KR200415707Y1 - FM Transmitter - Google Patents

Abstract

The FM wireless transmission device has a connector for inputting / outputting signals for hands-free function and power charging / discharging function, a mobile phone for storing and reproducing a call sound transmission or MP3 (MP3) audio source, and a connector directly connected to the mobile phone connector. And an FM wireless transmission module for amplifying the call sound or MP3 (MP3) audio source output through the connector to any one of a plurality of channel frequencies and then wirelessly performing band filtering. It includes an audio device that performs hands-free function by receiving a call sound or MP3 (MP3) audio sound transmitted wirelessly from the FM radio transmission module, and listens by performing a hands-free function through the audio device. MP3 (MP3) audio sound that is played when the MP3 (MP3) audio source previously stored in the mobile phone is played back. There is an effect that can be heard in the audio device by transmitting the FM (FM) radio.

Description

FM Transmitter

1 is a view showing an embodiment of an FM wireless transmission device according to the present invention

Figures 2a to 2c is a view showing the type of mobile phone connector of Figure 1

3A to 3C are views illustrating a connection state between a mobile phone and an FM wireless transmission module of an FM wireless transmission device according to the present invention.

Explanation of symbols for main parts of the drawings

100: mobile phone 110: connector

200: FM wireless transmission module 210: connector

220: PLL oscillator 230: microphone

240: channel selector switch 250: display unit

260: first filter unit 270: control unit

280: RF amplifier 290: second filter unit

300: audio device 400: sound source device

The present invention relates to a frequency modulation (FM) wireless transmission device, and more specifically, to listen to the call sound transmitted through the mobile phone connector hands-free function through the audio device, MP3 (stored in the mobile phone) MP3) The present invention relates to an FM wireless transmission device for listening to an audio device by FM radio transmission of an MP3 audio source reproduced during reproduction of an audio sound source.

With the development of mobile phones, various functions have been incorporated into mobile phones.

In particular, the built-in MP3 (MPEG Audio Layer-3: MP3) is a situation that is almost common.

In addition, the market for digital multimedia broadcasting (DMB) is opening up, which makes mobile phones more functional.

The present invention can listen to a call sound transmitted through a mobile phone connector by performing a hands-free function through an audio device, and the MP3 (MP3) audio source reproduced when the MP3 (MP3) audio source is stored in the mobile phone. It is an object of the present invention to provide an FM radio transmission apparatus for listening to an audio device by radio transmission.

A feature of the FM wireless transmission device according to the present invention for achieving the above object, is provided with a connector for inputting and outputting signals for hands-free function and power charging and discharging function, transmission and reception of call sound or MP3 (MP3) audio source Store and play the cell phone; It is provided with a connector directly connected to the mobile phone connector, amplifying the call sound or MP3 (MP3) audio source output through the connector to any one of a plurality of channel frequencies and then band-filtered FM transmission wirelessly (FM) wireless transmission module; And an audio device configured to receive hands-free functions by receiving a call sound or an MP3 (MP3) audio source transmitted wirelessly from the FM radio transmitting module.

In addition, in the FM radio transmitting apparatus according to the present invention, the FM radio transmitting module includes a PLL oscillating unit for outputting a PLL oscillation signal; A microphone for receiving a call sound of the mobile phone user and outputting the call sound to the mobile phone; A channel selection switch for selecting any one of a plurality of preset channel frequencies for transmitting the call tone or MP3 audio source; A display unit which displays a channel state according to the channel selection switch; A first filter unit for filtering a call tone or an MP3 (MP3) audio source output from the mobile phone connector; A PLL (PLL) oscillation signal output from the PLL oscillator is operated according to the PLL oscillation signal and the first filter unit to the call or MP3 (MP3) audio source is converted to the channel frequency selected by the channel selection switch A control unit for outputting; An RF amplifying unit for amplifying a radio frequency (RF) audio signal or an MP3 audio source output from the controller; In another aspect, the present invention includes a second filter unit configured to wirelessly transmit through an antenna after filtering a call sound or an MP3 (MP3) audio source amplified by the RF amplifier with a predetermined bandwidth.

In addition, the FM wireless transmission device according to the present invention is characterized in that it further comprises a sound source device other than a mobile phone is connected to the FM wireless communication module by mutual audio jacks.

