JP2007071665A - Navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation system using a vehicle-mounted navigation device capable of quickly and properly meeting each of a plurality of persons existing even in different places. <P>SOLUTION: With a portable terminal 210 possessed by a person to meet a driver, the present position information of the portable terminal 210 is transmitted to the vehicle-mounted navigation device 100. The vehicle-mounted navigation device 100 displays the present position of all individual portable terminals 210 in a map screen. The vehicle-mounted navigation device 100 also transmits the present position of the vehicle, VICS information and prediction time of arrival at the meeting place to each portable terminal 210. Also, the transmission/reception of the present position information is made possible between each of portable terminals 210. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a system for performing communication between an in-vehicle navigation device and a portable terminal having a current position detection function.

  As a conventional technique, Patent Document 1 proposes an in-vehicle navigation device that can promptly and accurately guide a person who picks up even if the person who picks up the vehicle does not know. Specifically, current position information is transmitted from a communication terminal with a current position detection function carried by a person who is picked up to a communication terminal carried by a person who is picking up. Further, the current position information is transmitted to the in-vehicle navigation device using a short-range wireless communication method such as Bluetooth (registered trademark, hereinafter omitted). The in-vehicle navigation device sets the received current position information as a destination, performs a route search, and guides the vehicle according to the searched route. In addition, when a person who is picked up moves, the current position information after the movement is also transmitted to the in-vehicle navigation device, and the in-vehicle navigation device uses the current position information after the movement as a destination to re-route the route. Searching.

Further, in Patent Document 1, the current position information of the vehicle and the estimated arrival time are transmitted to a communication terminal carried by a person who is picked up, and the person who is picked up can check the information. it can. As a result, if the arrival is delayed due to traffic jams or the like, the person who will be picked up can spend time effectively until then.
JP 2003-106854 A

  However, the technique described in Patent Document 1 assumes a case where there is only one person to be picked up. Therefore, for example, when a plurality of people are waiting at a predetermined place and each person is heading for the meeting place from another place, the destination set by the in-vehicle navigation device (with a communication terminal carried) It is not possible to apply this because the current position of the person is not limited to one.

  The present invention has been made in view of the above problems, and when there are a plurality of people to be picked up and each person is in a different place, the person can be picked up quickly and accurately. An object of the present invention is to provide a navigation system using an in-vehicle navigation device capable of performing the above.

  In order to achieve the above object, a navigation system according to claim 1 is a vehicle-mounted navigation device that displays a plurality of portable terminals carried by each of a plurality of persons meeting with a vehicle driver, and a map around the current position of the vehicle. The mobile terminal transmits first position detection means for detecting a current position and information on the current position detected by the first position detection means to the in-vehicle navigation device. First in-vehicle navigation device receives the current position information transmitted from each of the plurality of portable terminals by the first transmission means, and outputs the current position information so that the driver can grasp it. 1 output means.

  As a method for outputting the current positions of the plurality of portable terminals so that the driver can grasp, for example, a method of displaying a mark indicating each current position at a corresponding point on the map screen of the in-vehicle navigation device is conceivable. According to this, since the driver can grasp where each user of the mobile terminal is currently located, the driver determines the order of pick-up depending on the positional relationship, and also determines the appropriate meeting place be able to. Therefore, a plurality of people can be picked up quickly and accurately.

  In the navigation system according to claim 2, the in-vehicle navigation device is attached to the map data storage means for storing the map data to which the characteristics of each road are attached, the setting means for setting the destination, and the map data. In consideration of the characteristics of each road, route search means for searching for an optimum route from the current position of the vehicle to the destination set by the setting means is provided. Accordingly, for example, by setting the destination based on the current position of each person carrying the mobile terminal, the driver can quickly reach the destination.

  The navigation system according to a third aspect is characterized in that the route search means searches for a route that passes through each current position of the mobile terminal. As a result, each person carrying the portable terminal can be picked up by the vehicle quickly and accurately.

  The navigation system according to claim 4, wherein the in-vehicle navigation device transmits information related to a traveling state of the vehicle acquired by the acquiring unit to each of the plurality of portable terminals. A second transmission unit configured to receive the information on the traveling state of the vehicle transmitted by the second transmission unit, and to output the information so that a person who carries the vehicle can grasp the second transmission unit. Output means. According to this, since each person carrying the portable terminal can grasp the current traveling state of the vehicle, according to the information regarding the traveling state of the vehicle, for example, An effect can be obtained.

