JP6258077B2 - COMMUNICATION SYSTEM AND ELECTRONIC DEVICE, PAIRING METHOD, PAIRING PROGRAM - Google Patents

Description

  The present invention relates to a communication system for establishing a wireless connection between a first electronic device and a second electronic device that can be connected by a wireless communication protocol, and in particular, pairing for establishing a wireless connection between the electronic devices. It is about the method.

  Instead of wired connection, connection by wireless communication based on a predetermined communication protocol has become widespread for connection between computers or peripheral devices. A typical wireless communication protocol of this type is Bluetooth (registered trademark). In Bluetooth, a large number of connection profiles are defined for each connection service in order to realize wireless communication in various devices. Each Bluetooth-compatible device has one or more connection profiles that can be used, and devices having the same profile can communicate with each other. Typical profiles in Bluetooth include A2DP (Advanced Audio Distribution Profile) for transmitting audio sound to headphones (or earphones) with a receiver, and AVRCP (Audio / Video Remote Control Control) for realizing remote control functions of AV devices. ), DUN (Dial-up Networking Profile) for dial-up connection to the Internet, HFP (Hands-Free Profile) for controlling communication of voice data with synchronous packets in a hands-free call, and input devices such as a mouse and a keyboard HID (Human Interface Device Profile) e), etc. exist.

  For example, an in-vehicle device equipped with a Bluetooth module mounted on a vehicle and a portable terminal equipped with a Bluetooth module such as a smartphone are connected using wireless communication by this Bluetooth, and both the on-vehicle device and the portable terminal support A2DP. If this is the case, it is possible to establish communication using this A2DP and reproduce the audio data stored in the portable terminal on the vehicle-mounted device. Also, if both the vehicle-mounted device and the portable terminal support HFP, Communication is established and hands-free calling is possible on the vehicle-mounted device. Thus, recent vehicle-mounted devices can enhance various functions by connecting a smartphone by Bluetooth communication.

In order to enable communication between such two devices, it is necessary to perform an initial connection setting called pairing. By performing this pairing, it becomes possible to perform communication between the two Bluetooth devices. When pairing a mobile terminal, which is a Bluetooth compatible device, with the in-vehicle device as in the above example, the following pairing procedure is required.
1) Operate the mobile terminal to make it ready for pairing. By making this pairing enabled, the mobile terminal can be detected from another Bluetooth compatible device.
2) Operate the vehicle-mounted device, and start searching for nearby Bluetooth-compatible devices from a predetermined Bluetooth setting screen. By performing the search operation, another Bluetooth-compatible device existing in an area where the Bluetooth communication of the vehicle-mounted device can be searched.
3) A list of one or a plurality of other Bluetooth-compatible devices searched for is displayed on the display unit of the vehicle-mounted device. At this time, in the list, device names that are device names of other searched Bluetooth compatible devices are displayed as a list.
4) The user selects a portable terminal to be connected from the list by referring to the device name.
5) When selected, a passkey input request is transmitted from the vehicle-mounted device to the mobile terminal, and a passkey input screen is displayed on the display unit of the mobile terminal. This passkey input is necessary for security authentication to prevent abuse of the communication connection.
6) When a pass key is input, a known pairing sequence process is started between the selected portable terminal and the vehicle-mounted device to establish a connection.
7) If pairing is established, communication with the selected portable terminal is possible thereafter.
Once the above pairing is performed, the paired two devices register the Bluetooth module's individual number (Bluetooth Device Address; BDA) and device name, and then perform operations 1) to 7). Without any problem, a connection between these devices can be automatically established to enable communication.
Depending on the version of Bluetooth, the input of the pass key in step 5) is simplified, and the pairing sequence in step 6) is started by sharing the randomly generated pass key between devices. There are also.

  As described above, it is necessary to perform many operation procedures for pairing, and the user feels that the setting procedure is complicated and difficult to understand, and is difficult. Also, when a desired device is selected from the list displayed in step 3), if there are a large number of devices in the vicinity, it is very difficult to find a device to be connected from among them. When there is a device name with the same name, there is a problem that it is not known which one should be selected.

In relation to such a problem, based on the radio field strength of the signal from the slave device received by the master device, the closest device is identified, and based on this information, the device that realizes pairing is determined. The technique is disclosed in Patent Document 1.
Further, a technique is disclosed in which an inquiry signal is transmitted from a second electronic device, a first electronic device that first responds to the inquiry signal is identified, and a connection is started with the identified first electronic device. It is disclosed in Document 2.

JP 2008-205780 A JP 2011-182407 A

  However, Patent Document 1 and Patent Document 2 described above are technologies that facilitate the establishment of pairing with the closest device, and it is not always guaranteed that the devices that are to be paired are in the closest position, On the other hand, there is a case where a Bluetooth compatible device that the user does not want to pair is placed at the closest position of the master device. In such a case, pairing with the target Bluetooth compatible device cannot be easily realized. Even now, there are a wide variety of connection profiles defined by Bluetooth, and the number of compatible devices tends to increase. The probability that such a situation will occur is not necessarily low.

  Therefore, the present invention has been created in view of the above problems, and its purpose is to simplify the user's operation procedure during pairing and to reliably pair with a device desired by the user. An object is to provide a communication system and an electronic device, a pairing method, and a pairing program that can be performed.

  The communication system of the present invention is a communication system that establishes a wireless connection between a first electronic device and a second electronic device in accordance with a wireless communication protocol, and transmits and receives data. A second electronic device having transmission means for transmitting the name information of the first electronic device requested by the second electronic device, wherein the second electronic device searches for the name information; And connection establishment means for establishing a wireless connection with the first electronic device that has transmitted the name information when the information is retrieved.

