JP2006254148A - Handsfree system, mobile phone, and in-vehicle device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To protect the deterioration in usability of a mobile phone, by applying to an in-vehicle system mounted in a car navigation device, for example, when many devices, consisting of a handsfree system, are mounted in the vehicle. <P>SOLUTION: The handsfree system comprises a mobile phone and a voice input/output part for inputting/outputting sounds, and a plurality of devices capable of transmitting and receiving the voice data concerning the voice input/output part between the mobile phones. The system receives the setup of priority which indicates the connection priorities, in advance, and selects one of the plurality of the devices according to the priority so as to set up the voice transmission and reception via the selected device between the mobile phone and an object to be communicated. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hands-free system, a mobile phone, and an in-vehicle device, and can be applied to, for example, a vehicle system equipped with a car navigation device. According to the present invention, by selecting a device that inputs / outputs voice according to priority and using it for a call, even when a large number of devices forming a hands-free system are brought into the vehicle, the usability of the mobile phone is deteriorated. To be able to prevent.

  2. Description of the Related Art Conventionally, a mobile phone can make a call even if it is not held by hand by using a headset, and thereby a hands-free system can be formed using the headset. Regarding such a cellular phone, Japanese Utility Model Registration No. 2555785 proposes a method of muting a voice output by incoming call in a car audio device. Further, as a portable device such as a cellular phone, a portable audio player has been conventionally provided, and the portable audio player is configured to listen to music through headphones.

  By the way, in recent years, for example, a data communication method for transmitting and receiving various data between devices has been proposed, such as Bluetooth, and such data communication is also used in a car audio device, a mobile phone, and a portable audio player. It is thought that usability can be improved by applying the method.

  That is, in this case, for example, by transferring the content data stored in the car audio device to a portable audio player, the various contents of the car audio device can be transferred to the portable audio player without disturbing other passengers. It is thought that it can be enjoyed by the player. Similarly, it is considered that various contents of the car audio device can be enjoyed by using the headset of the mobile phone without disturbing other passengers.

  As for the cellular phone, if voice data can be transmitted and received between the headphone of the portable audio player and the cellular phone, the cellular phone can be used to make a phone call via the portable audio player. On the other hand, it is considered that the content of the car audio device can be auditioned with the headset of the mobile phone, and further the content of the portable audio player can be auditioned. Thus, in these cases, a hands-free system can be configured by a portable audio player.

However, in such a situation, there are cases where a large number of devices forming the hands-free system are brought into the vehicle. In this case, the mobile phone may be unusable. That is, when making a call, a case may occur in which the headset of the mobile phone needs to be reattached instead of the headset of the device used so far.
Utility Model Registration No. 2555785

  The present invention has been made in consideration of the above points, and even when a large number of devices forming the hands-free system are brought into the vehicle, the hands-free system and the mobile It intends to propose a telephone and an in-vehicle device.

  In order to solve this problem, in the first aspect of the present invention, the mobile phone has a voice input / output unit for inputting / outputting voice and can transmit / receive voice data related to the voice input / output unit to / from the mobile phone In a hands-free system having a plurality of devices, a priority setting indicating a connection priority is received in advance, one of the plurality of devices is selected according to the priority, and the selected device is The mobile phone is set to send and receive voice to and from the call target.

  According to a second aspect of the present invention, the present invention is applied to a mobile phone and accepts a priority setting indicating a connection priority in advance, and selects one of the plurality of external devices in accordance with the priority to perform the communication. The voice data is transmitted / received by the unit, and the voice data is input / output to / from the radio communication unit of the call, so that the external device is selected according to the priority order, and the call is performed using the selected external device. Send and receive audio to and from the subject.

  Further, in the invention of claim 7, when applied to the in-vehicle device, the setting of the priority indicating the priority of connection is accepted in advance, and one of the plurality of devices is selected according to the priority and the selected A setting is made so that voice is transmitted to and received from the call target on the mobile phone via the device.

