KR20170047345A - Manual bluetooth hands free transfer mode - Google Patents

Abstract

A method of controlling audio signal transmission from a portable device to a hands-free device in a vehicle multimedia system may include receiving a request from a portable device for connection to a hands-free device by a processor of the vehicle multimedia system. The processor can determine whether the portable device is involved in an active call. In response to the determination that the portable device is involved in the active call, a confirmation message may be displayed to confirm that the user desires to transmit the audio signal related to the active call to the hands-free device. In response to receiving the user's confirmation to transmit an active call, the audio signal may be transmitted from the portable device to the hands-free device.

Description

Manual Bluetooth handsfree transmission mode {MANUAL BLUETOOTH HANDS FREE TRANSFER MODE}

The present disclosure relates to a system for connecting a wireless device possessed by an individual to a vehicle network and a method for manually initiating audio transmission from a wireless device to a hands free device.

It is well known that placing or receiving a call while driving can disperse the driver's attention. In order to prevent such a problem, a hands-free telephone method is widely used so that the driver can concentrate on driving without using a hand.

An exemplary initial hands-free device included a wired device mounted in a cell phone holder. However, in recent years, Bluetooth technology has been applied to such devices, which makes it possible to make and receive calls even with a mobile phone, for example, in a bag or pocket.

Bluetooth is a short-range wireless communication technology derived from the IEEE 802.15.1 standard and enables electronic devices such as wireless terminals located within approximately 10 meters to communicate with each other in a low cost and low power consumption manner. The present Bluetooth handsfree technology outputs an audio signal transmitted from a paired mobile phone or an MP3 player through a speaker in a vehicle and transmits a user's voice signal inputted through a microphone provided in the vehicle to the cellular phone when the telephone function of the cellular phone is used do. The conventional Bluetooth standard is defined to automatically connect when a connection request is received and to automatically disconnect when receiving a connection release request. When Bluetooth technology is integrated into a vehicle, the automatic transmission of ongoing calls (active calls) is not always desirable and can often be dissatisfied with the customer.

It is an object of various embodiments of the present invention to provide a method, computer program medium, and vehicle multimedia system for controlling the transmission of an audio signal from a mobile device to a hands-free device.

According to another aspect of the present invention, there is provided a method of controlling audio signal transmission from a portable device to a hands-free device in a vehicle multimedia system, the method comprising: receiving a request for connection to a hands- From the base station. The processor can determine whether the portable device is involved in an active call. In response to the determination that the portable device is involved in the active call, a confirmation message may be displayed to confirm that the user desires to transmit the audio signal related to the active call to the hands-free device. In response to receiving the user's confirmation to transmit an active call, the audio signal may be transmitted from the portable device to the hands-free device.

In an embodiment, in response to receiving a user's opposition to the transmission of an active call, repeated requests to connect to the hands-free device may be rejected.

Further, in order to achieve the above object, a computer program medium for controlling transmission of audio signals from a portable device to a hands-free device in a vehicle multimedia system according to an embodiment of the present invention includes at least one computer readable storage device, And a plurality of program instructions stored in at least one of the above computer-readable storage devices. The plurality of program instructions may include program instructions for receiving a request to connect to a hands-free device from a portable device. The plurality of program instructions may further include a program command for determining whether the portable device is involved in an active call. Wherein the plurality of program instructions are responsive to receiving a program command for displaying an acknowledgment message to confirm that the user desires to transmit an audio signal related to an active call to the handsfree device and receiving an acknowledgment of the user to transmit an active call And a program instruction for transmitting the audio signal from the portable device to the hands-free device.

