KR20020037572A - Hands- free appratus and method of wireless handphone for car audio speaker - Google Patents

Abstract

PURPOSE: A handsfree device and method for a wireless cellular phone using a car audio is provided to perform a telephone conversation without a handsfree kit or a headset kit by applying a bluetooth of a handset or a headset to the car audio for performing a headset kit function or a handsfree kit function. CONSTITUTION: A mode selecting unit(110) has a plurality of selection modes. A function switch(120) opens and closes a path to be outputted through a speaker of a car audio when one mode is set among a plurality of selection modes of the mode selecting unit(110). A microcomputer(160) controls the function switch(120) when one mode is set among the selection modes, opens the path of the function switch(120) so that the set mode is executed, and controls a general mode and a handsfree mode. A bluetooth(200) provides a signal transmitted from a headset to the microcomputer(160) and the function switch(120). A microphone(180) inputs a voice signal to the bluetooth(200).

Description

HANDS- FREE APPRATUS AND METHOD OF WIRELESS HANDPHONE FOR CAR AUDIO SPEAKER}

The present invention relates to a handfree device and a method using Bluetooth in a vehicle, and in particular, a handset of a wireless cellular phone using a speaker of a car audio that can be used without a headset kit and a hand free kit using a car audio speaker mounted in a vehicle. A free device and method are disclosed.

Bluetooth is a technology specification that wirelessly connects portable devices such as portable PCs and portable wireless terminals within a narrow range. That is, it uses radio frequency to exchange voice and data without physical cable for communication between various digital devices.

Currently, wireless handsets are developed as a headset using Bluetooth (Bluetooth), and the vehicle can be controlled using Bluetooth.

For example, important functions such as ABS function, engine control and power steering are controlled using Bluetooth. In addition, various applications have been developed to allow users to enjoy a game using a joystick in a vehicle.

As shown in FIG. 1, a conventional Bluetooth headset includes a microphone 10, a controller 20a, a speaker 30, a blue core 40, an RF processor 50, an antenna 60, and a memory 70. It is composed.

The RF processing unit 50 receives the call message applied from the antenna 60 and outputs it to the blue core 40 side, and transmits the call message received from the blue core 40 side through the antenna 60.

The blue core 40 converts the PCM data applied from the RF processor 50 into a digital signal and outputs the digital signal to the controller 20a. The blue core 40 converts the digital signal received from the controller 20a into PCM data. )

The controller 20a converts the digital signal received from the blue core 40 into a voice signal and outputs it through the speaker 30, and converts the voice signal received from the microphone 10 into a digital signal to convert the digital signal into the blue core 40. To the side.

The memory 70 stores an operation program of the blue core 40, and compares and stores data received from the blue core 40 with data corresponding thereto.

Referring to the operation of the conventional Bluetooth headset configured as described above are as follows.

Upon reception of the call message, the PCM data received from the antenna 60 is output from the RF processor 50 to the blue core 40, and the blue core converts the PCM data into a digital signal and outputs it to the controller 20a. The controller 20a converts the applied digital signal into a voice signal and outputs the voice signal through the speaker 30.

When transmitting a call message, PCM data applied from the microphone 10 is converted into a digital signal by the controller 20a and output to the blue core 40, and the blue core 40 converts the applied digital signal into PCM data. And output to the RF processing unit 50, and transmits through the antenna 60 from the RF processing unit 50.

The conventional Bluetooth headset uses a codec 20b instead of the controller 20a of the Bluetooth handset as shown in FIG.

As shown in FIG. 3, the conventional car audio structure includes a mode selector 110, a function switch 120, an electronic volume 130, an amplifier 140, a speaker 150, a microcomputer 160, and a memory ( 170).

The mode selector 110 is composed of a tape mode, a CD mode, a radio mode, an external input mode, and the like, and the function switch 120 is selected according to a user's selection.

When the user sets the mode, the microcomputer 160 controls the function switch 120 to open the path to play the set mode.

The connected signal is first amplified through the amplifier 140 and the volume of the speaker 150 is converted by the user controlling the electronic volume 130.

The memory 170 stores an operation program of the microcomputer 160, and compares and stores the data applied to the microcomputer 160 with the corresponding data.

As described above, the Bluetooth handset or the Bluetooth headset operated separately from the car audio, making it impossible to talk without the handfree kit or the headset kit.

The present invention is to solve the problems described above, by applying the Bluetooth of the handset or headset to the car audio mounted on the vehicle so that the speaker of the vehicle to function as a headset kit or a handfree kit handset kit or headset The present invention provides a hand-free apparatus and method for a wireless terminal that enables a call without a kit.

In order to achieve the above object, a car audio mounted in a handset and a vehicle of a wireless cellular phone, comprising: a selection mode unit having a plurality of selection modes; A function switch for opening and closing a path to be output through a speaker of a car audio when one of the selection mode units is set; A microcomputer for controlling the function switch to open a path of the function switch so as to execute the set mode when one of the selection modes is set, and to control the general mode and the hand-free mode; Bluetooth for applying a signal transmitted from the handset to the microcomputer and the function switch; It provides a hand-free device of a wireless terminal using a car audio, characterized in that it comprises a microphone for inputting a voice signal to the Bluetooth.

In addition, when the audio is powered on, the controller checks whether there is an input in the external selection mode (S12); If there is an input in the external selection mode, operating the function switch to execute the current mode (S14, S15); Checking the handfree signal using the Bluetooth signal of the handset (S16); Stopping the currently running mode and switching to the Bluetooth handfree mode when the handfreet use signal is detected (S17); Receiving a call on the handset and checking a call signal from the Bluetooth of the handset (S18); When the call signal is detected, the codec receives audio data from the blue core, converts the digital signal into a digital signal, and sends the same to the function switch to use the speaker of the car audio as a hand free kit (S19); It provides a hand-free method of a wireless cell phone using the speaker of the car audio, characterized in that the step of performing the previous mode (S20) immediately after receiving a signal that the call is terminated by checking the call end signal.

