JP4211505B2 - Navigation system and program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a navigation system and a program.
[0002]
[Prior art]
Conventionally, in a navigation device, for example, a current position of a vehicle, that is, a current position, is detected by GPS (Global Positioning System), and a rotation angular velocity of a vehicle detected by a gyro sensor, that is, based on a turning angle, The direction of the vehicle, that is, the vehicle direction is detected, map data is read from the data recording unit, a map screen is formed on the display unit, and the vehicle position indicating the current location on the map screen, the vicinity of the vehicle position The map and the vehicle direction are displayed. Therefore, the driver who is an operator can drive the vehicle according to the vehicle position displayed on the map screen, the map around the vehicle position, and the vehicle direction.
[0003]
Further, when the driver inputs a destination and sets search conditions, a route from the departure point to the destination represented by the current location is searched based on the search conditions. The searched route, that is, the searched route is displayed on the searched route display screen formed on the display unit together with the vehicle position and the destination. Therefore, the driver can drive the vehicle according to the displayed search route. When the driver inputs a point different from the current location as a departure point, a route from the input departure point to the destination is searched.
[0004]
By the way, when the vehicle is traveling, if there is an intersection that will be passed next as a guide point within a predetermined distance from the current location, the vehicle position mark, the intersection mark, and the current location to the intersection Is displayed, that is, a scale indicating the remaining distance is displayed (for example, see Patent Document 1).
[0005]
[Patent Document 1]
JP 9-222330 A
[0006]
[Problems to be solved by the invention]
However, in the conventional navigation system, since only the main numbers are displayed on the scale, it is difficult not only to recognize the distance from the current location to the intersection, but also to read the scale accurately. Because there is, work is troublesome.
[0007]
An object of the present invention is to provide a navigation system and program capable of solving the problems of the conventional navigation system and easily recognizing the distance from the current location to a guide point.
[0008]
[Means for Solving the Problems]
For this purpose, in the navigation system of the present invention, information acquisition processing means for acquiring navigation information, display processing means for displaying a map on a display unit based on the navigation information, and driving the vehicle along a predetermined route. And an enlarged view display processing means for displaying an enlarged view of a predetermined guide point.
[0009]
The enlarged map display processing means displays a vehicle position display mark indicating the current location and a remaining distance display area for displaying the remaining distance from the current location to the guide point at respective initial positions on the enlarged map. Initial enlarged view display processing means, own vehicle position display processing means for moving and displaying the own vehicle position display mark as the vehicle travels, and if the own vehicle position display mark and the remaining distance display area overlap The remaining distance display processing means for displaying the remaining distance display area following the own vehicle position display mark when it disappears.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0021]
FIG. 1 is a block diagram showing a navigation system according to an embodiment of the present invention.
[0022]
In the figure, reference numeral 14 denotes an information terminal, for example, a navigation device as an in-vehicle device mounted on a vehicle. The navigation device 14 includes a GPS sensor 15 as a current location detection unit for detecting the current location, map data, road data, It functions as a computer based on basic information of the navigation device 14 such as search data, that is, a data recording unit 16 as an information recording unit in which various information is recorded in addition to navigation information, various programs, data, and the like. Based on the input information, the navigation processing unit 17 that performs various arithmetic processing such as navigation processing, the direction sensor 18 as the direction detection unit that detects the vehicle direction, and the driver who is the operator operate The operation unit 34 as a first input unit for performing a predetermined input is displayed on a screen (not shown). Various displays by images, a display unit 35 as a first output unit for notifying the driver, a voice input unit 36 as a second input unit for performing predetermined input by voice, and various by voice Is provided with a voice output unit 37 as a second output unit for notifying the driver, and a communication unit 38 as a transmission / reception unit functioning as a communication terminal. A display unit 35, an audio input unit 36, an audio output unit 37, and a communication unit 38 are connected. The navigation processor 17 is also connected with a vehicle speed sensor 41 as a vehicle speed detector.
[0023]
The GPS sensor 15 detects the current location on the earth by receiving radio waves generated by an artificial satellite, and also detects the time.
[0024]
In the present embodiment, the GPS sensor 15 is used as the current position detection unit, but a distance sensor, a steering sensor, an altimeter, etc. (not shown) may be used alone or in combination instead of the GPS sensor 15. The distance sensor detects a distance between predetermined points on the road, and calculates a distance based on a rotational speed of a wheel (not shown) or by integrating acceleration twice. The steering sensor detects a rudder angle, for example, an optical rotation sensor attached to a rotating part of a steering wheel (not shown), a rotation resistance sensor, an angle sensor attached to a wheel, etc. Can be used.
