WO2014208154A1 - 位置情報共有システム、位置情報共有方法、及び位置情報共有プログラム - Google Patents
位置情報共有システム、位置情報共有方法、及び位置情報共有プログラム Download PDFInfo
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- WO2014208154A1 WO2014208154A1 PCT/JP2014/057896 JP2014057896W WO2014208154A1 WO 2014208154 A1 WO2014208154 A1 WO 2014208154A1 JP 2014057896 W JP2014057896 W JP 2014057896W WO 2014208154 A1 WO2014208154 A1 WO 2014208154A1
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- vehicle
- terminal
- side communication
- mobile terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/36—Input/output arrangements for on-board computers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0205—Details
- G01S5/021—Calibration, monitoring or correction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/024—Guidance services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/48—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for in-vehicle communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
Definitions
- the present invention relates to a location information sharing system, a location information sharing method, and a location information sharing program.
- a position information sharing system for sharing a user position, which is the position of each user of a plurality of mobile terminals, between the plurality of mobile terminals (for example, Patent Document 1).
- a location information sharing system acquires a mobile terminal that transmits its current position detected by a current position detection unit such as GPS (Global Positioning System) and the current position of the transmitted mobile terminal by communication or the like.
- a server that transmits the acquired current position of the mobile terminal to another mobile terminal.
- Such a location information sharing system is connected to the map information around the current position of the mobile terminal so that the mobile terminal can communicate with the position icon indicating the current position of the mobile terminal and the mobile terminal.
- the user position of each mobile terminal is shared by superimposing a position icon representing the current position of another mobile terminal on the display of each mobile terminal.
- each user can sensuously grasp the current position of another mobile terminal by visually recognizing the display of the mobile terminal.
- the accuracy of the detection result by GPS may be particularly deteriorated (for example, an environment in which there are objects that obstruct GPS satellite radio waves around the mobile terminal, the mobile terminal is inside the tunnel)
- an environment in which there are objects that obstruct GPS satellite radio waves around the mobile terminal, the mobile terminal is inside the tunnel In such an environment, there is a possibility that the accurate current position of the mobile terminal cannot be acquired. In such a case, sharing an inaccurate user position with another user is not preferable because it may confuse other users. Therefore, there has been a demand for a position information sharing system that can share an accurate current position with other portable terminals even when the detection accuracy of the current position detection means of the portable device is low.
- the present invention has been made in view of the above, and provides a location information sharing system, a location information sharing method, and a location information sharing program that allow each user to share a more accurate location with each other. With the goal.
- a position information sharing system is mounted on a vehicle and based on information obtained directly from the vehicle, which is the current position of the vehicle.
- Vehicle position detection means for detecting vehicle side communication means mounted on the vehicle for communication
- a communication enable / disable determining unit and when the communication enable / disable determining unit determines that communication between the vehicle side communication unit and the terminal side communication unit is possible, the terminal side communication unit Obtains the vehicle position of the vehicle on which the vehicle-side communication means is mounted from the vehicle position detection means via the vehicle-side communication means, and uses the obtained vehicle position as the user position of the portable terminal.
- the terminal side communication means determines that communication between the vehicle side communication means and the terminal side communication means is not possible, the terminal side communication means The terminal position of the portable terminal on which the means is mounted is acquired from the terminal position detection means, and the acquired terminal position is transmitted to another portable terminal as the user position of the portable terminal.
- the position information sharing method enables communication between a vehicle-side communication unit that is mounted on a vehicle and performs communication and a terminal-side communication unit that is mounted on a mobile terminal and performs communication.
- the terminal side communication means A vehicle position that is a current position of the vehicle detected based on information directly acquired from the vehicle by a vehicle position detection unit mounted on the vehicle on which the vehicle-side communication unit is mounted is determined as the vehicle position detection unit. And transmitting the acquired vehicle position as a user position of the mobile terminal to another mobile terminal, and the communication availability determining means step.
- the terminal-side communication means is mounted on a portable terminal on which the terminal-side communication means is mounted.
- the terminal position which is the current position of the mobile terminal detected by the GPS at the terminal position detection unit is acquired from the terminal position detection unit, and the acquired terminal position is used as the user position of the mobile terminal as another mobile terminal. Transmitting to.
- the location information sharing program according to the present invention is a location information sharing program that causes a computer to execute the method according to claim 5.
- the position information sharing system if communication between the vehicle side communication means and the terminal side communication means is possible, vehicle position detection mounted on the vehicle is detected. Since the vehicle position detected by the means is shared with other portable terminals, the detection result by the vehicle position detection means with higher detection accuracy than the terminal position detection means can be used for position sharing, and each user can It becomes possible to share a more accurate position.
- Embodiments schematically describe a location information sharing system, a location information sharing method, and a location information sharing program that allow users of a plurality of portable terminals to share each other's location information (hereinafter, user location) About.
- sharing location information is a state in which each user recognizes each other's location, and specific means and the like are arbitrary.
- each user's position information is displayed on the display of a mobile terminal owned by each user so that each user who has visually recognized the display recognizes the position information of each user. .
- the destination in addition to the position of each user, the destination is also common. That is, since a common destination is set in each user's mobile terminal, each user moves along a route from his / her position to the common destination, thereby waiting for another user, etc. It becomes possible to do.
- the center device 1 and the mobile terminal 2 and the case where the in-vehicle navigation 3 functions as a position information sharing system will be described.
- the mobile terminal 2 may be a mobile terminal 2 dedicated for navigation other than a smartphone.
- the in-vehicle navigation 3 is not limited to the navigation fixedly installed in the vehicle, and can be attached to and detached from the vehicle as long as it is a device with higher accuracy of the position detected than the portable terminal 2 in a normal position detection environment. It may be a navigation system installed.
- the functions as the center device 1, the portable terminal 2, and the in-vehicle navigation 3 in the position information sharing system can be obtained by the same configuration as the known center device, the portable terminal, and the in-vehicle navigation, the description thereof A configuration for achieving the function of sharing the position information will be described in particular.
- FIG. 1 is a block diagram illustrating a location information sharing system according to this embodiment.
- the position information sharing system includes a center device 1, a mobile terminal 2, and an in-vehicle navigation 3. Since the center device 1 can be configured in the same manner as a known center device, detailed description thereof is omitted.
- the mobile terminal 2 includes a speaker 21, a touch panel 22, a display 23, a current position detection unit 24, a communication unit 25, a control unit 26, and a data recording unit 27.
- the speaker 21 is a voice output unit that outputs information by voice based on the control of the control unit 26, and in particular, a guide for guiding a route searched by a route search unit (not shown) provided in the in-vehicle navigation 3. Means.
- the specific form of the sound output from the speaker 21 is arbitrary, and it is possible to output a synthesized sound generated as necessary or a sound recorded in advance.
- the touch panel 22 receives various manual inputs from the user when pressed by a user's finger or the like.
- the touch panel 22 is formed to be transparent or translucent, and is provided on the front surface of the display 23 so as to overlap the display surface of the display 23.
- a publicly known touch panel provided with operation position detecting means by a resistance film method or a capacitance method can be used.
- the display 23 is a display unit that displays an image guided by the collected information communication system, and in particular, a display unit that displays a map based on the map information stored in the map DB 27a.