  The navigation system according to claim 5 is characterized in that the acquisition means of the in-vehicle navigation device acquires the current position of the vehicle as information relating to the traveling state of the vehicle. According to this, since each person carrying the portable terminal can grasp the current position of the vehicle, time can be effectively spent according to the current position. Moreover, since it can also move so that it may approach a vehicle itself, it can be picked up by a vehicle more rapidly.

  The navigation system according to claim 6 is characterized in that the acquisition means of the in-vehicle navigation device acquires information relating to a traffic state of a road as information relating to a traveling state of the vehicle. Information related to road traffic information includes traffic congestion information by VICS (registered trademark, hereinafter omitted), construction information, and the like. According to this, each person carrying the mobile terminal can be picked up more quickly by the vehicle, for example, by moving to a place not affected by traffic jams. In addition, each person carrying the mobile terminal can predict the arrival time of the vehicle to some extent according to the traffic state of the road, so that the time up to that time can be effectively spent.

  The navigation system according to claim 7, wherein the acquisition unit of the in-vehicle navigation device is an estimated time at which the vehicle arrives at the destination when the vehicle travels on the route searched by the route search unit as information related to the traveling state of the vehicle. It is characterized by acquiring. The optimum route searched by the route search means considers road characteristics (speed limit, road width, presence / absence of signal, etc.), and therefore calculates the estimated time of arrival at the destination based on the road characteristics. be able to. Thereby, each person carrying the mobile terminal can spend time until the vehicle arrives effectively.

  The navigation system according to claim 8 is characterized in that the acquisition means of the in-vehicle navigation device acquires an estimated time of arrival at the destination in consideration of information about the traffic state of the road acquired by itself. As a result, an accurate estimated arrival time of the vehicle can be acquired.

  In the navigation system according to claim 9, after the first transmission unit of the portable terminal transmits the current position information of the portable terminal to the in-vehicle navigation device once, only when the current position of the portable terminal subsequently changes. The current position information is transmitted to the in-vehicle navigation device. The driver only needs to know the current position of each person carrying the mobile terminal, so the current position information can be transferred to the in-vehicle navigation device even though each person carrying the mobile terminal is not moving. There is no point in sending. Conversely, power for transmission is wasted. Claim 9 takes this into consideration.

  The navigation system according to claim 10, wherein the first transmission unit of the portable terminal mutually transmits the current position information of each portable terminal, and the second output unit of the portable terminal is transmitted by the first transmission unit. The present invention is characterized in that current position information transmitted from each portable terminal is received and output so that a person carrying each portable terminal can grasp. For example, the current position information output method includes a method of displaying a mark indicating the current position of each person and a map around the current position on the screen of the mobile terminal, or displaying an address. Thus, by transmitting and receiving the current position information between the mobile terminals, each person can reliably meet. Also, an appropriate meeting place can be reset according to the positional relationship of each person.

  Embodiments of the navigation system of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of a navigation system according to the present embodiment and information communicated between mobile terminals. As shown in the figure, the navigation system of the present embodiment includes an in-vehicle navigation device 100, a portable terminal 200 carried by a driver, and a plurality of portable terminals 210 carried by a person waiting for the driver (see FIG. In this case, since there are three people, three portable terminals 210a, b, and c are shown).

  The navigation system according to the present embodiment is configured such that the current position information of each mobile terminal 210 is transmitted to the in-vehicle navigation device 100 via the driver's mobile terminal 200 and displayed on the map screen of the in-vehicle navigation device 100. . In addition, the current traveling state of the vehicle (current position, VICS information, estimated arrival time) is transmitted to each portable terminal 210 via the portable terminal 200 of the driver. Further, the current position information can be transmitted between the mobile terminals 210. Details will be described below.

  FIG. 2 is a block diagram showing the overall configuration of the in-vehicle navigation device 100 and the driver's portable terminal 200 that performs near field communication with the in-vehicle navigation device 100. As shown in the figure, the in-vehicle navigation device 100 includes a position detector 1, a map data input device 6, an operation switch group 7, an external memory 9, a display device 10, a sound output device 11, a remote control sensor 12, a remote control 13, a VICS. An information receiver 14, a BT communication device 15, and a control circuit 8 connected thereto are configured. Each component will be described below.