[0025]
Further, a gyro sensor, a geomagnetic sensor, or the like can be used as the direction sensor 18. As the gyro sensor, for example, a gas rate gyro, a vibration gyro, or the like is used, and the vehicle direction is detected by integrating the turning angle. The geomagnetic sensor detects the direction of the vehicle by measuring the geomagnetism.
[0026]
The data recording unit 16 includes a database including data files such as a map data file, an intersection data file, a node data file, a road data file, a search data file, and a facility information data file, and each data file includes a display unit. Data for outputting various images is recorded in 35. The data recording unit 16 also records data for outputting predetermined information by the audio output unit 37.
[0027]
For example, the map data file contains map data for displaying a map, the intersection data file contains intersection data related to each intersection, the node data file contains node data related to node points, and the road data file contains road data related to roads. The search data file stores search data for searching for a route, and the facility information data file stores facility information data related to various facilities. The intersection data, node data, road data, search data, etc. Road condition data representing the road condition is constructed.
[0028]
The intersection data includes data indicating the name of the intersection, the shape of the intersection, the main facilities adjacent to the intersection, the name of the main place ahead of the intersection, the distance between the intersections at the continuous intersection, and the like. In addition, the node data includes data representing an actual road branch point (including an intersection, a T-junction, and the like), a node point, a link between node points that connect the node points, and the like.
[0029]
The road data includes the width, slope, cant, bank, road surface condition, number of road lanes, places where the number of lanes decreases, places where the width becomes narrow, etc. , Radius of curvature, intersections, T-shaped roads, corner entrances, road attributes, downhill roads, uphill roads, etc., road types, national roads, prefectural roads, narrow streets, highways, urban highways Data representing expressways and toll roads such as roads and toll roads are included. Further, the road data includes data indicating level crossings, highway entrance and exit roads (rampways), highway / toll road tollgates, and the like. The facility information data includes data representing facility information such as name, address, telephone number, and facility guidance for facilities such as hotels, gas stations, parking lots, sightseeing spots, and department stores in each region.
[0030]
The navigation processing unit 17 includes an arithmetic device that controls the entire navigation device 14 and a CPU 31 as a control device, and a DRAM as a first recording medium used as a working memory when the CPU 31 performs various arithmetic processes. In addition to the RAM 32 such as SRAM, MRAM, and FeRAM, a control program, a ROM 33 as a second recording medium on which various programs for searching a route to the destination, route guidance, and the like are recorded, A flash memory (not shown) is provided as a third recording medium used for recording data, programs, and the like. A semiconductor memory, a magnetic core or the like is used as an internal storage device such as the RAM 32, ROM 33, flash memory or the like.
[0031]
An MPU or the like can be used instead of the CPU 31 as the arithmetic device and the control device.
[0032]
The data recording unit 16 includes a magnetic disk (not shown) such as a hard disk or a flexible disk as a fourth recording medium arranged as an external storage device for recording the various data. A head (not shown) such as a read / write head for reading or writing the data is provided. Similarly, the data recording unit 16 includes a magnetic tape, a magnetic drum, a CD, an MD, a DVD, an optical disk, an MO, an IC card, an optical card, and the like as a fifth recording medium disposed as an external storage device. You can also
[0033]
By the way, various programs can be recorded in the ROM 33 and various data can be recorded in the data recording unit 16, but the programs, data, and the like can also be recorded on a hard disk or the like. In this case, the program, data, etc. can be read from a hard disk or the like and written to the flash memory. Therefore, the program, data, etc. can be updated by exchanging the hard disk or the like. Further, when an automatic transmission control device is mounted to control an automatic transmission (not shown) mounted on the vehicle, the control program, data, etc. for the automatic transmission control device are also stored in the hard disk or the like. Can be recorded. Further, the program, data, etc. can be received via the communication unit 38 and written to the flash memory.
[0034]
The operation unit 34 is operated by the driver to correct the current location at the start of traveling, to input a departure point and a destination, to input a passing point, and to activate the communication unit 38. A keyboard, a mouse, a barcode reader, a light pen, a remote control device for remote control, a joystick, etc., which are arranged independently of the display unit 35, can be used. Further, as the operation unit 34, a predetermined input operation is performed by touching or clicking an image operation unit such as various keys, switches, and buttons displayed as images on the screen formed in the display unit 35. Can do.
[0035]
As the display unit 35, a display such as a CRT display, a liquid crystal display, or a plasma display can be used, or a hologram device that projects a hologram on a windshield of a vehicle can be used. Then, on the various screens formed on the display unit 35, the vehicle position indicating the current location, a map, a search route, guidance information along the search route, traffic information, etc. are displayed, or a characteristic at the intersection or the search route is displayed. In addition to displaying the distance to the next intersection, the direction of travel at the next intersection, and the like, the operation guide and operation of the image operation unit, operation unit 34, voice input unit 36, etc. Menus, key guidance, FM multiplex broadcast programs, and the like can be displayed.