- the specific configuration of the display 23 is arbitrary, and a flat panel display such as a known liquid crystal display or organic EL display can be used.
- the current position detection unit 24 is a terminal position detection unit that detects the current position of the mobile terminal 2.
- the current position detection unit 24 includes at least one of a GPS, a geomagnetic sensor, a distance sensor, and a gyro sensor (all not shown), and the current position (coordinates) and direction of the portable terminal 2 are known. Detect by method.
- the current position detector 24 is described as being for detecting the current position by GPS.
- terminal position the current position detected by the current position detection unit 24 of the portable terminal 2
- the position detected by the current position detection unit 34 of the in-vehicle navigation 3 described later.
- the position will be referred to as “vehicle position” as necessary.
- the communication unit 25 is a terminal-side communication unit that performs communication via the network with the center device 1 or with the communication unit 35 of the in-vehicle navigation 3 described later.
- the specific type and configuration of the network is arbitrary.
- Wireless communication means for the system can be used.
- the communication unit 25 uses a well-known Bluetooth (registered trademark) that communicates between the mobile wireless communication means that communicates with the center device 1 and the in-vehicle navigation 3. It is comprised as two communication means of the utilized wireless communication means.
- the control unit 26 is a control unit that controls the mobile terminal 2. Specifically, the CPU and various programs that are interpreted and executed on the CPU (a basic control program such as an OS, a specific function that is activated on the OS, and the like) And an internal memory such as a RAM for storing the program and various data.
- the location information sharing program according to the present embodiment is substantially installed in the mobile terminal 2 via an arbitrary recording medium or network, thereby substantially configuring each unit of the control unit 26.
- the control unit 26 is functionally conceptually provided with a communication availability determination unit 26a, an accuracy determination unit 26b, and a route search unit 26c.
- the communication availability determination unit 26 a is a communication availability determination unit that determines whether communication is possible between the communication unit 25 of the mobile terminal 2 and the communication unit 35 of the in-vehicle navigation 3.
- the accuracy determination unit 26b is an accuracy determination unit that determines whether or not the accuracy of the vehicle position detected by the current position detection unit 34 of the in-vehicle navigation 3 described later satisfies the reference accuracy.
- the route search unit 26c is route search means for searching for a guide route based on the destination when the mobile terminal 2 receives a destination setting for route guidance from the user.
- the “accuracy of the vehicle position” is an accuracy representing how close the position indicated as the detection result of the current position detection unit 34 of the in-vehicle navigation 3 is with the actual position of the in-vehicle navigation 3. is there.
- the specific acquisition method of the accuracy of this vehicle position is arbitrary, in this Embodiment, the road nearest to the said position from the position detected by the present position detection part 34 of in-vehicle navigation 3 It shall be acquired based on the shortest distance to the link. That is, when the shortest distance from the detected position to the road link is smaller than the predetermined reference distance, it is considered that the accuracy of the vehicle position is high, and the shortest distance from the detected position to the road link is the predetermined reference distance.
- the vehicle position accuracy is considered to be medium, and if the shortest distance from the detected position to the road link is greater than the predetermined reference distance, the vehicle position accuracy is considered to be low.
- the road link closest to the position can be identified with reference to the position detected by the current position detection unit 34 of the in-vehicle navigation 3 and map data stored in a map DB 27a described later.
- the predetermined reference distance can be preset in the data recording unit 27, for example.
- the degree of confidence is an index indicating the high accuracy of the vehicle position, and is specifically represented by three stages of “A”, “B”, and “C”.
- the degree of confidence “A” indicates that the accuracy of the vehicle position is high
- the degree of confidence “B” indicates that the accuracy of the vehicle position is medium
- the degree of confidence “C” indicates that the accuracy of the vehicle position is low.
- This degree of confidence is stored in a data recording unit 37 of the in-vehicle navigation 3 to be described later, and each time a vehicle position is detected by a current position detecting means of the in-vehicle navigation 3 to be described later, a new degree of confidence at that time is obtained.
- the data recording unit 37 is overwritten.
- the “reference accuracy” is an accuracy that serves as an index for determining whether the vehicle position or the terminal position is shared with other users, and is recorded in the data recording unit 37 of the in-vehicle navigation 3 in advance. Yes.
- the specific content of the reference accuracy is arbitrary, in this embodiment, the confidence level “B” is set as the reference accuracy. That is, when the accuracy of the vehicle position is the confidence level “A” or “B”, the accuracy of the vehicle position satisfies the reference accuracy, and when the accuracy of the vehicle position is the confidence level “C”, It is assumed that the accuracy does not meet the standard accuracy. A process for determining whether or not the accuracy of the vehicle position satisfies the reference accuracy will be described later.
- the data recording unit 27 is a recording unit that records a program and various data necessary for the operation of the position information sharing system, and is configured using, for example, a hard disk (not shown) as an external recording device.
- a hard disk not shown
- any other recording medium including a magnetic recording medium such as a magnetic disk or an optical recording medium such as a DVD or a Blu-ray disk can be used instead of or together with the hard disk.
- the data recording unit 27 includes a map database (hereinafter, the database is referred to as “DB”) 27a.
- DB map database
- the map DB 27a is map information storage means for storing map information.
- Map information includes, for example, road link data (road link number, connection node number, road coordinates, road type (including information for specifying whether the road is a general road or a highway), the number of lanes, and travel Regulations), node data (node numbers, coordinates), feature data (signals, road signs, guardrails, buildings, etc.), target feature data (intersections, temporary stop lines, railroad crossings, curves, ETC toll gates, highway exits, etc.) , Facility data (position of each facility, type of each facility, etc.), topographic data, map display data for displaying a map on the display 23, and the like.
- the in-vehicle navigation 3 is a known navigation device that is mounted on a vehicle and outputs various types of guidance to the driver of the vehicle.
- the in-vehicle navigation 3 is connected to an ECU (Engine Control Unit) 4 of the vehicle. It is a device connected by wire so as to be able to communicate in an area network or the like.
- the in-vehicle navigation 3 includes a speaker 31, a touch panel 32, a display 33, a current position detection unit 34, a communication unit 35, a control unit 36, and a data recording unit 37.
- the speaker 31, the touch panel 32, the display 33, and the data recording unit 37 can be configured in the same manner as those of the mobile terminal 2, and detailed description thereof will be omitted.
- the data recording unit 37a includes a map DB 37a as with the data recording unit 27 of the portable terminal.
- the current position detection unit 34 is a vehicle position detection unit that detects the current position of the in-vehicle navigation 3 (the vehicle position described above).
- the current position detection unit 34 includes at least one of a GPS, a geomagnetic sensor, a distance sensor, and a gyro sensor (all of which are not shown), and the current position (coordinates) and direction of the in-vehicle navigation 3 are known. Detect by method. Then, the current position detection unit 34 detects the current position of the in-vehicle navigation 3 based on the current position (coordinates) and direction of the in-vehicle navigation 3 detected as described above by a known matching method.
- the current position detection unit 34 selects a road having a position and direction closest to the detected position (coordinates) and direction of the current in-vehicle navigation 3 among the roads specified by the map information stored in the map DB 27a.
- the position closest to the detected current position (coordinates) of the in-vehicle navigation 3 is detected as the current position of the in-vehicle navigation 3 among the specified positions on the road.
