JP2013201767A - Short range wireless communication apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately transfer audio data from a mobile phone via any of a plurality of communication interfaces, in a configuration where simultaneous connection between a plurality of communication interfaces capable of transferring the audio data and the mobile phone can be performed.SOLUTION: An on-vehicle apparatus 2, when transferring audio data from a mobile phone 3 via a USB communication channel, controls connection or disconnection of the USB communication channel, an A2DP, and an AVRCP so as to allow the mobile phone 3 to transfer the audio data via the USB communication channel. The on-vehicle apparatus, when transferring the audio data from the mobile phone 3 via the A2DP and the AVRCP, controls the connection or the disconnection of the USB communication channel, the A2DP, and the AVRCP so as to allow the mobile phone 3 to transfer the audio data via the A2DP and the AVRCP.

Description

  The present invention relates to a short-range wireless communication apparatus including a plurality of connection means capable of simultaneously connecting a plurality of communication interfaces with a communication partner apparatus and transferring sound data from the communication partner apparatus through the communication interface.

  In a short-range wireless communication device having a short-range wireless communication function, a short-distance wireless communication line is connected to a communication partner device such as a mobile phone, and a sound data transfer protocol for defining sound data transfer is set as a communication partner. By connecting to the device, the sound data is transferred from the communication partner device by the sound data transfer protocol and output from the speaker. For example, Patent Document 1 defines A2DP (Advanced Audio Distribution Profile) as a sound data transfer protocol that defines the transfer of sound data according to the Bluetooth (registered trademark) communication standard, and controls related to the control of sound data. It is disclosed that AVRCP (Audio / Video Remote Control Profile) is defined as a control data transfer protocol for defining data transfer.

JP 2008-273370 A

  By the way, a configuration having a plurality of communication interfaces between a short-range wireless communication device and a communication partner device is conceivable, and a plurality of communication interfaces (data communication protocol, transmission line called communication line) capable of transferring sound data are short-range. It is conceivable to simultaneously connect the wireless communication device and the communication partner device. In such a configuration in which a plurality of communication interfaces are simultaneously connected between the short-range wireless communication device and the communication partner device, for example, if the functions differ for each communication interface, the user may It is assumed that any one of the desired ones is selected and it is desired to transfer the sound data from the communication partner apparatus through the selected communication interface. However, depending on the specifications of the communication partner device, when a plurality of communication interfaces are simultaneously connected to the short-range wireless communication device, sound data may be output due to the simultaneous connection of the plurality of communication interfaces. It may be assumed that the data is not transferred properly.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to enable sound from a communication partner device in a configuration in which a plurality of communication interfaces capable of transferring sound data can be simultaneously connected to the communication partner device. An object of the present invention is to provide a short-range wireless communication apparatus that can appropriately transfer data by any one of a plurality of communication interfaces.

  According to the first aspect of the present invention, the plurality of connection means can simultaneously connect a plurality of communication interfaces with the communication partner apparatus, and transfer sound data from the communication partner apparatus through the communication interface. The control means selectively causes the sound data output means to output the sound data transferred to any one of the plurality of connection means by any one of the plurality of communication interfaces. Here, when the control means determines that a sound data output start request is generated by one of the plurality of communication interfaces in a state where the plurality of communication interfaces are communicably connected, the one communication interface The other communication interfaces except for the one communication interface are disconnected from among the plurality of communication interfaces, and the sound data transferred from the communication partner device through the one communication interface is output from the sound data output means.

  As a result, even if it is a specification that the communication partner device does not transfer sound data properly due to simultaneous connection of a plurality of communication interfaces with the short-range wireless communication device, output of sound data is started. The sound data can be appropriately transferred from the communication partner device by disconnecting the other communication interfaces other than the one of the plurality of communication interfaces while maintaining the connection of the communication interface in which the request is generated.

  According to the second aspect of the present invention, the control means generates a sound data output start request from one of the plurality of communication interfaces in a state where the plurality of communication interfaces are communicably connected. If it is determined that the communication interface is disconnected, all the communication interfaces except for the one communication interface are disconnected from the plurality of communication interfaces, and the sound transferred from the communication partner device by the one communication interface is disconnected. Data is output from the sound data output means.

  As a result, even if it is a specification that the communication partner device does not transfer sound data properly due to simultaneous connection of a plurality of communication interfaces with the short-range wireless communication device, output of sound data is started. By disconnecting all other communication interfaces (multiple other communication interfaces) except for one communication interface among the multiple communication interfaces while maintaining the connection of the communication interface where the request has occurred, Data can be transferred appropriately.

  According to the third aspect of the present invention, the control means outputs sound data from one communication interface connected last among the plurality of communication interfaces in a state where the plurality of communication interfaces are communicably connected. If it is determined that a start request has been generated, the communication interface is disconnected from the other communication device except for one communication interface while being connected to the other communication interface, and transferred from the communication partner device using the one communication interface. The sound data output is output from the sound data output means.

  As a result, when the communication partner device has a specification (so-called post-priority model) that can transfer the sound data only by the communication interface connected last, only the communication interface connected last among the plurality of communication interfaces. A communication interface that allows communication partner devices to transfer sound data to only the last connected communication interface by disconnecting other communication interfaces except for one of the multiple communication interfaces while maintaining the connection. It can be. That is, even if the communication partner device is a model with a later priority, the sound data can be transferred from the communication partner device with the priority model thereafter through the communication interface connected last.

  According to the fourth aspect of the present invention, the control means disconnects the other communication interfaces other than the one of the plurality of communication interfaces, and then reconnects the disconnected other communication interfaces.

  As a result, after disconnecting the other communication interfaces except for one of the plurality of communication interfaces, the other communication interfaces were connected last by reconnecting the disconnected other communication interfaces. When the sound data output start request is switched from one communication interface to another communication interface, the other communication interface is already connected at that time, so that the sound data can be The data can be transferred through another communication interface without interruption.

  According to the fifth aspect of the present invention, the control means disconnects the other communication interfaces other than the one communication interface from among the plurality of communication interfaces, and then generates a sound data output start request from the other communication interfaces. If it is determined that the other communication interface is connected, the other communication interface is disconnected and reconnected.

  As a result, when the sound data output start request is switched from one communication interface to another communication interface, even if the other communication interface is connected, the other communication interface is disconnected and reconnected. Thus, the other communication interface can be the communication interface connected last, and the sound data can be transferred by the other communication interface.

  According to the sixth aspect of the present invention, the control means disconnects the other communication interfaces other than the one communication interface from among the plurality of communication interfaces, and then generates a sound data output start request from the other communication interfaces. If it is determined that the other communication interface is not connected, the other communication interface is reconnected.

  Thereby, when the output start request of the sound data is switched from one communication interface to another communication interface, even if the other communication interface is not connected, by reconnecting the other communication interface, The other communication interface can be the last connected communication interface, and the sound data can be transferred by the other communication interface.

  According to the seventh aspect of the present invention, the control means outputs sound data from one of the plurality of communication interfaces connected first in a state where the plurality of communication interfaces are communicably connected. If it is determined that a start request has been generated, the communication interface is disconnected from the other communication device except for one communication interface while being connected to the other communication interface, and transferred from the communication partner device using the one communication interface. The sound data output is output from the sound data output means.

