KR20190061581A - System and method of controlling audio for vehicle based bluetooth communication - Google Patents

Abstract

The present invention relates to a Bluetooth-based vehicle audio system capable of automatically controlling a vehicle audio system through a user terminal based on Bluetooth and controlling the sharing of audio in a vehicle via various methods, and a control method thereof. The system includes: a user terminal selecting a device to output an audio device selection signal for selecting a random audio device among a plurality of audio devices of a vehicle in accordance with vehicle information transmitted from the vehicle through Bluetooth pairing with the vehicle, a function control signal for controlling the selected audio device, and an audio signal to be played in the selected audio device; and a vehicle entertainment system providing the vehicle information to the user terminal through Bluetooth pairing with the user terminal, controlling the function and operation of the corresponding audio device in accordance with the function control signal for the selected audio device and the audio device selection signal provided from the user terminal, and outputting the audio signal reproduced from the operated audio device to the output device selected by the user terminal.

Description

Technical Field [0001] The present invention relates to a Bluetooth-based vehicle audio system and a control method thereof,

The present invention relates to a Bluetooth-based vehicle audio system and a control method thereof. More particularly, the present invention relates to a Bluetooth-based vehicle audio system and a control method thereof, And more particularly, to a vehicle audio system and a control method thereof.

In general, most recently released vehicles are equipped with Bluetooth modules.

A Bluetooth module installed in the vehicle and a user terminal (e.g., a smart phone) equipped with a Bluetooth module are paired with each other so that audio (music and the like) signals reproduced by the user through the smart phone can be reproduced through the vehicle speaker Consists of.

However, in this method, since the audio signal is reproduced through the vehicle speaker, all the users aboard the vehicle listen to the audio signal reproduced. For example, in order to listen to music alone and not to disturb a passenger in the vicinity, there is an inconvenience that the user can only listen to music reproduced only by himself / herself, by connecting the handsfree to a handsfree connection link for a vehicle.

In addition, the conventional function of the Bluetooth-based integrated system is composed of a simple system for listening to music by hands-free connection of an external smartphone or checking the ECU and other control information of a vehicle on a BT phone (or a smartphone) . That is, only the function of confirming the information of the vehicle on the smartphone, or sending the music or audio signal via Bluetooth and reproducing it only through the speaker of the vehicle is possible.

That is, the technology used in a conventional vehicle entertainment system mixes or selects audio signals received from a smartphone connected via Bluetooth, a radio receiver inside a vehicle, a USB device, a CD player, a navigation device, and an audio player connected with an Aux line, And there is no way to reproduce the signal from another device.

Meanwhile, conventionally, the control of the audio system for the vehicle is controlled only through the UI of the vehicle entertainment system in the vehicle, so that it is inconvenient for the passenger of the rear seat of the vehicle to control the audio system.

Accordingly, the present invention has been made to solve the above problems, and it is an object of the present invention to provide an audio system of a vehicle entertainment system, which can remotely control an audio system of a vehicle entertainment system using a Bluetooth based user terminal (smart phone) The present invention provides a Bluetooth-based vehicle audio system and a control method thereof, which can selectively output and reproduce data via a smartphone or an input interface device through a vehicle speaker or an external Bluetooth speaker.

According to an aspect of the present invention, there is provided an audio system for a Bluetooth-based vehicle, the audio system comprising: A user terminal for selecting a device for outputting a function control signal for controlling the audio device and an audio signal to be reproduced from the selected audio device; And providing vehicle information to the user terminal through Bluetooth pairing with the user terminal, controlling the operation and function of the audio device according to an audio device selection signal provided from the user terminal and a function control signal of the selected arbitrary audio device And an automobile entertainment system for outputting an audio signal reproduced from the driven audio device to an output device selected by the user terminal.

The output device may be a vehicle speaker or a separate external Bluetooth speaker.

Wherein the vehicle entertainment system performs Bluetooth pairing with an external Bluetooth speaker when the audio signal output device selected by the user terminal is a separate external Bluetooth speaker and then transmits an audio signal reproduced from the audio device selected by the user to the paired Bluetooth And outputs it through a speaker.

Wherein the audio signal comprises at least one of a digital radio, an analog radio, an audio CD driver, and an external audio input device, And a control signal.

The user terminal selects and controls a car audio device through an application installed for remote control of the car audio, and selects an audio output device.