  Furthermore, the first electronic device stores name information storage means for storing initial name information set in advance in the first electronic device, and initial name information stored in the name information storage means. Changing means for changing to the name information requested by the second electronic device, and the sending means sends the name information changed by the changing means. Furthermore, the first electronic device further includes application software for controlling the changing unit, and the changing unit stores the initial information stored in the name information storage unit when the application software is activated. The name information is changed to the name information.

Preferably, when the transmission means transmits the name information, at least the identification information unique to the first electronic device is transmitted at the same time, and the connection establishment means, based on the name information and the identification information, 1 establishes a wireless connection with one electronic device.
Furthermore, the first electronic device has auxiliary storage means for temporarily storing the initial name information stored in the name information storage means before the changing means changes the name information. The changing means, when changing the name information, rewrites and changes the initial name information stored in the name information storage means to the name information, and the sending means includes the identification information and the name information. In addition to the transmission of the name information stored in the storage means, the initial name information stored in the auxiliary storage means is simultaneously transmitted.
In addition, when the wireless connection with the first electronic device is established by the connection establishment unit, the changing unit stores the name information stored in the name information storage unit in the auxiliary storage unit. The initial name information is rewritten and changed.

  Furthermore, when the second electronic device establishes a wireless connection with the first electronic device by the connection establishing means, at least registration means for registering the identification information transmitted from the first electronic device, Have. The second electronic device further includes setting means for setting a pairing mode for automatically performing processing for establishing a wireless connection between the first electronic device and the second electronic device, The search means searches for the name information when the pairing mode is set by the setting means.

Preferably, the second electronic device further includes a determination unit that determines whether or not the identification information is registered by the registration unit, and the identification information is registered based on a determination result of the determination unit. If not, the setting means sets the pairing mode, and if the identification information is registered according to a determination result of the determination means, the connection establishment means has an electronic device having the registered identification information And establish a wireless connection. The setting means sets the pairing mode when the power supply of the second electronic device is activated, or the setting means activates the power supply of the second electronic device for the first time. Only when the pairing mode is set. Further, the setting means can set the pairing mode in response to a user operation.
The connection establishment means establishes a wireless connection with the first electronic device having the name information searched first when there are a plurality of the name information searched by the search means.

Preferably, the wireless communication protocol is a communication protocol based on Bluetooth, and the first electronic device and the second electronic device both have a Bluetooth communication module, and the wireless communication protocol is transmitted via the communication module. Communicate. Further, the registration means can register the identification information for each Bluetooth profile information supported by the second electronic device. The identification information is address information unique to the communication module.
One of the first electronic device and the second electronic device is set as a slave-side electronic device, and the other is set as a master-side electronic device.

  A communication system pairing method of the present invention is a communication system pairing method for establishing a wireless connection between a first electronic device and a second electronic device in accordance with a wireless communication protocol. The electronic device includes a step of transmitting name information of the first electronic device requested by the second electronic device, the second electronic device searching for the name information, and the searching step Establishing the wireless connection with the first electronic device that has transmitted the name information when the name information is retrieved by:

  A communication system program of the present invention is a communication system program for establishing a wireless connection between a first electronic device and a second electronic device according to a wireless communication protocol, wherein the first electronic device includes: A step of transmitting name information of the first electronic device requested by the second electronic device, wherein the second electronic device searches for the name information; Is retrieved, a step of establishing a wireless connection with the first electronic device that has transmitted the name information is executed.

  The electronic device of the present invention is an electronic device that establishes a wireless connection with another electronic device and transmits / receives data according to a wireless communication protocol, and when searching for another electronic device, a specific name to be searched Search name storage means for storing information in advance, search means for searching for the specific name information from one or a plurality of name information transmitted from the other electronic device, and the specific name information is searched by the search means Connection establishment means for establishing a wireless connection with the other electronic device that has transmitted the name information.

  An electronic device of the present invention is an electronic device that establishes a wireless connection with another electronic device and transmits / receives data in accordance with a wireless communication protocol, and stores name information storage means that stores preset name information; Application software that supports wireless connection with the other electronic device, and when the application software is activated, initial name information stored in the name information storage means is used as name information requested by the other electronic device. A changing means for changing, a sending means for sending the name information changed by the changing means, a connection establishing means for establishing a wireless connection with the other electronic device according to a connection request from the other electronic device, Have

  According to the present invention, when performing pairing between the first electronic device and the second electronic device, the first electronic device transmits the name information of the first electronic device requested by the second electronic device. As a result, the second electronic device can automatically identify the first electronic device to be paired, and can easily realize pairing with a desired device without complicated operations. it can.

1 is a diagram illustrating an overall configuration of a communication system according to an embodiment of the present invention. It is a block diagram which shows the structural example of the information terminal of the Example of this invention. It is a block diagram which shows the structural example of the onboard equipment of the Example of this invention. It is a block diagram which shows the internal structure of the communication connection part of the information terminal of this invention, and the communication connection part of onboard equipment. It is a figure which shows an example of a passkey confirmation screen. It is the flowchart which showed the pairing procedure which the information terminal of the Example of this invention performs. It is the flowchart which showed the pairing procedure which the onboard equipment of the Example of this invention performs. It is the flowchart which showed the procedure of the pairing process between an information terminal and onboard equipment.

