KR200189256Y1 - a relay device for a handphone and a car-audio - Google Patents

Abstract

When making a call using a mobile phone, the car audio and speaker installed in the vehicle can be connected wirelessly so that the call can be made easily and a hands-free effect can be obtained, and it is easy to install without requiring a separate installation space. For a cell phone and a car audio relay,

A microphone 21 for converting a user's voice into an electrical signal, an audio amplifier 22 for amplifying a signal input from the microphone 21 and outputting the signal to the mobile phone 1, and a mobile phone 1 When the incoming signal is detected (28) to switch the power supply 23, the FM oscillator 24 for generating a carrier having a specific frequency, and the voice signal of the other party input from the mobile phone 1 by modulating An audio modulator 25 for outputting, an FM mixer 26 for synthesizing the signals input from the FM oscillator 24 and the voice modulator 25 and outputting them as a high frequency signal, and the FM mixer ( And an FM transmitter 27 for power amplifying the signal input from the antenna 26 and transmitting the signal through the antenna.

Description

A relay device for a handphone and a car-audio}

The present invention relates to a relay device of a mobile phone and a car audio. More specifically, when making a call using a mobile phone, a hand-free effect is achieved by wirelessly connecting a car audio and a speaker installed in a vehicle to make a call. It is possible to obtain, and does not require a separate installation space relates to the repeater of the mobile phone and car audio easy to install.

Due to the freedom of communication and the convenience of carrying, the spread of mobile phones is increasing day by day. However, despite the selfishness of civilizations, the mobile phones are gradually consensus about the necessity of etiquette as they often give noise pollution to people around them because of ringtones and high voice calls that ring at any time and place. In addition, the use of mobile phones while driving is accompanied by the reduction of attention and the danger of accidents, and the social discussion on the prohibition of the use of mobile phones while driving is being raised. to be. In particular, since Korea has a very high traffic accident rate in the world, the legislation of prohibiting the use of mobile phones while driving is being discussed.

Conventionally, in order to reduce the occurrence of an accident caused by the use of a mobile phone while driving, the driver can make a phone call without lifting a mobile phone so that both hands can be used for driving operation during a call to promote safe driving. Hands-free devices have been developed and are commercially available.

However, the conventional hands-free device requires a speaker and a microphone to be installed in the interior space of the vehicle separately from the mobile phone, and thus, the installation work is relatively difficult, and there is a problem of narrowing the interior space of the limited vehicle. .

Recently, a method of connecting a transceiver having a form that can be worn on the head, such as a headphone, to a mobile phone has also been proposed, but there is a problem that the driver feels inconvenience by having to wear the transceiver on the head for a long time.

The present invention is to solve the conventional problems as described above, the purpose of the hands-free effect by making a call by wirelessly connecting the car audio and the speaker installed in the vehicle when making a call using a mobile phone It is possible to obtain a special installation space and at the same time easy to install and easy to use, to provide a repeater of mobile phones and car audio.

1 is a connection diagram showing a state that the relay device of the mobile phone and car audio according to the present invention is applied.

2 is a block diagram illustrating a relay device for a mobile phone and a car audio according to the present invention.

Explanation of symbols on the main parts of the drawings

1: cell phone 2: repeater

3: charger 4: car audio

5: speaker

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

As shown in FIG. 1, the relay device 2 of the cellular phone and the car audio according to the embodiment of the present invention is connected to the charger 3 and is supplied with power and at the same time fixedly mounted around the driver's seat. It is electrically connected to the plug end of the), and is wirelessly connected to the car audio (4) by using a specific frequency is made of a structure that can listen to the call of the other party through the speaker (5).

