KR20060056004A - A stereo transmitter and receiver for bluetooth - Google Patents

Abstract

The present invention relates to a stereo transceiver for providing a Bluetooth function to a non-Bluetooth product that provides a Bluetooth function to a product that is not applied to the Bluetooth to facilitate the use of pre-existing non-Bluetooth products.

The device of the present invention is a battery 21, a charge control unit 23 for charging the battery 21 using a USB power source without a separate charger, USB for connecting the charge control unit 23 with an external USB port A port 22, an antenna 25, a microphone terminal 27, a speaker terminal 28, and an LED 29 for indicating an operation state, an operation button unit 26, the operation button unit is operated by a battery power source According to the operation of (26), the corresponding function is provided, and the antenna 25 communicates with other Bluetooth devices according to the Bluetooth protocol to decode stereo audio data received through a wireless link to the speaker terminal 28 and output the microphone terminal. It is composed of a Bluetooth stereo module 24 for coding the voice signal input from the (27) to transmit to the other side via a wireless link.

Therefore, according to the present invention, the Bluetooth function can be given to products without the Bluetooth function, which can be used very conveniently.

Bluetooth, Non-Bluetooth, Stereo, Headset, USB

Description

Stereo transmitter and receiver for Bluetooth to provide non-Bluetooth products             

1 is a view illustrating a concept of connecting a product equipped with a Bluetooth and a non-Bluetooth product according to the present invention;

2 is a view illustrating a concept of connecting a non-Bluetooth product with a non-Bluetooth product according to the present invention;

3 is a block diagram illustrating a stereo transceiver for providing a Bluetooth function to a non-Bluetooth product according to the present invention;

4 is a state diagram showing an operating state of the transceiver shown in FIG. 3;

5 is a flowchart showing an operation procedure of the transceiver according to the present invention;

6 is a first embodiment of using a transmitting and receiving device according to the present invention in an acoustic apparatus;

7 is a second embodiment of using a transceiver in a mobile phone according to the present invention;

8 is an example of using the transceiver according to the present invention as an intercom.

* Explanation of symbols for main parts of the drawings

10: Bluetooth product 12: Non-Bluetooth product

20: stereo transceiver 21: battery

22: USB port 23: USB charge control unit

24: Bluetooth stereo module 25: antenna

26: operation button 27: microphone terminal

28: speaker terminal

The present invention relates to a Bluetooth wireless technology, and more particularly, to provide a Bluetooth function to a product that does not have a Bluetooth method to provide a Bluetooth function to a non-Bluetooth product that facilitates the use of pre-existing non-Bluetooth products. It relates to a transceiver.

In general, Bluetooth is a protocol for short-range wireless communication that has been proposed as an open standard by five companies, Ericsson, Nokia, Intel, Toshiba, and IBM, forming a consortium called the Bluetooth Special Interest Group (SIG) in 1998.

Such Bluetooth can provide mobility and convenient services for users according to the compact short-range wireless devices. Bluetooth-enabled devices such as Bluetooth mobile phones, laptop computers, wireless headsets, desktop computers, etc. are usually located within 10 meters. It can transmit voice or data in real time using Bluetooth devices and a wireless link (ACL or SCO). To this end, devices equipped with a Bluetooth module may be composed of a master for transmitting voice and data and a plurality of slaves for receiving voice and data, and the roles of the master and the slave are dependent on the subject transmitting the voice and data. This can change.

However, even though Bluetooth technology can provide convenience to users, products that were widely distributed before Bluetooth technology (called 'non-Bluetooth products') cannot be used because Bluetooth technology is inconvenient. Must be used as is. Furthermore, since Bluetooth technology is a recent technology and manufacturing cost increases when it is applied, many products that have not yet been adopted are widely used.

Accordingly, the present invention has been proposed to solve the above problems, and provides a Bluetooth transceiver for providing a Bluetooth function to the non-Bluetooth product to provide a Bluetooth function to the non-Bluetooth product to conveniently use the product in various forms. The purpose is to provide.