  According to the configuration of claim 1, in the hands-free system, a priority setting indicating a connection priority is received in advance, and one of the plurality of devices is selected according to the priority, and the selected device is passed through the selected device. If the mobile phone is set to send and receive voice to and from the call target, the call can be made according to this advance setting, and even when a large number of devices that form a hands-free system are brought into the vehicle, it is easy to use. Can be prevented.

  Thus, according to the configurations of claims 2 and 7, even when a large number of devices forming the hands-free system are brought into the vehicle, the mobile phone and the in-vehicle device capable of preventing the usability of the mobile phone can be prevented. Can be provided.

  According to the present invention, even when a large number of devices forming a hands-free system are brought into a vehicle, it is possible to prevent usability deterioration in a mobile phone.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

(1) Configuration of Embodiment 1 FIG. 2 is a schematic diagram showing a hands-free system according to Embodiment 1 of the present invention. This hands-free system 1 is operated by the mobile phone 2 so that when the driver carries the mobile phone 2 and brings it into the vehicle, the mobile phone 2 can make a hands-free call using the car navigation device 3 or the headset device 4. To control.

  For this reason, the car navigation device 3 is provided with a microphone 6 for inputting a voice for a call and a voice for control, and a speaker 7 for outputting a voice for a call and a voice for a guide. In addition, a display unit 8 using a flat display device such as a liquid crystal display panel used for road guidance and an operation unit 9 using various operators are provided.

  The headset device 4 is a type of headset that is hooked and worn on one ear, and is provided with a microphone 11 that acquires sound and a speaker 12 that provides sound so that the headset 4 can be used as a headset of a desired device. . The headset device 4 is provided with an operation unit 13 such as a volume controller, a power switch, and the like, and transmits the sound acquired by the microphone 11 and controls the wireless communication of the master device, acquires sound data, and obtains the speaker 12. Output from.

  FIG. 3 is a block diagram showing the configuration of the headset device 4. This headset device 4 is operated by the power source of the battery 21. In the headset device 4, the echo cancel unit 22 decodes the audio data output from the wireless communication unit 23, then performs digital-analog conversion processing to generate an audio signal, and drives the speaker 12 with the audio signal. The echo cancel unit 22 acquires and amplifies the audio signal from the microphone 11 and then removes the audio signal component output from the speaker 12. Subsequently, the audio signal is converted into audio data by analog-digital conversion processing, and then encoded and output to the wireless communication unit 23.

  The wireless communication unit 23 is a data communication unit by wireless communication such as Bluetooth, receives a control command related to the headset device 4 by data communication with other devices, notifies the headset control unit 24, Also, a response from the headset control unit 24 is transmitted. Also, audio data is received and output to the echo canceling unit 22 under the control of the headset control unit 24. Conversely, audio data output from the echo canceling unit 22 is transmitted. In these processes, the wireless communication unit 23 executes an error correction process, and sends out a retransmission request when the voice data and the control command cannot be correctly received.

  The headset operation unit 25 is formed by an operator such as a sound volume and a power switch provided in the headset device 4.

  The headset control unit 24 is a control unit that controls the operation of the headset device 4. When the power is turned on by operating a power switch provided in the headset operation unit 25, the processing procedure of FIG. 4 is executed. To do. That is, when the power is turned on, the headset control unit 24 proceeds from step SP1 to step SP2, and determines whether or not a connection request from another device is received by the wireless communication unit 23. If a negative result is obtained here, the headset control unit 24 repeats step SP2. Thereby, the headset control unit 24 waits for a connection request from another device when the power is turned on.

  On the other hand, if a positive result is obtained in step SP2, the headset control unit 24 moves from step SP2 to step SP3, and establishes a connection with the device related to this connection request under the control of the wireless communication unit 23. To do. Further, in the subsequent step SP4, it is determined whether or not a connection release request has been obtained from the device that has established this connection. If an affirmative result is obtained here, the process proceeds to step SP5 and the device that has established this connection. After releasing this connection, the process returns to step SP2.

  Accordingly, the headset control unit 24 establishes a connection with this device and releases the established connection under the control of another device. When the connection is established, the sound acquired by the microphone 11 is transmitted to the device related to the connection request, and the sound data from the device is received and output from the speaker 12.

