KR101082260B1 - A character display method of mobile digital device - Google Patents

Abstract

The present invention relates to a character display method of a portable digital device that performs character display control during MP3 file playback. The present invention is characterized in that character equalizer display is performed during MP3 file playback using a character desired by a user. To this end, the first embodiment of the present invention sets equal characters for each detectable audio level value, and then performs equalizer display while displaying the set character based on the audio level value detected upon playback of the MP3 file. The second embodiment of the present invention is characterized in that a character equalizer display is stored in an MP3 file together, and an equalizer display is performed by using a character included in the MP3 file when an arbitrary MP3 file is played. do. Accordingly, the present invention can provide high quality music at the time of MP3 file playback and obtain a visual effect according to the display of the character equalizer.

MP3 Player, character, equalizer,

Description

A character display method of mobile digital device             

1 is a control block diagram of a portable digital device according to the present invention;

2 and 3 are flowcharts of a character equalizer display control according to a first embodiment of the present invention;

4 and 5 are flowcharts of character equalizer display control according to the second embodiment of the present invention;

Explanation of symbols on the main parts of the drawings

140: microcontroller 125: memory

150: MP3 codec 120: display unit

115: audio level meter

The present invention relates to a portable digital device, and more particularly, to a character display method of a portable digital device for performing a character display control during MP3 file playback.

One of the most popular portable digital devices in recent years is the MP3 player. The MP3 Player is one of the audio parts of the Moving Picture Expert Group (MPEG) technology. The MP3 player has a relatively small size compared to a cassette tape insert-type small audio device or a CD player, and has a small power consumption since it does not drive a motor. Therefore, MP3 Player can be extended for a long time because of its advantage that it can be played for a long time, small size, and easy to carry.

However, conventional MP3 players do not have a graphic equalizer display function. Therefore, MP3 Player can listen to high-quality audio, but it is far less visual than conventional audio products with graphic equalizer display.

Accordingly, an object of the present invention is to provide a character display method of a portable digital device that can give a visual effect to a user when listening to music in an MP3 player.

According to another aspect of the present invention, there is provided a character display method of a portable digital device, comprising: a character selecting step of selecting a character for performing character equalizer display when a music file is played; A setting step of matching the selected character with a preset audio level value; A detection step of detecting an audio level value from the reproduced music file; And a display step of displaying a character set according to the detected audio level value.

The present invention is characterized in that the character selection step selects a main character, and the setting step selects a slave character subordinate to the main character.

In addition, the character display method of the portable digital device according to the present invention comprises: a character selecting step of selecting a character for performing character equalizer display when playing a music file; A setting step of partially classifying lyrics of a music file to match the selected character; A storing step of generating and storing a character matched with the lyrics into a music file and one file; Reading character information to be displayed in a music file to be played; And a display step of displaying a character set by matching the lyrics of the music file to be reproduced.

Hereinafter, a character display method of a portable digital device according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a control block diagram of a character equalizer display in a portable digital device according to the present invention.

As shown in the figure, the MP3 Player downloads a music file or the like from an information factory such as a computer. At this time, the interface unit 100 for transmitting and receiving data between the computer and MP3 player is included. The interface unit 100, the interface using a USB connector is used a lot.

The general MP3 player includes a memory 125 that stores downloaded data or an MP3 file processed by the MP3 signal by the MP3 codec 150. The memory 125 uses a nonvolatile memory that retains data even when power is cut off.

The MP3 codec 150 is a device that performs signal processing of an MP3 file used in an MP3 player. The MP3 codec 150 reproduces and outputs an MP3 file stored in the memory 125 or performs signal processing for converting a voice signal input through the microphone 190 into an MP3 file. In addition, the radio signal input through the radio tuner 135 is converted into an MP3 file to perform a signal processing to be reproduced.

The radio tuner 135 is a device for receiving a radio signal of a frequency specified by a user through an antenna, and the microphone 190 is a device for inputting a voice signal. The voice signal input from the microphone 190 is converted into a digital signal by an analog / digital converter (hereinafter referred to as an 'A / D converter') 170 and then applied to the MP3 codec 150. The signal processed and reproduced by the MP3 codec 150 is converted into an analog signal by a digital / analog converter (hereinafter referred to as a 'D / A converter') 160 and then output through a speaker 195. Lose.

In addition, MP3 Player includes a microcontroller 140 for controlling the overall operation of MP3 Player, such as music file download and MP3 file playback, a display unit 120 for displaying a menu, current progress mode, operation status, and menu input. And a key input unit 110 for inputting a signal and the like, and a power supply unit 130 for supplying power to the microcontroller 140.

The display unit 120 performs equalizer display by using a character selected by a user when playing an MP3 file. The key input unit 110 is configured to input a character selection signal, an equalizer display signal, and the like.

In addition, the present invention includes an audio level meter 115 for measuring the level value of the audio signal output through the D / A converter 160 to perform an equalizer display using the character. The audio level value measured by the audio level meter 115 is input to the microcontroller 140. The audio level value may be an audio level value or a volume value detected for each frequency band.

