KR20000050888A - Audio display apparatus of terminal in radio communication - Google Patents

Abstract

PURPOSE: An audio player of cellular phone is provided to store music files in the cellular phone, to supply the audio player to play/hear the stored music files, to select a requested music through a key pad, and to play the selected music with lyric data. CONSTITUTION: An audio player of cellular phone having a key pad and an audio/logic controller, comprises memories(105,200), a micro processor(106), a play key, a moving picture coding experts group(MPEC) audio decoder(201), a digital/analog converter(202), and a low frequency amplifier(203). The memories(105,200) stores music files. The play key is equipped on the keypad, and determines a play mode of the stored files. The micro processor(106) reads and outputs one of the files according to either select of the play key. The MPEC audio decoder(201) decodes audio data of the files from the micro processor(106). The D/A converter(202) converts the decoded audio data into an analog signal. The low frequency amplifier(203) amplifies and outputs the analog audio signal by a specific level.

Description

Audio display apparatus of mobile communication terminal

The present invention relates to audio reproduction of a mobile communication terminal. Specifically, an audio of a mobile communication terminal for reproducing and outputting selected songs and lyrics according to a user's operation by incorporating a karaoke system into a cellular wireless communication terminal. It relates to a playback device.

For example, when the mobile communication system sends a call message including the unique number of the called terminal through the call control channel of the base station to call the cellular wireless communication terminal, and then receives a response from the terminal. It is supposed to provide a channel.

However, according to the protocol of the cellular radio communication terminal specified in the call processing of the Electronics Industry Association, the cellular radio communication terminal may miss the call message transmitted by the base station in a special situation. It is supposed to fail to call.

Such a general mobile communication terminal has a built-in transmitter and a receiver, and a device that enables two-way communication at a long distance by using a radio signal on a line connecting a portable device and a fixed device of a general wireless telephone. Its purpose is to pursue the convenience and mobility of telephone calls.

However, in recent years, not only the purpose of a simple call but also a function such as a text service, a voice service, a communication service with a computer, and the like are required day by day. It is being built and commercialized.

Such a mobile communication terminal has a drawback of simply carrying it when there is no call with the other party or when there is no connection with a personal computer.

1 shows one such mobile communication terminal.

The mobile communication terminal is connected to a cellular wireless communication terminal by a land side (Land Side), the base station 113, called a cell site (Celicite) that modulates various data at high frequency and transmits it through the antenna ANT2, and the base station And a high frequency receiver 111 for filtering only the required bands from the high frequency signals received from the antenna ANT1 of the wireless communication terminal and amplifying the filtered weak high frequency signals to a sufficient size, and the amplified high frequency signals. Is mixed with the local oscillation frequency generated from the local oscillator 102, and the demodulation unit 110 extracts the intermediate frequency from the mixed frequency and demodulates the original signal, and the data and audio signals from the demodulated signal. Separates and outputs an audio signal to the speakerphone 109 and processes the electrical signal input through the microphone 108 into a voice signal. Audio / logical control unit 103, the received data obtained from the audio / logical control unit, and the unique number of the corresponding terminal stored in the first memory 105 are compared and analyzed according to the program execution of the program ROM 104. A microprocessor 106 for storing and displaying the data in the memory 105 and the liquid crystal display unit 107, and for determining a telephone number of the other party input from the keypad 112 and data to be transmitted to the base station 113; And a modulator 101 for modulating and outputting the data of the microprocessor 106 through the audio / logic controller 103, the dialing signal, and the voice signal of the microphone 108 to the oscillation frequency of the local oscillator 102, and The high frequency signal modulated by the modulator and amplified by the high frequency transmitter 100 for transmitting to the base station 113 through the antenna (ANT1).

When the mobile communication terminal according to the related art configured as described above first turns on the terminal for both sides of the call and inputs a telephone number through the keypad 112, the microprocessor 106 performs a program of the program ROM 104. According to the execution, the phone number is stored in the memory 105 and displayed on the liquid crystal display 107.

In this way, when the caller completes the dialing through the keypad 112 to call the other party, the microprocessor 106 reads the telephone number (the caller's call signal) from the memory 105 and sends the audio / logical control unit 103 to the caller. Provided to the modulator 101 through.

