JP5387197B2 - Wireless communication terminal - Google Patents

Description

  The present invention relates to a wireless communication terminal.

  In recent years, for example, Bluetooth (registered trademark) is known as a wireless communication technology that can be applied to electronic devices. As a Bluetooth call control profile, “Hands-Free Profile (HFP)” is known. The HFP defines a function that enables the volume control of the opposite device from a mobile phone.

The HFP defines a function that enables the volume control of the opposite device from a mobile phone.
When the HFP connection is established between the mobile phone and the opposite device, a support function notification is transmitted from the opposite device to the mobile phone after the establishment of the lower layer. If the opposing device supports volume control, the support notification includes information indicating that volume control is supported. Thereafter, when the HFP connection is established, a volume update notification is sent from the opposite device to the mobile phone. In the first volume update notification after establishment of the HFP connection, the opposite device notifies the mobile device of the initial volume value of the opposite device (FIG. 6). The mobile phone can receive a volume control support notification from the opposing device, and further receive a volume update notification (notification of the initial volume value) after establishing the HFP connection, thereby enabling a volume control instruction to the opposing device. The volume control instruction of the opposite device from the mobile phone is a function for instructing the volume change of the opposite device from the mobile phone. In addition, when a volume change is made based on a volume change operation on the opposite device side after the volume control instruction from the portable phone to the opposite device becomes possible, a volume update notification is transmitted from the opposite device to the portable phone.

  In addition, according to HFP, when an incoming call is made to a mobile phone, a ring tone called an in-band ring tone can be notified to the opposite device. The in-band ringtone notification function establishes a voice link from a mobile phone when an incoming call is received, encodes the ringtone itself on the link, and then decodes the encoded data in the opposite device from the mobile phone. This is a function to ring the transmitted ringtone. In general, it is considered that the in-band ringtone can increase or decrease the ringing volume at the opposite device by a volume control instruction from the mobile phone. However, when the in-band ringing tone is not set, the mobile phone simply notifies the opposite device of an incoming call. If in-band ringtone ringing is not set, whether the ringtone rings on the opposite device depends on the implementation of the opposite device, but the fixed ringtone held or generated internally by the opposite device Is common. (See Non-Patent Document 1)

Bluetooth Hands-Free Profile 1.5 (Bluetooth S1G)

  However, such volume control may cause the following problems. First, for example, when an HFP connection has been established between an opposing device that supports a volume control function and a Bluetooth HFP-equipped mobile phone, the user has a voice path in the mobile phone and the opposing device speaker is muted during a call. Even if an operation is performed to increase the volume using the volume control means of the opposite device with the intention of increasing the volume of the mobile phone during a call, the call volume of the mobile phone does not change and is muted. The volume setting value of the opposite device increases. As a result, when the audio path is switched to the opposite device and the mute of the opposite device is released thereafter, there is a possibility that the sound rings at a high volume.

  Second, in the case of a mobile phone that controls the volume of the opposite device only when there is no voice path, when the in-band ring tone notification is disabled when an incoming call occurs, the volume by the volume change operation of the opposite device Volume control using update notification cannot be performed.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a wireless communication terminal that enables a call on the opposite device after performing volume control so that the volume of the opposite device is appropriate.

  In order to achieve the above object, a wireless communication terminal according to the present invention comprises a short-range wireless communication means for communicating with a hands-free call device by short-range wireless communication, and a network communication means for receiving an incoming signal transmitted from a mobile communication network. And when the voice link is established in a state where the volume of the hands-free call device can be controlled by the short-range wireless communication means, a control for transmitting a volume value instruction to the hands-free call device is performed. It has the control means to do.

  ADVANTAGE OF THE INVENTION According to this invention, the radio | wireless communication terminal which enables the telephone call by an opposing apparatus can be provided, after performing volume control so that the volume of an opposing apparatus becomes appropriate.

1 is a diagram showing the relationship between a mobile phone 1 according to an embodiment of the present invention and devices that are wirelessly connected thereto. The block diagram which shows the structure of the mobile telephone 1 which concerns on embodiment of this invention. The flowchart which shows the process of the volume update notification reception judgment part 58 of the mobile telephone 1 which concerns on embodiment of this invention. The sequence diagram of the mobile telephone 1 and the vehicle equipment 2 by which the volume update notification reception judgment part 58 which concerns on embodiment of this invention is set to the mode 1. FIG. The sequence diagram of the mobile telephone 1 and the vehicle equipment 2 by which the volume update notification reception judgment part 58 which concerns on embodiment of this invention is set to mode 2. FIG. FIG. 5 is a sequence diagram until the mobile phone establishes an HFP connection with the opposite device and becomes in a state where volume control is possible.