  On the other hand, if a negative result is obtained in step SP4, the headset control unit 24 proceeds from step SP4 to step SP6, confirms the remaining amount of the battery 21 by a power supply circuit (not shown), and further the headset operation unit 25. It is determined whether or not the power switch provided in the is operated. Here, when the remaining amount of the battery 21 is not less than the predetermined value, or when the power switch is not operated, the headset control unit 24 returns from step SP6 to step SP4. On the other hand, when the remaining capacity of the battery 21 is below a certain value or when the power switch is operated, the headset control unit 24 moves from step SP6 to step SP7 and has established a connection so far. Stop sending and receiving audio data with the connected device and release the connection. Further, the power is turned off, and the process proceeds to step SP8 to end this processing procedure.

  Thereby, the headset device 4 transmits and receives voice data to and from the mobile phone 2 or the car navigation device 3 in response to a connection request from the mobile phone 2 or the car navigation device 3 in the hands-free system 1.

  FIG. 5 is a block diagram showing the car navigation device 3. In the car navigation device 3, the echo cancellation unit 31 amplifies the audio signal obtained from the microphone 6, performs analog-digital conversion processing, and outputs audio data based on the processing result to the car navigation block 32. Further, the audio data generated by the car navigation block 32 is subjected to analog-digital conversion processing to generate an audio signal, and the speaker 7 is driven by the audio signal. As a result, the car navigation device 3 can input a destination or the like by voice and can guide the route by voice.

  Further, the echo canceling unit 31 switches its operation under the control of the hands-free control unit 33, decodes the audio data output from the wireless communication unit 34, generates a digital signal by performing digital-analog conversion processing, The speaker 7 is driven. Further, the echo canceling unit 31 acquires and amplifies the audio signal from the microphone 6 and then removes the audio signal component output from the speaker 12. Subsequently, the audio signal is converted into audio data by analog-digital conversion processing, and then encoded and output to the wireless communication unit 23.

  The car navigation block 32 performs a series of processes related to navigation by the operation of the operation unit 9 by analyzing the audio data input from the echo canceling unit 31. Specifically, the car navigation block 32 receives a destination setting, displays a map on the display unit 8 so as to guide the destination, further synthesizes voice data, and outputs the synthesized data to the echo canceling unit 31. . For this reason, in order to enable such processing, the car navigation block 32 is provided with a storage such as a hard disk device or an optical disk device for holding map data, and further, a GPS receiver for detecting the current position, various accelerations. A sensor or the like is provided.

  The wireless communication unit 34 is a data communication unit corresponding to the wireless communication unit 23 of the headset device 4. The wireless communication unit 34 receives a control command or the like related to the car navigation device 3 through data communication with other devices and is hands-free. The control unit 33 is notified, and a response from the hands-free control unit 33 is transmitted. Also, audio data is received and output to the echo canceling unit 31 under the control of the hands-free control unit 33, and on the contrary, the audio data output from the echo canceling unit 31 is transmitted. In these processes, the wireless communication unit 23 executes an error correction process, and sends out a retransmission request when the voice data and the control command cannot be correctly received.

  As a result, the car navigation device 3 can use the microphone 6 for inputting voice instructions and the speaker 7 for providing voice guidance as voice input / output means of various devices provided in the vehicle.

  The hands-free control unit 33 has functions of the microphone 6 and the speaker 7 as a function of voice input / output means of various devices provided in the vehicle and a function of voice input / output means in the car navigation device 3. For example, a microcomputer constituting the wireless communication unit 34, a microcomputer of the car navigation block 32, or the like.

  Here, the hands-free control unit 33 switches the functions of the microphone 6 and the speaker 7 by executing the same processing procedure as described above for the headset control unit 24 of the headset device 4, and relates to the microphone 6 and the speaker 7. Audio data is transmitted to and received from equipment mounted on this vehicle. Accordingly, the hands-free control unit 33 executes the above-described processing procedure of FIG. 4 for the headset control unit 24. However, in the processing of FIG. 4, the hands-free control unit 33 determines only whether or not the power switch is operated in step SP6.

