KR100342061B1 - Apparatus for inputting and outputting sound data by using FM transmitter - Google Patents

Abstract

The present invention relates to a voice data input / output device using an FM transmitter. When a voice signal is input from the stereo jack 15 connected to the MP3 player 10, the walkman 11, the CD player 12, and the earphone jack 16 connected to the mobile phone 13, the power control unit 26 is driven to operate the power supply unit. A signal detector 21 for supplying power to the FM transmitter 20 by 27; A stereo modulator 22 for providing an FM modulated voice signal to the voice signal input from the signal detector 21 when the power is supplied; A signal oscillator 23 which receives an FM modulated voice signal and provides a voice signal converted into an FM radio signal (75 MHz to 108 MHz) according to a frequency control signal; A frequency regulator 24 for providing a frequency control signal to the signal oscillator 23 to convert the frequency in a range; A high frequency amplifier 25 for amplifying a voice signal converted from the signal oscillator 23 into an FM radio signal; An antenna 31 for wirelessly transmitting the voice signal amplified from the high frequency amplifier 25 to the FM radio receiver 50, the car stereo 51, and the hi-fi audio 52; And a voice processing signal unit 28 for amplifying and level converting the voice signal input from the microphone 32 to the mobile phone 13 through the earphone jack 16. Therefore, the FM transmitter 20 can be used to listen to the FM radio receiver 50, the car stereo 51, the hi-fi audio 52, etc. through the MP3 player 10, the walkman 11, the CD player 12, and the like. Can be.

Description

Apparatus for inputting and outputting sound data by using FM transmitter}

The present invention relates to a device using an FM transmitter, in particular, MP3 player, CD player, Walkerman can listen to the FM radio receiver, car stereo and home audio system using the RF wireless communication, the mobile phone, The present invention relates to a voice data input / output device using an FM transmitter, which is an RF wireless communication device capable of making a call using wireless communication and a car stereo of a car.

1 is a conventional mobile phone device that can be received by FM radio (Korean Patent Publication No. 1999-073626) can receive a hands-free mobile phone and personal audio installed in a vehicle by using FM radio frequency radio to facilitate the driver's convenience can do.

Referring to FIG. 1, a DC power supply unit supplies power to each circuit with a stable constant voltage through a DC / DC converter, and receives an input of an external KEY input unit to control RF (radio frequency) with a VT voltage of a PLL method. A CPU control unit for displaying a clock, a date, and a frequency on the LCD display and controlling a message recording unit; an audio and data input detection unit for receiving a signal from an external device and transmitting the detected signal to a CPU and transmitting the audio and data inputs; The OSC oscillator receives the PLL signal sent from the CPU control unit, changes the VT voltage, and sends the oscillation frequency back to the CPU control unit to make the desired frequency, and modulates and amplifies the audio signal and data.

By the way, MP3 player, CD player and Walkerman can listen mainly through the earphone or the speaker attached to itself, and the conventional hands-free device does not use the car stereo of the car and attaches the speaker and the microphone to itself and is integrated. It is intended to be used.

Therefore, in the case of MP3 player, CD player, and Walkerman, the ear hurts when listening to music when listening to music, and it is difficult to listen while driving a car, and there is a problem of listening alone instead of several people.

The present invention has been proposed to solve the above problems of the prior art, and the object of the present invention is to use a car stereo while driving a car in the case of an MP3 player, a CD player and a walkman (RF module or FM transmitter). You can listen to it, use the audio system without using ear-phones, and enjoy the good sound quality and many people. For hands-free devices (FM transmitter or hands-free call unit), use the car's car stereo. The present invention provides an audio data input / output device using an FM transmitter capable of talking hands-free.

1 is a block diagram of a mobile phone device capable of receiving conventional FM radio.

2 is a system configuration diagram of a popular FM transmitter module including a built-in module according to a first embodiment of the present invention.

3 is a system configuration diagram of an integrated hands-free high-end type FM transmitter module according to a second embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: MP3 Player 11: Walkman

12: CD Player 13: Cell Phone

15: stereo jack 16: earphone jack

20: FM transmitter 21: signal detector

22: Stereo Modulator 23: Signal Oscillator

24: frequency regulator 25: high frequency amplifier

26: power control unit 27: power supply unit

28: voice processing signal unit 29a: CPU

29b LCD display 29c Frequency synthesizer (PLL IC)