- the current position detection unit 34 of the in-vehicle navigation 3 is different from the current position detection unit 24 of the portable terminal 2 in that the current position is detected only by wireless communication technology such as GPS, unlike a distance sensor or a gyro sensor.
- step B3 SB3 of the own position information acquisition process described later, the vehicle position detected by the current position detection unit 34 is acquired instead of the terminal position, and the acquired vehicle position is described later.
- the communication unit 35 is vehicle-side communication means that performs communication with the portable terminal 2 via a network.
- a network a network that uses Bluetooth.
- the control unit 36 is a control unit that controls the in-vehicle navigation 3, specifically, a CPU, various programs that are interpreted and executed on the CPU (a basic control program such as an OS, and a specific function that is activated on the OS And an internal memory such as a RAM for storing the program and various data.
- the location information sharing program according to the present embodiment is substantially installed in the in-vehicle navigation 3 via an arbitrary recording medium or network, thereby substantially configuring each unit of the control unit 36.
- processing executed by the position information sharing system configured as described above will be described.
- the process that does not specify the control subject is assumed to be executed by the control unit 26 of the portable terminal 2 or the control unit 36 of the in-vehicle navigation 3, and the information acquisition source and acquisition route are determined. Unless otherwise specified, it is stored in advance in the data recording unit 27 of the portable terminal 2 and the data recording unit 37 of the in-vehicle navigation 3 in a known timing and a known method, or the touch panel 22 of the portable terminal 2 or the in-vehicle unit It is assumed that the input is made by the user or the like via the touch panel 32 of the navigation 3. Step is abbreviated as “S”.
- This authentication process is a process that is first executed by the portable terminals 2 of users who share location information, and is a process for synchronizing each portable terminal 2 so that it can communicate without security authentication. . Note that various known processes can be used as such an authentication process, and an example thereof will be described below.
- each user activates an application for sharing position information with the mobile terminal 2, whereby a password input screen is displayed on the display 23 of the mobile terminal 2.
- a password input screen is displayed on the display 23 of the mobile terminal 2.
- an authentication request signal including the password and an identification ID for uniquely identifying the mobile terminal 2 is transmitted to the center device 1.
- a password that has been determined in advance by consultation between users is used.
- the control unit (not shown) of the center apparatus 1 that has received the authentication request signal associates the password and the identification ID included in the authentication request signal with each other in the data recording unit (not shown) of the center apparatus 1. Record. Next, the control unit of the center device 1 determines whether or not the same password as the password is recorded in the data recording unit. If it is determined that the password is not recorded, the same password is stored in the data recording unit. Wait until it is recorded. When the same password is recorded in the data recording unit, that is, when the control unit of the center apparatus 1 receives an authentication request signal including the same password when another user inputs the same password.
- the control unit of the center device 1 records the password and the identification ID included in the authentication request signal in association with each other in the data recording unit of the center device 1 and records a plurality of information recorded in association with the same password.
- the identification ID is recorded as the identification ID of the mobile terminal 2 belonging to the same group.
- the control part of the center apparatus 1 attaches
- Each mobile terminal 2 determines that the authentication is completed when it receives an authentication completion signal including its own identification ID. When the authentication is completed as described above, the mobile terminals 2 can share position information with each other via the center device 1 without performing authentication processing thereafter. Even when there are three or more mobile terminals 2 that have transmitted authentication request signals including the same password, the authentication process can be executed in the same manner. This completes the authentication process.
- This destination setting process is a process for setting a common destination among users, and is started when one of the users is activated by a predetermined method after the authentication process is completed.
- a destination setting process various known processes can be used, and an example will be described below.
- the specific number of users is arbitrary, but in the following, it is assumed that the two users share each other's position information. Further, in the explanation of each of these processes, the explanation is given focusing on one of these users, and the user of the portable terminal 2 is required to be “self” and the user of the other portable terminal 2 is required to be “partner”. The description will be given accordingly.
- the vehicle on which the user is boarded will be referred to as “own vehicle”, and the vehicle on which the opponent boarded will be referred to as “other vehicle” as necessary.
- other vehicle when it is not necessary to distinguish these in particular, they are simply referred to as “vehicles”.
- a destination input screen is displayed on the display 23 of the portable terminal 2 of the user.
- the route guidance unit 26c searches for a guidance route from the current position of his / her portable terminal 2 to the destination, and the guidance route thus searched is the portable terminal 2. Displayed on the display 23.
- the current position used when the route guidance unit 26c searches for the guidance route in this way may be either the vehicle position or the terminal position described above. This point will be described later.
- the time required from the current position of the mobile terminal 2 to the destination calculated by the control unit 26 of the mobile terminal 2 is calculated by a known method, The calculated required time may be displayed on the display 23 of his / her mobile terminal 2.
- a destination setting signal including the destination input in this way is transmitted to the partner's authenticated portable terminal 2 by a known method. That is, the information specifying the destination input in this way (for example, the coordinates of the destination) is transmitted to the center device 1 together with the identification ID of its own mobile terminal 2.
- the control unit of the center device 1 identifies the identification ID of the counterpart portable terminal 2 belonging to the same group, and together with the identified identification ID of the counterpart portable terminal 2, the received destination Send identifying information.
- the destination specified by this information is It is displayed on the display 23 as a common destination.
- a guide route from the current position of the partner mobile terminal 2 to the destination is displayed on the display 23 of the partner mobile terminal 2.
- the mobile terminals 2 belonging to the same group can share a common destination. This completes the destination setting process.
- the method of transmitting / receiving positional information via the center apparatus 1 using the identification ID in this way is the same in each process described later.
- This guidance process is generally a process for each user to share position information by displaying the synchronized position information of a plurality of users on the display 23 of each portable terminal 2.
- FIG. 2 is a flowchart of the guidance process. As shown in FIG. 2, first, the control unit 26 of the portable terminal 2 of the user executes a position information acquisition process (SA1).
- SA1 position information acquisition process
- FIG. 3 is a flowchart of the own position information acquisition process.
- This process is a process for acquiring one's own position (hereinafter, the self position).
- the communication feasibility determining unit 26a of the own mobile terminal 2 determines whether or not the own mobile terminal 2 can communicate with the in-vehicle navigation 3 (SB1).
- SB1 the in-vehicle navigation 3
- a specific method for determining whether or not communication is possible is arbitrary. For example, whether or not the Bluetooth connection between the communication unit 25 of the mobile terminal 2 and the communication unit 35 of the in-vehicle navigation 3 is established. You may determine based on.
- the in-vehicle navigation 3 broadcasts a search signal by Bluetooth. Then, by boarding the vehicle while owning the mobile terminal 2, the mobile terminal 2 is present in the short-range wireless communication range of the in-vehicle navigation 3 (usually within 10 m from the in-vehicle navigation 3). Thus, the mobile terminal 2 of its own receives the search signal from the in-vehicle navigation 3 and transmits a connection establishment signal for establishing connection by short-range wireless communication to the in-vehicle navigation 3.
- the in-vehicle navigation 3 that has received the connection establishment signal transmits a PIN code request signal to its own mobile terminal 2, and the mobile terminal 2 that has received the PIN code request signal receives the PIN code request signal.
- the PIN code input screen is displayed on the display 23 of No. 2 to prompt the input of the PIN code.