  FIG. 6 is a block diagram showing the configuration of the mobile phone 2. In the cellular phone 2, a high frequency signal processing unit (RF signal processing unit) 41 converts a high frequency signal received by the antenna 42 into an intermediate frequency signal under the control of the control unit 44 and converts it into a baseband signal processing unit (BB signal). The intermediate frequency signal output from the baseband signal processing unit 43 is frequency-converted and transmitted from the antenna 42.

  The baseband signal processing unit 43 performs signal processing on the intermediate frequency signal output from the high-frequency signal processing unit 41 under the control of the control unit 44 to reproduce various data received by the antenna 42, and this data is transmitted to the control unit. 44. Further, after the audio data is decoded from the received data, an analog / digital conversion process is performed to generate an audio signal, and the speaker 45 is driven by the audio signal. The audio signal obtained from the microphone 46 is amplified and converted into audio data, the audio data is encoded and converted into an intermediate frequency signal, and the intermediate frequency signal is output to the high frequency signal processing unit 41. Similarly, the baseband signal processing unit 43 converts the output data of the control unit 44 into an intermediate frequency signal and outputs the intermediate frequency signal to the high frequency signal processing unit 41, thereby performing processing such as link management related to a series of processing such as incoming calls. Execute.

  In this embodiment, the baseband signal processing unit 43 replaces the output of the reproduced audio data from the speaker 45 under the control of the control unit 44 in addition to the processing related to the general configuration of the mobile phone. Audio data is output to the radio communication unit 47, and instead of outputting the audio signal acquired by the microphone 46 to the high frequency signal processing unit 41, the audio data obtained from the radio communication unit 47 is processed by high frequency signal using an intermediate frequency signal. Output to the unit 41.

  The wireless communication unit 47 is data communication means corresponding to the wireless communication unit 23 of the headset device 4, and responds by sending various control commands to the headset device 4 and the car navigation device 3 under the control of the control unit 44. And the baseband signal processing unit 43 transmits and receives audio data.

  Thereby, in this hands-free system 1, voice data can be transmitted to and received from the headset device 4 or the car navigation device 3, and the headset device 4 or the car navigation device 3 can be used as a hands-free system of the mobile phone 2. It is made like that.

  In the process of transmitting and receiving the audio data, the wireless communication unit 47 performs an error correction process and sends a retransmission request as necessary. Also, the audio data or the like is retransmitted in response to a retransmission request from another device. Also, the controller 44 is notified of the transmission of these retransmission requests and the retransmission requests requested from other devices. Thereby, in the hands-free system 1, the control unit 44 can determine the communication state with other devices.

  The control unit 44 is a control unit that controls the operation of the mobile phone 2 and executes a predetermined processing program recorded in a memory (not shown) in response to an operation of an operation element provided in the operation unit 48. In response to an operation by the user, processing such as incoming and outgoing calls is executed. In these processes, the priority setting in the hands-free system 1 is accepted by the user selecting a menu by operating the operation unit 48. Here, the priority order setting is a priority order setting for determining which device's microphone and speaker are used in the hands-free system 1. The control unit 44 records the priority order according to this setting in the memory, and forms a priority order table 49. Further, according to the setting of the priority order table 49, a microphone and a speaker device to be used for a call on the mobile phone 2 are selected.

  Since the mobile phone 2 is carried by a user and may be brought into various vehicles, the priority table 49 is formed for each vehicle, and a call is made by a priority table corresponding to each vehicle. You may make it select the apparatus of the microphone and speaker to provide. In this case, it is conceivable that the vehicle is identified by a device code which is a device identification code provided on the vehicle detected by the wireless communication unit 47, and the priority table 49 is created for each vehicle.

  FIG. 1 is a flowchart showing a processing procedure related to selection of a device related to a microphone and a speaker used for this call. When the start of the call is instructed by the operation of the operation unit 48, the control unit 44 executes a processing procedure related to a series of calls under the control of the baseband signal processing unit 43 and the high frequency signal processing unit 41 to connect the line. Also, this line is cut off when the call ends. When starting the process of line connection, the control unit 44 moves from step SP11 to step SP12, selects the device with the highest priority according to the record in the priority table 49, and in step SP13, the wireless communication unit 47 A connection is established with this device under control. Accordingly, the control unit 44 establishes a connection with the headset device 4 when the headset device 4 is set to the highest priority.