As shown in Figure 2, the configuration of the relay device 2 of the mobile phone and car audio according to an embodiment of the present invention, the microphone 21 for converting the user's voice into an electrical signal, and the microphone ( An audio amplifier 22 for amplifying a signal input from 21 and outputting the signal to the mobile phone 1, a switch 23 for detecting power when the phone is received by the mobile phone 1 and supplying power to the mobile phone 1; FM oscillator 24 for generating a carrier having a specific frequency, voice modulator 25 for modulating and outputting the voice signal of the other party inputted from mobile phone 1, FM oscillator 24 and voice modulator FM mixing section 26 for synthesizing the signal input from (25) and outputting it as a high frequency signal, and FM transmitting section 27 for power amplifying the signal input from the above FM mixing section 26 and transmitting it through an antenna. It is made to include.

The relay device 2 of the mobile phone and the car audio according to an embodiment of the present invention may be configured integrally with the charger 3 for battery charging of the mobile phone 1, the configuration of the charger 3, Figure As shown in FIG. 2, the voltage controller 29 controlling the power input from the car battery, the charging unit 30 generating and outputting a charging signal, and the charging signal input from the charging unit 30. It includes a voltage adjusting unit 31 for regulating the voltage output.

By the above configuration, the operation of the relay device of the mobile phone and car audio according to the embodiment of the present invention is as follows.

When the cellular phone 1 is connected to the relay device 2 and the phone is ringed by the cellular phone 1 and rings the ring 2-3 times, the switch (by the signal detection circuit 28 of the relay device 2) switches the The power supply is supplied while the 23 is operated to operate the relay device 2.

When the relay device 2 operates as described above, the voice signal input from the mobile phone 1 is modulated by the voice modulator 25 and output to the FM mixer 26, and the FM mixer 26 The signal input from the voice modulator 25 is mixed with the carrier carrier input from the FM oscillator 24 and output to the FM transmitter 27. The FM transmitter 27 amplifies the signal input from the FM mixer 26 and transmits it through an antenna.

On the other hand, when the user detects the incoming call from the cellular phone 1, the user immediately turns on the car audio 4 and then presses the auto frequency selection (auto tuning) button or presses the previously stored frequency button. The audio 4 is capable of receiving a specific high frequency signal transmitted from the relay device 2.

The car audio 4 receives the high frequency signal transmitted from the relay device 2, demodulates the signal in the same manner as a general broadcast signal, and outputs it through the speaker 5 so that the voice of the other party is transmitted through the speaker 5. Make it sound to the user. Therefore, the user makes a call while listening to the other party's voice heard through the speaker 5 without lifting the mobile phone 1, in which case the user adjusts the received volume using the volume of the car audio 4. do.

On the other hand, while a call is being made, the user's voice is converted into an electrical signal through a high-performance microphone 21 attached to the relay device 2, and then amplified through the audio amplifier 22 to the mobile phone 1. The output allows high sensitivity transmission.

According to the embodiment of the present invention, as described above, when making a call using a mobile phone, the hands-free effect can be obtained by wirelessly connecting the car audio and the speaker installed in the vehicle to make a call. It does not require an installation space, can be provided with a repeater of mobile phones and car audio with an easy installation, easy to use effect.

Claims (2)

A microphone 21 for converting a user's voice into an electrical signal, an audio amplifier 22 for amplifying a signal input from the microphone 21 and outputting the signal to the mobile phone 1, and a mobile phone 1 Voice modulation for modulating and outputting a voice signal of the other party inputted from the mobile phone 1, a switch 23 to be supplied with power by an incoming call, an FM oscillator 24 for generating a carrier having a specific frequency, and a mobile phone 1 Input from the unit 25, the FM mixing unit 26 and the FM mixing unit 26 which synthesizes the signals input from the above-described FM oscillator 24 and the voice modulation unit 25 and outputs them as a high frequency signal. Cell phone and car audio repeater comprising an FM transmitter (27) for power amplifying the signal to be transmitted through the antenna. According to claim 1, wherein the relay device is configured integrally with the charger (3) for charging the battery of the mobile phone (1), the charger (3) is a voltage control unit for controlling the power input from the car battery ( 29), a charging unit 30 for generating and outputting a charging signal, and a voltage adjusting unit 31 for controlling and outputting a voltage of the charging signal inputted from the charging unit 30, the relay of the mobile phone and the audio Device.