  As a result, when the communication partner device has a specification (so-called first-priority model) in which sound data can be transferred only by the communication interface that is connected first, only the communication interface that is connected first among the plurality of communication interfaces. A communication interface that allows communication partner devices to transfer sound data to only the first connected communication interface by disconnecting the other communication interfaces except for one of the multiple communication interfaces while maintaining the connection. It can be. That is, even if the communication partner device is a model with the first priority, the sound data can be transferred from the communication partner device that is the first priority model by the communication interface connected last.

  According to the invention described in claim 8, after the control means disconnects other communication interfaces except for one communication interface among the plurality of communication interfaces, a request to start outputting sound data by the other communication interface is generated. If it is determined that all communication interfaces including one communication interface are disconnected, the other communication interfaces are reconnected.

  As a result, when the sound data output start request is switched from one communication interface to another communication interface, all communication interfaces including the one communication interface are disconnected, and then the other communication interface is reconnected. Thus, the other communication interface can be the communication interface connected first, and the sound data can be transferred by the other communication interface.

  According to the invention described in claim 9, the plurality of connection means can simultaneously connect a plurality of communication interfaces with the communication partner apparatus, and transfer sound data from the communication partner apparatus through the communication interface. The control means selectively causes the sound data output means to output the sound data transferred to any one of the plurality of connection means by any one of the plurality of communication interfaces. Here, the control means determines that a sound data output start request is generated by one communication interface in a state where other communication interfaces other than the one communication interface are communicably connected among the plurality of communication interfaces. In this case, after the other communication interface is disconnected, the one communication interface is connected, and the sound data transferred from the communication partner apparatus through the one communication interface is output from the sound data output means.

  As a result, even if it is a specification that the communication partner device does not transfer sound data properly due to simultaneous connection of a plurality of communication interfaces with a short-range wireless communication device, By disconnecting the other communication interfaces except for one of the communication interfaces and then connecting the one communication interface, the sound data can be appropriately transferred from the communication partner device.

Functional block diagram showing an embodiment of the present invention Flow chart showing processing executed by in-vehicle device 2 equivalent diagram 2 equivalent diagram 2 equivalent diagram 2 equivalent diagram 2 equivalent diagram 2 equivalent diagram 2 equivalent diagram Diagram showing transition of communication interface connection mode Fig. 10 equivalent Fig. 10 equivalent Fig. 10 equivalent Fig. 10 equivalent Fig. 10 equivalent The figure which shows the connection mode of the communication interface collectively 16 equivalent diagram 2 equivalent diagram

  Hereinafter, an embodiment in which the present invention is applied to a BT-compatible in-vehicle device (hereinafter simply referred to as an in-vehicle device) having a Bluetooth (registered trademark) (hereinafter referred to as BT) communication function will be described with reference to the drawings. . Here, a BT-compatible mobile phone (hereinafter simply referred to as a mobile phone) having a BT communication function is brought into the vehicle interior of a vehicle in which the in-vehicle device is mounted. Is in a state where BT communication is possible.

  The BT communication system 1 includes an in-vehicle device 2 (corresponding to a short-range wireless communication device according to the present invention) mounted on a vehicle and a mobile phone 3 (corresponding to a communication partner device according to the present invention) brought into the vehicle interior. It consists of. The in-vehicle device 2 includes a control unit 4 (corresponding to control means in the present invention), a BT module 5 (corresponding to connecting means in the present invention), and a USB (Universal Serial Bus) module 6 (connecting means in the present invention). ), A storage unit 7, an audio processing unit 8, a display control unit 9, an operation input unit 10, a signal input unit 11, and the like. The control unit 4, the USB module 6, the storage unit 7, the sound processing unit 8, the display control unit 9, the operation input unit 10, and the signal input unit 11 are physically mounted on the control board 12. The BT module 5 is physically mounted on a BT module substrate 13, which is a separate member from the control substrate 12. The control unit 4 and the BT module 5 are connected by USB.

  The control unit 4 includes a CPU, a RAM, a ROM, an I / O bus, and the like that are well-known microcomputers, and controls overall operations such as communication operation and data management operation of the in-vehicle device 2. The BT module 5 has a function of connecting a BT communication line to a BT module of the cellular phone 3 described later and executing BT communication through the BT communication line. The BT module 5 includes, as a plurality of profiles defined in the BT communication standard, an HFP (Hands Free Profile) that defines a hands-free call, an A2DP (Advanced Audio Distribution Profile) that defines the transfer of sound data, and a sound data AVRCP (Audio / Video Remote Control Profile) that regulates transfer of control data related to control, SPP (Serial Port Profile) that regulates virtual serial port data communication, DUN (Dial-) that specifies dial-up connection to the Internet up Networking Profile), MAP (Message Access Profile) that regulates the transfer of email data, PBAP (Phone Book Access Profile) that regulates the transfer of phone book data, and OPP (Object Push Profile) that also regulates the transfer of phone book data ) And the like can be simultaneously connected (so-called multi-connection). These HFP, A2DP, AVRCP, SPP, DUN, MAP, PBAP, OPP, etc. mean data communication protocols defined for each function. Further, the A2DP and AVRCP are connected between the BT module 5 and a BT module of the cellular phone 3 to be described later, so that the sound data can be transferred by the A2DP and AVRCP. Corresponds to the interface.

  The USB module 6 has a connection terminal 6 a to which the connection terminal 14 a of the USB connection cable 14 can be attached and detached. One of the connection terminals 14 a of the USB connection cable 14 is connected to the connection terminal 6 a and the other of the USB connection cables 14 is connected. A function of connecting a USB communication line with a USB module of the mobile phone 3 in a state where the connection terminal 14b is connected to a connection terminal of a USB module of the mobile phone 3 to be described later, and executing USB communication through the USB communication line Have By connecting a USB communication line (USB application) between the USB module 6 and the USB module of the mobile phone 3 described later, sound data can be transferred via the USB communication line. The USB communication line is also described above. Similar to A2DP and AVRCP, it corresponds to the communication interface referred to in the present invention.

  The storage unit 7 has a storage area for storing various data. In this case, if the BT module 5 connects the MAP to the BT module of the mobile phone 3, the e-mail data transferred from the mobile phone 3 to the BT module 5 (sender information that can specify the destination of the e-mail, The reception date / time information that can specify the date and time when the e-mail is received by the mobile phone 3, the type information that can specify the type of the e-mail, such as subject information that can specify the subject of the e-mail input by the sender, etc. 7 is stored. If the BT module 5 connects the PBAP to the BT module of the mobile phone 3, the phone book data transferred from the mobile phone 3 to the BT module 5, the transmission operation from the in-vehicle device 2, or the in-vehicle device 2 Between the mobile phone 3 connected to the HFP between the mobile phone 3 and the call history data indicating the correspondence between the call origination time and the outgoing phone number, and the mobile phone 3 connected to the in-vehicle device 2 Incoming history data and the like indicating the correspondence between the incoming time and the incoming telephone number for the incoming operation are stored in the storage unit 7.

  The sound processing unit 8 is connected to a microphone 15 which is disposed in a portion of the vehicle interior where it is easy to collect sound emitted by the user, such as in the vicinity of the steering wheel, and is disposed outside the in-vehicle device 2. The audio amplifier 16 is connected to speakers 17a and 17b (corresponding to sound data output means in the present invention).

