JP4409968B2 - Route guidance method for navigation device and navigation device - Google Patents

Description

  The present invention relates to a navigation device, and more particularly to a technique for route guidance processing of an in-vehicle navigation device.

  Patent Document 1 describes a navigation device that periodically downloads traffic information from a traffic information distribution center during route guidance on a display, searches for a route using the downloaded traffic information, and continues route guidance on the searched route. Has been.

JP 2003-194561 A

  However, with the technique of Patent Document 1, a reroute search may be performed when there is no need for a reroute search. As a result, a new route different from the original route is searched for and displayed on the display, which may cause confusion for the user. For example, the original recommended route turns right at an intersection, but the newly searched route may turn left at the intersection. In such a case, if the user has already been prepared to make a right turn, the user cannot respond immediately even if the user is suddenly guided to make a left turn. In particular, when the lane is changed to the right lane, it is difficult to switch to turn left immediately before the intersection.

  In addition, it is easier for the user to travel when the route is guided to the destination by the route presented first. Therefore, it is not convenient for the user if a new route is displayed and guided by the route even though the vehicle has arrived near the destination.

  In addition, although the necessity for route search is low, downloading traffic information wastes communication fees and is not convenient.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to make a reroute search when there is no need for a reroute search without making a major design change to a conventional navigation device. It is an object of the present invention to provide a route guidance technique that can prevent and provide a user-friendly navigation device.

  In order to solve the above problems, the route guidance method of the navigation device of the present invention does not perform a reroute search even if the latest current traffic information is obtained when a reroute search is not necessary during the route guidance. Specifically, for example, it is configured as follows.

  The navigation device is determined to receive the traffic information in a reception determination step for determining whether or not to receive the traffic information from a traffic information distribution center that distributes current traffic information, and the reception determination step. A route search step for receiving the traffic information from the traffic information distribution center and searching for a route from the current position to the destination using the traffic information, and using the route searched in the route search step. The route guidance step for guiding the route is repeated. Then, the reception determination step does not determine that the traffic information should be received when a reroute search is not necessary.

  The navigation device may include a current position detection device. The reception determination step may not determine that the traffic information should be received when the current position is located in a predetermined traffic information reception unnecessary range.

  The reception determination step may not determine that the traffic information should be received during route guidance.

  The reception determination step may not determine that the traffic information should be received while the current position is located at a predetermined point where the route guidance is performed.

  The reception determination step may not determine that the traffic information should be received from the time when the mobile body on which the navigation device is mounted prepares for a right / left turn until the end of the right / left turn.

  In the route search step, the route search may not be performed during route guidance.

  Further, the step of receiving the traffic information does not receive the traffic information when the current position reaches within a predetermined traffic information reception unnecessary range, and the route guidance step includes a route with a predetermined current position. When reaching the guidance unnecessary range, the route guidance may not be performed. The traffic information unnecessary range and the route guidance unnecessary range can be set differently.

  ADVANTAGE OF THE INVENTION According to this invention, the technique which prevents a reroute search is made when the reroute search is unnecessary, using the existing technique.

  An embodiment of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic diagram of a navigation system to which an embodiment of the present invention is applied. As shown in the figure, the navigation system of this embodiment includes an in-vehicle navigation device 1000 mounted on a vehicle, and a traffic information distribution center 2000 connected via a radio base station 3000 and a network 4000.

  The traffic information distribution center 2000 manages the current traffic data 2100 in its database 2010 as shown in FIG. The current traffic data 2100 is managed for each mesh area (mesh ID) 2102 obtained by dividing the map into a plurality of maps. Current traffic data includes link travel time (or link travel speed) 2104 and link congestion degree 2105 determined from current (latest) traffic information for each link (link ID) 2103 constituting the road existing in the corresponding mesh area. Is included.

  FIG. 3 is a schematic configuration diagram of the in-vehicle navigation device 1000. As shown in the figure, the in-vehicle navigation device 1000 of this embodiment includes an arithmetic processing unit 1, a display 2, a map data storage device 3, a voice input / output device 4, an input device 5, and a wheel speed sensor 6. , A geomagnetic sensor 7, a gyro sensor 8, a GPS (Global Positioning System) receiving device 9, and a network connection device 10.

