KR200384801Y1 - Wireless audio transferring apparatus - Google Patents

Abstract

The present invention relates to a wireless sound repeater that is capable of wirelessly transmitting sound played in an MP3 player to be played through an audio device of a vehicle and charging a cell phone battery if necessary.

In a wireless acoustic repeater according to a preferred embodiment, first and second power stages connected to a vehicle battery power supply are formed at a front portion thereof, and a charge display device for displaying a state of charge of a mobile phone battery and a plurality of set frequencies are formed on an outer surface thereof. A frequency selection unit for selecting is formed, and at the rear thereof, a charging connector for charging a mobile phone battery and an audio connector for receiving a playback sound of an MP3 player are connected to wirelessly transmit the sound reproduced from the MP3 player to an audio device of the vehicle. And a sound relay unit having a circuit configuration to be reproduced and output in a frequency channel set by the frequency selector.

Description

Wireless audio repeater {WIRELESS AUDIO TRANSFERRING APPARATUS}

The present invention relates to a wireless sound repeater, and more particularly, wireless sound for reproducing at high power by wirelessly transmitting a sound reproduced by an independent audio reproducing device (especially an MP3 player) to a vehicle audio device in a frequency-matched state. It relates to a relay device.

Recently, an MP3 player using a semiconductor memory as a sound source data storage medium has attracted attention as a new audio device, and the MP3 player repeatedly uses various digital sound source data due to the development of data communication technology called 'Internet'. It has a feature of downloading and playing.

On the other hand, a vehicle is usually equipped with an audio device, commonly referred to as 'car audio', which is basically equipped with AM / FM radio function and cassette tape and / or compact disk (CD) playback function. Will be equipped.

In addition, hands-free are additionally installed in the vehicle to support necessary calls by the CDMA / PCS cellular phone while driving.

Here, since an audio device (i.e., a car audio) installed in a vehicle can reproduce only a sound played by a cassette tape, a CD, or an AM / FM radio, an MP3 player to which earphones or headphones are usually connected. The function of outputting the sound reproduced in the vehicle in association with the audio device of the vehicle is not designed.

Therefore, because the MP3 player must not listen to the playback sound of the MP3 player while driving the vehicle, only the sound of the cassette tape / CD or the radio must be listened to. Will be disadvantageous.

In addition, preferably, when a call is made by a CDMA / PCS mobile phone while playing sound through the MP3 player in the vehicle, the volume of the MP3 player should be lowered or the MP3 player should be stopped. Only a monotonous voice call is possible, so it is desirable to apply the sound played in the MP3 player as the background music of the handset phone.

Accordingly, the present invention has been made in view of the above-described situation of the related art, and its main purpose is to wirelessly relay the sound reproduced by the MP3 player to the audio device of the vehicle and to output the wireless sound with the charging function of the mobile phone. It is to provide a relay device.

Another object of the present invention is designed to add the charging function of the mobile phone while the sound played in the MP3 player is wirelessly relayed to the audio device of the vehicle, and the sound played in the MP3 player during the call of the mobile phone is applied as the call background music. It is to provide a wireless acoustic repeater.

In order to achieve the above object, according to a preferred embodiment of the present invention, the front and the first and second power supply terminals are connected to the vehicle battery power source is formed, the outer surface and the charge display device for displaying the state of charge of the mobile phone battery; A frequency selector for selecting a plurality of set frequencies is formed, and a rearward charging connector for charging the mobile phone battery and an audio connector for receiving a playback sound of the MP3 player are connected to the vehicle to reproduce the sound reproduced by the MP3 player. There is provided a wireless sound repeater comprising a sound relay unit which is wirelessly transmitted to an audio device of the present invention and configured to be reproduced and output on a frequency channel set by the frequency selector.

Advantageously, an audio conversion processing unit for converting the sound from the MP3 player into an oscillation signal corresponding to the selected frequency inside the sound relay unit, and converting the battery power of the vehicle into the charging voltage of the mobile phone battery. A DC / DC converter for converting, an amplifier for amplifying the sound converted by the audio conversion processor, an audio output unit for wirelessly transmitting the amplified MP3 sound, and a state of charge of the mobile phone battery. A charging display unit is configured to display by.

Preferably, the outer surface of the audio relay unit has a mode selection unit for setting the MP3 sound as the call background sound during the mobile phone call, a call sound connector connected to the call sound input output unit of the mobile phone, and an earphone for input of a call sound and an output of a call sound. A microphone is further installed, and the audio conversion processing unit is further equipped with a function of mixing the MP3 sound with a call sound input through the earphone microphone and a function for controlling a path of the mixed sound. Under the control of the audio conversion processing unit, a sound path switching unit having a path for wirelessly transmitting the MP3 sound to the audio device and a path for transmitting the mixed call sound / MP3 sound to the cellular phone side is further provided.