[0036]
The voice input unit 36 includes a microphone (not shown) and the like, and can input necessary information by voice. Further, the voice output unit 37 includes a voice synthesizer and a speaker (not shown), and the search route, guidance information, traffic 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, various sounds, various guidance information recorded in advance on a tape, a memory, and the like can be output.
[0037]
The communication unit 38 is arranged along the road with various types of information transmitted from a road traffic information center such as a VICS (registered trademark: Vehicle Information and Communication System) center as a first information provider. A beacon receiver for receiving a radio wave beacon, an optical beacon, etc. via a radio beacon device, an optical beacon device, etc., an FM receiver for receiving FM multiplex broadcast via an FM broadcast station, and the like are provided. And, the beacon receiver receives traffic information such as traffic jam information, regulation information, parking lot information, traffic accident information, service area congestion status information, etc. In addition to the traffic information, news, General information such as weather forecasts can be received as FM multiplexed information. The beacon receiver and the FM receiver are unitized and arranged as a VICS receiver, but can be arranged separately.
[0038]
The communication unit 38 can also receive various data such as D-GPS information for detecting a detection error of the GPS sensor 15 transmitted from a predetermined base station. Further, the communication unit 38 can receive position information by radio wave beacons, optical beacons, and the like to detect the current location. In this case, the beacon receiver functions as a current location detection unit.
[0039]
Furthermore, the communication part 38 can also receive various information such as traffic information and general information from the information center 51 as the second information provider. For this purpose, the communication unit 38 and the information center 51 are connected via a network 43.
[0040]
The navigation device 14, the VICS (registered trademark) center, the information center 51, the network 43, and the like constitute a navigation system, and various types of information are transmitted and received between the communication unit 38 and a communication unit (not shown) of the information center 51. Is called.
[0041]
In the present embodiment, in order for the communication unit 38 to function as a communication terminal, a communication device such as a mobile phone is built in the communication unit 38 as a module. It is also possible to connect devices and connect the communication device and the communication unit 38. In that case, as a communication device, a mobile phone such as a mobile phone, a car phone, or a PHS, a wireless LAN card, or the like is used, a personal computer, a portable computer, a personal digital assistant (PDA), an electronic notebook, or a video phone. A game machine or the like having a communication function can be used.
[0042]
The network 43 includes a LAN (Local Area Network), a WAN (Wide Area Network), an intranet, a mobile phone network, a telephone network, a public communication network, a dedicated communication network, a communication network such as the Internet, etc. Communication means can be used. Communication means using CS broadcasting, BS broadcasting, terrestrial digital television broadcasting, FM multiplex broadcasting, etc. by a broadcasting satellite can also be used. Furthermore, it is possible to use communication means such as a non-stop automatic toll payment system (ETC) and a boundary communication system (DSRC) that are used in an intelligent road traffic system (ITS).
[0043]
The information center 51 may be operated by any one of an individual, a company, an organization, a local government, a government-related organization, or the like, and may be operated by the VICS (registered trademark) center.
[0044]
The information center 51 includes a server 53, a database (DB) 57 serving as an information recording unit connected to the server 53, the communication unit, and the like. Two-way communication is performed, and traffic information, general information, and the like are provided. For this purpose, the server 53 includes a CPU 54, a RAM 55, a ROM 56, and the like as an arithmetic device and a control device, and functions as a computer based on predetermined programs, data, and the like. Further, the same data as various data (including navigation information) recorded in the data recording unit 16 can be recorded in the database 57. The server 53 and the navigation processing unit 17 can also constitute a computer. Further, an MPU or the like can be used instead of the CPU 54.
[0045]
Then, the CPU 54 receives traffic information, general information, etc. transmitted from the VICS (registered trademark) center, etc., and records it in the database 57 as primary information, or processes the primary information to perform statistical processing, Statistical data constituting history information indicating the history of the traffic jam status, traffic jam prediction information for predicting the traffic jam status, and the like are created, and the statistical data is recorded in the database 57 as secondary information. In the present embodiment, in creating the statistical data, the history information includes detailed conditions such as date and time, day of the week, weather, various events, seasons, facility information (whether a large facility such as a department store or a supermarket). Added.
[0046]
Next, a basic operation of the navigation system having the above configuration will be described.
[0047]
First, when the operation unit 34 is operated by the driver and the navigation device 14 is activated, a navigation initialization processing unit (not shown) of the CPU 31 performs navigation initialization processing, and the current location and direction detected by the GPS sensor 15. While reading the direction of the vehicle detected by the sensor 18, various data are initialized. Note that the matching processing means (not shown) of the CPU 31 performs matching processing, and the current location is on any road link based on the trajectory of the read current location and the shape and arrangement of each road link constituting the surrounding road. The current location is specified by determining whether the current location is located.