  The arithmetic processing unit 1 is a central unit that performs various processes. For example, the current location is detected based on information output from the various sensors 6 to 8 and the GPS receiver 9, and map data necessary for display is read from the map data storage device 3 based on the obtained current location information. Further, the read map data is developed in graphics, and a mark indicating the current location is superimposed on the map data and displayed on the display 2. Further, using the current traffic data received from the traffic information distribution center 2000 and the map data stored in the map data storage device 3, an optimal route (the starting point) connecting the destination instructed by the user and the current location (departure location) The recommended route is searched, and the user is guided using the voice input / output device 4 and the display 2.

  The display 2 is a unit that displays graphics information generated by the arithmetic processing unit 1, and is configured by a CRT, a liquid crystal display, or the like. The signal S1 between the arithmetic processing unit 1 and the display 2 is generally connected by an RGB signal or an NTSC (National Television System Committee) signal.

  The map data storage device 3 is composed of a storage medium such as a CD-ROM, DVD-ROM, HDD, or IC card. This storage medium stores map data.

  FIG. 4 is a diagram illustrating a configuration example of map data stored in the map data storage device 3. As shown in the figure, map data 310 is stored for each mesh region. The map data 310 includes a mesh area identification code (mesh ID) 311 and link data 312 of each link constituting a road included in the mesh area. The link data 312 includes a link identification code (link ID) 3121, coordinate information 3122 of two nodes (start node and end node) constituting the link, road type information 3123 including the link, and a link indicating the link length. Long information 3124, link travel time information 3125, link ID (connection link ID) 3126 of a link connected to each of the two nodes, and the like. Here, by distinguishing the start node and the end node for the two nodes constituting the link, the upward direction and the downward direction of the same road are managed as different links. The map data 310 also includes information (name, type, coordinate information, etc.) of map components other than roads included in the corresponding mesh area.

  Returning to FIG. 2, the description will be continued. The voice input / output device 4 converts the message to the user generated by the arithmetic processing unit 1 into a voice signal and outputs it, and recognizes the voice uttered by the user and transfers the content to the arithmetic processing unit 1.

  The input device 5 is a unit that receives instructions from the user, and includes a hardware switch such as a scroll key and a scale change key, a joystick, a touch panel pasted on a display, and the like.

  The sensors 6 to 8 and the GPS receiver 9 are used for detecting the current location (own vehicle position) by the vehicle-mounted navigation device. The wheel speed sensor 6 measures the distance from the product of the wheel circumference and the measured number of rotations of the wheel, and further measures the angle at which the moving body is bent from the difference in the number of rotations of the paired wheels. The geomagnetic sensor 7 detects the magnetic field held by the earth and detects the direction in which the moving body is facing. The gyro 8 is configured by an optical fiber gyro, a vibration gyro, or the like, and detects an angle at which the moving body rotates. The GPS receiver 9 receives a signal from a GPS satellite and measures the distance between the mobile body and the GPS satellite and the rate of change of the distance with respect to three or more satellites to thereby determine the current location, travel speed, and travel direction of the mobile body. Measure.

  The network connection device 10 controls a wireless communication device such as a mobile phone connected to the in-vehicle navigation device 1000, for example, and the traffic information distribution center 2000 via the wireless base station 3000 and a network such as a public network or the Internet. To access. Then, it communicates with the traffic information distribution center 2000.

  FIG. 5 is a diagram illustrating a hardware configuration example of the arithmetic processing unit 1.

As illustrated, the arithmetic processing unit 1 has a configuration in which devices are connected by a bus 32. The arithmetic processing unit 1 includes a CPU (Central Processing Unit) 21 that executes various processes such as numerical calculation and control of each device, and a RAM (Random) that stores map data and arithmetic data read from the map data storage device 3. (Access Memory) 22, ROM (Read Only Memory) 23 for storing programs and data, DMA (Direct Memory Access) 24 for transferring data between the memories and between the memory and each device, and graphics drawing A drawing controller 25 that executes and controls display, a video random access memory (VRAM) 26 that stores graphics image data, a color palette 27 that converts image data into RGB signals, and an A that converts analog signals into digital signals / D converter 28 and SCI (Serial Commu) that converts serial signals into parallel signals synchronized with the bus nication interface) 29, a PIO (Parallel Input / Output) 30 for placing parallel signals on the bus in synchronization with the bus, and a counter 31 for integrating the pulse signal.

