KR20110073691A - Voice recording apparatus for car audio using mic input unit provided at bluetooth module for vehicle and control method thereof - Google Patents

Voice recording apparatus for car audio using mic input unit provided at bluetooth module for vehicle and control method thereof Download PDF

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Publication number
KR20110073691A
KR20110073691A KR1020090130402A KR20090130402A KR20110073691A KR 20110073691 A KR20110073691 A KR 20110073691A KR 1020090130402 A KR1020090130402 A KR 1020090130402A KR 20090130402 A KR20090130402 A KR 20090130402A KR 20110073691 A KR20110073691 A KR 20110073691A
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KR
South Korea
Prior art keywords
input unit
voice data
microphone
input
codec
Prior art date
Application number
KR1020090130402A
Other languages
Korean (ko)
Inventor
정내운
Original Assignee
현대모비스 주식회사
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Publication date
Application filed by 현대모비스 주식회사 filed Critical 현대모비스 주식회사
Priority to KR1020090130402A priority Critical patent/KR20110073691A/en
Publication of KR20110073691A publication Critical patent/KR20110073691A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • B60R11/0211—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for record carriers apparatus, e.g. video recorders, tape players or CD players
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • B60R11/0217—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for loud-speakers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • B60R11/0247—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for microphones or earphones
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10037—A/D conversion, D/A conversion, sampling, slicing and digital quantisation or adjusting parameters thereof
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/10537—Audio or video recording
    • G11B2020/10546—Audio or video recording specifically adapted for audio data
    • G11B2020/10555—Audio or video recording specifically adapted for audio data wherein the frequency, the amplitude, or other characteristics of the audio signal is taken into account
    • G11B2020/10574—Audio or video recording specifically adapted for audio data wherein the frequency, the amplitude, or other characteristics of the audio signal is taken into account volume or amplitude

Abstract

PURPOSE: A voice recording apparatus using an MIC input installed in a vehicle Bluetooth module and a control method thereof are provided to use the circuit of the MIC input unit in common. CONSTITUTION: A codec(21) converts the electric signal of the analog type of an MIC(Microphone) input unit(12) into digital voice data. In case the digital voice data is inputted, the codec restores the digital voice data to an analog signal. If the recording command of external sound is inputted from an input unit(14), a controller(31) stores the converted digital voice data in a memory(41). If the reproduction command of the stored voice data is inputted from the input unit, the controller outputs the stored digital voice data to the codec.

Description

VOICE RECORDING APPARATUS FOR CAR AUDIO USING MIC INPUT UNIT PROVIDED AT BLUETOOTH MODULE FOR VEHICLE AND CONTROL METHOD THEREOF}

The present invention relates to a voice recording apparatus using a microphone input unit provided in a Bluetooth module for a vehicle and a method of controlling the same. More specifically, the present invention relates to a car audio system using a microphone input unit provided in front of a vehicle Bluetooth module. The present invention relates to a voice recording apparatus capable of adding a voice recording function and a control method thereof.

Recent vehicle audio devices have a configuration in which not only audio devices in a vehicle but also multimedia devices such as DVDs and navigation devices are integrated, and audio services such as radio, compact disk (CD) playback, mp3 playback, and digital versatile disk (DVD). A video service such as playback and a navigation service such as a destination guidance function are provided through operation by a user.

In such an integrated audio device, there is an increasing need to implement various various additional functions, and one of such additional functions is a voice recording function for simply taking notes through a microphone.

The first consideration in implementing these add-ons is to design them to make the best use of the hardware resources in the audio device. That is, the additional function device should be designed with the simplest configuration without using redundant parts for additional functions.

The present invention is to solve the above technical problem, by using a circuit such as the microphone input unit provided in the vehicle Bluetooth module jointly, it is possible to implement a voice recording function with a simple configuration without adding components such as a microphone and a microphone input unit It is an object of the present invention to provide a voice recording apparatus and a control method thereof.

