JP2009186182A - Navigation system and program for same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily enable the meeting between a carrier of a portable apparatus and a vehicle's driver even in the case that a current position of the portable apparatus is at a location inconvenient for route guidance in a technology of a navigation system for meeting a carrier of a potable apparatus through the use of current position information of the portable apparatus. <P>SOLUTION: The portable apparatus specifies a current position 20 of the self-apparatus and transmits it to a navigation system for vehicles. The navigation system for vehicles extracts a plurality of points 34-36 suitable for a meeting as meeting points from roads in the vicinity of the received current position 20 and transmits information on extracted meeting points to the portable apparatus. The portable apparatus selects one meeting point from among the meeting points 34-36 according to the operation of the carrier of the portable apparatus and informs the navigation system for vehicles of the selected meeting point. The navigation system for vehicles computes routes and performs guidance to the informed meeting point. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a navigation device and a program for the navigation device.

In Patent Document 1, in a navigation device for a vehicle, the GPS function of a portable wireless communication terminal (hereinafter simply referred to as a portable device) is used to receive the current position of the portable device, and the received current position is determined as the destination. And a technology for guiding a route to a destination is disclosed. With such a technology, the owner of the portable device and the driver of the vehicle can easily meet each other.
JP 2006-184083 A

  However, with such a technique, when the current position of the portable device is on a road where route guidance is not possible or on a road that is not on the map data, the route to the portable device cannot be calculated. Moreover, even if the route to the portable device can be calculated, there is a possibility that a point on a narrow road where it is difficult for the vehicle to enter is set as the destination.

  In view of the above points, the present invention provides a navigation apparatus technology for meeting with the owner of a portable device using the current position information of the portable device, and the current position of the portable device may be an inconvenient point for route guidance. An object of the present invention is to make it easy for the owner of the portable device and the driver of the vehicle to meet each other.

  In order to achieve the above object, the navigation device for guiding the route to the set destination receives information on the current position of the portable device (7) from the portable device (7). , A plurality of waiting points far from the current position of the portable device (7) are extracted, information on the extracted waiting points is notified to the portable device (7), and after the notification of the plurality of waiting points, the portable device (7) Based on the fact that a designation for selecting one of a plurality of waiting points has been received, the waiting point according to the designation is set as the destination.

  In this way, by selecting one of a plurality of waiting points extracted from the periphery of the portable device (7) on the portable device (7) side, options for the waiting point are increased and the portable device is used for setting the destination. (7) Since the judgment on the side is reflected, even if the current position of the portable device (7) is an inconvenient point for route guidance, the owner of the portable device (7) and the driver of the vehicle easily fall. The possibility of matching increases.

  In addition, as described in claim 2, the navigation device acquires information on the ease of travel of a plurality of roads around the current position of the portable device (7), and the ease of travel among the plurality of roads. A plurality of the above-mentioned waiting points may be extracted from a road where is equal to or greater than a reference value.

  In this way, the navigation device side can also extract a waiting point in consideration of the evaluation of easiness of driving on the road, so that the owner of the portable device (7) and the driver of the vehicle are easy. The possibility of meeting with the person is further increased.

  Further, as described in claim 3, the navigation device uses the inside of a circle centered on the current position of the portable device (7) as a search range (of a preparation point) and sequentially increases the diameter of the circle. The search range is expanded, and in the course of the expansion of the search range, for each of a plurality of roads around the current position of the portable device (7), the point that first entered the search range is determined as a preparation point. May be.

  In this case, the navigation device calculates a route from the current position of the portable device (7) to the preparation point, and extracts a point that first reaches the road with the preparation point in the calculated route as a meeting point. It may be like this. In this way, the distance that the holder of the portable device (7) moves to the meeting point is shortened, so that the convenience of meeting increases.

  Further, as described in claim 4, the features of the present invention can also be understood as a program.