  FIG. 6 is a diagram illustrating a functional configuration of the arithmetic processing unit 1.

  As shown in the figure, the calculation processing unit 1 includes a user operation analysis unit 41, a route search unit 42, a route data storage unit 43, a route guidance unit 44, a map display processing unit 45, and a current position calculation unit 46. A map match processing unit 47, a data reading unit 48, a trajectory storage unit 49, a menu display processing unit 50, a graphics processing unit 51, and a network communication unit 55.

  The current position calculation unit 46 uses distance data and angle data obtained as a result of integrating the distance pulse data S5 measured by the wheel speed sensor 6 and the angular acceleration data S7 measured by the gyro 8, respectively. The current position (X ′, Y ′), which is the position after the vehicle travels, is periodically calculated from the initial position (X, Y) and is output to the map match processing unit 47. . Here, in order to make the relationship between the rotation angle of the host vehicle and the traveling direction coincide, reference is made to the direction data S6 obtained from the geomagnetic sensor 7 and the angle data obtained by integrating the angular acceleration data S7 obtained from the gyro 8. Estimate the absolute direction of the direction in which the vehicle is traveling. In addition, since the error accumulates when the data of the wheel speed sensor 6 and the data of the gyro 8 are respectively integrated, the error accumulated based on the position data S8 obtained from the GPS receiver 9 in a certain time period is calculated. Processing for canceling is performed, and information on the current location is output to the map match processing unit 47.

  The map match processing unit 47 compares the map data around the current location read by the data reading unit 48 with the travel locus stored in the locus storage unit 49 described later, and the road (link) having the highest shape correlation. In addition, a map matching process is performed in which the current location periodically output from the current position calculation unit 46 is matched. Since the current position information obtained by the current position calculation unit 46 includes a sensor error, map matching processing is performed for the purpose of further improving the position accuracy. As a result, the current location often coincides with the traveling road.

  The trajectory storage unit 49 stores information on the current location on which the map match processing has been performed by the map match processing unit 47 as trajectory data every time the vehicle travels a predetermined distance. The trajectory data is used to draw a trajectory mark on the road on the map corresponding to the road that has been traveled so far.

  The user operation analysis unit 41 receives a request from the user input to the input device 5, analyzes the request content, and controls each unit of the arithmetic processing unit 1 so that processing corresponding to the request content is executed. To do. For example, when the user requests a search for a recommended route, the map display unit 45 is requested to display a map on the display 2 in order to set a destination, and further, from the current location (departure location) to the destination. Requests the route search unit 42 to calculate a route.

  The route search unit 42 uses a Dijkstra method or the like to search for a route that minimizes the cost of a route connecting between two designated points (current location, destination). The recommended route obtained as a result is stored in the route data storage unit 43. In the present embodiment, when the current travel data received from the traffic information distribution center 2000 includes the link travel time according to the search condition specified by the operator, the route search unit 42 converts the travel time to the link cost. If not included, the route search is performed using the link travel time 3125 or the link length 3124 in the link data 312 as the link cost.

  The route guidance unit 44 performs route guidance using the route stored in the route data storage unit 43. For example, the route information and the current location information output from the map match processing unit 47 are compared, and the voice input / output device 4 is used to determine whether the vehicle should go straight before passing an intersection or the like. Tell the user.

  The data reading unit 48 reads, from the map data storage device 3, map data in an area that is required to be displayed on the display 2 or an area that is required for route search (an area that includes a departure place and a destination). Works to prepare.

  The map display processing unit 45 receives the map data in the area where display on the display 2 is requested from the map data storage device 3, and the graphic processing unit 51 uses the designated scale and drawing method for roads and other maps. A map drawing command is generated so as to draw a mark such as a component, a current location, a destination, and an arrow for a guide route.

  Upon receiving a command output from the user operation analysis unit 41, the menu display processing unit 50 generates a menu drawing command so that the graphic processing unit 51 draws various types of menus and graphs.

  The graphics processing unit 51 receives commands generated by the map display processing unit 45 and the menu display processing unit 50 and develops image data to be displayed on the display 2 on the VRAM 26.

  The network communication unit 55 requests the traffic information distribution center 2000 via the transmission radio base station 3000 to download the latest current traffic data regarding the link in the mesh area between the current location and the destination. The current traffic data sent from the traffic information distribution center 2000 in response to the request is received and transmitted to the route search unit 42.