In addition, the memory 125 of the present invention stores various types of characters so that various equalizer displays can be performed. At this time, each character stored in the memory 125 is configured so that the equalizer display can change based on the audio level. For example, it comprises a plurality of varying species characters for each main character of various forms, such as human character, dog character, flower character. Accordingly, the human character may include a bell character such as a sitting shape, a running shape, and a cheering shape. The flower character may include a bell character such as a peak shape, a shape that gradually changes from a peak to a full bloom.                     

The MP3 player having the above configuration is operated as follows.

First, when receiving a radio signal through the radio tuner 135, the operation is controlled in the following process.

The radio frequency to be received through the key input unit 110 is set, and the microcontroller 140 adjusts the frequency of the radio tuner 135 to be tuned to the set radio frequency.

Thereafter, the radio signal input through the radio tuner 135 is converted into an MP3 file by the MP3 codec 150 under the control of the microcontroller 140. Under the control of the microcontroller 140, the memory 125 is stored in the memory 125 or converted into an analog signal by the D / A converter 160 and then output through the speaker 195.

Next, the recording operation of the voice signal input through the microphone 190 is performed as follows.

The voice signal input through the microphone 190 is converted into a digital signal by the A / D converter 170 and input to the MP3 codec 150. The MP3 codec 150 converts the input voice signal into an MP3 file, and is then stored in the memory 125 under the control of the microcontroller 140.

The MP3 file of the voice signal stored in the memory 125 is reproduced through the following process.

Under the control of the microcontroller 140, the MP3 file of the voice signal selected by the user is read, and the read MP3 file is input to the MP3 codec 150 again. After the decoding operation for reproduction is performed, the D / A converter 160 converts the analog signal and outputs the analog signal through the speaker 195.

The process of downloading the MP3 music file from the external device through the interface unit 100 is performed as follows.

The microcontroller 150 downloads the MP3 music file from the external device through the interface unit 100. The downloaded music file is stored in the memory 125 through the MP3 codec 150.

In addition, the process of playing the downloaded music file is the same as the process of playing the MP3 file described above.

As described above, the MP3 player of the present invention separately processes a radio signal, a download signal from an external device, a voice signal, etc., and stores the MP3 signal in a memory. The MP3 file stored in the memory is read, and then output through the speaker after decoding for playback in the MP3 codec.

Next, a process of controlling the display of a character equalizer according to an audio level in the portable digital device according to the present invention having the above configuration will be described.

2 is a flowchart illustrating an operation of displaying a character equalizer according to an audio level in a portable digital device according to a first embodiment of the present invention.

If the user selects the audio menu through the key input unit 110 in the standby state (Step 300), the microcontroller 140 reads the audio menu data stored in the memory 125 and displays the data on the display unit 120. In operation 310, the display is made.

In operation 310, a character equalizer mode is selected from the audio menus displayed on the display unit 120 (operation 320). If the character equalizer mode is not selected in step 320, audio reproduction by a general MP3 playback mode is controlled (step 380).

When the character equalizer mode is selected in step 320, the microcontroller 140 reads and displays various main characters stored in the memory 125 for character setting on the display unit 120. Then, the desired main character is selected (step 330 and step 340). In operation 340, the character to be displayed in the equalizer mode in the character equalizer mode is set.

Next, the microcontroller 140 performs a process of setting the character display state according to the audio level value. To this end, the microcontroller 140 reads the detectable audio level value (step 350), and reads the slave character according to the main character selected in the step 340 again. The slave character is selected according to each audio level value (360).

In step 350, it is preferable to preset the audio level value in a predetermined range in order to prevent the audio value from becoming too wide. Therefore, when the audio level value is set to 0 to 10, the process of selecting the servant character according to each audio level value is the 360 step.

When the above process is performed, the character to be displayed by the user and the character shape according to the audio level value are determined.

Thereafter, when the user selects the audio reproduction mode (step 370), the character shape according to the selected audio level value is displayed on the display unit 120 based on the detected audio level value.

That is, as shown in FIG. 3, when the MP3 file is in the playback mode (step 500), the microcontroller 140 controls the MP3 codec 150 to control the signal processing of the MP3 file selected by the user. . The audio signal processed by the MP3 codec 150 is converted into an analog signal by the D / A converter 160 and output through the speaker 195.

When the operation is performed, the audio level measuring unit 115 measures the frequency band level of the audio signal converted into the analog signal by the D / A converter 160 and applies the same to the microcontroller 140 (operation 510). step).

The microcontroller 140 displays a character shape set according to each level value based on the audio level input in step 510. That is, the character equalizer display is controlled. The character equalizer display is performed in the display unit 120 (step 520).

As described above, the first embodiment of the present invention is characterized in that a character equalizer is displayed at the time of playing an MPP file using a character desired by a user. To this end, the first embodiment of the present invention sets equal characters for each detectable audio level value, and then performs equalizer display while displaying the set character based on the audio level value detected upon playback of the MP3 file.

