JP4578218B2 - NAVIGATION DEVICE, NAVIGATION METHOD, NAVIGATION PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM - Google Patents

Description

  The present invention relates to a navigation device, a navigation method, a navigation program, and a computer-readable recording medium. However, use of the present invention is not limited to the above-described navigation device, navigation method, navigation program, and computer-readable recording medium.

  In recent years, navigation apparatuses that perform so-called route guidance that guides an optimal route to a destination using screen display, voice, or the like have become widespread.

  Conventionally, in such a navigation apparatus, information related to traffic jams (congestion information) is appropriately acquired at the time of route guidance, and a new guidance route (new route) preferable to the currently guided guidance route (original route) based on the obtained traffic jam information. There is one that realizes a function of so-called dynamic route change that re-searches (route) and guides the new route instead of the original route (see, for example, Patent Document 1).

JP 2001-227965 A

  The factors (re-search trigger) that require the dynamic route change as described above include not only the occurrence of traffic jams, but also, for example, closed traffic due to construction and traffic restrictions according to time zones.

  When such a re-search trigger occurs in the original route, the user is prohibited from passing the original route regardless of the intention of the user. However, in the technique described in Patent Document 1, the original route is Despite the dynamic route change resulting from the prohibition of traffic, this original route is also displayed as a selectable route candidate, so information that is not worth selecting is also considered as other information. Similarly, a driver's attention to the screen is urged and an opportunity for a selection operation is intentionally created, and a problem that the attention regarding the driving operation is neglected is an example.

  Further, in route guidance, it is required to effectively use a limited display space and to promptly and accurately transmit guidance information to the driver. However, the technology described in Patent Document 1 Since the route and the original route are displayed on the same screen, the space used for route guidance is reduced, and the display of guidance information such as right and left turn instructions that should be displayed is limited as an example. .

  The navigation device according to the first aspect of the present invention displays on a display screen route search means for searching for a guide route of a moving body to a destination point, and information on the guide route searched by the route search means. A traffic information acquisition means for acquiring road traffic information indicating road traffic conditions, including guidance means for performing route guidance according to the road, traffic prohibition information indicating the location of a traffic prohibition location prohibiting road traffic, and the traffic information acquisition When the road traffic information acquired by the means includes a determination means for determining whether a factor that requires the change of the guidance route is included, and a factor that the determination means needs to change the guide route If it is determined, the search means for causing the route search means to re-search for a new guide route different from the guide route, and the determination means changes the guide route. If it is determined that the necessary factor is included, if the factor is the passage prohibition point on the guidance route, information prompting the user to confirm the change to the new guidance route is displayed on the display screen, Display control means for displaying, on the display screen, information indicating that the user selects either the guide route or the new guide route when the factor is not the prohibited passage on the guide route. It is characterized by that.

  According to a fourth aspect of the present invention, the navigation method of the navigation device mounted on the mobile body is searched by a route search step for searching for a guide route of the mobile body to the destination and the route search step. Road traffic information indicating a road traffic situation, including a guidance process for guiding a route by displaying information on the guidance route on a display screen, and a traffic prohibition information indicating a location where a traffic prohibition portion prohibits road traffic. A traffic information acquisition step to be acquired; a determination step for determining whether or not the road traffic information acquired by the traffic information acquisition step includes a factor that requires the change of the guidance route; and the determination step includes If it is determined that a factor that requires a change in the guide route is included, a new guide route that is different from the guide route for the route search step When the re-search step for re-searching and the determination step determine that the factor that requires the change of the guide route is included, if the factor is the passage prohibition point on the guide route, the new guide route Information prompting the user to confirm the change to the display is displayed on the display screen, and when the factor is not the prohibited passage on the guidance route, the user selects either the guidance route or the new guidance route And a display control step for displaying information to the effect on the display screen.

  A navigation program according to claim 5 causes a computer to execute the navigation method according to claim 4.

  According to a sixth aspect of the present invention, a computer-readable recording medium records the navigation program according to the fifth aspect.

  Exemplary embodiments of a navigation device, a navigation method, a navigation program, and a computer-readable recording medium according to the present invention will be described below with reference to the accompanying drawings. The present embodiment shows an application example to a car navigation device that is used by being mounted on an automobile, for example, as a preferred embodiment of a navigation device, a navigation method, a navigation program, and a computer-readable recording medium. .

(Embodiment)
(Functional configuration of navigation device)
First, the contents of the navigation device according to the embodiment of the present invention will be described. FIG. 1 is a block diagram showing an example of a functional configuration of a navigation device according to an embodiment of the present invention. A navigation device according to an embodiment of the present invention is provided in a vehicle or the like. The vehicle includes a four-wheeled vehicle and a two-wheeled vehicle. Hereinafter, a vehicle equipped with a navigation device according to an embodiment of the present invention will be described as the own vehicle. In the present embodiment, a moving body is realized by the own vehicle.

  In FIG. 1, a navigation device 100 includes a route search unit 101, a guidance unit 102, a traffic information acquisition unit 103, a re-search unit 104, a prohibition determination unit 105, a display control unit 106, a display unit 107, And a movement determination unit 108.

  The route search unit 101 searches for a guidance route that connects the current location and the destination location. The search for the optimum guidance route by the route search unit 101 is performed using various known route search methods. Although the description is omitted because it is a known technique, for example, the Dijkstra method can be used as a route search method. The route search unit 101 searches for a guidance route that prioritizes conditions with high priority in consideration of various conditions such as distance, road type (paid or free), and ease of travel.

  The guidance unit 102 performs route guidance according to the guidance route searched by the route search unit 101. Here, route guidance by the guidance unit 102 is performed with display on the display screen. The display on the display screen is controlled by the display unit 107. The route guidance by the guiding unit 102 may be performed with voice guidance in addition to the display on the display screen.