  In addition, although the headset device 4 is set to the highest priority in this way, the power source of the headset device 4 may not be turned on, and the headset device 4 is stored in the trunk room. If the connection is not established with the device set at the highest priority, the control unit 44 selects the subsequent priority device and establishes the connection with the device. . Thereby, in this case, the control unit 44 establishes a connection with the car navigation device 3.

  When such a connection is established, the control unit 44 starts transmission / reception of voice data to / from the device that has established this connection, and controls the overall operation so that the voice data is transmitted / received to / from the call target. To do.

  When a call is started in this way, the control unit 44 determines whether or not stable voice data can be transmitted and received in step SP14. Here, for example, when the connection with the headset device 4 is established, the remaining amount of the battery 21 is reduced in the headset device 4 and the connection is released on the headset device 4 side. Becomes difficult. In some cases, a connection can be established with the headset device 4 stored in the trunk room. In this case, the radio wave condition is significantly deteriorated, and the audio data transmitted to and received from the headset device 4 is transmitted. The quality of the remarkably deteriorates.

  Thereby, in this step SP14, the control unit 44 determines the frequency of retransmission requests obtained from the wireless communication unit 47, the notification of connection release, and if it is determined that transmission / reception of voice data with high quality is difficult, When the remaining battery level is low in the headset device 4, the process proceeds from step SP14 to step SP15, and the priority order table 49 is accessed to detect a subsequent priority order device. In the subsequent step SP16, a connection is established with the subsequent priority device. In the subsequent step SP17, the connection with the device connected so far is released, and the process returns to step SP14. As a result, in the hands-free system 1, when a stable call cannot be made, the device used for the subsequent call is switched to ensure a stable call.

  On the other hand, if the telephone conversation is sufficiently stable, the control unit 44 proceeds from step SP14 to step SP18, determines whether or not to open the connection by blocking the line, and if a positive result is obtained here, After moving to SP19 and releasing the connection under the control of the wireless communication unit 34, the process proceeds to step SP20 and the processing procedure is terminated.

  On the other hand, if a negative result is obtained in step SP18, the process returns to step SP14.

(2) Operation of Example In the above-described configuration, in the hands-free system 1 (FIG. 2), the car navigation device 3 switches the operation according to an instruction by voice using the microphone 6, displays on the display unit 8, and the speaker 7 The user is guided to the destination by voice guidance. In addition, by operating the operation unit 9 provided in the car navigation device 3, voice is input / output by the headset device 4 instead of the microphone 6 and the speaker 7 provided in the car navigation device 3. The operation of 3 is switched, and further the user is guided to the destination.

  In the hands-free system 1, a priority order which is a connection order is set in advance by the user's operation on the mobile phone 2 carried by the user. The navigation device 3 or the headset device 4 is selected, and voice is transmitted / received to / from the call target via the selected device. That is, when the car navigation device 3 is selected according to this priority order, the voice acquired by the microphone 6 of the car navigation device 3 is transmitted to the mobile phone 2 by voice data and transmitted to the call target, and received by the mobile phone 2. The voice signal to be called is transmitted to the car navigation device 3 by voice data and output from the speaker 7. Further, when the headset device 4 is selected according to this priority order, the voice acquired by the microphone 11 of the headset device 4 is transmitted to the mobile phone 2 by voice data and transmitted to the call target, and received by the mobile phone 2. The voice signal to be talked is transmitted to the headset device 4 by voice data and output from the speaker 12.

  Thereby, in this hands-free system 1, it is possible to talk even if the mobile phone 2 is not held by hand, and a hands-free system can be formed using the car navigation device 3 or the headset device 4. In addition, by selecting a device that inputs and outputs audio according to the priority order and using it for a call, it is possible to make a call according to this pre-set, which prevents usability deterioration even when many headsets are brought into the car. can do. As a result, the driver can concentrate on driving while avoiding complicated operations, and can avoid losing the opportunity to talk.