- the mobile terminal 2 inputs the PIN code
- the mobile terminal 2 transmits a PIN code signal
- the in-vehicle navigation 3 receives the PIN code
- the PIN code and the PIN code recorded in advance in the in-vehicle navigation 3 If they match, Bluetooth connection with the mobile terminal 2 is established.
- the communication feasibility determination unit 26a determines whether or not the Bluetooth connection between the communication unit 25 of the mobile terminal 2 and the communication unit 35 of the in-vehicle navigation 3 is established in this way.
- the communication unit 25 of the mobile terminal 2 can acquire the vehicle position by communication with the communication unit 35 of the in-vehicle navigation 3. Therefore, it abandons the acquisition of the vehicle position and acquires the terminal position detected by the current position detection unit 24 of its own mobile terminal 2 (SB4).
- the accuracy determination unit 26b determines whether the accuracy of the vehicle position satisfies the reference accuracy (SB2). Specifically, first, the control unit 36 of the in-vehicle navigation 3 transmits a signal including the accuracy of the vehicle position recorded in the data recording unit 37 of the in-vehicle navigation 3 to the portable terminal 2. Then, the accuracy determination unit 26b of the mobile terminal 2 compares the accuracy of the vehicle position included in the received signal with the reference accuracy recorded in the data recording unit 27 of the mobile terminal 2, and the accuracy of the vehicle position is the reference accuracy. It is determined whether or not
- the vehicle position is acquired. Instead, the terminal position detected by the current position detection unit 24 of the mobile terminal 2 is acquired (SB4).
- the vehicle position is determined to be closer to the actual current position than the terminal position, and the vehicle current position is detected.
- the vehicle position detected by the unit 34 is acquired via the communication unit 25 (SB3).
- the control unit 26 of his / her portable terminal 2 transmits the position information to the center device 1 via the communication unit 25 of his / her portable terminal 2 (SA2).
- This “own position information” is information related to the own position, and in the present embodiment, is configured as either the vehicle position acquired in SB3 or the terminal position acquired in SB4.
- the center apparatus 1 which received this self-position information transmits the said self-position information to the counterpart portable terminal 2 authenticated in the above-described authentication processing.
- the method for transmitting the position information to the partner mobile terminal 2 is arbitrary, and a known method can be used.
- the center device 1 uses the partner mobile terminal 2 for the position information.
- the other party's mobile terminal 2 that has received the signal is compared, and the identification ID included in the signal is compared with its own identification ID. If these match, they are included in the signal. You may acquire your own location information.
- the control unit 26 of its own mobile terminal 2 receives the partner position information from the center device 1 (SA3).
- This “partner position information” is position information related to the position of the partner, and in this embodiment, the vehicle position acquired by the current position acquisition unit of the partner in-vehicle navigation 3 or the current position of the partner mobile terminal 2. It is configured as one of the terminal positions acquired by the position acquisition unit.
- the method by which the other party acquires the vehicle position or the terminal position is arbitrary, in the present embodiment, it is assumed that the other mobile terminal 2 acquires the vehicle position or the terminal position by the same process as the above-described own position information acquisition process. To do.
- the specific method by which the control unit 26 of the mobile terminal 2 receives the partner position information from the center device 1 is arbitrary, and a known method can be used.
- the center device 1 A signal with the identification ID of the mobile terminal 2 attached to the partner position information is transmitted, and the mobile terminal 2 receiving the signal compares the identification ID included in the signal with its own identification ID. If they match, the position information included in the signal may be acquired.
- the control unit 26 of the own mobile terminal 2 determines the current position and the current position of the other party to the mobile terminal. 2 is displayed on the display 23 (SA4).
- the route searching unit 26c of the mobile terminal 2 of the user owns the guide route from the current position of the mobile terminal 2 to the destination acquired by the destination setting process and the destination acquired by the destination setting process from the current position of the partner.
- Each arriving guide route is searched by a known route search method (for example, Dijkstra method).
- a known route search method for example, Dijkstra method
- the route search unit 26c searches the route from the acquired vehicle position to the destination and acquires the terminal position. If it is (SB4), the route search unit 26c searches for a route from the acquired terminal position to the destination.
- SB3 when a vehicle position with higher accuracy than the terminal position is acquired, a more accurate guide route based on the current position is searched by searching for a guide route from the vehicle position to the destination. Is possible.
- the guide route from the current position of the opponent to the destination if the current position of the opponent is the vehicle position, a more accurate search can be made by searching for the guide route from the vehicle position to the destination. It is possible to search for a guidance route based on the current position.
- the control unit 26 of his / her mobile terminal 2 displays an icon 40 indicating his current position, an icon 41 indicating the other party's current position, An icon 42 indicating the above and a guide route 43 are displayed.
- the current position of one's own or the other party's mobile terminal 2 that acquired the vehicle position in SB3 of the own position information acquisition process shown in FIG. An icon 40 indicating the current position of the other party is displayed, and the current position of the portable terminal 2 that acquired the terminal position in SB4 of the own position information acquisition process is an icon indicating the current position according to the second mode. 40 or an icon 41 indicating the partner's current position is displayed.
- the “first aspect” is an aspect indicating that the mobile terminal 2 has acquired the vehicle position, and a specific aspect thereof is arbitrary.
- the icon 40 is Although it is displayed on the map of the display 23 as a round icon, it may be displayed as an automobile type icon.
- the “second aspect” is an aspect indicating that the mobile terminal 2 has acquired the terminal position, and the specific aspect is as long as the aspect is different from the first aspect described above.
- the icon 41 is displayed on the map of the display 23 as a star icon, but may be displayed as a human icon.
- the person who has visually recognized the display has the current position of the opponent.
- Sense of whether it is highly accurate based on the detection of the current position detection means of the in-vehicle navigation 3 or less accurate than the in-vehicle navigation 3 based on the detection of the current position detection means of the mobile terminal 2 It is possible to grasp it. Further, for example, when the user gets out of the vehicle with his / her own mobile terminal 2 and moves to a position where the mobile terminal 2 and the in-vehicle navigation 3 cannot be connected via Bluetooth, Cannot acquire the vehicle position (SB1, No in FIG. 3), and acquires the terminal position (SB4 in FIG. 3). Therefore, since the present position is displayed on the display 23 according to the second mode, the opponent recognizes that he / she may be away from the vehicle by viewing the display 23. It is possible. Thus, the control unit 26 of the own mobile terminal 2 ends the guidance process.
- the current position detection unit 34 of the in-vehicle navigation 3 detects the communication. Since the vehicle position is shared with other mobile terminals 2, it is possible to use the detection result by the current position detection unit 34 with higher detection accuracy than the current position detection unit 24 of the mobile terminal 2 for sharing the position. Can share more accurate positions of each other.
- the output mode is different between the case of sharing the vehicle position and the case of sharing the terminal position, whether the user shares the vehicle position based on the output mode, or Since it is possible to easily grasp whether the terminal location is shared, it is possible to easily grasp the fact when the user of each mobile terminal 2 connected via communication is in a car. In addition, it is possible to easily grasp whether or not the position information of the other user is a highly accurate detection position detected by the vehicle position detection means.
