KR20130021998A - Vehicle multimedia apparatus for maintaining hands-free call mode using bluetooth in case of start of engine and method thereof - Google Patents

Vehicle multimedia apparatus for maintaining hands-free call mode using bluetooth in case of start of engine and method thereof Download PDF

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Publication number
KR20130021998A
KR20130021998A KR1020110084605A KR20110084605A KR20130021998A KR 20130021998 A KR20130021998 A KR 20130021998A KR 1020110084605 A KR1020110084605 A KR 1020110084605A KR 20110084605 A KR20110084605 A KR 20110084605A KR 20130021998 A KR20130021998 A KR 20130021998A
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KR
South Korea
Prior art keywords
vehicle
bluetooth
hands
free
power
Prior art date
Application number
KR1020110084605A
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Korean (ko)
Inventor
공종운
Original Assignee
현대모비스 주식회사
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Application filed by 현대모비스 주식회사 filed Critical 현대모비스 주식회사
Priority to KR1020110084605A priority Critical patent/KR20130021998A/en
Publication of KR20130021998A publication Critical patent/KR20130021998A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • 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

Abstract

PURPOSE: A vehicle multi-media device maintaining a Bluetooth hands-free call mode when starting a vehicle and a method thereof are provided to prevent the Bluetooth hands-free call mode from being converted into a phone call mode when starting the vehicle, thereby reducing user inconvenience caused by changes in a call mode when starting the vehicle. CONSTITUTION: A vehicle multi-media device(200) maintaining a Bluetooth hands-free call mode when starting a vehicle comprises a Bluetooth communication unit(210), a control unit(220), and a connector(230). The Bluetooth communication unit includes a power interface(212). The power interface interfaces power to a Bluetooth module according to power control signals of the control unit and continuously supplies power without stopping when starting the vehicle. The control unit outputs power control signals when starting the vehicle. The connector transmits ignition signals(IGN) generated when starting the vehicle to the control unit. [Reference numerals] (210) Bluetooth communication unit; (212) Power supply interface; (220) Control unit; (AA) Power supply(ACC on)

Description

Vehicle multimedia apparatus for maintaining hands-free call mode using bluetooth in case of start of engine and method

The present invention relates to a vehicle multimedia device, and more particularly, to a vehicle multimedia device supporting a hands-free call mode of a smartphone.

1 is a diagram illustrating an internal configuration of a vehicle multimedia apparatus supporting a conventional hands-free call mode.

Referring to FIG. 1, a vehicle multimedia apparatus 20 such as an AVN head unit supports a hands-free call mode in a vehicle. For example, by connecting a mobile phone equipped with the driver's own Bluetooth function with the vehicle multimedia device, it supports the hands-free call mode. To this end, the vehicle multimedia apparatus includes a short range communication unit 21 such as a Bluetooth module and a control unit 22 for controlling the communication unit. This device configuration allows the operator to speak easily in hands-free mode.

However, in the conventional hands-free call mode, when the vehicle is turned on while the driver is in the hands-free call mode, the Bluetooth module is turned off so that the call is switched to the phone call mode (secret call mode or normal call mode). have. In other words, when the driver gets in the vehicle and operates the vehicle in the Acc on state, the driver's mobile phone is automatically switched to the Bluetooth hands-free call mode. do. At this time, when the driver starts the vehicle maintaining the Acc on state, the power supplied to the Bluetooth module is momentarily cut off, thereby changing the phone call mode from the hands-free call mode. In addition, in the latest smartphone, when the Bluetooth module is rebooted and the hands-free call mode is started again, there is a problem that a confusing call mode is frequently changed, such as being switched from the phone call mode to the hands-free call mode.

Accordingly, an object of the present invention is to provide a vehicle multimedia device capable of maintaining a Bluetooth hands-free function when starting a vehicle.

Another object of the present invention is to provide a method for maintaining a Bluetooth hands-free function when starting a vehicle.