  The in-vehicle navigation device 1000 configured as described above performs a route search between a departure point and a destination in response to a user instruction, displays a route guidance screen on the display 2, and uses the searched route. Route guidance. Then, periodically (for example, every 10 minutes, every 30 minutes, etc.), the latest current traffic data is received from the traffic information distribution center 2000, a reroute search is performed using the received current traffic data, and the searched route Continue route guidance using. However, the in-vehicle navigation device 1000 of this embodiment does not simply download the current traffic data from the traffic information distribution center 2000, but does not download it in a predetermined case. For example, download is not performed when the route is specifically guided such as “Please turn left” or when the route arrives near the destination. By doing so, a route different from the original route is searched by the re-route search, and the user's confusion caused by being guided by the route can be avoided.

  [Description of Operation] Next, the operation of the vehicle-mounted navigation device 1000 will be described. FIG. 7 is a flowchart showing an outline of the operation of the in-vehicle navigation device 1000 of the present embodiment.

  This flow starts when the user operation analysis unit 41 receives a route guidance request from the user via the voice input / output device 4 or the input device 5.

  Note that the route search unit 42 performs a recommended route search process before route guidance. Specifically, the route search unit 42 uses a Dijkstra method or the like to search for a route that minimizes the cost of a route connecting two designated points (current location, destination). In the present embodiment, the route search unit 42 uses the travel time as the link cost for the link given the link travel time by the current traffic data received from the traffic information distribution center 2000. On the other hand, the link travel time 3125 or the link length 3124 in the link data 312 is used as the link cost for the link for which the travel time is not given.

  In the route guidance process, first, the route guidance unit 44 displays a route on the display 2 (S100). Specifically, the route guidance unit 44 extracts map data around the current position from the map data storage device 3, and displays the screen of the display 2 via the map display processing unit 45, the menu display processing unit 50, and the graphic processing unit 51. To display a map around the current position. Further, the recommended route stored in the route data storage unit 43 is displayed on the map.

  FIG. 8 shows an example of a display screen on the display 2. As shown in the figure, on the screen 800, a car mark 920 indicating the current position and a recommended route 930 are displayed on a map 910 around the current location.

  Next, the route guidance unit 44 determines whether or not the vehicle has arrived in the guidance unnecessary area from the current position information (S102). The guidance unnecessary area is determined in advance by the route guidance unit 44 so as to be within a predetermined distance range (eg, within 50 m) from the destination. If the route has arrived in the guidance unnecessary area, the route guiding unit 44 returns to S100 and continues the processing. That is, the route guiding unit 44 merely displays the route on the display 2. In response to a user request, the route guidance unit 44 ends the route guidance process.

  On the other hand, when it has not arrived at the guidance unnecessary area (No in S102), the route guidance unit 44 determines whether it has arrived at the guidance point (S104). The guidance point refers to a point or area where specific guidance is performed. For example, in the present embodiment, a message such as “Turn left at the next intersection” or “Turn right after 500 m. Change lane to the right lane” or the like is displayed or voiced before the intersection. A guidance point is a point or area where a route is specifically guided by outputting such a message. The guidance point is determined in advance according to the guidance content. For example, in the case of a right / left turn, it is set at a predetermined distance before the right / left turn point (for example, 200 m before), and when turning a large intersection right / left, it is more advanced than when turning a small intersection right / left. Guidance points are defined so that messages are output.

  When the current position has reached the guidance point (Yes in S104), the route guidance unit 44 performs specific route guidance processing as described above. For example, as illustrated in FIG. 9, the route guiding unit 44 displays a message 710 such as “Please turn left at an intersection 200 m ahead” on the display 2 via the menu display processing unit 50.

  On the other hand, when the current position is not a guidance point (No in S104), the route guidance unit 44 proceeds to the next processing S108 and continues the processing without performing a specific route guidance.

  Next, the route guidance unit 44 determines whether or not the vehicle has arrived in the traffic information download unnecessary area (S108).