  The traffic information acquisition unit 103 acquires road traffic information (traffic information) on a guide route that is guided by the guide unit 102. The road traffic information in the present embodiment is information indicating a road traffic situation. This road traffic information includes traffic prohibition information indicating the location of a traffic prohibition location that prohibits road traffic.

  Based on the road traffic information acquired by the traffic information acquisition unit 103, the re-search unit 104 causes the route search unit 101 to perform a re-search of the guidance route as necessary. Specifically, the route search unit 101 is caused to perform a re-search when a traffic jam location occurs in the guidance route or when a traffic prohibition location such as traffic closure or time regulation occurs.

  The prohibition determination unit 105 determines whether or not a prohibited passage is present on the guidance route based on the prohibition information included in the road traffic information acquired by the traffic information acquisition unit 103 and the information on the guidance route searched by the route search unit 101. Judge whether it exists or not.

  The display control unit 106 changes display control of information to be displayed on the display screen regarding the guidance route searched by the route search unit 101 based on the determination result by the prohibition determination unit 105.

  The display unit 107 has a display screen on which characters, images, and the like are displayed based on various display data. The display unit 107 is controlled by a display control unit 106, which will be described in detail later, and displays predetermined information on the display screen.

  The movement determination unit 108 determines whether the host vehicle is moving or stopped. Specifically, for example, when the navigation apparatus 100 is provided in a vehicle or the like, it is determined whether the vehicle or the like is moving (running) or stopped.

(Navigation method processing procedure)
Next, a processing procedure of the navigation method according to the embodiment of the present invention will be described. FIG. 2 is a flowchart showing an example of a processing procedure of the navigation method according to the embodiment of the present invention. The processing of the navigation method shown in FIG. 2 is performed on the condition that the current location of the host vehicle is acquired and the destination location is set.

  In the flowchart of FIG. 2, first, a guidance route connecting the acquired current point and the set destination point is searched (step S201), and route guidance is started according to the searched guidance route (step S202). This route guidance ends when it is determined that the destination point has been reached (step S203: Yes).

  On the other hand, if it is determined in step S203 that the destination point has not been reached (step S203: No), it is determined whether road traffic information has been acquired (step S204), and road traffic information has been acquired. If it is determined that there is not (step S204: No), the process returns to step S203.

  On the other hand, if it is determined in step S204 that the road traffic information has been acquired (step S204: Yes), the road is guided to the currently guided route based on the traffic prohibition information included in the acquired road traffic information. It is determined whether there is a prohibited part (step S205).

  If it is determined that there is a prohibited passage on the guidance route that is currently being guided (step S205: Yes), information on the guidance route that avoids the prohibited passage is displayed on the display screen based on the determination result (step S205). S206), the process returns to step S203. That is, since the information displayed on the display screen in step S206 is information related to the guidance route that avoids the passage prohibition point, the information related to the guidance route that has been used to guide the route is not included.

  On the other hand, when it is determined that there is no passage prohibition on the currently guided route (step S205: No), other information on the guided route is displayed on the display screen based on the determination result (step S207). ), The process returns to step S203.

  The information displayed on the display screen in step S207 is different from the information displayed on the display screen in step S206. The information displayed on the display screen in step S207 may include information on the guidance route that has been used to guide the route. For example, in step S207, it is possible to display information related to the guidance route different from the guidance route during the route guidance in addition to the guidance route during the route guidance as information about the guidance route.

  As described above, according to the navigation device 100 of the present embodiment, for example, when there is a prohibited passage on the guidance route, the guidance route where the prohibited passage is present is not displayed and the prohibited passage is avoided. Only the information regarding the guidance route to be displayed can be displayed on the display screen.

  Accordingly, it is possible to promptly guide the driver whether or not the change of the guidance route during route guidance (dynamic route change) is necessary or not. In addition, this eliminates unnecessary operation for changing the guidance route, and makes it possible to perform route guidance in consideration of safety.

(Hardware configuration of navigation device 100)
Next, a hardware configuration of the navigation device 100 according to the embodiment of the present invention will be described with reference to FIG. FIG. 3 is a block diagram showing a hardware configuration of the navigation apparatus 100 according to the embodiment of the present invention. In the present embodiment, specifically, a case where the navigation device 100 is provided in, for example, a vehicle will be described.

  In FIG. 3, a navigation device 100 includes a CPU (Central Processing Unit) 301, a ROM (Read Only Memory) 302, a RAM (Random Access Memory) 303, an HDD (Hard Disk Drive) 304, and an HD (Hard Disk) 305. A CD / DVD drive 306, a CD / DVD 307 as an example of a removable recording medium, an input I / F (interface) 308, an input key 309, a remote controller 310, and a video I / F (interface) 311. , Display (or touch panel) 312, audio I / F 313, speaker 314, microphone 315, communication I / F (interface) 316, GPS receiver 317, movement speed sensor 18, an angular velocity sensor 319, the travel distance sensor 320, a tilt sensor 321, and a. The components 301 to 321 included in the navigation device 100 are connected to each other by a bus 330.

  The CPU 301 governs overall control of the navigation device 100, and executes various arithmetic processes according to the control program, thereby comprehensively driving and controlling each unit included in the navigation device 100. The CPU 301 executes the processes shown in FIGS. 5 and 6 to be described later with the functions shown in the functional block diagram of FIG.

  The ROM 302 stores fixed data such as a boot program. The data stored in the ROM 302 can be rewritten by a user operation, but is not erased by turning off the power.

  The RAM 303 stores variable data in a rewritable manner and functions as a work area for the CPU 301. The RAM 303 may be a volatile memory from which data stored when the power is turned off is erased, or may be a nonvolatile memory by being backed up by a battery or the like.

  The HDD 304 controls reading / writing of data with respect to the HD 305 according to the control of the CPU 301. The HD 305 accepts data writing under the control of the HDD 304 and stores the written data in a nonvolatile manner.

  In this embodiment, the navigation program is stored (recorded) in the HD 305. For this reason, in this embodiment, a recording medium is realized by the HD 305.