Embodiments of the present invention will be described in detail with reference to the drawings. A preferred embodiment of the present invention relates to a mode in which an information terminal brought into a vehicle is used by being paired with an in-vehicle device equipped with AV playback, broadcast reception, navigation function, and the like based on the Bluetooth standard.
For example, by connecting these devices according to Bluetooth A2DP, the music on the information terminal can be reproduced and output on the vehicle-mounted device side. Further, by connecting these devices in accordance with HFP, a call received at the information terminal can be received through a headset connected to the vehicle-mounted device side. Furthermore, by connecting these devices according to DUN, the on-board unit can be connected to the Internet via the public line connection function of the information terminal, and the information providing service installed on the on-board unit can be used.
Here, the information terminal is a multifunctional portable terminal having a communication function capable of processing information, such as a mobile phone, a smartphone, a palmtop personal computer, and a laptop personal computer.
On the other hand, the vehicle-mounted device is an electronic device mounted on a vehicle, and may include an audio / video player, a television / radio broadcast receiver, a navigation device, a navigation system, an in-vehicle system, and the like. However, the technology of the present invention is not limited to the communication system according to the Bluetooth standard shown here, but can be used in communication systems according to other wireless communication protocols.
In the following description, an electronic device corresponding to the Bluetooth communication standard is abbreviated as a BT compatible device.

  FIG. 1 is a diagram illustrating a configuration of a communication system according to an embodiment of the present invention. In FIG. 1, a communication system 1 includes an information terminal 10 and an in-vehicle device 20 and can be connected by short-range wireless communication (hereinafter, Bluetooth connection) 30 according to the Bluetooth standard. The information terminal 10 is a multifunctional smartphone having a communication function, and the vehicle-mounted device 20 has a navigation function, a multimedia function, and a hands-free function, and is a BT compatible device. The in-vehicle device 20 serves as a master and the information terminal 10 serves as a slave, and performs various data communications through the Bluetooth connection 30.

  The Bluetooth connection 30 includes a connection profile (for example, HFP, A2DP, DUN) corresponding to both the information terminal 10 and the vehicle-mounted device 20. The information terminal 10 and the vehicle-mounted device 20 can be paired via a Bluetooth connection 30 having a common connection profile or a plurality of connection profiles, and can perform various data communications. Specific procedures for pairing these devices will be described later. The information terminal 10 and the vehicle-mounted device 20 may be provided with other data exchange communication means, for example, a wired connection by a USB (Universal Serial Bus), a wireless LAN connection, or the like.

  FIG. 2 is a block diagram showing a typical configuration of the information terminal 10. The information terminal 10 includes an input unit 110 that receives input from a user, an audio output unit 111 that outputs audio, a display unit 112 that displays various images and information on a display, data communication with an external network, and a public wireless line A communication unit 120 that enables communication with a telephone through a network, a telephone function unit 121 that performs a call with other telephones, and a communication connection unit 140 that enables connection with the vehicle-mounted device 20 through a Bluetooth connection 30. A data memory 160 for storing audio data, video data, map data, etc., a program memory 161 for storing application software and programs held by the information terminal 10, a control unit 170 for controlling each part of the information terminal 10, and connecting the parts And a bus 190.

  The input unit 110 is for accepting various instruction operations in the information terminal 10, and includes various buttons, a touch panel attached to the display surface of the display unit 112, a microphone capable of voice input, and the like. The operation signal is output to the controller 170.

  The audio output unit 111 performs D / A conversion on the audio data provided from each unit of the information terminal 10 and outputs the audio via an amplifier or a speaker. The display unit 112 selectively displays image data and video data provided from each unit of the information terminal 10 on the display.

The communication unit 120 connects to an external network, performs various data communications, and connects to a public wireless network to enable communication with a telephone. As an example, it is possible to connect to an external network, acquire application software, and store it in the data memory 160 or the program memory 161.
The telephone function unit 121 performs a call or the like with a telephone connected to the public wireless network via the communication unit 120 using the microphone of the input unit 110 or the speaker of the audio output unit 111.

The communication connection unit 140 includes various wireless communication modules, and includes a connection function unit 141 that controls wireless connection and wireless communication with other BT compatible devices, and an information memory 142 that stores information unique to the wireless communication module. Yes. Data is transmitted / received to / from other connected BT compatible devices via the communication connection unit 140. In the following description, an example of a Bluetooth communication module will be described as an example of a wireless communication module.
The connection function unit 141 controls various functions in pairing with other BT-compatible devices, and also controls various data communications by Bluetooth with the paired devices.

The information memory 142 stores address information (Bluetooth address; hereinafter referred to as BT address) unique to the wireless communication module provided in the information terminal 10 and a Bluetooth device name (hereinafter referred to as BT device name) set by an arbitrary character string. The information memory 142 can also store the BT device name (old BT device name) before being changed when the BT device name is changed by the BT device name changing unit 151 described later. .
The BT address is unique identification information assigned when the wireless communication module is manufactured, and is usually expressed in hexadecimal (for example, 00: D0: 51: 63: CB: 9F) and changed by the user. Is an eigenvalue that cannot. The BT device name is name information that can be freely set by the user, and a name that can be distinguished from other devices can be set. This BT device name is composed of a character string (alphanumeric characters).
In the following description, an example in which the BT address and the BT device name are stored in the information memory 142 will be described. However, the BT address and the BT device name can be stored in the data memory 160. One of them may be stored in the information memory 142 and the other may be stored in the data memory 160. In addition, the old BT device name can be stored in the data memory 160 in addition to being stored in the information memory 142.