In order to achieve the above object, a vehicle multimedia system (which may or may not have telematics) according to an embodiment of the present invention receives and converts an audio signal received from a portable device through a Bluetooth communication channel, A speaker system connected to the speaker system for transmitting audio signals to the audio system for subsequent audio transmission and receives and converts a voice signal of a user received through a microphone connected to the audio system and transmits a Bluetooth communication channel for subsequent audio transmission And a request for connection to the hands-free device is received from the portable device, and it is determined whether or not the portable device is involved in an active call. When it is determined that the portable device is involved in an active call In response, Displays an acknowledgment message to confirm that the user desires to transmit the audio signal associated with the call to the hands-free device, and transmits an audio signal from the portable device to the hands-free device in response to receiving the user's confirmation to transmit the active call And a controller adapted to control the motor.

Objects, features and advantages of the present invention, which have not been described or described above, will become apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Figure 1 is a block diagram illustrating an exemplary operating environment for various embodiments.
FIG. 2 is a flowchart illustrating operation steps of the hands-free module of FIG. 1 according to an embodiment of the present invention.
3 illustrates an exemplary pop-up display screen that may be displayed when a user enters a vehicle and turns on the ignition switch while engaged in an active call according to an embodiment of the present invention.
FIG. 4 illustrates an exemplary pop-up display screen that may be displayed when the hands-free module of FIG. 1 enters a private mode in accordance with an embodiment of the present invention.
5A-5B illustrate exemplary screen shots that may be displayed following transmission of an audio signal in response to receipt of a user's confirmation in accordance with an embodiment of the present invention.

The advantages and features of the embodiments disclosed herein and how they can be accomplished will be described by means of embodiments detailed with reference to the accompanying drawings. However, the present disclosure is not limited to the embodiments described herein, but may be embodied in various forms. Rather, the embodiments are provided so that those skilled in the art, upon reading the present disclosure, can readily implement the spirit of the present disclosure.

In the drawings, the embodiments of the present disclosure are not limited to the specific forms shown and are somewhat exaggerated for clarity. Although specific terms are used herein, specific terms are used only to describe the disclosed embodiments and are not used to limit the meaning or scope of the embodiments described in the claims.

The expression "and / or" is used herein to mean at least one of the elements listed before and after the expression. Also, the expression "connected / coupled" is used to mean either directly connected to another component or indirectly connected through another component. The singular forms herein include plural forms, unless the context clearly dictates otherwise. Also, elements, steps, operations and elements referred to herein as "comprises" or "comprising " means that at least one of the other elements, steps, acts, do.

As used herein, "vehicle", "vehicular", or other similar terminology refers to automobiles, passenger automobiles generally including sport utility vehicles (SUVs), buses , Including trucks, various commercial vehicles, ships including various boats and ships, airplanes, and other hybrid vehicles, such as hybrid vehicles, electric vehicles, plug-in hybrid vehicles, hydrogen-powered vehicles and other alternative fuels , Fuels obtained from non-petroleum resources) vehicles. As mentioned herein, a hybrid vehicle is a vehicle having two or more power sources, such as gasoline-based power and electric-based power.

As mentioned herein, the phrase "vehicle multimedia system " means an integrated information system having wireless communication capabilities. Such systems are often referred to as in-vehicle information systems and are integrated with telematics, entertainment systems, and / or navigation systems. Vehicle multimedia systems include, for example, GM On-Star®, GM On-Star My Link ^™ , Chrysler UConnect®, Ford Sync®, Kia UVO®, Toyota Entune® and Hyundai BlueLink ^™ systems, And other systems developed by the aftermarket component manufacturer.

In addition, it should be understood that the following methods for controlling audio signal transmission may be performed by at least one controller. The term "controller" refers to a hardware device including a memory and a processor. The memory is adapted to store program instructions and the processor is configured to execute program instructions to perform one or more processes as described in more detail below.