According to another aspect of the present invention, there is provided a method for controlling a Bluetooth-based vehicle audio system, the method comprising: executing an application for remote control of a vehicle audio system through a user terminal; When the application is executed, performing a Bluetooth pairing with a vehicle entertainment system; When the Bluetooth pairing is performed, the vehicle entertainment system transmits the vehicle information to the user terminal through the Bluetooth communication; The user terminal selects an arbitrary audio device for audio reproduction among the audio devices of the vehicle according to the vehicle information transmitted from the vehicle entertainment system, and generates a control signal for controlling a certain function of the selected audio device, Selecting an output device for outputting an audio signal to be reproduced and transmitting the selection signal to the vehicle entertainment system through Bluetooth communication; And the vehicle entertainment system drives and controls the corresponding audio device in accordance with the audio selection signal and the function control signal transmitted from the user terminal and outputs the audio output signal reproduced from the audio device controlled by the driving device to the corresponding output device And a step of outputting the output signal.

The output device may be a vehicle speaker or a separate external Bluetooth speaker.

The step of outputting to the corresponding output device may include: performing Bluetooth pairing through the external Bluetooth speaker and the Bluetooth module when the output device selected through the user terminal is a separate external Bluetooth speaker; Driving and controlling the audio device according to an audio selection signal and a function control signal transmitted from the user terminal; And outputting an audio output signal reproduced from the corresponding driven audio device to the external Bluetooth speaker paired with the Bluetooth.

According to the present invention, it is possible to remotely control an audio system of a vehicle entertainment system using a user terminal (smart phone) based on Bluetooth, or to control the audio system of a car speaker or an external device through a smart phone or an input interface device It is possible to selectively output and reproduce data through a separate Bluetooth speaker, thereby improving the efficiency of audio output reproduction and enabling audio to be independently heard without damaging other passengers in the vehicle.

In addition, when two or more wireless speakers are connected, it is possible to receive different audio services.

1 is a block diagram of a Bluetooth-based vehicle audio system according to the present invention;
BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a Bluetooth-

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. And the present invention is defined by the description of the claims. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It is noted that " comprises, " or " comprising, " as used herein, means the presence or absence of one or more other components, steps, operations, and / Do not exclude the addition.

Hereinafter, a Bluetooth-based vehicle audio system and a control method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a Bluetooth-based vehicle audio system according to the present invention.

1, the Bluetooth-based vehicle audio system according to the present invention may include a user terminal 100, a vehicle entertainment system 200, and an external Bluetooth speaker 300 separately.

The user terminal 100 is equipped with a Bluetooth module for enabling Bluetooth communication with the vehicle entertainment system 200 and an application for remote control of the vehicle entertainment system 200 is installed. Here, the user terminal 100 may be a smart phone, and any terminal equipped with a Bluetooth module and capable of executing the application may be used.

The user terminal 100 executes an application for remotely controlling the vehicle entertainment system 200. When the application is executed, the user terminal 100 performs pairing for the Bluetooth communication with the vehicle entertainment system 200 using the Bluetooth module .

When the pairing for the Bluetooth communication is performed with the entertainment system 200 for the vehicle, the controller 200 receives and displays control information for controlling the audio system from the entertainment system 200 for the vehicle. Here, the control information includes information on the type of the audio system, volume control information of each audio system, information for selecting the audio reproduction speaker of the audio system, frequency selection information for digital and analog radio of the audio system .

Meanwhile, in the application of the user terminal 100, audio system information according to the type of each manufactured vehicle is stored, and when the vehicle information of the Bluetooth communication is received from the vehicle entertainment system 200, According to the information, a UI for controlling the audio system of the vehicle can be displayed on the screen so that the user can control the audio system.

The vehicle entertainment system 200 may include a Bluetooth module 210, a control module 220, an audio system 230, a user interface module 240, and a vehicle speaker 250.

The Bluetooth module 210 receives the Bluetooth communication with the user terminal 100 and the external Bluetooth speaker 300, respectively.

The audio system 230 may also include a digital radio system 231, an analog radio system 232, an external audio input device 233 via an MP3 / USB or the like, and a CD player (not shown).

The vehicle speaker 250 is an in-vehicle speaker and outputs and reproduces audio under the control of the control module 220.

The user interface module 240 provides a UI for controlling the audio system 230 according to a user's selection, and may be a touch panel including a display.