  In addition, the code | symbol in the bracket | parenthesis in the said and the claim shows the correspondence of the term described in the claim, and the concrete thing etc. which illustrate the said term described in embodiment mentioned later. .

  Hereinafter, an embodiment of the present invention will be described. FIG. 1 schematically shows a configuration of a communication system according to the present embodiment. In the present embodiment, the vehicle navigation device 1 is mounted on the vehicle 2, and is carried by the portable device holder 6 from the vehicle navigation device 1 via the base station 3, the communication network 4, and the base station 5 for wireless communication. Wireless communication is performed with a portable wireless communication terminal (hereinafter simply referred to as a portable device) 7.

  Specifically, the portable device 7 identifies the current position of the own device using a GPS (Global Positioning System) function, and transmits the identified current position to the vehicle navigation apparatus 1. Then, the vehicle navigation device 1 extracts one or a plurality of points suitable for waiting as waiting points from the road around the received current position, and transmits information on the extracted waiting points to the portable device 7. The portable device 7 selects one of the meeting points based on the selection operation of the portable device holder 6 and notifies the vehicle navigation apparatus 1 of the selected meeting point. Then, the vehicle navigation device 1 calculates and guides the route to the meeting point that has received the notification.

  Hereinafter, the configuration and operation of such a communication system will be described in detail. The portable device 7 is a well-known wireless communication device that can specify the current position using a technology such as GPS. Examples of the portable device 7 include a mobile phone and a PDA capable of wireless communication. The operation of the portable device 7 will be described later.

  Next, the vehicle navigation apparatus 1 will be described. FIG. 2 shows a hardware configuration of the vehicle navigation apparatus 1. The vehicle navigation device 1 includes a position detector 11, an image display device 12, an operation unit 13, a speaker 14, a wireless interface 15, a map data acquisition unit 16, and a control circuit 17.

  The position detector 11 includes a well-known sensor (not shown) such as a geomagnetic sensor, a gyroscope, a vehicle speed sensor, and a GPS receiver. The current position and direction of the vehicle based on the characteristics of each of these sensors. , And information for specifying the speed is output to the control circuit 17.

  The image display device 12 displays a video based on the video signal output from the control circuit 17 to the user. Examples of the display image include a map centering on the current location.

  The operation unit 13 includes a plurality of mechanical switches provided in the vehicle navigation device 1 and an input device such as a touch panel provided so as to overlap the display surface of the image display device 12, and controls a signal according to a user operation. 17 to output.

  The wireless interface 15 is a device having a known wireless function (for example, amplification, frequency conversion, modulation, demodulation) for wireless connection with the base station 3. The control circuit 17 can communicate with the portable device 7 via the wireless interface 15.

  The map data acquisition unit 16 includes a nonvolatile storage medium such as an HDD and a device that reads and writes data from and to the storage medium. The storage medium stores a program executed by the control circuit 17, map data for route guidance, vehicle width data, registered portable device data, and the like.

  The map data has road data and facility data. The facility data includes data indicating name information, location information, facility type information, etc. for each facility. Road data includes link position, link type, link width, road name to which the link belongs (for example, national highway 155, prefectural road 47), link ease of travel, node position, node type, and , Information on the connection relationship between the node and the link is included.

  The link ease of running is an index whose value is larger as the link is easier to run. The ease of running is determined in advance based on the link width, average traffic volume, road surface maintenance condition, curve condition, and the like, which are measured in advance. As an example of the link ease of running information, for example, there is a “running ease map” of the Geographical Survey Institute.

  The vehicle width data is information on the width of the vehicle 2. This information may be registered by the control circuit 17 in accordance with the registration operation of the operation unit 13 by the user or the mounting worker when the vehicle navigation device 1 is mounted on the vehicle 2.

  The registered portable device data includes identification information of the portable device permitted to exchange the current position information with the vehicle navigation device 1. The registered portable device data may be registered by the control circuit 17 in accordance with a registration operation of the operation unit 13 by the user.