29d: special code processor 31: antenna

32: microphone 33: power jack

50: FM radio receiver 51: car stereo

52: Hi-Fi Audio

In order to achieve the above object, the present invention provides an input device such as an MP3 player 10, a walkman 11, a CD player 12, a mobile phone 13, a stereo jack 15, an earphone jack 16, a microphone ( 32. An FM transmission system having an output device such as a power supply jack 33, an FM radio receiver 50, a car stereo 51, and a hi-fi audio 52, comprising: the MP3 player 10 and the walkman ( 11) and when the audio signal is received from the mobile phone 13 connected to the stereo jack 15 or the earphone jack 16 connected to the CD player 12, the power control unit 26 is driven by the power supply unit 27. A signal detector 21 for supplying power to the FM transmitter 20; A stereo modulator (22) for FM-modulating the voice signal input from the signal detector (21) to provide an FM modulated voice signal when power is supplied; A signal oscillator 23 for receiving the FM modulated voice signal from the stereo modulator 22 and providing a voice signal converted into an FM radio signal (75 MHz to 108 MHz) according to a frequency control signal; A frequency regulator (24) for providing said frequency control signal to said signal oscillator (23) for converting frequencies in an FM radio signal (75 MHz to 108 MHz) range; A high frequency amplifier 25 for amplifying a voice signal converted from the signal oscillator 23 to the FM radio signal (75 MHz to 108 MHz); An antenna (31) for wirelessly transmitting the audio signal amplified from the high frequency amplifier (25) to the FM radio receiver (50), the car stereo (51), and the hi-fi audio (52) as output devices; And when configured as a hands-free device for transmitting the converted voice signal to the mobile phone 13 through the earphone jack 16 by controlling the amplification and level of the voice signal input from the microphone 32 as a transmission path Provided is a voice data input and output device using an FM transmitter, characterized in that composed of a voice processing signal unit 28.

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

2 is a system of a popular FM transmitter module including a built-in module according to a first embodiment of the present invention, a signal detector 21, a stereo modulator 22, a signal oscillator 23, a frequency regulator 24, a high frequency amplifier ( 25), a power supply control section 26, a power supply section 27, and a voice processing signal section 28.

As an input device, a stereo jack 15 for connecting the MP3 player 10, a walkman 11, a CD player 12 and the FM transmitter, and an earphone jack 16 for connecting the mobile phone 13 and the FM transmitter are used. do.

In addition, the FM transmitter 20 has an antenna 31, a microphone 32, and a power jack 33 connected to the other side, and an FM radio receiver 50, a car stereo 51, and hi-fi audio 52 as output devices. Use

The signal detector 21 has a voice from the mobile phone 13 connected to the stereo jack 15 or the earphone jack 16 connected to the MP3 player 10, the walkman 11, and the CD player 12. When a signal is input, the power control unit 26 is driven to supply power to the FM transmitter 20 by the power supply unit 27.

When the power is supplied, the stereo modulator 22 FM-modulates the voice signal input from the signal detector 21 to provide the FM modulated voice signal to the signal oscillator 23.

The signal oscillator 23 receives the FM modulated voice signal from the stereo modulator 22 and converts the voice signal converted into an FM radio signal (75 MHz to 108 MHz) according to a frequency control signal to the high frequency amplifier 25. to provide.

The frequency regulator 24 provides the frequency control signal to the signal oscillator 23 to convert the frequency in the FM radio signal (75MHz ~ 108MHz) range.

The high frequency amplifier 25 amplifies the voice signal converted into the FM radio signal (75MHz ~ 108MHz) from the signal oscillator 23 to provide to the antenna 31.

The antenna 31 wirelessly transmits the voice signal amplified from the high frequency amplifier 25 to the FM radio receiver 50, the car stereo 51, and the hi-fi audio 52 which are output devices.

When the voice processing signal unit 28 is configured as a hands-free device, the voice signal converted from the voice signal input from the microphone 32 is controlled through the earphone jack 16 as a transmission path. Transfer to the mobile phone (13).

The microphone 32 may be installed in a hands-free device for convenience of a device, and a microphone may be installed in a sun visor to improve transmission sound quality such as echo and ringing.

3 is a system 20 of an integrated hands-free advanced FM transmitter module according to a second embodiment of the present invention is a signal detector 21, a stereo modulator 22, a signal oscillator 23, a high frequency amplifier 25, a power supply The control unit 26, the power supply unit 27, the audio processing signal unit 28, the CPU 29a, the LCD display unit 29b, the frequency synthesizer (PLL IC) 29c, and the special code processor 29d. The added device is described below.

The CPU 29a controls the LCD display unit 29b for showing to the user at the time of frequency conversion and function selection, and controls the frequency synthesizer (PLL IC) 29c to facilitate frequency conversion. The special code processing unit 29d, which is a special code oscillator, is controlled to automatically operate the car stereo 51, and the power control unit 26 controls the life of the battery.

The LCD display 29b adjusts the frequencies of the car stereo 51 and the FM transmitter 20 and displays them on the LCD for the user's convenience when implementing special functions.

The frequency synthesizer (PLL IC) 29c conveniently converts to a desired frequency in the range of 75 MHz to 108 MHz, which is an FM radio signal.

The special code processing unit 29d is a special code oscillator so that when the car stereo 51 is turned off or is listening to a broadcast of another channel, a special code can be automatically received when a call is received. , The traffic broadcast code) is used for the purpose of controlling the car stereo (51).