[0048]
Subsequently, an information acquisition processing unit (not shown) of the CPU 31 performs an information acquisition process, and reads and acquires the navigation information from the data recording unit 16 or receives it from the information center 51 or the like via the communication unit 38. get. When acquiring from the information center 51, the information acquisition processing means downloads the received navigation information to a flash memory, a hard disk or the like. In addition, when the navigation information is acquired via the communication unit 38, the program can also be acquired.
[0049]
A display processing unit (not shown) of the CPU 31 performs a display process, forms a map screen on the display unit 35, and maps the vehicle position and a map around the vehicle position on the map screen based on navigation information. And the direction of the vehicle is displayed. Therefore, the driver can drive the vehicle according to the vehicle position, the map around the vehicle position, and the vehicle direction.
[0050]
Next, the operation of the navigation system when the navigation device 14 or the navigation system is used for searching for a route will be described.
[0051]
FIG. 2 is a main flowchart showing the operation of the navigation system in the embodiment of the present invention.
[0052]
When the driver inputs a destination by operating the operation unit 34 (FIG. 1), a destination setting processing unit (not shown) of the CPU 31 performs a destination setting process to set the destination. Note that the departure place can be input and set as necessary. Moreover, a predetermined point can be registered in advance, and the registered point can be input as a destination.
[0053]
Then, when the destination is set, the route search processing means (not shown) of the CPU 31 performs route search processing, reads the current location, destination, etc., and also reads the search data, etc. from the data recording unit 16, and presents the current location, destination. Based on the location and the search data, a route from the starting point represented by the current location to the destination is searched, and route data representing the searched route is output.
[0054]
Subsequently, a guidance processing means (not shown) of the CPU 31 performs guidance processing and guides the driver on the searched route, that is, route guidance. For this purpose, the route display processing means of the guidance processing means performs route display processing, reads the route data, and displays the searched route on the map screen according to the route data.
[0055]
If necessary, the voice output processing means of the guidance processing means performs voice output processing and outputs a search route by voice from the voice output unit 37 to perform route guidance.
[0056]
Incidentally, route search processing can be performed in the information center 51. In that case, the CPU 31 transmits the current location, the destination, and the like to the information center 51. When the information center 51 receives the current location and destination, the route search processing means (not shown) of the CPU 54 performs the same route search processing, reads the search data from the database 57, and based on the current location, destination and search data. Thus, a route from the departure point represented by the present location to the destination is searched, and route data representing the searched route is output. Subsequently, a transmission processing unit (not shown) of the CPU 54 performs transmission processing and transmits the route data to the navigation device 14. Therefore, in the navigation device 14, when the information acquisition processing means receives the route data from the information center 51, the guidance processing means performs route guidance as described above.
[0057]
In this way, route guidance is performed, and the driver can drive the vehicle according to the searched route.
[0058]
The navigation device 14 can receive traffic information, general information, and the like via the communication unit 38. For this purpose, the additional information acquisition processing means of the information acquisition processing means performs additional information acquisition processing, and receives and acquires the traffic information, general information, and the like as additional information. Therefore, the route display processing means displays additional information on the map screen.
[0059]
The traffic information specifies information type data indicating the type of information, secondary mesh X and Y data for specifying a secondary mesh as a mesh, and a road link connecting two points (for example, intersections). And link number data representing the uplink / downlink and link information representing the content of information provided corresponding to the link number data. The link information includes, for example, a traffic jam from the start point of the road link. Consists of traffic jam head data representing the distance to the head, traffic jam degree data representing the degree of traffic jam, traffic jam length data representing a traffic jam section from the head of the traffic jam to the end of the traffic jam, and the like.
[0060]
Therefore, the route display processing means converts each link information in the traffic information into, for example, a congestion arrow as a traffic condition index indicating a traffic congestion index indicating whether the traffic is congested or not. The congestion arrow is displayed along the road on the map screen. In this case, the color of the road, the traffic jam arrow, etc. is changed to red, orange, etc. according to the degree of traffic jam.
[0061]
In this manner, the driver can know the traffic jam situation on the route on which the vehicle is to travel, the searched route, and the like.
[0062]
By the way, when the route guidance by the guidance processing means is started and the vehicle is traveling along a predetermined route, when the current location approaches the intersection that is scheduled to pass next as the guidance point, that is, the guidance intersection, The remaining distance from the current location to the guidance intersection is displayed at a predetermined position on the map screen. That is, in this embodiment, when a vehicle approaches a guidance intersection, an enlarged view showing the vicinity of the guidance intersection, that is, an enlarged view of the intersection is displayed on the map screen, and at a predetermined position of the enlarged intersection view. The remaining distance is displayed. The guidance intersection is an intersection that turns right or left or branches when the vehicle is traveling along a predetermined route.