  The position detector 1 includes a known geomagnetic sensor 2, a gyroscope 3, a distance sensor 4, and a GPS receiver 5 for GPS (Global Positioning System) that detects the position of the vehicle based on radio waves from a satellite. Have. Since these have errors of different properties, they are configured to be used while being complemented by a plurality of sensors. Depending on the accuracy of each sensor, the position detector 1 may be constituted by a part of the above-described parts, and a steering rotation sensor (not shown), a vehicle speed sensor for each rolling wheel, or the like may be used. The position detector 1 detects the current position of the vehicle, and the control circuit 8 to be described later can recognize, for example, which position the vehicle is traveling on when searching for a route. It can be determined whether or not the vehicle is traveling along the route.

  The map data input device 6 displays road map data indicating the connection structure of roads, background data for displaying backgrounds related to topography and facilities, and place names when displaying road maps using the road map data. For this purpose, various types of map data such as character data are input to the control circuit 8. The map data input device 6 includes a storage medium for storing the above-described map data. As the storage medium, a DVD-ROM or a hard disk is generally used because of the amount of data, but other memory cards or the like are used. A storage medium may be used.

  Here, the map data stored in the storage medium of the map data input device 6 will be briefly described. First, the road map data includes node data regarding points where a plurality of roads intersect, merge and branch, and link data regarding roads connecting the points. The node data is composed of data such as node ID, node coordinates, node name, link ID of all links connected to the node, intersection type, etc. The The link data is obtained from each data such as a link ID with a unique number for each road, link length, start and end coordinates, road type such as expressway and general road, road width, link travel time, and gradient degree. It is configured.

  For example, when searching for a route from a departure place to a destination, a passing cost indicating the ease of passing through each link and node is calculated. This passing cost is calculated according to the characteristics of each link (link length, road type, road width, etc.) and the type of straight travel and right / left turn at each node. Then, for an arbitrary route from the departure point to the destination, a route that minimizes the added value of the passing cost of each link and each node constituting each route is searched using a route search method such as the Dijkstra method. Is done.

  The background data is configured as data in which each facility or terrain on the map is associated with the corresponding coordinates on the map. Regarding the facility, data such as a telephone number and an address are also stored in association with the facility. The character data is used to display place names, facility names, road names, and the like on a map, and is stored in association with coordinate data corresponding to the positions to be displayed.

  Therefore, a map including roads can be displayed by combining background data and character data with this road map data. In addition to displaying a map, the road map data is used to give the shape of a road when performing map matching processing.

  As the operation switch group 7, for example, a touch switch or a mechanical switch integrated with the display device 10 to be described later is used. For example, the operation switch group 7 is used to set a starting point and a destination when searching for a route.

  The external memory 9 includes a storage medium such as a memory card or a hard disk. The external memory 9 stores various data such as text data, image data, and audio data stored by the user.

  The display device 10 is configured by, for example, a liquid crystal display, and is usually generated on the screen of the display device 10 by the own vehicle position mark corresponding to the current position of the vehicle and the map data input from the map data input device 6. A road map around the subject vehicle is displayed. In addition, various screens such as a menu screen and a setting screen are displayed on the display device 10 by operating the operation switch group 7. Further, in the present embodiment, the display device 10 displays a mark indicating the current position of each mobile terminal 210 sent from each mobile terminal 210 so as to overlap the corresponding point on the road map.

  The voice output device 11 is composed of a speaker, an audio amplifier, and the like, and is used when voice guidance such as route guidance is performed.

  The in-vehicle navigation device 100 according to the present embodiment includes a remote control terminal (hereinafter referred to as a remote controller) 13 and a remote control sensor 12. It is possible to perform navigation operations.

  The VICS information receiver 14 is a device that receives information such as road traffic information distributed from the VICS center via beacons laid on the road and FM broadcast stations in various places. Information received by the VICS information receiver 14 includes, for example, traffic jam information regarding the degree of traffic jam on each road, regulation information such as traffic closures due to accidents and construction, and closure of entrances and exits on highways. In the present embodiment, the information received by the VICS information receiver 14 is transmitted to each mobile terminal 210 via the driver's mobile terminal 200.