The modulator 101 modulates the call signal of the other party input from the microprocessor 106 to the oscillation frequency of the local oscillator 102 under the control of the audio / logic controller 103 and provides the signal to the high frequency transmitter 100.

The high frequency transmitting unit 100 amplifies the high frequency signal input from the modulator 101 and transmits the high frequency signal to the base station 113 through the antenna ANT1, and the base station 113 closest to the mobile communication terminal receives the received call. Send the signal to mobile communication switching center.

Therefore, the mobile communication exchange side transmits the ring signal between the two parties to call the other party, and when the other party receives the call, the transmission of the ring signal is stopped and the communication path is formed.

When the communication path is formed and the voice signal and data from the other party are loaded on the high frequency and received through the corresponding base station 113 and through the antenna ANT1 of the mobile communication terminal, the high frequency receiver 111 is required for the received high frequency signal. Only the bay is extracted and amplified to a sufficient size and provided to the demodulator 110.

The demodulator 110 extracts the intermediate frequency signal by mixing the input high frequency signal with the oscillation frequency of the local oscillator 102 and demodulates it into an original signal and provides it to the audio / logical controller 103.

The audio / logical controller 103 separates the voice signal and the data from the signal input from the demodulator 110, and outputs the voice signal through the speakerphone 109 and the data, that is, the service text data through the microprocessor 106. It is displayed on the liquid crystal display 107.

On the other hand, during transmission, as a reverse process of the reception, the voice signal input from the microphone 108 is modulated to the high frequency signal through the audio / logical control unit 103 and the modulator 101 and then through the high frequency transmitter 100. The power is amplified and sent to the nearest base station 113 to make a call between the two parties.

In the communication between the mobile communication terminal and the personal computer, a cable may be connected to each set of connectors not shown in the drawings to transmit data received from the mobile communication terminal to the personal computer. Can be transmitted.

The mobile communication terminal according to the related art described above can form a communication path between two parties through a keypad to perform voice call, text service, voice service, and the like, and can also connect with a personal computer to communicate data with the other party. Able to know.

However, such a mobile communication terminal can communicate with the other party by embedding a text service, a voice service function, and a communication function with a computer. However, when there is no two-way call, that is, there is no telephone call from the other party or a call to the other party. If there is no purpose to do or there is no connection with a personal computer at this time there is an inexpensive problem of not simply utilizing the functions, but simply carry around.

Therefore, it is desirable to provide a terminal which can heal the above problems while providing a low cost terminal in terms of cost, and a function which is expanded in terms of reliability and can be used for other purposes in general.

Accordingly, an object of the present invention is to provide an audio reproducing apparatus of a mobile communication terminal which stores a music file in a mobile communication terminal so as to play and listen to a normally stored music file. It is characterized by a simple structure.

Another object of the present invention is to provide an audio reproducing apparatus of a mobile communication terminal for selecting and outputting a favorite song and playing it together with lyrics data through a keypad of the mobile communication terminal. And storing the music file and the lyrics data in the audio MPEG process.

1 is a block diagram provided to explain a general mobile communication terminal,

2 is a block diagram illustrating an exemplary embodiment provided in an audio reproducing apparatus of a mobile communication terminal according to the present invention.

<Description of the code | symbol about the principal part of drawing>

100: high frequency transmission unit 101: modulator

102: local oscillation unit 103: audio / logic control unit

106: microprocessor 107: liquid crystal display

108: microphone 109: speakerphone

200: second memory 201: MPEG audio decoder

202: digital / analog converter 203: low frequency amplifier

An audio reproducing apparatus of a mobile communication terminal according to an aspect of the present invention for achieving the above object is a microprocessor for inputting key data for dialing and transmitting / receiving, and a voice signal obtained from the data and the microphone of the keypad. A mobile communication terminal comprising audio / logical control means for transmitting to a base station by transmitting and receiving control and receiving and separating data therefrom:

The mobile communication terminal,

(1) a memory that stores a plurality of music files;

(2) a music play key provided in the keypad to determine a play mode of the music file stored in the memory;

(3) a microprocessor which reads and outputs any one music file among music files stored in the memory according to whether the music play key is selected;

(4) MPEG audio decoder means for decoding the audio data of the music file obtained by said microprocessor;

(5) digital / analog conversion means for converting the decoded audio data into an analog signal; And

(6) low frequency amplifying means for amplifying and outputting the analog audio signal to a predetermined level.

