JP2015002394A - Information processing apparatus and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a "information processing apparatus and computer program" capable of correctly transferring audio data outputted from a voice-operated mobile device.SOLUTION: When a voice operation request is generated from a user (41), A2DP connection for audio data stream transfer and AVRCP connection for control information transfer relating to audio reproduction are switched to a mobile device A to be voice-operated (43, 44) speaking voices of a user are transferred to the mobile device A via HFP connection for voice operation, and mobile device A is voice-operated (45, 46). In accordance with control information (53) transferred by AVRCP connection, it is determined whether a source to be reproduced by the mobile device A is changed by the voice operation (54) and if changed, a state of A2DP connection and AVRCP connection is maintained but if not changed, the state of A2DP connection and AVRCP connection is returned to a state before the generation of the voice operation request.

Description

  The present invention relates to a technique for performing voice operation on a mobile device connected to the information processing apparatus in the information processing apparatus.

A technique for reproducing and outputting an audio data stream transferred from a mobile device according to A2DP (Advanced Audio Distribution Profile), which is a profile of the Bluetooth (registered trademark) standard, is known in an information processing device (for example, Patent Document 1). .
In addition, a technology is also known in which a mobile device having a function of playing music receives a voice operation by a user's uttered voice and plays the music specified by the voice (for example, Patent Document 2).

JP 2013-012011 A JP 2010-156986 A

  Now, when a voice is transmitted from an information processing device to a mobile device having a function of receiving and operating a voice operation, and the mobile device is voice-operated by the transmitted voice, the mobile device can execute a command or voice related to voice operation. The first communication channel, which is a communication channel used for transmitting / receiving information, is different from the second communication channel, which is a communication channel used for transmitting / receiving information such as an audio data stream that the mobile device starts outputting as a result of voice operation. In the case of the communication channel, since it is not guaranteed that the mobile device connected by the first communication channel is also connected by the second communication channel, the following problem occurs.

  That is, for example, when the user instructs the information processing device to reproduce the desired music stored in the mobile device, the mobile device performs information processing when the user instructs the reproduction of the music by uttered voice. When the apparatus is connected to both the first communication channel and the second communication channel, the information processing apparatus performs voice operation on the mobile device by transferring speech voice or the like on the first communication channel. Thus, the transmission of the audio data stream of the music on the second communication channel can be started, the audio data stream transmitted on the second communication channel can be received, and the audio data stream can be reproduced and output. However, when the mobile device is connected to the information processing device only through the first communication channel and not connected through the second communication channel, the information processing device cannot receive the audio data stream, and therefore Thus, the audio data stream of the music that is instructed to be played by voice operation cannot be played back and output by the information processing apparatus.

  Note that the situation where such an information processing device is not connected to the mobile device connected via the first communication channel via the second communication channel is the second communication channel conforming to the standard followed by the second communication channel. Even if the automatic connection function is defined, the number of mobile devices that can be connected through the second communication channel is limited, and the mobile device is different from the mobile device that performs voice operation using the first communication channel. This may occur when the apparatus and the information processing apparatus are connected via the second communication channel.

  Therefore, the present invention guarantees reception in the information processing device using the second communication channel of information output as a result of the voice operation by the mobile device that performs voice operation from the information processing device via the first communication channel. The task is to do.

  In order to achieve the above object, according to the present invention, the first type communication channel connects data for voice operation of an external device to which the first type communication channel is connected via the first type communication channel. An information processing apparatus that transmits / receives an audio data stream from / to an external apparatus connected to the second type communication channel and receives and reproduces an audio data stream from the external apparatus connected to the second type communication channel. When a voice operation request is generated from the user, the voice uttered by the user is used as the voice operation data, and the first type communication channel is connected to the outside through the first type communication channel. A voice operation data transmitting means for transmitting to the device and an external device to which the second type communication channel is connected when the user requests voice operation. Is provided with a communication channel connection switching means for performing switching processing for switching the device.

According to such an information processing device, when the information processing device performs voice operation on the external device connected to the first type communication channel using the first type communication channel, the second type communication channel is always used. However, the external device and the information processing device are connected.
Thus, for example, when a music operation is performed on the external device connected to the first type communication channel from the information processing device, the external device starts playback according to the voice operation in the information processing device. The audio data stream of the music can be received via the second type communication channel with the external device, and can be reproduced and output.