  Embodiments of the present invention will be described below with reference to the drawings. Here, a case where volume control of an in-vehicle device is performed from a mobile phone capable of short-range wireless communication will be described as an example. However, the opposing device is not limited to the in-vehicle device, and may be applied to other devices such as a headset.

  FIG. 1 is a diagram showing a relationship between a mobile phone 1 according to the present embodiment and an in-vehicle device 2 wirelessly connected thereto. The cellular phone 1 transmits a volume control instruction according to HFP to the in-vehicle device 2 by short-range wireless communication. The in-vehicle device 2 may change the sound volume in response to the operation of the sound volume changing operation means of the in-vehicle device 2. In this case, the in-vehicle device 2 transmits a volume update notification to the mobile phone 1. To do.

  FIG. 2 is a block diagram showing a configuration of the mobile phone 1 according to the present embodiment. The cellular phone 1 includes a control unit 51, an operation unit 52, a display unit 53, a voice input / output unit 54, a network communication unit 55, a storage unit 56, a short-range wireless communication unit 57, and a volume update notification reception determination unit 58. .

The control unit 51 includes a CPU, a ROM, a RAM, and the like, and performs general processing as the mobile phone 1, and also handles processing of the short-range wireless communication unit 57 and the volume update notification reception determination unit 58. Further, the control unit 51 analyzes the support information by the support function notification from the opposite device based on the information from the short-range wireless communication unit 57, the response via the short-range wireless communication unit 57, and the volume update notification from the opposite device. Based on the instruction of the volume update notification reception determination unit 58 via the short distance wireless communication unit 57 based on the volume value analysis to the opposite device and the response to the volume update notification based on the instruction of the volume update notification reception determination unit 58 It performs volume control instructions, voice link establishment from the opposite device or mobile phone, and other controls to satisfy functions generally defined by HFP. In addition, the control unit 51 entrusts the volume update notification reception determination unit 58 with a part of the determination as to whether or not the volume control is necessary, depending on information from the data input unit, information on the control unit 51 itself, and the like. A volume control instruction / volume update notification response instruction is given to the wireless communication unit 57.

  The operation unit 52 includes operation keys, a touch panel, a touch sensor, and the like, and inputs a signal corresponding to a user operation to the control unit 51. The operation unit 52 includes a button for instructing a volume change.

  The display unit 53 is configured by a liquid crystal display, an organic EL display, or the like, and displays characters and images according to the operation of the application.

  The voice input / output unit 54 includes a speaker and a microphone, and performs voice call input / output of a voice call by the radio telephone communication unit 55 and voice / music output of music content and moving image content.

  The radio telephone communication unit 55 performs voice communication and packet communication via the base station. For example, when voice is transmitted by voice communication, data obtained by performing signal processing such as encoding and error control on voice data obtained by collecting voice from the microphone of the voice input / output unit 54 is converted into radio waves. Convert and send to base station. The received voice receives radio waves from the base station, converts the radio waves into electrical signals, performs signal processing such as decoding and error correction, and outputs the voice from the speaker of the voice input / output unit 54. Note that typical call states of the mobile phone 1 include waiting, calling, receiving, outgoing, and on hold. When a call is received, a call is made from the calling party to the mobile phone having the telephone number by searching for the mobile phone having the telephone number from the base station. This is a state in which the user is informed. At this time, for example, it is general that a ringing tone is generated from a speaker, that a display unit indicates that an incoming call has occurred, or that the status is notified to the opposite device by the short-range wireless communication unit. Here, if the user performs a response operation, the call is in progress, if the incoming call rejection operation is performed, the standby is performed, and if the hold operation is performed, the response is on hold. However, the state of the mobile phone 1 is not limited to these.

  The storage unit 56 stores various application software, music content, moving image content, and the like.