- the route search unit 26c uses the vehicle position detected by the current position detection unit 34 of the in-vehicle navigation 3. Since the route to the destination is searched, it is possible to perform route guidance using the detection result by the current position detection unit 34 of the in-vehicle navigation 3 with higher detection accuracy than the current position detection unit 24 of the mobile terminal 2. Thus, it is possible to search for a guide route based on a more accurate current position.
- the problems to be solved by the invention and the effects of the invention are not limited to the above contents, and may vary depending on the implementation environment and details of the configuration of the invention. May be solved, or only some of the effects described above may be achieved. For example, even if each user cannot share a more accurate position with each other, if the user can share a slightly more accurate position than before, or if the position is as accurate as before, When it can be shared by a technique different from the conventional technique, the problem of the present invention is solved.
- each of the electrical components described above is functionally conceptual and does not necessarily need to be physically configured as illustrated.
- the specific form of distribution and integration of each part is not limited to the one shown in the figure, and all or a part thereof may be functionally or physically distributed or integrated in arbitrary units according to various loads or usage conditions. Can be configured.
- each component of the position information sharing system may be distributed and connected to each other via a network.
- the position information sharing system has been described as being configured to include the center device 1, the mobile terminal 2, and the in-vehicle navigation 3, but the mobile terminal 2 and the in-vehicle navigation 3 are not limited to one, and a plurality of It may be.
- the route search unit 26c provided in the mobile terminal 2 has been described as searching for a guide route from the current position of the user or the current position of the opponent to the destination.
- the route search unit 26 c may be provided in the center device 1. Specifically, the mobile terminal 2 transmits its current position and the position coordinates of the destination to the center apparatus 1, and the route search unit of the center apparatus that has received these position coordinates receives the target position from the current position. A guide route to the ground may be searched, and information on the guide route searched in this way may be transmitted to the mobile terminal 2 by a known method.
- the display mode of the current position is different between when the vehicle position is acquired and when the terminal position is acquired, but these display modes may be the same.
- the voice mode may be different between the first mode and the second mode. For example, an electronic voice that indicates which of the vehicle position and the terminal position is acquired may be output.
- the reference accuracy is described as being the degree of confidence “B” in any case, but the reference accuracy may be a value that can change according to the environment.
- the accuracy of the terminal position detected by the current position detection unit 24 of the mobile terminal 2 may be used as the reference accuracy.
- the control unit 26 of the mobile terminal 2 uses a method similar to the above-described method of acquiring the accuracy of the vehicle position. The position accuracy is acquired and recorded in the data recording unit 27 of the portable terminal 2.
- the accuracy determination unit 26b compares the accuracy of the terminal position recorded in the data recording unit 27 in this way with the accuracy of the vehicle position acquired from the in-vehicle navigation 3, so that the vehicle position satisfies the reference accuracy. It may be determined whether or not. According to such a method, since the position information is shared by using the more accurate one of the vehicle position and the terminal position, each user can share the more accurate position of each other. Alternatively, when it is known that the accuracy of the vehicle position is always higher than the accuracy of the terminal position, the comparison with the reference accuracy is omitted, and when the vehicle position can be obtained, the vehicle is always You may make it use a position as an own position and an other party position.
- the position information sharing system includes a vehicle position detection unit that is mounted on a vehicle and detects a vehicle position that is a current position of the vehicle based on information directly acquired from the vehicle; Vehicle-side communication means that is mounted on the vehicle and performs communication; terminal position detection means that is mounted on a mobile terminal and that detects the terminal position that is the current position of the mobile terminal by GPS; and that is mounted on the mobile terminal and that is A terminal-side communication unit that communicates with the vehicle-side communication unit; and a communication availability determination unit that determines whether communication between the vehicle-side communication unit and the terminal-side communication unit is possible.
- the terminal-side communication means is the vehicle-side communication means.
- the vehicle position of the mounted vehicle is acquired from the vehicle position detection unit via the vehicle-side communication unit, and the acquired vehicle position is transmitted to another portable terminal as the user position of the portable terminal.
- the terminal-side communication means is a mobile terminal equipped with the terminal-side communication means. The terminal position is acquired from the terminal position detection means, and the acquired terminal position is transmitted to another mobile terminal as the user position of the mobile terminal.
- the vehicle position detected by the vehicle position detection means mounted on the vehicle It is possible to use the detection result by the vehicle position detection means with higher detection accuracy than the terminal position detection means for sharing the position, and each user shares a more accurate position with each other. Is possible.
- the position information sharing system in the position information sharing system according to another aspect 2 of the embodiment, it is determined whether or not the accuracy of the vehicle position detected by the vehicle position detection unit satisfies a reference accuracy.
- the terminal position of the mobile terminal on which the communication means is mounted is acquired from the terminal position detection means, and the acquired terminal position is transmitted to another mobile terminal as the user position of the mobile terminal.
- the position information sharing system when the vehicle position accuracy detected by the vehicle position detection unit does not satisfy the reference accuracy, communication between the vehicle side communication unit and the terminal side communication unit is performed. Since the terminal position is shared even if possible, if the detection accuracy by the vehicle position detection means is low for some reason, the terminal position detection is performed without sharing the vehicle position detected by the vehicle position detection means. It becomes possible to share the terminal position detected by the means, and it is possible to prevent the position accuracy from being deteriorated by using the detection result by the vehicle position detecting means for sharing the position.
- the positional information sharing system transmits the vehicle position as the user position of the portable terminal to the other portable terminal in the positional information sharing system according to the aspect 1 or 2
- the mobile terminal or the other mobile terminal When the mobile terminal or the other mobile terminal outputs the vehicle position according to the first aspect and transmits the terminal position as the user position of the mobile terminal to the other mobile terminal, the terminal position is The portable terminal or the other portable terminal outputs in a second mode different from the first mode.
- the user determines whether each portable terminal is based on the output mode. Since it is possible to easily grasp whether the vehicle position is shared or the terminal position is shared, it is easy when the user of each communication-connected mobile terminal is in the car In addition, it is possible to grasp the fact, and it is possible to easily grasp whether or not the position information of the other user is a highly accurate detection position detected by the vehicle position detection means.
- the positional information sharing system is the positional information sharing system according to any one of the above aspects 1 to 3, wherein the mobile terminal accepts setting of a destination for route guidance from a user.
- a route search means for searching for a guide route based on the destination, and the communication availability determination means enables communication between the vehicle-side communication means and the terminal-side communication means.
- the route search means searches for a guide route from the vehicle position detected by the vehicle position detection means of the vehicle on which the vehicle-side communication means is mounted to the destination received from the user,
- the route search unit Searching for a guidance route from said detected terminal position in said terminal position detecting means of the mobile terminal has signal means is mounted to the destination received from the user.
- the route search means detects the vehicle position detection means mounted on the vehicle when communication between the vehicle side communication means and the terminal side communication means is possible. Since the route from the vehicle position to the destination is searched, it is possible to perform route guidance using the detection result by the vehicle position detection means with higher detection accuracy than the terminal position detection means, and the more accurate current position It is possible to search for a guidance route based on the.