[0063]
For this purpose, the intersection determination processing means of the guidance processing means performs intersection determination processing, reads the current location and intersection data when the vehicle is traveling along a predetermined route, and based on the current location and the coordinates of each intersection. Then, it is determined whether or not there is a guidance intersection within a predetermined distance Lf (for example, 300 [m]) from the current location. If there is a guidance intersection, the enlarged map display processing means of the guidance processing means displays an enlarged map. Processing is performed, and an enlarged intersection view is displayed for the closest one of the guidance intersections.
[0064]
In the present embodiment, the vehicle is driven along a search route as a predetermined route, and it is determined whether or not there is a guidance intersection within the distance Lf from the current location on the search route.
[0065]
The remaining distance calculation processing means of the guidance processing means performs remaining distance calculation processing, and calculates the remaining distance from the current location to the guidance intersection based on the coordinates of the current location and the guidance intersection.
[0066]
Next, a flowchart will be described.
Step S1: A destination is set.
Step S2: Route search processing is performed.
Step S3: Route guidance is started.
Step S4: It is determined whether or not there is a guidance intersection within a predetermined distance Lf from the current location. If there is a guidance intersection within a predetermined distance Lf from the current location, the process proceeds to step S5, and if not, the process ends.
Step S5: An enlarged view display process is performed and the process is terminated.
[0067]
Next, the operation of the enlarged view display process in step S5 will be described.
[0068]
FIG. 3 is a first diagram showing a subroutine of an enlarged map display process in the embodiment of the present invention, FIG. 4 is a second diagram showing a subroutine of an enlarged map display process in the embodiment of the present invention, and FIG. FIG. 6 is a second diagram illustrating an example of an enlarged intersection view in the embodiment of the present invention, and FIG. 7 is an illustrative diagram of the embodiment of the present invention. FIG. 8 is a fourth diagram showing an example of an enlarged intersection in the embodiment of the present invention, and FIG. 9 is an example of an enlarged enlarged view of the intersection in the embodiment of the present invention. FIG. 10 is a sixth diagram illustrating an example of an enlarged intersection in the embodiment of the present invention. FIG. 11 is a seventh diagram illustrating an example of the enlarged intersection in the embodiment of the present invention. FIG. 12 shows an eighth example of an enlarged intersection view in the embodiment of the present invention. FIG 13 is a ninth diagram showing an example of an intersection enlarged view of the embodiment of the present invention.
[0069]
When the route guidance is started, a map screen is formed on the display unit 35 (FIG. 1), a predetermined route on the map screen is displayed as a search route, and a direction, place name, time, etc. Is displayed. Then, a mark indicating the vehicle position and the vehicle direction, that is, a vehicle position display mark is displayed on the searched route.
[0070]
Then, the enlarged map display processing means determines whether or not the guidance intersection within the distance Lf from the current location on the search route Rt1 is a continuous (plural) intersection, and if it is a continuous intersection, the enlarged map display processing means Set the continuous intersection flag to 1. In this case, since the guidance intersection m2 in FIGS. 5 to 9 does not constitute a continuous intersection on the searched route Rt1, 1 is not set in the continuous intersection flag.
[0071]
Subsequently, the initial enlarged map display processing means of the enlarged map display processing means performs an initial enlarged map display process, reads the intersection data for the guidance intersection from the data recording unit 16, reads the remaining distance, and reads the intersection data and Based on the remaining distance, an intersection enlarged view in an initial state as shown in FIG. 5, that is, an initial enlarged view is created. In the present embodiment, the initial enlarged view is created so that the traveling direction of the vehicle is directed upward.
[0072]
In the initial enlarged view, in addition to displaying the search route Rt1 extending in the vertical direction at the center, the vehicle position display mark mp and an area for displaying the remaining distance at that time, that is, the remaining distance display An area m1, a guidance intersection m2 on the searched route Rt1, a mark m3 representing a main facility adjacent to the guidance intersection, and the like are displayed at predetermined positions in the upper half of the initial enlarged view. If necessary, the area indicating the lane display of the guidance intersection, the name of the guidance intersection, and the like can be displayed at the corner of the upper corner of the initial enlarged view. The remaining distance display area m1 is at a first initial position set in advance at the lower end of the initial enlarged view, and the vehicle position display mark mp is at the lower end of the initial enlarged view at the remaining distance display area m1. It is displayed at a preset second initial position below. In the present embodiment, only a part of the vehicle position display mark mp is displayed, but the entire vehicle position display mark mp can also be displayed.