  In a state where the BT module 5 and the BT module of the mobile phone 3 described later are connected to the HFP between the two, the voice processing unit 8 inputs the voice uttered by the user from the microphone 15 as the transmission voice data. The input transmission voice data is subjected to voice processing and output to the BT module 5. When the reception voice data is input from the BT module 5, the input reception voice data is output to the audio amplifier 16.

  In addition, the voice processing unit 8 is configured so that the BT module 5 and the BT module of the cellular phone 3 to be described later are connected to each other from the BT module of the cellular phone 3 by the A2DP and AVRCP. The sound data transferred to 5 is output to the audio amplifier 16. The audio processing unit 8 also transfers the USB module 6 from the USB module of the mobile phone 3 to the USB module 6 through the USB communication line when the USB module 6 and the USB module of the mobile phone 3 to be described later can perform USB communication. The transferred sound data is output to the audio amplifier 16.

  When receiving the received voice data and sound data from the voice processing unit 8, the audio amplifier 16 amplifies the received received voice data and sound data and outputs them from the speakers 17a and 17b. Further, a tuner deck 18 is also connected to the audio amplifier 16, and the audio amplifier 16 receives the music data that the tuner deck 18 reproduces from, for example, a music recording medium from the tuner deck 18, and receives the input music data. Is also amplified and output from the speakers 17a and 17b.

  The display device 19 includes a display device 20 that displays various display screens, and an operation device 21 that forms a touch switch on the display screen. When the display command signal is input from the control unit 4, the display control unit 9 controls the display operation of the display device 20 in the display device 19 based on the input display command signal. When the operation input unit 10 inputs an operation detection signal from the operation device 21 in response to the user operating the touch switch formed on the display screen, the operation input unit 10 outputs the input operation detection signal to the control unit 4. The control unit 4 analyzes the operation detection signal input from the operation input unit 10 and identifies the user's operation.

  The signal input unit 11 is connected to an ACC (accessory) switch mounted on the vehicle. When the ACC signal output from the ACC switch is input, the input ACC signal is output to the control unit 4 and the control unit 4 4 turns on / off the apparatus power supply based on on / off of the ACC signal input from the signal input unit 11. That is, the control unit 4 turns on the apparatus power at the timing when the ACC signal transitions from off to on (activates the in-vehicle apparatus 2), and turns off the apparatus power at the timing when the ACC signal transitions from on to off (in-vehicle The device 2 is stopped).

  The mobile phone 3 includes a control unit 22, a telephone communication unit 23, a BT module 24, a USB module 25, a key input unit 26, a storage unit 27, a display unit 28, a microphone 29, a speaker 30, The power supply unit 31 is provided.

  The control unit 22 includes a CPU, a RAM, a ROM, an I / O bus, and the like that are well-known microcomputers, and controls overall operations such as communication operations and data management operations of the mobile phone 3. The telephone communication unit 23 performs telephone communication with the communication network 33. The communication network 33 includes facilities for providing a well-known mobile phone communication service such as a mobile phone base station and a base station controller. The BT module 24 has a function of connecting a BT communication line with the BT module 5 of the in-vehicle device 2 described above, and performing BT communication through the BT communication line, and includes a plurality of stipulated in the BT communication standard. As a profile, HFP, A2DP, AVRCP, SPP, DUN, MAP, PBAP, OPP, etc. can be connected simultaneously.

  The USB module 25 has a connection terminal 25 a to which the connection terminal 14 b of the USB connection cable 14 can be attached and detached, and one connection terminal 14 a of the USB connection cable 14 is connected to the connection terminal 6 a of the USB module 6 of the in-vehicle device 2. In addition, with the other connection terminal 14b of the USB connection cable 14 connected to the connection terminal 25a, the USB communication line is connected to the USB module 6 of the in-vehicle device 2, and USB communication is executed through the USB communication line. It has a function.

  The key input unit 26 includes various keys that can be operated by the user. The key input unit 26 outputs an operation detection signal to the control unit 22 in response to the user operating the key. The control unit 22 performs an operation input from the key input unit 26. The detection signal is analyzed to identify the user operation. The storage unit 27 has a storage area for storing various data. When the display command signal is input from the control unit 22, the display unit 28 displays various display screens based on the input display command signal. Further, when the voice uttered by the user is input as transmission voice data from the microphone 29, the control unit 22 performs voice processing on the input transmission voice data, and receives the reception voice data from the telephone communication unit 23. The received voice data is output from the speaker 30 as voice. The power supply unit 31 supplies power discharged from the battery 32 detachable to the main body to each functional block as operating power.

  In the configuration described above, when the control unit 4 connects the BT communication line between the BT module 5 and the BT module 24, the control unit 4 first automatically selects the HFP between the BT module 5 and the BT module 24 (the user can When the HFP connection is terminated, the A2DP is automatically connected between the BT module 5 and the BT module 24. When the A2DP connection is terminated, the AVRCP is then connected to the BT module. 5 and BT module 24 are automatically connected, and when AVRCP connection is completed, PABP is automatically connected between BT module 5 and BT module 24, and HFP, A2DP and AVRCP are connected. In this state, PABP data communication (transfer of telephone book data) is started. When the control unit 4 determines that the data communication by the PABP is finished, the control unit 4 disconnects the PABP connected between the BT module 5 and the BT module 24 and continues the connection of HFP, A2DP, and AVRCP (maintain) To do).

  As described above, the mobile phone 3 which is the data communication partner of the in-vehicle device 2 has a USB communication line connected between the USB module 6 and the USB module 25, and A2DP and AVRCP are connected between the BT module 5 and the BT module 24. In a state of being connected to each other, a communication interface for transmitting (transferring) sound data to the in-vehicle device 2 has two communication interfaces of a USB communication line and A2DP and AVRCP. Note that the sound data transmitted from the mobile phone 3 to the in-vehicle device 2 is, for example, music data played by a music playback function of the mobile phone 3.

  The mobile phone 3 transmits the sound data to the in-vehicle device 2 by receiving the sound data output start request command indicating the output start request of the sound data from the in-vehicle device 2. In this way, the sound data is transmitted to the in-vehicle device 2. When there are two communication interfaces of USB communication line and A2DP and AVRCP as communication interfaces for transmission, the behavior of transmitting sound data by any communication interface can be roughly divided into the following three types according to the specifications of the device. it can.

(A) A model (ordinary model) capable of transmitting sound data via any communication interface between the USB communication line and A2DP and AVRCP in a state where the USB communication line, A2DP and AVRCP are connected.
(B) A model capable of transmitting sound data only by a communication interface that is connected later (finally) between the USB communication line, A2DP, and AVRCP with the USB communication line, A2DP, and AVRCP connected (rear) Priority specific models)
(C) A model capable of transmitting sound data only by the communication interface connected first (first) between the USB communication line and A2DP and AVRCP in a state where the USB communication line, A2DP and AVRCP are connected (first) Priority specific models)
In other words, the normal model is a model in which the communication interface capable of transmitting sound data is not limited in the connection order, and the communication model capable of transmitting sound data is limited in the connection order in the later priority specific model and the first priority specific model. It is a model.

