WO2019170336A1 - Method, device and system for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device in a vehicle multimedia system - Google Patents

Method, device and system for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device in a vehicle multimedia system Download PDF

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Publication number
WO2019170336A1
WO2019170336A1 PCT/EP2019/052730 EP2019052730W WO2019170336A1 WO 2019170336 A1 WO2019170336 A1 WO 2019170336A1 EP 2019052730 W EP2019052730 W EP 2019052730W WO 2019170336 A1 WO2019170336 A1 WO 2019170336A1
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WO
WIPO (PCT)
Prior art keywords
hands
call
vehicle
free
user
Prior art date
Application number
PCT/EP2019/052730
Other languages
French (fr)
Inventor
Bo Fu
Original Assignee
Bayerische Motoren Werke Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke Aktiengesellschaft filed Critical Bayerische Motoren Werke Aktiengesellschaft
Publication of WO2019170336A1 publication Critical patent/WO2019170336A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • H04M1/6041—Portable telephones adapted for handsfree use
    • H04M1/6075—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle
    • H04M1/6083—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle by interfacing with the vehicle audio system
    • H04M1/6091—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle by interfacing with the vehicle audio system including a wireless interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/48—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for in-vehicle communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/02—Details of telephonic subscriber devices including a Bluetooth interface

Definitions

  • the present invention relates to a system for connecting a portable wireless device to a vehicle network, and more specifically relates to a method, device and system for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device in a vehicle multimedia system.
  • An exemplary hands-free device in an early stage comprises a wired device that is mounted on a base of a mobile phone.
  • Bluetooth technology has been applied to these devices, so that even when the mobile phone is left in, for example, a bag or a pocket, it is also possible to answer a call.
  • Bluetooth is a short-range wireless communication technology derived from IEEE Specification 802.15.1 , which enables electronic devices (e.g., wireless terminals located within approximately 10 meters) in wireless communication with each other in a manner of low cost and low power.
  • the existing Bluetooth hands-free technology When a call function of a mobile phone is in use, the existing Bluetooth hands-free technology outputs an audio signal transmitted from a paired mobile phone or MP3 player through a speaker provided in the vehicle, and transmits to the mobile phone a voice signal of a user input through a microphone provided in the vehicle.
  • a conventional Bluetooth specification is defined such that it conducts an automatic connection upon receiving a request for connection and automatically disconnects upon receiving a request for releasing the connection.
  • the call may always be automatically transferred to the hands-free device of the on-board communication system, and such automatic transfer probably results in leakage of the user’s privacy.
  • the user’s mobile phone has been connected to the onboard communication system via Bluetooth.
  • the call is automatically transferred to the hands-free device of the onboard communication system. If there are other passengers within the vehicle at this time, other passengers may also hear the content of the call.
  • the contact dials the user’s personal mobile phone, and does not know that the user is talking through the hands-free device of the onboard communication system, so that it is possible that the contact may unintentionally reveal some secret information to other passengers with in the vehicle during the call. Such automatic transfer may result in a poor user experience.
  • the present invention provides a method for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device in a vehicle multimedia system, the method comprising the following steps: - receiving a request from a mobile device of a user to connect to a hands-free device;
  • the voice prompt message may be generated by a Text to Speech (TTS) / speech synthesizer.
  • TTS Text to Speech
  • the method after the step“transferring an audio signal of a call from the mobile device to the hands-free device”, further comprises sending a prompt message to the user to prompt that the call will be performed by the hands-free device.
  • the step“sending a prompt message to the calling object to prompt that the call will be performed by the hands-free device” further comprises:
  • the present invention also provides a device for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device in a vehicle multimedia system, the device comprising the following modules:
  • determining module for determining whether the mobile device has accessed an effective call with a calling object
  • a transferring module for, if it is determined that the mobile device has accessed the effective call with the calling object, transferring an audio signal of the call from the mobile device to the hands-free device;
  • the device further comprises a second prompting module, for sending a prompt message to the user to prompt that the call will be performed by the hands-free device.
  • the prompting module is further used for:
  • the present invention also provides a vehicle multimedia system, which comprises: a memory in which computer-executable instructions are stored; a processor which is configu red to execute the computer-executable instructions; the aforementioned device for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device; wherein the computer-executable instructions when executed by the processor, make the device for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device perform the steps of the aforementioned method according to the present invention.
  • the present invention further provides a vehicle, which comprises the aforementioned vehicle multimedia system.
  • the present invention further provides a computer readable storage medium having executable instructions which, when executed, prompt a computer to perform the method according to the present invention.
  • the vehicle multimedia system sends a prompt message to the calling object to prompt the counterpart that the call will be performed by the onboard hands-free device.
  • the contact may hear a voice prompt“The counterpart is talking with an onboard hands-free device, and you are kindly reminded to keep clear of secret information” during the call.
  • the contact may know that it is not a private calling environment at this moment, while the user is talking through the hands-free device of the onboard communication system (it is possible that there are other passengers within the vehicle). Thus, it avoids revealing secret information to other passengers within the vehicle during the call.
  • FIG. 1 is a block diagram of an exemplary operation environment according to an embodiment of the present invention
  • the meaning of the expression“and/or” used herein is to include at least one of the components listed before and after the expression.
  • the meaning of the expression“connection/coupling” used is to include direct connection with another component or indirect connection through another component.
  • the singular forms herein also include the plural forms, unless particularly mentioned in the wording.
  • the meaning of the components, steps, operations, and elements used herein which involve“comprising” or“containing”, is to be present with or add at least one other component, step, operation, and element.
  • vehicle or“of vehicle” or other similar terms as used herein generally comprise motor vehicles, for example including sport utility vehicles (SUVs), large buses, large trucks, and passenger vehicles of various commercial vehicles, comprises various boats, ship vessels, aircrafts and the like, and comprises hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen powered vehicles and other alternative fuel vehicles (for example, fuels from sources other than petroleum).