Note that the information processing apparatus described above may receive information other than the audio data stream through the second type communication channel.
Here, in such an information processing apparatus, after the switching process is performed, the occurrence of a change in the audio data stream received through the second type communication channel is monitored, and the change is detected within a predetermined period. It is preferable to provide a communication channel connection return means for returning the connection state of the second type communication channel to the state before the switching process is performed when it does not occur. That is, more specifically, for example, in the communication channel connection switching means, in the switching process, an external device that connects the third type communication channel is changed to an external device to which the first type communication channel is connected. Switching, the communication channel connection return means detects a change in the audio data stream received in the second type communication channel based on a change in the identification information of the audio data stream received through the third type communication channel. You may do it.

In this way, when the voice operation performed from the information processing apparatus is not related to the reproduction of the audio data stream, the connection state of the second type communication channel is unnecessarily changed. Can be deterred.
Here, in the information processing apparatus described above, as the first type communication channel, a communication channel for performing Bluetooth (registered trademark) standard HFP (Hands-Free Profile) communication can be used. As a communication channel, a communication channel for performing Bluetooth (registered trademark) standard A2DP (Advanced Audio Distribution Profile) communication can be used. As the third type of communication channel, Bluetooth (registered trademark) standard AVRCP ( A communication channel for performing communication of (Audio / Video Remote Control Profile) can be used.

  Note that the information processing apparatus described above may be an apparatus mounted on an automobile, and the external apparatus may be a mobile apparatus.

  As described above, according to the present invention, information processing using the second communication channel of information output as a result of the voice operation by the mobile device that performs voice operation from the information processing device via the first communication channel. Reception at the device can be guaranteed.

It is a block diagram which shows the structure of the vehicle-mounted apparatus which concerns on embodiment of this invention. It is a block diagram which shows the structure of the mobile apparatus which concerns on embodiment of this invention. It is a flowchart showing the voice operation control process which concerns on embodiment of this invention. It is a figure which shows the process example of the audio | voice operation control process which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described taking application to an in-vehicle device that is an information processing device mounted on an automobile as an example.
In FIG. 1, the structure of the vehicle-mounted apparatus which concerns on this 1st Embodiment is shown.
As shown in the drawing, the in-vehicle device 1 is a device mounted on an automobile, and as shown in the drawing, an input device 11, a display device 12, a voice input / output device 13 having a microphone, a speaker, and the like, and a recording such as a CD or a DVD. A disk drive 14 that reproduces a disk, a storage device 15, other peripheral devices 16 such as broadcast receivers, an H-operating system 17 that is an OS of the in-vehicle device 1, and an H-operating system managed by the H-operating system 17 An H-AP and a BT module 18 which are applications running on the system 17 are provided.

In the H-operating system 17 of the in-vehicle device 1, the upper BT stack 171 and the voice operation control unit 172 are mounted.
Here, the BT module 18 of the in-vehicle device 1 is a Bluetooth module in the Bluetooth (registered trademark) standard that performs processing of a lower stack of the Bluetooth (registered trademark) standard, and controls wireless connection with the mobile device 2. Perform processing. The mobile device 2 is a device carried by the user, such as a smartphone or a tablet device.

  Further, the upper BT stack 171 of the H-operating system 17 of the in-vehicle device 1 performs processing of a stack lower than the application layer in the Bluetooth (registered trademark) standard. The BT module 18 and the upper BT stack 171 realize protocols / functions defined by various profiles of the Bluetooth (registered trademark) standard.

The in-vehicle device 1 includes a media player application 111, an HFT control application 112, and other H-APs 113 as the above-described H-APs.
However, the in-vehicle device 1 is configured using a computer having a CPU, a memory, and the like in hardware. The H-operating system 17 and the H-AP are stored in a storage device. This is realized by executing a predetermined computer program stored in the memory 15.

Next, FIG. 2 shows a configuration of the mobile device 2.
As shown in the figure, the mobile device 2 includes an operation unit 21, a display 22, a voice input / output unit 23 having a microphone, a speaker, and the like, a mobile communication device 24 for accessing a mobile telephone network, and a storage unit. 25, the other peripheral device 26, the M-operating system 27 that is the OS of the mobile device 2, the M-AP that is managed by the M-operating system 27 and runs on the M-operating system 27, and the BT module 28 And.