Next, FIG. 4 and FIG. 5 are operational flowcharts in which character equalizer display control is performed according to the second embodiment of the present invention.

A second embodiment of the present invention is characterized in that a specific character equalizer display is set in a specific MP3 file. Therefore, it is possible for the user to set the character equalizer display differently for every MP3 file.

Therefore, the present invention requires a process of generating an MP3 file including a character equalizer. 4 is a flowchart illustrating an operation of generating an MP3 file including a character equalizer according to the present invention. The MP3 file generation is performed in a program that enables MP3 file editing.

First, an administrator program capable of editing an MP3 file is executed (step 400). The manager program is stored in the memory 125, read and executed by the microcontroller 140, and displayed on the display unit 120.

The MP3 file to be edited is read in the manager program (step 410). In step 410, the lyrics part of the MP3 file is also read. Therefore, the MP3 file is a file in which song lyrics matched with music to be reproduced are stored together.

Next, the character stored in the memory 125 is read, and a desired character is selected from among them (step 420). The character is selected together with the main character (person) and the slave character that is dependent on the main character.                     

Next, matching of the selected character in accordance with the MP3 file lyrics is started. For example, if the selected MP3 file lyrics are composed of "Kanadara Mavasa Achakataha", the species character matching "Kanadara" is selected, and the species character matching "Mabasa" is selected. The species character to be matched with "Achakataha" is sequentially selected. The species characters thus selected have an equalizer display state while the corresponding lyrics are played as shown below.

"Kanada" ............. Sitting a person character

"Mabasa" ............... People who stand up

"Achakataha" ........... The running character

As described above, when the lyrics of the corresponding part are played from the beginning to the end of the MP3 file lyrics, the selection of the character to be displayed is made (step 430), and the microcontroller 140 performs music data, music lyrics, and lyrics. Each character and the like are matched with each other, and are generated and stored as one MP3 file (step 440). In a general MP3 player, a corresponding musician is displayed by matching music data. In the present invention, it is configured to display a character corresponding to the musician.

The process of FIG. 4 may be performed using a separate device such as a computer that runs an administrator program capable of editing MP3 files.

The following describes a process of playing an MP3 file in which a character is stored together as described above.                     

5 is an operation flowchart of reproducing an MP3 file in which a character is stored together.

When the user selects a menu in the standby state, the microcontroller 140 reads menu data stored in the memory 125 and displays the menu data on the display unit 120. The user selects the MP3 file for playback through the key input unit 110 (step 200), and selects the MP3 file playback (step 210). In step 200, when selecting an MP3 file, a character equalizer display mode is selected if character display is desired.

The microcontroller 140 checks whether the user has selected the character equalizer display mode in order to control playback of the selected MP3 file (step 220). If the character equalizer mode is not selected in step 220, audio reproduction by the general MP3 playback mode is controlled (step 250).

If the character equalizer display mode is selected in step 220, the microcontroller 140 reads character information included in the selected MP3 file (step 230).

Thereafter, when the selected MP3 file is played, the equalizer display by the selected character is performed together (step 240). That is, when the MP3 file is played, when the "Kanadara" lyrics are played, the "sitting person" character is displayed, and when the "Mavasa" lyrics are played, the "person standing up" character is displayed. When the "Achakataha" lyrics part is played back, the "person running" character is displayed. Therefore, the microcontroller 140 recognizes the character to be displayed every part of the MP3 file to be reproduced through the MP3 codec 150 and controls the display to be displayed on the display unit 120.

As described above, in the second embodiment of the present invention, a character equalizer display is stored in an MP3 file together, and an equalizer display is performed by using a character included in the MP3 file at the time of playing an MP3 file. It is characterized by. Therefore, according to the second embodiment of the present invention, it is possible to control to display various character equalizers having different forms for each MP3 file.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

The character display method of the portable digital device according to the present invention described above can obtain the following effects.

First, the present invention can provide high quality music at the time of MP3 file playback and at the same time obtain a visual effect according to the character equalizer display.

Second, the present invention is equipped with a variety of characters, so that the character equalizer display desired when the music is played, it is possible to obtain the effect of increasing the performance satisfaction for the product.

Third, according to the present invention, a different type of character equalizer display is performed for each music file, thereby enhancing visual effects by displaying various types of character equalizers while listening to high quality music.

Claims (3)

A character selecting step of selecting a main character for performing character equalizer display at the time of playing a music file; A setting step of selecting a slave character dependent on the main character corresponding to the audio level value within a range of a preset audio level; A detection step of detecting an audio level value from the reproduced music file; And a display step of displaying a character set according to the detected audio level value. delete A character selecting step of selecting a main character and a servant character for performing character equalizer display at the time of playing a music file; A setting step of partially classifying lyrics of a music file and matching the selected main character with a servant character; A storage step of integrating and storing the character matching the lyrics with a music file; Reading character information to be displayed in a music file to be played; And displaying a character set by matching the lyrics of the music file to be reproduced.

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