  The data memory 160 stores information necessary for executing various functions of the information terminal 10 such as audio data, video data, map data, and telephone directory data used for telephone functions. Further, information on BT compatible devices paired in the past is stored as registered BT information. The program memory 161 stores various applications and programs. For example, a program for reproducing audio data and video data, a program for browsing information on the Internet via the communication unit 120, a program for making a call, and the like are stored. The program memory 161 stores application software (hereinafter referred to as a pairing support application) that supports the pairing setting at the time of Bluetooth connection. The pairing support application can be stored in the data memory 160 by downloading via the communication unit 120 or reading from an external storage such as an SD card. In a preferred embodiment, when the pairing support application is executed, the information terminal 10 is controlled to transmit the BT device name required by the vehicle-mounted device 20, and when the pairing support application is not executed, the information terminal 10 is The BT device name set in advance is controlled to be transmitted.

  The control unit 170 includes a device such as a central processing unit, a microcomputer, or a microprocessor, executes a program stored in the program memory 161, and controls each unit of the information terminal 10.

  Next, FIG. 3 is a block diagram showing a typical configuration of the vehicle-mounted device 20. As shown in the figure, the vehicle-mounted device 20 includes an input unit 210 that receives input from a user, an audio output unit 211 that outputs audio, and various types of information related to applications in which playback information and navigation information of various media are executed. Information is displayed by a display unit 212 for displaying, a navigation unit 220 for performing guidance guidance to a purpose, a multimedia unit 221 for performing reproduction of various media, a hands-free unit 222 for enabling hands-free calling, and a Bluetooth connection 30. A communication connection unit 240 that enables connection with the terminal 10, a data memory 260 that stores data such as audio data, video data, and map data, a program memory 261 that stores programs for executing applications, and the on-vehicle device 20 The control unit 270 that controls each part of the And a bus 290 that.

  The input unit 210 is for accepting various instruction operations in the vehicle-mounted device 20, and includes various buttons, a touch panel attached to the display surface of the display unit 212, a microphone capable of voice input, and the like. The operation signal is output to the control unit 270.

  The audio output unit 211 D / A converts audio data provided from each unit, and outputs the audio via an amplifier or a speaker. The display unit 212 selectively displays image data and video data provided from each unit on a display.

  The navigation unit 220 uses a GPS satellite or an autonomous navigation sensor to perform a vehicle position calculation function for calculating the vehicle position, a route search function for searching for an optimum route to the destination, and guidance for the searched route. Executes guidance guidance functions When the navigation unit 220 is operated, the control unit 270 outputs voice guidance at the time of guidance guidance to the voice output unit 211 as a voice signal, generates a map image around the vehicle position, and displays it as a video signal. Or output to

The multimedia unit 221 has a function of reproducing audio data and video data stored in a CD, DVD, Blu-ray disc, memory medium, data memory 260, and the like, a function of receiving TV broadcasts and radio broadcasts, and the like. Are output to the audio output unit 211, and the video data and the image data are output to the display unit 212.
The hands-free unit 222 enables hands-free operation using an input / output unit such as a microphone or a speaker of the audio output unit 211 as the input unit 210, and performs a voice call using the call function of the connected information terminal 10.

The communication connection unit 240 includes various wireless communication modules, and includes a connection function unit 241 that controls wireless connection and wireless communication with other BT-compatible devices, and an information memory 242 that stores information unique to the wireless communication module. Yes. Data is transmitted / received to / from other connected BT compatible devices via the communication connection unit 240. In the following description, an example of a Bluetooth communication module will be described as an example of a wireless communication module.
The connection function unit 241 controls various functions in pairing with other BT-compatible devices, and controls various data communications by Bluetooth with the paired devices.

The information memory 242 stores a BT address unique to the wireless communication module provided in the vehicle-mounted device 20 and a BT device name set by an arbitrary character string.
In the following description, an example in which the BT address and the BT device name are stored in the information memory 242 will be described. However, the BT address and the BT device name can be stored in the data memory 260. One of them may be stored in the information memory 142 and the other may be stored in the data memory 160.

  The data memory 260 stores information necessary for executing various functions of the vehicle-mounted device 20 such as audio data, video data, map data, and telephone directory data used for telephone functions. Moreover, the data acquired from the information terminal 10 can be memorize | stored as needed. Further, information on BT compatible devices paired in the past is stored as registered BT information. The program memory 261 stores a program for controlling communication connection with the information terminal 10 in addition to a program for controlling the navigation unit 220, the multimedia unit 221, and the hands-free unit 222.

  The control unit 270 includes a device such as a central processing unit, a microcomputer, or a microprocessor, executes a program stored in the program memory 261, and controls each unit of the vehicle-mounted device 20.

  Next, FIG. 4 is a block diagram illustrating an internal configuration of the connection function unit 141 of the information terminal 10 and the connection function unit 241 of the vehicle-mounted device 20. However, this figure shows only functional blocks for realizing pairing at the time of Bluetooth connection 30 between both communication devices.

The connection function unit 141 of the information terminal 10 includes an application activation detection unit 150, a Bluetooth (BT) device name change unit 151, a Bluetooth (BT) information transmission unit 152, a connection establishment execution unit 153, and a pair device registration unit 154. .
On the other hand, the connection function unit 241 of the vehicle-mounted device 20 includes an operation detection unit 250, a pairing mode setting unit 251, a Bluetooth (BT) device search unit 252, a Bluetooth (BT) device identification unit 253, a connection establishment execution unit 254, and a pair device. A registration unit 255.

  The application activation detection unit 150 detects that a pairing support application that supports pairing setting with the vehicle-mounted device 20 is activated by the control unit 170. This pairing support application is activated in response to a user operation.