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

1 shows a configuration of a wireless acoustic repeater according to a first embodiment of the present invention, Figure 2 shows an internal block configuration of the wireless acoustic repeater shown in FIG.

In the figure, 10 is a sound relay unit of the wireless sound repeater according to the present invention, the rear of the sound relay unit 10, the acoustic connector 12 detachable to the earphone / headphone jack 16 of the MP3 player 14 Is connected.

In addition, a circuit configuration for transmitting the sound from the MP3 player 14 received through the acoustic connector 12 to the audio device 18 of the vehicle wirelessly is in the interior of the sound relay unit 10. .

The audio device 18 includes a control panel for setting AM / FM radio / cassette tape and / or CD playback mode, setting channel frequency in AM / FM radio mode, and displaying current time or mode on the display panel ( 20) and a plurality of speakers 22 for outputting stereo sound of L channel / R channel.

In addition, the rear of the audio relay unit 10 is also provided with a charging connector 24 for charging the battery provided in the CDMA / PCS mobile phone 26,

Preferably, the front of the sound relay unit 10, the first power supply terminal (+) 10a connected to the '+' terminal of the battery power of the vehicle and the second power supply connected to the '-' terminal of the battery power A stage (-) 10b is provided, and on the outer surface of the sound relay unit 10, a sound mode reproduced by the MP3 player 12 is wirelessly transmitted to select a frequency mode (88.2 MHz or 88.9 MHz) to be output. The frequency selection unit 10c and a charge display device 10d by the LED device for displaying the state of charge for the mobile phone 26 is provided.

Preferably, according to the present invention, when the frequency of a specific channel is set alone in the audio device 18, the frequency selector 10c plays back the MP3 player 14 when the reception state for the frequency becomes poor. Considering that the sound is reproduced poorly, the frequency of a plurality of channels (e.g., 88.2 MHz and 88.9 MHz: these channel frequencies can be changed as necessary) can be used to select a frequency of a good channel among the plurality of frequency channels. To make it possible.

In the present invention, the power stabilization unit (power regulator) 30 for stabilizing a vehicle battery power supply (eg, 12V or 24V) in the first / second power supply terminals 10a and 10b in the sound relay unit 10. Is connected to the power stabilization unit 30, the DC / DC conversion unit 32 to form a charging power (Vout: 4.9V) for charging the battery of the mobile phone 26, and the DC / DC conversion unit ( A charging display unit 34 for driving the charging display element 10d is associated with comparing the power supply from 32 to the reference potential (for example, 4.8V).

In addition, the sound relay unit 10 has a frequency (88.2 MHz or 88.9 MHz) selected by the frequency selection unit 10c to transmit the sound reproduced by the MP3 player 14 to the audio device 18 of the vehicle. Oscillation unit 36 for oscillating the oscillation unit and frequency reproduced by the oscillation unit 36 by setting the frequency selection unit 10c to reproduce sound of the MP3 player 14 received through the audio connector 12. An audio conversion processing unit 38 for converting the signal to a digital signal is included.

In addition, the amplification unit 40 determines the amplification level of the sound processed by the audio conversion processing unit 38, and the sound of the audio conversion processing unit 38 whose amplification level is determined by the amplification unit 40 is wireless. An audio output unit 42 for outputting is included.

According to the first embodiment of the present invention, the audio connector 12 of the sound relay unit 10 is connected to the earphone / headphone jack 16 of the MP3 player 14, and the sound relay unit The front portion of the sound relay unit 10 including the first and second power supply terminals 10a and 10b of 10 is coupled to a cigarette lighter jack (not shown) of the vehicle.

In this state, the MP3 player 14 is set to the playback mode, the frequency selection unit 10c sets the frequency of a specific channel, and the audio device 18 is set to the FM radio mode to select the frequency. When tuned to the frequency (88.2 MHz or 88.9 MHz) set by the section 10c, the sound reproduced by the MP3 player 14 is input to the audio conversion processing section 38, and the audio conversion processing section 36 is performed. In this case, the conversion processing is performed to the frequency oscillated by the oscillator 36 according to the setting of the frequency selector 10c.

In addition, the sound converted by the audio conversion processing unit 36 and amplified at the amplification level set in the amplification unit 40 is wirelessly relayed to the audio device 18 through the audio output unit 42 and the speaker ( Through 22).

On the other hand, when the charging of the mobile phone 26 is connected to the charging jack (not shown) of the corresponding mobile phone 26, the power supply stabilizer 30 and the DC / DC converter ( The battery of the mobile phone 26 is charged by the power source Vout converted at 32, and the charging state is visually displayed by the charging display unit 34 through the charging display element 10d.

therefore. In the first embodiment of the present invention, the sound reproduced by the MP3 player 14 is wirelessly relayed from the audio relay unit 10 to the audio device 18 of the vehicle. If necessary, charging of the mobile phone 26 is also possible.