  The BT communication device 15 is a device that performs wireless communication with another communication terminal having a Bluetooth communication function based on a well-known Bluetooth communication method. This Bluetooth communication system is a kind of short-range communication system, and in this embodiment, the communicable range is within the range of no cabin. Further, the BT communication device 15 can register a communication terminal for performing wireless communication, and when the registered communication terminal is in the passenger compartment, a communication line with the communication terminal is automatically established. In the present embodiment, the portable terminal 200 carried by the driver is registered in the BT communication apparatus 15, that is, the BT communication apparatus 15 and the portable terminal 200 are in a communicable state while the driver is in the passenger compartment. And each portable terminal 210 and the vehicle-mounted navigation apparatus 100 (BT communication apparatus 15) communicate via this portable terminal 200. FIG.

  The control circuit 8 is configured as a normal computer, and includes a well-known CPU, ROM, RAM, I / O, and a bus line for connecting these configurations. In the ROM, a program to be executed by the control circuit 8 is written, and according to this program, the CPU performs various arithmetic processes using the respective units. For example, if the user has set the starting point and destination, the map data is used to search for a plurality of candidate routes from the starting point to the destination, and the driver guides one of those routes to the guide route. Is set, the vehicle is guided and guided along the guidance route. Even if the route is not set, the current position of the vehicle is detected based on the signal from the position detector 1, and the matching process is performed so that it is located on the road of the map data.

  Further, the control circuit 8 receives the current position information of each mobile terminal 210, which is a feature of the present invention, via the driver's mobile terminal 200, and in order to make the driver know the current position of each mobile terminal 210, The current position information is displayed on the screen of the display device 10. In addition, a process of transmitting the current position of the vehicle, the VICS information, and the estimated arrival time to the meeting place to each mobile terminal 210 via the mobile terminal 200 is performed.

  The mobile terminal 200 has a Bluetooth communication function as described above, and can be used as a normal mobile phone in addition to a communication bridge between each mobile terminal 210 and the in-vehicle navigation device 100.

  FIG. 3 is a diagram illustrating an appearance of the portable terminal 210 that is carried by each person waiting for the driver. The portable terminal 210 includes a GPS receiver (not shown) that receives a signal transmitted from a GPS satellite, and a control circuit (not shown) that controls various processes of the portable terminal 210 is a GPS receiver. Based on the signal received by the receiver, its current position is calculated. Further, as shown in the figure, the portable terminal 210 is provided with a transmission switch 211 that transmits its current position information to the in-vehicle navigation device 100 and other portable terminals 210 via the portable terminal 200. In addition, the mobile terminal 210 has a display screen 212 that displays various types of information, and displays the received current driving situation of the vehicle on the display screen 212. Further, the mobile terminal 210 can be used as a normal mobile phone, and therefore includes a number button 213 for designating the telephone number of the other party. The portable terminal 210 specifies whether to transmit its current position information to the in-vehicle navigation device 100 or to another portable terminal 210, for example, after pressing the transmission switch 211, the telephone number of the transmission destination Is designated by the number button 213. In addition, the telephone number or mail address of the driver's mobile terminal 200 or other mobile terminal 210 is registered in advance in association with the registration number, and when transmitting the current position information of the driver, the transmission switch 211 is set. After the button is pressed, the portable terminal 200 or 210 may be designated by designating a number corresponding to the registration number with the number button 213.

  FIG. 4 is a diagram showing a communication sequence between the in-vehicle navigation device 100 and each portable terminal 210 described above. As described above, this communication is performed via the driver's portable terminal 200. First, the portable terminal 210 transmits its current position information to the in-vehicle navigation 100 by the position information transmission process. The in-vehicle navigation device 100 displays a mark indicating the current position on the display device 10 at a corresponding point on the map by the position information display process. When the destination is set by the driver who has confirmed the current position of the mobile terminal 210, the in-vehicle navigation device 100 searches the optimum route to the destination by the destination setting process and guides the vehicle according to the optimum route. To do. While the vehicle is moving toward the destination, the in-vehicle navigation device 100 periodically transmits the current position information of the vehicle (including VICS information and estimated arrival time) by the position information transmission process. To 210. When the mobile terminal 210 receives the current position information of the vehicle, the mobile terminal 210 displays the current position information of the vehicle on its own display screen 212 by display processing of the position information. Thereafter, when the position of the mobile terminal 210 moves, the above-described communication is repeated. Accordingly, the driver and the person carrying the portable terminal 210 can always share information such as the current position of each other.