The short-range wireless communication unit 57 is composed of a Bluetooth communication module and the like, and enables voice communication with a hands-free device by HFP or audio data to an opposite device without using an audio cable by A2DP (Advanced Audio Distribution Profile). Can be transferred. In response to an instruction from the control unit 51, the short-range wireless communication unit 57 performs physical control on a Bluetooth chip that mainly performs Bluetooth communication,
Logical control such as operation state is possible. The physical control includes, for example, physical session management for performing wireless communication with the opposite device, starting with power supply. Logical control includes, for example, session management of the HFP control link, session management of the HFP audio link, analysis and generation of data flowing on the control link by the HFP, and the like.

Based on the instruction from the control unit 51, the volume update notification reception determination unit 58 determines a response to the volume update notification notified from the opposite device based on the incoming call state and the voice link state. The volume update notification reception determination unit 58 can be set to one of the following three modes. Note that the volume update notification reception determination unit 58 may have only one of the following three modes, or may be selectable from any two of the three modes. One of the two modes may be selectable.
[Mode 1] When a voice link is established by the short-range wireless communication unit 57, the volume value of the opposite device notified by the volume update notification is not discarded. When the voice link is not established by the short-range wireless communication unit 57, the volume value of the opposite device notified by the volume update notification is discarded.
[Mode 2] When the mobile phone 1 is receiving a call, the volume value of the opposite device notified by the volume update notification is not discarded. When the mobile phone 1 is not receiving a call, the volume value of the opposite device notified by the volume update notification is discarded.
[Mode 3] When a voice link is established by the short-range wireless communication unit 57 or when the mobile phone 1 is receiving a call, the volume value of the opposite device notified by the volume update notification is not discarded. When the voice link is not established by the short-range wireless communication unit 57 and the mobile phone 1 is not receiving a call, the volume value of the opposite device notified by the volume update notification is discarded.

  When the voice link is established, the microphone input by the opposite device is encoded and transmitted to the mobile phone via the voice link, and this is regarded as the microphone input of the mobile phone, and the speaker of the mobile phone. This is a state in which the data ringing is encoded and transmitted to the opposite device via the voice link, and after the encoding is canceled by the opposite device, it is output by the speaker output. This is the case when a dial tone is notified to the opposite device, or when the in-band ring tone is notified to the opposite device when the in-band ring tone sounds.

  A case where the volume value of the opposite device notified by the volume update notification is not discarded may be, for example, a case where the mobile phone 1 holds the volume value. However, the case where the notified volume value is not discarded is not necessarily limited to the case where the notified volume value is held. For example, when the mobile phone 1 receives a volume update notification from the opposite device, a volume control instruction may be given using this volume value without holding the notified volume value of the opposite device.

FIG. 3 is a flowchart showing the processing of the volume update notification reception determination unit 58. In the flowchart of FIG. 3, it is assumed that the above-described mode 1 is set. First, it is assumed that the volume control of the opposite device can be performed from the mobile phone 1 (S1). That is, the mobile phone 1 is equipped with Bluetooth HFP and receives a support function notification indicating that the volume control function is supported from the opposite device when establishing an HFP connection with the opposite device. It is assumed that after the HFP connection is established with the opposite device, the first volume update notification (volume update notification indicating the initial volume value of the opposite device) is received from the opposite device. In this state, a volume update notification is received from the opposite device via the short-range wireless communication unit 57 (S2). Then, the volume update notification reception determination unit 58 determines whether a voice link has been established with the opposite device (S3). If the voice link has been established (Yes in S3), the volume value of the opposite device notified from the opposite device is retained, for example, without being discarded (S4). On the other hand, if the voice link has not been established (No in S3), the volume value of the opposite device notified from the opposite device is discarded (S5). When the volume value notified from the opposite device is discarded, a volume value instruction is transmitted to the opposite device (S6).