In order to achieve the above object, the device of the present invention includes a charge control unit for charging a battery; A power connection unit for connecting the charging control unit to an external power terminal; antenna; Input and output connection means; Display means for displaying an operation state; Operation button unit; And providing a corresponding function according to an operation of the operation button unit, and communicating with another Bluetooth device through the antenna according to a Bluetooth protocol to decode stereo audio data received through a wireless link and output the decoded audio data to the input / output connection means. It characterized in that it comprises a Bluetooth stereo module for coding the voice signal input from the transmission to the other side via a wireless link.

The operation button unit is composed of "F1" to "F4" and "VOL +", "VOL-", the Bluetooth stereo module performs a pairing procedure by pressing the "F1" button, operating in pairing mode, "F2" button Press to perform call processing and operate in call mode, press "F3" button to perform call procedure and operate in intercom mode, and press "F4" button to detect the remaining battery level It is displayed by the display means, and the volume control buttons (Vol +, Vol-) are used to adjust the volume during sound and cell phone calls.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a concept of connecting a Bluetooth-equipped product with a non-Bluetooth product according to the present invention, and FIG. 2 is a diagram illustrating a concept of connecting a non-Bluetooth product with a non-Bluetooth product according to the present invention.

In the case of providing a Bluetooth function to the non-Bluetooth product according to the present invention and connecting with other devices, as shown in FIG. 1, when connecting the "Bluetooth product with the non-Bluetooth product", as shown in FIG. It can be classified as connecting "non-Bluetooth products with non-Bluetooth products".

When the Bluetooth product 10 is connected to the non-Bluetooth product 12, one stereo transceiver 20 according to the present invention is used by connecting to the non-Bluetooth product 12 as shown in FIG. When the product 12a is connected to the non-Bluetooth product 12b, two stereo transceivers 20a and 20b are connected to each of the non-Bluetooth products 12a and 12b as shown in FIG.

For example, the headset 12 without the Bluetooth function can be used as a hands-free by connecting the cellular phone 10 equipped with the Bluetooth function by a wireless link (Fig. 1), and the main side stereo transmission and reception to the audio device 12a without the Bluetooth function. By connecting the device 20a and connecting the sub-side stereo transceiver 20b to an earset or a speaker 12b without a Bluetooth function, the music played on the audio device can be listened to with earphones that can move freely without wires. .

3 is a block diagram illustrating a stereo transceiver for providing a Bluetooth function to a non-Bluetooth product according to the present invention.

As shown in FIG. 3, the stereo transceiver 20 according to the present invention includes a battery 21 and a charge control unit 23 and a charge control unit for charging the battery 21 using a USB power source without a separate charger. USB port 22 for connecting 23 to an external USB port, an antenna 25, a microphone terminal 27, a speaker terminal 28, and an LED 29 for displaying an operation state, and an operation button unit (26) is operated by the battery power to provide a corresponding function according to the operation of the operation button unit 26, and the stereo audio data received via a radio link by communicating with other Bluetooth devices through the antenna 25 according to the Bluetooth protocol It is composed of a Bluetooth stereo module 24 to decode and output to the speaker terminal 28 and to code the voice signal input from the microphone terminal 27 to transmit to the other side via a wireless link.

And in the embodiment of the present invention, the operation button unit 26 is composed of "F1" to "F4" and "VOL +", "VOL-". Press "F1" button to perform pairing procedure and operate in pairing mode. Press "F2" button to perform call processing procedure and call mode, press "F3" button to perform intercom procedure Operate in mode. Pressing the "F4" button detects the battery level and indicates by LED 29 whether charging is required. Volume control buttons (Vol +, Vol-) can be used to adjust the volume of sound and mobile phone calls.

In addition, the device of the present invention can display the state of charge of the battery 21 by the LED 29 and can also display the state for Bluetooth connection (Pairing), equipped with USB charging function in a general office or home You can easily charge via USB.

Next, the operation of the stereo transceiver configured as described above will be described.

4 is a state diagram showing an operating state of the stereo transceiver shown in FIG. 3, and FIG. 5 is a flowchart illustrating an operation procedure of the stereo transceiver according to the present invention.