  In this manner, the hands-free system 1 selects and communicates with a device according to the priority order, and the hands-free system 1 transmits / receives data to / from this device based on the error correction processing result of the audio data transmitted / received to / from this device. The quality of the audio data is monitored, and when the quality of the audio data decreases, the connection is switched to the device having the next priority. As a result, in the hands-free system 1, it is possible to transmit and receive voices via a device that can reliably communicate, thereby improving the user-friendliness.

  Further, in the hands-free system 1, when the device selected according to the priority order is the headset device 4 that is operated by the battery 21, the device having the subsequent priority order is reduced due to a decrease in the remaining amount of the battery 21. The connection is switched. As a result, it is possible for the user to avoid the inconvenience that the user cannot make a call due to running out of battery in the middle of the call, thereby improving the usability.

(3) Advantages of the embodiment According to the above configuration, a number of devices forming a hands-free system are brought into the vehicle by selecting a device that inputs and outputs voice according to the priority order and using it for a call. Even in this case, it is possible to prevent usability deterioration in the mobile phone.

  In addition, by monitoring the quality of audio data sent to and received from this selected device and switching the connection to the device with the next priority due to the deterioration of the audio data quality, the audio can be transmitted via a device that can reliably communicate. It is possible to send and receive, and this can also improve the user-friendliness.

  In addition, if the selected device is a device that operates from a battery power source, switching to a subsequent priority device due to a decrease in the remaining battery level will cause inconvenience that calls cannot be made due to a battery exhaustion during a call. This can be avoided, and this can also improve the usability.

  FIG. 7 is a flowchart showing the processing procedure of the mobile phone according to the second embodiment in comparison with FIG. In the hands-free system according to the second embodiment, the priority order is switched depending on the presence or absence of a passenger. In this embodiment, except for the configuration related to the presence or absence of a passenger, the configuration is the same as the hands-free system 1 described above with respect to the first embodiment, so that FIG. Are indicated by corresponding reference numerals, and redundant description is omitted. In the following description, the configuration of the first embodiment is used.

  That is, the vehicle according to this embodiment has a passenger detection mechanism that detects the passengers in each seat, and notifies the presence / absence of a passenger by an inquiry from a mobile phone. Such an occupant detection mechanism includes, for example, a switch provided in each seat.

  In the mobile phone 2, when the user instructs the start of the call, the control unit 44 proceeds from step SP31 to step SP32, inquires of the vehicle system controller whether or not there is a passenger, and thereby the passenger in the vehicle. It is detected whether or not is on board. If there is a fellow passenger, the control unit 44 proceeds from step SP32 to step SP33, excludes a device that interferes with the fellow passenger from the priority order, and then proceeds to step SP12. In this embodiment, however, the car navigation device 3 has the possibility that the voice input from the microphone 6 and the voice output from the speaker 7 may interfere with the passenger and the driver. The device 3 is excluded from the priority order.

  On the other hand, when there is no passenger, the control unit 44 proceeds directly from step SP32 to step SP12.

  Thus, in this embodiment, by switching the priority order depending on the presence or absence of a passenger, the connection of the wireless communication unit 47 is switched according to the passenger, the device is selected in the same manner as in the first embodiment, and the hands-free system is established. Constitute.

  According to the second embodiment, according to the priority order, a device that inputs and outputs audio is selected and used for a call, and the selection of this device is switched according to the passenger detected in the vehicle. Even if many devices that make up a hands-free system are brought into the car so that the passenger does not get in the way, and conversely, the passenger does not get in the way. In addition, it is possible to prevent usability deterioration in the mobile phone.

  FIG. 8 is a flowchart showing the processing procedure of the mobile phone according to the third embodiment in comparison with FIG. In the hands-free system according to the third embodiment, a call can be made via the headset device 4 only when the user wears the headset device 4. In this embodiment, except for the configuration related to the headset device 4, the same configuration as the hands-free system 1 described above with respect to the first embodiment is performed. Are denoted by corresponding reference numerals, and redundant description is omitted. In the following description, the configuration of the first embodiment is used.