One aspect of the invention requires a Bluetooth protocol to establish a wireless connection between one of the modules connected to the vehicle network and a remotely located portable device. If a telephone call is in progress, the audio signal associated with the telephone call is transmitted to the vehicle network, and a wireless connection can be used to continue using the hands-free module in the vehicle. Now, when an individual (referred to herein as a "customer" or simply "user") makes a phone call to a wireless device and wants to ride in a vehicle, he or she can press a button on the phone the user is on or perform other tasks The phone call was automatically continued in the vehicle in a hands-free manner without performing. However, even in some situations, automatic transmission of such an audio signal may cause inconvenience to the user of the vehicle. As a result, this situation typically causes customer dissatisfaction.

Various embodiments of the present invention are intended to eliminate such inconveniences of the user by allowing the user to control the audio transmission process. It should be understood that the vehicle described below includes a Bluetooth communication module for connecting to a terminal via Bluetooth.

1 is a block diagram illustrating an exemplary operating environment 100 for various embodiments. The operating environment 100 may include an in-vehicle computer system, and one example of such a system is an in-vehicle head unit 112, . The operating environment 100 includes a portable communication link 130 for communication between the in-vehicle head unit 112 and the mobile device 102, a wireless communication link 107 between the portable device 102 and the network 120, And a wireless communication link 109 between the in-vehicle head unit 112 and the network 120. [ The communication links disclosed herein directly or indirectly connect these devices. The network 120 is not only a wireless communication network such as mobile communication composed of a plurality of base stations, a controller and a core network that generally includes a plurality of switching devices and a gateway, but also a public switched telephone network PSTN), a packet-switched network, a frame relay network, an optical network, and / or other types of networks.

The in-vehicle head unit 112 and the Bluetooth portable device 102 can communicate with each other via a communication link such as the Bluetooth link 130. [ The in-vehicle head unit 112 may include a touch panel display system and / or an in-vehicle PC system 120 that includes a communication unit 116 that facilitates communication, a memory unit device 114, and a processor 118. In one embodiment, . ≪ / RTI > The in-vehicle head unit 112 may be part of a vehicle multimedia system including a memory / storage device, a processor and a communication unit. 1 illustrates memory 114, communication unit 116, and processor 118 as part of in-vehicle head unit 112. For purposes of illustration, FIG. The in-vehicle head unit 112 may be integrated with a peripheral device such as a touch panel 122, a camera 124 and a handsfree device 126. [

In one embodiment, one form of input device, touch panel 122, and display screen may be integrated to provide an integrated input and display device (referred to herein as touch panel 122) To select one of the plurality of display selections or to activate one of the plurality of virtual or "soft" buttons, by enabling the display of information via the touch panel screen A part of the panel 122 may be touched. In this regard, the processor 118 supports a Graphical User Interface (GUI) that operates in conjunction with the touch panel 122.

The processor 108 and / or 118 processes the data signals and may include various computational structures. Although only one processor is shown in FIG. 1, a plurality of processors may be included in each device. Processors may include an arithmetic logic unit, a microprocessor, a general purpose computer, or other information device adapted to receive, transmit, and process electronic data signals from memory 104, 114 and other devices not shown or shown in the drawings. have.

The portable portable device 102 has a mobile system and includes various application programs that are integrated into the mobile system or stored in the memory / storage device 104 and executed by the processor 108. Examples of portable devices 102 include portable devices such as cellular phones, personal digital assistants (PDAs), smart phones, portable personal computers, laptop computers, tablet computers, smartwatches, It may be another possible device. As a general form, the portable device application program may be part of a larger bundle of vehicle functions and interactions. In an embodiment, the portable device 102 includes a communication unit 106, a memory unit device 104 and a processor 108. The portable device 102 has a mobile system and includes various applications programs that are integrated into the mobile system or stored in the memory / storage device 104 and executed by the processor 108.