  In this embodiment, the HD 305 stores map data. The map data includes background data representing features (features) such as buildings, rivers, and the ground surface, and road shape data representing the shape of the road, and is drawn in two or three dimensions on the display 312. .

  The background data includes background shape data representing the shape of the background and background type data representing the type of the background. The background shape data includes, for example, data indicating representative points of features, polylines, polygons, coordinates of features, and the like. The background type data includes, for example, text data indicating the name, address, telephone number and the like of the feature, type data indicating the type of the feature such as a building / river.

  The road shape data is data relating to a road network having a plurality of nodes and links. The node is data indicating an intersection where a plurality of roads such as a three-way intersection, a crossroad, and a five-way intersection intersect. A link is data indicating a road connecting nodes. Some links have shape complement points that allow the expression of curved roads.

  In addition, the road shape data includes traffic condition data. The traffic condition data is data indicating the characteristics of the intersection, the length (distance) of each link, the vehicle width, the traveling direction, the traffic prohibition, the road type, and the like.

  The characteristics of intersections include, for example, complex intersections such as three- and five-way intersections, intersections where roads diverge at shallow angles, intersections around destination points, highway entrances and junctions, intersections with a high route deviation rate, etc. It is done. The route departure rate can be calculated from, for example, past travel history.

  Examples of the road type include an expressway, a toll road, and a general road. In the present embodiment, the traffic prohibition included in the traffic condition data indicates that the traffic is prohibited from being periodically permitted according to the day of the week or the period, and the traffic included in the road traffic information received by the communication I / F 316. Prohibition shall indicate roads that occur irregularly and are prohibited from passing only for a predetermined period.

  In this embodiment, the map data is stored in the HD 305. However, the present invention is not limited to this, and the RAM 303 shown in FIG. 3 or a CD / DVD 307 whose details will be described later may be used. The map data is not limited to being provided integrally with the hardware of the navigation device 100, and may be provided outside the navigation device 100. In that case, the navigation apparatus 100 acquires map data via a network through communication I / F316, for example. The acquired map data is stored in the RAM 303 or the like.

  The CD / DVD drive 306 controls reading / writing of data with respect to the CD / DVD 307 according to the control of the CPU 301. The CD / DVD 307 is a removable portable recording medium from which data recorded under the control of the CD / DVD drive 306 is read. Note that CD is an abbreviation for Compact Disk and DVD is an abbreviation for Digital Versatile Disk.

  Note that the writable and portable recording medium is not limited to the CD / DVD 307. As a removable recording medium, in addition to the CD / DVD 307, a CD-ROM (CD-R, CD-RW), MO (Magneto-Optical disk), memory card, or the like can be used. When a CD-ROM (CD-R, CD-RW), MO, memory card, or the like is used as a removable recording medium, information can be written to each storage medium and information stored in various storage media can be read. A possible dedicated drive device is used in place of the CD / DVD drive 306.

  The input I / F 308 outputs to the CPU 301 data transmitted from an input key 309 for inputting characters, numerical values, various instructions, and the like, or a remote controller 310 having a part or all of the input keys 309.

  Here, as the configuration of the input key 309, various known forms such as a push button switch for detecting physical depression / non-depression, a touch panel, a keyboard, and a joystick can be employed. The input key 309 may be configured in any one of the various forms described above, or may be configured in a plurality of forms. The user inputs data to the input I / F 308 by appropriately performing an input operation according to the form of the input key 309.

  In this specification, a person who drives a vehicle (own vehicle) on which the navigation device 100 is mounted is a driver, and a rider in the own vehicle is a user. Unless otherwise noted, the user includes a driver or may be a driver.

  An example of data input by operating the input key 309 is a destination point. Specifically, for example, when the navigation device 100 is provided in a vehicle or the like, a point to be reached by a person on the vehicle is set.

  Here, for example, when a touch panel is adopted as the form of the input key 309, the touch panel is stacked on the display surface side of the display 312. The input data is recognized by managing the display timing on the display 312, the operation timing on the touch panel (input key 309), and the position coordinates thereof. In this manner, by adopting the touch panel stacked on the display 312 as the form of the input key 309, a large amount of data can be input without increasing the form of the input key 309. As the touch panel, various known touch panels such as a resistance film type and a pressure sensitive type can be used.

  A movement speed sensor 318, an angular speed sensor 319, a travel distance sensor 320, and an inclination sensor 321 are connected to the input I / F 308. Data output from these sensors 318 to 321 is also input to the input I / F 308. Each sensor 318 to 321 realizes the following functions. The CPU 301 determines whether the host vehicle is moving or stopped based on data output from the sensors 318 to 321. For this reason, in the present embodiment, the movement determination unit 108 in the above-described embodiment is realized by the CPU 301 and the sensors 318 to 321.

  The movement speed sensor 318 detects the movement speed of the route search device 100. When the route search device 100 is installed in a vehicle, it is detected from the output side shaft of the transmission. The angular velocity sensor 319 detects each speed when the host vehicle rotates, and outputs each speed data and relative azimuth data. The travel distance sensor 320 calculates the number of pulses per one rotation of the wheel by counting the number of pulses of a pulse signal with a predetermined period output along with the rotation of the wheel, and the travel distance based on the number of pulses per one rotation. Output data. The inclination sensor 321 detects the inclination angle of the road surface and outputs inclination angle data.

  In the navigation apparatus 100 according to the present embodiment, it is determined whether the host vehicle is traveling or stopped based on changes in output from the sensors 318 to 321 accompanying changes in the traveling state of the host vehicle.

  The video I / F 311 is connected to a display 312 for video display. Specifically, the video I / F 311 includes, for example, a graphic controller that controls the entire display 312, a buffer memory such as a VRAM (Video RAM) that temporarily stores image information that can be displayed immediately, and a graphic controller. Based on the output image data, the display 312 is configured by a control IC or the like.