  A control circuit (corresponding to a computer) 17 is a microcomputer having a CPU, RAM, ROM, I / O and the like. The CPU executes a program for the operation of the vehicle navigation device 1 read from the ROM or the map data acquisition unit 16, reads information from the RAM, the ROM, and the map data acquisition unit 16 when executing the program. And, if possible, writes information to the storage medium of the map data acquisition unit 16, exchanges signals with the position detector 11, the image display device 12, the operation unit 13, and the speaker 14, and wireless interface 15 is used to communicate with the portable device 7.

  Specific processing performed by the control circuit 17 executing the program includes current position specifying processing, destination setting processing, guidance route calculation processing, route guidance processing, and the like.

  The current position specifying process is a process for specifying the current position and direction of the vehicle based on a signal from the position detector 11 using a known technique such as map matching.

  The destination setting process is a process of setting a destination for route guidance in accordance with a user operation on the operation unit 13 or the like.

  The guidance route calculation process is a process for calculating an optimum guidance route from the current position of the vehicle 2 to the destination set by the destination setting process.

  In the route guidance process, map data is read from the map data acquisition unit 16 and an image in which the calculated guidance route, destination, waypoint, current position, etc. are overlaid on the map indicated by the map data is displayed on the image display device 12. This is a process for outputting the guidance voice for instructing the right turn, the left turn, etc. to the speaker 14 when necessary, such as when the host vehicle arrives before the guidance intersection.

  As a part of the destination setting process, the control circuit 17 meets the portable device holder 6 based on the information on the current position of the portable device 7 (hereinafter referred to as the portable device position) received from the portable device 7. The waiting destination setting process for determining one of the waiting points as a destination is executed.

  FIG. 3 shows a flowchart of the program 100 for this meeting destination setting process. The control circuit 17 is configured to execute the program 100 while the ACC of the vehicle 2 is on.

  The portable device 7 specifies the current position of the portable device 7 based on a predetermined transmission operation of the portable device holder 6 with respect to the portable device 7 or automatically regardless of the operation of the portable device holder 6. The identified current position and identification information of the portable device 7 are transmitted to the vehicle navigation device 1. The transmission form may be an e-mail transmission form or a data transmission form according to a protocol other than a telephone call.

  In the execution of the program 100, the control circuit 17 first determines in step 105 whether or not there is an access from the portable device (that is, a connection request for information transmission) based on a signal from the wireless interface 15. If there is access, then step 110 is executed. If there is no access, step 105 is executed again.

  In step 110, it is determined whether the portable device that has been accessed is the registered portable device 7 or not. This determination is made based on whether or not the identification information in the data transmitted by the accessed portable device is received and whether the identification information is registered in the registered portable device data. If it is registered, step 115 is executed, and if not registered, step 105 is executed again.

  Step 115 and subsequent steps are processing in the waiting point setting mode. In step 115, the control circuit 17 acquires information on the current position of the portable device 7 (that is, the portable device position) based on the signal from the accessed portable device 7.

  Subsequently, in step 120, it is determined whether or not the position of the portable device is located on a road where route guidance is possible. When the route is not located on a road where the route can be guided, if there is no route from the current position of the vehicle 2 to the portable device position for reasons such as road configuration or traffic restrictions, There is a case where there is no road map data or there is no road map data of the position of the portable device.

  This determination processing may be realized by actually executing the guidance route calculation processing using the current position of the vehicle 2 as the start point and the portable device position as the destination, and determining whether or not the route is found. If the position of the portable device is located on a road where route guidance is possible, step 125 is executed. If not, step 150 is executed.

  In step 125, it is determined based on the map data whether the portable device position is located on a high priority road. A high-priority road means a road whose degree of easiness to travel is equal to or higher than a reference value. The reference value may be a constant value stored in advance, a value that varies based on various conditions, or a value that is randomly determined within a certain range. For example, the reference value may increase as the lateral width recorded in the vehicle width data of the vehicle 2 increases.