  • a hybrid vehicle is a vehicle having two or more sources of power, such as a vehicle incorporating both gasoline power and electric power.
  • the phrase“vehicle (onboard) multimedia system” means an integrated information system with wireless communication capabilities. These systems are sometimes referred to as in-vehicle information systems and are typically integrated with telematics services, entertainment systems, and/or navigation systems.
  • controller refers to a hardware device that includes a memory and a processor.
  • the memory is configured to store program instructions
  • the processor is configured to execute the program instructions to perform one or more of the processes described further below.
  • One aspect of the present invention is dependent on a Bluetooth protocol for establishing wireless connection between one of the modules connected to the vehicle network and a mobile device at a remote location. If a telephone conversation occurs, wireless connection may be used to transfer the audio sig nal associated with the telephone conversation to the vehicle network, thereby continuing the conversation using the hands-free module in the vehicle.
  • wireless connection may be used to transfer the audio sig nal associated with the telephone conversation to the vehicle network, thereby continuing the conversation using the hands-free module in the vehicle.
  • the telephone conversation may be automatically performed in the vehicle in a hands-free manner. The user initiates a Bluetooth call by pressing a button or performing any other operation that embodies the user’s intention.
  • the automatic transfer of the audio signal probably results in revealing personal secret information of the user of the vehicle.
  • the user’s mobile phone has been connected to the onboard communication system via Bluetooth.
  • the call is automatically transferred to the hands-free device of the onboard communication system.
  • the contact dials the user’s personal mobile phone, so that the contact does not know that the user is talking through the hands-free device of the onboard communication system.
  • the contact believes that the user is talking to himself through a personal mobile phone, and may possibly involve some secret information during the call with the user, which secret information is revealed to other passengers within the vehicle through the onboard hands-free device.
  • the vehicle mentioned below comprises a Bluetooth communication module for connecting to the terminal via Bluetooth.
  • the communication link described herein may connect these devices directly or indirectly.
  • the network 70 may be a wireless communication network, such as a cellular network (including multiple base stations, and controllers), a core network (generally including multiple switching entities and gateways), and one or more other networks, such as but not limited to Internet, Public Switched Telephone Network (PSTN), Packet Switched Network, Frame Relay Network, Optical Network and/or other types of networks.
  • PSTN Public Switched Telephone Network
  • Packet Switched Network Packet Switched Network
  • Frame Relay Network Optical Network and/or other types of networks.
  • the in-vehicle head unit 20 and the mobile device 50 that has enabled Bluetooth may communicate with each other via a communication link 40 (e.g., a Bluetooth link).
  • the in-vehicle head unit 20 may comprise: a receiving module 21 , for receiving a request from a mobile device of a user to connect to a hands-free device; a determining module 22, for determining whether the mobile device has accessed an effective call with a calling object; a transferring module 23, for, if it is determined that the mobile device has accessed the effective call with the calling object, transferring an audio signal of the call from the mobile device to the hands-free device; and a prompting module 24, for sending a prompt message to the calling object to prompt that the call will be performed by the hands-free device.
  • the vehicle head unit 20 may be part of a multimedia system of the vehicle, which includes a memory/storage area, a processor, and a communication unit.
  • the in-vehicle head unit 20 may also include peripheral devices such as a display, a control button, a hands-free calling device 30, and the like.
  • the user may establish a communication connection between the mobile device 50 and the vehicle head unit 20 by enabling Bluetooth.
  • the mobile device 50 has an operation system, and may include various applications integrated in the operation system or stored in the memory/storage area and executed by the processor. Examples of the mobile device 50 include, for example, a cellular telephone, a personal digital assistant (PDA), a smart phone, a pocket personal computer (PC), a notebook computer, a tablet computer, a smart watch, or other devices that have a processor, communication capabilities and are easy to carry. In a common form, an application of a mobile device may be part of a larger series of vehicle features and interactions.
  • the mobile device 50 includes a communication unit, a memory unit device, and a processor.
  • the embodiment provides a management tool for the connection between the mobile device 50 and the in-vehicle head unit 20.
  • the communication management tool is implemented as a software that may be installed in the mobile device 50 and the in-vehicle head unit 20.
  • the software is able to establish new connections or open existing connections, and to direct communication through any application communication, so as to provide a high quality experience for the user.
  • a communication manager is installed in the mobile device 50, and a hands-free manager (HFM) may be installed in the in-vehicle head unit 20 and may be configured to manage the connection 40.
  • the communication manager and HFM may initiate the connection and manage the transfer of media over a Bluetooth communication channel 40.
  • the hands-free manager preferably provides support for hands-free processing.
  • the hands-free manager implements a Bluetooth protocol stack for connecting to a Bluetooth compatible hands-free device, such as a Bluetooth headset and Bluetooth onboard kits.
  • the hands-free manager implements a Bluetooth headset configuration profile and/or a Bluetooth hands-free configuration profile.
  • the hands-free manager enables the hands-free unit to act as an audible relay for IP video calls and for audio-only cellular calls over the network, and perform other hands-free services. For example, for an IP video call, the audio portion of the call may be sent through the hands-free unit instead of the speaker of the mobile device 50, while the video portion of the call is still displayed by the mobile device 50 (or by the attached display).
  • the hands-free unit may also include a microphone to capture audio information, which is then sent to the mobile device 50.
  • the user may use the hands-free unit of the in-vehicle head unit 20 to speak and/or listen to the audio during the IP video call and/or the audio-only cellular call.
  • At least the audio signal associated with the call may be automatically transferred to the hands-free device 30 after connection is established between the mobile device 50 and the in-vehicle head unit 20 regardless of the user’s intention.
  • the device for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device in a vehicle multimedia system comprises the following modules:
  • a receiving module 21 for receiving a request from a mobile device of a user to connect to a hands-free device
  • determining module 22 for determining whether the mobile device has accessed an effective call with a calling object
  • a transferring module 23 for, if it is determined that the mobile device has accessed the effective call with the calling object, transferring an audio signal of the call from the mobile device to the hands-free device;
  • a prompting module 24 for sending a prompt message to the calling object to prompt the calling object that the call will be performed by the hands-free device.