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Abstract
Description
まず、実施の形態の基本的概念を説明する。実施の形態は、概略的に、複数の携帯端末のユーザが互いの位置情報(以下、ユーザ位置)を共有することを可能とする、位置情報共有システム、位置情報共有方法、及び位置情報共有プログラムに関する。
次に、実施の形態の具体的内容について説明する。
以下、本発明に係る位置情報共有システム、位置情報共有方法、及び位置情報共有プログラムの実施の形態について図面を参照しつつ詳細に説明する。ただし、この実施の形態によって本発明が限定されるものではない。
本実施の形態では、センター装置1と、スマートフォンの如き携帯端末2と、車載用ナビゲーション装置(以下、車載ナビ)3と、に位置情報共有プログラムをインストールすることにより、これらセンター装置1、携帯端末2、及び、車載ナビ3が位置情報共有システムとして機能する場合について説明する。ただし、携帯端末2は、スマートフォン以外にも、ナビゲーション専用の携帯端末2であってもよい。あるいは、車載ナビ3についても、車両に固定的に設置されたナビに限られず、通常の位置検出環境下において携帯端末2よりも検出した位置の精度が高い装置であれば、車両に着脱可能に設置されるナビであってもよい。また、位置情報共有システムにおけるセンター装置1、携帯端末2、及び車載ナビ3としての機能については、公知のセンター装置、携帯端末、及び車載ナビと同様の構成により得ることができるので、その説明は省略することとし、特に位置情報を共有する機能を達成するための構成について説明する。
最初に、携帯端末2の構成を説明する。図1に示すように、携帯端末2は、スピーカ21、タッチパネル22、ディスプレイ23、現在位置検出部24、通信部25、制御部26、及びデータ記録部27を備えている。
スピーカ21は、制御部26の制御に基づいて情報を音声にて出力する音声出力手段であり、特に、車載ナビ3に備えられた経路探索部(図示省略)により探索された経路を案内する案内手段である。スピーカ21から出力される音声の具体的な態様は任意であり、必要に応じて生成された合成音声や、予め録音された音声を出力することができる。
タッチパネル22は、ユーザの指等で押圧されることにより、当該ユーザから各種手動入力を受け付けるものである。このタッチパネル22は、透明又は半透明状に形成され、ディスプレイ23の前面において当該ディスプレイ23の表示面と重畳するように設けられている。このタッチパネル22としては、例えば抵抗膜方式や静電容量方式等による操作位置検出手段を備えた公知のタッチパネルを使用することができる。
ディスプレイ23は、収集情報通信システムによって案内された画像を表示する表示手段であり、特に、地図DB27aにて格納された地図情報に基づいて地図を表示する表示手段である。このディスプレイ23の具体的な構成は任意であり、公知の液晶ディスプレイや有機ELディスプレイの如きフラットパネルディスプレイを使用することができる。
現在位置検出部24は、携帯端末2の現在位置を検出する端末位置検出手段である。例えば、現在位置検出部24は、GPS、地磁気センサ、距離センサ、又はジャイロセンサ(いずれも図示省略)の少なくとも一つを備え、現在の携帯端末2の位置(座標)及び方位等を、公知の方法にて検出する。なお、本実施の形態では、現在位置検出部24はGPSにより現在位置を検出するためのものである事として説明する。なお、この携帯端末2の現在位置検出部24により検出した現在位置を以下では、必要に応じて「端末位置」と称して説明し、後述する車載ナビ3の現在位置検出部34により検出した現在位置を以下では、必要に応じて「車両位置」と称して説明する。
通信部25は、センター装置1との間、あるいは、後述する車載ナビ3の通信部35との間でネットワークを介した通信を行う端末側通信手段である。ネットワークの具体的な種類や構成は任意であるが、例えば、公知の移動体通信網を介して通信を行う移動体無線通信手段や、FM多重放送やビーコンを介した公知のVICS(登録商標)システム用の無線通信手段を用いることができる。また、センター装置1との間で通信を行う通信手段と、車載ナビ3との間で通信を行う通信手段とを異なる通信手段として構成しても良い。なお、本実施の形態においては、通信部25は、センター装置1との間で通信を行う移動体無線通信手段と、車載ナビ3のとの間で通信を行う公知のBluetooth(登録商標)を利用した無線通信手段の2つの通信手段として構成される。
制御部26は、携帯端末2を制御する制御手段であり、具体的には、CPU、当該CPU上で解釈実行される各種のプログラム(OSなどの基本制御プログラムや、OS上で起動され特定機能を実現するアプリケーションプログラムを含む)、及びプログラムや各種のデータを格納するためのRAMの如き内部メモリを備えて構成されるコンピュータである。特に、本実施の形態に係る位置情報共有プログラムは、任意の記録媒体又はネットワークを介して携帯端末2にインストールされることで、制御部26の各部を実質的に構成する。
データ記録部27は、位置情報共有システムの動作に必要なプログラム及び各種のデータを記録する記録手段であり、例えば、外部記録装置としてのハードディスク(図示省略)を用いて構成されている。ただし、ハードディスクに代えてあるいはハードディスクと共に、磁気ディスクの如き磁気的記録媒体、又はDVDやブルーレイディスクの如き光学的記録媒体を含む、その他の任意の記録媒体を用いることができる。
次に、車載ナビ3の構成を説明する。この車載ナビ3は、車両に搭載されて車両の運転者に対して各種の案内を出力するための公知のナビゲーション装置であり、例えば、車両のECU(Engine Control Unit)4に対してCAN(Controller Area Network)等にて通信可能に有線接続された装置である。そして、図1に示すように、車載ナビ3は、スピーカ31、タッチパネル32、ディスプレイ33、現在位置検出部34、通信部35、制御部36、及び、データ記録部37を備えている。なお、このうち、スピーカ31、タッチパネル32、ディスプレイ33、及び、データ記録部37については、それぞれ、携帯端末2のそれらと同様に構成することが可能であるため、詳細な説明を省略する。なお、データ記録部37aは、携帯端末のデータ記録部27と同様に地図DB37aを含む。
現在位置検出部34は、車載ナビ3の現在位置(上述した車両位置)を検出する車両位置検出手段である。例えば、現在位置検出部34は、GPS、地磁気センサ、距離センサ、又はジャイロセンサ(いずれも図示省略)の少なくとも一つを備え、現在の車載ナビ3の位置(座標)及び方位等を、公知の方法にて検出する。そして、現在位置検出部34は、このように検出した現在の車載ナビ3の位置(座標)及び方位等に基づいて、車載ナビ3の現在位置を公知のマッチング方法により検出する。例えば、現在位置検出部34は、地図DB27aに格納された地図情報によって特定される道路の中で、当該検出した現在の車載ナビ3の位置(座標)及び方位に最も近い位置及び方位の道路を特定し、当該特定した道路上の位置の中で、当該検出した現在の車載ナビ3の位置(座標)に最も近い位置を、車載ナビ3の現在位置として検出する。なお、この車載ナビ3の現在位置検出部34は、携帯端末2の現在位置検出部24のように、GPS等の無線通信技術のみにより現在位置を検出するものとは異なり、距離センサやジャイロセンサなど、車両から直接取得される各種情報に基づいて現在位置を検出する検出手段であるため、通常の位置検出環境下においては、携帯端末2の現在位置検出部24よりも高い精度をもって位置情報の検出を行うことが可能である。このため、例えば、後述する自分位置情報取得処理のステップB3(SB3)において、端末位置ではなく現在位置検出部34にて検出された車両位置を取得し、当該取得した車両位置を後述する自分位置として利用することで、各ユーザが互いの一層正確な位置を共有することが可能になる。