  The display 312 displays icons, cursors, menus, windows, or various data such as characters and images. The display 312 displays map data and route guidance data stored in the HD 305 (see FIG. 7). As this display 312, for example, a CRT (Cathode Ray Tube), a TFT liquid crystal display, a plasma display, or the like can be adopted. In the present example, the display unit 107 in the above-described embodiment is realized by the video I / F 311 and the display 312.

  The audio I / F 313 is connected to an audio output speaker. Specifically, the audio I / F 313 includes, for example, a D / A converter that performs D / A conversion of audio digital data, an amplifier that amplifies an audio analog signal output from the D / A converter, and audio analog data And an A / D converter that performs A / D conversion. The speaker 314 outputs sound. The microphone 315 inputs sound from the outside.

  The communication I / F 316 is a communication module that performs wireless communication with a communication server (not shown) via a base station (not shown). The communication I / F 316 has a configuration similar to that of a general-purpose mobile phone, for example, and can adopt a PDC (Personal Digital Cellular Communication System) method, a PHS (Personal Handyphone System) method TDMA, TDD, or CDMA configuration. . In addition, the communication I / F 316 has a configuration in which a general-purpose mobile phone and an input I / F 308 are wired-connected (interface connection), or a general-purpose mobile phone and an input I / F 308 that have a weak wireless transmission / reception unit. It is good also as adopting.

  In this embodiment, road traffic information such as traffic jams and traffic restrictions is received via the communication I / F 316. For this reason, in this embodiment, the traffic information acquisition unit 103 in the above-described embodiment is realized by the communication I / F 316. In the present embodiment, road traffic information is received regularly (even if irregular). The reception of the road traffic information via the communication I / F 316 may be performed at the timing when the road traffic information is distributed from the VICS (Vehicle Information and Communication System) center, or the road traffic information is periodically transmitted to the VICS center. You may do it by requesting. The communication I / F 316 can be realized as, for example, an FM tuner, a VICS / beacon receiver, and other communication devices.

  Although detailed description is omitted because it is a well-known technique, “VICS” is a real-time transmission of road traffic information such as traffic jams and traffic regulations edited and processed at the VICS Center. This is an information communication system that displays characters and figures on an in-vehicle device. As a method of transmitting road traffic information (VICS information) edited and processed at the VICS center to the car navigation, there is a method of using “beacon” and “FM multiplex broadcasting” installed on each road. “Beacons” include “radio wave beacons” mainly used on expressways and “optical beacons” used on major general roads. When “FM multiplex broadcasting” is used, road traffic information in a wide area can be received. When using a “beacon”, it becomes possible to receive necessary road traffic information at a location where the vehicle is located, such as detailed information on the most recent road based on the vehicle location.

  The GPS receiver 317 receives a radio wave from a GPS satellite (not shown) and obtains the current position (current position) of the own vehicle. Specifically, for example, when the navigation apparatus 100 is provided in a vehicle or the like, the current position where the vehicle or the like is located is acquired. For example, when the navigation device is carried by a person, the current position where the person is located is acquired. GPS is an abbreviation for Global Positioning System, and is a system for accurately obtaining a position on the ground by receiving radio waves from four or more satellites. In addition, since it is a well-known technique, description about GPS is abbreviate | omitted. The GPS receiver 317 includes an antenna for receiving radio waves from a satellite, a tuner that demodulates the received radio waves, an arithmetic circuit that calculates a position based on the demodulated data, and the like.

  In this embodiment, the GPS positioning data obtained by the GPS receiver 317 and the absolute direction data of the traveling direction of the own vehicle are obtained from the moving speed sensor 318, the angular speed sensor 319, the travel distance sensor 320, and the inclination sensor 321. The current location is acquired by correcting the data. This current position includes data regarding speed and acceleration, in addition to the three-dimensional information (longitude, latitude, height) of the navigation device 100 and the traveling direction.

(Functional configuration of display control unit)
Next, a functional configuration of the display control unit which is characteristic in the present embodiment will be described with reference to FIG. FIG. 4 is a block diagram showing a detailed functional configuration of the display control unit 106 shown in FIG. The display control unit 106 includes a guidance information display unit 400, a candidate information display unit 401, and a change guidance information display unit 402.

  The guidance information display unit 400 controls the display unit 107 so that route guidance data such as map data indicating the guidance route, data indicating the current location, and left / right turn guidance data is displayed on the display 312 when the route guidance is described later. To do. When the guidance route is re-searched, the guidance information display unit 400 controls the video I / F 311 so that data relating to the route guidance according to the re-searched guidance route is displayed on the display 312.

  The candidate information display unit 401 functions when there is no passage-prohibited portion in the guidance route that is being routed, and candidate information related to the guidance route that is a candidate selected from the guidance routes before and after the re-search is displayed on the display 312. The display unit 107 is controlled. By the way, the case where there is no passage prohibition portion in the guidance route that is being routed while re-searching for the guidance route indicates that the guidance route before the re-search can also be passed. On the other hand, it is natural that the vehicle can travel on one guide route. For this reason, it is necessary to select any one of the guidance routes before and after the re-search.

  The candidate information is information that causes the display 312 to display the guidance route before and after the re-search as a route on the map, or causes the display 312 to display characters indicating that the guidance route before and after the re-search is a selectable candidate. Information.

  When displaying candidate information, the candidate information display unit 401 changes information to be displayed depending on whether the navigation device 100 is moving or stopped. Specifically, when it is determined that there is a prohibited passage on the guidance route, information on the guidance route after the re-search is displayed on the display 312, and when it is determined that there is no prohibited passage on the guidance route. Information on the guidance route before and after the re-search is displayed on the display 312.

  The candidate information display unit 401 displays, as candidate information, information related to all guidance routes before and after the re-search when the movement determination unit 108 in the above-described embodiment determines that the host vehicle is stopped. A list is displayed on 312.

  The change guidance information display unit 402 displays on the display 312 information for instructing to change the dynamic route when performing route guidance according to the re-searched guidance route (when a dynamic route change occurs). The display unit 107, that is, the video I / F 311 and the display 312 are controlled in such a manner.