When the application for remote control of the vehicle audio system in the user terminal 100 is executed and the Bluetooth module 210 is paired with the Bluetooth module 210, the control module 220 transmits information about the own vehicle, 210 to the user terminal 100.

When a selection signal for a desired one of the audio systems 230 is received from the user terminal 100 through the Bluetooth module 210, the corresponding audio device is driven according to the received selection signal.

At the same time, the audio signal reproduced from the driven audio device is also received with a selection signal as to which speaker to reproduce, and controls the connection with the speaker according to the received selection signal. For example, when the vehicle speaker 250 is selected by the user, the audio signal output from the driven audio device is output through the vehicle speaker 250.

However, if the user selects a separate external Bluetooth speaker 300 as the audio playback speaker, the control module 220 controls the external Bluetooth speaker 300 through the Bluetooth module 210 so that the external Bluetooth speaker 300 can be paired.

And controls the audio signal reproduced from the driven audio device to be reproduced through the paired external Bluetooth speaker 300 when the pairing with the external Bluetooth speaker 300 is performed through the Bluetooth module 210. [

Here, the external Bluetooth speaker 300 may be a Bluetooth earphone or a Bluetooth headset. That is, a Bluetooth earphone or a Bluetooth headset may be used as described above in order to listen to audio alone in the vehicle so as not to disturb the neighboring passengers.

Meanwhile, when the control module 220 selects an audio device, for example, a digital radio or an analog radio system to be operated through the audio system remote control application of the user terminal 100, the control module 220 selects a desired channel frequency of the radio will be.

When the user selects a desired channel frequency of the digital or analog radio through the corresponding application of the user terminal 100 as described above, the control module 220 receives the selection signal through the Bluetooth module 210, The frequency of the radio is adjusted according to the channel selection signal (frequency selection signal). Here, since the frequency adjustment method of the radio system is a known technique, a detailed description of the operation will be omitted.

Meanwhile, the control module 220 may control the audio device to correspond to the user's selection control through the application of the user terminal 100 as described above. However, the control module 220 may control the UI for controlling the audio system 230 in the vehicle entertainment system 200 may be controlled in the same manner even when the user selects the user interface through the UI displayed on the display device of the user interface module 240.

In this way, even when the user selects the audio device through the user interface module 240 of the vehicle entertainment system 200 and selects the external Bluetooth speaker 300 as the speaker for audio output reproduction of the audio device, The module 220 may perform pairing with an external Bluetooth speaker 300 via the Bluetooth module 210 as described above and then control the reproduced audio to be reproduced through the external Bluetooth speaker 300 .

Hereinafter, the operation of the Bluetooth-based vehicle audio system according to the present invention will be described.

First, when a user who has boarded the vehicle executes an automobile audio remote control application installed in the user terminal 100, the Bluetooth module (not shown) installed in the user terminal 100 is used to transmit the Bluetooth module Lt; RTI ID = 0.0 > 210 < / RTI >

The Bluetooth module 210 of the vehicle entertainment system 200 provides the pairing result to the control module 220 and the control module 220 transmits the preset vehicle information in accordance with the pairing with the user terminal 100 To the user terminal 100 that is paired via the Bluetooth module 210.

The user terminal 100 receives and displays audio system control information of a corresponding vehicle from a server (not shown) through a network using corresponding vehicle information received from the vehicle entertainment system 200. Here, the audio system control information includes information such as type information of the audio system 230 mounted on the vehicle, control information for each type of the audio system 230, and information for selecting an audio reproduction output device, .

Accordingly, the user selects the audio system 230 to be controlled according to the screen displayed on the user terminal 100. Here, the audio system 230 may be a digital radio, an analog radio, an external audio input device such as MP3 and USB, a CD / DVD player, or the like.

When an arbitrary audio system 230 is selected by the user, the audio system 230 selects an audio signal output device of the audio system 230. That is, the user selects whether the audio signal reproduced through the selected audio system 230 is reproduced through the vehicle speaker 250 or through the Bluetooth speaker 300 connected separately from the outside. Although not described above, various control signals for controlling various functions of the selected arbitrary audio system 230 can be selected at the same time as the selection of the arbitrary audio system 230, A channel (frequency) selection control signal, a volume control signal, and the like. In case of an audio CD player, a desired audio reproduction track or the like can be selected. A specific method for controlling these various functions is generally well known in the art and can be sufficiently inferred from the above description and various functions other than the control signal can also be selected as a control signal in the same manner And detailed description thereof will be omitted.