  When the application activation detection unit 150 activates the pairing support application, the BT device name change unit 151 changes the BT device name stored in the information memory 142 to a specific name, and the BT device name in the information memory 142 Rewrite the name. This specific name is preset in the BT device name changing unit 151 and is changed to, for example, the name “APN BT SETTING”. Here, it is desirable to set this specific name so that it can be distinguished from other BT device names. In another aspect, the pairing support application includes information on a specific name, and when the pairing support application is activated, the specific name is loaded into the BT device name changing unit 151 or generated. Good. In this case, the pairing support application may include the function of the BT device name changing unit 151. Further, the BT device name changing unit 151 can store the old BT device name before the change in the information memory 142 before changing the BT device name as described above. Furthermore, the BT device name changing unit 151 returns the BT device name in the information memory 142 to the old BT device name when communication connection with another BT compatible device is established by the connection establishment executing unit 153 described later.

For example, when the name “DeviceA” is stored in the information memory 142 in advance as the name of the BT device, the BT device name changing unit 151 detects the activation of the pairing support application by the application activation detection unit 150. The name of the BT device is temporarily changed from “Device A” to “APN BT SETTING”. At this time, “Device A” before the change is stored in the information memory 142 as the old BT device name. After that, when the pairing process is performed and the communication connection between the information terminal 10 and the vehicle-mounted device 20 is established, the BT device name is changed from “APN BT SETTING” to “Device A”.
Note that the BT device name changing unit 151 may provide the changed BT device name to the BT information transmitting unit 152 without rewriting the BT device name stored in the information memory 142.

The BT information transmission unit 152 receives a transmission request for BT information transmitted from another BT compatible device, and stores the BT information (BT device name and BT address) stored in the information memory 142 for the BT corresponding to the transmission request. Send to device. For example, when receiving a transmission request for BT information from the vehicle-mounted device 20, the BT information transmission unit 152 transmits the BT information stored in the information memory 142 to the vehicle-mounted device 20. Note that it is desirable that the BT information transmission unit 152 transmits the old BT device name before the change in addition to the BT device name and the BT address. When the BT information transmission unit 152 receives a BT transmission request from another BT-compatible device and is able to return BT information to the BT-compatible device, the own information terminal 10 receives the BT information from the other BT-compatible device. It is in a detectable state.
When the BT device name changing unit 151 changes the BT device name without rewriting, the changed BT device name provided from the BT device name changing unit 151 is transmitted.

  The connection establishment execution unit 153 receives a pairing request from another BT-compatible device, transmits the BT information (BT device name, BT address, old BT device name) of the own information terminal 10 and sends the pairing request. BT information (BT device name, BT address) is acquired from the transmitted BT-compatible device. Thereafter, a passkey is received from the BT-compatible device, and a connection with the information terminal 10 is established using this passkey. For example, when receiving a pairing request from the vehicle-mounted device 20, the connection establishment executing unit 153 transmits the BT information of the own terminal 10 to the vehicle-mounted device 20 and also acquires the BT information from the vehicle-mounted device 20. Thereafter, when a passkey is received from the vehicle-mounted device 20, a Bluetooth communication connection with the vehicle-mounted device 20 is established using the passkey.

  The pair device registration unit 154 establishes a communication connection by the connection establishment execution unit 153, shares a unique access code called a link key with the paired BT compatible device, and forms a pair with the BT compatible device. Are registered in the data memory 160 as registered BT information and registered. For example, the pair device registration unit 154 establishes a communication connection with the vehicle-mounted device 20 by the connection establishment execution unit 153, shares the link key with the paired vehicle-mounted device 20, and the BT information of the link key and the vehicle-mounted device 20 Are stored in the data memory 160 as registered BT device information. Here, the link key is generated by either the pair device registration unit 154 or the pair device registration unit 255 and is shared with each other.

  The operation detection unit 250 detects that a predetermined operation executed by the vehicle-mounted device 20 has been performed. Specifically, the operation detection unit 250 inputs that the power source of the vehicle-mounted device 20 is activated for the first time, the paired BT compatible devices are stored in the data memory 260, and an operation for setting the pairing mode is input. It is detected that the data has been input to the unit 210. The operation detection unit 250 determines whether or not it is the first activation by checking the information of the first activation flag stored in the data memory 260. Further, not only the first activation but also the time when the vehicle-mounted device 20 is turned on can be detected.

  When a predetermined operation is detected by the operation detection unit 250, the pairing mode setting unit 251 sets a pairing mode that automatically establishes a Bluetooth wireless connection. By setting this pairing mode, pairing processing with another BT-compatible device is started. Thereafter, when the pairing process with another BT-compatible device is completed and a communication connection is established, the pairing mode is canceled.

  When the pairing mode setting unit 251 sets the pairing mode, the BT device search unit 252 searches for other BT-compatible devices that exist in the Bluetooth communication area. Specifically, it is present in the Bluetooth communication area by sending a transmission request for BT information to another BT compatible apparatus existing in the Bluetooth communication area and receiving a response from the BT compatible apparatus. Search for a BT compatible device. For example, the BT device search unit 252 transmits a transmission request for BT information to the information terminal 10 existing in the Bluetooth communication area of the vehicle-mounted device 20, and returns the BT of the information terminal 10 as a response from the information terminal 10. Receive information.

  When the BT device specifying unit 253 receives the BT information as a response to the BT information transmission request transmitted by the BT device searching unit 252, the BT device name of the received BT information is set to a specific name (for example, “APN BT SETTING”). A matching BT-compatible device is specified as a pairing target. When a plurality of BT-compatible devices are searched by the BT device search unit 252, a BT-compatible device that matches a specific name is specified. On the other hand, when the BT device name of the received BT information is not a specific name, the BT device specifying unit 253 does not specify the BT-compatible device. For example, when the BT device specifying unit 253 receives BT information from the information terminal 10 in response to the BT information transmission request transmitted by the BT device searching unit 252, the received BT device name of the information terminal 10 is “APN BT SETTING”. And the information terminal 10 whose BT device name is “APN BT SETTING” is specified as a BT compatible device to be paired.