4 is a block diagram of a wireless sound repeater according to a second embodiment of the present invention, and FIG. 5 is a block diagram illustrating an internal block configuration of the sound relay unit shown in FIG.

According to the second embodiment, in addition to the audio relay function and the cellular phone charging function of the MP3 player of the first embodiment, a function of providing a sound reproduced by the MP3 player as a background sound during a mobile phone call is additionally configured.

That is, a first power supply terminal (+) 52a and a second power supply terminal (-) 52b connected to the battery power of the vehicle are provided in front of the acoustic relay unit, which is indicated by 50, and the mobile phone 62 is located on the outer surface thereof. The charging display element 54a for displaying the battery charge state of the battery and the sound reproduced by the MP3 player 58 to match the frequency of a specific channel (for example, 88.2 MHz or 88.9 MHz) of the audio device 18 of the vehicle. And a mode selector 54c for providing the sound played by the MP3 player 58 to the call background music during the call of the mobile phone 62.

In addition, the audio relay unit 50 includes an acoustic connector 56 connected to the earphone / headphone jack 58a of the MP3 player 58, a charging connector 60 for charging the battery of the mobile phone 62, A call tone connector 64 connected to the call input / output jack 62a of the mobile phone 62 and an E-phone / microphone 66 for inputting and reproducing the call tone for the mobile phone 62 are further provided.

The earphone / microphone 66 is integrally formed with an earphone 66a for reproducing and outputting a call tone and a microphone 66b for inputting a call tone.

Correspondingly, referring to FIG. 5, the voltage stabilizer 70 stabilizes battery power of the vehicle, and the oscillator 72 selects the frequency selector 54b from a plurality of frequency channels (eg, 88.1 MHz and 88.9 MHz). By oscillating the frequency signal of a specific channel selected.

The audio conversion processing unit 74 converts the sound reproduced by the MP3 player 58 based on the frequency signal oscillated by the oscillation unit 72, and calls the mobile phone by the mode selection unit 54c. When the mode for transmitting the background sound is set, the sound reproduced from the MP3 player 58 and the call sound input from the microphone 66b of the earphone / microphone 66 are mixed, through the call tone connector 64 (out). The processing to be delivered is also performed.

Here, the other party's call sound (IN) input from the call connection plug 64 is input to the audio conversion processing unit 74 and mixed with the sound reproduced in the MP3 player 58 and then the earphone / microphone 66 May be played through the earphone 66a.

According to the second embodiment of the present invention, the audio output unit 78 has the path of the MP3 sound under the control of the audio conversion unit 74 according to the ON / OFF of the call background sound mode of the mode selection unit 54c. Acoustic path switching unit 78 for switching the is connected.

The sound path switching unit 78 wirelessly outputs the sound output from the audio output unit 78 (that is, the MP3 sound) when the phone sound background mode is turned off by the mode selection unit 54c. 18, the MP3 sound and the microphone 66b outputted from the audio output unit 78 are maintained when the telephone tone background mode is turned on by the mode selection unit 54c. Is switched to a path that is output through the earphone 66a (and transmitted through the call tone connector 64) in a state in which a call tone (or a tone received through the call tone connector 64) is mixed. .

In addition, the voltage stabilizer 70 converts and supplies (Vouldt) the battery power (12V or 24V) of the vehicle to a voltage (4.9V) for battery charging of the mobile phone 62 (Vouldt). A charge display unit 84 is connected to allow 82 to be connected and to display the battery charge state of the mobile phone 62 by the charge display device 84.

In the second embodiment of the present invention, the acoustic connector 56 of the audio relay unit 50 is connected to the earphone / headphone jack 58a of the MP3 player 58, and the first and second power sources. The front portion of the sound relay unit 50 including the stages 52a and 52b is coupled to a cigarette lighter jack (not shown) of the vehicle, and the call tone connector 64 is a call tone input / output jack 62a of the mobile phone 62. Is connected to.

In this state, the MP3 player 58 is set to the playback mode, the frequency selection unit 54a sets the frequency of a specific channel, and the audio device 18 is set to the FM radio mode to select the frequency. When tuned to the frequency (88.2 MHz or 88.9 MHz) set by the section 54a, the sound reproduced by the MP3 player 58 is input to the audio conversion processing section 74, and accordingly the audio conversion processing section ( In step 74, the conversion processing is performed to the frequency oscillated by the oscillator 72 according to the setting of the frequency selector 54a.

In addition, the sound converted by the audio conversion processing unit 72 and amplified at the amplification level set in the amplifying unit 76 is transferred from the audio output unit 78 through the path Fout of the sound path switching unit 80. It is relayed to the audio device 18 and output through the speaker 22.