Therefore, by using the FM transmitter 20, which is an audio data input / output device using the FM transmitter according to the present invention, an output device is output through the MP3 player 10, the walkman 11, the CD player 12, and the like. The device can listen to the FM radio receiver 50, the car stereo 51 and the hi-fi audio 52.

As described above, the voice data input / output device using the FM transmitter according to the present invention can be easily implemented in the low-end, mid-range, and high-end type according to the price of the product. You can listen to music using the audio system of the system, so that many people can listen to it, you can not listen to the ear by not using the earphones, and you can listen to the music by using the hi-fi audio system. Car stereo of hands-free call unit) is used, which has good sound quality and convenient effect of installation.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. It will be appreciated.

Claims (3)

Input device such as MP3 player 10, Walkman 11, CD player 12, mobile phone 13, stereo jack 15, earphone jack 16, microphone 32 and power jack 33, FM In an FM transmission system having an output device such as a radio receiver 50, a car stereo 51, a hi-fi audio 52, etc .: When the audio signal comes from the stereo jack 15 connected to the MP3 player 10, the walkman 11 and the CD player 12, or the mobile phone 13 connected to the earphone jack 16, the power control unit A signal detector 21 for driving 26 to supply power to the FM transmitter 20 by the power supply 27; A stereo modulator (22) for FM-modulating the voice signal input from the signal detector (21) to provide an FM modulated voice signal when power is supplied; A signal oscillator 23 for receiving the FM modulated voice signal from the stereo modulator 22 and providing a voice signal converted into an FM radio signal (75 MHz to 108 MHz) according to a frequency control signal; A frequency regulator (24) for providing said frequency control signal to said signal oscillator (23) for converting frequencies in an FM radio signal (75 MHz to 108 MHz) range; A high frequency amplifier 25 for amplifying a voice signal converted from the signal oscillator 23 to the FM radio signal (75 MHz to 108 MHz); An antenna (31) for wirelessly transmitting the audio signal amplified from the high frequency amplifier (25) to the FM radio receiver (50), the car stereo (51), and the hi-fi audio (52) as output devices; And When configured as a hands-free device, a voice for transmitting the converted voice signal to the mobile phone 13 through the earphone jack 16 by controlling the amplification and level of the voice signal input from the microphone 32 as a transmission path. An audio data input / output device using an FM transmitter, characterized by comprising a processing signal unit (28). Input device such as MP3 player 10, Walkman 11, CD player 12, mobile phone 13, stereo jack 15, earphone jack 16, microphone 32 and power jack 33, FM In an FM transmission system having an output device such as a radio receiver 50, a car stereo 51, a hi-fi audio 52, etc .: When the audio signal comes from the stereo jack 15 connected to the MP3 player 10, the walkman 11 and the CD player 12, or the mobile phone 13 connected to the earphone jack 16, the power control unit A signal detector 21 for driving 26 to supply power to the FM transmitter 20 by the power supply 27; A stereo modulator (22) for FM-modulating the voice signal input from the signal detector (21) to provide an FM modulated voice signal when power is supplied; A signal oscillator 23 for receiving the FM modulated voice signal from the stereo modulator 22 and providing a voice signal converted into an FM radio signal (75 MHz to 108 MHz) according to a frequency control signal; A high frequency amplifier 25 for amplifying a voice signal converted from the signal oscillator 23 to the FM radio signal (75 MHz to 108 MHz); An antenna (31) for wirelessly transmitting the audio signal amplified from the high frequency amplifier (25) to the FM radio receiver (50), the car stereo (51), and the hi-fi audio (52) as output devices; When configured as a hands-free device, a voice for transmitting the converted voice signal to the mobile phone 13 through the earphone jack 16 by controlling the amplification and level of the voice signal input from the microphone 32 as a transmission path. A processing signal section 28; An LCD display unit 29b for matching the frequency of the car stereo 51 with the FM transmitter 20 and displaying the LCD on a LCD for the user to conveniently see when implementing a special function; A frequency synthesizer (PLL IC) 29c for conveniently converting an FM radio signal into a desired frequency in a range of 75 MHz to 108 MHz; When the car stereo 51 is turned off or listening to a broadcast of another channel, the car stereo (PILOT SIGNAL) is used to automatically receive a call when a call is received. A special code processor 29d used for controlling 51); And Control the LCD display unit 29b to show to the user at the time of frequency conversion and function selection, control the frequency synthesizer (PLL IC) 29c to facilitate frequency conversion, and control the car stereo 51. FM, characterized in that it comprises a CPU (29a) for controlling the special code processing unit (29d) which is a special code oscillator so as to operate automatically, and for controlling the power control unit (26) for extending the life of the battery Voice data input and output device using a transmitter. The method according to claim 1 and 2, The MP3 player 10, the walkman 11, and the CD player as the FM radio receiver 50, the car stereo 51, or the hi-fi audio 52, which are output devices using the FM transmitter 20. A voice data input / output device using an FM transmitter, characterized in that it listens through an input device such as (12).