JP2004072259A - Voice communication apparatus employing bluetooth for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a voice communication apparatus employing the Bluetooth capable of using a wireless hands-free function for a mobile phone in an automobile. <P>SOLUTION: The voice communication apparatus 1 employing the Bluetooth for an automobile has an enclosure 2 provided with a cigar lighter plug section 3 wherein a Bluetooth module 4, a speaker 5, and a microphone 6 are built in. When the voice communication apparatus employing the Bluetooth for the automobile is plugged in a cigar lighter socket, the wireless network between the communication apparatus 1 and the mobile phone mounted with the Bluetooth in the interior of the automobile is established, the speaker 5 sounds a received voice of the mobile phone and a transmission voice is transmitted to the mobile phone through the microphone 6. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a voice communication device using Bluetooth, and more particularly to a Bluetooth voice communication device for a vehicle.
[0002]
Problems to be solved by the prior art and the invention
Hands-free kits are commercially available for using a mobile phone in a car, but the microphone and speaker constituting the hands-free kit must be connected to the mobile phone with a cord, and connection is troublesome. The disadvantage is that the code gets in the way.
[0003]
Therefore, a technical problem to be solved in order to eliminate the above-mentioned drawbacks arises by eliminating a cord for connecting a mobile phone or the like to a microphone and a speaker, and an object of the present invention is to solve the above problem. And
[0004]
[Means for Solving the Problems]
The present invention proposes to achieve the above object, and includes a Bluetooth module, a microphone and a speaker connected to the Bluetooth module in a housing having a cigarette lighter plug portion inserted into a cigarette lighter socket of an automobile. And a DC / DC regulator for converting a cigarette lighter socket voltage into a power supply voltage of a Bluetooth module and supplying the power supply voltage to the Bluetooth module.
[0005]
Another object of the present invention is to provide a Bluetooth audio communication device for a vehicle in which one or a plurality of cigarette lighter sockets are provided on the front surface of the housing so that the power of the vehicle can be distributed and supplied to other electronic devices.
[0006]
Another object of the present invention is to provide a Bluetooth audio communication device for automobiles having a voice recognition function of recognizing voice and converting it into command data and a voice synthesis function of converting text data into voice in addition to the above configuration.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a Bluetooth audio communication device 1 for a vehicle, in which a cigarette lighter plug 3 is formed at a rear portion of a case 2 for use by being inserted into a cigarette lighter socket provided in the vehicle. A Bluetooth module 4 is built in the body 2, a speaker 5 is provided on the front, and a microphone 6 is provided above the speaker 5. As shown in FIG. 2, one or more cigarette lighter sockets 7 are provided on the front surface of the housing 2, and the cigarette lighter plug unit 3 connects the power supply unit of the Bluetooth audio communication device 1 for car and the cigarette lighter socket 7. The power may be distributed and supplied so that a cigarette lighter or a cigarette lighter plug of other automotive electronics can be connected.
[0008]
FIG. 3 is a block diagram of the Bluetooth audio communication device 1 for a vehicle. The Bluetooth module 4 includes a microcomputer 8, a receiving unit 10, a transmitting unit 9, and a selector 11 for switching an antenna connection between the receiving unit 10 and the transmitting unit 9. I have. The audio signal output from the microphone 6 is digitally converted by the A / D converter 12 and input to the microcomputer 8, and the digital audio signal output from the microcomputer 8 is analog-converted by the D / A converter 13 and output to the speaker 5. You. The DC 12V power supplied from the cigarette lighter socket of the automobile is stepped down to a predetermined voltage by the DC / DC regulator 14 and supplied to the Bluetooth module 4. The Bluetooth audio communication device 1 for a vehicle supports a Bluetooth standard-compliant profile, can communicate with a Bluetooth-equipped mobile phone, and receives a signal from a button 16 input via an I / O controller 15 to output the mobile phone. Call / hangup operation.
[0009]
As is well known, Bluetooth is a standard for performing two-way communication by wirelessly connecting various devices such as a computer, a mobile phone, a home appliance, or a vehicle-mounted electronic device using a 2.4 GHz frequency band. A host that performs control and one to seven slaves are wirelessly connected to the host to perform packet-based data communication and real-time voice communication. Specifications Ver. 2001 as of 2001. In 1.1, the downlink data transmission rate is 721 kbps, the uplink is 57.6 kbps (maximum), and three voice channels of 64 kbps are provided separately.
[0010]