When an arbitrary audio system 230 is selected by a user and an output device of an audio signal is selected, the selection signal is transmitted to the Bluetooth module 210 of the vehicle entertainment system 200 paired via the Bluetooth communication from the user terminal 100 ).

The Bluetooth module 210 of the vehicle entertainment system 200 receives the audio system 230 selection signal transmitted through the Bluetooth communication from the user terminal 100, the function control signal of the selected audio system 230, To the control module (220).

When the audio reproduction output device selection signal received through the Bluetooth module 210 is the vehicle speaker 250, the control module 220 controls the driving of the audio according to the audio selection signal, And then controls the audio signal reproduced from the audio system through the speaker 250 for the vehicle.

The control module 220 of the vehicle entertainment system 200 controls the Bluetooth module 210 so that the external Bluetooth speaker 300 is connected to the external Bluetooth speaker 300, ≪ / RTI >

When the pairing of the Bluetooth module 210 of the vehicle entertainment system 200 and the external Bluetooth speaker 300 is performed, the control module 220 controls the operation of the audio device among the audio system 230 selected by the user, And controls the selection function for the audio device.

After the audio driving and control of the corresponding functions are performed, the control module 220 transmits the audio output signal reproduced from the audio device to an external separate Bluetooth speaker 300 paired via the Bluetooth module 210, .

Although it has been described above that the audio system of the vehicle entertainment system 200 can be selected and controlled through the user terminal 100, it is obvious that the audio system can be performed through the touch of the screen displayed on the user interface module 240 , The user interface module 240 may select an external Bluetooth speaker 300 and output an audio signal reproduced from the selected audio device through the Bluetooth module 210 through the Bluetooth speaker 300, It is.

A method for controlling a Bluetooth-based vehicle audio system according to the present invention, which corresponds to the operation of the Bluetooth-based vehicle audio system according to the present invention as described above, will be described step by step with reference to FIG.

2 is a flowchart illustrating a method of controlling a Bluetooth-based vehicle audio system according to the present invention.

As shown in FIG. 2, a user who is aboard the vehicle executes an audio remote control application for a vehicle installed in the user terminal (S201).

Next, the user terminal is paired with a Bluetooth module of a vehicle entertainment system built in a car audio system (S202).

When Bluetooth pairing is performed between the user terminal and the vehicle entertainment system, the vehicle entertainment system transmits the preset vehicle information to the user terminal paired via the Bluetooth module (S203).

The user terminal receives and displays audio system control information of the vehicle from a server (not shown) through the network using the corresponding vehicle information transmitted from the vehicle entertainment system. Here, the audio system control information may be information on the type of the audio system installed in the vehicle, control information for each type of the audio system, and information for selecting an audio reproduction output device, depending on the type of the vehicle. Accordingly, the user selects a corresponding audio system to be driven according to the screen displayed on the user terminal, a desired function of the audio system, and a speaker for outputting an audio signal reproduced when the audio system is driven (S204). Here, the audio system may be a digital radio, an analog radio, an external audio input device such as MP3 and USB, a CD / DVD player, and the speaker for outputting the audio signal may be a vehicle speaker or an external separate Bluetooth speaker . In addition, the function control signal may be a channel (frequency) selection control signal in the case of radio, a volume control signal, or the like, and may be a desired audio reproduction track in the case of an audio CD player. It is obvious that a specific method for controlling these various functions can be generally deduced from the above description, and other functions can be selectively controlled by the same method.

Then, it is determined whether the audio reproduction output device selected by the user is a vehicle speaker or an external Bluetooth speaker (S205).

Thus, when an arbitrary audio system is selected by a user and an output device of an audio signal is selected, the selection signal is transmitted from the user terminal to the car entertainment system paired via Bluetooth communication.

Next, the vehicle entertainment system determines whether the selected audio reproduction output device is a vehicle speaker or an external Bluetooth speaker using the selection signal transmitted through the Bluetooth communication in the user terminal (S205).

As a result of the determination, if the audio reproduction output device selected by the user through the user terminal is a car speaker, the vehicle entertainment system controls driving of the audio device in accordance with the audio system selection signal of the user, Then, the audio signal reproduced from the audio system is outputted and reproduced through the vehicle speaker (S206).

However, if it is determined in step S205 that the audio reproduction output device selected by the user through the user terminal is a separate external Bluetooth speaker, the vehicle entertainment system controls the Bluetooth module to attempt to pair with an external Bluetooth speaker (S207).