  The guidance information display unit 400, the candidate information display unit 401, and the change guidance information display unit 402 stop whether there is a passage prohibition on the guidance route that is being routed and whether the navigation device 100 is moving. It works selectively according to whether it is.

  For example, the change guidance information display unit 402 functions when there is a passage prohibition in the guidance route that is being routed and the vehicle is stopped. As a result, the display 312 displays that the dynamic route change is to be performed. Further, for example, when there is a passage prohibition in the guidance route during route guidance and the own vehicle is moving, the change guide information display unit 402 does not function, and the guidance information display unit 400 functions. The fact that the dynamic route is to be changed is guided only by voice.

  In addition, for example, when there is no passage prohibition in the guidance route during route guidance, and the own vehicle is stopped, the candidate information display unit 401 functions. As a result, the candidate information is displayed on the display 312. Further, for example, when there is a passage prohibition in the guidance route that is being routed and the vehicle is moving, the candidate information display unit 402 and the guidance information display unit 400 function, and the route currently being executed Data relating to the guidance is displayed on the display 312. When the vehicle is stopped, the function of the candidate information display unit 401 is given priority over the guidance information display unit 400. On the other hand, when the vehicle is moving, the function of the guidance information display unit 400 is given priority over the candidate information display unit 401.

  The functions of the guidance information display unit 400, candidate information display unit 401, and change guidance information display unit 402 in the display control unit 106 as described above are recorded in the ROM 302, RAM 303, HD 305, CD / DVD 307, etc. shown in FIG. This is implemented by the CPU 301 executing the program. Therefore, in this embodiment, specifically, the display control unit 106 in the above-described embodiment is realized by the CPU 301, the ROM 302, the RAM 303, the HD 305, and the CD / DVD 307 shown in FIG.

(Navigation device processing procedure)
Next, a processing procedure of the navigation device according to the embodiment of the present invention will be described. 5 and 6 are flowcharts showing the processing procedure of the navigation device 100 according to the embodiment of the present invention. Specifically, the processing shown in FIGS. 5 and 6 is realized by the CPU 301 executing a program recorded in the ROM 302, RAM 303, HD 305, CD / DVD 307, etc. shown in FIG.

  Here, the processing shown in FIGS. 5 and 6 is executed on condition that the normal route guidance is being performed. In this embodiment, the current point is reached from the current point based on the current point acquired by the information received by the GPS receiver 317, the destination point set by the operation of the input key 309, and the set priority. The optimum guidance route is searched, and the route guidance performed while displaying the first display screen (see the first display screen 700 shown in FIG. 7) according to the searched guidance route is defined as a normal route guidance.

  The priorities of various conditions when searching for a guidance route may be set in advance, or may be set as appropriate by the user. When the user appropriately sets the priority of various conditions when searching for a guide route, it is performed by operating the input key 309 or the like.

  The route search is realized by the CPU 301 executing a program recorded in the ROM 302, RAM 303, HD 305, CD / DVD 307, or the like. Therefore, in this embodiment, the route search unit 101 in the above-described embodiment is realized by the CPU 301, the ROM 302, the RAM 303, the HD 305, and the CD / DVD 307.

  The route guidance is realized by the CPU 301 executing a program recorded in the ROM 302, RAM 303, HD 305, CD / DVD 307, etc., and controlling the display 312 and the speaker 314. For this reason, in the present embodiment, the CPU 301, the ROM 302, the RAM 303, the HD 305, the CD / DVD 307, the display 312 and the speaker 314 implement the guiding unit 102 in the above-described embodiment.

  When starting route guidance, it is a condition that a destination point is set. The destination point is set by, for example, operating the input key 309 or the remote control 310 shown in FIG. 3 by the user.

  In the flowchart of FIG. 5, first, the process waits until it is determined that the re-search trigger is pulled based on the data received by the communication I / F 316 (step S501: No).

  Here, the re-search trigger includes receiving road traffic information (congested traffic information included), passing through a place where there was an accident in the past, a certain period of time from the reference time, etc. It is done. In this embodiment, the re-search trigger may be any one of these, or may be all possible events.

  When it is determined that the re-search trigger has been pulled (step S501: Yes), the route guidance that is being executed at the time when it is determined that the re-search trigger has been pulled is continuously recognized and recognized by the data received by the GPS receiver 317. A guide route (route) from the current point (own vehicle position) to the destination point set at the start of guidance of the guide route is searched (step S502). Since the guidance route has already been searched at the start of the process shown in FIG. 5, the guidance route search in step S502 will be described as a re-search. Hereinafter, the guidance route will be described as “route”. 5 to 10, the guidance route is described as “route”. The route search in step S502 is also realized by the CPU 301 executing a program recorded in the ROM 302, RAM 303, HD 305, CD / DVD 307, etc., as described above.

  For example, when the re-search trigger for starting this search is “having received road traffic information”, the re-search unit 104 in the above-described embodiment causes the communication I / F 316 and the CPU 301 that have received this road traffic information to Realized.

  For example, when the re-search trigger for starting this search is “passing through a place where there has been an accident or the like in the past”, a memory such as a RAM 303 for storing that there has been an accident or the like in the past, The re-search unit 104 in the above-described embodiment is realized by the GPS receiver 317 that acquires the point and the CPU 301.

  For example, when the re-search trigger for starting the search is “a certain time has elapsed from the reference time”, a memory such as the RAM 303 that stores the reference time, a timer that counts the passage of a certain time from the reference time, The CPU 301 implements the re-search unit 104 in the above-described embodiment. Note that the timer can be easily realized by a clock function that the CPU 301 normally has.

  The guidance route to be re-searched in step S502 may be allowed to pass such as a traffic prohibition section such as a traffic stop or time regulation or a traffic jam based on the road traffic information received by the communication I / F 316, but it should be avoided. It is a guidance route that is considered to avoid the part that wants to pass. In addition, in step S502, a plurality of guidance routes that prioritize conditions with high priority are searched. Hereinafter, the guide route searched in step S502 is set as a new route, and the guide route currently being guided is set as a source route.