Embodiments provide a management tool for connection between the portable device 102 and the in-vehicle head unit 112. In one embodiment, the communication management tool may be implemented with software installed on the portable device 102 and the in-vehicle head unit 112. [ The software can be used to establish a new connection or open an existing connection so that users can communicate directly over the connections between the programs to provide a high-quality experience. For example, the communication manager 110 is installed in the portable device 102 and the hands-free manager (HFM) is installed in the in-vehicle head unit 112 to manage the connection 130. The communication manager 110 and the HFM 115 can turn on this connection and send the correct media via the Bluetooth communication channel 130. [

The HFM 115 preferably provides support for hands-free processing. In one embodiment, a Bluetooth protocol stack is implemented to connect to a Bluetooth compatible handsfree device 126, such as a Bluetooth headset and a Bluetooth car kit. In certain embodiments, the hands-free manager 115 enforces a Bluetooth headset profile and / or a Bluetooth hands-free profile. The HFM 115 allows the hands-free unit 126 to operate as an audible relay for IP video telephony and audio-only cell phone calls on the network 120, as well as to perform other hands-free services. For example, in the case of an IP video phone, the audio portion of the phone is transmitted through the hands-free unit 126 instead of the speaker of the portable device 102, while the video portion of the phone is transmitted by the portable device 102 Can be maintained in the displayed state. The hands-free unit 126 also includes a microphone for capturing audio information, which may be transmitted to the portable device 102 later. Thus, the user can talk or listen to audio using the hands-free unit 126 during IP video telephony and / or audio only cellular telephone calls.

In the conventional technique for managing the Bluetooth connection between the vehicle and the portable device, when the user takes a vehicle while performing a telephone conversation on the portable device 102, Upon establishing the connection, at least the audio signal associated with the phone, regardless of the user's intent, is automatically transmitted to the handsfree device 126. However, various embodiments of the present invention allow the HFM 115 to share control of the Bluetooth connection / transmission process with the user, and in some embodiments allow the user to initiate the audio signal transmission process as described below . As a result, the user has the opportunity to decide whether or not to switch the active phone call to the hands-free mode for each particular phone.

FIG. 2 is a flowchart illustrating operation steps of the hands-free module of FIG. 1 according to an embodiment of the present invention. Prior to the description of FIG. 2, although the operating steps may be performed in any system and are not limited to the scenarios shown in the preceding figures, the flow diagram shown in FIG. 2 refers to the components shown in FIG. 1 As an example. In addition, while the flowchart of FIG. 2 illustrates an example in which operating steps are performed in a particular order as indicated by the lines connecting the blocks, the various steps shown in the figures may be performed in any order, Lt; / RTI > It will be appreciated that in some embodiments, some of the steps described below may be combined in one step. In some embodiments, one or more steps may be included.

In accordance with an embodiment of the present invention, the HFM module 115 may include components of the in-vehicle head unit 112 and may include and / or be coupled to a Bluetooth interface. The HFM 115 operates under the control of the processor 118. The HFM 115 may be executed in software. In step 202, the HFM module 115 receives a Bluetooth connection request message from the portable device 102 and subsequently exchanges messages with the device 102 (to determine the type and current status of the portable device) The presence of the portable device 102 of the vehicle user can be detected. For example, a subsequent exchange of this message may be utilized to determine whether the portable device 102 requesting the connection is involved in a telephone call and whether such a call is in an "active" state. As used herein, the term " telephone call "is generally a synonym for" voice call "unless otherwise indicated. As used herein, the term " active state "may refer to a state in which bi-directional communication is active, an attempt to establish bi-directional communication, or a part of bi- For example, a user of the portable device 102 may place a call to establish a two-way communication and may say that a telephone call exists before establishing a two-way connection. In some contexts, as will become apparent, a telephone call may include communications other than voice, such as, for example, video telephony, text messaging, chatting, video chatting,

In accordance with various embodiments of the present invention, in-vehicle head unit 112 is adapted to operate in several different modes, such as media, telephone conversation, navigation, rear camera and similar modes. According to one embodiment, in response to detecting the presence of the portable device 102 in step 204 and determining that the portable device 102 is currently operating in an active state, the HFM 115 may determine that the in- 112 can be determined. As mentioned above, the in-vehicle head unit 112 can be integrated into a camera 124, such as a rear camera. In general, the rear or "back" camera in the vehicle assists the driver when parking or exiting the car. The rear camera displays an image of the underside of the vehicle. In some cases, the in-vehicle head unit 112 may enter the corresponding rear camera mode to display an image of the obscured area on the touch panel 122. [ In general, at least some of the functions of in-vehicle head unit 112 may be temporarily unavailable in some modes. For example, the processor 118 may prevent the in-vehicle head unit 112 from changing the display state when operating in the rear camera mode.