  The connection establishment execution unit 254 performs pairing with the BT-compatible device specified by the BT device specification unit 253, and establishes a communication connection using Bluetooth. Further, when the BT device is not specified by the BT device specifying unit 253, the communication connection with the BT compatible device selected by the user is established by the conventional method. For example, when the connection establishment execution unit 254 is identified as a BT-compatible device to be paired by the information terminal 10 by the BT device identification 253, the connection establishment execution unit 254 sends BT information (BT address, BT device name, old BT device) to the information terminal 10. Name). When the BT information is returned from the information terminal 10, a pass key is generated based on the BT information, and the pass key is shared with the information terminal 10. Then, the connection establishment execution unit 254 establishes a Bluetooth communication connection with the information terminal 10 using this passkey.

  Note that the connection establishment execution unit 254 generates a confirmation screen 300 as shown in FIG. 5 and displays it on the display unit 212 before confirmation by the user before establishing a communication connection with the information terminal 10 using the passkey. It is also possible to make it. When “Yes” on the key 301 is pressed on the confirmation screen 300, a Bluetooth communication connection with the information terminal 10 is established. On the other hand, when “No” on the key 302 is pressed, the Bluetooth connection process with the information terminal 10 is stopped. At this time, at least the same pass key displayed on the confirmation screen 300 is displayed on the display unit 112 of the information terminal 10.

  The pair device registration unit 255 establishes a communication connection by the connection establishment execution unit 254, shares the link key with the paired BT compatible device, and supports the link key and the BT information of the paired BT compatible device. In addition, it is stored in the data memory 260 as registered BT information and registered. For example, the pair device registration unit 255 establishes a communication connection with the information terminal 10 by the connection establishment execution unit 254, shares the link key with the paired information terminal 10, and the link key and the BT information of the information terminal 10 Are stored in the data memory 160 as registered BT device information.

Next, an execution procedure of pairing between the information terminal 10 configured as described above and the vehicle-mounted device 20 will be described with reference to FIGS.
FIG. 6 is a diagram illustrating an operation of a pairing procedure performed by the information terminal 10 of the communication system 1 according to the present embodiment.
First, the application activation detection unit 150 monitors whether or not the pairing support application has been activated by the control unit 170 (step S101). Here, when the pairing support application is activated in response to a user operation, the application activation detection unit 150 notifies the BT device name change unit 151 that the pairing support application has detected activation. The application activation detection unit 150 continuously monitors until the pairing support application is activated.

When the activation of the pairing support application is detected by the application activation detection unit 150, the BT device name change unit 151 changes the BT device name stored in the information memory 142 to a specific name (for example, “APN BT SETTING”). Then, it is rewritten (step S103). At this time, the BT device name changing unit 151 temporarily stores the old BT device name before the change in the information memory 142.
Subsequently, when the BT device name changing unit 151 changes the BT device name, the BT information transmitting unit 152 is able to respond to a transmission request for BT information from another BT-compatible device, and receives the transmission request. It will be in the standby state. That is, the information terminal 10 is set in a state where it can be detected from another BT-compatible device and waits (step S105).

Thereafter, when receiving a transmission request for BT information from another BT-compatible device, a predetermined pairing process is performed (step S107). This pairing process will be described later.
When the pairing process in step S107 is completed, the control unit 170 ends the pairing support application whose activation is detected in step S101 and ends the pairing procedure process of the information terminal 10 (step S109). .

Next, FIG. 7 is a diagram illustrating a detailed operation of the pairing procedure performed by the vehicle-mounted device 20 of the communication system 1 according to the present embodiment.
When the user turns on the vehicle-mounted device 20, the operation detection unit 250 detects whether or not it is the first activation. Whether or not it is the first activation is determined by storing information on the first activation flag in the data memory 260 and confirming the flag information (step S201). Alternatively, it is possible to determine whether or not the power is turned on without determining whether or not it is the first activation.

When the operation detection unit 250 detects that it is the first activation based on the first activation flag information, the pairing mode setting unit 251 sets the pairing mode (step S203).
On the other hand, if it is not the first activation, the registered BT information stored in the data memory 260 is confirmed to confirm whether or not a BT-compatible device is registered (step S205). If no BT-compatible device is registered, the process proceeds to step S203, and the pairing mode setting unit 251 sets the pairing mode. If a BT-compatible device is registered in step S205, a communication connection with the registered BT-compatible device is attempted and a communication connection is established (step S207). And the control part 270 displays the initial screen of various functions, such as the map screen of a navigation function, and the reproduction | regeneration screen of an audio function, and complete | finishes the process of the pairing procedure of the onboard equipment 20. FIG.

When the pairing mode is set by the pairing mode setting unit 251 in step S203, next, pairing processing with another BT-compatible device is started (step S209). This pairing process will be described later.
When the pairing process in step S209 is completed, the pairing mode setting unit 251 cancels the set pairing mode, and the control unit 270 performs various functions such as a map screen of the navigation function and a playback screen of the audio function. The initial screen is displayed, and the pairing procedure processing of the vehicle-mounted device 20 is terminated.