  By the way, when receiving the current traffic data downloaded from the traffic information distribution center 2000, the in-vehicle navigation 1000 of the present embodiment searches for a route using the received current traffic data, and continues to guide the route along the searched route. However, when arriving near the destination, there are many cases where there is almost no change from the previous route even if traffic information is newly obtained and the route is searched again. Conversely, if there is a change and a new route is displayed immediately before the destination, the user will be confused. Therefore, in this embodiment, a download unnecessary area is provided in advance, and when entering this area, the current traffic data is not downloaded.

  If the current position is in the download unnecessary area (Yes in S108), it is determined whether a message notifying the user that the download is not performed has already been displayed (S110). When the message is already displayed (Yes in S110), the route guiding unit 44 returns to S100 and continues the process.

  On the other hand, when the message has not been displayed yet (No in S110), the route search unit 44, as shown in FIG. "Do not download traffic information," or the like, a message notifying that the traffic information is not downloaded is displayed. Then, the route search unit 44 returns to S100 and continues processing. The message may be output as voice via the voice input / output device 4.

  On the other hand, when it has not arrived at the download unnecessary area (No in S108), the route search unit 44 determines whether or not a predetermined time (for example, 30 minutes has elapsed since the last download) (S114). The time is set to a time at which the traffic information is expected to change due to a change in traffic conditions, and the predetermined time may be adjustable according to the user's preference.

  If the predetermined time has not elapsed (No in S114), the route search unit 44 returns to S110 and continues the process.

  On the other hand, when the predetermined time has elapsed (Yes in S114), the route search unit 44 determines whether the vehicle is passing the guidance point or is performing a specific guidance (S116). . For example, as shown in FIG. 9, when a message for prompting a right or left turn is displayed, it is determined that a specific route guidance is being performed. When the vehicle is turning right or left according to the route guidance, or when the vehicle is changing lanes and preparing for a right or left turn, the route guidance unit 44 determines that the vehicle is passing the guidance point. In addition, when the vehicle is moving in an area where it is difficult to change the route until the vehicle completes traveling in a certain area such as driving on a ramp on an expressway, it may be determined that the vehicle is passing the guidance point. Good.

  If the current position is a guidance point or a specific guidance is being performed (Yes in S116), the route guidance unit 44 returns to S100 and continues the process.

  On the other hand, when the current position is not the guidance point (No in S116), the route guidance unit 44 requests the traffic information distribution center 2000 to download the current traffic data and receives the current traffic data sent (S118). Specifically, upon receiving an instruction from the route search unit 44, the network communication unit 55 requests the traffic information wiring center 2000 to download the current traffic data, receives the current traffic data downloaded in response to the request, The received current traffic data is transmitted to the route search unit 42.

When the latest current traffic data is received from the traffic information distribution center 2000, the route search unit 42 searches the route from the current position to the destination using the received current traffic data, and the searched route is a route data storage unit. 43 (S120)
Next, the route guiding unit 44 compares the recommended route that has been used for route guidance so far with the newly searched route, and determines whether or not there has been a change (S122). When there is a change (Yes in S122), the route guiding unit 44 displays a message 715 indicating that the route has been changed on the display 2 via the menu display processing unit 50 as shown in FIG. 10 (S124). ). In FIG. 10, the route 932 before the change and the currently adopted recommended route 930 are displayed together for comparison.

  On the other hand, when the route has not been changed (No in S122), the route guiding unit 44 returns to S100 and continues the processing.

  As described above, when the vehicle approaches the destination, the route guidance unit 44 does not perform a specific route guidance (Yes in S102). When the user receives a route guidance end request, the route guidance is terminated.

  According to the above flow, since the re-route search is not performed when approaching the destination, confusion of the user due to a sudden change of route near the destination can be avoided.

  Further, when the vehicle arrives near the destination, the current traffic data is not newly downloaded, so the route is not suddenly changed near the destination.

  In addition, it is possible to provide a specific timing for stopping the route guidance and a timing for stopping the download of the current traffic data.

  In addition, the current traffic data is not downloaded while a specific route guidance is being performed at the guidance point, so that confusion of the user due to a sudden change of the guidance route at the guidance point can be avoided.

  The embodiment to which the present invention is applied has been described above.

  In addition, this invention is not limited to said embodiment, A various deformation | transformation is possible within the range of the summary.

  For example, the order of the steps in FIG. 7 may be changed.

  Specifically, as shown in FIG. 12, the order of step S116 and step S118 may be reversed.