Voice recording apparatus using a microphone input unit provided in the vehicle Bluetooth module according to the present invention for achieving the above object, a microphone for converting the external sound into an electrical signal; A microphone input unit which performs predetermined signal processing on the electrical signal provided from the microphone; An input unit for inputting a recording or reproducing command of an external sound by a user's operation; A codec for converting an analog signal output from the microphone input unit into digital voice data and reconstructing the digital voice data into an analog signal when the digital voice data is input; A memory for storing digital voice data even when the power supply is cut off; And when the recording command for the external sound is input from the input unit, storing the digital voice data converted by the codec in the memory, and when the reproducing command for the external sound is input from the input unit, the digital voice data stored in the memory. It characterized in that it comprises a control unit for loading and outputting to the codec.

In addition, the control method of the voice recording apparatus according to the present invention, (a) determining whether a recording command for the external sound from the input unit by the user's operation; (b) if it is determined in step (a) that a recording command for external sound is input, storing digital voice data input through a microphone, a microphone input unit, and a codec in a memory; (c) determining whether a reproducing command for voice data stored from the input unit has been input by a user's operation; And (d) if it is determined in step (c) that a playback command for the stored voice data is input, loading the digital voice data stored in the memory and outputting the digital voice data to the codec.

According to the present invention, a voice recording device is implemented by using a microphone and a microphone input unit already provided in a vehicle Bluetooth module in combination with a Bluetooth module, thereby obtaining a number of parts and a cost reduction effect compared to a case of configuring a separate independent voice recording device. The voice memo and playback function by voice recording can be simply implemented as a convenient function of the vehicle.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various different forms, and the present embodiments are only intended to complete the disclosure of the present invention and to those skilled in the art. It is provided to inform you completely.

First, a configuration and operation of a voice recording apparatus using a microphone input unit included in a vehicle Bluetooth module according to an embodiment of the present invention will be described with reference to FIG. 1.

As shown in FIG. 1, a voice recording apparatus using a microphone input unit included in a vehicle Bluetooth module according to an embodiment of the present invention includes a microphone 11, a microphone input unit 12, a Bluetooth (BT) module 13, and an input unit. 14, the codec 21, the control unit 31, the memory 41, the electronic volume control unit 51, the amplifier 61, and four speakers 71, 72, 73, 74.

The vehicle Bluetooth module 13 has a transmitter and a receiver and communicates with another electronic device having a Bluetooth module. A microphone 11 and a microphone input unit 12 are built in front of the Bluetooth module 13.

The microphone 11 converts a sound such as a voice or a sound into an electrical signal and provides it to the microphone input unit 12, and the microphone input unit 12 performs signal processing such as filtering on the input electrical signal to perform Bluetooth processing. To the module 13.

The electrical signal for the external sound input through the Bluetooth module 13 may be transmitted to a Bluetooth device such as a mobile phone through a transmitter in the Bluetooth module 13. In addition, an electrical signal transmitted from a Bluetooth device such as a cellular phone is received by a receiver in the Bluetooth module 13. This electrical signal is, for example, the voice signal of the other party, which is received through the mobile phone. The electronic volume control unit 51 applies the volume control and the sound field effect to the electric signal, and then the electric signal is amplified by the amplifier 61 so that the vehicle speakers 71, 72, 73, and 74 Is output. Accordingly, the user of the cellular phone with the built-in Bluetooth module can hear the other party's voice through the speakers 71, 72, 73, and 74 in the vehicle through communication with the Bluetooth module in the vehicle.

The present invention has a technical feature of implementing a voice recording function by using the microphone 11 and the microphone input unit 12 provided in front of the Bluetooth module 13.

The input unit 14 is for inputting a recording / playback command, and is used for inputting a voice recording command or a stored voice playback command to execute the voice recording function. That is, the user may input the voice recording command by operating the input unit 14 or input the playback command for the voice stored in the memory 41. The electrical signal for the external sound input through the microphone 11 and the microphone input unit 12 is configured to be output to the codec 21.