  • the hands-free device communicates with the mobile device via a Bluetooth communication channel.
  • the prompt message sent to the calling object is a voice prompt message.
  • the prompting module 24 is further used for: determining if there are other passengers than the user within the vehicle. If there are other passengers than the user within the vehicle, the prompting module 24 sends a prompt message to the calling object to prompt that the call will be performed by the hands-free device.
  • the means for transferring an audio signal further includes a second prompting module, for sending a second prompt message to the user to prompt that the call will be performed by the hands-free device.
  • the second prompt information may be text information, and the text may be displayed to the user through a display of the onboard multimedia system.
  • the second prompt information may also be speech information, and the speech may be played to the user through the speaker of the onboard multimedia system.
  • each of the aforementioned modules may be or may include any type of computing means, a calculation circuit or any type of processor or a processing circuit capable of executing a series of instructions stored in the memory.
  • Each of the modules may include a plurality of processors and/or a multi-core central processing unit (CPU) and may comprise any type of processor, such as a microprocessor, a digital signal processor, a microcontroller, and the like.
  • Each of the modules may further include a memory to store data and/or program codes to execute a series of instructions.
  • each of the modules may be or may include a separate controller, and may also be part of a central controller of the vehicle.
  • FIG. 2 is a flow chart of the operational steps of a module for transferring an audio signal of FIG. 1 in accordance with an illustrative embodiment of the present invention.
  • the flow chart shown here is depicted by way of example with reference to the assemblies shown in FIG. 1 , but these operational steps may be performed in any system, and not limited to the aforementioned scenarios shown in the drawings.
  • the flow chart in FIG. 2 shows an example in which the operational steps are performed in a particular sequence, as indicated by the lines connecting the blocks, but the various steps shown in the drawing may be performed in any sequence or in any combination or sub-combination. It should be understood that in some embodiments, some of the following steps may be combined into a single step.
  • the in-vehicle head unit 20 may include a Bluetooth interface.
  • the in-vehicle head unit 20 receives a request from a mobile device 50 of a user to connect to a hands-free device.
  • the in-vehicle head unit 20 determines whether the mobile device has accessed an effective call with a calling object.
  • the term“phone call” as used herein is generally synonymous with“voice call”, unless otherwise indicated.
  • the term “effective call” as used herein may mean an effective condition of bidirectional communication, to establish bidirectional communication, or to be performing bidirectional communication.
  • the user of the mobile device 50 may make a phone call to the calling object 60 in an attempt to establish bidirectional communication.
  • the user of the mobile device 50 receives a call made by the calling object 60.
  • the call usually refers to voice communication, and may also include communication other than voice, such as video calls, text messages, chats, video chats, and the like.
  • the in-vehicle head unit 20 transfers an audio signal of the call from the mobile device 50 to the hands-free device 30.
  • the in-vehicle head unit 20 sends a prompt message to the calling object to prompt that the call will be performed by the hands-free device.
  • the in-vehicle head unit 20 sends a prompt message to the calling object 60 to prompt that the call will be performed by the hands-free device.
  • the in-vehicle head unit 20 sends a voice prompt to the calling object 60 in the audio signal of the call, for example,“The counterpart is talking with an onboard hands-free device, and you are kindly reminded to keep clear of secret information”.
  • the calling object may know that the user is talking through the hands-free device of the onboard communication system at this moment, thereby avoiding revealing secret information to other passengers within the vehicle during the call.
  • the in-vehicle head unit 20 may send the voice prompt to the calling object 60 via the Bluetooth connection 40 and the voice call link between the mobile device 50 and the calling object 60.
  • the voice prompt may also be sent to the calling object 60 by the connection 71 between the in-vehicle head unit 20 and the network 70 and the connection 73 between the network 70 and the calling object 60.
  • the voice prompt message may be generated by a Text to Speech (TTS).
  • TTS Text to Speech
  • the method of the present invention after the step“transferring an audio signal of a call from the mobile device to the hands-free device”, further comprises sending a second prompt message to the user to prompt that the call will be performed by the hands-free device.
  • the second prompt information may be text information, and the text may be displayed to the user through a display of the onboard multimedia system.
  • the second prompt information may also be speech information, and the speech may be played to the user through the loudspeaker of the onboard multimedia system.
  • the embodiment of the present invention also provides a vehicle multimedia system comprising the aforementioned in-vehicle head unit 20 and a vehicle comprising the vehicle multimedia system.
  • the present invention also provides a computer readable storage medium having executable instructions which, when executed, prompt a computer to perform the method according to the present invention.
  • the present invention may also relate to a computer program product that, when loaded and executed on a computer, causes the method according to the present invention.
  • the memory may include, but is not limited to, a disk drive, an optical storage device, a solid state memory, a floppy disk, a soft floppy disk, a hard disk, a magnetic tape or any other magnetic medium, an optical disk or any other optical medium, ROM (Read Only Memory), RAM ( Random Access Memory), a cache memory and/or any other memory chip or cartridge and/or any other medium from which the computer may read data, instructions and/or codes.
  • the processor may include a central processing unit (CPU), a graphics processing unit (GPU), an application-specific integrated circuit (ASIC), an integrated circuit (IC), a system on chip (SOC), a programmable logic element or a field programmable gate array (FPGA) with a microprocessor.
  • CPU central processing unit
  • GPU graphics processing unit
  • ASIC application-specific integrated circuit
  • IC integrated circuit
  • SOC system on chip
  • FPGA field programmable gate array
  • the computer readable storage medium may be machine readable or computer readable.
  • the computer readable storage medium includes a data carrier having executable instructions that are capable of so cooperating with a programmable computer system or a programmable hardware assembly, such as to implement one of the methods described here.
  • a embodiment is a data carrier, a digital storage medium or a computer readable storage medium, on which there is recorded a program for implementing one of the methods described herein.