Optionally, the apparatus further comprises means for storing lyrics data of a song of the music file in the memory to display the lyrics data of the song on the LCD screen when the music play key is selected.

Optionally, the keypad is provided with an up / down key for selecting any one of a plurality of music files stored in the memory.

Optionally, further comprising an interface means coupled to the microprocessor for interfacing data to further register and delete music files in the memory via a computer.

Preferably, when a ring signal arrives while the music file is playing, the play mode of the music file is released and the ring signal is generated.

As such, when a plurality of music files are stored in the memory and the music playback key of the keypad is selected, it can be seen that the user can listen to his / her preferred music through the MPEG audio decoder means and the earphone of the mobile communication terminal.

As a result, by adding a music function to the mobile communication terminal, there is an advantage that it can be utilized not only for the telephone use between the two parties but also for audio reproduction.

And, there may be a plurality of embodiments of the present invention, the following will be described in detail for the most preferred embodiment.

Through this preferred embodiment, the objects, other objects, features and advantages of the present invention will become more apparent from the following description with an embodiment according to the present invention in connection with the accompanying drawings shown for illustrative purposes.

Hereinafter, exemplary embodiments of an audio reproducing apparatus of a mobile communication terminal according to the present invention will be described in detail with reference to the accompanying drawings.

In addition, in each figure used for description, the same component may be attached | subjected, and may show the same number, and the overlapping description may be abbreviate | omitted.

2 is a block diagram illustrating an exemplary embodiment provided in an audio reproducing apparatus of a mobile communication terminal according to the present invention.

An audio reproducing apparatus of a mobile communication terminal according to the present embodiment includes a keypad 112 for inputting key data for dialing and transmission and reception by a caller, and data from the keypad 112 and the microphone 108. The voice signal of the caller is transmitted to the corresponding base station 113 closest to the terminal by the transmission and reception control of the microprocessor 106, and the high frequency signal transmitted from the base station 113 is received through an amplification process and a demodulation process. In the mobile communication terminal including the audio / logical control unit 103 which separates the data from the data and the audio signal is the speakerphone 109 and the data is displayed on the liquid crystal display unit 107. A music reproducing key provided in the nonvolatile second memory 200 and the keypad 112 to determine a reproducing mode of music files stored in the second memory 200. The second and second keys 112a, up / down keys 112b provided on the keypad 112 to select the music file, and music playback keys 112a and up / down keys 112b. A microprocessor 106 which reads and outputs any music file among the music files stored in the memory 200 and processes the lyrics data of the music file on the screen of the liquid crystal display unit 107, and the microprocessor ( The MPEG audio decoder 201 for decoding and outputting audio data of the music file read in 106 and the digital / analog converter for converting the audio data decoded by the MPEG audio decoder 201 to an analog signal and outputting the analog signal. 202, a low frequency amplifier 203 for amplifying the analog audio signal to a predetermined level and outputting the same to the earphone jack 205, and deleting, adding, and registering registration of music files stored in the second memory 200.And an interface unit 204 for interfacing the data of the personal computer and the data of the microprocessor 106 via the connector 206.

The audio reproducing apparatus of the mobile communication terminal according to the present invention made as described above will be described in more detail below.

First, while the mobile communication terminal is in a call waiting state, the user inserts a jack of a speaker with an earphone or an amplifier (not shown in the figure) into the earphone jack 205 and listens to music through the terminal, and plays the music of the keypad 112. When the key 112a is pressed, the microprocessor 106 performs a music play mode.

That is, when the music reproduction key 112a is input from the keypad 112, the microprocessor 106 reads any one music file among a plurality of music files stored in the second memory 200 of the CD-ROM type. At this time, the lyrics data is processed in the read music file and displayed on the screen of the liquid crystal display 107, and the audio data is provided to the MPEG audio decoder 201.