According to an aspect of the present invention, there is provided a vehicle multimedia apparatus according to an aspect of the present invention, which supports a hands-free call mode using a Bluetooth function. By maintaining the interface with the external power as it is, to prevent the supply of the external power generated when starting the vehicle, to maintain the activation of the Bluetooth function activated in the vehicle power-on (ACC on) mode even when starting the vehicle It includes a Bluetooth communication unit.

According to another aspect of the present invention, there is provided a method of maintaining a Bluetooth hands-free function when starting a vehicle, the method comprising: executing a Bluetooth application by controlling a Bluetooth module installed in the vehicle multimedia apparatus by a microcomputer provided in the vehicle multimedia apparatus; According to a Bluetooth application, the user's mobile phone and the Bluetooth module are connected to switch the mobile phone from the normal communication mode to the hands-free communication mode, and while maintaining the hands-free communication mode, the microcomputer determines whether to start the vehicle. And maintaining the hands-free communication mode even when the vehicle starts by controlling the power supply so that the microcomputer does not block the power supply to the Bluetooth module according to the determination result.

According to the present invention, it is possible to reduce the inconvenience of the user due to the change in the call mode according to the vehicle startup by preventing the change from the Bluetooth hands-free call mode to the phone call mode according to the start-up of the vehicle in the Bluetooth hands-free call mode.

1 is a diagram illustrating an internal configuration of a vehicle multimedia apparatus supporting a conventional hands-free call mode.
2 is a block diagram of an in-vehicle multimedia device supporting a Bluetooth function according to an embodiment of the present invention.
3 is a flowchart illustrating a method for maintaining a Bluetooth hands-free function when starting a vehicle according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The foregoing and further aspects of the present invention will become more apparent from the following detailed description of preferred embodiments with reference to the accompanying drawings. Hereinafter, the present invention will be described in detail to enable those skilled in the art to easily understand and reproduce the present invention.

2 is a block diagram of an in-vehicle multimedia device supporting a Bluetooth function according to an embodiment of the present invention.

Referring to FIG. 2, a vehicle multimedia apparatus 200 supporting a Bluetooth function according to an embodiment of the present invention may have a Bluetooth communication with a mobile phone 100 including a smartphone and all types of terminals capable of 3G mobile communication. Designed to be capable, it supports hands-free calling mode.

For hands-free call mode, the smartphone 100 includes a short range communication module for short range communication with the vehicle multimedia apparatus 200.

The short range communication module may be a Bluetooth module. In one embodiment, the mobile phone 100 activates the hands-free call mode or the normal call mode according to the call mode command message transmitted from the vehicle multimedia apparatus 200 through the near field communication.

The vehicle multimedia apparatus 200 refers to a multimedia apparatus embedded in a vehicle, and may be an AVN head unit. As shown, the vehicle multimedia apparatus 200 includes a Bluetooth communication unit 210 and a control unit 220, the connector 230 for transmitting the ignition signal (IGN) generated when the vehicle starts, to the control unit 220 It may further include. The vehicle multimedia apparatus 200 determines whether the vehicle is started based on whether an ignition signal is input.

Bluetooth communication unit 210 is preferably a short-range communication module. In one embodiment, the Bluetooth communication unit 210 may be a Bluetooth module, and may include a power interface 212 that interfaces with a power source to the Bluetooth module according to a power control signal from the controller 220. The power control signal from the controller 220 may include a power supply maintenance signal and a power supply cutoff signal. When the power supply maintenance signal is applied from the controller 220, the power interface 212 supplies power to internal components constituting the Bluetooth communication unit continuously (or forcibly) without stopping power supply even when the vehicle is started. Maintain state. When the power supply cutoff signal is applied from the controller 220, the power interface 212 cuts off the power supply, and when the power supply is cut off, the hands-free communication mode according to the Bluetooth connection is automatically released. In this case, the mobile phone is thus switched from the handsfree communication mode to the normal communication mode.