Next, the operation of the above configuration will be described with reference to FIGS. FIG. 2 to FIG. 9 are flowcharts showing processes executed by the control unit 4 of the in-vehicle device 2.
In the in-vehicle device 2, the control unit 4 executes the main processing when the device power of the in-vehicle device 2 is on (ACC switch is on), the communication interface connection processing as a sub-processing in the main processing, Communication interface determination process, USB communication line connection determination process, sound data output start request determination process by A2DP and AVRCP, sound data output start request determination process by USB communication line, sound data output end request determination process by A2DP and AVRCP, and USB Execute sound data output end request determination processing through the communication line. Hereinafter, each of these processes will be described sequentially.

(1) Main processing (see FIG. 2)
When the control unit 4 determines that the device power of the in-vehicle device 2 is turned on, the control unit 4 starts main processing, and executes the communication interface connection processing and the communication interface determination processing at the previous power-off time only once immediately after the device power is turned on. USB communication line connection determination processing, sound data output start request determination processing by A2DP and AVRCP, sound data output start request determination processing by USB communication line, sound data output end request determination processing by A2DP and AVRCP, and USB communication line The sound data output end request determination process is periodically executed at predetermined intervals until it is determined that the apparatus power supply is turned off (steps S1 to S8).

(2) Communication interface connection processing (see FIG. 3)
When the control unit 4 shifts from the main process to the communication interface connection process and starts the communication interface connection process, it is determined whether or not the USB connection cable 14 is physically connected between the in-vehicle device 2 and the mobile phone 3. Determination is made (step S11). Prior to this, the control unit 4 allows the user to connect one connection terminal 14a of the USB connection cable 14 to the connection terminal 6a of the USB module 6 of the in-vehicle device 2 and connect the other connection terminal 14b to the USB module of the mobile phone 3. If it is determined that the USB connection cable 14 is physically connected between the in-vehicle device 2 and the mobile phone 3 by connecting to the connection terminal 24a of 24 ("YES" in step S11), the USB communication line Are connected between the USB module 6 and the USB module 25 (USB communication is enabled) (step S12). In this case, the meaning of connecting the USB communication line between the USB module 6 and the USB module 25 is not to physically connect the USB communication line but to logically (on software) the USB communication line. The USB communication is made possible by connecting them.

  When the control unit 4 connects the USB communication line between the USB module 6 and the USB module 25, the control unit 4 connects the BT communication line between the BT module 5 and the BT module 24 (step S13). When the control unit 4 connects the BT communication line between the BT module 5 and the BT module 24, the control unit 4 connects the HFP between the BT module 5 and the BT module 24 as described above (step S14). The AVRCP is connected between the BT module 5 and the BT module 24 (step S15), the PBAP is connected between the BT module 5 and the BT module 24 (step S16), the communication interface connection process is terminated, and the main process Return to

  If the control unit 4 determines that the USB connection cable 14 is not physically connected between the in-vehicle device 2 and the mobile phone 3 (“NO” in step S11), the control unit 4 connects the USB communication line to the USB module 6. The BT communication line is connected between the BT module 5 and the BT module 24 (step S13), and the HFP is connected between the BT module 5 and the BT module 24. (Step S14), A2DP and AVRCP are connected between the BT module 5 and the BT module 24 (Step S15), PBAP is connected between the BT module 5 and the BT module 24 (Step S16), and a communication interface is connected. End the process and return to the main process.

(3) Communication interface determination process at the time of previous power-off (see Fig. 4)
When the control unit 4 shifts from the main process to the communication interface determination process at the previous power-off and starts the previous power-off communication interface determination process and the communication interface connection process, immediately before the previous apparatus power is turned off (ACC switch is turned off). In step S21, it is determined whether the sound data transmitted from the USB module 25 to the USB module 6 through the USB communication line has been output.

  If the control unit 4 determines that the sound data transmitted through the USB communication line is being output immediately before the previous apparatus power is turned off (“YES” in step S21), whether or not the USB communication line is connected. That is, it is determined whether or not the USB communication line and the A2DP and AVRCP are simultaneously connected, and the A2DP and AVRCP are connected after the USB communication line is connected first (step S22).

  The control unit 4 determines that the USB communication line is connected, that is, the USB communication line and the A2DP and AVRCP are connected at the same time, and the A2DP and AVRCP are connected after the USB communication line is connected first. Then ("YES" in step S22), for example, when the USB communication line is connected, the identification information notified from the USB module 25 (for example, device identification information that can identify the mobile phone 3) and the BT communication line are connected. By comparing the identification information notified from the BT module 24 (for example, device identification information capable of specifying the mobile phone 3) with the connection partner of the USB communication line of the USB module 6 and the A2DP of the BT module 5 And it is determined whether or not the connection partner of AVRCP is the same communication partner device (step S23).

  In this case, if the connection partner of the USB communication line of the USB module 6 and the connection partner of the A2DP and AVRCP of the BT module 5 are mounted on the same communication partner device, the identification information notified from the USB module 25 and the BT module On the other hand, if the connection partner of the USB communication line of the USB module 6 and the connection partner of the A2DP and AVRCP of the BT module 5 are mounted in different communication partner devices, the USB module 6 has the same identification information. The identification information notified from the module 25 and the identification information notified from the BT module 24 do not match.

  The control unit 4 determines that the identification information notified from the USB module 25 matches the identification information notified from the BT module 24, and the connection partner of the USB communication line of the USB module 6 and the A2DP and AVRCP of the BT module 5. If the connection partner is determined to be the same communication partner device ("YES" in step S23), for example, the identification information notified from the USB module 25 when the USB communication line is connected, or the BT communication line is used. When the identification information notified from the BT module 24 at the time of connection is determined, the communication partner device is connected to a specific model of later priority, that is, a plurality of communication interfaces capable of transmitting sound data. It is determined whether or not the model is a specific model that can be transmitted only by the communication interface to which the sound data was last connected (STEP Flop S24). When the control unit 4 determines that the communication partner device is a specific model of the later priority (“YES” in step S24), the control unit 4 disconnects the A2DP and AVRCP connected between the BT module 5 and the BT module 24. (Step S25).

  When the A2DP and AVRCP connected between the BT module 5 and the BT module 24 are disconnected in this way, the communication interface that can transmit sound data from the mobile phone 3 to the in-vehicle device 2 is only the USB communication line. Become. The control unit 4 transmits a sound data output start request command from the USB module 6 to the USB module 25, starts transmission of sound data from the USB module 25 to the USB module 6 through the USB communication line, and outputs from the speakers 17a and 17b. The output is started (step S26), the communication interface determination process at the previous power-off time is terminated, and the process returns to the main process.

  If the control unit 4 determines that the connection partner of the USB communication line of the USB module 6 and the connection partner of the A2DP and AVRCP of the BT module 5 are not the same communication partner device ("NO" in step S23), or If it is determined that the communication partner device is not the specific model of the later priority (“NO” in step S24), the sound data is output without disconnecting the A2DP and AVRCP connected between the BT module 5 and the BT module 24. A start request command is transmitted from the USB module 6 to the USB module 25, transmission of sound data from the USB module 25 to the USB module 6 through the USB communication line is started, and output from the speakers 17a and 17b is started (step S26). The communication interface judgment process at the time of the previous power off is finished and the main process To return.

  On the other hand, if the control unit 4 determines that the sound data transmitted via the USB communication line is not output immediately before the previous apparatus power is turned off ("NO" in step S21), the previous apparatus power is turned off. It is determined whether or not the sound data transmitted from the BT module 24 to the BT module 5 by A2DP and AVRCP was output immediately before (step S27).