[0073]
Subsequently, the image processing means of the initial enlarged view display processing means performs image processing and calculates a scale so that the initial enlarged view can be displayed in an enlarged view display area having a preset size. Based on a predetermined drawing method, the initial enlarged view is reduced or enlarged at a scale based on the scale. The enlarged view display area is set so that a map around the guidance intersection m2 and a part of the vehicle position display mark mp before the guidance intersection m2 by a predetermined distance Lf can be displayed.
[0074]
Subsequently, the screen display processing means of the initial enlarged view display processing means performs screen display processing, forms an enlarged view display screen on the display unit 35, and displays the initial enlarged view on the enlarged view display screen.
[0075]
Meanwhile, the remaining distance display processing means of the enlarged view display processing means performs the remaining distance display processing, reads the remaining distance, and displays the remaining distance at that time in the remaining distance display area m1 at the first initial position. The vehicle position display mark mp is continuously displayed at the second initial position.
[0076]
Next, the vehicle position display processing means of the enlarged view display processing means performs the vehicle position display processing, reads the remaining distance, and the remaining distance is a first threshold value ψ1 (for example, 150 [m ]) Determine whether or not: When the remaining distance is equal to or less than the first threshold ψ1, the vehicle position display processing means calculates screen coordinates representing the position on the enlarged intersection map according to the coordinates of the current location, as shown in FIG. The own vehicle position display mark mp is moved upward according to the coordinates, that is, moved to the guidance intersection m2 side and displayed.
[0077]
During this time, the remaining distance display area m1 is continuously displayed at the first initial position, and the remaining distance display processing means reads the remaining distance at that time and displays the remaining distance in the remaining distance display area m1. As the host vehicle position display mark mp moves toward the guidance intersection m2, the remaining distance display area m1 and the host vehicle position display mark mp overlap each other. The remaining distance display area m1 is displayed with priority over the vehicle position display mark mp so that it can be read. That is, as shown in FIG. 6, the vehicle position display mark mp is displayed so as to move below the remaining distance display area m1.
[0078]
Subsequently, the remaining distance display processing means determines whether or not the remaining distance display area m1 and the own vehicle position display mark mp overlap, and if the remaining distance display area m1 and the own vehicle position display mark mp overlap. When it disappears, as shown in FIGS. 7-9, the remaining distance display area m1 is moved according to the own vehicle position display mark mp. For this purpose, the remaining distance display processing means reads the screen coordinates on the enlarged intersection view of the vehicle position display mark mp, and sets the remaining distance display area m1 at the position of the screen coordinates below the distance set by the screen coordinates. Displayed following the vehicle position display mark mp.
[0079]
Subsequently, the remaining distance display processing means reads the remaining distance and determines whether or not the remaining distance is equal to or smaller than a second threshold ψ2 (for example, 20 [m]) smaller than the first threshold ψ1. When the remaining distance is equal to or smaller than the second threshold ψ2, the display of the remaining distance is stopped and the remaining distance display area m1 is erased. Thereafter, the vehicle position display processing means calculates the screen coordinates on the enlarged intersection map according to the coordinates of the current location, and moves and displays the vehicle position display mark mp to the position of the screen coordinates.
[0080]
Next, the enlarged map display processing means determines whether or not the vehicle has passed the guidance intersection m2 based on the coordinates of the current location and the guidance intersection m2. When the vehicle passes through the guidance intersection m2, the enlarged view display processing means determines whether 1 is set in the continuous intersection flag. In this case, since the guidance intersection m2 does not constitute a continuous intersection on the searched route Rt1, the continuous intersection flag is not set to 1. Accordingly, the enlarged map display processing means cancels the display of the enlarged intersection map and deletes it from the map screen.
[0081]
By the way, as shown in FIGS. 10 to 13, when the distance between the guidance intersections m2 and m7 within the distance Lf from the current location on the searched route Rt2, that is, when the distance between the intersections is shorter than a predetermined threshold, the guidance intersection m2, A continuous intersection is formed by m7. Therefore, 1 is set in the continuous intersection flag by the enlarged map display processing means.
[0082]
In this case, the remaining distance display processing means displays the remaining distance display area m4 as the first remaining distance display area while following the vehicle position display mark mp until the vehicle passes the guidance intersection m2. The first remaining distance from the vehicle position to the guidance intersection m2 is displayed in the remaining distance display area m4. The remaining distance display processing means reads the distance between the intersections with reference to the intersection data, and displays the remaining distance as a second remaining distance display area at a predetermined position between the guide intersections m2 and m7 in the enlarged intersection view. An area m5 is displayed, and the distance between the intersections is displayed in the remaining distance display area m5 as a second remaining distance from the guidance intersection m2 to the guidance intersection m7.