FIG. 8 is a diagram illustrating operations of the pairing process (step S107) performed by the information terminal 10 of the communication system 1 according to the present embodiment and the pairing process (step S209) performed by the vehicle-mounted device 20. Note that the following description of the pairing process describes only the process performed by the information terminal 10 and the vehicle-mounted device 20 of the communication system 1 according to the present embodiment.
When the pairing mode is set in step S203, the in-vehicle device 20 searches the information terminal 10 in the Bluetooth communication area of the in-vehicle device 20 so that the BT device search unit 252 searches for other peripheral BT-compatible devices. On the other hand, a transmission request for BT information is transmitted (step S301). On the other hand, when the information terminal 10 is waiting in a state where it can be detected in step S <b> 105 and receives a transmission request for BT information from the vehicle-mounted device 20, the BT information transmission unit 152 stores the BT information stored in the information memory 142. Information (BT device name and BT address) is read (step S303). Then, the BT information transmission unit 152 returns the read BT information to the vehicle-mounted device 20 (step S305).

Subsequently, the BT device specifying unit 253 confirms whether the BT device name of the BT information provided from the information terminal 10 is a predetermined name, and if the BT device name provided from the information terminal 10 is a predetermined name. For example, the information terminal 10 is specified as a BT-compatible device to be paired (step S307). Specifically, since the BT device name (“APN BT SETTING”) of the BT information provided from the information terminal 10 is a predetermined name (“APN BT SETTING”), the BT device specifying unit 253 Is identified as a BT-compatible device to be paired.
When the BT device specifying unit 253 specifies the BT compatible device to be paired, the connection establishment executing unit 254 transmits a pairing request for starting pairing to the information terminal 10 specified as the BT compatible device to be paired. (Step S309). When the information terminal 10 receives the pairing request, the information terminal 10 reads BT information (BT device name, BT address, old BT device name) stored in the information memory 142, transmits the information to the on-vehicle device 20, and information on the on-vehicle device 20. BT information (BT device name, BT address) stored in the memory 242 is acquired (step S311).

When the connection establishment execution unit 254 acquires BT information from the information terminal 10, the connection establishment execution unit 254 generates a predetermined passkey from the BT information (step S313). Then, the connection establishment execution unit 254 transmits the generated passkey to the information terminal 10 and shares the passkey with the connection establishment execution unit 153 of the information terminal 10.
Then, the connection establishment executing unit 254 establishes a Bluetooth wireless communication connection with the information terminal 10 based on the shared passkey (step S317). At this time, the connection establishment execution unit 153 similarly establishes a Bluetooth wireless communication connection with the vehicle-mounted device 20 based on the shared passkey (step S319). In this way, both connection establishment execution units 153 and 254 establish wireless communication connections and are paired (step S321).

  In step S321, the vehicle-mounted device 20 paired with the information terminal 10 generates a link key based on the BT information and the passkey of the information terminal 10 and the vehicle-mounted device 20 and transmits the link key to the information terminal 10 to share the link key. (Step S323). Alternatively, the information terminal 10 may generate a link key and transmit the link key to the in-vehicle device 20. In other embodiments, the information terminal 10 and the in-vehicle device 20 generate and share a link key, respectively. It may be.

When the link key is shared in step S323, the pair device registration unit 255 of the in-vehicle device 20 associates the shared link key with the BT information of the information terminal 10, and registers it in the data memory 260 as the registered BT device information. Store (step S325). Similarly, the pair device registration unit 154 of the information terminal 10 associates the shared link key with the BT information of the vehicle-mounted device 20 and stores them as registered BT device information in the data memory 160 (step S327).
In this way, the pairing process (S107, S209) between the information terminal 10 and the vehicle-mounted device 20 is performed.

  By the pairing execution procedure of FIG. 6 to FIG. 8 described above, the pairing between the information terminal 10 and the vehicle-mounted device 20 is performed, and the Bluetooth wireless connection communication is established, so that the information terminal 10 and the vehicle-mounted device 20 are Various data communication is possible via the communication connection units 140 and 240. When both the information terminal 10 and the vehicle-mounted device 20 support the A2DP connection profile, the music data stored in the information terminal 10 can be played back by the vehicle-mounted device 20, and the HFP connection profile. , The in-vehicle device 20 can make a call through the telephone communication function of the information terminal 10.

  As described above, according to the present embodiment, the in-vehicle device is automatically activated simply by starting the pairing support application stored in the information terminal 10 and then setting the in-vehicle device 20 in the pairing mode by a predetermined operation. Since the desired information terminal 10 is identified and the pairing of the information terminal 10 and the vehicle-mounted device 20 is executed, it is possible to perform the pairing of the information terminal 10 and the vehicle-mounted device 20 with a simple operation, Pairing with the information terminal 10 desired by the user can be ensured.

  In the embodiment described above, the connection profile is not particularly considered. However, when the vehicle-mounted device 20 supports a plurality of connection profiles and registration BT information can be registered for each connection profile, the above-described pairing is performed. It is also possible to execute the processing for each connection profile. In this case, before performing the pairing process in step S209, a screen for selecting which connection profile is to be subjected to the pairing process is displayed and the user is allowed to select the selected connection profile. Perform pairing processing for. Further, when the registered BT information is confirmed by the data memory 260 in step S205, the unregistered connection profile is confirmed, the pairing process is executed for the unregistered connection profile, and the registered connection profile is changed. On the other hand, it is also possible to connect to a BT compatible device based on the registered BT information registered.