  If the control unit 4 determines that the sound data transmitted by A2DP and AVRCP is output immediately before the previous apparatus power is turned off (“YES” in step S27), the USB communication line is also connected in this case. It is determined whether the USB communication line is connected to the A2DP and AVRCP at the same time, and the A2DP and AVRCP are connected after the USB communication line is connected first (step S28).

  The control unit 4 determines that the USB communication line is connected, that is, the USB communication line and the A2DP and AVRCP are connected at the same time, and the A2DP and AVRCP are connected after the USB communication line is connected first. Then (“YES” in step S28), it is determined whether or not the connection partner of the USB communication line of the USB module 6 and the connection partner of the A2DP and AVRCP of the BT module 5 are the same communication partner device (step S29). ).

  If the control unit 4 determines that the connection partner of the USB communication line of the USB module 6 and the connection partner of the A2DP and AVRCP of the BT module 5 are the same communication partner device ("YES" in step S29), for example, USB By determining the identification information notified from the USB module 25 when the communication line is connected or the identification information notified from the BT module 24 when the BT communication line is connected, the communication partner device is given first priority. If a plurality of communication interfaces capable of transmitting sound data are connected, it is determined whether or not the specified model can be transmitted only by the communication interface to which sound data is first connected ( Step S30). If the control unit 4 determines that the communication partner device is a specific model with the first priority (“YES” in step S30), the control unit 4 disconnects the USB communication line connected between the USB module 6 and the USB module 25. (USB communication is disabled) (step S31). In this case, the meaning of disconnecting the USB communication line is not to physically disconnect the USB communication line, but to disconnect the USB communication line logically (in software) to disable USB communication. It is.

  When the USB communication line connected between the USB module 6 and the USB module 25 is disconnected in this way, sound data can be transferred from the mobile phone 3 to the in-vehicle device 2. The only communication interfaces are A2DP and AVRCP. . The control unit 4 transmits a sound data output start request command from the BT module 5 to the BT module 24, starts transmission of sound data from the BT module 24 to the BT module 5 by A2DP and AVRCP, and outputs from the speakers 17a and 17b. Output is started (step S32), the communication interface determination process at the previous power-off time is terminated, and the process returns to the main process.

  If the control unit 4 determines that the USB communication line is not connected (“NO” in step S28), the connection partner of the USB communication line of the USB module 6 and the connection partner of the A2DP and AVRCP of the BT module 5 Are determined to be not the same communication counterpart device (“NO” in step S29), or if it is determined that the communication counterpart device is not a specific model with priority (“NO” in step S30), the USB module 6 and the USB module The sound data output start request command is transmitted from the BT module 5 to the BT module 24 without disconnecting the USB communication line connected to the BT 25, and the A2DP of the sound data from the BT module 24 to the BT module 5 and Transmission by AVRCP is started and output from speakers 17a and 17b is started (step S32), and returns to the end to main process your last power-off communication interface determination process.

  If the control unit 4 determines that the sound data transmitted by A2DP and AVRCP has not been output immediately before the previous apparatus power is turned off ("NO" in step S27), the sound data is transmitted by another communication interface. Is determined (step S33). If the control unit 4 determines that sound data has been output through another communication interface (“YES” in step S33), the control unit 4 disconnects the A2DP and AVRCP connected between the BT module 5 and the BT module 24. (Step S34), the USB communication line connected between the USB module 6 and the USB module 25 is disconnected (Step S35), and output of sound data from the speakers 17a and 17b by other communication interfaces is started ( Step S36). The communication interface determination process at the previous power-off is completed and the process returns to the main process.

(4) USB communication line connection determination process (see FIG. 5)
When the control unit 4 shifts from the main process to the USB communication line connection determination process and starts the USB communication line connection determination process, the USB connection cable 14 is physically connected between the in-vehicle device 2 and the mobile phone 3. It is determined whether or not (step S41). In the control unit 4, the user connects one connection terminal 14 a of the USB connection cable 14 to the connection terminal 6 a of the USB module 6 of the in-vehicle device 2 and the other connection terminal 14 b of the USB module 24 of the mobile phone 3. If it is determined that the USB connection cable 14 is physically connected between the in-vehicle device 2 and the mobile phone 3 ("YES" in step S41), the USB communication line is connected to the USB module 6 And the USB module 25 (USB communication is enabled) (step S42), the USB communication line connection determination process is terminated, and the process returns to the main process. Also in this case, the meaning of connecting the USB communication line between the USB module 6 and the USB module 25 is not to physically connect the USB communication line, but logically (on the software) ) Connect to enable USB communication.

(5) Sound data output start request determination processing by A2DP and AVRCP (see FIG. 6)
When the control unit 4 shifts from the main process to the sound data output start request determination process based on A2DP and AVRCP and starts the sound data output start request determination process based on A2DP and AVRCP, the sound data is output from the speakers 17a and 17b of the sound data based on A2DP and AVRCP. It is determined whether or not an output start request is generated (step S51).

  For example, in a state where the sound data transmitted from the in-vehicle device 2 through the USB communication line is output from the speakers 17a and 17b, the control unit 4 performs an output switching operation from the USB communication line to the A2DP and AVRCP on the operation device 21. It is determined that the user has performed an output start operation using A2DP and AVRCP with the controller device 21 without any sound data being output from the speakers 17a and 17b, and the sound data of A2DP and AVRCP is If it is determined that an output start request from the speakers 17a and 17b has been generated ("YES" in step S51), it is determined whether sound data is being output via the USB communication line (step S52).

  If it is determined that the sound data is not being output through the USB communication line (“NO” in step S52), the control unit 4 determines whether A2DP and AVRCP are being connected between the BT module 5 and the BT module 24. Is determined (step S55), and it is determined that A2DP and AVRCP are being connected between the BT module 5 and the BT module 24 ("YES" in step S55), a sound data output start request command is sent to the BT module 5. From the BT module 24 to the BT module 5 to start transmission of sound data by A2DP and AVRCP and start output from the speakers 17a and 17b (step S57), and sound data by A2DP and AVRCP End the output start request determination process and return to the main process.

  On the other hand, when determining that A2DP and AVRCP are not connected between BT module 5 and BT module 24 (“NO” in step S55), control unit 4 determines that A2DP and AVRCP are connected to BT module 5 and BT module 24. (Step S56), a sound data output start request command is transmitted from the BT module 5 to the BT module 24, and transmission of sound data by A2DP and AVRCP from the BT module 24 to the BT module 5 is started. Then, the output from the speakers 17a and 17b is started (step S57), the sound data output start request determination process by A2DP and AVRCP is terminated, and the process returns to the main process.

  If the control unit 4 determines that the sound data is being output via the USB communication line (“YES” in step S52), the control unit 4 ends the output of the sound data via the USB communication line (step S53), and the USB module 6 After disconnecting the USB communication line connected to the USB module 25 (step S54), the above-described steps S55 to S57 are executed, and the sound data output start request determination processing by A2DP and AVRCP is terminated. Return to main processing.

(6) Sound data output start request determination process via USB communication line (see FIG. 7)
When the control unit 4 shifts from the main process to the sound data output start request determination process through the USB communication line and starts the sound data output start request determination process through the USB communication line, a sound data output start request through the USB communication line is generated. It is determined whether or not (step S61).