The controller 220 may be a main CPU or a microcomputer for overall control of the vehicle multimedia apparatus 200. In one embodiment, the control unit 220 executes a Bluetooth application (BT Application) to boot the vehicle multimedia device 200 to the Bluetooth mode. The vehicle multimedia apparatus 200 booted in the Bluetooth mode supports the hands-free call mode of the mobile phone 100 through the Bluetooth communication with the mobile phone 100.

Herein, communication between the controller 220 and the Bluetooth module 210 may be performed according to a universal asynchronous receiver / transmitter (UART) scheme. Hereinafter, an overall operating embodiment of the system including the smartphone 100 and the vehicle multimedia apparatus 200 will be described.

When the vehicle power-on (ACC on) is confirmed, the controller 220 executes a Bluetooth application to perform a process for searching for a Bluetooth device located in the vicinity of the vehicle multimedia device 200.

In one embodiment, the electronic control unit for controlling at least a portion of the vehicle electronically provides vehicle power on (ACcc) / power off (ACC off) information to the vehicle multimedia device 200 Accordingly, the controller 220 may check the power-on state of the vehicle. Here, the electronic control unit and the vehicle multimedia apparatus 200 are connected to a can (Controller Area Network, CAN) to communicate with each other, and the electronic control unit transmits vehicle start information to the vehicle multimedia apparatus 200 through CAN communication. Can be.

When the mobile phone 100 is searched by the Bluetooth device search, the controller 220 performs a process such that a Bluetooth communication channel is connected between the Bluetooth module 210 and the smartphone 100. In one embodiment, when the Bluetooth communication channel is connected between the Bluetooth communication unit 210 and the mobile phone 100, the controller 220 provides a command message for activating the hands-free call mode via the Bluetooth module 210 to the smartphone 100. ). Alternatively, the controller 220 may transmit a command message for activating the hands-free call mode to the mobile phone 100 through the Bluetooth module 210 when there is a user command through the user interface of the vehicle multimedia apparatus 200.

The mobile phone 100 receiving the hands-free call mode activation command message activates the hands-free call mode. In another embodiment, when the Bluetooth communication channel is connected between the Bluetooth module 210 and the mobile phone 100, the mobile phone 100 automatically activates the hands-free call mode.

If power off (ACC off) is confirmed after the vehicle is powered on, the controller 220 transmits a command message for activating the phone call mode to the mobile phone 100 through the Bluetooth module 210, and at the same time, Shut off the power supply to the Bluetooth module. By doing so, it is forced to switch from the handsfree communication mode to the normal communication mode.

On the other hand, in the present invention, by checking whether the vehicle is started and maintaining the power supply to the Bluetooth communication unit even when the start is confirmed, the hands-free communication mode is controlled so as not to switch to the normal communication mode when the vehicle is started. This will be described in detail with reference to FIG. 2 below.

3 is a flowchart illustrating a method for maintaining a Bluetooth hands-free function when starting a vehicle according to an embodiment of the present invention.

Referring to FIG. 3, when a driver operates a vehicle in an ACC on state after boarding a vehicle, the vehicle multimedia apparatus activates a Bluetooth communication function by receiving power according to the ACC on state of the vehicle to a Bluetooth communication unit provided therein. (S311).

Subsequently, the vehicle multimedia apparatus is connected to the user's mobile phone according to the activated Bluetooth communication function to support the hands-free communication mode (S313).

Subsequently, the user can make a phone call in the hands-free communication mode in the vehicle (S315). In this case, when the vehicle is started by the user in the hands-free communication mode (S317), the vehicle multimedia apparatus receives an ignition signal from the electronic control unit through the can communication line according to the vehicle starting. The controller of the vehicle multimedia apparatus transmits a power supply maintenance signal to the Bluetooth communication unit according to the input signal. Then, the power interface unit of the Bluetooth communication unit forcibly maintains interfacing with the power source even though the vehicle is started according to the power supply maintenance signal. That is, the power supplied to the Bluetooth module is maintained as it is (319). Therefore, even when the vehicle is started, the phone is not called in the normal phone communication mode in the hands-free communication mode, but the call can be continued in the hands-free communication mode (S321).