  In the flowchart shown in FIG. 13, after determining whether a predetermined time has elapsed since the last download in S114, the route guiding unit 44 downloads the current traffic data when the predetermined time has elapsed (Yes in S114). (S118b). Thereafter, it is determined whether or not the current position is at the guidance point (S116b). If the current position is at the guidance point, the process returns to S100 and the processing is continued without performing a reroute search. On the other hand, when it is not at the guidance point (No in S116b), the route guidance unit 44 performs a reroute search. In this way, it is possible to determine whether or not a reroute search should be performed after downloading and receiving current traffic data. If a reroute search should not be performed, the reroute search can be prevented.

  In addition, although the example which applied this invention to the vehicle-mounted navigation apparatus was demonstrated, this invention is applicable also to navigation apparatuses other than vehicle-mounted.

FIG. 1 is a schematic configuration diagram of a navigation system to which an embodiment of the present invention is applied. FIG. 2 is a diagram showing a configuration example of current traffic data stored in the database of the traffic information distribution center. FIG. 3 is a schematic configuration diagram of the in-vehicle navigation device 1000. FIG. 4 is a diagram illustrating a configuration example of map data stored in the map data storage device 3. FIG. 5 is a diagram illustrating a hardware configuration of the arithmetic processing unit 1. FIG. 6 is a diagram illustrating a functional configuration of the arithmetic processing unit 1. FIG. 7 is a flowchart showing an outline of the operation of the in-vehicle navigation device 1000. FIG. 8 is a diagram illustrating an example of a display screen during route guidance. FIG. 9 is a diagram illustrating an example of a display screen during route guidance (specific route guidance). FIG. 10 is a diagram illustrating an example of a display screen during route guidance (recommended route change). FIG. 11 is a diagram illustrating an example of the display screen during route guidance (near the destination). FIG. 12 is a flowchart showing another processing example of the in-vehicle navigation device of the present embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Arithmetic processing part, 2 ... Display, 3 ... Map data storage device, 4 ... Voice input / output device, 5 ... Input device, 6 ... Wheel speed sensor, 7 ... Geomagnetic sensor, 8 ... Gyro, 9 ... GPS receiver, DESCRIPTION OF SYMBOLS 10 ... Network connection apparatus, 11 ... In-vehicle LAN apparatus, 12 ... FM multiplex broadcast receiving apparatus, 13 ... Beacon receiving apparatus, 21 ... CPU, 22 ... RAM, 23 ... ROM, 24 ... DMA, 25 ... Drawing controller, 26 ... VRAM 27 ... Color palette, 28 ... A / D converter, 29 ... SCI, 30 ... PIO, 31 ... Counter, 41 ... User operation analysis unit, 42 ... Route search unit, 43 ... Route data storage unit, 44 ... Route guidance , 45 ... Map display processing unit, 46 ... Current position calculation unit, 47 ... Map match processing unit, 48 ... Data reading unit, 49 ... Trajectory storage unit, 50 ... Menu display processing unit, 51 ... Graphics processing unit, 55 ... Network communication unit

Claims (13)