  FIG. 4 illustrates the portable device position 20 and the surrounding roads 21 to 25. In this example, the A line 21 and the B line 22 have the highest runnability of 3, the C line 23 has the runnability of 2, and the narrow streets 24 and 25 are easy to run. The lowest degree is 1. For example, if the above-described reference value is 2, the determination result of step 120 is negative in the example of FIG. If the determination result of step 125 is affirmative, step 130 is executed subsequently, and if negative, step 150 is executed subsequently.

  In step 130, a guidance route calculation process is executed using the portable device position as a temporary destination, thereby calculating a guidance route from the current position of the vehicle 2 to the temporary destination.

  Subsequently, in step 135, information based on the calculated guidance route, such as an estimated arrival time to the destination, is calculated, and the calculated information is stored in the portable device 7 together with the route information of the guidance route calculated in step 130. Send.

  In the portable device 7 that has received such information, the received information is displayed on the portable device holder 6 on the display, and an inquiry is made as to whether or not to accept the information. When the portable device holder 6 performs an operation of consent or non-approval in response to this inquiry, the portable device 7 uses the navigation information for the vehicle according to the information of consent or non-approval according to the operation. Transmit to device 1.

  The control circuit 17 of the vehicle navigation apparatus 1 waits until the acceptance or non-acceptance data is received from the portable device 7 in step 140 following step 135. When the acceptance data is received, the control circuit 17 executes step 145. When the acceptance data is received, the execution of the program 100 is terminated.

  In step 145, the temporary destination is determined as the official destination, the execution of the program 100 is terminated, and then the guidance route calculation process and the subsequent route guidance process are executed.

  Step 150 and subsequent steps are processing in the peripheral point search mode. First, in step 150, the control circuit 17 searches for a route guidance possible point (corresponding to an example of a preparation point) only from the high priority roads 21 to 23 around the portable device position 20. Here, the route guidance possible point refers to a point at which a guidance route can be calculated from the current position of the vehicle 2 to that position.

  A specific method for searching for route guidance points is as follows. The control circuit 17 expands the search range by sequentially enlarging the circle within the circle centered on the portable device position 20 as the search range. Then, in the process of expanding the search range, when a point where the route guidance on the high priority roads 21 to 23 is newly entered into the search range, the point is extracted as a route guidance possible point.

  However, even if a route guidance point on the high priority roads 21 to 23 is already extracted on the same road, the point is not extracted as a route guidance point. Whether the roads are the same is determined based on the information of “the road name to which the link belongs” in the road data.

  The process of expanding the search range is continued until the radius of the circle reaches the maximum radius. Accordingly, there may be a case where a plurality of route guidance possible points can be extracted, a case where only one route can be extracted, or a case where none can be extracted.

  In the example of FIG. 4, when the search range has expanded to within the circle 26, the point 40 enters the search range as a route guideable point, but the narrow street 24 to which the point 40 belongs is a low priority road, The point 40 is not extracted as a route guideable point.

  Further, when the search range is expanded to the inside of the circle 27, the points 30 and 32 enter the search range as route guideable points. Since these points 30 and 32 are on the high-priority roads 21 and 23, the points 30 and 32 are extracted as route guidance possible points.

  Further, when the search range is expanded to within the circle 28, the point 31 enters the search range as a route guidance possible point. Since this point 31 is on the high priority road 22, it is additionally extracted as a point 31 route guidance possible point.

  The maximum radius of the circle in the search range is a distance that a person can walk from the portable device position 20, and may be a fixed value (for example, 1 km), It may be changed in accordance with a setting operation using the operation unit 13 by a driver. Alternatively, the maximum radius may be increased as the mobile device position 20 and the current position of the vehicle 2 are farther away (that is, the possibility that the meeting time is delayed is higher).

  Subsequently, in step 155, it is determined whether or not one or more route guideable points are found. If one or more points are found, step 160 is executed. If no point is found, step 158 is executed.