  FIG. 5 is a diagram illustrating a communication sequence between the mobile terminals 210. When each mobile terminal 210 transmits its current position information to another mobile terminal 210 by a position information transmission process, the user presses the transmission switch 211 to transmit the current position information received by the GPS receiver. To do. At this time, the mobile terminal 210 is designated to transmit the current position information. On the other hand, when the current position information of another mobile terminal 210 is received, the current position information is displayed on the display screen 212 by the position information display process. Moreover, when the position of the portable terminal 210 moves, the above-described communication is repeated again. Therefore, people carrying each portable terminal 210 can always share the current position of each other.

  Next, each process shown in the communication sequence diagram will be described in detail with reference to the flowcharts shown in FIGS.

  FIG. 6 is a flowchart showing a position information transmission process to the in-vehicle navigation device 100 in each portable terminal 210. First, in step S10, a signal corresponding to the current position from a GPS satellite is periodically received. Next, in step S11, a process for transmitting the current position information to the in-vehicle navigation device 100 is started. Specifically, the process starts when a person carrying each portable terminal 210 presses the transmission switch 211 and designates the in-vehicle navigation device 100 as a transmission destination. Note that, as described above, the method of designating the in-vehicle navigation device 100 as the transmission destination includes a method of designating with the telephone number or e-mail address of the driver's mobile terminal 200 as described above.

  Next, in step S12, it is determined whether or not the latest signal from the GPS satellite has been normally received by the GPS receiver. If the latest signal from the GPS satellite is not received, a negative determination is made in this step, and the process returns to step S10 and tries to receive the latest current position information again. In this case, it is considered that the mobile terminal 210 is in a place (such as an underground mall) where radio waves do not reach. On the other hand, when the latest signal from the GPS satellite is received, this step is affirmed and the process proceeds to step S13.

  In step S13, it is determined whether or not the current position information is actually transmitted to the in-vehicle navigation device 100. Specifically, it is determined whether or not the transmission switch 211 is pressed again by the user of the mobile terminal 210. Here, when the transmission switch 211 is pressed again by the user of the portable terminal 210, the present position information is transmitted to the in-vehicle navigation device 100, this step is affirmed and the current position information is transmitted in step S14. On the other hand, when the transmission switch 211 is not pressed again by the user of the portable terminal 210, this step is determined to be negative because the current position information is not transmitted to the in-vehicle navigation device 100, and the current position information is not transmitted and the process ends. .

  FIG. 7 is a flowchart showing the destination setting process in the in-vehicle navigation device 100. Note that this flowchart includes position information display processing performed by the in-vehicle navigation device 100 shown in FIG. Further, the control circuit 8 performs each process shown in FIG. First, in step S20, it is determined whether or not there is current position information received from the mobile terminal 210. Here, if there is no received current position information, a negative determination is made in this step, and this step is determined again. That is, this step is looped until the current position information is received from the portable terminal 210. On the other hand, if there is received current position information, an affirmative determination is made in this step, and the process proceeds to step S21.

  In step S <b> 21, all the current position information received from each mobile terminal 210 is displayed on the screen of the display device 10. Specifically, a mark indicating the current position information is displayed at a position corresponding to the current position on the map. At this time, the address of the current position may be displayed. As a result, the driver can accurately grasp where the person carrying each portable terminal 210 is currently located. Therefore, when the distance between the current position of each mobile terminal 210 and the meeting place is large, for example, when the distance is large, the driver can effectively use time by taking a detour.

  Next, in step S22, it is determined whether or not to set a destination. Specifically, the determination is made based on whether or not a switch for setting the destination is pressed by the driver. Here, if the destination is not set, this step is negatively determined and the subsequent processing is not performed. In this case, it is considered that the driver goes to the meeting place or the current position of each portable terminal 210 by himself / herself on the basis of the map displayed on the screen. On the other hand, when the destination is set, this step is affirmed and the process proceeds to step S23.

  In step S23, the destination and waypoint are set by the operation of the driver. In addition to the predetermined meeting place, the destination set here may be a place suitable for waiting based on the current position relationship of each mobile terminal 210. The transit point set here is the current position of each mobile terminal 210 since it is assumed that the user of each mobile terminal 210 is picked up by the vehicle.