The M-operating system 27 of the mobile device 2 includes an upper BT stack 271.
In addition, the mobile device 2 is recorded in the recording unit as a mobile phone application 211 that provides a mobile phone function using the mobile communication device 24, the voice input / output unit 23, and the operation unit 21 as the M-AP described above. Audio input from the voice input / output unit 23 by accessing the player application 212 that controls playback of the audio content to the voice input / output unit 23 and the voice recognition server 3 that provides the voice recognition service via the mobile communication device 24. And a voice recognition client application 213 for controlling the operation of the M-operating system 27 and M-AP according to the recognized voice content, and other M-AP 214. However, the mobile device 2 connected to the in-vehicle device 1 may include a mobile device 2 that does not include the voice recognition client application 213.

  Note that the mobile device 2 is configured using a computer having a CPU, a memory, and the like in hardware. The M-operating system 27, the M-AP, and the like are stored in the storage unit. This is realized by executing a predetermined computer program stored in 25.

  The upper BT stack 171 of the in-vehicle device 1 and the upper BT stack 271 of the mobile device 2 are arranged between the HFT control application 112 of the in-vehicle device 1 and the mobile phone application 211 of the mobile device 2 between HFP (Hands-Free Profile). ) To establish an HFP connection (channel) that is used for call voice transfer, call control, and call status notification.

In addition, the upper BT stack 171 of the in-vehicle device 1 and the upper BT stack 271 of the mobile device 2 are connected between the voice operation control unit 172 of the in-vehicle device 1 and the voice recognition client application 213 of the mobile device 2 by an HFP connection (channel ).
Further, the upper BT stack 171 of the in-vehicle device 1 and the upper BT stack 271 of the mobile device 2 are A2DP connections used for transferring an audio data stream from the player application 212 to the media player application 111 in accordance with A2DP (Advanced Audio Distribution Profile). (Channel) is established.

  Further, the upper BT stack 171 of the in-vehicle device 1 and the upper BT stack 271 of the mobile device 2 are connected between the media player application 111 of the in-vehicle device 1 and the player application 212 of the mobile device 2, with AVRCP (Audio / Video Remote Control). According to (Profile), an AVRCP connection (channel) used to remotely control the operation of the player application 212 from the media player application 111 is established.

  In such a configuration, the media player application 111 of the in-vehicle device 1 controls the output of the broadcast received by the broadcast receiver to the audio input / output device 13 and the display device 12, and is attached to the recording device or the disk drive 14. Established between the audio input / output device 13 of the audio content and video content recorded on the recorded recording disk and the playback output to the display device 12, and the player application 212 of the mobile device 2 connected to the BT module 18. Processing for remotely controlling the operation of the player application 212 of the mobile device 2 via the AVRCP connection, or the player application of the mobile device 2 through the A2DP connection established with the player application 212 of the mobile device 2 connected to the BT module 18 212 transferred from 212 The audio data streams and it operates to output to the audio input and output device 13.

Here, the player application 212 of the mobile device 2 performs the playback operation of the audio content according to the remote control through the AVRCP connection, and transfers the audio data stream of the audio content played back through the A2DP connection.
Further, the HFT control application 112 of the in-vehicle device 1 controls the mobile phone application 211 of the mobile device 2 through an HFP connection established with the mobile phone application 211 of the mobile device 2 connected to the BT module 18. Then, the voice input / output device 13 of the in-vehicle device 1 is used for input / output of call voice, and the hands-free call function which is a mobile phone function using the mobile communication device 24 of the mobile device 2 for mobile communication is provided to the user.

  Here, the mobile phone application 211 of the mobile device 2 controls operations such as calling / response of the mobile communication device 24 according to the control via the HFP connection, or the incoming call to the mobile communication device 24 via the HFP connection. Such as a process of notifying the state of a call such as, transmitting a call voice transferred via the HFP connection to the mobile communication device 24, or transferring a call voice received by the mobile communication device 24 via the HFP connection. Do.

Hereinafter, a voice operation control process performed by the voice operation control unit 172 of the in-vehicle device 1 for voice operation of the mobile device 2 connected to the BT module 18 will be described.
FIG. 3 shows the procedure of the voice operation control process.
As shown in the figure, the voice operation control unit 172 of the in-vehicle device 1 checks whether there is a voice operation target mobile device when a voice operation request is generated by a predetermined operation of the user's input device 11 (step 302) (step 302). 304).
Here, the voice operation target mobile device is the mobile device 2 including the voice recognition client application 213 in which the HFP connection with the voice operation control unit 172 is established. Note that the number of voice recognition client applications 213 that can establish an HFP connection with the voice operation control unit 172 is limited to one.