  Subsequently, the new route and the original route are compared to determine whether there is a different section between the new route and the original route (step S503), and there is no different section between the new route and the original route, that is, the new route. If it is determined that the route is the original route (step S503: Yes), the process returns to step S501.

  If it is determined that there is a different section between the new route and the original route (step S503: No), the re-search trigger drawn at step S502 is caused by the prohibition of traffic by executing the processing shown in FIG. It is determined whether or not there is (step S504). Details of the processing shown in FIG. 6 will be described later.

  If it is determined in step S504 that the re-search trigger drawn in step S502 is not caused by prohibition of passage (step S504: No), it is determined whether the host vehicle is traveling or stopped. (Step S505).

  When it is determined that the host vehicle is traveling (step S505: Yes), the second display screen (see the second display screen 800 shown in FIG. 8) is displayed on the display 312 instead of the first display screen 700. It is displayed (step S506), and route guidance such as a right or left turn according to the original route is continuously performed.

  On the other hand, when it is determined that the vehicle is stopped (step S505: No), a third display screen (see the third display screen 900 shown in FIG. 9) is displayed instead of the first display screen 700. It is displayed on 312 (step S507).

  In step S508, the process returns to step S505 and the host vehicle is running until it is determined that the route for guidance is determined with the second display screen or the third display screen displayed (step S508: No). The second display screen or the third display screen is displayed on the display 312 depending on whether it is present or stopped.

  If it is determined in step S508 that a route for route guidance has been determined (step S508: Yes), route guidance for the determined route is started (step S509), and the process ends.

  On the other hand, if it is determined in step S504 that the re-search trigger drawn in step S502 is caused by prohibition of passage (step S504: Yes), the process proceeds to step S510, and the vehicle is running or stopped. It is determined whether it is in the middle (step S510).

  When it is determined that the host vehicle is stopped (step S510: No), the fourth display screen (see the fourth display screen 1000 shown in FIG. 10) is displayed on the display 312 (step S511), and the route is set by the user. Until it is determined that the change has been confirmed (step S513: No), or until it is determined that the host vehicle is traveling (step S510: No), the process returns to step S510 and the host vehicle is stopped. In some cases, a fourth display screen is displayed on the display 312.

  On the other hand, if it is determined in step S510 that the host vehicle is traveling (step S510: Yes), the fact that the route to be guided has been changed is guided by voice together with the reason (step S512). This can prevent the driving operation from being hindered.

  If it is determined in step S513 that the user has confirmed that the route has been changed (step S513: Yes), or after voice guidance in step S512, guidance on the new route R2 is started (step S514), and the process is terminated.

  Note that the new route whose guidance is started in step S514 is the route with the highest priority among the plurality of new routes re-searched in step S502.

  Next, with reference to FIG. 6, description will be given of processing executed when it is determined in step S503 in FIG. 5 that there are different sections between the new route and the original route. FIG. 6 is a flowchart showing a procedure of processing executed when it is determined in step S503 in FIG. 5 that there are different sections between the new route and the original route. Note that the presence or absence of a prohibited passage in the original route is determined by the process shown in FIG. 6, that is, the process in step S504.

  The processing shown in FIG. 6, that is, step S504 is realized by processing in which the CPU 301 executes a program recorded in the ROM 302, RAM 303, HD 305, CD / DVD 307, etc. based on the road traffic information received by the communication I / F 316. For this reason, in this embodiment, the communication interface 316, the ROM 302, the RAM 303, the HD 305, the CD / DVD 307, and the CPU 301 implement the prohibition determination unit 105 in the above-described embodiment.

  In the process shown in FIG. 6, first, a different part is extracted between the new route and the original route (step S601). Hereinafter, “the difference between the new route and the original route” is referred to as “route difference”. That is, in step S601, a route difference is extracted.

  In the extracted route difference, it is determined whether or not there is a portion corresponding to the closed road in the route difference in the original route (step S602), and it is determined that there is no portion corresponding to the closed road in the route difference in the original route (Step S602: No), it is determined whether or not there is a portion corresponding to the time restriction in the route difference in the original route among the extracted route differences (Step S603).

  When it is determined that there is no portion corresponding to the road closure in the route difference in the original route (step S603: No), it is determined that the re-search trigger is caused by traffic jam (step S604), and the process is terminated.

  On the other hand, if it is determined in step S602 that there is a portion corresponding to the closed road in the route difference in the original route R1 (step S602: Yes), it is determined that the re-search trigger is caused by the closed road (step S605). ), The process is terminated.

  Further, when it is determined in step S603 that there is a portion corresponding to the time restriction in the route difference in the original route R1 (step S603: Yes), it is determined that the re-search trigger is caused by the time restriction ( Step S606), the process ends. That is, in the process of FIG. 5 described above, when the re-search trigger is “block” or “time restriction”, it is determined that the passage is prohibited.

  Next, the first display screen will be described. FIG. 7 is a diagram illustrating an example of a first display screen displayed on the display 312 by the display unit 107 during route guidance. As shown in FIG. 7, the first display screen 700 displays the original route R1 currently being guided and the triangle mark M indicating the vehicle position. The first display screen 700 displays guidance information 701 necessary for route guidance.

  Next, the second display screen will be described. FIG. 8 is an explanatory diagram showing a second display screen. As shown in FIG. 8, on the second display screen 800, in addition to the current route being guided (hereinafter described with reference R1), triangle mark M, guidance information 701, etc., information on the new route is displayed. (New route information) 801 is displayed. On the second display screen 800, as the new route information 801, for example, the difference between the new route and the original route R1 is displayed. Thus, the user can easily know what characteristics the new route has with respect to the original route R1.