  • the embodiments of the present invention may generally be implemented as a program, a firmware, a computer program, or computer program product with program codes, or as data, wherein the program codes or data effectively implements the aforementioned method when the program runs on a processor or a programmable hardware assembly.
  • the program codes or data may, for example, also be stored on a machine readable carrier or a data carrier.
  • Program codes or data may additionally be present as source codes, machine codes or byte -codes, and as other intermediate codes.
  • another embodiment is a data stream, a signal order, or a signal sequence, which is a program for implementing one of the methods described herein.
  • the data stream, signal order or signal sequence may, for example, be configured for transmission via a data communication connection, such as via Internet or other networks.
  • the embodiment may also be a signal sequence representing data, which is adapted to be sent via a network or data communication connection, wherein the data is a program.
  • the vehicle multimedia system sends a prompt message to the calling object to prompt the counterpart that the call will be performed by the onboard hands-free device. For example, at the beginning of the call, the contact may hear a voice prompt“The counterpart is talking with an onboard hands-free device, and you are kindly reminded to keep clear of secret information” during the call.
  • the contact may know that it is not a private calling environment at this moment, while the user is talking through the hands-free device of the onboard communication system (it is possible that there are other passengers within the vehicle).
  • it avoids revealing secret information to other passengers within the vehicle during the call.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Telephone Function (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention relates to a method for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device in a vehicle multimedia system, the method comprising the following steps: receiving (101) a request from a mobile device (50) of a user to connect to a hands-free device (30); determining (102) whether the mobile device (50) has accessed an effective call with a calling object (60); if it is determined that the mobile device (50) has accessed the effective call with the calling object (60), transferring (103) an audio signal of the call from the mobile device (50) to the hands-free device (30); and sending (104) a prompt message to the calling object (60) to prompt the calling object (60) that the call will be performed by the hands-free device (30). The present invention also relates to a device for controlling transfer of an audio signal from a mobile communication device to an on -board hands-free device in a vehicle multimedia system, a vehicle multimedia system, and a vehicle.

Description

DESCRIPTION
METHOD, DEVICE AND SYSTEM FOR CONTROLLING TRANSFER OF AN AUDIO
SIGNAL FROM A MOBILE COMMUNICATION DEVICE TO AN ON-BOARD
HANDS-FREE DEVICE IN A VEHICLE MULTIMEDIA SYSTEM
TECHNICAL FIELD
The present invention relates to a system for connecting a portable wireless device to a vehicle network, and more specifically relates to a method, device and system for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device in a vehicle multimedia system.
BACKGROUND ART
It is well known that answering a call during driving may distract a driver’s attention. In order to prevent this, a hands-free method for answering a call is widely used in an on-board multimedia system, so that the driver can concentrate on driving by freeing hands when answering a call.
An exemplary hands-free device in an early stage comprises a wired device that is mounted on a base of a mobile phone. In recent years, Bluetooth technology has been applied to these devices, so that even when the mobile phone is left in, for example, a bag or a pocket, it is also possible to answer a call. Bluetooth is a short-range wireless communication technology derived from IEEE Specification 802.15.1 , which enables electronic devices (e.g., wireless terminals located within approximately 10 meters) in wireless communication with each other in a manner of low cost and low power. When a call function of a mobile phone is in use, the existing Bluetooth hands-free technology outputs an audio signal transmitted from a paired mobile phone or MP3 player through a speaker provided in the vehicle, and transmits to the mobile phone a voice signal of a user input through a microphone provided in the vehicle. A conventional Bluetooth specification is defined such that it conducts an automatic connection upon receiving a request for connection and automatically disconnects upon receiving a request for releasing the connection. For Bluetooth technology integrated in the vehicle, the call may always be automatically transferred to the hands-free device of the on-board communication system, and such automatic transfer probably results in leakage of the user’s privacy. For example, the user’s mobile phone has been connected to the onboard communication system via Bluetooth. In the case where the user receives a call from a contact at this time, when the call is answered, the call is automatically transferred to the hands-free device of the onboard communication system. If there are other passengers within the vehicle at this time, other passengers may also hear the content of the call. Although the user himself knows that the call is made in an onboard hands-free manner, the contact dials the user’s personal mobile phone, and does not know that the user is talking through the hands-free device of the onboard communication system, so that it is possible that the contact may unintentionally reveal some secret information to other passengers with in the vehicle during the call. Such automatic transfer may result in a poor user experience.
CONTENT OF THE INVENTION
It is an object of various embodiments of the present invention to provide a method and device for controlling transfer of an audio signal from a mobile communication device to a hands-free device, as well as a vehicle multimedia system, whereby it is possible to avoid revealing secret information of a user during a call, and bring great convenience to the user and at the same time also im prove driving safety of the user.
In order to solve the above-described problem, the present invention provides a method for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device in a vehicle multimedia system, the method comprising the following steps: - receiving a request from a mobile device of a user to connect to a hands-free device;
- determining whether the mobile device has accessed an effective call with a calling object;
- if it is determined that the mobile device has accessed the effective call with the calling object, transferring an audio signal of the call from the mobile device to the hands-free device; and
- sending a prompt message to the calling object to prompt that the call will be performed by the hands-free device.
According to the present invention, first of all, the user’s mobile phone is connected to the onboard communication system via Bluetooth. In the case where the user receives a call from a contact (or make a call to a contact) at this time, when the call is answered, the call is automatically transferred to the hands-free device of the onboard communication system. Then, a prompt message is sent to the calling object to prompt that the call will be performed by the hands-free device. For example, at the beginning of the call, the contact may hear a voice prompt“The counterpart is talking with a hands-free device, and you are kindly reminded to keep clear of secret information” during the call. In this way, the contact may know that the user is talking through the hands-free device of the onboard communication system, thereby avoiding revealing secret information to other passengers within the vehicle during the call.