The stereo transceiver 20 according to the present invention is in an OFF mode 401 in a power off state and is switched to an on mode (standby mode) 402 when a power switch (not shown) is turned on (501 and 502). In the on-mode 402, the operation button is waited for input, and when an arbitrary button is input, the corresponding function is processed.

When the volume up button Vol + is input, the volume is increased, and when the volume down button Vol- is input, the volume is decreased (503, 504). When the "F4" button is input, the battery remaining mode in the battery display mode 403 is displayed by the LED or LCD (505, 506). The volume up and down buttons and the F4 button work the same in other modes.

When the " F1 " button is input in the on mode 402, after performing pairing according to the pairing procedure, the mode is switched to the pairing mode 404 (507 and 508). In the pairing mode 404, the connection between the Bluetooth devices is maintained via a wireless link.

When the "F2" button is input in the pairing mode 404, the call processing procedure is performed to connect the caller and the called party to the call mode 405, and when the call is completed, return to the pairing mode 404 (511-513).

When the "F3" button is input in the pairing mode 404, a call procedure is performed between the paired devices to allow the user to talk to each other in the intercom mode 406 (514 to 516). When the pairing is released, the mode is switched to the on mode (key input standby state) 402 (517 and 518), and when the power is turned off, the off mode 401 is entered.

Looking at the specific application examples using the stereo transceiver as described above as follows.

[Application Example 1]

FIG. 6 is a first application example of using the stereo transceiver according to the present invention to an audio device 602 having no Bluetooth function. (A) is a case in which the audio device 602 is connected to the earphone 604. B) is a case where the sound device 602 is connected to the speaker 606, and (c) is a case where the sound device 602 is connected with a microphone of the headset 608 to record.

Referring to FIG. 6, when the sound device is connected to the earphone, the microphone terminal of the main stereo transceiver 20a is connected to the audio out terminal of the sound device 602 as shown in FIG. The generic earphone 604 is connected to the sticker terminal 28 of the device 20b. In this connection state, when the "F1" button of the main stereo transceiver 20a and the sub stereo transceiver 20b is pressed, they are connected to each other in a Bluetooth manner by a pairing procedure.

When the audio device 602 is played in the pairing state after the Bluetooth connection is completed as described above, the stereo audio signal reproduced by the audio device 602 is connected to the microphone (MIC) terminal 27 of the main stereo transceiver 20a. Through the Bluetooth stereo module 24 is converted into digital, coded in a stereo manner, modulated into a radio signal is transmitted to the radio link through the antenna 25.

The sub-stereo transceiver 20b receives the radio signal through the antenna 25, demodulates it in the Bluetooth stereo module 24, decodes it, converts it into an analog signal, and converts the stereo audio signal through the speaker terminal 28 into the earphone 604. ) Accordingly, the user can conveniently listen to music in a stereo manner using the Bluetooth earphone 604. At this time, when the speaker terminal 28 of the sub-stereo transceiver 20b is connected to the large speaker 606 instead of the earphone as shown in (B), the stereo music is wirelessly listened through the large speaker 606. can do.

On the other hand, as shown in (c), when the audio device 602 is connected to the microphone of the headset 608, the speaker terminal 28 of the main stereo transceiver 20a is connected to the audio input of the audio device (602). Audio IN) terminal, and a microphone of the general headset 608 to a microphone terminal 27 of the sub-stereo transceiver 20b. In this connection state, when the "F1" button of the main stereo transceiver 20a and the sub stereo transceiver 20b is pressed, they are connected to each other in a Bluetooth manner by a pairing procedure.

In this paired state, when the user presses the recording button of the audio device 602 to operate recording and inputs the micro audio signal of the headset 608, the Bluetooth stereo module ( 24), digitally converted, coded, modulated into a radio signal, and transmitted to the radio link through the antenna 25.

