KR100601572B1 - System for supporting high fidelity sound of handset - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a high performance acoustic support system of a portable terminal.

2. The technical problem to be solved by the invention

It is an object of the present invention to provide a high performance acoustic support system of a portable terminal capable of listening to music of the same volume and quality as general audio without being limited by various conditions such as the size and battery life of the portable terminal.

3. Summary of Solution to Invention

According to an aspect of the present invention, there is provided a portable terminal supporting high-performance sound, comprising: a main processor configured to generate voice data; A power supply unit applying a DC voltage using a charging power source; And modulating the voice data received from the main processor into an FM signal, generating an audio output signal by the modulated FM signal and a DC voltage applied from the power supply unit, and outputting the audio output signal to an external side through a charging terminal. An audio signal processor.

4. Important uses of the invention

The present invention is used in a portable terminal.

FM modulation, terminal, charging terminal, charger

Description

High performance sound support system of portable terminal {SYSTEM FOR SUPPORTING HIGH FIDELITY SOUND OF HANDSET}             

1 is a block diagram showing a conventional portable terminal,

2 is a block diagram illustrating a portable terminal in a high performance acoustic support system of the portable terminal according to an embodiment of the present invention;

3 is a block diagram illustrating an audio signal processor of FIG. 2;

4 is a circuit diagram showing the mixer of FIG.

5 is a block diagram illustrating a charger in a high performance acoustic support system of a portable terminal according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

210: RF transceiver 220: key input unit

230: main processor 240: memory

250: display unit 260: CODEC

270: power supply unit 280: audio signal processing unit

The present invention relates to a high performance acoustic support system of a portable terminal, and more particularly, to a high performance acoustic support system of a portable terminal for outputting an FM modulated sound source to an external system through a battery terminal.

1 is a block diagram illustrating a conventional portable terminal, which will be described below.

The RF transceiver 110 receives an RF received signal from a base station and processes the RF signal to generate received data, outputs the received data to the main processor 130, receives the processed data from the main processor 130, and processes the received RF. It generates a transmission signal and outputs an RF transmission signal through an antenna. In addition, the key input unit 120 generates a key input signal according to a user's selection, and outputs the key input signal to the main processor 130. On the other hand, the main processor 130 receives the received data from the RF transceiver 110, generates image data, audio data, etc. by the received data, outputs the image data to the display unit 150, and outputs the audio data. It outputs to CODEC 160 and processes voice data input from CODEC 160. In addition, the memory 140 stores data input from the main processor 130 and provides the stored data to the main processor 130 under the control of the main processor 130. Meanwhile, the display unit 150 receives image data from the main processor 130 and displays the image data that can be recognized by the user. In addition, the codec 160 receives and processes voice data from the main processor 130 to generate a voice signal, outputs the voice signal through a speaker, and processes the voice signal input through a microphone to generate voice data. And outputs voice data to the main processor 130.

However, according to the conventional technology described above, the volume of the volume is not only limited in the audio output method through the speaker due to the size and various conditions of the portable terminal itself, there is a problem that the sound quality is inferior.

The present invention has been proposed to solve the above problems, and supports high performance sound of a portable terminal capable of listening to music of the same volume and sound quality as general audio without being restricted by various conditions such as the size and battery life of the portable terminal. The purpose is to provide a system.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

An apparatus of the present invention for achieving the above object, the portable terminal supporting high-performance sound, the main processor for generating voice data; A power supply unit applying a DC voltage using a charging power source; And modulating the voice data received from the main processor into an FM signal, generating an audio output signal by the modulated FM signal and a DC voltage applied from the power supply unit, and outputting the audio output signal to an external side through a charging terminal. An audio signal processor.

In addition, the apparatus of the present invention for achieving the above object, the charger connected to the portable terminal to support high performance sound, the charging unit for generating a charging voltage by an external power source, and applying the charging voltage to the portable terminal; An FM demodulator for demodulating an FM signal which is audio output data received through a charging terminal of the portable terminal; An audio amplifier for amplifying the signal input from the FM demodulator and outputting the signal as sound; And an FM signal blocking unit for blocking transmission of the audio output signal received from the portable terminal to the charging unit.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a block diagram showing a portable terminal of a high performance sound support system of a portable terminal according to an embodiment of the present invention, the high performance sound support system of the portable terminal of the present invention, the RF transceiver 210, the key input unit ( 220, a main processor 230, a memory 240, a display 250, a CODEC 260, a power supply 270, and an audio signal processor 280.

The RF transceiver 210 receives an RF received signal from a base station and processes the RF signal to generate received data, outputs the received data to the main processor 230, receives the processed data from the main processor 230, and processes the received RF. It generates a transmission signal and outputs an RF transmission signal through an antenna.

In addition, the key input unit 220 generates a key input signal according to a user's selection, and outputs the key input signal to the main processor 230.

On the other hand, the main processor 230 receives the received data from the RF transceiver 210, generates image data, audio data, etc. by the received data, and outputs the image data to the display unit 250, the audio data It outputs to the CODEC 260, and serves to process the voice data input from the CODEC (260).

In addition, the memory 240 stores data input from the main processor 230 and provides the stored data to the main processor 230 under the control of the main processor 230.

Meanwhile, the display unit 250 receives image data from the main processor 230 and displays the image data that can be recognized by the user.

In addition, the CODEC 260 receives voice data from the main processor 230, processes the voice data, generates a voice signal, outputs the voice signal through a speaker, and processes the voice signal input through a microphone to generate voice data. It generates and outputs the voice data to the main processor 230.

On the other hand, the power supply unit 270 serves to apply a DC voltage to the audio signal processing unit 280 using the pre-charged charging power.