  For example, the control unit 4 causes the operation device 21 to perform an output switching operation from the A2DP and AVRCP to the USB communication line while the sound data transmitted from the mobile phone 3 by the A2DP and AVRCP is output from the speakers 17a and 17b. It is determined that the user has performed an output start operation using the USB communication line with the operation device 21 in a state where no sound data is output from the speakers 17a and 17b. If it is determined that an output start request has been generated (“YES” in step S61), it is determined whether sound data based on A2DP and AVRCP is being output (step S62).

  If the control unit 4 determines that sound data based on A2DP and AVRCP is not being output (“NO” in step S62), it is determined whether or not the USB communication line is being connected between the USB module 6 and the USB module 25. Is determined (step S65), and if it is determined that the USB communication line is being connected between the USB module 6 and the USB module 25 ("YES" in step S65), a sound data output start request command is sent to the USB module 6. From the USB module 25 to the USB module 25 to start transmission of sound data via the USB communication line and start output from the speakers 17a and 17b (step S67). End the output start request determination process and return to the main process.

  On the other hand, when determining that the USB communication line is not connected between the USB module 6 and the USB module 25 (“NO” in step S65), the control unit 4 determines that the USB communication line is connected to the USB module 6 and the USB module 25. (Step S66), a sound data output start request command is transmitted from the USB module 6 to the USB module 25, and transmission of sound data via the USB communication line from the USB module 25 to the USB module 6 is started. Then, the output from the speakers 17a and 17b is started (step S67), the sound data output start request determination process through the USB communication line is terminated, and the process returns to the main process.

  If the control unit 4 determines that the sound data based on A2DP and AVRCP is being output (“YES” in step S62), the control unit 4 finishes outputting the sound data based on A2DP and AVRCP from the speakers 17a and 17b (step S62). S63) After disconnecting the A2DP and AVRCP connected between the BT module 5 and the BT module 24 (step S64), the above steps S65 to S67 are executed, and a sound data output start request via the USB communication line is executed. The determination process ends and the process returns to the main process.

(7) Sound data output end request determination processing by A2DP and AVRCP (see FIG. 8)
When the control unit 4 shifts from the main process to the sound data output end request determination process based on A2DP and AVRCP, and starts the sound data output end request determination process based on A2DP and AVRCP, the sound data is output from the speakers 17a and 17b of the sound data based on A2DP and AVRCP. It is determined whether or not an output end request has been generated (step S71). For example, the control unit 4 determines that the user has performed an output end operation on the operation device 21 in a state where sound data transmitted from the BT module 24 to the BT module 5 by A2DP and AVRCP is output from the speakers 17a and 17b. If it is determined that a request to end the output of sound data from the speakers 17a and 17b by A2DP and AVRCP has occurred ("YES" in step S71), a sound data output end request command is transmitted from the BT module 5 to the BT module 24. Then, the transmission of the sound data from the BT module 24 to the BT module 5 by A2DP and AVRCP is terminated, and the output from the speakers 17a and 17b is terminated (step S72).

  The control unit 4 disconnects the A2DP and AVRCP connected between the BT module 5 and the BT module 24 (step S73), ends the sound data output end request determination process using the A2DP and AVRCP, and returns to the main process. To do.

(8) Sound data output end request determination processing through the USB communication line (see FIG. 9)
When the control unit 4 shifts from the main process to the sound data output end request determination process through the USB communication line and starts the sound data output end request determination process through the USB communication line, the sound data from the speakers 17a and 17b of the sound data through the USB communication line is started. It is determined whether or not an output end request has been generated (step S81). For example, the control unit 4 determines that the user has performed an output end operation on the operation device 21 in a state where sound data transmitted from the USB module 25 to the USB module 6 through the USB communication line is output from the speakers 17a and 17b. If it is determined that a request to end the output of sound data from the speakers 17a and 17b via the USB communication line has occurred ("YES" in step S81), a sound data output end request command is transmitted from the USB module 6 to the USB module 25. Then, the transmission of the sound data from the USB module 25 to the USB module 6 through the USB communication line is terminated, and the output from the speakers 17a and 17b is terminated (step S82).

  The control unit 4 disconnects the USB communication line connected between the USB module 6 and the USB module 25 (step S83), ends the sound data output end request determination process using the USB communication line, and returns to the main process. To do.

  The series of processes described above will be specifically described. Here, when the A2DP and AVRCP are connected after the USB communication line is connected first, the sound data transmitted through the USB communication line immediately before the previous apparatus power is turned off is output from the speakers 17a and 17b. And the case where sound data transmitted by A2DP and AVRCP is output from the speakers 17a and 17b immediately before the previous apparatus power is turned off will be described.

  When the control unit 4 determines that the mobile phone 3 that is the data communication partner of the in-vehicle device 2 is a normal model, the communication interface capable of transmitting sound data is not limited by the connection order, and thus, as illustrated in FIGS. 10 and 11. Thus, when the device power is turned on, regardless of whether the sound data transmitted by the USB communication line was output immediately before the previous device power was turned off or the sound data transmitted by A2DP and AVRCP was output, The same communication interface as the communication interface that transmits the sound data immediately before the device power is turned off without disconnecting any of the connected USB communication line, A2DP, and AVRCP (while continuing the connection) Thus, transmission of sound data is started and output from the speakers 17a and 17b is started.

  Thereafter, when the control unit 4 determines that an output switching operation from the USB communication line to A2DP and AVRCP and an output switching operation from the A2DP and AVRCP to the USB communication line are performed, the connected USB communication line and the A2DP and Without disconnecting any of the AVRCP, the communication interface for transmitting the sound data is switched, the transmission of the sound data is started by the switched communication interface, and the output from the speakers 17a and 17b is started.

  Further, when the control unit 4 determines that the mobile phone 3 that is the data communication partner of the in-vehicle device 2 is the specific model of the later priority, the communication interface that can transmit sound data is limited to the communication interface that is connected last. As a result, when the sound data transmitted through the USB communication line is output immediately before the device power is turned off, that is, when the sound data is output through the previously connected communication interface. As shown in FIG. 12, the A2DP and AVRCP, which are communication interfaces connected later, of the connected USB communication line and A2DP and AVRCP are disconnected, and the sound data immediately before the previous apparatus power is turned off. Transmission of sound data is started through the USB communication line that has been transmitting and the output from the speakers 17a and 17b is started. .

  Thereafter, when the control unit 4 determines that an output switching operation from the USB communication line to the A2DP and AVRCP has been performed, a communication interface for reconnecting the disconnected A2DP and AVRCP and transmitting sound data from the USB communication line is established. Switching to A2DP and AVRCP, transmission of sound data is started by the switched A2DP and AVRCP, and output from the speakers 17a and 17b is started. Note that the control unit 4 may reconnect the previously disconnected A2DP and AVRCP before the output switching operation from the USB communication line to the A2DP and AVRCP is performed. Even when sound data is being output via a line, A2DP and AVRCP can be used as communication interfaces connected later. Further, if the A2DP and AVRCP are connected when the output switching operation from the USB communication line to the A2DP and AVRCP is performed, the A2DP and AVRCP may be disconnected and reconnected.

  On the other hand, when the control unit 4 outputs the sound data transmitted by A2DP and AVRCP immediately before the previous apparatus power is turned off, that is, when the sound data is output by the communication interface connected later. As shown in FIG. 13, without disconnecting any of the connected USB communication line and A2DP and AVRCP, the A2DP and the sound data that was transmitted immediately before the previous apparatus power was turned off Transmission of sound data is started by AVRCP, and output from the speakers 17a and 17b is started.