  On the second display screen 800, the difference between the new route and the original route R1 is the time / distance / amount required for passing the new route and the time / distance / amount required for passing the original route R1. The difference is displayed with reference to the original route R1. The new route information 801 on the second display screen 800 is displayed in the form of characters. Further, the new route information 801 is displayed at a position that does not hinder the display of the original route R1 and the guidance information 701 (in the present embodiment, the left end of the screen).

  In addition, a route determination button 802 is displayed on the second display screen 800. In the route determination button 802, a “new route” button 802a and a “original route” button 802b are displayed. One of the “new route” button 802 a and the “original route” button 802 b can be selectively operated by the input key 309. The user determines the route to be guided by operating either the “new route” button 802a or the “original route” button 802b using the input key 309, the remote controller 310, and the touch panel 312 shown in FIG.

  Next, the third display screen will be described. FIG. 9 is an explanatory diagram showing a third display screen. As shown in FIG. 9, the third display screen 900 displays the original route R1 and the new route R2 in addition to the guidance information 701, the new route information 801, and the route determination button 802. The original route R1 and the new route R2 are displayed on a single map. For this reason, the overlapping route between the original route R1 and the new route R2 is displayed in an overlapping manner. The user operates either the “new route” button 802a or the “original route” button 802b by operating the input key 309, the remote controller 310, and the touch panel 312 shown in FIG.

  In the third display screen 900, the scale may be appropriately changed with respect to the first display screen 700 so that the route difference between the original route R1 and the new route R2 is easy to see. The original route R1 and the new route R2 are displayed differently so that they can be identified on a single map. As a method for displaying the original route R1 and the new route R2 differently, for example, the display color of the new route R2 and the display color of the original route R1, or the display line type of the new route R2 and the original route R1 are different. It is possible to change the display line type. The display line type can be changed to a dotted line / solid line, a thick line / thin line, or the like.

  In FIG. 9, the case where there is one new route R2 has been described. However, the present invention is not limited to this, and the same applies when there are a plurality of new routes R2.

  Here, as can be seen by comparing FIG. 8 and FIG. 9, according to the navigation device 100 of the present embodiment, when the vehicle is moving, there is less information than when the vehicle is stopped. The amount of information displayed on the display 312 is adjusted so as to be displayed. That is, the navigation apparatus 100 in consideration of safety can be provided by reducing the amount of information displayed when the host vehicle is moving as much as possible.

  Next, the fourth display screen will be described. FIG. 10 is an explanatory diagram showing a fourth display screen. As shown in FIG. 10, on the fourth display screen 1000, guidance information 701, new route information 801, route determination button 802, original route R1, and new route R2 are displayed.

  The route determination button 802 on the fourth display screen 1000 is different from the route determination button 802 on the third display screen 900, and the route guidance is performed on the new route R2 having the highest priority among the re-searched new routes R2. Only the “Determine” button 1001 is displayed for the purpose of guiding the user to change the password and prompting the user to confirm the change.

  That is, the case where the fourth display screen 1000 is displayed is a case where it is impossible to pass the original route R1 where the passage prohibition portion is present, and therefore the “display” button is displayed on the fourth display screen 1000. Only 1001 is displayed as the route determination button 802. This “OK” button 1001 can be operated with the input key 309. The user operates the “OK” button 1001 by operating the input key 309, the remote controller 310, and the touch panel 312 shown in FIG.

  In addition, information 1002 indicating that traffic is prohibited is displayed on the original route R1 on the fourth display screen 1000. In FIG. 10, as information 1002 indicating that traffic is prohibited, a graphic representing a sign indicating that traffic is closed is displayed. As described above, information that can be displayed in a graphic form is displayed in the form of a graphic, so that it is possible to promptly notify the driver that the route is changed and the reason.

  As described above, according to the navigation device 100 of the present embodiment, the navigation method realized by the navigation device 100, the navigation program executed by the computer included in the navigation device 100, and the recording medium for recording the navigation program, It is possible to inform the driver that a prohibited passage has occurred on the original route R1 during route guidance according to the original route R1, without the operation of the driver (or user).

  Further, according to the navigation device 100 of the present embodiment, when it is determined that there is a passage prohibition point on the original route R1, information on the new route R2 after the re-search is displayed on the display 312 and the original route R1 is displayed. When it is determined that there is no passage prohibition, information on the routes R1 and R2 before and after the re-search is displayed on the display 312, and the route must be changed because the original route R1 is prohibited. Alternatively, the driver can be guided to the driver whether or not the original route R1 is allowed to pass and the route may or may not be changed without the operation of the driver (or user).

  Further, according to the navigation device 100 of the present embodiment, when it is determined that there is a prohibited passage on the original route R1, a new route R2 different from the original route R1 is re-searched, and the new route R2 Therefore, by performing route guidance (dynamic route change), it is possible to guide the driver to a new route R2 that can be passed without causing unnecessary operations.

  Further, according to the navigation device 100 of the present embodiment, when it is determined that the vehicle is moving, guidance is given only by voice to the effect that route guidance is performed according to the new route R2 after the re-search. When it is determined that the car is stopped, guidance is provided by displaying on the display 312 to reduce the driver's gaze on the screen during driving according to driving conditions, and a route that takes safety into consideration In addition to performing guidance, the limited display space can be used effectively, and guidance information can be quickly and accurately transmitted to the driver.

  In addition, according to the navigation device 100 of the present embodiment, the vehicle is in the middle of providing guidance with information display on the display 312 because there is a passage prohibition on the original route R1 and the vehicle is stopped. When the vehicle starts moving, by switching to voice guidance, it is possible to perform appropriate guidance in consideration of safety according to the moving state of the host vehicle without burdening the driving operation.

  Further, according to the navigation apparatus 100 of the present embodiment, when it is determined that there is no passage prohibition point on the original route R1, candidate information on a route that is a candidate selected from the original route R1 and the new route R2 is displayed on the display 312. And route guidance according to the route selected from these (original route R1 or new route R2), so that more detailed information can be transmitted without hindering the driving operation. The route guidance can be performed according to the user's preference.