In the above-described embodiment, the BT information transmission unit 152 receives a BT transmission request from another BT-compatible device and returns a BT information to the BT-compatible device in a state that can be detected from the other BT-compatible device. Although it is when it is possible, it is not limited to this. For example, it is possible even when the BT information transmitting unit 152 is transmitting the BT information of the own information terminal 10 to another BT-compatible device existing in the Bluetooth communication area.
In this case, the BT device search unit 252 of the vehicle-mounted device 20 receives other BT information transmitted from other BT-compatible devices in the vicinity, so that other BT-compatible devices that exist in the Bluetooth communication area of the vehicle-mounted device 20. Search for. Then, the BT device specifying unit 253 specifies another BT-compatible device having a predetermined BT device name from one or more searched BT addresses.
In this way, the search process for the BT-compatible device can be modified.

  Moreover, in the said Example, the example which the application starting detection part 150, the BT apparatus name change part 151, the BT information transmission part 152, the connection establishment execution part 153, and the pair apparatus registration part 154 was controlled by the connection function part 141 was shown. However, these may be controlled by the pairing support application stored in the data memory 160, and further, only some of them may be controlled by the pairing support application.

  In the pairing procedure according to the present invention described above, the vehicle-mounted device 20 is paired when the vehicle-mounted device 20 is activated for the first time and when there is no BT-compatible device registered (connected) in the registered BT information in the past. Although the pairing mode is set by the ring mode setting unit 251, the pairing mode can be set at any time by a user operation. In addition, a conventional pairing procedure can be performed by a user operation.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to specific embodiments, and various modifications and changes can be made within the scope of the present invention described in the claims. It can be changed. In the above embodiment, the pairing procedure based on the Bluetooth standard is taken as an example, but the technology of the present invention can naturally be used in the pairing based on the badness of other wireless communication devices.

DESCRIPTION OF SYMBOLS 1 Communication system 10 Information terminal 20 Onboard equipment 30 Bluetooth connection 110,210 Input part 111, 211 Audio | voice output part 112,212 Display part 120 Communication part 121 Telephone function part 140,240 Communication connection part 141,241 Connection function part 142,242 Information memory 160, 260 Data memory 161, 261 Program memory 170, 270 Control unit 190, 290 Communication bus 220 Navigation unit 221 Multimedia unit 222 Hands free unit

Claims (15)

A communication system that establishes a wireless connection between a first electronic device and a second electronic device in accordance with a wireless communication protocol to send and receive data,
The first electronic device includes:
Execution means for executing an application that supports setting of a wireless connection;
Detecting means for detecting activation of the application;
Storage means for storing a specific name for specifying the second electronic device that is distinguishable from other electronic devices;
When activation of the application is detected by the detection means, the name preset in the first electronic device is changed to the specific name, and when activation of the application is not detected, Changing means for not changing a name preset in the first electronic device;
Transmitting means for transmitting name information of the preset name or the specific name in response to a request of the second electronic device ;
The second electronic device includes:
Search means for searching for electronic devices existing in the wireless communication area;
Determining means for determining whether the name of the electronic device searched by the search means matches the specific name, and specifying the matching electronic device;
Connection establishing means for establishing a wireless connection with the first electronic device specified by the specifying means ;
A communication system. The first electronic device includes:
Including name information storage means for storing the preset name ,
The communication system according to claim 1, wherein the changing unit changes the preset name stored in the name information storage unit to the specific name . When the transmission means transmits the name information, at least the identification information unique to the first electronic device is transmitted at the same time,
It said connection establishing means, based on the identification information and the name information, establishes a wireless connection with the first electronic device, a communication system according to claim 1 or 2. The first electronic device includes:
Wherein before the changing means changes the name the set in advance, an auxiliary storage means for temporarily storing a name the is the preset stored in the name information storing means further comprises,
It said changing means when changing the name the set in advance, the name information conversion El write the name that has been set in advance are stored in the particular name in the storage unit, according to claim 3 Communications system. The change means stores the specific name stored in the name information storage means in the auxiliary storage means when a wireless connection with the first electronic device is established by the connection establishment means. Ru rewriting the name that is set in advance, a communication system according to claim 4. The second electronic device includes:
6. The communication according to claim 5 , further comprising registration means for registering at least the identification information transmitted from the first electronic device when a wireless connection with the first electronic device is established by the connection establishing means. system. The second electronic device includes:
A setting means for setting a pairing mode for automatically performing a process of establishing a wireless connection between the first electronic device and the second electronic device;
The communication system according to any one of claims 1 to 6, wherein the search unit searches for a peripheral electronic device when a pairing mode is set by the setting unit. The second electronic device includes:
A determination means for determining whether or not the identification information is registered by the registration means;
If the identification information is not registered according to the determination result of the determination unit, the setting unit sets the pairing mode,
8. The communication system according to claim 7 , wherein when the identification information is registered according to a determination result of the determination unit, the connection establishment unit establishes a wireless connection with the electronic apparatus having the registered identification information. The setting means sets the pairing mode when the power source of the second electronic device is activated.
The communication system according to claim 8 . The communication system according to any one of claims 7 to 9, wherein the setting unit sets the pairing mode in response to a user operation. 11. The connection establishment unit according to claim 1, wherein when there are a plurality of electronic devices specified by the specification unit, the connection establishment unit establishes a wireless connection with the electronic device specified first . Communications system. The wireless communication protocol is a communication protocol by Bluetooth,
The first electronic device and the second electronic device both have a Bluetooth communication module, and perform the wireless communication via the communication module.
The communication system according to any one of claims 1 to 11 . 13. The communication system according to claim 12 , wherein the registration unit can register the identification information for each Bluetooth profile information supported by the second electronic device. The identification information is address information unique to the communication module.
The communication system according to claim 12 or 13 . One of the first electronic device and the second electronic device is set as a slave-side electronic device, and the other is set as a master-side electronic device.
The communication system according to any one of claims 1 to 14 .

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