In addition, in the FM wireless transmission device according to the present invention, the sound source device is characterized by using any one of the MP3 (MP3) player, navigation, or CD (Compact Disc Player: CDP).

In addition, in the FM wireless transmission device according to the present invention, the mobile phone connector is characterized by using any one of the 10-pin, 12-pin or 24-pin connector.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of the embodiments with reference to the accompanying drawings.

Hereinafter, a preferred embodiment of the FM wireless transmission device according to the present invention will be described.

1 is a view showing an embodiment of the FM wireless transmission device according to the present invention, the FM wireless transmission device is a mobile phone 100, FM wireless transmission module 200, audio The apparatus 300 and the sound source device 400 are comprised.

The mobile phone 100 has a connector 110 for inputting and outputting signals for hands-free function and power charging / discharging function, and stores and reproduces call sound transmission and reception or MP3 (MP3) audio sound source.

In addition to the mobile phone 100, any one such as a DMB (DMB) phone, MP3 (MP3) for storing and reproducing an audio sound source can be used, and the mobile phone connector 110 may be any one of a 10-pin, 12-pin, or 24-pin connector. Can be used.

The FM wireless transmission module 200 includes a connector 210 directly connected to the mobile phone 100 connector 110, and the call tone or MP3 (MP3) output through the connector 210. After amplifying an audio sound source to any one of a plurality of channel frequencies, the band is filtered and wirelessly transmitted.

The FM wireless transmission module 200 includes a connector 210, a PLL oscillation unit 220, a microphone 230, a channel selection switch 240, and a display unit ( 250, a first filter unit 260, a controller 270, an RF amplifier 280, and a second filter unit 290.

The PLL oscillator 220 outputs the PLL oscillation signal to the controller 270.

The microphone 230 is a high performance microcomputer, and receives the call sound of the mobile phone user and outputs it to the mobile phone 100.

The channel selection switch 240 selects any one of a plurality of preset channel frequencies for transmitting the call sound or MP3 audio source.

The display unit 250 displays a channel state according to the channel selection switch 240.

The first filter unit 260 filters the call sound or MP3 (MP3) audio source output from the connector of the mobile phone 110. The filtering is 15 ms in one embodiment.

The control unit 270 is operated according to the PLL oscillation signal output from the PLL oscillation unit 220 and filtered by the first filter unit 260 or MP3 audio source. Is converted to the channel frequency selected by the channel selection switch 240 and output.

The RF amplifier 280 amplifies the RF or MP3 audio source output from the controller 260.

The second filter unit 290 filters the call sound or MP3 audio source amplified by the RF amplifier with a predetermined bandwidth and wirelessly transmits the signal through an antenna (unsigned). The constant bandwidth is 87 to 90 MHz in one embodiment.

The audio device 300 is a car (CAR) or FM audio system (FM audio system), hands-free by receiving a call sound or MP3 (MP3) audio source transmitted wirelessly from the FM wireless transmission module 200. Function to make the user audible.

The sound source device 400 uses any one of an MP3 (MP3) player, navigation, or CDP, and is connected to the FM wireless communication module 200 by mutual audio jacks (not shown). Connected to output an audio source other than the mobile phone (100).

Figures 2a to c2 is a view showing the type of mobile phone connector of Figure 1, Figure 2a shows a 24-pin connector, (b) 10-pin connector, (c) 12-pin connector, respectively, Figure 3a Figure 3c is a view showing a connection state of the mobile phone and FM wireless transmission module of the FM wireless transmission device according to the present invention, Figure 3 (a) is a 24-pin connector and FM (FM) of the mobile phone (B) Connection between the 10-pin connector of the cellular phone and the FM wireless transmission module. (C) Connection between the 12-pin connector of the mobile phone and the FM wireless transmission module. Each state is shown.

When described in detail with reference to the accompanying drawings the operation of the FM wireless transmission device according to the present invention configured as described as follows.

(Example 1-Phonetic Hands Free)

First, as shown in FIGS. 2A to 2C and 3A to 3C, the user 110 performs one of the 10-pin, 12-pin, or 24-pin connectors 110 of the cellular phone 100 to perform a hands-free function. The connector 210 configured in the FM wireless transmission module 200 is connected. In this embodiment, a 24-pin connector 110 is configured in the mobile phone 100.