If there is no voice operation target mobile device (step 304), a predetermined error display representing a message indicating that the mobile device 2 capable of voice operation is not connected is displayed on the display device 12 (step 306). The processing returns from step 302.
On the other hand, if there is a voice operation target mobile device, voice operation processing is started (step 308).
Here, the voice operation processing refers to the user's speech input from the voice input / output device 13 after issuing a voice operation start command using the HFP connection to the voice recognition client application 213 of the voice operation target mobile device. The response voice transferred from the voice recognition client application 213 of the voice operation target mobile device using the HFP connection is transferred from the voice input / output device 13 to the voice recognition client application 213 of the voice operation target mobile device using the connection. This is the process of outputting and completing.

  Here, when the voice recognition client application 213 of the mobile device 2 receives the voice operation start command via the HFP connection, the voice recognition client application 213 accesses the voice recognition server 3 that provides the voice recognition service via the mobile communication device 24 and connects to the HFP. The voice transferred through the connection is recognized, the response voice corresponding to the recognized voice content is transferred via the HFP connection, and the M-operating system 27 and the M-AP Control the behavior.

  Next, when such a voice operation process is started (step 308), whether or not an A2DP connection and an AVRCP connection are established with the voice operation target mobile device is notified to the upper BT stack 171 by the A2DP. The state of the connection and the AVRCP connection is examined by inquiring (step 310), and if established, the completion of the voice operation process described above is waited (step 312), and the process returns to step 302.

  On the other hand, when the A2DP connection and the AVRCP connection are not established with the voice operation target mobile device (step 310), the current state of the A2DP connection and the AVRCP connection, that is, the A2DP connection with any device and Whether the AVRCP connection has been established is stored as a pre-process start state (step 314), and the upper BT stack 171 starts processing for establishing an A2DP connection and an AVRCP connection with the voice operation target mobile device (step 316). ).

  Here, the upper BT stack 171 that has started the process of establishing the A2DP connection and the AVRCP connection with the voice operation target mobile device disconnects the current A2DP connection and the AVRCP connection, and performs processing such as pairing as necessary. To establish an A2DP connection and an AVRCP connection with the voice operation target mobile device, and complete the establishment process of the A2DP connection and the AVRCP connection.

  Next, if the upper BT stack 171 is started to establish A2DP connection and AVRCP connection as described above (step 316), between the completion of the voice operation process described above and the voice operation target mobile device. After completion of the A2DP connection and AVRCP connection establishment processing (step 318), a timer having a predetermined timeout time is started (step 320), and the source switching of the voice operation target mobile device occurs (step 322). ) And the occurrence of a timer timeout is monitored (step 324).

  Here, switching the source of the voice operation target mobile device refers to a change in the audio content played by the player application 212 of the voice operation target mobile device, and a change in the audio content played by the player application 212 of the voice operation target mobile device. Is a change in the identification information (song information) of the audio data stream such as a song name transmitted from the player application 212 of the voice operation target mobile device via the AVRCP connection, and the audio is sent via the upper BT stack 171 and the media player application 111. It is detected by the operation control unit 172.

  Here, the occurrence of the source switching in the voice operation target mobile device indicates that the playback operation of the player application 212 of the voice operation target mobile device is operated by the voice operation by the voice operation processing described above. . Therefore, in this case, since the user intends to listen to the audio content reproduced by the player application 212, the audio that is reproduced by the player application 212 and transferred to the media player application 111 of the in-vehicle device 1 via A2DP. It is appropriate to output the data stream from the voice input / output device 13 of the in-vehicle device 1.

Therefore, when the source of the voice operation target mobile device is switched (step 322), the process returns to step 302 while maintaining the A2DP connection and the AVRCP connection with the voice operation target mobile device.
On the other hand, when a time-out occurs (step 324), it means that the playback operation of the player of the mobile device subject to the voice operation is not operated by the voice operation, so that the 2DP connection and the AVRCP connection are connected to the upper BT stack 171. The state is returned to the pre-processing start state stored in step 314 (step 326), and the processing returns to step 302.