On the other hand, if the start is not taken in the step S317, it is determined whether the ACC off (S323).

If ACC off is confirmed, the Bluetooth communication unit is deactivated (S325), the hands-free call mode is switched to the phone call mode. That is, in the present invention, the hands-free call mode is switched to the normal call mode in the ACC off state, but the hands-free call mode is not switched to the normal call mode when the vehicle is started.

So far I looked at the center of the preferred embodiment for the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.

Claims (6)

In a vehicle multimedia device supporting a hands-free call mode using a Bluetooth function,
A controller for outputting a power control signal when the vehicle starts up; And
Interfacing with an external power source is maintained according to the power control signal, thereby preventing the supply of external power generated when the vehicle is started, thereby activating the Bluetooth function activated in the vehicle power-on mode. Bluetooth communication unit to maintain the same even when the vehicle starts;
Vehicle multimedia device that supports the hands-free call mode using a Bluetooth function comprising a.
The apparatus of claim 1,
Vehicle hands-free communication mode using a Bluetooth function, characterized in that for outputting the power control signal according to the ignition signal input when the vehicle starts.
The power supply control signal of claim 2, further comprising a power cutoff signal for blocking power supply to the Bluetooth communication unit.
The control unit,
Transmits the power cutoff signal to the Bluetooth communication unit according to the input ACC off signal,
And the Bluetooth communication unit deactivates the Bluetooth function according to the power cutoff signal so that the hands-free communication mode is switched to a phone communication mode.
The method of claim 2, further comprising a connector connected with the CAN communication line,
The control unit,
Vehicle handsets supporting the hands-free call mode using the Bluetooth function, characterized in that for receiving the ignition signal from the CAN communication line through the connector.
Powering the vehicle by a driver;
Executing a Bluetooth application by controlling a Bluetooth module installed in the vehicle multimedia apparatus by a microcomputer provided in the vehicle multimedia apparatus;
Connecting the mobile phone of the user and the Bluetooth module according to the executed Bluetooth application to switch the mobile phone from the normal communication mode to the hands-free communication mode;
Determining, by the microcomputer, whether to start the vehicle while maintaining the hands-free communication mode; And
Maintaining the hands-free communication mode even when the vehicle is started by controlling the power supply so that the power supply to the Bluetooth module is not blocked according to the determination result
Method for maintaining a Bluetooth hands-free function when starting the vehicle comprising a.
The Bluetooth hands-free function of claim 5, wherein the microcomputer determines whether to start the vehicle based on whether the microcomputer inputs an ignition signal. Way.


KR1020110084605A 2011-08-24 2011-08-24 Vehicle multimedia apparatus for maintaining hands-free call mode using bluetooth in case of start of engine and method thereof KR20130021998A (en)

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KR1020110084605A KR20130021998A (en) 2011-08-24 2011-08-24 Vehicle multimedia apparatus for maintaining hands-free call mode using bluetooth in case of start of engine and method thereof

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Application Number Priority Date Filing Date Title
KR1020110084605A KR20130021998A (en) 2011-08-24 2011-08-24 Vehicle multimedia apparatus for maintaining hands-free call mode using bluetooth in case of start of engine and method thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9444943B2 (en) 2013-12-09 2016-09-13 Hyundai Motor Company Multimedia apparatus, method, and computer readable medium for providing hands-free service for vehicle
US9451549B2 (en) 2014-05-09 2016-09-20 Hyundai Motor Company Method for controlling a bluetooth connection

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9444943B2 (en) 2013-12-09 2016-09-13 Hyundai Motor Company Multimedia apparatus, method, and computer readable medium for providing hands-free service for vehicle
US9451549B2 (en) 2014-05-09 2016-09-20 Hyundai Motor Company Method for controlling a bluetooth connection
US9480020B2 (en) 2014-05-09 2016-10-25 Hyundai Motor Company Method for controlling a bluetooth connection

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