  The timing at which Step S6 is executed may be immediately before establishing the voice link between the mobile phone 1 and the opposite device, immediately after establishing the voice link, or twice before and after establishing the voice link. May be executed. For example, when establishing a voice link in response to a user operation for voice transfer input via the operation unit 52 of the mobile phone 1, before establishing a voice link based on this user operation, Send the volume value instructions. As a result, even if the volume value of the opposite device is changed to a value that is too high, the volume value notified from the mobile phone 1 is set, so that suddenly a loud sound is output from the opposite device after the voice link is established. Can be prevented. Further, when establishing a voice link from the opposite device side, since the volume value instruction is transmitted from the mobile phone 1 to the opposite device immediately after the voice link is established, for example, the volume of the opposite device is set to a high volume. Even so, the sound volume can be changed to an appropriate sound volume immediately after the voice link is established based on the sound volume notified from the mobile phone 1. Before sending the voice link to the opposite device before and after establishing the voice link, if the opposite device accepts the volume value instruction even if there is no voice link, before the voice link is established The volume of the opposite device can be controlled to an appropriate volume, and even if the opposite device accepts an instruction only when there is a voice link, it can be changed to an appropriate volume immediately after the voice link is established.

  When performing a volume control instruction, a volume value is transmitted to at least the opposite device. When a sound volume control instruction is given, information such as an image or a character meaning that sound volume control is possible may be notified to the display unit 53, and a sound indicating that the sound volume control is possible is sent to the sound input / output unit 54 ( For example, a beeping sound) may be notified. The volume value notified to the opposite device when performing the volume control instruction may be transmitted as a stored volume value or as a volume value based on a value input via the operation unit 52. Alternatively, a value obtained by adding or subtracting a predetermined value to the value displayed on the display unit 53 may be transmitted as the volume value, or the volume value set in the mobile phone 1 may be transmitted. good.

  When the volume control instruction is not performed, the volume value is not transmitted to at least the opposite device. At this time, the display unit 53 may be notified of information such as images and characters meaning that volume control is impossible, and the sound input / output unit 54 indicates that volume control is not possible (for example, a beeping sound). May be notified.

  In the above description, the case where a user operation for voice transfer is input is described as an example of the event that becomes the beginning of the establishment of the voice link. However, the event for establishing the voice link is the event of the voice transfer. The operation is not limited to this. For example, a voice link may be established when, for example, a ringing tone is established for the opposite device to ring or when a dial tone is caused for the opposite device. In any voice link establishment, the volume value may be transmitted to the opposite device either at least before or after the voice link establishment. As a result, when a voice link is established with the opposite device (or immediately after that), it is possible to output sound at a volume instructed from the mobile phone 1.

  If mode 2 is set in the volume update notification reception determination unit 58, the determination in step S4 in the flowchart of FIG. 3 is replaced with a determination as to whether or not an incoming call has occurred. Further, when mode 3 is set in the volume update notification reception determination unit 58, the determination in step 4 is made based on at least one of “a state where a voice link is established” and “a state where an incoming call is occurring”. It replaces with the judgment whether it corresponds to either.

  Note that the configurations and processing sharing of the short-range wireless communication unit 57, the control unit 51, and the volume update notification reception determination unit 58 are not limited to the above. For example, the volume update notification reception determination unit 58 may be included in the control unit 51.

  Further, the volume change instruction does not necessarily have to be provided via the operation device of the opposite device, and may be generated during the process of the control device of the opposite device, for example, when it is desired to fade out a call.

  FIG. 4 is a sequence diagram of the mobile phone 1 and the vehicle-mounted device 2 having the above-described configuration and in which the volume update notification reception determination unit 58 is set to mode 1.

  First, the mobile phone 1 is turned on, and a standby screen is displayed on the display unit 53. The control unit 51 has variables for managing the HFP connection state, the volume control support state, and the volume update notification state. Immediately after the cellular phone 1 is turned on, these variables have no HFP connection and are supported. No information and no volume update notification.

  Next, the lower layer establishes connection between the in-vehicle device 2 and the mobile phone 1, and the mobile phone 1 receives the support function notification from the in-vehicle device 2. When it is found from the support function notification received from the in-vehicle device 2 that the in-vehicle device 2 supports the volume control, the control unit 51 indicates that the variable that manages the support state of the volume control is supported. Change to a variable. When the HFP connection is established, the variable indicating the HFP connection state is changed to a variable indicating that the HFP connection is established. Further, after the HFP connection is established, when the mobile phone 1 receives a volume update notification indicating the initial value of the volume value of the in-vehicle device 2 from the in-vehicle device 2, the control unit 51 of the mobile phone 1 sets the state of the volume update notification. Is changed to a variable indicating that there is a volume update notification. Thereby, the mobile phone 1 is in a state in which the volume of the in-vehicle device 2 can be controlled.