According to an embodiment of the present invention, the HFM 115 allows the user to inform of their propensity for transmission of an active telephone call by generating a confirmation screen. However, the HFM 115 may display the generated screen to the user only if the current operating mode of the in-vehicle head unit 112 supports such a function. For example, steps 208 and 210 may be skipped by the HFM 115 in response to determining that the in-vehicle head unit 112 is operating in the rear camera mode (direction 'Yes' in step 206). In some embodiments, the HFM 115 may perform steps 208 and 210 when exiting the rear camera mode. If the HFM 115 determines that the operation mode of the in-vehicle head unit 112 is different from the rear camera mode (the 'NO' direction in step 206), the HFM 115 is checked on the touch panel 122 in step 208 The screen can be displayed. It should be noted that in some cases, such as when the user has just entered the vehicle, for example, a confirmation screen may be displayed when the touch panel 122 of the head unit is started after the vehicle is started.

Returning to FIG. 3, there is shown an exemplary pop-up display screen 300 that is displayed upon entering the vehicle and turning on the ignition switch while the customer is engaged in an active call according to an embodiment of the present invention. 3 shows the physical display screen of the touch panel 122. In Fig. In an exemplary embodiment, the user may be guided by the pop-up display screen 300 with the message " Switch to Hands-Free ", where the user may select either "Yes" 302 or ≪ RTI ID = 0.0 > a " soft " According to an embodiment of the present invention, the user can initiate transmission of audio signals from the portable device 102 to the hands-free device 126 by selecting the "Yes" In other embodiments, a switch on the steering wheel or instrument panel can be utilized, as well as a physical knob, such as a frequency knob and / or a sound knob, that the user manipulates and provides their selection. In another embodiment, the user may indicate their desire to transmit the phone to the hands-free device 126 by pressing a pre-programmed hot key on the portable device 102. [

Referring again to FIG. 2, in step 210, the HFM 115 may determine whether the user wishes to send a subsequent call to the hands-free device 126 by checking whether the "Yes" have. It should be noted that in some embodiments, the HFM 115 may display the pop-up display screen 300 with a message "Do you want to switch the phone hands-free?" For a preset time period. The display screen 300 may disappear after a preset time if the user does nothing. In one embodiment, the predetermined time may range from about 20 seconds to about 30 seconds. The HFM 115 in step 212 responds to receiving a response that the user wishes not to send a telephone call and / or does not receive a response for a predetermined time (step 210 in the 'no' direction) The Bluetooth connection request message received from the portable device 102 in the private mode, as well as the subsequent Bluetooth connection request message sent from the portable device 102 while the HFM 115 is operating in private mode.

According to an embodiment of the present invention, if the user is not interested in sending a phone call that is ongoing to the hands-free device 126, the HFM 115 starts the privacy mode in step 214. [ If the HFM 115 is operating in the privacy mode, no other passenger in the vehicle can hear the conversation between the user and the other parties. That is, while the HFM 115 is in the privacy mode, conversations between the user and other parties on other telephones are not broadcast through speakers in the vehicle. Next, in step 216, the HFM 115 may display a message indicating a privacy mode. FIG. 4 illustrates an exemplary pop-up screen 400 that is displayed on the physical touch panel 122 when the HFM 115 enters the privacy mode in accordance with an embodiment of the present invention. In the non-limiting example of FIG. 4, the display screen 400 may include a "privacy mode" message and may include at least one soft button 402. If the phone call ends while the HFM 115 is in the privacy mode, the HFM 115 may return to the previously displayed screen (i.e., the screen that was displayed before entering the privacy mode).