In this case, storing a large number of music files (number of songs and lyrics data) in the second memory 200 increases the capacity of the second memory 200, resulting in an increase in the size of the mobile communication terminal. Therefore, in order to be able to play music while minimizing the size of the mobile communication terminal, it is preferable to limit it to at least 6 songs and up to 10 songs.

It is also preferable not to store the above lyrics data in order to store as many songs as possible.

Subsequently, the MPEG audio decoder 201 restores the compressed audio data input from the microprocessor 201 to the original audio data and provides it to the digital / analog converter 202.

The digital / analog converter 202 converts the restored audio data into an analog audio signal and provides the converted audio data to the low frequency amplifier 203.

The low frequency amplifier 203 amplifies the analog audio signal converted from the digital / analog converter 202 to a sufficient size and outputs the same to the earphone or speaker through the earphone jack 205.

In addition, the user manipulates the up / down keys 112b provided in the keypad 112 or listens to his / her favorite music among the music files stored in the second memory 200, or the number keys of the keypad 112 are changed. If any one of the keys is pressed, the microprocessor 106 reads and plays the music file specified by the user from the music files stored in the second memory 200 in the manner described above.

In addition, when a music file stored in the second memory 200 is to be deleted, added, or changed, the cable of the personal computer is connected to the connector 206, and then the music file is deleted, added, or changed through the keyboard of the personal computer. The data is provided to the microprocessor 106 through the connector 206 and the interface unit 204, thereby deleting or additionally registering or changing the music files stored in the second memory 200. This becomes possible.

As such, when the ring signal arrives through the audio / logical control unit 103 while the music reproduction mode is being performed, the microprocessor 106 immediately stops the music reproduction mode and performs the control by the control of the audio / logical control unit 103. The ring signal is output to the speakerphone 109 to form a communication path between the two parties.

On the other hand, as a comparative example, unlike the prior art, that is, to form a two-way communication path through the keypad to communicate only with a voice call, a text service, a voice service, and a personal computer, the present invention is a mobile communication. The music function has been added to the terminal, it can be seen that it can be used for audio playback in addition to the two-way phone.

As a result, according to the present invention, by adding a music function to the mobile communication terminal, there is an advantage in that it is possible to play and listen to the music of the user's favorite through the mobile communication terminal without a separate audio playback device.

According to this application example, it is possible to provide a low cost terminal in terms of cost and a more efficient terminal in terms of reliability.

In addition, although specific embodiments of the present invention have been described and illustrated above, it is obvious that the present invention may be variously modified and implemented by those skilled in the art.

Such modified embodiments should not be individually understood from the technical spirit or the prospect of the present invention, and such modified embodiments should fall within the appended claims of the present invention.

It is clear from the above description that, according to the audio reproducing apparatus of the mobile communication terminal according to the present invention, after storing a large number of music files in a CD-ROM type memory, only the music which is preferred by the user is selected and played and listened. By doing so, there is an effect that the mobile communication terminal can be utilized not only for two-way telephone use but also for audio reproduction.

Claims (5)

A keypad for inputting key data for dialing and transmission and reception, and audio / logical control means for transmitting the data of the keypad and the voice signal obtained from the microphone to the base station by the transmission and reception control of the microprocessor and receiving and separating the data therefrom. In a mobile terminal including: The mobile communication terminal, (1) a memory that stores a plurality of music files; (2) a music play key provided in the keypad to determine a play mode of the music file stored in the memory; (3) a microprocessor which reads and outputs any one music file among music files stored in the memory according to whether the music play key is selected; (4) MPEG audio decoder means for decoding the audio data of the music file obtained by said microprocessor; (5) digital / analog conversion means for converting the decoded audio data into an analog signal; And (6) An audio reproducing apparatus of a mobile communication terminal, comprising low frequency amplifying means for amplifying and outputting the analog audio signal to a predetermined level. The method of claim 1, And storing the lyrics data of the song of the music file in the memory and displaying the lyrics data of the song on the LCD screen when the music playback key is selected. Device. The method of claim 1, And an up / down key for selecting one of a plurality of music files stored in the memory in the keypad. The method of claim 1, And an interface means coupled to the microprocessor for interfacing data to further register and delete music files in the memory through a computer. The method of claim 1, And if a ring signal arrives while the music file is playing, canceling the play mode of the music file and generating a ring signal.