As shown in FIG. 4, when the Bluetooth audio communication device 1 for a vehicle is inserted into the cigarette lighter socket 17, the Bluetooth audio communication device 1 for a vehicle is turned on and the power control function of Bluetooth enters a low power consumption mode. When a Bluetooth-equipped mobile phone 18 (hereinafter simply referred to as a mobile phone 18) is brought into the vehicle, a network is established by an automatic network search function, and transmission / reception output is automatically controlled according to the mutual distance.
[0011]
When a call signal arrives at the mobile phone 18, a ring tone is transmitted to the Bluetooth audio communication device 1 for a car, and the ring tone flows through the speaker 5. When the button 16 of the Bluetooth audio communication device 1 for a car is pressed, a connection control signal is transmitted to the mobile phone 18 to enter a telephone conversation state, a reception sound flows from the speaker 5, and a transmission sound is collected by the microphone 6, and the mobile communication is performed. It is transmitted to the telephone 18 and transmitted from the mobile telephone 18 to the other party.
[0012]
FIG. 5 shows another usage mode, in which a car audio system 19 equipped with Bluetooth is used to form a wireless network by the car audio system 19, the Bluetooth audio communication device 1 for a car, and the portable telephone 18 brought into the car. According to the setting of the car audio system 19, the received voice of the mobile phone 18 is reproduced from the speaker 19a of the car audio system 19. This allows the head unit of the car audio system 19 to adjust the received sound volume and sound quality. Further, it is also possible to receive audio data from the car audio system 19 and reproduce music from the speaker 5 of the Bluetooth audio communication device 1 for a vehicle.
[0013]
In addition, a voice recognition engine is mounted on the Bluetooth voice communication device 1 for a vehicle, and a function of converting the voice of the speaker into command data by the voice recognition engine and transmitting the command data is provided, as shown in FIG. Command data can be wirelessly transmitted to Bluetooth-equipped devices, for example, a mobile phone 18, a car audio system 19, a car navigation system 20, and an electronic control unit 21 of a car, without using a hand while driving the car. Various functions of these devices can be operated by voice commands. In addition, by using the voice synthesizing function provided in the Bluetooth voice communication device 1 for a vehicle, text data output from these devices is converted into voice and output from the speaker 5 or displayed on the display of the car navigation system 20 as text. For example, it is possible to confirm the contents of an e-mail, a map search result, the operation status of a car, and the like by sound or display display.
[0014]
It should be noted that the present invention is not limited to the above embodiments, and various modifications are possible within the technical scope of the present invention, and it is natural that the present invention extends to those modified ones.
[0015]
【The invention's effect】
As described above, the Bluetooth voice communication device for a vehicle of the present invention is mounted on a cigarette lighter socket and wirelessly communicates with a mobile phone or the like. Therefore, unlike a conventional hands-free kit, a hands-free kit and a mobile phone Is not required to be connected by a cord, the handling is simplified, and not only the mobile phone but also other on-vehicle devices can be operated, so that the operability is remarkably improved.
[Brief description of the drawings]
FIG. 1 shows one embodiment of a Bluetooth audio communication device for a vehicle according to the present invention, wherein (a) is a front view and (b) is a side view.
FIG. 2 is an explanatory view showing another embodiment of a Bluetooth audio communication device for a vehicle.
FIG. 3 is a block diagram of a Bluetooth voice communication device for a vehicle.
FIG. 4 is a network configuration diagram using a Bluetooth audio communication device for a vehicle.
FIG. 5 is a network configuration diagram using a Bluetooth audio communication device for a vehicle.
FIG. 6 is a network configuration diagram using a Bluetooth audio communication device for a vehicle.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bluetooth audio communication device 2 for automobile 2 Case 3 Cigarette lighter plug part 4 Bluetooth module 5 Speaker 6 Microphone 7 Cigarette lighter socket 8 Microcomputer 9 Transmitter 10 Receiver 11 Selector 12 A / D converter 13 D / A converter 14 DC / DC regulator 15 I / O controller 16 Button 17 Cigarette lighter socket 18 Mobile phone

Claims (3)

A Bluetooth module, a microphone and a speaker connected to the Bluetooth module, and a cigarette lighter socket voltage are converted into a power supply voltage of the Bluetooth module and supplied to a housing provided with a cigarette lighter plug portion inserted into a cigarette lighter socket of the automobile. A Bluetooth audio communication device for a vehicle incorporating a DC / DC regulator. The Bluetooth audio communication device for a vehicle according to claim 1, wherein one or more cigarette lighter sockets are provided on a front surface of the housing so that power of the vehicle can be distributed and supplied to other electronic devices. The Bluetooth voice communication device for a vehicle according to claim 1 or 2, further comprising a voice recognition function of recognizing voice and converting it into command data, and a voice synthesis function of converting text data into voice.

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