  Here, the headset device 4 is provided with a switch at a part that receives pressure by the user's wearing, a part that deforms, and the like, and detects such pressure and deformation by this switch to detect the user's wearing. Thus, in this embodiment, a detection unit for detecting the user's wearing is formed by this switch. In such a detection unit, various detection methods can be widely applied, for example, when a user's wearing is detected by a change in capacitance.

  As a result, when the user is instructed to start a call, the control unit 44 of the mobile phone 2 moves from step SP11 to step SP12 and selects a device according to the priority order. Establish a connection between them. In subsequent step SP41, the control unit 44 determines whether or not the selected device is the headset device 4. If a negative result is obtained here, the control unit 44 proceeds to step SP18. On the other hand, if a positive result is obtained in step SP41, the process moves from step SP41 to step SP42, and the user's wearing is detected by an inquiry to the headset device 4. Here, when the user wears the headset device 4, the control unit 44 proceeds from step SP42 to step SP18, whereas when the user does not wear the headset device 4, the control unit 44 proceeds from step SP42 to step SP15. Then select the next priority device to establish a connection.

  According to this embodiment, in accordance with the priority order, a device that inputs and outputs audio is selected and used for a call, and when the selected device is a headset, the detection result by the detection unit that detects the user's wearing By switching the connection of the wireless communication unit based on the device, when the user is not wearing a headset, it can be set so that a call can be made with another device, which can further improve usability it can.

  In this embodiment, instead of setting the priority order on the mobile phone side in the above-described first to third embodiments and connecting the mobile phone and other devices based on this priority order, the car navigation device side which is an in-vehicle device Thus, these processes are executed.

  That is, in this hands-free system, the priority setting by the user is received by the car navigation device.

  In the hands-free system, when a call instruction is received by an operation of a mobile phone or by an operation of the car navigation device 3, and when a call instruction is received by an operation of the car navigation device 3, By the control, the car navigation device 3 or the headset device 4 is selected according to the priority order and connected to the mobile phone 2. In connection with the headset device 4 and the mobile phone 2, the headset device 4 and the mobile phone 2 are connected via the car navigation device 3 in addition to the direct connection between the headset device 4 and the mobile phone 2. May be connected.

  On the other hand, when a call instruction is received by operating the mobile phone 2, the car navigation device 3 selects a device and gives an instruction for connection in response to an inquiry from the mobile phone 2. In this case as well, when the headset device 4 and the mobile phone 2 are connected, the headset device 4 and the mobile phone 2 can be directly connected to the mobile phone 2 via the car navigation device 3. The telephone 2 may be connected.

  After the device is selected in this way, the connection switching control related to the mobile phone 2 described above with respect to the first to third embodiments is executed on the car navigation device 3 side.

  As in this embodiment, the same effect as in the above-described embodiment can be obtained even when the priority is set and the device is selected on the car navigation device side which is an in-vehicle device.

  In the above-described embodiment, the case has been described in which priority is set on the mobile phone and the car navigation device side, and a device that transmits and receives audio data to and from the mobile phone is selected. However, the present invention is not limited to this. Instead, these processes may be shared by the mobile phone side and the car navigation device, and further, these processes may be executed by the headset device side which is one of the in-vehicle devices.

  In the fourth embodiment described above, a case has been described in which priority is set by the car navigation device that is an in-vehicle device and a device that transmits and receives audio data to and from the mobile phone is selected. For example, a priority may be set by various in-vehicle devices such as a car audio device, and a device that transmits / receives audio data to / from a mobile phone may be selected.

  In the above-described embodiment, the case where a device used for a call is selected and connected to a mobile phone has been described. However, the present invention is not limited to this, and the connection may be made by user confirmation.

  Further, in the above-described embodiments, the case where voice data is transmitted and received between each device by wireless communication has been described. However, the present invention is not limited to this, and is widely applied to the case where voice data is transmitted and received by wire. Can do. In this case, for example, a case in which a mobile phone cradle, which is a dedicated mounting table for a mobile phone, is provided in the in-vehicle device may be considered.