The codec 22 is a unit incorporating a coder and a decoder, and performs coding for converting an analog signal into digital voice data or decoding for reconstructing digital voice data into an analog signal. More specifically, at the time of voice recording, the codec 22 converts an electric signal for external sound output from the microphone input unit 12 into digital voice data and provides it to the control unit 31. The digital voice data transmitted from (12) is decoded into an analog signal and output to the electronic volume adjusting unit 51. The digital audio data transmitted from the control unit 12 is audio data stored in the memory 41 by voice recording of the user.

For example, when a voice recording command is input from the input unit 14 by a user's operation, the control unit 31 stores digital voice data for external sound provided from the codec 21 in the memory 41. The memory 41 is a nonvolatile storage medium, and may be, for example, a flash memory. Therefore, even if the power supply is cut off, the digital voice data stored in the memory 41 can be maintained.

If a reproducing command of the voice data stored in the memory 41 is input from the input unit 14 by a user's operation, the control unit 31 loads the digital voice data stored in the memory 41 to load the codec 21. ) The codec 21 converts the digital voice data into an analog signal and outputs it to the electronic volume controller 51.

The electronic volume control unit 51 generates analog signals FR, FL, RR, and RL for each speaker by applying volume control and sound field effects to the analog signals, and amplifies the generated analog signals for each speaker 61. Output to. The amplifier 61 amplifies the analog signal for each speaker by a predetermined gain and outputs the same to the corresponding speakers 71, 72, 73, and 74. Therefore, the digital voice data stored in the memory 41 can be reproduced through each speaker 71, 72, 73, 74. Each of the speakers 71, 72, 73, and 74 is provided at the front right side FR, front left side FL, rear right side RR, and rear left side RL of the vehicle, respectively.

Next, a process of the control method of the voice recording apparatus shown in FIG. 1 will be described with reference to FIG. 2.

Each step of the flowchart shown in FIG. 2 is executed by the control unit 31 for voice recording and reproduction.

When the operation is started, the controller 31 determines whether a voice recording command is input from the input unit 14 (S21). In step S21, if it is determined that a voice recording command is input from the input unit 14 by a user's operation, the controller S22 stores the digital voice data input through the codec 21 in the memory 41. (S22).

As described above, sound such as voice or sound is converted into an electrical signal through the microphone 11, and predetermined signal processing is performed at the microphone input unit 12 with respect to the electrical signal, and the codec 21 is The electric signal subjected to the signal processing is converted into digital data and provided to the controller 21.

Therefore, by the step S22, the external sound may be stored in the memory 41 in the form of digital voice data. As described above, since the memory 41 is a nonvolatile memory such as a flash memory, power supply is Even if blocked, digital voice data can be maintained.

Next, the control unit 31 determines whether a reproduction command of the stored voice data is input from the input unit 14 (S23). In step S23, if it is determined that a playback command for the stored voice data is input from the input unit 14 by a user's operation, the controller S22 loads the digital voice data stored in the memory 41, The codec 21 outputs the codec 21 (S24).

Accordingly, the codec 21 converts the digital voice data into an analog signal and outputs it to the electronic volume adjusting unit 51, and the electronic volume adjusting unit 51 applies a volume control and a sound field effect to the analog signal. By generating the speaker-specific analog signals (FR, FL, RR, RL), and outputs the generated speaker-specific analog signals to the amplifier 61. The amplifier 61 amplifies the analog signal for each speaker with a predetermined gain and outputs the same to the corresponding speakers 71, 72, 73, and 74, so that the digital voice data stored in the memory 41 is stored in each speaker ( 71, 72, 73, 74).

