is within the predetermined area, the process proceeds to step S3, and if not, the process proceeds to step S4.
Step S3: It is determined whether or not there is a facility on the right side. If there is a facility on the right side, the process proceeds to step S5; otherwise, the process proceeds to step S6.
Step S4: No facility is displayed, and the process proceeds to step S9.
Step S5: It is determined whether there is a facility on the left side. If there is a facility on the left side, the process proceeds to step S7; otherwise, the process proceeds to step S8.
Step S6: The landmark qi is displayed for the facility on the left side, and the process proceeds to step S9.
Step S7: Display landmarks qi for the left and right facilities.
Step S8: The landmark qi is displayed for the facility on the right side, and the process proceeds to step S9.
Step S9: It is determined whether the destination has been reached. If the vehicle has reached the destination, the process ends. If the vehicle has not reached the destination, the process proceeds to step S10.
Step S10: Wait for walking the set distance, and after walking the set distance, return to step S1.
[0072]
In the present embodiment, the additional information area AR2 is formed on the map screen 53, and the landmark qi is emphasized by displaying a predetermined landmark qi in the additional information area AR2. The landmark qi can be emphasized by blinking only the landmark near the current position Pp or changing the color without forming the area AR2.
[0073]
It should be noted that the present invention is not limited to the above-described embodiment, but can be variously modified based on the gist of the present invention, and they are not excluded from the scope of the present invention.
[0074]
【The invention's effect】
As described above in detail, according to the present invention, the predetermined facility is notified to the operator with emphasis, so that the operator can surely move along the intended route or the searched route.
[Brief description of the drawings]
FIG. 1 is a functional block diagram of a navigation system according to an embodiment of the present invention.
FIG. 2 is a conceptual diagram of a navigation system according to the embodiment of the present invention.
FIG. 3 is a block diagram of the navigation device according to the embodiment of the present invention.
FIG. 4 is a flowchart illustrating an operation of a display process according to the embodiment of the present invention.
FIG. 5 is a first diagram showing an example of a map screen according to the embodiment of the present invention.
FIG. 6 is a second diagram illustrating an example of a map screen according to the embodiment of the present invention.
FIG. 7 is a third diagram illustrating an example of a map screen according to the embodiment of the present invention.
FIG. 8 is a fourth diagram illustrating an example of a map screen according to the embodiment of the present invention.
FIG. 9 is a fifth diagram illustrating an example of a map screen according to the embodiment of the present invention.
[Explanation of symbols]
14 Navigation device 31 CPU
35 display unit 43 network 46 GPS card 53 map screen 61 personal computer 62 information center 91 facility selection processing means 92 emphasis notification processing means AR2 additional information area Pp current location qi landmark

Claims (6)

A current location detecting unit for detecting the current location, a display unit for forming a map screen, facility selection processing means for selecting a facility in a predetermined area set corresponding to the current location, and highlighting the selected facility And an emphasis notification processing means for notifying the operator of the navigation system. The navigation system according to claim 1, wherein the highlight notification processing unit is a highlight display processing unit that highlights and displays a landmark for a selected facility on the map screen. 3. The navigation system according to claim 2, wherein the highlighting processing means sets an additional information area at a predetermined location on the map screen, and highlights and displays a landmark for the facility selected in the additional information area. 4. The navigation system according to claim 3, wherein the highlighting processing unit displays a current location in the center of the additional information area and a landmark for a selected facility on at least one of the left and right sides of the current location. 5. The navigation system according to claim 3, wherein the highlighting processing means displays only a current location in the additional information area when there is no selected facility. A computer, a current position detection unit for detecting a current position, a display unit for forming a map screen, a facility selection processing unit for selecting a facility in a predetermined area set in correspondence with the current position, and a selected facility. A program for a map display method, which functions as emphasis notifying processing means for emphasizing and notifying an operator.

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