KR20060023412A - Speaker volume display apparatus and method for portable terminal device - Google Patents

Abstract

The present invention relates to a speaker volume display device and method of a mobile terminal, and more particularly, to detect a sound pressure when playing an MP3 music file and to flash or light an LED based on the same, thereby reducing the current consumption of the battery, as well as allowing the user to The purpose is to make the music play visually. The present invention for this purpose is a memory 310 for storing the music files downloaded from the outside, a display unit 330 for displaying the output size of the playback music in the form of MP3 music file list and spectrum, and receives the digital MP3 data A portable terminal having a MIDI processing unit 320 for storing a music file selected by a user and playing a music file selected by a user and outputting the same to a speaker SP, wherein the output size of the reproduced music is detected by a speaker sound pressure. The sound pressure detection unit 360, the LED unit 350 flashing and emitting light according to the output size of the playback music, and the MIDI processing unit 220 are notified of the reproduction of the music file selected by the user, and the output size of the playback music is the sound pressure. Received from the detection unit 360, characterized in that it comprises a control unit 340 for blinking the LED unit 350.

Description

SPEAKER VOLUME DISPLAY APPARATUS AND METHOD FOR PORTABLE TERMINAL DEVICE}

1 is a block diagram of a conventional audio reproducing apparatus.

2 is a view showing an output size display method of playback music in FIG.

Figure 3 is a block diagram of a speaker volume display device according to an embodiment of the present invention.

4 is a configuration diagram of a sound pressure detection unit in FIG. 3;

Explanation of symbols on the main parts of the drawings

310: memory 320: MIDI processing unit

330 display unit 340 control unit

350: LED unit 360: sound pressure detection unit

The present invention relates to a portable terminal, and more particularly, to a method and apparatus for displaying a speaker volume in a portable terminal having a combined MP3 function.

With the recent popularization of mobile communication terminals, various services have been provided to improve user convenience and meet expectations, and are equipped with functions for providing various services in mobile communication terminals.

For example, a mobile communication terminal (hereinafter referred to as a "mobile phone") equipped with an MP3 function plays MP3 music files downloaded using a wired or wireless network so that a user can listen.

1 is a block diagram of a conventional audio reproducing apparatus, as shown in FIG. MIDI processing unit 120 for receiving the digital MP3 data received in the display unit 130, stored in the memory 110, and reproduces the music file selected by the user to the speaker (SP), and externally downloaded audio It transmits to the MIDI processing unit 120 to store data, recognizes the user's MP3 playback mode setting, and displays a list of music files stored in the memory 110 on the display unit 130 to play the music file selected by the user. It comprises a control unit 140 to inform the MIDI processing unit 120.

The display unit 130 is an LCD.

The configuration of the prior art is shown by omitting the communication portion, the operation process for this is as follows.

First, the MP3 music file downloaded by the user from the outside (computer, Internet, etc.) is stored in the memory 110 by the controller 140.

Thereafter, when the user sets the MP3 music file list display after setting the MP3 play mode, the controller 140 reads the list data of the music files stored in the memory 110 and displays the list data on the display unit 130.

In this case, when the user selects a random music file, the controller 140 notifies the MIDI processor 120 of this.

Accordingly, the MIDI processor 120 reproduces the corresponding music file and outputs the same to the speaker SP, and the controller 140 receives the output size of the currently played music from the MIDI processor 120 and displays it in the form of spectrum. It is displayed at 130.

That is, conventionally, the frequency component of the music currently being played is analyzed and the output magnitude of the music is displayed in the form of spectrum as shown in the example of FIG.

However, conventionally, the MP3 music is output to the speaker and the output size of the currently playing MP3 music must be displayed in the form of spectrum on the LCD in the form of spectrum so that the LCD is always kept active. .

Therefore, in the related art, when the MP3 function is executed, current consumption of the battery is excessively generated, which causes the battery to be discharged, thereby reducing the use time.

In addition, conventionally, by simply displaying the output size of the reproduced music in the form of a spectrum on the LCD does not exhibit a sufficient visual effect has a disadvantage that does not satisfy the user satisfaction.

Accordingly, the present invention is to detect the sound pressure when playing an MP3 music file to improve the conventional problem, the volume of the speaker of the mobile terminal invented to reduce the current consumption of the battery by flashing or emitting the LED (LED) based on this Its purpose is to provide a display device and method.

In order to achieve the above object, the present invention provides a portable terminal equipped with an MP3 function, comprising: a sound pressure detector for detecting a sound pressure of currently played music, and a controller for blinking an LED according to the sound pressure detected by the sound pressure detector. Characterized in that comprises a configuration.

The sound pressure detector is a sound pressure sensor.

The negative pressure sensor includes a parallel plate capacitor having a change in capacitance when the diaphragm of the two parallel plates is vibrated by sound pressure and the separation distance of the two parallel plates is changed, and a resistor for converting the changed capacitance into voltage. It is characterized by the configuration.

In addition, the present invention in the music playback method of the portable terminal equipped with the MP3 function to achieve the above object, the step of setting the output size display mode of the playback music, the step of playing the music file, the sound pressure sensor Detecting the output size of the music to be reproduced, and flashing or emitting an LED according to the output size of the reproduced music.