Optionally, the hands-free device is configured to communicate with the mobile device over a Bluetooth communication channel.
Optionally, the prompt message sent to the calling object is a voice prompt message.
Optionally, the voice prompt message may be generated by a Text to Speech (TTS) / speech synthesizer.
Optionally, the method, after the step“transferring an audio signal of a call from the mobile device to the hands-free device”, further comprises sending a prompt message to the user to prompt that the call will be performed by the hands-free device.
Optionally, the step“sending a prompt message to the calling object to prompt that the call will be performed by the hands-free device” further comprises:
- determining if there are other passengers than the user within the vehicle;
- if there are other passengers than the user within the vehicle, sending a prompt message to the calling object to prompt that the call will be performed by the hands-free device.
In order to solve the above-described problem, the present invention also provides a device for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device in a vehicle multimedia system, the device comprising the following modules:
- a receiving module, for receiving a request from a mobile device of a user to connect to a hands-free device;
- a determining module, for determining whether the mobile device has accessed an effective call with a calling object;
- a transferring module, for, if it is determined that the mobile device has accessed the effective call with the calling object, transferring an audio signal of the call from the mobile device to the hands-free device; and
- a prompting module, for sending a prompt message to the calling object to prompt that the call will be performed by the hands-free device.
Optionally, the hands-free device is configured to communicate with the mobile device over a Bluetooth communication channel.
Optionally, the prompt message sent to the calling object is a voice prompt message.
Optionally, the voice prompt message may be generated by a Text to Speech (TTS).
Optionally, the device further comprises a second prompting module, for sending a prompt message to the user to prompt that the call will be performed by the hands-free device. Optionally, the prompting module is further used for:
- determining if there are other passengers than the user within the vehicle;
- if there are other passengers than the user within the vehicle, sending a prompt message to the calling object to prompt that the call will be performed by the hands-free device.
In order to solve the above-described problem, the present invention also provides a vehicle multimedia system, which comprises: a memory in which computer-executable instructions are stored; a processor which is configu red to execute the computer-executable instructions; the aforementioned device for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device; wherein the computer-executable instructions when executed by the processor, make the device for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device perform the steps of the aforementioned method according to the present invention.
In order to solve the above-described problem, the present invention further provides a vehicle, which comprises the aforementioned vehicle multimedia system.
In order to solve the above-described problem, the present invention further provides a computer readable storage medium having executable instructions which, when executed, prompt a computer to perform the method according to the present invention.
As described above, in the case where the user within the vehicle receives a call from a contact (or make a call to a contact), when the call is answered, the call is automatically transferred to the hands-free device of the onboard communication system. According to the present invention, the vehicle multimedia system sends a prompt message to the calling object to prompt the counterpart that the call will be performed by the onboard hands-free device. For example, at the beginning of the call, the contact may hear a voice prompt“The counterpart is talking with an onboard hands-free device, and you are kindly reminded to keep clear of secret information” during the call. In this way, the contact may know that it is not a private calling environment at this moment, while the user is talking through the hands-free device of the onboard communication system (it is possible that there are other passengers within the vehicle). Thus, it avoids revealing secret information to other passengers within the vehicle during the call.
In the entire process, there is no need to distract the user’s attention to the operation interface of the onboard communication system, by inputting instructions, let alone by manual operation. It brings great convenience to the user and also improves the safety of the travel. BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a block diagram of an exemplary operation environment according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device according to an embodiment of the present invention.
EMBODIMENTS
In order to make the aforementioned object, features and advantages of the present invention more apparent and understandable, detailed explanations are made to the specific embodiments of the present invention in combination with the drawings as follows.
In the following description, specific details are set forth in order to facilitate an adequate understanding of the present invention. However, the present invention can be implemented in multiple manners other than those described herein, and those skilled in the art may make similar promotion without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.
The meaning of the expression“and/or” used herein is to include at least one of the components listed before and after the expression. Moreover, the meaning of the expression“connection/coupling” used is to include direct connection with another component or indirect connection through another component. The singular forms herein also include the plural forms, unless particularly mentioned in the wording. Also, the meaning of the components, steps, operations, and elements used herein which involve“comprising” or“containing”, is to be present with or add at least one other component, step, operation, and element.
It should be understood that the terms“vehicle” or“of vehicle” or other similar terms as used herein generally comprise motor vehicles, for example including sport utility vehicles (SUVs), large buses, large trucks, and passenger vehicles of various commercial vehicles, comprises various boats, ship vessels, aircrafts and the like, and comprises hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen powered vehicles and other alternative fuel vehicles (for example, fuels from sources other than petroleum). As mentioned herein, a hybrid vehicle is a vehicle having two or more sources of power, such as a vehicle incorporating both gasoline power and electric power.
As used herein, the phrase“vehicle (onboard) multimedia system” means an integrated information system with wireless communication capabilities. These systems are sometimes referred to as in-vehicle information systems and are typically integrated with telematics services, entertainment systems, and/or navigation systems.
Further, it should be understood that the following method for controlling transfer of an audio signal may be performed by at least one controller. The term“controller” refers to a hardware device that includes a memory and a processor. The memory is configured to store program instructions, and the processor is configured to execute the program instructions to perform one or more of the processes described further below.
One aspect of the present invention is dependent on a Bluetooth protocol for establishing wireless connection between one of the modules connected to the vehicle network and a mobile device at a remote location. If a telephone conversation occurs, wireless connection may be used to transfer the audio sig nal associated with the telephone conversation to the vehicle network, thereby continuing the conversation using the hands-free module in the vehicle. Currently, when a person (“user”) uses a wireless device to conduct a telephone conversation within the vehicle, the telephone conversation may be automatically performed in the vehicle in a hands-free manner. The user initiates a Bluetooth call by pressing a button or performing any other operation that embodies the user’s intention. However, at least in some cases, the automatic transfer of the audio signal probably results in revealing personal secret information of the user of the vehicle. For example, the user’s mobile phone has been connected to the onboard communication system via Bluetooth. In the case where the user receives a call from a contact at this time, when the call is answered, the call is automatically transferred to the hands-free device of the onboard communication system. At this time, there are other passengers within the vehicle, who may also hear the content of the call. Although the user himself knows that the call is being made by an onboard hands-free device, the contact dials the user’s personal mobile phone, so that the contact does not know that the user is talking through the hands-free device of the onboard communication system. Thus, the contact believes that the user is talking to himself through a personal mobile phone, and may possibly involve some secret information during the call with the user, which secret information is revealed to other passengers within the vehicle through the onboard hands-free device.