When the pairing of the Bluetooth module of the car entertainment system and the external Bluetooth speaker is performed, the car entertainment system controls the driving of the audio device among the audio systems selected by the user and controls the selection function for the audio device.

After the audio driving and control of the corresponding functions are performed, the audio output signal reproduced from the audio device is transmitted to an external Bluetooth speaker paired with the Bluetooth module and is controlled to be reproduced (S208).

In the above-described control method, the audio system of the vehicle entertainment system can be selected and controlled through the user terminal. However, the control method can be performed through the touch of the screen displayed on the display unit of the user interface module of the vehicle entertainment system It is also apparent that an external Bluetooth speaker may be selected through the display screen of the user interface module and the audio signal reproduced from the selected audio device may be output through the Bluetooth module through the Bluetooth module.

Although the Bluetooth-based vehicle audio system and the control method thereof according to the present invention have been described with reference to the embodiments, the scope of the present invention is not limited to the specific embodiments, Various modifications, alterations, and alterations can be made within the scope of the present invention.

Therefore, the embodiments described in the present invention and the accompanying drawings are intended to illustrate rather than limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and accompanying drawings . The scope of protection of the present invention should be construed according to the claims, and all technical ideas within the scope of equivalents should be interpreted as being included in the scope of the present invention.

100: User terminal
200: Automotive entertainment system
210: Bluetooth module
220: Control module
230: Audio system
231: Digital radio
232: Analog radio
233: External audio input device
240: User interface module
250: Car speaker
300: Bluetooth speaker

Claims (8)

A function control signal for controlling the selected audio device among the plurality of audio devices of the vehicle, a function control signal for controlling the selected audio device, and an output of an audio signal reproduced from the selected audio device, in accordance with vehicle information transmitted from the vehicle through Bluetooth pairing with the vehicle A user terminal for selecting a device; And
And provides the vehicle information to the user terminal through Bluetooth pairing with the user terminal and controls the operation and function of the audio device according to the audio device selection signal provided from the user terminal and the function control signal of the selected arbitrary audio device And a vehicle entertainment system for outputting an audio signal reproduced from the audio device being driven to an output device selected by the user terminal.
The method according to claim 1,
Wherein the output device is a vehicle speaker or a separate external Bluetooth speaker.
3. The method of claim 2,
The vehicle entertainment system includes:
When the audio signal output device selected by the user terminal is a separate external Bluetooth speaker, performing an external Bluetooth speaker pairing and then outputting an audio signal reproduced from the audio device selected by the user through the paired Bluetooth speaker In-car audio system.
The method according to claim 1,
Wherein the audio signal comprises at least one of a digital radio, an analog radio, an audio CD driver, and an external audio input device, Wherein the control signal comprises a control signal.
The method according to claim 1,
Wherein the user terminal selects and controls a car audio device through an application installed for car audio remote control and selects an audio output device.
Executing an application for remote control of a vehicle audio system through a user terminal;
When the application is executed, performing a Bluetooth pairing with a vehicle entertainment system;
When the Bluetooth pairing is performed, the vehicle entertainment system transmits the vehicle information to the user terminal through the Bluetooth communication;
The user terminal selects an arbitrary audio device for audio reproduction among the audio devices of the vehicle according to the vehicle information transmitted from the vehicle entertainment system, and generates a control signal for controlling a certain function of the selected audio device, Selecting an output device for outputting an audio signal to be reproduced and transmitting the selection signal to the vehicle entertainment system through Bluetooth communication; And
The vehicle entertainment system drives and controls the audio device according to the audio selection signal and the function control signal transmitted from the user terminal and outputs the audio output signal reproduced from the audio device controlled by the user terminal to the corresponding output device selected through the user terminal And outputting the audio data to the Bluetooth-based vehicle audio system.
The method according to claim 6,
Wherein the output device is a car speaker or a separate external Bluetooth speaker.
8. The method of claim 7,
Wherein the outputting to the corresponding output device comprises:
If the output device selected through the user terminal is a separate external Bluetooth speaker, the vehicle entertainment system performs Bluetooth pairing through the external Bluetooth speaker and the Bluetooth module;
Driving and controlling the audio device according to an audio selection signal and a function control signal transmitted from the user terminal; And
And outputting an audio output signal reproduced from the corresponding driven audio device to the external Bluetooth speaker paired with the Bluetooth.

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