  Subsequently, when an incoming call is received by the network communication unit 55 and an incoming call response operation is received via the operation unit 52, the voice path becomes a call state in the state of the mobile phone 1. At this time, when an operation for changing the volume is accepted via the volume change operation unit of the in-vehicle device 2, the in-vehicle device 2 notifies the mobile phone 1 of the changed volume value.

  The cellular phone 1 receives the volume update notification output from the in-vehicle device 2 via the short-range wireless communication unit 57. Then, the volume update notification reception determination unit 58 determines whether or not to discard the received volume value of the in-vehicle device 2. When the mode set in the volume update notification reception determination unit 58 is mode 1, since the voice link is not established between the mobile phone 1 and the in-vehicle device 2, the volume update notification reception determination unit 58 has received The volume value of the in-vehicle device 2 is discarded. Even if the operation for changing the volume is continuously received a plurality of times, the volume update notification reception determination unit 58 similarly discards the received volume value of the in-vehicle device 2.

  Even if a volume change operation is received by the operation unit 52 of the mobile phone 1 by the determination of the volume control instruction determination unit 58, the mobile phone 1 discards the volume value notified from the in-vehicle device 2, The cellular phone 1 does not store the volume after the change of the in-vehicle device 2. For example, in the case of the mobile phone 1 having a function of displaying the volume of the in-vehicle device 2 on the display unit 53, the volume displayed on the display unit 53 is not changed even if the volume change operation is performed on the in-vehicle device 2.

  By operating the operation unit 52 of the mobile phone 1, a voice link is established between the mobile phone 1 and the in-vehicle device 2, and when the audio path is switched to the in-vehicle device 2, the call voice is sounded from the in-vehicle device 2. . However, the mobile phone 1 transmits a volume value instruction to the in-vehicle device 2 before transmitting a request for establishing a voice link to the in-vehicle device 2. The in-vehicle device 2 that has received this volume control instruction performs the volume setting of the in-vehicle device 2 based on the notified volume value.

  For this reason, even if the volume value operating means of the in-vehicle device 2 is operated while the speaker of the in-vehicle device 2 is set to mute and the volume value of the in-vehicle device 2 is changed to a high volume, the speaker of the in-vehicle device 2 When the mute is released, suddenly loud sound can be prevented from being output from the speaker of the in-vehicle device 2.

  Here, when a volume change operation is accepted via the volume change operation means of the in-vehicle device 2, the in-vehicle device 2 notifies the mobile phone 1 of the changed volume value.

  The cellular phone 1 receives the volume update notification output from the in-vehicle device 2 via the short-range wireless communication unit 57. Then, the volume update notification reception determination unit 58 determines whether or not to discard the received volume value of the in-vehicle device 2. When the mode set in the volume update notification reception determination unit 58 is mode 1, since the voice link has been established between the mobile phone 1 and the in-vehicle device 2, the volume update notification reception determination unit 58 has received The volume value of the in-vehicle device 2 is not discarded.

  When the voice link is established by the determination of the volume update notification reception determination unit 58 as described above, it is determined that the volume of the notified opposite device is valid, and for example, the volume of the in-vehicle device 2 is displayed on the display unit 53. In the case of the mobile phone 1 having a display function, the volume displayed on the display unit 53 can be changed based on the volume value notified by the volume change operation in the in-vehicle device 2.

  FIG. 5 is a sequence diagram of the mobile phone 1 and the in-vehicle device 2 in which the volume update notification reception determination unit 58 is set to mode 2. The operation until the volume control is possible in the sequence shown in FIG. 5 is the same as the operation described in the sequence shown in FIG. It is assumed that the HFP connection between the mobile phone 1 and the in-vehicle device 2 is established, the volume of the in-vehicle device 2 can be controlled from the mobile phone 1, and the audio path is in the mobile phone 1.

  When the operation unit 52 of the mobile phone 1 receives an operation for setting no in-band, the mobile phone 1 notifies the in-vehicle device 2 of an in-band setting instruction. When the mobile phone 1 receives an incoming call by the network communication unit 55, the in-vehicle device 2 is notified of the incoming call. However, if there is no in-band setting, the incoming call tone is not notified and the information indicating the incoming call is received. Only is transmitted to the in-vehicle device 2. When only the information indicating an incoming call is notified from the mobile phone 1, the in-vehicle device 2 sounds a built-in ring tone.