A navigation device route guidance method including a current position detection device,
The navigation device
A receiving step for receiving the traffic information from a traffic information distribution center for distributing current traffic information;
When the traffic information is received by the receiving step, using the traffic information, a route search step for searching a route from the current position to the destination;
And repeatedly performing a route guidance step for guiding a route using the route searched in the route search step,
The route guidance method for a navigation device, wherein the reception step suspends reception of the traffic information when the current position is located in a predetermined traffic information reception unnecessary range. A navigation device route guidance method according to claim 1 ,
The route guidance method for a navigation device, wherein the traffic information reception unnecessary range is set within a predetermined distance from a destination. A route guidance method for a navigation device according to claim 1 or 2,
The navigation device further includes:
A route guidance method for a navigation device, characterized in that when reception of the traffic information is interrupted, a step of outputting information to that effect is performed. A navigation device route guidance method including a current position detection device,
The navigation device
A receiving step for receiving the traffic information from a traffic information distribution center for distributing current traffic information;
When the traffic information is received by the receiving step, using the traffic information, a route search step for searching a route from the current position to the destination;
And repeatedly performing a route guidance step for guiding a route using the route searched in the route search step,
The route determination method for a navigation device, wherein the reception determination step suspends reception of the traffic information during route guidance. A navigation device route guidance method including a current position detection device,
The navigation device
A receiving step for receiving the traffic information from a traffic information distribution center for distributing current traffic information;
When the traffic information is received by the receiving step, using the traffic information, a route search step for searching a route from the current position to the destination;
And repeatedly performing a route guidance step for guiding a route using the route searched in the route search step,
The route determination method for a navigation device, wherein the reception determination step suspends reception of the traffic information while the current position is located at a predetermined point where the route guidance is performed. A navigation device route guidance method including a current position detection device,
The navigation device
A receiving step for receiving the traffic information from a traffic information distribution center for distributing current traffic information;
When the traffic information is received by the receiving step, using the traffic information, a route search step for searching a route from the current position to the destination;
And repeatedly performing a route guidance step for guiding a route using the route searched in the route search step,
In the reception determination step, the route guidance of the navigation device is characterized in that the reception of the traffic information is interrupted from the time when the mobile body on which the navigation device is mounted prepares for a right / left turn to the end of the right / left turn. Method. A navigation device route guidance method including a current position detection device,
The navigation device
A traffic information receiving step for receiving the traffic information from a traffic information distribution center for distributing current traffic information;
If the traffic information is received in the traffic information receiving step, using the traffic information, a route search step for searching for a route from the current position to the destination;
Performing a route guidance step for guiding the route using the route searched in the route search step,
In the traffic information receiving step, when the current position reaches a predetermined traffic information reception unnecessary range, the reception of the traffic information is interrupted,
The route guidance step interrupts the route guidance when the current position reaches within a predetermined route guidance unnecessary range,
The route guidance method for a navigation device, wherein the traffic information unnecessary range and the route guidance unnecessary range are set differently. It is the route guidance method of the navigation device according to any one of claims 1 to 7 ,
The navigation device further includes:
A route guidance method for a navigation device, comprising: a step of outputting information notifying when a route newly searched in the route search step is different from a route previously searched for, . A navigation device comprising a current position detection device,
Receiving means for receiving the traffic information from a traffic information distribution center for distributing current traffic information;
When the traffic information is received by the receiving means, using the traffic information, a route search means for searching for a route from a current position to a destination;
Route guidance means for guiding the route using the route searched by the route search means,
The navigation device according to claim 1, wherein the receiving means interrupts reception of the traffic information when the current position is located in a predetermined traffic information reception unnecessary range. A navigation device comprising a current position detection device,
Receiving means for receiving the traffic information from a traffic information distribution center for distributing current traffic information;
When the traffic information is received by the receiving means, using the traffic information, a route search means for searching for a route from a current position to a destination;
Route guidance means for guiding the route using the route searched by the route search means,
The navigation apparatus characterized in that the reception determination means interrupts reception of the traffic information during route guidance. A navigation device comprising a current position detection device,
Receiving means for receiving the traffic information from a traffic information distribution center for distributing current traffic information;
When the traffic information is received by the receiving means, using the traffic information, a route search means for searching for a route from a current position to a destination;
Route guidance means for guiding the route using the route searched by the route search means,
The navigation apparatus characterized in that the reception determination means interrupts reception of the traffic information while the current position is located at a predetermined point where the route guidance is performed. A navigation device comprising a current position detection device,
Receiving means for receiving the traffic information from a traffic information distribution center for distributing current traffic information;
When the traffic information is received by the receiving means, using the traffic information, a route search means for searching for a route from a current position to a destination;
Route guidance means for guiding the route using the route searched by the route search means,
The navigation apparatus according to claim 1, wherein the reception determination unit interrupts reception of the traffic information from a time when the mobile body on which the navigation device is mounted prepares for a right / left turn until a right / left turn is completed. A navigation device comprising a current position detection device,
A traffic information receiving means for receiving the traffic information from a traffic information distribution center for distributing current traffic information;
When the traffic information is received by the traffic information receiving means, using the traffic information, a route search means for searching for a route from the current position to the destination;
Route guidance means for guiding the route using the route searched by the route search means,
The traffic information receiving means interrupts the reception of the traffic information when the current position reaches within a predetermined traffic information reception unnecessary range,
The route guidance means interrupts route guidance when the current position reaches a predetermined route guidance unnecessary range,
The navigation apparatus characterized in that the traffic information unnecessary range and the route guidance unnecessary range are set differently.

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