  In step 158, the route guidance possible point is extracted by the same method as in step 150. However, the roads to be extracted are limited to low priority roads (that is, roads whose driving safety is less than the reference value). Following step 158, step 160 is executed.

  In step 160, a meeting point is determined for each of the extracted one or more route guideable points. The method for determining the meeting point for each route guidance possible point is as follows.

  As shown in FIG. 5, the control circuit 17 calculates a walking route 33 from the portable device position 20 to the route guidance possible point 31. The calculation of the walking route 33 may be realized by a guidance route calculation process, or when the guidance route calculation process excludes a narrow road from the guidance route, a process for incorporating such a narrow road into the guidance route. It may be realized by.

  Subsequently, the control circuit 17 specifies a point 34 that reaches the road to which the route guideable point belongs for the first time in the walking route 33, and determines the point as a meeting point corresponding to the route guideable point.

  With the above method, as illustrated in FIG. 6, meeting points 34 to 36 corresponding to all the extracted route guidance possible points 30 to 33 are determined.

  Subsequently, in step 165, the walking routes 44 to 46 to the waiting points 34 to 36 determined from the portable device position 20 are calculated by the same method as the calculation of the walking route 33. Furthermore, the movement distance and movement time of the walking routes 44 to 46 (for example, a result of dividing the movement distance by a predetermined walking speed) are calculated.

  Subsequently, in step 170, based on the calculation result of step 165, information such as the walking route 44 to 46, the moving distance of the walking route 44 to 46, the moving time, the expected arrival time to the meeting points 34 to 36, etc. 7 to send.

  Receiving this information, the portable device 7 displays the received information on the display as shown in FIG. If there are a plurality of waiting points received, a display prompting the user to select one of them is displayed. If there is only one waiting point received, a display asking whether to accept the waiting point is displayed. . And the content of the response operation of the portable device holder 6 according to those displays is transmitted to the portable device 7 as response data.

  In step 175 following step 170, the control circuit 17 of the vehicle 2 waits until response data data is received from the portable device 7, and when the response data is received, the content selects one of the transmitted waiting points. If it is the content of the fact, or the content of accepting the one waiting point that has been transmitted, then step 180 is executed, and the other contents (not to select one of the plurality of waiting points that have been transmitted) If it is the content or the content indicating that the one waiting point transmitted is not accepted), the execution of the program 100 is terminated.

  In step 180, the selected meeting point or the accepted meeting point is determined as the official destination, the execution of the program 100 is terminated, and then the guidance route calculation process and the subsequent route guidance process are executed.

  By executing the program 100 as described above, when there is an access from the registered portable device 7 (see steps 105 and 110), the control circuit 17 receives the portable device position information from the portable device 7 (step 115). If the mobile device position can be route-guided (see step 120) and the mobile device position is on a high priority road (see step 125), the mobile device position is set as a temporary destination. Then, the guidance route calculation process is performed (see step 130), and the temporary destination and the guidance route are notified to the portable device 7 (see step 135). When the consent data is received from the portable device 7 (see step 140), the temporary destination is determined as the official destination (see step 145).

  Thereafter, the control circuit 17 calculates a guide route to the formal destination, and transmits an expected arrival time to the destination determined by the calculated route to the portable device 7. Then, route guidance based on the calculated route is performed, and when the vehicle 2 reaches the vicinity of the destination, the fact is transmitted to the portable device 7.

  In addition, when the mobile device position is not route guidance possible (see step 120), and when the route guidance is possible but the mobile device position is not on a high priority road (see step 125), the peripheral point search mode (see step 125). Steps 150 to 180 are entered.

  Then, in the peripheral point search mode, one or a plurality of peripheral meeting points 34 to 36 that are distant from the portable device position 20 are extracted (see steps 150 to 160), and the extracted waiting points 34 to 36 are walked as temporary destinations. Guidance routes 44 to 46 are calculated (see step 165), and information such as the calculated meeting points 34 to 36 and walking routes 44 to 46 is notified to the portable device 7 (see step 170).