On the other hand, when the call background sound mode is turned on by the mode selection unit 54c, the sound path switching unit 80 switches the sound path under the control of the audio conversion processing unit 72 so that the earphone 66a and the It switches to the telephone tone connector 64 (out) side.

Then, the audio conversion processing unit 74 mixes the sound reproduced by the MP3 player 58 and the call sound input from the microphone 66b, thereby separating the sound path switching unit 80 from the audio output unit 78. The MP3 player may be input to the mobile phone 62 through the call tone connector 64 to be delivered to the other party, and the MP3 player may also receive the received sound received by the mobile phone 62 and transmitted through the call tone connector 64. 58 is output to the earphone 66a through the sound path switching unit 80 from the audio output unit 78 in a mixed state with the reproduced sound, and accordingly the call mode of the mobile phone 62. In the MP3 player 58, it is possible to apply the sound reproduced as the call background sound.

On the other hand, when the cell phone 62 needs to be charged, when the charging plug 60 is connected to a charging jack (not shown) of the corresponding cell phone 62, the power stabilizer 70 and the DC / DC converter The battery of the mobile phone 62 is charged by the power source Vout converted at 82, and the state of charge thereof is visually displayed by the charge display unit 84 through the charge display element 54a.

Accordingly, in the second embodiment of the present invention, the sound reproduced by the MP3 player 58 is wirelessly relayed to the audio device 18 of the vehicle by the sound relay unit 50, or the mode selection unit 54c is output. When the call background sound mode is set, the sound reproduced by the MP3 player 58 is mixed with the call sound from the microphone 66b (or the handset sound of the mobile phone 62), and if necessary, the mobile phone ( The charging function for 62) is achieved.

On the other hand, the present invention is not limited to the application examples described above, various changes and modifications can be made within the scope not departing from the technical gist and point of the invention. For example, with respect to the mode selection unit 54c, the sound reproduced by the MP3 player 58 and wirelessly transmitted to the audio device 18 of the vehicle during the operation is paused for the call of the mobile phone 62. You can change it to

As described above, according to the wireless audio repeater according to the present invention, the sound reproduced in the MP3 player is wirelessly relayed to the audio device of the vehicle to be reproduced through a specific channel frequency, thereby enabling high output reproduction of the sound source stored in the MP3 player. If necessary, the mobile phone battery is also charged by the battery power of the vehicle.

In addition, when the call background sound mode is set by the mode selection unit, the sound reproduced by the MP3 player may be transmitted by mixing the call sound input from the microphone into the call background music.

1 is a view showing a wireless acoustic repeater according to a first embodiment of the present invention,

FIG. 2 is a block diagram illustrating an internal block configuration of the acoustic relay unit shown in FIG. 1;

3 is a view showing a wireless acoustic repeater according to a second embodiment of the present invention,

4 is a block diagram illustrating an internal block configuration of the acoustic relay unit illustrated in FIG. 3.

* Description of the symbols for the main parts of the drawings *

10,50: sound relay unit, 14,58: MP3 player,

18: car audio equipment, 26,62: cell phone,

30, 70: voltage stabilizer, 36, 72: oscillator,

38, 72: audio conversion processing unit, 42, 78: audio output unit,

78: sound path switching unit.

Claims (3)

First and second power stages connected to the vehicle battery power supply are formed in the front portion, and a charge display element for displaying a mobile phone battery charge state and a frequency selection portion for selecting a plurality of set frequencies are formed on the outer surface thereof. There is a charging connector for charging the mobile phone battery and an audio connector for receiving the playback sound of the MP3 player is connected, the sound set by the MP3 player wirelessly transmits to the audio device of the vehicle frequency set by the frequency selection unit A wireless sound repeater comprising a sound relay unit configured to be reproduced output from the channel. The apparatus of claim 1, wherein an audio conversion unit converts the sound from the MP3 player into an oscillation signal corresponding to the selected frequency and converts the sound from the MP3 player into an oscillation signal corresponding to the selected frequency. A DC / DC conversion unit for converting to a charging voltage, an amplification unit for amplifying the sound converted by the audio conversion processing unit, an audio output unit for wirelessly transmitting the amplified MP3 sound, and the state of charge of the mobile phone battery A wireless acoustic repeater, characterized in that the charge display unit configured to be displayed by the charge display element. According to any one of claims 1 and 2, wherein the outer surface of the sound relay unit is connected to a mode selection unit for setting the MP3 sound as the call background sound during the mobile phone call and the call tone connector and the call tone output unit of the mobile phone An earphone microphone for inputting and outputting a sign language is further installed, and the audio conversion processing unit has a function of mixing the MP3 sound with a call sound input through the earphone microphone and controlling a path of the mixed sound. The audio output unit further includes a path for wirelessly transmitting the MP3 sound to the audio device and a path for transmitting the mixed call sound / MP3 sound to the cellular phone under the control of the audio conversion processor. Wireless sound repeater further comprises.