The connector 110 is an embodiment, as shown in Figure 2, the 10-pin connector is received the user's call through the port 2, the other party's call through the port 4, 5 or MP3 ( MP3) the audio source is output, the 12-pin connector is the user's call sound is received through the port 2, the other party's call sound or MP3 (MP3) audio source is output through the port 4, 5, the 24-pin The connector receives a call tone of the user through port 7 and outputs the call tone or MP3 audio signal of the other party through port 11.

Then, the FM wireless transmission module 200 is supplied with power through the connector 210. Since the power supply process is a known technique, a description thereof will be omitted.

In this state, the other party's call sound is output to the FM wireless transmission module 200 through the mobile phone 100 connector 110.

Then, the FM wireless transmission module 200 receives and filters the call sound of the other party output through the mobile phone 100 connector 110, converts the signal to a predetermined channel frequency, amplifies the RF, and then filters the band. And transmit it through an antenna (unsigned).

That is, the first filter unit 220 of the FM wireless transmission module 200 filters and outputs a call sound of the other party through the connector 110 of the cellular phone 100. The filtering is 15 ms in one embodiment.

The PLL oscillation unit 220 of the FM radio transmission module 200 outputs a PLL oscillation signal.

The channel selection switch 240 of the FM wireless transmission module 200 selects one channel frequency among a plurality of preset channel frequencies to transmit a call sound of the counterpart before or during use according to a user's operation. .

The display unit 250 of the FM wireless transmission module 200 displays a channel state according to the channel selection switch 240.

Then, the control unit 270 of the FM wireless transmission module 200 is operated according to the PLL oscillation signal output from the PLL oscillation unit 220 to operate the first filter unit 220. The call sound of the other party filtered and output from the channel is converted into the channel frequency selected by the channel selection switch 240 and output.

Accordingly, the RF amplifying unit 280 of the FM wireless transmission module 200 amplifies the RF of the other party's voice output from the controller 260.

Then, the second filter unit 290 of the FM wireless transmission module 200 filters the call sound of the other party amplified by the RF amplifier with a predetermined bandwidth and wirelessly transmits the signal through an antenna. The constant bandwidth is 87 to 90 MHz in one embodiment.

Subsequently, the audio device 300 is a car or FM audio system, and receives and transmits a call sound of the other party, which is wirelessly transmitted from the FM wireless transmission module 200, thereby providing a user with a hands-free function. Make it audible.

On the other hand, the microphone 230 of the FM wireless transmission module 200 is a high performance micro, and receives the call sound of the mobile phone user and outputs to the mobile phone (100).

Then, the mobile phone 100 transmits the user's call sound to the other's mobile phone through a known technique.

(Example 2-MP3 (MP3) Audio Sound Source FM (FM) Radio Transmission)

First, as shown in FIG. 2 in order for a user to perform a hands-free function, the FM wireless transmission module (FM) is connected to any one connector 110 of the 10-pin, 12-pin, or 24-pin connector configured in the cellular phone 100. The connector 210 configured at 200 is connected. In this embodiment, a 24-pin connector 110 is configured in the mobile phone 100.

The connector 110 is an embodiment, as shown, the 10-pin connector is a user's call through the port 2, the call through the port 4, 5 or the MP3 (MP3) audio of the other party A sound source is output, and the 12-pin connector receives a user's call sound through port 2, and the call sound or MP3 (MP3) audio source of the other party is output through port 4 and 5, and the 24-pin connector The user's call tone is received through port 7, and the call tone or MP3 audio source of the other party is output through port 11.

Then, the FM wireless transmission module 200 is supplied with power through the connector 210. Since the power supply process is a known technique, a description thereof will be omitted.

In such a state, when the user tries to listen to the MP3 (MP3) audio sound source pre-stored in the mobile phone 100 and listens through the audio device 300, the reproduced MP3 (MP3) audio sound source is the mobile phone 100. It is output to the FM wireless transmission module 200 through the connector 110.

Then, the FM wireless transmission module 200 receives and filters the MP3 (MP3) audio sound output through the mobile phone 100 connector 110, converts it to a predetermined channel frequency, and amplifies the RF (RF). Then, the band is filtered and transmitted through an antenna (unsigned).