The voice operation control process performed by the voice operation control unit 172 of the in-vehicle device 1 has been described above.
The voice operation control unit 172 that performs such voice operation control processing is not implemented in the H operating system 16 but is provided in the in-vehicle device 1 as an application (H-AP) that runs on the H operating system 16. It may be a thing.
Here, FIG. 4 shows an operation example of the voice operation by the voice operation control process as described above.
Now, the mobile device A and the mobile device B are wirelessly connected to the BT module 18 of the in-vehicle device 1, and the HFP connection is established between the in-vehicle device 1 and the voice recognition client application 213 provided in the mobile device A. Assume that the mobile device A is set as a voice operation target mobile device. Further, it is assumed that an A2DP connection and an AVRCP connection are not established between the in-vehicle device 1 and the mobile device A, and an A2DP connection and an AVRCP connection are established between the in-vehicle device 1 and the mobile device B. .

  In this case, when a user's voice operation request is generated (41), the voice operation request is issued from the in-vehicle device 1 to the mobile device A via the HFP connection (42). The in-vehicle device 1 disconnects the A2DP connection and the AVRCP connection with the mobile device B (43), and starts processing for establishing the A2DP connection and the AVRCP connection with the mobile device A (44).

  On the other hand, the utterance voice (45) uttered after the user makes a voice operation request (for example, “song music X”) is sent to the mobile device A via the HFP connection (46), and the voice recognition request is made. The receiving mobile device A sends the received uttered voice to the voice recognition server 3 (47), and obtains the voice recognition result of the uttered voice (49).

Then, the mobile device A transmits a response voice (50) corresponding to the voice recognition result (for example, “play music X”) to the in-vehicle device 1 via the HFP connection, and receives the response voice. 1 outputs a response voice to the user (51).
In addition, when the in-vehicle device 1 completes the reception of the response voice (50) and the establishment of the A2DP connection and the AVRCP connection (48) with the mobile device A, the in-vehicle device 1 establishes the mobile device A via the AVRCP connection. Monitor source switching.
On the other hand, the mobile device 2 that has obtained the speech recognition result of the uttered speech performs an operation according to the speech recognition result (for example, start of reproduction of “Song X”) (52), and the audio data that is the output target in the operation As the audio data stream to be transferred through the A2DP connection, the identification information (for example, “music X”) of the audio data stream to be transferred through the A2DP connection is notified to the in-vehicle device 1 via the AVRCP connection (53). The transfer of the audio data stream to the in-vehicle device 1 via the A2DP connection is started (55).

On the other hand, the in-vehicle device 1 detects the switching of the source of the mobile device A from the notification of the identification information of the audio data stream received through the AVRCP connection (54), and establishes the A2DP connection and the AVRCP connection with the mobile device A. maintain.
Then, the in-vehicle device 1 to which the audio data stream is transferred through the A2DP connection maintained in this way reproduces and outputs the audio data stream to the user (56).
The embodiment of the present invention has been described above.
As described above, according to the present embodiment, when the in-vehicle device 1 performs voice operation of the mobile device 2 using the HFP connection, the A2DP connection and the AVRCP connection with the mobile device 2 that performs voice operation are always established. It becomes.
Thus, for example, when the music playback on the mobile device 2 is voice-operated from the in-vehicle device 1, the in-vehicle device 1 connects the audio data stream of the music that the mobile device 2 has started playback according to the voice operation to the A2DP connection. Can be received and reproduced and output.

  In addition, when the identification information of the audio data stream transferred by the voice operated mobile device 2 is not changed by the voice operation, the state of the A2DP connection and the AVRCP connection is restored. When the second voice operation is not related to the reproduction of the audio data stream, it is possible to prevent the A2DP connection and the AVRCP connection from being changed unnecessarily.

  In the above embodiment, when the in-vehicle device 1 performs voice operation on the mobile device 2, the connection to switch to the mobile device 2 that performs voice operation is transferred by these A2DP connection and AVRCP connection other than the A2DP connection and AVRCP connection. The present invention can be applied by being replaced with another connection (channel) used for transferring information different from information.