通信部35は、携帯端末2との間でネットワークを介した通信を行う車両側通信手段である。ネットワークの具体的な種類や構成は任意であるが、本実施の形態では、公知のBluetoothを利用した無線通信手段として構成される。
制御部36は、車載ナビ3を制御する制御手段であり、具体的には、CPU、当該CPU上で解釈実行される各種のプログラム(OSなどの基本制御プログラムや、OS上で起動され特定機能を実現するアプリケーションプログラムを含む)、及びプログラムや各種のデータを格納するためのRAMの如き内部メモリを備えて構成されるコンピュータである。特に、本実施の形態に係る位置情報共有プログラムは、任意の記録媒体又はネットワークを介して車載ナビ3にインストールされることで、制御部36の各部を実質的に構成する。
次に、このように構成される位置情報共有システムによって実行される処理について説明する。なお、以下の各処理の説明において、制御主体を特記しない処理については、携帯端末2の制御部26や車載ナビ3の制御部36にて実行されるものとし、情報の取得元や取得経路を特記しない場合については、公知のタイミング及び公知の方法にて、携帯端末2のデータ記録部27や車載ナビ3のデータ記録部37に予め格納されており、あるいは、携帯端末2のタッチパネル22や車載ナビ3のタッチパネル32を介してユーザ等によって入力されるものとする。また、ステップを「S」と略記する。
まずは、認証処理について説明する。この認証処理は、位置情報の共有を図るユーザ同士の携帯端末2によって初めに実行される処理であって、各携帯端末2をセキュリティ認証無しに通信可能となるように同期するための処理である。なお、このような認証処理としては、様々な公知の処理を用いることが可能であるが、以下ではその一例を説明する。
次に、目的地設定処理について説明する。この目的地設定処理は、ユーザ同士で共通の目的地を設定するための処理であり、認証処理が終了した後、いずれかのユーザが所定方法で起動することにより開始される。なお、このような目的地設定処理としては、様々な公知の処理を用いることが可能であるが、以下ではその一例を説明する。この目的地設定処理及び後述する案内処理において、複数のユーザの具体的な人数は任意であるが、以下では、2人のユーザが互いの位置情報の共有を図るものとする。また、これら各処理の説明では、これらのユーザのうち一方のユーザに着目して説明を行い、この携帯端末2のユーザを「自分」、他方の携帯端末2のユーザを「相手」と必要に応じて称して説明する。また、自分が搭乗する車両を「自車両」、相手が搭乗する車両を「他車両」と必要に応じて称して説明する。なお、これらを特に区別する必要のないときは、単に「車両」と称して説明する。
次に、このように構成される位置情報共有システムによって実行される案内処理について説明する。この案内処理は、概略的に、同期された複数のユーザの位置情報を各携帯端末2のディスプレイ23に表示することにより、各ユーザが位置情報を共有するための処理である。
ここで、図3は、自分位置情報取得処理のフローチャートである。この処理は、自分の位置(以下、自分位置)を取得するための処理である。この図3に示すように、まず、自分の携帯端末2の通信可否判定部26aは、自分の携帯端末2が車載ナビ3と通信可能か否かの判定を行う(SB1)。この通信可能か否かの判定を行う具体的な方法は任意であるが、例えば、自分の携帯端末2の通信部25と車載ナビ3の通信部35とのBluetooth接続が確立されているか否かに基づいて判定しても良い。
このように本実施の形態によれば、車載ナビ3の通信部35と携帯端末2の通信部25との相互間における通信が可能な場合は、車載ナビ3の現在位置検出部34により検出した車両位置を他の携帯端末2と共有するので、携帯端末2の現在位置検出部24よりもより検出精度の高い現在位置検出部34による検出結果を位置の共有に用いることが可能となり、各ユーザが互いの一層正確な位置を共有することが可能となる。
以上、本発明に係る実施の形態について説明したが、各発明の具体的な構成及び手段は、特許請求の範囲に記載した各発明の技術的思想の範囲内において、任意に改変及び改良することができる。以下、このような変形例について説明する。
まず、発明が解決しようとする課題や発明の効果は、上述の内容に限定されるものではなく、発明の実施環境や構成の細部に応じて異なる可能性があり、上述した課題の一部のみを解決したり、上述した効果の一部のみを奏することがある。例えば、各ユーザが互いの一層正確な位置を共有することができない場合であっても、従来より僅かに正確な位置を共有することが出来ている場合や、従来と同程度に正確な位置を従来とは異なる技術により共有することができている場合には、本願発明の課題が解決されている。
また、上述した各電気的構成要素は機能概念的なものであり、必ずしも物理的に図示の如く構成されていることを要しない。すなわち、各部の分散や統合の具体的形態は図示のものに限られず、その全部または一部を、各種の負荷や使用状況などに応じて、任意の単位で機能的または物理的に分散や統合して構成できる。例えば、位置情報共有システムの各構成要素を、分散配置した上でネットワークを介して相互に接続してもよい。また、位置情報共有システムは、センター装置1、携帯端末2、及び車載ナビ3を備えて構成されるものとして説明したが、携帯端末2や車載ナビ3は、1台に限定されず、複数台であってもよい。
本実施の形態では、携帯端末2に設けられた経路探索部26cが、自分の現在位置や相手の現在位置から目的地に至る案内経路を探索するものとして説明したが、このような構成に限られず、経路探索部26cはセンター装置1に設けられていても良い。具体的には、携帯端末2は、自分の現在位置及び目的地の位置座標をセンター装置1に対して送信し、これらの位置座標を受信したセンター装置の経路探索部は、当該現在位置から目的地に至る案内経路を探索し、このようにして探索された案内経路に関する情報を携帯端末2に対して公知の方法により送信しても良い。
本実施の形態では、車両位置を取得している場合と、端末位置を取得している場合とで、現在位置の表示態様を異なるものとしたが、これらの表示態様を同一のものとしても良い。また、第一の態様と第二の態様とで音声の態様を相違させても良く、例えば、車両位置と端末位置とのいずれを取得しているかを示唆する電子音声を出力しても良い。
本実施の形態では、基準精度はいかなる場合であっても自信度「B」であるものとして説明したが、基準精度は環境に応じて変化しうる値としても良い。例えば、携帯端末2の現在位置検出部24にて検出された端末位置の精度を基準精度としても良い。具体的には、携帯端末2の現在位置検出部24が端末位置を取得する度に、携帯端末2の制御部26が、上述した車両位置の精度を取得する方法と同様の方法を用いて端末位置の精度を取得し、携帯端末2のデータ記録部27に記録する。そして、精度判定部26bは、このようにしてデータ記録部27に記録された端末位置の精度と、車載ナビ3から取得した車両位置の精度とを比較することにより、車両位置が基準精度を満たしているか否かを判定してもよい。このような方法によれば、車両位置と端末位置とのうち精度の高い方を用いて位置情報を共有するので、各ユーザが互いの一層正確な位置を共有することが可能となる。あるいは、車両位置の精度の方が端末位置の精度より常に高いことが分かっている等の場合には、基準精度との比較を省略し、車両位置が取得可能な場合には、常に、当該車両位置を自分位置や相手位置として使用するようにしてもよい。
最後に、これまでに説明した実施の形態の特徴と効果の一部を、以下に例示する。ただし、実施の形態の特徴と効果は、以下の内容に限定されず、以下の特徴の一部のみを具備することによって以下の効果の一部のみを奏する場合や、以下の特徴以外の他の特徴を具備することによって以下の効果以外の他の効果を奏する場合がある。