When the user of the portable device 102 desires to switch to the hands-free mode (for example, when he / she wants to transmit a telephone call to the hands-free device 126), the user can select a soft button 402 called " By choosing to start sending these phone calls. In another embodiment, the user may manipulate a switch, such as a frequency knob and / or a sound knob, attached to the touch panel 122, or one or more physical knobs to switch to the hands- Pre-programmed hot keys can be pressed. Referring again to FIG. 2, in response to detecting a user's request to transmit a telephone call to the hands-free device 126 (step 218, Yes direction) or in response to receiving a confirmation of the user at step 210 The HFM 115 may establish a connection with the portable portable device 102 in response to the connection request received in step 202. In this case, Once the Bluetooth connection is established, the HFM 115 may transmit the audio signal associated with the active telephone call from the portable device 102 to the handsfree device 126 (step 222) and enter the hands-free mode.

Figures 5 (a) -5 (b) illustrate exemplary screen shots that may be displayed by the HFM 115 after an audio signal transmission occurs, in accordance with an embodiment of the present invention. The first exemplary phone mode screen 500 (shown in FIG. 5 (a)) may be displayed when activation of both communications between the user's portable device 102 and the other party has already taken place. A second exemplary phone mode screen 501 (shown in FIG. 5 (b)) may be displayed prior to establishing two-way communication between the portable device 102 and other parties. The first and second screens 500 and 501 may provide information related to the telephone conversation being performed. For example, as shown in FIG. 5 (a), the phone mode screen 500 preferably displays information related to the name and phone number of the sending / receiving party along with the phone call duration. Further, the second phone mode screen 501 preferably displays a message 506 informing that the HFM 115 is establishing bilateral communication with the calling party.

In accordance with an embodiment of the present invention, the HFM module 115 cooperates with the portable device 102 to place and receive calls and manages hard buttons, soft buttons, and various display screens associated with actions related to the phone. Actions relating to telephony may include telephone initiation, telephone control and audio control categories. Thus, in order to support these behaviors, the HFM 115 may provide a plurality of soft (programmed) buttons 504 on the phone mode screens 500, 501. Soft buttons provided by the HFM 115 for telephone and audio control purposes may include call termination, HFM mute and privacy mode buttons. For example, if the user does not want a passenger in the vehicle to hear a portion of the conversation, the user can select the privacy mode button 504a to enable the privacy mode. In response, the HFM 115 may prevent the conversation from being broadcast to passengers in the vehicle.

In view of the foregoing, a method for controlling the transmission of an audio signal from a portable device to a hands-free device in a vehicle multimedia system can overcome the inconvenience caused by the automatic transmission of an active call between the portable device and the hands-free device. In particular, according to various embodiments of the present invention, transmission of an audio signal associated with an active call can only be initiated when the user's input is received (such as confirmation of the user's decision to use hands-free operation).

In the foregoing description, it is to be understood that the disclosed embodiments have been described with reference to specific examples, but that various changes may be made without departing from the scope of the disclosure. Accordingly, the scope of the present disclosure is not limited to the embodiments described above, but may be defined by the appended claims and their equivalents. In view of the foregoing description, it is to be understood that, if modifications and variations of the embodiments are included in the scope of the following claims and their equivalents, the disclosure is to include such modifications and variations.