  Next, in step S24, an optimum route from the current location of the vehicle to the set destination (in the case of setting a waypoint, an optimum route via the waypoint) is searched. Specifically, as described above, a cost is assigned to each link and node constituting the road map data according to each condition, and a route with the smallest added value of the cost among the routes from the current location to the destination is selected. calculate. In addition, since the cost given to a link and a node differs according to conditions, such as a route with the shortest travel distance and a route with the shortest travel time, a plurality of optimum routes corresponding to each condition are searched. In step S25, a route for guiding and guiding the vehicle is set among the plurality of searched routes. This guidance route is set based on a driver's selection operation. Thereafter, in step S26, the vehicle is guided by voice or screen display according to the set guidance route. At that time, the in-vehicle navigation device 100 transmits the current position of the vehicle, the VICS information, and the estimated arrival time at the meeting place to each portable terminal 210 as the vehicle moves. FIG. 8 is a flowchart showing the processing at this time. Hereinafter, this flowchart will be described. The control circuit 8 performs each process in this flowchart.

  First, in step S30, it is determined whether or not the GPS receiver 5 has received the latest signal corresponding to the current position transmitted from a GPS satellite. Here, if the latest signal from the GPS satellite is not received, a negative determination is made in this step, and the same determination is performed again. That is, this step is looped until the latest signal from the GPS satellite is received. As a case where this step is negatively determined, there is a case where the vehicle is traveling in a place where radio waves do not reach, such as when the vehicle is traveling in a tunnel. On the other hand, if the latest signal from the GPS satellite has been received, the process proceeds to step S31.

  Next, in step S31, it is determined whether there is VICS information such as traffic jam information received by the VICS information receiver 15. If there is VICS information, an affirmative determination is made in this step, and the process proceeds to step S32. In step S 32, the VICS information, the current vehicle position information, and the estimated arrival time at the meeting place are transmitted to each mobile terminal 210. Here, the estimated arrival time at the meeting place is a time obtained by subtracting the time corresponding to the VICS information from the time calculated from the distance from the current position to the meeting place and the average speed of the vehicle. For example, when a traffic jam occurs on the route to the meeting place, the time to be reduced is determined according to the traffic jam degree. Thus, it can be said that this estimated arrival time reflects the current road traffic situation and is therefore highly accurate.

  On the other hand, if there is no VICS information in step S31, a negative determination is made in this step, and the process proceeds to step S33. In step S <b> 33, the current position information of the vehicle and the estimated arrival time at the meeting place are transmitted to each mobile terminal 210. The estimated arrival time transmitted here is a time calculated from the distance from the current location to the meeting place and the average speed of the vehicle.

  Next, in step S34, it is determined whether or not the route guidance is finished. Here, if the route guidance has not been completed yet, this step is negatively determined, and the process returns to step S30. On the other hand, when the route guidance is finished, this step is affirmed and finished. That is, since the steps 30 to 34 are repeated until the route guidance is completed, the vehicle current position information and the like are periodically transmitted to each portable terminal 210. Then, the user of each portable terminal 210 confirms the current position information of the vehicle displayed on the display screen 212. In addition, since the current location information can be transmitted and received between the mobile terminals 210, the current position information of the other mobile terminals 210 can also be confirmed on the display screen 212.

  FIG. 9 shows a process performed by each mobile terminal 210 and a process for displaying information received by each mobile terminal 210 (current position information of other mobile terminals 210 such as current position information of the vehicle) on the display screen 212. It is a flowchart to show. Hereinafter, this flowchart will be described.

  First, in step S <b> 40, it is determined whether information has been received from other portable terminals 200 (in-vehicle navigation device 100) and 210. Here, when it is not received, a negative determination is made in this step, and this determination is performed again. That is, this step is looped until information is received from other portable terminals 200 and 210. On the other hand, when information is received from the other portable terminals 200 and 210, this step is affirmed and the process proceeds to step S41. In step S41, it is determined whether the received information includes VICS information. If the received information includes VICS information, an affirmative determination is made in this step, and the process proceeds to step S42. Since the received information includes VICS information, it can be said that the received information is information from the in-vehicle navigation device 100 (vehicle current position information, VICS information, estimated arrival time). In step S42, the received information (current vehicle position information, VICS information, estimated arrival time) is displayed on the display screen 212. As a result, the user of the portable terminal 210 can know where the vehicle is currently traveling and how long it will take to arrive at the meeting place. Can be used. Further, for example, when the road on which the vehicle is traveling is congested due to the VICS information, it is possible to change the meeting place and quickly meet the driver.