Fig. 2 shows a flowchart incorporating voice recording and reproduction of stored voices, but the technical scope of the present invention is not limited thereto, and the flowchart may be changed to perform only voice recording, and immediately after the step S22. It is also possible to add the ability to ask the user whether the recording function has been stopped, and many of these functional variations will be apparent to those skilled in the art.

According to the present invention as described above, by using the microphone and the microphone input unit already provided in the vehicle Bluetooth module jointly with the Bluetooth module to implement a voice recording device compared to the case of configuring a separate independent voice recording device And cost reduction effect can be obtained, and voice memo and playback function by voice recording can be easily implemented as a convenient function of the vehicle.

So far, the configuration and operation of the embodiment of the present invention have been described. The present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims but also by the equivalents of the claims.

1 is a schematic configuration diagram of a voice recording apparatus using a microphone input unit provided in a Bluetooth module according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a control method of the voice recording apparatus shown in FIG. 1.

Claims (6)

A microphone for converting external sound into an electrical signal; A microphone input unit which performs predetermined signal processing on the electrical signal provided from the microphone; An input unit for inputting a recording or reproducing command of an external sound by a user's operation; A codec for converting an analog signal output from the microphone input unit into digital voice data and reconstructing the digital voice data into an analog signal when the digital voice data is input; A memory for storing digital voice data even when the power supply is cut off; And When a recording command for external sound is input from the input unit, the digital voice data converted by the codec is stored in the memory, and when a reproduction command for voice data stored from the input unit is input, the digital voice data stored in the memory is input. And a control unit for loading and outputting the codec to the codec. Voice recording device using a microphone input unit provided in the vehicle Bluetooth module. The method of claim 1, The memory is a flash memory Voice recording device using a microphone input unit provided in the vehicle Bluetooth module. The method of claim 1, An electronic volume control unit for applying a volume control and a sound field effect to the analog signal restored by the codec; An amplifier for amplifying and outputting the output signal of the electronic volume controller by a predetermined gain; And The apparatus further includes a speaker for reproducing the signal amplified by the amplifier as sound. Voice recording device using a microphone input unit provided in the vehicle Bluetooth module. The method of claim 3, wherein The speaker is composed of a plurality of speakers, each speaker is installed in the front right, front left, rear right and rear left of the vehicle, respectively. Voice recording device using a microphone input unit provided in the vehicle Bluetooth module. (a) determining whether a recording command for an external sound is input from an input unit by a user's operation; (b) if it is determined in step (a) that a recording command for external sound is input, storing digital voice data input through a microphone, a microphone input unit, and a codec in a memory; (c) determining whether a reproducing command for voice data stored from the input unit has been input by a user's operation; And (d) if it is determined in step (c) that a playback command for the stored voice data is input, loading the digital voice data stored in the memory and outputting the digital voice data to the codec; Control method of voice recording device. The method of claim 5, After the step (b), further comprising: asking a user whether the voice recording function is stopped. Control method of voice recording device.
KR1020090130402A 2009-12-24 2009-12-24 Voice recording apparatus for car audio using mic input unit provided at bluetooth module for vehicle and control method thereof KR20110073691A (en)

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KR1020090130402A KR20110073691A (en) 2009-12-24 2009-12-24 Voice recording apparatus for car audio using mic input unit provided at bluetooth module for vehicle and control method thereof

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KR1020090130402A KR20110073691A (en) 2009-12-24 2009-12-24 Voice recording apparatus for car audio using mic input unit provided at bluetooth module for vehicle and control method thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140132625A (en) * 2013-05-08 2014-11-18 삼성전자주식회사 Electronic apparatus
WO2020087563A1 (en) * 2018-10-30 2020-05-07 北京轩辕联科技有限公司 Mic switching apparatus and method for vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140132625A (en) * 2013-05-08 2014-11-18 삼성전자주식회사 Electronic apparatus
WO2020087563A1 (en) * 2018-10-30 2020-05-07 北京轩辕联科技有限公司 Mic switching apparatus and method for vehicle

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