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

In the embodiments of the present invention, a detailed description of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

3 is a block diagram of a speaker volume display device according to an exemplary embodiment of the present invention. As shown in FIG. 3, a memory 310 for storing music files downloaded from the outside, and MP3 music file lists and playback music in the form of spectrum A display unit 330 for displaying an output size of the display unit, a MIDI processor 320 for receiving digital MP3 data, storing the same in a memory 310, and playing the music file selected by the user and outputting the music file to the speaker SP; The sound pressure detector 360 detects the output size of the playback music by the sound pressure of the speaker, the LED unit 350 flashes and emits light according to the output size of the playback music, and stores the audio data downloaded from the outside. The music file stored in the memory 310 is displayed on the display unit 330 by being transmitted to the MIDI processing unit 320 and recognizing a user's MP3 play mode setting. Informs the reproduction of the music file to the media processing unit 220 receives the output size of the reproduced music from the sound pressure detecting unit 360 is configured to include a controller 340 for flashing the LED 350.

The LED unit 350 is configured to include an LED (LED) indicating power on or incoming and LED (LED) for the backlight of the keypad.

In addition, the LED unit 350 may be configured by separately mounting the LED to be flashed according to the output size of the playback music.

As shown in FIG. 4, the negative pressure detecting unit 360 receives a bias voltage and has a parallel plate capacitor 400 whose capacitance varies according to the speaker sound pressure, and a voltage according to the capacitance of the parallel plate capacitor 400. It consists of a resistor (R) that detects and is mounted at a position close to the speaker (SP).

The parallel plate capacitor 400 is a capacitor manufactured to attract positive charges by electrons (-) of the parallel plate 420, and a material that is not energized between two parallel plates 410 and 420 is blocked. If present, or if the area of the two parallel plates is large, the capacitance increases, and as the distance between the two parallel plates increases, the electric force decreases and the capacitance decreases.

That is, the capacitance of the parallel plate capacitor 400 is inversely proportional to the distance between the two parallel plates 410 and 420 and is proportional to the area of the parallel plates 410 and 420. (Proportional constant: permittivity E ??)

Referring to the operation and effect of the embodiment of the present invention configured as described above are as follows.

First, the MP3 music file downloaded by the user from the outside (computer, Internet, etc.) is stored in the memory 310 by the controller 340.

Thereafter, when the user sets the MP3 music file list display after setting the MP3 play mode, the controller 340 reads list data of music files stored in the memory 310 and displays the list data on the display unit 330.

In this case, when the user selects a random music file, the controller 340 notifies the MIDI processor 320 of this.

Accordingly, the MIDI processing unit 320 plays the music file and outputs the music file to the speaker SP.

Therefore, the sound pressure detector 360 mounted at a position close to the speaker SP detects the speaker sound pressure.

At this time, the sound pressure detector 360 is a sound pressure sensor using the parallel plate condenser 400, the parallel plate condenser 400 at a very narrow interval with the movable electrode (vibration membrane) 410, which vibration displacement according to the speaker sound pressure Comprising a fixed electrode (pole) 420 is opposed to the displacement of the diaphragm 410 according to the speaker sound pressure, thereby changing the capacitance.

Accordingly, the charge according to the capacitance change is generated as the load voltage Vload by the load resistor R and transferred to the controller 340.

Therefore, the controller 340 converts the load voltage Vload transmitted from the sound pressure detector 360 into a digital signal to determine the size of the playback music output to the speaker SP, and determines the LED unit 350 according to the determination. Flashes and emits light.

That is, the present invention detects the load voltage by using the speaker sound pressure in the portable terminal capable of MP3 function and judges the output size of the reproduced music from the level of the detected voltage so that the LED unit 350 blinks and emits light so that the user plays the reproduced music. To make you feel visually.

In the above process, the MP3 music file is described as being stored in the memory 310 by the MIDI processor 320, but the controller 340 may be configured to directly store the MP3 music file.

In addition, in the above process, when the MP3 music file is played, the LED (LED) is flickered according to the output size of the music file. It can also be displayed in the form.

In addition, the LED unit 350 may be configured to separately mount a plurality of LEDs on the outside of the portable terminal to vary the number of flashes or the number of flashes, the number of flashes, or the order of flashes according to the output size of the music.

Alternatively, the LED unit 350 may be a backlight LED of the keypad and may allow the user to visually recognize the playback music by blinking or emitting the backlight LED according to the output size of the music file.

As described in detail above, the present invention uses the sound pressure sensor to detect the output size of the reproduced music and flashes or emits the LED according to the detection result, so that the output size of the reproduced music in the conventional LCD (LCD) in the form of spectrum. Compared to the display, the current consumption of the battery can be reduced to extend the battery life.

In addition, the present invention has an effect that can give a user a satisfaction by making the user visually feel the playback music by flashing or emitting the LED according to the output size of the playback music.

Claims (8)

In the portable terminal equipped with the MP3 function, Sound pressure detection means for detecting sound pressure of the music currently being played; And means for controlling the flashing or light emission of the LED means according to the sound pressure of the reproduced music detected by the sound pressure detecting means. According to claim 1, wherein the sound pressure detection means is a sound pressure sensor, A parallel plate condenser of which the diaphragm is vibrated by sound pressure and the capacitance of the two parallel plates changes when the distance between the two parallel plates changes. And a resistor for converting the changed capacitance into a load voltage. The method of claim 1 wherein the LED means Speaker volume display device of a mobile terminal, characterized in that a plurality of LEDs mounted separately on the outside of the mobile terminal. The speaker volume display device of claim 1, wherein the LED means is a backlight LED. In the music playback method of the portable terminal equipped with the MP3 function, Playing the music file, Detecting an output size of the playback music; And flashing or emitting an LED according to the output size of the reproduced music. The method of claim 5, further comprising the step of setting an output size display mode of the playback music. The method of claim 5, wherein the LED is a plurality of LEDs or LEDs for the backlight separately mounted to the outside of the terminal. The method of claim 5, wherein the output volume of the playback music is detected by speaker sound pressure.

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