The main stereo transceiver 20a receives a radio signal through the antenna 25, demodulates it in the Bluetooth stereo module 24, decodes it, converts it into an analog signal, and converts the audio signal through the speaker terminal 28 into the audio of the audio device. Output to the input terminal (Audio IN). Accordingly, the audio device 602 without the Bluetooth function can record a user's voice by using a wireless microphone, and thus can be conveniently used.

[Application Example 2]

7 is a second application of using the stereo transceiver according to the present invention in a mobile phone.

Referring to FIG. 7, since the mobile phone 702 is equipped with a Bluetooth function, the mobile phone 702 connects the stereo transceiver 20 according to the present invention only to the headset 704 having no Bluetooth function. At this time, the speaker of the headset 704 is connected to the speaker (SPK) terminal of the stereo transceiver 20, and the microphone of the headset 704 is connected to the microphone (MIC) terminal.

As described above, the general usage of the headset 704 to which the stereo transceiver 20 is connected is to first press the " F1 " button to store the connection information of the other party in two devices through a series of operations such as pairing with the mobile phone 702. When the call comes to the mobile phone 702 in a paired state, the ring signal of the call from the stereo transceiver 20 connected to the headset 704 is paired with the ringing of the mobile phone 702 is ringing at the same time. At this time, the user can press the "F2" call button in the stereo transceiver 20 to make a voice call through the headset 704 without putting the mobile phone 702 directly in the bag or clothes. If the user just wants to call the mobile phone 702 again, he / she can press the call button of the mobile phone or press the “F2” call button of the stereo transceiver 20 to attempt the call.

[Application Example 3]

8 is an application example using the stereo transceiver according to the present invention as an intercom.

In order to use the stereo transceiver according to the present invention as an intercom, the headsets 704a to 704c are connected to the main stereo transceiver 20a and the sub stereo transceivers 20b and 20c, respectively, as shown in FIG.

As such, after connecting the headsets 704a to 704c to each of the stereo transceivers 20a to 20c, press the "F1" button to connect the pairing state. When each of the stereo transceivers 20a to 20c is paired, the user presses the "F3" button to call the other party, and the users connected in response to each other are the headsets 704a to 704c and the stereo transceivers 20a to 20c. You can communicate in both directions as with intercom.

As described above, according to the present invention, the Bluetooth function can be given to products without the Bluetooth function, and thus it can be used very conveniently. In particular, when the device of the present invention is applied to already sold non-Bluetooth products, it is possible to increase the convenience of using the product at an extremely low cost, and to wirelessly connect various peripheral devices to the audio device in a stereo manner. I can listen.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed within the scope of the present invention without departing from the spirit and scope of the invention described in the claims below. I can understand that you can.

Claims (4)

A charging control unit for charging the battery; A power connection unit for connecting the charging control unit with an external power terminal; antenna; I / O connection means Display means for displaying an operation state; Operation button unit; And It provides a corresponding function according to the operation of the operation button unit and communicates with the other Bluetooth device through the antenna according to the Bluetooth protocol to decode the stereo audio data received through the radio link to the input and output connection means, from the input and output connection means A stereo transceiver for providing a Bluetooth function to a non-Bluetooth product, characterized in that it comprises a Bluetooth stereo module for coding the input voice signal to transmit to the other side over a wireless link. According to claim 1, wherein the operation button portion is made of "F1" to "F4" and "VOL +", "VOL-", The Bluetooth stereo module operates in the pairing mode by pressing the "F1" button and performing the pairing procedure. Pressing the "F2" button performs the call processing procedure and operating the call mode. Pressing the "F3" button calls the Bluetooth stereo module. A stereo transceiver for providing a Bluetooth function to a non-Bluetooth product, characterized in that operating in intercom mode by performing a procedure. The method of claim 2, wherein the Bluetooth module detects the battery level by pressing the "F4" button to indicate whether the charge is required by the display means, the volume during sound and mobile phone call by the volume control buttons (Vol +, Vol-) Stereo transceiver for providing a Bluetooth function to the non-Bluetooth product, characterized in that for adjusting the. The stereo transceiver of claim 1, wherein the power connection unit is a USB port, and the charge control unit charges a battery by a USB power source.

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