1 is a structure of a Bluetooth handset applied to a conventional wireless cellular phone.

2 is a structure of a Bluetooth headset applied to a conventional wireless cellular phone.

3 is a configuration diagram of a conventional car audio installed in a vehicle.

4 is a block diagram of a car audio to which Bluetooth is applied according to the present invention.

5 is a flowchart illustrating a handfree method of a wireless cellular phone according to the present invention.

<Explanation of symbols for the main parts of the drawings>

110: selection mode unit 120: function switch

130: electronic volume 140: amplifier

150: speaker 160: microcomputer

170: memory 180: microphone

200: Bluetooth 210: Codec

220: blue core 230: RF processing unit

240: antenna 250: memory

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

As shown in FIG. 4, the hand-free device using the speaker of the vehicle according to an exemplary embodiment of the present invention includes a mode selection unit 110, a function switch 120, an electronic volume 130, an amplifier 140, and a speaker. 150, the microcomputer 160, the memory unit 170, the microphone 180, and the Bluetooth 200. The Bluetooth includes a codec 210, a blue core 220, an RF processor 230, and an antenna ( 240, a memory unit 250.

The mode selection unit 110 is composed of a tape mode, a CD mode, a radio mode, an external selection mode 1, an external selection mode 2, and the function switch 120 operates according to a user's selection.

The function switch 120 receives the control of the microcomputer 160 by mode selection of the mode selection unit 110 and opens a path to execute the selected mode.

The electronic volume 130 is installed between the function switch 120 and the amplifier 140 and is output from the function switch 120 through the amplifier 150 through the amplifier 140 by the user's operation. 150) volume is adjusted.

The microcomputer 160 receives the handfree kit use signal from the blue core 220 of the Bluetooth, stops the currently running mode or converts the mode to the Bluetooth handfree kit mode, and controls to execute the previous mode when the call ends. .

The memory 170 stores an operation program of the microcomputer 160, and compares and stores data applied from the microcomputer 160 with data corresponding thereto.

The codec 210 of the Bluetooth converts the digital signal received from the blue core 220 into an analog signal and applies it to the function switch 120.

The RF processor 230 of the Bluetooth outputs the PCM data received through the antenna 240 to the blue core 220, and transmits the PCM data received from the blue core 220 through the antenna 240.

The blue core 220 converts the PCM data received from the RF processor 230 into a digital signal, applies the microcomputer 160 and the codec 210, and converts the voice signal received from the codec 210 into PCM data. Output to RF processor 230.

The memory 250 stores an operation program of the blue core 220, and compares and stores data applied to the blue core 220 with data corresponding thereto. The microphone 180 is used to input a voice signal to the codec 210.

The operation of the present invention configured as described above will be described in detail with reference to the flowchart shown in FIG. 5.

With the power of the car audio turned on (step S11), the microcomputer 160 checks whether there is an external input in the function switch 120 (S12), and if there is no external input, executes the mode that was executed just before the power-on state. If there is an external input (S13), the function switch 120 is operated (S14) to execute the current mode (S15). Subsequently, the hand free kit use signal is examined from the Bluetooth codec 210 (S16). When the hand free kit use signal is detected, the current execution mode is interrupted by the control of the microcomputer 160 and the mode is switched to the Bluetooth hand free kit mode. (S17). Subsequently, a call is received from the handset to check whether there is a call signal (S18). When a call signal is detected, the codec receives audio data from the blue core, converts it into a digital signal, and sends it to a function switch. Is used as a hand free kit (S19), and if no call signal is detected, the process returns to step S17. Subsequently, the call end signal is inspected (S20), and when the signal of the end of the call is detected, the previous mode is executed. If the signal of the end of the call is not detected, the Bluetooth hand kit mode is continuously executed.

As described above, the present invention applies the Bluetooth of the handset to the car audio when talking on the wireless mobile phone in the car, thereby using the car audio speaker as the headset kit or the hand free kit, without using the headset kit or the hand free kit. You can talk safely.

Claims (2)

In the handset of a wireless cell phone and in the car audio A selection mode section having a plurality of selection modes; A function switch for opening and closing a path to be output through a speaker of a car audio when one of the selection mode units is set; A microcomputer for controlling the function switch to open a path of the function switch so as to execute the set mode when one of the selection modes is set, and to control the general mode and the hand-free mode; Bluetooth for applying a signal transmitted from the handset to the microcomputer and the function switch; Handheld device of a wireless cellular phone using a speaker of the car audio, characterized in that it comprises a microphone for inputting a voice signal to the Bluetooth. The controller checks whether there is an input in an external selection mode while the car audio is powered on (S12); If there is an input in the external selection mode, operating the function switch to execute the current mode (S14, S15); Checking the handfree signal using the Bluetooth signal of the handset (S16); Stopping the current mode and switching to the Bluetooth handfree mode when detecting the handfree signal using signal (S17); Receiving a call on the handset and checking a call signal from the Bluetooth of the handset (S18); When the call signal is detected, the codec receives audio data from the blue core, converts the digital signal into a digital signal, and sends the same to the function switch to use the speaker of the car audio as a hand free kit (S19); The hand-free method of a wireless cellular phone using a speaker of a car audio, characterized in that it comprises the step (S20) of executing the previous mode immediately after receiving a signal that the call is terminated by checking the call end signal.