Various embodiments of the present invention are dedicated to eliminating the aforementioned inconvenience of the user by optimizing the audio transfer process. Hereinafter, it should be understood that, the vehicle mentioned below comprises a Bluetooth communication module for connecting to the terminal via Bluetooth.
FIG. 1 shows a block diagram of an exemplary operation environment for an embodiment. The operation environment may include an in-vehicle computer system; and one example of such system is an in-vehicle head unit 20. For ease of discussion, it is used herein as an example. The operation environment may further comprise: a communication link 40 between the in-vehicle head unit and a mobile device 50, for communication between the in-vehicle head unit 20 and the mobile device 50; a wireless communication link 72, which is present between the mobile device 50 of the user and the network 70; and a wireless communication I ink 71 , which is present between the in-vehicle head unit 20 and the network 70. Further, the calling object 60 accesses the communication network 70 via the communication link 73. The communication link described herein may connect these devices directly or indirectly. The network 70 may be a wireless communication network, such as a cellular network (including multiple base stations, and controllers), a core network (generally including multiple switching entities and gateways), and one or more other networks, such as but not limited to Internet, Public Switched Telephone Network (PSTN), Packet Switched Network, Frame Relay Network, Optical Network and/or other types of networks.
The in-vehicle head unit 20 and the mobile device 50 that has enabled Bluetooth may communicate with each other via a communication link 40 (e.g., a Bluetooth link). In one embodiment, the in-vehicle head unit 20 may comprise: a receiving module 21 , for receiving a request from a mobile device of a user to connect to a hands-free device; a determining module 22, for determining whether the mobile device has accessed an effective call with a calling object; a transferring module 23, for, if it is determined that the mobile device has accessed the effective call with the calling object, transferring an audio signal of the call from the mobile device to the hands-free device; and a prompting module 24, for sending a prompt message to the calling object to prompt that the call will be performed by the hands-free device.
The vehicle head unit 20 may be part of a multimedia system of the vehicle, which includes a memory/storage area, a processor, and a communication unit. The in-vehicle head unit 20 may also include peripheral devices such as a display, a control button, a hands-free calling device 30, and the like.
The user may establish a communication connection between the mobile device 50 and the vehicle head unit 20 by enabling Bluetooth. The mobile device 50 has an operation system, and may include various applications integrated in the operation system or stored in the memory/storage area and executed by the processor. Examples of the mobile device 50 include, for example, a cellular telephone, a personal digital assistant (PDA), a smart phone, a pocket personal computer (PC), a notebook computer, a tablet computer, a smart watch, or other devices that have a processor, communication capabilities and are easy to carry. In a common form, an application of a mobile device may be part of a larger series of vehicle features and interactions. In an embodiment, the mobile device 50 includes a communication unit, a memory unit device, and a processor.
The embodiment provides a management tool for the connection between the mobile device 50 and the in-vehicle head unit 20. In one embodiment, the communication management tool is implemented as a software that may be installed in the mobile device 50 and the in-vehicle head unit 20. The software is able to establish new connections or open existing connections, and to direct communication through any application communication, so as to provide a high quality experience for the user. For example, a communication manager is installed in the mobile device 50, and a hands-free manager (HFM) may be installed in the in-vehicle head unit 20 and may be configured to manage the connection 40. The communication manager and HFM may initiate the connection and manage the transfer of media over a Bluetooth communication channel 40.
The hands-free manager preferably provides support for hands-free processing. In one embodiment, the hands-free manager implements a Bluetooth protocol stack for connecting to a Bluetooth compatible hands-free device, such as a Bluetooth headset and Bluetooth onboard kits. In a particular embodiment, the hands-free manager implements a Bluetooth headset configuration profile and/or a Bluetooth hands-free configuration profile. The hands-free manager enables the hands-free unit to act as an audible relay for IP video calls and for audio-only cellular calls over the network, and perform other hands-free services. For example, for an IP video call, the audio portion of the call may be sent through the hands-free unit instead of the speaker of the mobile device 50, while the video portion of the call is still displayed by the mobile device 50 (or by the attached display). The hands-free unit may also include a microphone to capture audio information, which is then sent to the mobile device 50. Thus, the user may use the hands-free unit of the in-vehicle head unit 20 to speak and/or listen to the audio during the IP video call and/or the audio-only cellular call.
In an existing technique for managing Bluetooth connection between a vehicle and a mobile device, if the user conducts a telephone conversation with the mobile device 50 within the vehicle, in general, at least the audio signal associated with the call may be automatically transferred to the hands-free device 30 after connection is established between the mobile device 50 and the in-vehicle head unit 20 regardless of the user’s intention.
According to the present invention, the device for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device in a vehicle multimedia system comprises the following modules:
- a receiving module 21 , for receiving a request from a mobile device of a user to connect to a hands-free device;
- a determining module 22, for determining whether the mobile device has accessed an effective call with a calling object;
- a transferring module 23, for, if it is determined that the mobile device has accessed the effective call with the calling object, transferring an audio signal of the call from the mobile device to the hands-free device; and
- a prompting module 24, for sending a prompt message to the calling object to prompt the calling object that the call will be performed by the hands-free device.
The hands-free device communicates with the mobile device via a Bluetooth communication channel. The prompt message sent to the calling object is a voice prompt message.