Claims (19)

A method for controlling audio signal transmission from a portable device to a hands-free device in a vehicle multimedia system,
Receiving a request from a portable device for connection to a hands-free device by a processor of a vehicle multimedia system;
Determining whether the portable device is involved in an active call by the processor;
Displaying an acknowledgment message for confirming whether the user desires to transmit the audio signal related to the active call to the hands-free device in response to the determination that the portable device is involved in the active call; And
Transmitting the audio signal from the portable device to the hands-free device in response to receiving a confirmation of the user to transmit an active call;
≪ / RTI > The method according to claim 1,
Wherein the hands-free device is adapted to communicate with the portable device via a Bluetooth communication channel. The method according to claim 1,
Further comprising refusing the connection request to the hands-free device by the processor in response to receiving the disapproval of the active call transfer of the user. The method according to claim 1,
Waiting for a response from the user for a time set by the processor after displaying the confirmation message and refusing the connection request to the handsfree device by the processor if the user's response is not received during the set time Methods of inclusion. The method of claim 3,
Further comprising displaying a message indicating that the hands-free device is operating in privacy mode. 6. The method of claim 5,
Wherein displaying the message further comprises displaying a soft button to provide the user with an opportunity to begin transmitting the audio signal from the portable device to the hands-free device while the hands-free device is operating in the privacy mode. The method according to claim 6,
Further comprising transmitting the audio signal from the portable device to the hands-free device in response to the user's selection of the soft button while the hands-free device operates in the privacy mode. The method according to claim 1,
When the vehicle multimedia system is operating in the rear camera mode, the confirmation message is not displayed. A computer program medium for controlling transmission of an audio signal from a portable device to a hands-free device in a vehicle multimedia system,
A plurality of program instructions stored in at least one of the one or more computer readable storage devices and the one or more computer readable storage devices,
The plurality of program instructions
A program instruction for receiving a request for connection from the portable device to the hands-free device;
A program instruction for determining whether the portable device is involved in an active call;
A program instruction for displaying a confirmation message for confirming whether the user desires to transmit the audio signal related to the active call to the hands-free device; And
A program instruction for transmitting the audio signal from the portable device to the hands-free device;
≪ / RTI > 10. The method of claim 9,
Wherein the hands-free device is adapted to communicate with a portable device via a Bluetooth communication channel. 10. The method of claim 9,
And responsive to receiving the disapproval of the user's active call transmission, rejecting a connection request to the hands-free device. 10. The method of claim 9,
A program instruction for waiting for a user's response for a set time and a program command for refusing a connection request to the hands-free device if the user's response is not received during the set time. 12. The method of claim 11,
Further comprising program instructions for displaying a message informing that the hands-free device is operating in privacy mode. 14. The method of claim 13,
Computer program instructions for displaying a message include program instructions for displaying a soft button to provide a user with an opportunity to initiate transmission of an audio signal from a portable device to a hands free device while the hands- . 15. The method of claim 14,
Further comprising program instructions for transmitting an audio signal from the portable device to the hands-free device in response to a selection of a soft button of a user while the hands-free device is operating in the privacy mode. 10. The method of claim 9,
When the vehicle multimedia system is operating in the rear camera mode, the confirmation message is not displayed. In a vehicle multimedia system,
Receiving and converting an audio signal received from a portable device through a Bluetooth communication channel, and transmitting the converted audio signal to a speaker system connected to the audio system and transmitting the audio signal to the audio system for subsequent audio transmission, A hands-free device adapted to receive, convert and transmit a voice signal of a user to a portable device via a Bluetooth communication channel for subsequent audio transmission; And
The mobile device receives a request for connection to the hands-free device from the portable device, determines whether the portable device is involved in the active call, and transmits an audio signal related to the active call to the hands- A controller configured to display a confirmation message to confirm that the user desires to transmit and to transmit an audio signal from the portable device to the hands-free device in response to receiving a confirmation of the user to transmit the active call;
The vehicle multimedia system. 18. The method of claim 17,
And responsive to receiving the disapproval of a user's active call transmission, the controller is configured to reject the connection request to the hands-free device. 18. The method of claim 17,
Wherein the controller is configured to wait for a user's response for a predetermined time, and to reject a connection request to the hands-free device if the user's response is not received during the set time.

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