[0083]
When the vehicle passes through the guidance intersection m2, since the continuous intersection flag is set to 1, the enlarged view display processing means continues to display the enlarged intersection view. Further, as shown in FIGS. 11 and 12, the vehicle position display processing means calculates screen coordinates representing the position on the enlarged intersection according to the coordinates of the current location, and displays the vehicle position display mark mp according to the screen coordinates. , To the left, that is, moved to the guidance intersection m7 side and displayed.
[0084]
The remaining distance display processing means deletes the remaining distance display area m4 when the vehicle passes through the guidance intersection m2, and from the vehicle position to the guidance intersection m7 until the vehicle passes through the guidance intersection m7. The remaining distance is read and displayed in the remaining distance display area m5. The remaining distance display area m5 is displayed at the same position until the vehicle passes the guidance intersection m7. Further, the remaining distance display area m5 is displayed in gray out until the vehicle passes the guidance intersection m2.
[0085]
Next, the enlarged map display processing means determines whether or not the vehicle has passed the guidance intersection m7 based on the coordinates of the current location and the guidance intersection m7. When the vehicle passes through the guidance intersection m7, the remaining distance display processing means erases the remaining distance display area m5 as shown in FIG. The enlarged map display processing means cancels the display of the enlarged intersection map and erases it from the map screen.
[0086]
Thus, in the present embodiment, the remaining distance at that time is displayed in the remaining distance display areas m1, m4, and m5 while counting down the number as the vehicle travels. Not only can it be recognized, but there is no need to read the scale, so the work can be simplified.
[0087]
Further, since the remaining distance display areas m1 and m4 are displayed following the own vehicle position display mark mp as the own vehicle position display mark mp moves, the shape of the road on which the vehicle is driven, the guidance intersection m2, The remaining distance can be easily recognized while recognizing the state of m7. Therefore, it is possible to shorten the time for staring at the map screen and concentrate on driving.
[0088]
Next, a flowchart will be described.
Step S5-1: It is determined whether the intersection is a continuous intersection. If it is a continuous intersection, the process proceeds to step S5-2. If it is not a continuous intersection, the process proceeds to step S5-3.
Step S5-2: Set 1 to the continuous intersection flag.
Step S5-3: An initial enlarged view is displayed.
Step S5-4: It is determined whether the remaining distance is equal to or less than the first threshold value ψ1. If the remaining distance is equal to or less than the first threshold ψ1, the process proceeds to step S5-5, and if the remaining distance is longer than the first threshold ψ1, the process returns to step S5-3.
Step S5-5 The own vehicle position display mark mp is moved.
Step S5-6: It is determined whether or not the remaining distance display area m1 and the vehicle position display mark mp are no longer overlapped. If the remaining distance display area m1 and the vehicle position display mark mp no longer overlap, the process proceeds to step S5-7, and if they overlap, the process returns to step S5-5.
Step S5-7 The remaining distance display area m1 is moved in accordance with the own vehicle position display mark mp.
Step S5-8: It is determined whether or not the remaining distance is equal to or smaller than the second threshold ψ2. If the remaining distance is equal to or smaller than the second threshold ψ2, the process proceeds to step S5-9. If the remaining distance is longer than the second threshold ψ2, the process returns to step S5-7.
Step S5-9: The remaining distance display area m1 is deleted.
Step S5-10 The own vehicle position display mark mp is moved.
Step S5-11: It is determined whether or not the vehicle has passed the guidance intersection m2. When it passes through the guidance intersection m2, the process proceeds to step S5-12, and when it does not pass, the process returns to step S5-10.
Step S5-12: It is determined whether or not 1 is set in the continuous intersection flag. If 1 is set in the continuous intersection flag, the process proceeds to step S5-13. If not, the process proceeds to step S5-16.
Step S5-13 The remaining distance to the guidance intersection m7 is displayed.
Step S5-14: It is determined whether or not the vehicle has passed the guidance intersection m7. When it passes through the guidance intersection m7, it progresses to step S5-15, and when it does not pass, it returns to step S5-13.
Step S5-15: The remaining distance display area m5 is deleted.
Step S5-16 Cancels the display of the enlarged intersection and returns.
[0089]
In the present embodiment, when the vehicle approaches the guidance intersection, an enlarged intersection view is displayed, and the remaining distance is displayed in the enlarged intersection view. However, in other embodiments, the intersection is displayed. The remaining distance is displayed on the map screen without displaying an enlarged view.
[0090]
Therefore, the intersection determination processing means of the guidance processing means performs an intersection determination process, determines whether there is an intersection that passes next, and if there is an intersection that passes next, the remaining distance calculation process of the guidance processing means The means performs a remaining distance calculation process and calculates a remaining distance from the current location to the guidance intersection.