  Then, after the notification of the meeting points 34 to 36, the approval of the one meeting point notified based on the reception of the designation for selecting one of the plurality of meeting points 34 to 36 from the portable device 7. Based on the reception of the designation, the meeting point related to the designation or approval is set as an official destination.

  Thereafter, the control circuit 17 calculates a guide route to the formal destination, and transmits an expected arrival time to the destination determined by the calculated route to the portable device 7. Then, route guidance based on the calculated route is performed, and when the vehicle 2 reaches the vicinity of the destination, the fact is transmitted to the portable device 7.

  In this way, by causing the portable device 7 side (that is, the portable device 7 and the portable device holder 6) to select one of the plurality of waiting points 34 to 36 extracted from the periphery of the portable device position 20, it is conventionally possible. However, since the choices of the meeting points 34 to 36 are increased and the determination of the portable device 7 is reflected in the official destination setting, even if the current position of the portable device 7 is an inconvenient point for route guidance, The possibility that the owner of the portable device 7 and the driver of the vehicle can easily meet each other increases.

  Further, when extracting the meeting points 34 to 36, the control circuit 17 sets the inside of the circles 26 to 28 centering on the portable device position 20 as the search range of the route guidance possible point, and sequentially increases the diameters of the circles. In the process of expanding the search range, for each of a plurality of roads around the current position of the mobile device 7, the points that first entered the search range are route guidance possible points 30 to 30. 32 (see steps 150 and 158).

  Further, the control circuit 17 calculates a route (for example, route 33) from the current position of the portable device 7 to the route guideable point 30 to 32 to the route guideable point, and the route in the calculated route A point that first reaches a road with a guideable point (for example, road 21) is extracted as a meeting point (for example, point 34) (see step 160). In this way, the distance that the holder of the portable device 7 moves to the meeting point is shortened, so the convenience of meeting is enhanced.

  Further, when extracting the route guidance possible point, the control circuit 17 first extracts the route guidance possible point only from the high priority roads 21 to 23 (see step 150), and then routes from the high priority roads 21 to 23. Only when the guideable point cannot be extracted (see step 155), route guideable points are extracted from the low priority roads 24 to 25 (see step 158).

  That is, when extracting the meeting points 34 to 36, the control circuit 17 acquires priority information of the plurality of roads 21 to 25 around the portable device position 20, and among the plurality of roads 21 to 25, When there is a route guidance possible point on the priority roads 21 to 23, the meeting points 34 to 36 are extracted from only the high priority roads 21 to 23. .

  By doing in this way, also on the vehicle navigation apparatus 1 side, it is possible to extract the waiting points 34 to 36 in consideration of the evaluation of easiness of running on the road, so the owner of the portable device 7 and the vehicle 2 The possibility of meeting with other drivers is further increased.

(Other embodiments)
As mentioned above, although embodiment of this invention was described, the scope of the present invention is not limited only to the said embodiment, The various form which can implement | achieve the function of each invention specific matter of this invention is included. It is.

  For example, in the execution of the program 100, the control circuit 17 informs the driver that there has been an access after making an affirmative determination in step 110, and from which portable device 7 the image display device 12 has been accessed. (For example, an identification number or a telephone number of a mobile phone) may be displayed. Further, the control circuit 17 receives a selection as to whether or not to meet with the portable device 7 from the driver via the operation unit 13 or by voice, and when there is a selection to meet, setting of waiting points after step 115 is performed. The mode may be shifted.

  Moreover, in the said embodiment, the ease of running of each link is previously recorded on map data. However, the present invention is not limited to this, and the control circuit 17 may calculate the ease of travel of each link when necessary. Information used for the calculation includes the width of the link, the vehicle width of the vehicle 2, the ease of running of the adjacent link, and the like.