  In the above-described embodiments, the case where the hands-free system is formed by the mobile phone, the car navigation device, and the headset device has been described. However, the present invention is not limited to this, and in addition to these devices or these devices. Instead, the present invention can be widely applied, for example, when a hands-free system is formed by a portable audio player.

  The present invention can be applied to a vehicle system equipped with a car navigation device.

It is a flowchart which shows the process sequence of the control part in the mobile telephone of the handsfree system which concerns on Example 1 of this invention. It is an approximate line figure showing a hands free system concerning Example 1 of the present invention. It is a block diagram which shows the headset apparatus in the hands-free system of FIG. 4 is a flowchart for explaining an operation of a headset control unit in the headset device of FIG. 3. It is a block diagram which shows the car navigation apparatus in the hands-free system of FIG. It is a block diagram which shows the mobile telephone in the hands-free system of FIG. It is a flowchart which shows the process sequence of the control part in the mobile telephone of the handsfree system which concerns on Example 2 of this invention. It is a flowchart which shows the process sequence of the control part in the mobile telephone of the handsfree system which concerns on Example 3 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Hands-free system, 2 ... Mobile phone, 3 ... Car navigation device 3 ... Headset device, 23, 34, 47 ... Wireless communication part, 24 ... Headset control part, 33 ... Hands-free Control unit 44... Control unit 49 49 Priority table

Claims (8)

Mobile phone,
In a hands-free system having a voice input / output unit for inputting / outputting voice and a plurality of devices capable of transmitting / receiving voice data related to the voice input / output unit to / from the mobile phone,
Accept the priority setting indicating the connection priority in advance,
A hands-free system, wherein one of the plurality of devices is selected in accordance with the priority order, and the mobile phone is set to send and receive voice to and from a call target via the selected device. A wireless communication unit for a call that sends a user's voice to a call target and receives the call target voice; and
A microphone for acquiring the user's voice;
In a mobile phone having a speaker that provides the user with the voice to be called,
Audio data is transmitted / received between a plurality of external devices having an audio input / output unit that inputs / outputs audio by wired or wireless, and the audio data is input / output to / from the wireless communication unit of the call. A communication department;
A control unit for controlling the overall operation,
The controller is
Accept the priority setting indicating the connection priority in advance,
According to the priority order, one of the plurality of external devices is selected and voice data is transmitted and received by the communication unit, and the voice data is input to and output from the wireless communication unit of the call. A mobile phone characterized in that the external device is selected according to the ranking, and voice is transmitted to and received from the call target using the selected external device. The control means includes
Monitor the quality of audio data sent to and received from the selected external device,
The mobile phone according to claim 2, wherein the connection of the communication unit of the audio data is switched to an external device having a subsequent priority order due to deterioration of the quality of the audio data. The control means includes
3. When the external device is a device that operates from a battery power source, the connection of the audio data communication unit is switched to an external device having a subsequent priority order due to a decrease in the remaining battery level. The listed mobile phone. The plurality of external devices are devices mounted on a vehicle,
The control means includes
The cellular phone according to claim 2, wherein the connection of the communication unit for the voice data is switched according to a passenger detected by the vehicle. At least one of the plurality of external devices is a headset having a detection unit that detects wearing of a user,
The control means includes
The cellular phone according to claim 2, wherein the connection of the communication unit of the audio data is switched based on a detection result by the detection unit. A voice data communication unit that transmits and receives voice data by wire or wireless between a plurality of devices having a voice input / output unit that inputs and outputs voice and a mobile phone;
A control unit for controlling the overall operation,
The controller is
Accept the priority setting indicating the connection priority in advance,
An in-vehicle apparatus, wherein one of the plurality of devices is selected according to the priority order, and the mobile phone is set to transmit and receive voice to and from a call target via the selected device. A microphone that acquires voice and outputs the voice data to a communication unit;
A speaker that provides voice based on voice data acquired by the voice data communication unit;
The in-vehicle device according to claim 7, wherein one of the plurality of devices is its own device.

Images