In addition, the audio signal processor 280 modulates the voice data input from the main processor 230 into an FM signal, and generates an audio output signal based on the modulated FM signal and the DC voltage applied from the power supply unit 270. And outputs the audio output signal to a charger (not shown) through a charging terminal.

3 is a block diagram illustrating the audio signal processor 280 of FIG. 2.

The FM modulator 310 mounted in the audio signal processor 280 modulates the voice data received from the main processor 230 into an FM signal and outputs the modulated signal to the mixer 330. .

In addition, the booster converter 320 mounted in the audio signal processor 280 compensates for the DC voltage applied from the power supply unit 270 and outputs the DC voltage to the mixer 330. In other words, when the DC voltage applied from the power supply unit 270 drops, the booster converter 320 compensates for the output of the booster converter 320.

On the other hand, the mixer 330 mounted in the audio signal processor 280 mixes the DC voltage applied from the booster converter 320 and the AC voltage of the FM signal received from the FM modulator 310. It generates an audio output signal, and outputs the generated audio output signal to a charger (not shown).

In addition, the FM signal blocking unit 340 mounted in the audio signal processing unit 280 serves to block transmission of the audio output signal output from the mixer 330 to the power supply unit 270. Here, the FM signal blocking unit 340 may be an LC filter, but is not limited thereto.

4 is a circuit diagram illustrating the mixer 330 of FIG. 3, which will be described below.

In the capacitor 410 mounted in the mixer 330, a first terminal is connected to an output terminal of the FM modulator 310, and the bias unit may be configured to erase DC components in the FM signal received from the FM modulator 310. 420).

In addition, the plurality of resistors R1 and R2 mounted in the mixer 330 may have a bias voltage set by a DC voltage and a resistance value applied to the signal input from the capacitor 410 from the booster converter 320. By biasing according to the output to the transistor 430.

Meanwhile, the transistor 430 mounted in the mixer 330 receives an output signal of the bias unit 420 through a gate terminal, receives a DC voltage from the booster converter through a collector terminal, and emitter terminal It serves to form an output terminal of the audio output signal.

5 is a block diagram illustrating a charger in a high performance acoustic support system of a portable terminal according to an embodiment of the present invention.

The charging unit 510 generates a charging voltage by an external power source and applies the charging voltage to the portable terminal (not shown).

In addition, the FM demodulator 520 demodulates the FM signal, which is the audio output data input through the charging terminal of the portable terminal, and outputs the demodulated signal to the audio amplifier 530.

Meanwhile, the audio amplifier 530 amplifies the signal input from the FM demodulator 520 and outputs the sound as a sound that can be heard by the charger user. Here, the audio amplifier 530 may operate by receiving power from the charging unit 510.

In addition, the FM signal blocking unit 540 serves to block transmission of the audio output signal received from the portable terminal to the charging unit 510. Here, the FM signal blocking unit 540 may be an LC filter, but is not limited thereto.

The operation of the high performance acoustic support system of the portable terminal of the present invention described above is as follows.

First, the FM modulator 310 modulates the voice data received from the main processor 230 into an FM signal and outputs the modulated signal to the mixer 330.

Thereafter, the transistor 430 mounted in the mixer 330 receives an output signal of the bias unit 420 reflecting the FM signal to the gate terminal, receives a DC voltage from the booster converter, and collects The audio output signal generated by the DC voltage is output through the charging terminal according to the switching operation of the FM signal to the terminal.

Thereafter, the FM demodulator 520 demodulates the FM signal, which is the audio output data input through the charging terminal of the portable terminal, and outputs the demodulated signal to the audio amplifier 530.

Thereafter, the audio amplifier 530 amplifies the signal input from the FM demodulator 520 and outputs the sound as a sound that can be heard by the charger user, so that the user can listen to high-quality music.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The present invention as described above, there is an advantage that can listen to the music of the same volume and sound quality as the general audio without restrictions by various conditions such as its own size and battery life of the portable terminal.

Claims (4)

In a portable terminal supporting high performance sound, A main processor for generating voice data; A power supply unit applying a DC voltage using a charging power source; And Modulating the voice data input from the main processor into an FM signal, generating an audio output signal based on the modulated FM signal and a DC voltage applied from the power supply unit, and outputting the audio output signal to the outside through a charging terminal; Signal processor As a high performance sound support system of a portable terminal comprising a, The audio signal processor, An FM modulator for modulating voice data received from the main processor into an FM signal; A booster converter for compensating and outputting the DC voltage applied from the power supply unit; A mixer configured to generate an audio output signal by mixing the DC voltage applied from the booster converter and the AC voltage of the FM signal received from the FM modulator; And FM signal blocking unit for blocking the transmission of the audio output signal output from the mixer to the power supply unit High performance sound support system of a portable terminal comprising a. delete The method of claim 1, wherein the mixer, A DC blocker for canceling and outputting a DC component in the FM signal received from the FM modulator; And A bias unit for biasing and outputting the signal input from the DC blocking unit; And A transistor which receives an output signal of the bias unit through a gate terminal, receives a DC voltage from the booster converter through a collector terminal, and an emitter terminal forms an output terminal of the audio output signal. High performance sound support system of a portable terminal comprising a. In the charger connected to the portable terminal to support high performance sound, A charging unit generating a charging voltage by an external power source and applying the charging voltage to the portable terminal; An FM demodulator for demodulating an FM signal which is audio output data received through a charging terminal of the portable terminal; An audio amplifier for amplifying the signal input from the FM demodulator and outputting the signal as sound; And FM signal blocking unit for blocking the transmission of the audio output signal received from the portable terminal to the charging unit High performance sound support system of a portable terminal comprising a.

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