That is, the first filter unit 220 of the FM wireless transmission module 200 filters and outputs the MP3 (MP3) audio source through the connector 110 of the cellular phone 100. The filtering is 15 ms in one embodiment.

The PLL oscillation unit 220 of the FM radio transmission module 200 outputs a PLL oscillation signal.

The channel selection switch 240 of the FM wireless transmission module 200 is any one of a plurality of preset channel frequencies for transmitting the MP3 audio sound source during or before use according to a user's operation. Select the channel frequency.

The display unit 250 of the FM wireless transmission module 200 displays a channel state according to the channel selection switch 240.

Then, the control unit 270 of the FM wireless transmission module 200 is operated according to the PLL oscillation signal output from the PLL oscillation unit 220 to operate the first filter unit 220. The MP3 (MP3) audio sound source filtered and outputted is converted into a channel frequency selected by the channel selection switch 240 and output.

Accordingly, the RF amplifying unit 280 of the FM wireless transmission module 200 amplifies the RF of the other party's voice output from the controller 260.

Then, the second filter unit 290 of the FM wireless transmission module 200 filters the MP3 audio sound source amplified by the RF amplifier with a predetermined bandwidth and then wirelessly transmits the antenna through an antenna. do. The constant bandwidth is 87 to 90 MHz in one embodiment.

Subsequently, the audio device 300 is a car or FM audio system, and receives and transmits an MP3 (MP3) audio source wirelessly transmitted from the FM wireless transmission module 200. Allows the user to listen to MP3 audio sources.

In addition, the FM wireless communication module 200 and the MP3 player, navigation, or any one of the sound source device 400 of the CD (CD) connected to the air technology using a common audio connector After that, the MP3 (MP3) audio source played by the sound source device 400 is output to the FM wireless communication module 200 and the user listens to the audio device 300 through the above process. You can do it.

As described above, the FM wireless transmission device according to the present invention can listen to a call sound transmitted through a mobile phone connector by performing a hands-free function through an audio device, and the MP3 (MP3) audio source stored in the mobile phone can be heard. MP3 (MP3) audio source to be reproduced at the time of reproduction by the FM (FM) radio transmission has the effect that you can listen to the audio device.

From the above description, those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be determined by the scope of utility model registration claims and their equivalents.

Claims (5)

A mobile phone having a connector for inputting / outputting signals for a hands-free function and a power charging / discharging function, and for storing and reproducing a call sound transmission or reception of an MP3 (MP3) audio source; A connector having a connector connected directly to the mobile phone connector, amplifying the call sound or MP3 (MP3) audio source output through the connector to any one of a plurality of channel frequencies and then band-filtered and wirelessly transmitted to the FM ( FM) wireless transmission module; And an audio device for performing a hands-free function by receiving a call sound or an MP3 (MP3) audio source transmitted wirelessly from the FM radio transmission module. The method of claim 1, The FM wireless transmission module A PLL oscillation unit for outputting a PLL oscillation signal; A microphone for receiving a call sound of the mobile phone user and outputting the call sound to the mobile phone; A channel selection switch for selecting any one of a plurality of preset channel frequencies for transmitting the call tone or MP3 audio source; A display unit which displays a channel state according to the channel selection switch; A first filter unit for filtering a call tone or an MP3 (MP3) audio source output from the mobile phone connector; A PLL (PLL) oscillation signal output from the PLL oscillator is operated according to the PLL oscillation signal and the first filter unit to the call or MP3 (MP3) audio source is converted to the channel frequency selected by the channel selection switch A control unit for outputting; An RF amplifying unit for RF amplifying the call sound or MP3 audio source output from the control unit; FM radio transmitting device characterized in that it comprises a second filter unit for wirelessly transmitting through the antenna after filtering the call sound or MP3 (MP3) audio source amplified by the RF (RF) amplification unit . The method of claim 1, The FM wireless communication device is connected to the FM wireless communication module by an audio jack, characterized in that it further comprises a sound source device other than a mobile phone. The method of claim 3, The sound source device is any one of the MP3 (MP3) player, navigation, or CD (FM), characterized in that using the FM radio transmission device. The method of claim 1, The cellular phone connector is an FM (FM) wireless transmission device, characterized in that using any one of the 10-pin, 12-pin or 24-pin connector.

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