[0091]
Next, the guidance processing means displays the searched route Rt1, the vehicle position display mark mp, the remaining distance display area m1, the guidance intersection m2, and the like on the map screen as in FIG.
[0092]
Subsequently, the vehicle position display processing means of the guidance processing means performs the vehicle position display processing and moves the vehicle position display mark mp according to the coordinates of the current location. During this time, the remaining distance display processing means of the guidance processing means continues to display the remaining distance display area m1 at the first initial position.
[0093]
When the remaining distance display area m1 and the vehicle position display mark mp no longer overlap, the remaining distance display area m1 is aligned with the vehicle position display mark mp as the vehicle position display mark mp moves. Moved.
[0094]
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.
[0095]
【The invention's effect】
As described above in detail, according to the present invention, when the own vehicle position display mark and the remaining distance display area do not overlap, the remaining distance display area is displayed following the own vehicle position display mark. Therefore, the remaining distance can be easily recognized while recognizing the shape of the road on which the vehicle is driven and the state of the guide point.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a navigation system in an embodiment of the present invention.
FIG. 2 is a main flowchart showing the operation of the navigation system in the embodiment of the present invention.
FIG. 3 is a first diagram showing a subroutine of enlarged view display processing in the embodiment of the present invention.
FIG. 4 is a second diagram showing a subroutine of enlarged view display processing in the embodiment of the present invention.
FIG. 5 is a first diagram showing an example of an enlarged intersection view in the embodiment of the present invention.
FIG. 6 is a second diagram showing an example of an enlarged intersection view in the embodiment of the present invention.
FIG. 7 is a third diagram showing an example of an enlarged intersection view in the embodiment of the present invention.
FIG. 8 is a fourth diagram showing an example of an enlarged intersection view in the embodiment of the present invention.
FIG. 9 is a fifth diagram showing an example of an enlarged intersection view in the embodiment of the present invention.
FIG. 10 is a sixth diagram showing an example of an enlarged intersection view in the embodiment of the present invention.
FIG. 11 is a seventh diagram illustrating an example of an enlarged intersection view according to the embodiment of the present invention.
FIG. 12 is an eighth diagram illustrating an example of an enlarged intersection view in the embodiment of the present invention.
FIG. 13 is a ninth diagram showing an example of an enlarged intersection view in the embodiment of the present invention.
[Explanation of symbols]
14 Navigation device
17 Navigation processing part
35 Display section
43 Network
51 Information Center
53 servers
m1, m4, m5 Remaining distance display area
m2, m7 guided intersection
mp Own vehicle position indication mark
Rt1, Rt2 search route

Claims (5)

An information acquisition processing means for acquiring the Navi information, a display processing means for displaying a map on the display unit based on the navigation information, when it is caused to travel along the vehicle in the predetermined path, the predetermined guide point which has a enlarged view display processing means for displaying an enlarged view, the enlarged view display processing means, a remaining distance display area for displaying the remaining distance from the vehicle position mark and the current position indicating the current position to the guidance point Is displayed at respective initial positions on the enlarged view, initial enlarged view display processing means, own vehicle position display processing means for moving and displaying the own vehicle position display mark as the vehicle travels, and the own vehicle wherein the remaining distance display area comprise a remaining distance display processing means for displaying said allowed to follow the vehicle position mark when the position indication mark and said remaining distance display area is no longer overlap Navigation system. Before chopped distance, navigation system according to claim 1 which is displayed while counting down the digits with the running of the vehicle. The initial enlarged map display processing means displays the remaining distance display area at a first initial position at the lower end of the enlarged view, and the vehicle position display mark at a second initial position below the remaining distance display area. The navigation system according to claim 1 or 2 . The expanded view display processing means, when the guide point is a continuous crossing comprising a plurality of guidance intersection, one of the claims 1 to 3 display the remaining distance display area for displaying the distance between the guidance intersection The navigation system according to claim 1 . The computer, information acquisition processing means for acquiring the navigation information, display processing means for displaying a map on the display unit based on the navigation information, and when it is caused to travel along the vehicle in the predetermined path, predetermined guide together to function as an enlarged view display processing means for displaying an enlarged view for a point, the enlargement display processing unit, the remaining distance display for displaying a remaining distance from the vehicle position mark and the current position indicating the current position to the guidance point initial enlarged view display processing means, the vehicle position display processing unit for displaying by moving the vehicle position mark with the traveling of the vehicle to view the area to their initial positions on the diagram the enlargement, and the remaining distance display process for displaying the remaining distance display area is follow the vehicle position mark when the vehicle position mark and the remaining distance display area is no longer overlap Program, characterized in that it comprises a stage.

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