  On the other hand, when the VICS information is not included in the reception information from the other portable terminals 200 and 210 in step S41, it is determined in step S43 whether or not the estimated arrival time information is included in the reception information. . Here, when the estimated arrival time information is included in the received information, an affirmative determination is made in this step, and the process proceeds to step 44. Since the received information includes the estimated arrival time information, it can be said that the received information is information from the in-vehicle navigation device 100 (vehicle current position information, estimated arrival time). In step S44, the received information (current vehicle position information, estimated arrival time) is displayed on the display screen 212. As a result, the user of the portable terminal 210 can know where the vehicle is currently traveling and how long it will take to arrive at the meeting place. Can be used.

  On the other hand, when the predicted arrival time information is not included in the reception information from the other portable terminals 200 and 210 in step S43, the determination is negative in this step, and the process proceeds to step S45. Note that, since the received information does not include the estimated arrival time information, it can be said that the received information is the current position information from another mobile terminal 210. In step S45, the received information (current position information of the other portable terminal 210) is displayed on the display screen 212. Thereby, it is possible to meet with the user of the other portable terminal 210 without fail.

  As described above, in the navigation system of the present embodiment, since the current positions of a plurality of people waiting for the driver are all displayed on the screen of the in-vehicle navigation device 100, the driver can change the meeting place depending on the positional relationship of each person. Alternatively, it is possible to pick up in order from a person near the current position of the vehicle. In addition, the time at which each waiting person arrives at the meeting place is generally considered, so the driver can use his time effectively.

  Also, the person waiting for the driver can know the current position of the vehicle and the expected arrival time at the meeting place, so that the time until the vehicle arrives can be used effectively. It is also possible to head in the direction of the vehicle in order to quickly meet the driver. Furthermore, since VICS information is also displayed on the portable terminal 210, for example, when the road on which the vehicle is traveling is congested due to the VICS information, the meeting place is changed and the driver can be quickly met. Can do.

  Furthermore, since the current position can be shared with those who are meeting with the driver, it is possible to meet each other without fail.

  In addition, this invention is not limited to this embodiment, Based on the meaning of this invention, it can implement with a various form. For example, in the above-described mobile phone, communication between the in-vehicle navigation device 100 and each mobile terminal 210 is performed via the driver's mobile terminal 200. However, if the in-vehicle navigation device 100 has the same function as the mobile terminal 200, the mobile terminal 200 does not need to be used.

  Moreover, in the said implementation mobile phone, each portable terminal 210 received the information transmitted from the vehicle-mounted navigation apparatus 100 or the other portable terminal 210 irrespective of its intention. However, for the user of each portable terminal 210, once such information is received, it may be assumed that it is not necessary to receive such information frequently thereafter. Therefore, the user of each mobile terminal 210 may be able to request the in-vehicle navigation device 100 and other mobile terminals 210 to transmit their current position information and the like on their own will. In this case, for example, the mobile terminal 210 is provided with a request switch, and after the user presses the request switch, which mobile terminal 200, 210 is requested to request information by, for example, the registration number of each mobile terminal 200, 210 specify.

  Further, in the above embodiment, when setting the destination, it is left to the driver to determine whether or not to set the current position of each mobile terminal 210 as a waypoint. However, it is also possible to automatically set a waypoint in the order of the current position of the portable terminal 210 that is close to the current position of the vehicle among the portable terminals 210. As a result, the operation burden on the driver can be reduced, and the user of each portable terminal 210 can be quickly picked up.

  In the above embodiment, the user of each mobile terminal 210 transmits the current position information of each mobile terminal 210 to the other mobile terminals 200 and 210 by pressing the transmission switch 211. However, once transmitted in this manner, the current position may be automatically transmitted only when the position of each portable terminal 210 has moved. Thereby, the operation burden on the user of each portable terminal 210 can be reduced.