The prompting module 24 is further used for: determining if there are other passengers than the user within the vehicle. If there are other passengers than the user within the vehicle, the prompting module 24 sends a prompt message to the calling object to prompt that the call will be performed by the hands-free device. The means for transferring an audio signal further includes a second prompting module, for sending a second prompt message to the user to prompt that the call will be performed by the hands-free device. The second prompt information may be text information, and the text may be displayed to the user through a display of the onboard multimedia system. The second prompt information may also be speech information, and the speech may be played to the user through the speaker of the onboard multimedia system.
In the present invention, each of the aforementioned modules may be or may include any type of computing means, a calculation circuit or any type of processor or a processing circuit capable of executing a series of instructions stored in the memory. Each of the modules may include a plurality of processors and/or a multi-core central processing unit (CPU) and may comprise any type of processor, such as a microprocessor, a digital signal processor, a microcontroller, and the like. Each of the modules may further include a memory to store data and/or program codes to execute a series of instructions. Alternatively, each of the modules may be or may include a separate controller, and may also be part of a central controller of the vehicle.
FIG. 2 is a flow chart of the operational steps of a module for transferring an audio signal of FIG. 1 in accordance with an illustrative embodiment of the present invention. Prior to depiction of FIG. 2, it should be noted that the flow chart shown here is depicted by way of example with reference to the assemblies shown in FIG. 1 , but these operational steps may be performed in any system, and not limited to the aforementioned scenarios shown in the drawings. In addition, the flow chart in FIG. 2 shows an example in which the operational steps are performed in a particular sequence, as indicated by the lines connecting the blocks, but the various steps shown in the drawing may be performed in any sequence or in any combination or sub-combination. It should be understood that in some embodiments, some of the following steps may be combined into a single step. In some embodiments, one or more additional steps may be included. In accordance with an embodiment of the present invention, the in-vehicle head unit 20 may include a Bluetooth interface. In the step 101 , the in-vehicle head unit 20 receives a request from a mobile device 50 of a user to connect to a hands-free device. In the step 102, the in-vehicle head unit 20 determines whether the mobile device has accessed an effective call with a calling object. The term“phone call” as used herein is generally synonymous with“voice call”, unless otherwise indicated. The term “effective call” as used herein may mean an effective condition of bidirectional communication, to establish bidirectional communication, or to be performing bidirectional communication. For example, the user of the mobile device 50 may make a phone call to the calling object 60 in an attempt to establish bidirectional communication. Alternatively, the user of the mobile device 50 receives a call made by the calling object 60. The call usually refers to voice communication, and may also include communication other than voice, such as video calls, text messages, chats, video chats, and the like.
In the step 103, if it is determined that the mobile device 50 of the user has accessed the effective call with the calling object 60, the in-vehicle head unit 20 transfers an audio signal of the call from the mobile device 50 to the hands-free device 30.
In the step 104, the in-vehicle head unit 20 sends a prompt message to the calling object to prompt that the call will be performed by the hands-free device. When the call is automatically adapted to the hands-free device of the onboard communication system after the phone is answered, the in-vehicle head unit 20 sends a prompt message to the calling object 60 to prompt that the call will be performed by the hands-free device. For example, when the call starts and the audio signal of the call is transferred from the mobile device 50 to the hands-free device 30, the in-vehicle head unit 20 sends a voice prompt to the calling object 60 in the audio signal of the call, for example,“The counterpart is talking with an onboard hands-free device, and you are kindly reminded to keep clear of secret information”. In this way, the calling object may know that the user is talking through the hands-free device of the onboard communication system at this moment, thereby avoiding revealing secret information to other passengers within the vehicle during the call.
The in-vehicle head unit 20 may send the voice prompt to the calling object 60 via the Bluetooth connection 40 and the voice call link between the mobile device 50 and the calling object 60. The voice prompt may also be sent to the calling object 60 by the connection 71 between the in-vehicle head unit 20 and the network 70 and the connection 73 between the network 70 and the calling object 60.
The voice prompt message may be generated by a Text to Speech (TTS).
Further, the in-vehicle head unit 20 may determine if there are other passengers than the user of the mobile device 50 within the vehicle through the onboard internal monitoring camera (or other organism identifying means). If there are other passengers than the user within the vehicle, it is indicated that there is a danger of revealing secrets to other people. Only at this time, a prompt message is sent to the calling object 60 to prompt that the call is being performed by the hands-free device.
The method of the present invention, after the step“transferring an audio signal of a call from the mobile device to the hands-free device”, further comprises sending a second prompt message to the user to prompt that the call will be performed by the hands-free device. The second prompt information may be text information, and the text may be displayed to the user through a display of the onboard multimedia system. The second prompt information may also be speech information, and the speech may be played to the user through the loudspeaker of the onboard multimedia system.
The embodiment of the present invention also provides a vehicle multimedia system comprising the aforementioned in-vehicle head unit 20 and a vehicle comprising the vehicle multimedia system.
Further, the present invention also provides a computer readable storage medium having executable instructions which, when executed, prompt a computer to perform the method according to the present invention.
The present invention, which is not limited thereto, may also relate to a computer program product that, when loaded and executed on a computer, causes the method according to the present invention.
The features disclosed in the present application which may implemented individually and in any combined manner, are of vital importance for implementation of the embodiments in different aspects of the design solution.
Although some aspects are depicted in association with the device, it should be understood that: these aspects also pertains to descriptions of the corresponding method, such that one module or one member of the device may also be understood as one step of the corresponding method or one feature of the step of the method. Similar thereto, aspects depicted in association with one step of the method or as one step of the method also pertain to descriptions of corresponding modules, details or features of the corresponding device.
In the present invention, the memory may include, but is not limited to, a disk drive, an optical storage device, a solid state memory, a floppy disk, a soft floppy disk, a hard disk, a magnetic tape or any other magnetic medium, an optical disk or any other optical medium, ROM (Read Only Memory), RAM ( Random Access Memory), a cache memory and/or any other memory chip or cartridge and/or any other medium from which the computer may read data, instructions and/or codes. The processor may include a central processing unit (CPU), a graphics processing unit (GPU), an application-specific integrated circuit (ASIC), an integrated circuit (IC), a system on chip (SOC), a programmable logic element or a field programmable gate array (FPGA) with a microprocessor.