  Thereafter, when the control unit 4 determines that the output switching operation from the A2DP and AVRCP to the USB communication line has been performed, the control unit 4 disconnects the A2DP and AVRCP, which are communication interfaces connected later, and transmits a sound data. The A2DP and AVRCP are switched to the USB communication line, the transmission of the sound data is started by the switched USB communication line P, and the output from the speakers 17a and 17b is started.

  Further, when the control unit 4 determines that the mobile phone 3 that is the data communication partner of the in-vehicle device 2 is the specific model with the first priority, the control interface that can transmit the sound data is limited to the communication interface that is connected first. As a result, when the sound data transmitted through the USB communication line is output immediately before the device power is turned off, that is, when the sound data is output through the previously connected communication interface. As shown in FIG. 14, without disconnecting any of the connected USB communication line and A2DP and AVRCP, the USB communication line that has been transmitting sound data immediately before the previous apparatus power is turned off. Transmission of sound data is started and output from the speakers 17a and 17b is started.

  After that, when the control unit 4 determines that the output switching operation from the USB communication line to the A2DP and AVRCP has been performed, the control unit 4 disconnects the USB communication line that is the communication interface that has been connected first, and transmits the communication data. Switching from the USB communication line to A2DP and AVRCP, transmission of sound data is started by the switched A2DP and AVRCP, and output from the speakers 17a and 17b is started.

  On the other hand, when the control unit 4 outputs the sound data transmitted by A2DP and AVRCP immediately before the previous apparatus power is turned off, that is, when the sound data is output by the communication interface connected later. As shown in FIG. 15, the USB communication line that is the communication interface connected first among the connected USB communication line and A2DP and AVRCP is disconnected and immediately before the previous apparatus power is turned off. The transmission of the sound data is started by the A2DP and AVRCP that have been transmitting the sound data, and the output from the speakers 17a and 17b is started.

  After that, when determining that the output switching operation from the A2DP and AVRCP to the USB communication line has been performed, the control unit 4 disconnects the connected A2DP and AVRCP, reconnects the USB communication line that has been disconnected first, The communication interface for receiving sound data is switched from A2DP and AVRCP to a USB communication line, and transmission of sound data is started by the switched USB communication line, and output from the speakers 17a and 17b is started.

  FIG. 16 illustrates the processing described in FIGS. 10 to 15 described above, that is, USB communication immediately before the device power is turned off the last time when the A2DP and AVRCP are connected after the USB communication line is connected first. The processing when the sound data transmitted via the line is output from the speakers 17a and 17b and the case where the sound data transmitted via the A2DP and AVRCP is output from the speakers 17a and 17b are collectively shown. The same principle applies when the order of connection between the USB communication line and the A2DP and AVRCP is reversed. FIG. 17 shows the previous apparatus when the USB communication line is connected after the A2DP and AVRCP are connected first. The case where sound data transmitted via the USB communication line is output from the speakers 17a and 17b immediately before the power is turned off, and the case where sound data transmitted via the A2DP and AVRCP is output from the speakers 17a and 17b. The process is summarized.

  By the way, the above-described configuration is such that the USB communication line, which is a communication interface capable of transmitting sound data immediately after the device power supply of the in-vehicle device 2 is turned on, and the A2DP and AVRCP are automatically connected. The communication interface determination process at the time of previous power-off is executed so as to control the connection and disconnection of the USB communication line and the connection and disconnection of the A2DP and AVRCP based on the communication interface that has been transmitting sound data immediately before the power is turned off. If the configuration is such that the USB communication line, which is a communication interface capable of transmitting sound data immediately after the device power of the in-vehicle device 2 is turned on, and the A2DP and AVRCP are not automatically connected, the communication interface determination at the previous power-off time The processing may be executed as follows (see FIG. 18).

  That is, when the control unit 4 shifts from the main process to the communication interface determination process at the previous power-off and starts the previous power-off communication interface determination process and the communication interface connection process, the previous apparatus power is turned off (ACC switch is off). It is determined whether or not the sound data transmitted from the USB module 25 to the USB module 6 through the USB communication line was output immediately before (step S91).

  When the control unit 4 determines that the sound data transmitted via the USB communication line is being output immediately before the previous apparatus power is turned off (“YES” in step S91), the USB connection cable 14 is carried by the in-vehicle apparatus 2 and the portable device. It is determined whether or not it is physically connected to the telephone 3 (step S92). When determining that the USB connection cable 14 is physically connected between the in-vehicle device 2 and the mobile phone 3 (“YES” in step S92), the control unit 4 determines that the USB communication line is connected to the USB module 6 and the USB. Connected to the module 25 (enables USB communication) (step S93), transmits a sound data output start request command from the USB module 6 to the USB module 25, and transmits a USB communication line from the USB module 25 to the USB module 6. Transmission of the sound data is started and output from the speakers 17a and 17b is started (step S94), the communication interface determination process at the previous power-off time is terminated, and the process returns to the main process.

  If the control unit 4 determines that the sound data transmitted through the USB communication line has not been output immediately before the device power is turned off ("NO" in step S91), the BT module 24 sends A2DP and AVRCP. Whether or not the sound data transmitted to the BT module 5 has been output is determined (step S95).

  If it is determined that the sound data transmitted by A2DP and AVRCP is output immediately before the previous apparatus power is turned off (“YES” in step S95), the control unit 4 determines that A2DP and AVRCP are the BT module 5 and the BT module. 24 (step S96), a sound data output start request command is transmitted from the BT module 5 to the BT module 24, and transmission of sound data by the A2DP and AVRCP from the BT module 24 to the BT module 5 is started. Then, output from the speakers 17a and 17b is started (step S97), the communication interface determination process at the time of previous power-off is terminated, and the process returns to the main process.

  If the control unit 4 determines that the sound data transmitted by A2DP and AVRCP is not output immediately before the previous apparatus power is turned off ("NO" in step S95), the sound data is transmitted by another communication interface. Is determined (step S98). If it is determined that the sound data has been output by the other communication interface (“YES” in step S98), the control unit 4 starts outputting the sound data from the speakers 17a and 17b by the other communication interface (step S99). ), The communication interface determination process at the previous power-off is terminated, and the process returns to the main process.

  In the series of processes described above, after determining which communication interface was transmitting sound data immediately before the previous apparatus power was turned off, the sound data was transmitted immediately before the previous apparatus power was turned off. By connecting the same communication interface as the communication interface, it is not necessary to determine which model the mobile phone 3 that is the data communication partner of the in-vehicle device 2 corresponds to. Regardless of the model of the mobile phone 3, sound data can be appropriately transmitted from the mobile phone 3.

  As described above, according to the present embodiment, in the in-vehicle device 2, when sound data is transmitted from the mobile phone 3 through the USB communication line, the mobile phone 3 can transmit the sound data through the USB communication line. As described above, when the connection and disconnection of the USB communication line, A2DP and AVRCP are controlled, and when the sound data is transmitted from the mobile phone 3 by A2DP and AVRCP, the mobile phone 3 can transmit the sound data by A2DP and AVRCP. Since the connection and disconnection of the USB communication line, A2DP and AVRCP are controlled so that the mobile phone 3 is simultaneously connected to the USB communication line and A2DP and AVRCP, the sound data is appropriately Even if it is a specification that does not transmit, it is possible to properly transmit sound data from the mobile phone 3 .