It is the figure which showed the schematic structure of the navigation system which concerns on this embodiment, and the information communicated between each portable terminal. It is the block diagram which showed the portable terminal 200 which communicates between the whole structure of the vehicle-mounted navigation apparatus 100 which concerns on this embodiment, and the vehicle-mounted navigation apparatus 100 in short distance. It is a figure which shows the external appearance of the portable terminal 210 carried by each of the several persons who meet with a driver. It is a figure which shows the communication sequence between the vehicle-mounted navigation apparatus 100 and each portable terminal 210. FIG. It is a figure which shows the communication sequence between each portable terminal. 10 is a flowchart showing a process of transmitting position information to the in-vehicle navigation device 100 in the mobile terminal 210. It is a flowchart which shows the process which displays the present position information of each portable terminal 210 in the vehicle-mounted navigation apparatus 100, and sets a destination based on it. 5 is a flowchart showing a process of transmitting information such as the current position of a vehicle to each mobile terminal 210 in the in-vehicle navigation device 100. 12 is a flowchart illustrating processing for displaying information received from other mobile terminals 200 and 210 on the display screen 212 in the mobile terminal 210.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Car-mounted navigation apparatus 1 Position detector 2 Geomagnetic sensor 3 Gyroscope 4 Distance sensor 5 GPS receiver 6 Map data input device 7 Operation switch group 8 Control circuit 9 External memory 10 Display apparatus 11 Voice output device 12 Remote control sensor 13 Remote control 14 VICS Information receiver 15 BT communication device 200, 210 Portable terminal 211 Transmission switch 212 Display screen 213 Number buttons

Claims (10)

A navigation system comprising a plurality of portable terminals carried by each of a plurality of persons meeting with a vehicle driver, and an in-vehicle navigation device for displaying a map around the current position of the vehicle,
The portable terminal is
First position detecting means for detecting a current position;
First transmission means for transmitting information on the current position detected by the first position detection means to the in-vehicle navigation device;
The in-vehicle navigation device is
A navigation system comprising: first output means for receiving current position information respectively transmitted from the plurality of portable terminals by the first transmission means and outputting the information so that a driver can grasp the current position information. The in-vehicle navigation device includes map data storage means for storing map data with characteristics of each road;
A setting means for setting a destination;
A route search means for searching for an optimum route from the current position of the vehicle to the destination set by the setting means in consideration of the characteristics of each road attached to the map data. Item 4. The navigation system according to item 1.   The navigation system according to claim 2, wherein the route search unit searches for a route that passes through each current position of the mobile terminal. The in-vehicle navigation device includes an acquisition unit that acquires information related to a traveling state of the vehicle;
Each of the plurality of mobile terminals includes a second transmission unit that transmits information on the traveling state of the vehicle acquired by the acquisition unit,
The portable terminal includes a second output unit that receives the information on the traveling state of the vehicle transmitted by the second transmission unit and outputs the information so that a person who carries the vehicle can grasp it. The navigation system according to any one of claims 1 to 3.   The navigation system according to claim 4, wherein the acquisition unit of the in-vehicle navigation device acquires a current position of the vehicle as information relating to a traveling state of the vehicle.   The navigation system according to claim 4 or 5, wherein the acquisition unit of the in-vehicle navigation device acquires information regarding a traffic state of a road as information regarding a traveling state of the vehicle.   The acquisition unit of the in-vehicle navigation device acquires, as information related to the traveling state of the vehicle, an estimated time of arrival at the destination when the vehicle travels on the route searched by the route search unit. The navigation system according to any one of claims 4 to 6.   The navigation system according to claim 7, wherein the acquisition unit of the in-vehicle navigation apparatus acquires an estimated time of arrival at the destination in consideration of information regarding the traffic state of the road acquired by the in-vehicle navigation apparatus.   The first transmission means of the mobile terminal transmits the current position information of the mobile terminal to the in-vehicle navigation device, and then transmits the current position information of the mobile terminal only when the current position of the mobile terminal changes thereafter. The navigation system according to claim 1, wherein the navigation system is transmitted to a navigation device. The first transmission means of the portable terminal transmits the current position information of each portable terminal to each other,
The second output means of the portable terminal receives the current position information transmitted from each portable terminal by the first transmitting means, and outputs it so that a person carrying each portable terminal can grasp it. The navigation system according to any one of claims 1 to 9, wherein:

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