  Further, according to the navigation device 100 of the present embodiment, when it is determined that the host vehicle is stopped, the candidate information is displayed on the display 312 with priority over the information related to route guidance, and the host vehicle moves. If it is determined that the information is related to the route information, the information on the route guidance is displayed on the display 312 in preference to the candidate information. It is possible to perform route guidance considering the surface. In addition, the limited display space can be effectively used according to the moving state of the host vehicle, and the guidance information can be quickly and accurately transmitted to the driver.

  Further, according to the navigation device 100 of the present embodiment, when it is determined that the host vehicle is stopped, information on all the routes of the original route R1 and the new route R2 is displayed as a list on the display 312 as candidate information. Thus, more detailed information can be transmitted without hindering driving operation, and route guidance according to the situation and the preference of the driver (user) can be performed.

  In the present embodiment, the presence or absence of traffic prohibition on the original route R1 and the dynamic route change according to the running state are performed, but the present invention is not limited to this, and the presence or absence of traffic prohibition on the original route R1. It is also possible to change the dynamic route only according to the above.

  In other words, regardless of the movement status of the navigation device, if there is a prohibited passage on the original route, the route is re-searched for one new route different from the original route, and the route guidance is performed according to the re-searched new route. When there is no passage prohibition point in the original route, a navigation device that selects one route from a plurality of searched routes and performs route guidance according to the selected route may be used.

  By adopting such a navigation device, the navigation device is not limited to a navigation device that performs route guidance in conjunction with a sensor or the like provided in the own vehicle in order to determine the traveling state of the own vehicle. Even if a navigation device that is supposed to be brought into the vehicle at the time of use is used, it is necessary to change the route because the original route R1 is prohibited, or the passage is possible and the route is changed. The driver can be guided to the driver without having to change the operation without the operation of the driver (or user).

  As described above, the navigation method described in this embodiment is realized by executing a prepared navigation program on a computer such as a communication device that enables communication with a portable computer or server. can do. In this embodiment, the navigation program is described as being stored in the HD 305. However, the present invention is not limited to this, and the navigation program may be a computer-readable recording medium such as a flexible disk, CD-ROM, MO, or DVD. As long as it is recorded in By recording the navigation program on a computer-readable recording medium, the navigation program can be executed by being read from the recording medium by the computer.

  In addition, the navigation program may be a transmission medium that can be distributed via a network such as the Internet.

It is a block diagram which shows an example of a functional structure of the navigation apparatus concerning embodiment of this invention. It is a flowchart which shows an example of the procedure of the process of the navigation method concerning embodiment of this invention. It is a block diagram which shows the hardware constitutions of the navigation apparatus 100 concerning the Example of this invention. It is a block diagram which shows the functional structure of a display control part. It is a flowchart which shows the procedure of the process of the navigation apparatus concerning the Example of this invention. It is a flowchart which shows the procedure of another process of the navigation apparatus concerning the Example of this invention. It is explanatory drawing which shows a 1st display screen. It is explanatory drawing which shows a 2nd display screen. It is explanatory drawing which shows a 3rd display screen. It is explanatory drawing which shows a 4th display screen.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Navigation apparatus 101 Route search part 102 Guidance part 103 Traffic information acquisition part 104 Re-search part 105 Prohibition judgment part 106 Display control part 107 Display part 108 Movement judgment part 800,900,1000 Display screen

Claims (6)

A route search means for searching for a guide route of the moving body to the destination point;
Guidance means for performing route guidance by displaying information on the guidance route searched by the route search means on a display screen;
Traffic information acquisition means for acquiring road traffic information indicating road traffic status, including traffic prohibition information indicating a location where a traffic prohibition portion prohibits road traffic;
Determination means for determining whether or not the road traffic information acquired by the traffic information acquisition means includes a factor that requires the change of the guidance route;
If the determination means determines that a factor that requires the change of the guide route is included, a re-search means that causes the route search means to re-search for a new guide route different from the guide route;
When the determination unit determines that a factor that requires the change of the guide route is included, if the factor is the passage prohibition point on the guide route, the user is prompted to confirm the change to the new guide route. Information for prompting is displayed on the display screen, and information indicating that the user selects either the guide route or the new guide route when the factor is not the prohibited passage on the guide route is displayed on the display screen. Display control means to be displayed on,
A navigation device comprising: Movement determining means for determining whether the moving body is moving or stopped,
  The guidance means guides by voice only that the moving body is moving by the movement determination means, and guides the route guidance according to the new guidance route by the movement determination means. The navigation apparatus according to claim 1, wherein when it is determined that the moving body is stopped, guidance is provided by displaying on the display screen. 3. The guidance unit switches to guidance only by voice when the movement determination unit determines that the moving body is moving during display guidance on the display screen. The navigation device described. In a navigation method of a navigation device mounted on a moving body,
  A route search step for searching for a guidance route of the moving body to the destination point;
  A guidance step for performing route guidance by displaying information on the guidance route searched by the route search step on a display screen;
  A traffic information acquisition step for acquiring road traffic information indicating road traffic status, including traffic prohibition information indicating a location where a traffic prohibition portion prohibits road traffic;
  A determination step of determining whether or not the road traffic information acquired by the traffic information acquisition step includes a factor that requires the change of the guidance route;
  When the determination step determines that a factor that requires the change of the guide route is included, a re-search step for causing the route search step to re-search for a new guide route different from the guide route;
  If the determination step determines that a factor that requires a change in the guidance route is included, and if the factor is the prohibited passage location on the guidance route, the user is prompted to confirm the change to the new guidance route. Information for prompting is displayed on the display screen, and information indicating that the user selects either the guide route or the new guide route when the factor is not the prohibited passage on the guide route is displayed on the display screen. A display control process to be displayed on
  A navigation method characterized by comprising: A navigation program for causing a computer to execute the navigation method according to claim 4. A computer-readable recording medium on which the navigation program according to claim 5 is recorded.

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