  That is, the A2DP and AVRCP are connected after the USB communication line is connected first, and the mobile phone 3 that is the data communication partner of the in-vehicle device 2 is the specific model of the later priority, immediately before the previous device power is turned off. If the sound data transmitted through the USB communication line is being output, the connection of the USB communication line that is the communication interface that was connected first is continued, and the communication interface that is connected later is A2DP and AVRCP. Since the connection is disconnected, the transmission of the sound data is started by the USB communication line that is the same communication interface as the communication interface that has transmitted the sound data immediately before the apparatus power is turned off the last time, and output from the speakers 17a and 17b. Can start.

  In addition, the A2DP and AVRCP are connected after the USB communication line is connected first, and the mobile phone 3 that is the data communication partner of the in-vehicle device 2 is the specific model with the first priority, immediately before the previous device power is turned off. If the sound data transmitted by A2DP and AVRCP is output, the connection of A2DP and AVRCP which are communication interfaces connected later is continued, and the USB communication line which is the communication interface connected first is connected. Since the connection is disconnected, the transmission of the sound data is started by A2DP and AVRCP which are the same communication interfaces as the communication interface that was transmitting the sound data immediately before the apparatus power was turned off the last time, and the output from the speakers 17a and 17b. Can start.

The present invention is not limited to the above-described embodiment, and can be modified or expanded as follows.
The short-range wireless communication device is not limited to the in-vehicle device 2 and may be a navigation device or the like having a known navigation function as long as it has a BT module having a function equivalent to that of the BT module 5. It may be a device that is not mounted on. In addition, the communication partner device that is a data communication partner of the short-range wireless communication device is not limited to the mobile phone 3 and may be a portable information terminal or the like as long as it has a BT module having the same function as the BT module 24. Alternatively, it may be a fixed terminal that cannot be carried by the user.

  Not only when two communication interfaces are connected at the same time, but also when three or more communication interfaces are connected simultaneously, the communication interface is also selected according to the type of mobile phone 3 that is the data communication partner of the in-vehicle device 2. Connection and disconnection may be controlled. That is, in the above-described embodiment, the case where the communication interface is two of the USB communication line and A2DP and AVRCP has been described. However, the case where the communication interface is three of the USB communication line, A2DP, AVRCP, and WiFi, for example. If there is, control may be performed as follows. For example, in the situation where the model of the mobile phone 3 that is the data communication partner of the in-vehicle device 2 is a specific model with a later priority and is connected in the order of the USB communication line, A2DP, AVRCP, and WiFi, output of sound data via the USB communication line If a start request is generated, A2DP, AVRCP, and WiFi are disconnected. If a sound data output start request is generated by A2DP and AVRCP, a USB communication line and WiFi are disconnected, and WiFi sound data is output. If an output start request is generated, the connection can be continued as it is.

  In the in-vehicle device 2, the type of the communication partner device can be stored, and the identification information notified from the communication partner device when the BT communication line or the USB communication line is connected to the communication partner device is stored. After connecting the next BT communication line or USB communication line, the type of the communication partner apparatus may be specified based on the stored identification information.

  In the drawings, 2 is an in-vehicle device (short-range wireless communication device), 3 is a mobile phone (communication partner device), 4 is a control unit (control means), 5 is a BT module (connection means), and 6 is a USB module (connection means). ), 17a, 17b are speakers (sound data output means).

Claims (9)

A plurality of communication interfaces capable of simultaneously connecting a plurality of communication interfaces with a communication partner device, and a plurality of connection means for transferring sound data from the communication partner device via the communication interface;
Control means for selectively outputting from the sound data output means the sound data transferred to any of the plurality of connection means by any one of the plurality of communication interfaces from the communication partner device;
When the control means determines that a sound data output start request is generated by one of the plurality of communication interfaces in a state where the plurality of communication interfaces are communicably connected, the control means The other communication interfaces except for the one communication interface are disconnected from among the plurality of communication interfaces, and the sound data transferred from the communication counterpart device through the one communication interface is A short-range wireless communication apparatus that outputs the sound data from the sound data output means. The short-range wireless communication device according to claim 1,
When the control means determines that a sound data output start request is generated by one of the plurality of communication interfaces in a state where the plurality of communication interfaces are communicably connected, the control means The sound data transferred from the communication counterpart device through the one communication interface by disconnecting all other communication interfaces except the one communication interface among the plurality of communication interfaces while maintaining the connection of the communication interface Is output from the sound data output means. In the short-range wireless communication device according to claim 1 or 2,
The control means determines that a sound data output start request is generated by one of the plurality of communication interfaces connected last in a state where the plurality of communication interfaces are communicably connected. In this case, while maintaining the connection of the one communication interface, the other communication interfaces other than the one communication interface are disconnected from the plurality of communication interfaces, and transferred from the communication partner apparatus by the one communication interface. The near field communication apparatus characterized in that the sound data is output from the sound data output means. The short-range wireless communication device according to claim 3,
The control means disconnects the other communication interfaces other than the one communication interface from the plurality of communication interfaces, and then reconnects the disconnected other communication interfaces. Communication device. In the short-range wireless communication device according to claim 3 or 4,
When the control means determines that an output start request for sound data by the other communication interface has occurred after disconnecting other communication interfaces other than the one communication interface among the plurality of communication interfaces, When the other communication interface is connected, the short-range wireless communication apparatus disconnects and reconnects the other communication interface. In the short-range wireless communication device according to claim 3 or 4,
When the control means determines that an output start request for sound data by the other communication interface has occurred after disconnecting other communication interfaces other than the one communication interface among the plurality of communication interfaces, When the other communication interface is not connected, the short-range wireless communication apparatus reconnects the other communication interface. In the short-range wireless communication device according to claim 1 or 2,
The control means determines that a sound data output start request has been generated by one of the plurality of communication interfaces connected first in a state where the plurality of communication interfaces are communicably connected. In this case, while maintaining the connection of the one communication interface, the other communication interfaces other than the one communication interface are disconnected from the plurality of communication interfaces, and transferred from the communication partner apparatus by the one communication interface. The near field communication apparatus characterized in that the sound data is output from the sound data output means. The short-range wireless communication device according to claim 7,
When the control means determines that an output start request for sound data by the other communication interface has occurred after disconnecting other communication interfaces other than the one communication interface among the plurality of communication interfaces, A short-range wireless communication apparatus, wherein after disconnecting all communication interfaces including the one communication interface, the other communication interfaces are reconnected. A plurality of communication interfaces capable of simultaneously connecting a plurality of communication interfaces with a communication partner device, and a plurality of connection means for transferring sound data from the communication partner device via the communication interface;
Control means for selectively outputting from the sound data output means the sound data transferred to any of the plurality of connection means by any one of the plurality of communication interfaces from the communication partner device;
The control means determines that a sound data output start request is generated by the one communication interface in a state where other communication interfaces other than the one communication interface are communicably connected among the plurality of communication interfaces. In this case, after the other communication interface is disconnected, the one communication interface is connected, and the sound data transferred from the communication counterpart device through the one communication interface is output from the sound data output means. A short-range wireless communication device.

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