  For example, the greater the link width, the higher the link easiness of travel may be calculated. In addition, a link having a width greater than twice the vehicle width of the vehicle 2 is given a degree of ease of travel higher than the above-mentioned reference value, and a link having a width less than twice the vehicle width is A degree of ease of running that is lower than the reference value may be given. Further, the higher the runnability of the link B adjacent to a certain link A, the higher the runnability of the link A may be.

  If the control circuit 17 determines in step 120 of the program 100 that route guidance to the current position of the portable device 7 is impossible, the control circuit 17 limits the target to a high priority road in the subsequent step 150. Alternatively, route guidance possible points may be extracted for all roads.

  Further, data that needs to be updated, such as registered portable device data, is not limited to the storage medium of the map data acquisition unit 16, and the data is retained even when the main power supply of the vehicle navigation device 1 is stopped. It may be stored in a storage medium that can continue (for example, flash memory, EEPROM, backup RAM). In that case, the storage medium of the map data acquisition unit 16 does not have to be a writable storage medium such as an HDD, and may be a non-writable storage medium such as a DVD or a CD-ROM.

  In the above embodiment, each function realized by the control circuit 17 executing the program is realized by using hardware having those functions (for example, an FPGA capable of programming the circuit configuration). You may come to do.

  Moreover, in the said embodiment, although a navigation apparatus is a vehicle-mounted type, if a navigation apparatus can be carried in and used in a vehicle, the thing of the type which a person can carry may be used. For example, a mobile phone having a navigation device function also corresponds to the navigation device of the present invention.

1 is a schematic diagram of a communication system according to an embodiment of the present invention. 1 is a configuration diagram of a vehicle navigation device 1. FIG. 3 is a flowchart of a program 100 executed by a control circuit 17. 3 is a flowchart of a program 100 executed by a control circuit 17. It is a figure which shows the procedure which searches the route guidance possible points 31 and 32. FIG. It is a figure which shows the procedure which determines the waiting point. It is a figure which shows the extracted meeting points 34-36 and the route 44-46 to them from the portable device position 20. FIG. It is a figure which shows the display content in the portable device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle navigation apparatus 2 Vehicle 6 Portable machine owner 7 Portable machine 20 Portable machine position 21-25 Road 26-28 Search circle 30-32 Route guidance possible point 33, 44-46 Walking route 34-36 Meeting point

Claims (4)

A navigation device for guiding a route to a set destination,
Receiving means (115) for receiving information on the current position of the portable device (7) from the portable device (7);
Extraction means (150-160) for extracting a plurality of meeting points away from the current position of the portable device (7);
A notification means (170) for notifying the portable device (7) of the information of the extracted waiting points;
Setting means (180) for setting a waiting point according to the designation as a destination based on reception of designation for selecting one of the waiting points from the portable device (7). Navigation device.   The said extraction means (150-160) acquires the information of the easiness of running of the some roads around the said current position of the said portable machine (7), and easiness of running is a reference value among these roads The navigation device according to claim 1, wherein the plurality of meeting points are extracted from the road.   The extraction means uses the inside of a circle centered on the current position of the portable device (7) as a search range, and expands the search range by sequentially increasing the diameter of the circle. In the process, for each of a plurality of roads around the current position of the portable device (7), a point first entering the search range is determined as a preparation point, and the portable device (7) The navigation apparatus according to claim 1 or 2, wherein a route from the current position to the preparation point is calculated, and a point that first reaches the road with the preparation point in the route is extracted as a meeting point. . A program used for a navigation device for guiding a route to a set destination,
Receiving means (115) for receiving information on the current position of the portable device (7) from the portable device (7);
Extraction means (150-160) for extracting a plurality of meeting points away from the current position of the portable device (7);
The notification means (170) for notifying the portable device (7) of the information of the extracted waiting points, and after the notification of the waiting points, from the portable device (7), out of the waiting points A program for causing a computer to function as setting means (180) for setting a meeting point according to the designation as a destination based on reception of designation for selecting one.

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