  At this time, when a volume change operation is accepted via the volume change operation means of the in-vehicle device 2, the in-vehicle device 2 notifies the mobile phone 1 of the changed volume value.

  The cellular phone 1 receives the volume update notification output from the in-vehicle device 2 via the short-range wireless communication unit 57. Then, the volume update notification reception determination unit 58 determines whether or not to discard the received volume value of the in-vehicle device 2. When the mode set in the volume update notification reception determination unit 58 is mode 2, since the mobile phone 1 is in an incoming call state, the volume update notification reception determination unit 58 discards the received volume value of the in-vehicle device 2 do not do.

  As described above, when an incoming call occurs, the mobile phone 1 determines that the volume value notified from the opposite device is valid, and performs control using the volume value (for example, display on the display unit 53). It can be performed.

  Thereafter, when an incoming call rejection operation is input to the in-vehicle device 2, the in-vehicle device 2 notifies the mobile phone 1 of the incoming call rejection. The mobile phone 1 that has received the notification of the incoming call rejection controls the network communication unit 55 to end the incoming call. When the incoming call ends in this way, neither the incoming call state nor the telephone call state disappears, and a standby state is established. If the volume change notification is received from the in-vehicle device 2 when the call state of the mobile phone 1 is not an incoming call state, the volume update notification reception determination unit 58 receives from the in-vehicle device 2 because the mobile phone 1 is not in the incoming state. Discard the received volume value.

  As described above, the case where the volume update notification reception determination unit 58 is set to mode 1 and the case where mode 2 is set has been described using the sequence diagrams shown in FIGS. 4 and 5. When the volume update notification reception determination unit 58 is set to mode 3, when it is determined not to discard the volume value received from the counterpart device in mode 1, or to cancel the volume value received from the counterpart device in mode 2. If this is the case, it is determined that the volume value received from the opposite device is not discarded. Therefore, when the volume update notification reception determination unit 58 is set to the mode 3, in addition to the case where the notification is made during the call or the dial tone described with reference to FIG. 4, the description has been made with reference to FIG. Even when an incoming call is received, the volume value received from the opposite device can be determined as the volume value of the opposite device.

  In addition, it is not limited to the said embodiment, You may change suitably in the range which does not deviate from the summary of this invention.

DESCRIPTION OF SYMBOLS 1 Mobile phone, 2 Car equipment, 51 Control part, 52 Operation part, 53 Display part, 54 Voice input / output part, 55 Network communication part, 56 Storage part, 57 Short-range wireless communication part, 58 Volume update notification reception judgment part

Claims (5)

Short-range wireless communication means for communicating with a hands-free call device by short-range wireless communication;
Network communication means for receiving an incoming signal transmitted from a mobile communication network;
Control for transmitting a volume value instruction to the hands-free call device when establishing a voice link in a state in which the volume of the hands-free call device can be controlled by the short-range wireless communication means A wireless communication terminal comprising means. Short-range wireless communication means for communicating with a hands-free call device by short-range wireless communication;
Network communication means for receiving an incoming signal transmitted from a mobile communication network;
Control for transmitting a volume value instruction to the hands-free call device before establishing a voice link in a state where the volume of the hands-free call device can be controlled by the short-range wireless communication means. A wireless communication terminal comprising control means for performing Short-range wireless communication means for communicating with a hands-free call device by short-range wireless communication;
Network communication means for receiving an incoming signal transmitted from a mobile communication network;
Before the voice link is established and after the voice link is established in a state in which the volume of the hands-free call device can be controlled by the short-range wireless communication means, a volume value instruction is given to the hands-free call device. A wireless communication terminal comprising control means for controlling transmission.   The state in which the volume of the hands-free call device can be controlled by the short-range wireless communication means means that the hands-free call device supports the volume control function from the hands-free call device via the short-range wireless communication means. 2. The information indicating that the hand-free communication device is received, and the volume value of the hands-free communication device is received at least once from the hands-free communication device by the short-range wireless communication means. The wireless communication terminal according to claim 3.   4. The volume value notified to the hands-free call device according to the control of the control means is a volume value of the terminal itself. Wireless communication terminal.

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