Thus, the computer readable storage medium may be machine readable or computer readable. Accordingly, in some embodiments, the computer readable storage medium includes a data carrier having executable instructions that are capable of so cooperating with a programmable computer system or a programmable hardware assembly, such as to implement one of the methods described here. Thus, a embodiment is a data carrier, a digital storage medium or a computer readable storage medium, on which there is recorded a program for implementing one of the methods described herein. The embodiments of the present invention may generally be implemented as a program, a firmware, a computer program, or computer program product with program codes, or as data, wherein the program codes or data effectively implements the aforementioned method when the program runs on a processor or a programmable hardware assembly. The program codes or data may, for example, also be stored on a machine readable carrier or a data carrier. Program codes or data may additionally be present as source codes, machine codes or byte -codes, and as other intermediate codes.
Moreover, another embodiment is a data stream, a signal order, or a signal sequence, which is a program for implementing one of the methods described herein. The data stream, signal order or signal sequence may, for example, be configured for transmission via a data communication connection, such as via Internet or other networks. Thus, the embodiment may also be a signal sequence representing data, which is adapted to be sent via a network or data communication connection, wherein the data is a program.
To sum up, the technical solution of the present invention has at least the following advantageous effects:
In the case where the user within the vehicle receives a call from a contact (or make a call to a contact), when the call is answered, the call is automatically transferred to the hands-free device of the onboard communication system. According to the present invention, the vehicle multimedia system sends a prompt message to the calling object to prompt the counterpart that the call will be performed by the onboard hands-free device. For example, at the beginning of the call, the contact may hear a voice prompt“The counterpart is talking with an onboard hands-free device, and you are kindly reminded to keep clear of secret information” during the call. In this way, the contact may know that it is not a private calling environment at this moment, while the user is talking through the hands-free device of the onboard communication system (it is possible that there are other passengers within the vehicle). Thus, it avoids revealing secret information to other passengers within the vehicle during the call. In the entire process, there is no need to distract the user’s attention to the operation interface of the onboard communication system, by inputting instructions, let alone by manual operation. It brings great convenience to the user and also improves the safety of the travel.

Claims

CLAIMS:
1 . A method for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device in a vehicle multimedia system, the method comprising the following steps:
- receiving (101 ) a request from a mobile device (50) of a user to connect to a hands-free device (30);
- determining (102) whether the mobile device (50) has accessed an effective call with a calling object (60);
- if it is determined that the mobile device (50) has accessed the effective call with the calling object (60), transferring (103) an audio signal of the call from the mobile device (50) to the hands-free device (30); and
- sending (104) a prompt message to the calling object (60) to prompt the calling object (60) that the call will be performed by the hands-free device (30).
2. The method according to claim 1 , characterized in that, the hands-free device communicates with the mobile device over a Bluetooth commun ication channel.
3. The method according to claim 1 , characterized in that, the prompt message sent to the calling object is a voice prompt message.
4. The method according to claim 3, characterized in that, the voice prompt message can be generated by a Text to Speech.
5. The method according to one of claims 1 to 4, characterized in that, the method, after the step“transferring an audio signal of a call from the mobile device to the hands-free device”, further comprises sending a prompt message to the user to prompt that the call will be performed by the hands-free device.
6. The method according to one of claims 1 to 4, characterized in that, the step
“sending (104) a prompt message to the calling object (60) to prompt the calling object (60) that the call will be performed by the hands-free device (30)” further comprises:
- determining if there are other passengers than the user within the vehicle;
- if there are other passengers than the user within the vehicle, sending a prompt message to the calling object to prompt that the call will be performed by the hands-free device.
7. A device for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device in a vehicle multimedia system, the device comprising the following modules:
- a receiving module (21 ), for receiving a request from a mobile device of a user to connect to a hands-free device;
- a determining module (22), for determining whether the mobile device has accessed an effective call with a calling object;
- a transferring module (23), for, if it is determined that the mobile device has accessed the effective call with the calling object, transferring an audio signal of the call from the mobile device to the hands-free device; and
- a prompting module (24), for sending a prompt message to the calling object to prompt the calling object that the call will be performed by the hands-free device.
8. The device according to claim 7, characterized in that, the hands-free device communicates with the mobile device over a Bluetooth communication channel.
9. The device according to claim 7, characterized in that, the prompt message sent to the calling object is a voice prompt message.
10. The device according to claim 9, characterized in that, the voice prompt message can be generated by a Text to Speech.
11 . The device according to one of claims 7 to 10, characterized in that, the device further comprises a second prompting module, for sending a prompt message to the user to prompt that the call will be performed by the hands-free device.
12. The device according to one of claims 7 to 10, characterized in that, the prompting module (24) is further used for:
- determining if there are other passengers than the user within the vehicle;
- if there are other passengers than the user within the vehicle, sending a prompt message to the calling object to prompt that the call will be performed by the hands-free device.
13. A vehicle multimedia system, characterized in that, the vehicle multimedia system comprises:
a memory in which computer-executable instructions are stored;
a processor which is configured to execute the computer-executable instructions;
the device for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device in a vehicle multimedia system according to any one of claims 7 to 12;
wherein the computer-executable instructions when executed by the processor, make the device for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device perform the steps of the method according to one of claims 1 to 6.
14. A vehicle, characterized in that, the vehicle comprises the vehicle multimedia system according to claim 13.
15. A computer readable storage medium, having executable instructions which, when executed, prompt a computer to perform the method according to one of claims 1 to 6.
PCT/EP2019/052730 2018-03-09 2019-02-05 Method, device and system for controlling transfer of an audio signal from a mobile communication device to an on-board hands-free device in a vehicle multimedia system WO2019170336A1 (en)

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