Further, instead of the HFP connection, a connection according to another standard can be used for voice operation of the mobile device 2 from the in-vehicle device 1.
Further, the application to the in-vehicle device 1 has been described above as an example, but the above embodiment can be similarly applied to any information processing device other than the in-vehicle device 1.
Also,

  DESCRIPTION OF SYMBOLS 1 ... In-vehicle device, 2 ... Mobile device, 3 ... Voice recognition server, 11 ... Input device, 12 ... Display device, 13 ... Voice input / output device, 14 ... Disk drive, 15 ... Storage device, 16 ... Peripheral device, 17 ... H-operating system, 18 ... BT module, 21 ... operating unit, 22 ... display, 23 ... voice input / output unit, 24 ... mobile communication device, 25 ... storage unit, 26 ... peripheral device, 27 ... M-operating system, 28 ... BT module, 111 ... Media player application, 112 ... HFT control application, 171 ... Upper BT stack, 172 ... Voice operation controller, 211 ... Mobile phone application, 212 ... Player application, 213 ... Voice recognition client application, 271 ... Upper BT stack.

Claims (9)

Data for voice operation of the external device connected to the first type communication channel is transmitted / received to / from the external device connected to the first type communication channel via the first type communication channel. An information processing apparatus that receives and reproduces an audio data stream from an external apparatus connected to the second type communication channel using the second type communication channel;
External device to which the first type of communication channel is connected via the first type of communication channel using the voice spoken by the user as the voice operation data when a voice operation request is made by the user Voice operation data transmission means for transmitting to
Communication channel connection switching means for performing a switching process for switching an external device connected to the second type of communication channel to an external device connected to the first type of communication channel when a voice operation request is generated from the user And an information processing apparatus. The information processing apparatus according to claim 1,
After the switching process is performed, the occurrence of a change in the audio data stream received by the second type communication channel is monitored, and if no change occurs within a predetermined period, the second type communication channel An information processing apparatus comprising communication channel connection return means for returning the connection state to a state before the switching process is performed. An information processing apparatus according to claim 2,
The communication channel connection switching means switches, in the switching process, an external device that connects a third type communication channel to an external device to which the first type communication channel is connected,
The communication channel connection return means is
An information processing apparatus for detecting a change in an audio data stream received through the second type of communication channel based on a change in identification information of the audio data stream received through the third type of communication channel. The information processing apparatus according to claim 1, 2, or 3,
The first type communication channel is a communication channel that performs Bluetooth (registered trademark) standard HFP (Hands-Free Profile) communication, and the second type communication channel is a Bluetooth (registered trademark) standard A2DP (Advanced trademark). An information processing apparatus that is a communication channel for performing communication of (Audio Distribution Profile). An information processing apparatus according to claim 3,
The first type communication channel is a communication channel that performs Bluetooth (registered trademark) standard HFP (Hands-Free Profile) communication, and the second type communication channel is a Bluetooth (registered trademark) standard A2DP (Advanced trademark). (Audio Distribution Profile) communication, and the third type communication channel is a communication channel for performing Bluetooth (registered trademark) standard AVRCP (Audio / Video Remote Control Profile) communication. Information processing apparatus. The information processing apparatus according to claim 1, 2, 3, 4 or 5,
The information processing apparatus is an apparatus mounted on an automobile,
The information processing apparatus, wherein the external device is a mobile device. Data for voice operation of the external device connected to the first type communication channel is transmitted / received to / from the external device connected to the first type communication channel via the first type communication channel. A computer program that is read and executed by a computer that receives and processes information from an external device to which the second type communication channel is connected using the second type communication channel,
The computer program stores the computer,
External device to which the first type of communication channel is connected via the first type of communication channel using the voice spoken by the user as the voice operation data when a voice operation request is made by the user Voice operation data transmission means for transmitting to
Communication channel connection switching means for performing a switching process for switching an external device connected to the second type of communication channel to an external device connected to the first type of communication channel when a voice operation request is generated from the user A computer program that functions as a computer program. A computer program according to claim 7,
The information is an audio data stream, and the computer program
Said computer further
After the switching process is performed, the occurrence of a change in the audio data stream received by the second type communication channel is monitored, and if no change occurs within a predetermined period, the second type communication channel A computer program for causing a connection state of the communication channel connection to return to a state before the switching process is performed. A computer program according to claim 8,
The first type communication channel is a communication channel according to HFP (Hands-Free Profile) in the Bluetooth (registered trademark) standard, and the second type communication channel is A2DP (Advanced Audio in the Bluetooth (registered trademark) standard. A computer program characterized by being a communication channel according to (Distribution Profile).