2 携帯端末
3 車載ナビ
4 ECU
21、31 スピーカ
22、32 タッチパネル
23、33 ディスプレイ
24、34 現在位置検出部
25、35 通信部
26、36 制御部
26a 通信可否判定部
26b 精度判定部
26c 経路探索部
27、37 データ記録部
27a、37a 地図DB
40 自分の現在位置を示すアイコン
41 相手の現在位置を示すアイコン
42 目的地を示すアイコン
43 案内経路
Claims (6)
- 車両に搭載されて当該車両の現在位置である車両位置を当該車両から直接取得される情報に基づいて検出する車両位置検出手段と、
前記車両に搭載されて通信を行う車両側通信手段と、
携帯端末に搭載されて当該携帯端末の現在位置である端末位置をGPSにより検出する端末位置検出手段と、
前記携帯端末に搭載されて前記車両側通信手段との通信を行う端末側通信手段と、
前記車両側通信手段と前記端末側通信手段との相互間における通信が可能であるか否かを判定する通信可否判定手段と、を備え、
前記通信可否判定手段にて前記車両側通信手段と前記端末側通信手段との相互間における通信が可能であると判定された場合、当該端末側通信手段は、当該車両側通信手段が搭載された車両の前記車両位置を前記車両位置検出手段から当該車両側通信手段を介して取得し、当該取得した車両位置を当該携帯端末のユーザ位置として他の携帯端末に送信し、
前記通信可否判定手段にて前記車両側通信手段と前記端末側通信手段との相互間における通信が可能ではないと判定された場合、当該端末側通信手段は、当該端末側通信手段が搭載された携帯端末の前記端末位置を前記端末位置検出手段から取得し、当該取得した端末位置を当該携帯端末の前記ユーザ位置として他の携帯端末に送信する、
位置情報共有システム。 - 前記車両位置検出手段により検出された前記車両位置の精度が基準精度を満たすか否かを判定する精度判定手段を備え、
前記精度判定手段にて前記車両位置の精度が基準精度を満たさないと判定された場合には、前記通信可否判定手段にて前記車両側通信手段と前記端末側通信手段との相互間における通信が可能であると判定された場合であっても、前記車両側通信手段との相互間における通信が可能であると判定された前記端末側通信手段は、当該端末側通信手段が搭載された携帯端末の前記端末位置を前記端末位置検出手段から取得し、当該取得した端末位置を当該携帯端末の前記ユーザ位置として他の携帯端末に送信する、
請求項1に記載の位置情報共有システム。 - 前記車両位置を前記携帯端末のユーザ位置として前記他の携帯端末に送信する場合、当該車両位置を、当該携帯端末又は当該他の携帯端末は第一の態様により出力し、
前記端末位置を前記携帯端末のユーザ位置として前記他の携帯端末に送信する場合、当該端末位置を、当該携帯端末又は当該他の携帯端末は前記第一の態様とは異なる第二の態様により出力する、
請求項1又は2に記載の位置情報共有システム。 - 前記携帯端末が経路案内の目的地の設定をユーザから受け付けた場合に、当該目的地に基づいて案内経路を探索する経路探索手段を備え、
前記通信可否判定手段にて前記車両側通信手段と前記端末側通信手段との相互間における通信が可能であると判定された場合、前記経路探索手段は、当該車両側通信手段が搭載された車両の前記車両位置検出手段にて検出された車両位置から前記ユーザから受け付けた目的地までの案内経路を探索し、
前記通信可否判定手段にて前記車両側通信手段と前記端末側通信手段との相互間における通信が可能ではないと判定された場合、前記経路探索手段は、当該端末側通信手段が搭載された携帯端末の前記端末位置検出手段にて検出された前記端末位置から前記ユーザから受け付けた目的地までの案内経路を探索する、
請求項1から3のいずれか一項に記載の位置情報共有システム。 - 車両に搭載されて通信を行う車両側通信手段と携帯端末に搭載されて通信を行う端末側通信手段との相互間における通信が可能であるか否かを判定する通信可否判定ステップと、
前記通信可否判定ステップにおいて前記車両側通信手段と前記端末側通信手段との相互間における通信が可能であると判定された場合、当該端末側通信手段は、当該車両側通信手段が搭載された車両に搭載された車両位置検出手段にて当該車両から直接取得される情報に基づいて検出された当該車両の現在位置である車両位置を、当該車両位置検出手段から前記車両側通信手段を介して取得し、当該取得した車両位置を当該携帯端末のユーザ位置として他の携帯端末に送信するステップと、
前記通信可否判定手段ステップにおいて前記車両側通信手段と前記端末側通信手段との相互間における通信が可能ではないと判定された場合、当該端末側通信手段は、当該端末側通信手段が搭載された携帯端末に搭載された端末位置検出手段にてGPSにより検出された当該携帯端末の現在位置である端末位置を、当該端末位置検出手段から取得し、当該取得した端末位置を当該携帯端末の前記ユーザ位置として他の携帯端末に送信するステップと、を含む、
位置情報共有方法。 - 請求項5に記載の方法をコンピュータに実行させるための位置情報共有プログラム。
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JP2016156724A (ja) * | 2015-02-25 | 2016-09-01 | 京セラ株式会社 | 携帯電子機器 |
US10506129B2 (en) | 2015-03-27 | 2019-12-10 | Brother Kogyo Kabushiki Kaisha | Communication apparatus |
US11159696B2 (en) | 2015-03-27 | 2021-10-26 | Brother Kogyo Kabushiki Kaisha | Communication apparatus |
US11711481B2 (en) | 2015-03-27 | 2023-07-25 | Brother Kogyo Kabushiki Kaisha | Communication apparatus |
JP2018105668A (ja) * | 2016-12-26 | 2018-07-05 | アイシン・エィ・ダブリュ株式会社 | 消費電力制御システム、ナビゲーションシステム、消費電力制御プログラムおよび制御プログラム |
JP2018105669A (ja) * | 2016-12-26 | 2018-07-05 | アイシン・エィ・ダブリュ株式会社 | 消費電力制御システム、ナビゲーションシステム、消費電力制御プログラムおよび制御プログラム |
WO2018225116A1 (ja) * | 2017-06-05 | 2018-12-13 | エヴィクサー株式会社 | ナビゲーションシステム |
JP2019024221A (ja) * | 2018-09-20 | 2019-02-14 | ブラザー工業株式会社 | 通信機器 |
WO2023020207A1 (zh) * | 2021-08-20 | 2023-02-23 | 腾讯科技(深圳)有限公司 | 车辆位置分享方法、系统、装置、设备、介质及程序产品 |
Also Published As
Publication number | Publication date |
---|---|
EP2960628A1 (en) | 2015-12-30 |
CN105164497A (zh) | 2015-12-16 |
US20160080914A1 (en) | 2016-03-17 |
JPWO2014208154A1 (ja) | 2017-02-23 |
EP2960628A4 (en) | 2016-04-20 |
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