KR100356033B1 - MP3 player with recording function - Google Patents

Abstract

The present invention relates to an MP3 player having a recording function, and includes an antenna, a duplexer, a reception amplifier, a detector, a baseband, an audio signal output terminal, a microphone, an audio signal input terminal, a modulator, an amplifier, a local oscillator, and a mixer. Analogue to MP3 player configuration consisting of decoder, discriminator, display, keypad and microprocessor, logic interface, MP3 receiver, MP3 file encoder, memory, MP3 file decoder, audio output, digital / analog converter and earphone jack By adding the digital converter / signal processing unit, it is possible to store the information using the wireless device and the information using the audio device as well as the information using the audio device. Listen in high quality, easy to carry and download compared to traditional MP3 players It is easy to satisfy various needs of consumers, and can add additional functions to the system operation later and can be used as a language learner.

Description

MP3 player with recording function

The present invention relates to an MP3 player having a recording function, and in particular, the MP3 player is configured by using a wireless communication function and a recording function through an audio device, so that a computer, a wireless communication device, and a general sound device can be used. The present invention relates to an MP3 player having a recording function that can be conveniently and simply used by downloading MP3 files of desired music or information, storing them while compressing them in a memory, restoring them when necessary, and playing them in high quality sound.

It is well known that the development of the telecommunications industry has resulted in an increase in the number of people using wireless communication devices, so that almost everyone can talk to the person they want while on the move.

Wireless communication devices such as mobile phones, PCS, and two-way pagers provide more convenience to users by performing calculator functions, voice mailbox functions, electronic organizers, calendar functions, and weather forecast functions while receiving information through base stations. have.

Music lovers also enjoy listening to playing tapes or CDs that contain the music they want through sound equipment such as cassette tape players or CD players.

However, such a general wireless communication device has a disadvantage in that it can not listen to the desired music instead of being able to receive information through the base station.

On the other hand, audio cassettes in general cassette tape players and CD players have the advantage that they can always listen to music recorded on cassette tapes and CDs. When playing a CD, you had to listen to a song you don't like while listening to your favorite song.

In addition, by compressing the voice signal into the internal memory, it can be stored in the memory and restored when desired. The MP3 player has the advantage of being able to hear high quality sound. On the other hand, it was inconvenient to use because a computer must be available to download the desired music file.

Accordingly, the present invention simply configures the wireless communication function and the recording function through the audio device in the MP3 player, and simply downloads the MP3 file of the desired music or information using a computer, a wireless communication device, and a general sound device. It is an object of the present invention to provide an MP3 player having a recording function that can be conveniently and simply used by being stored in a compressed state, restored, and reproduced as needed in high sound quality.

In order to achieve the above object, the present invention provides an antenna, a duplexer, a reception amplifier, a detector, a baseband, an audio signal output terminal, a microphone, an audio signal input terminal, a modulator, an amplifier, a local oscillator, a mixer, a decoder, a discriminator. , Analog / digital converter and MP3 player with display, keypad and microprocessor, logic interface, MP3 receiver, MP3 file encoder, memory, MP3 file decoder, audio output, digital / analog converter and earphone jack. By adding a signal processing unit, it is possible to store information using a wireless device as well as information using a wireless communication device, as well as information using an audio device, so that only the desired music or information can be downloaded and stored, and then listened in high quality. , Portable, and easy to download compared to traditional MP3 players To grant the additional features that can meet the various needs as well as future operating system and will have to enable the use of a language learner.

1 is a block diagram schematically showing the configuration of an MP3 player with a recording function according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

2: duplexer 5: baseband

21: MP3 receiver 22: MP3 file encoder

23: memory 24: MP3 file decoder

Hereinafter, the present invention will be described in detail according to an embodiment.

1 is a view schematically showing the overall configuration according to an embodiment of the present invention.

The present invention provides an antenna (ANT) 1 for transmission and reception with a base station (not shown), and a duplexer (DUPLEXER) 2 for inputting and outputting audio signals, control signals, and data signals through the antenna 1. And, when the audio signal is received through the duplexer 2, a reception amplifier 3 for gain-compensating and amplifying the received signal, and detecting the signal amplified by the reception amplifier 3, and amplifying the audio signal. A detection unit 4 for demodulating and outputting the signal, and an audio signal detected by the detection unit 4 is received through a base band 5 and output to a speaker 7 connected through a wired or wireless connection so that voice can be heard. When the audio signal output terminal unit 6, the audio signal is input through the microphone (9) and the audio signal input terminal unit 8 for transmitting it to the base band 5, and is input through the base band (5) Five A modulator 10 for modulating a video signal into a transmission frequency signal, and an amplification for amplifying the signal modulated by the modulator 10 into a transmission signal and transmitting the amplified signal to the duplexer 2 for output through the antenna 1. The mixer 11 and the mixer 12 for mixing and outputting the control signal received through the duplexer 2 with the intermediate frequency signal supplied from the local oscillator 13, and is output through the mixer 12 A decoder 14 for waveform-shaping a high frequency control signal in a digital form, and a discriminator for outputting a comparison signal by determining whether the signal output from the decoder 14 is transmitted to itself by comparing it with its own address ( 15), MODE key, power on / off key, CLEAR key, SEND key, redial key, numeric key from 0 to 9, SILENT key, READ Key, UP key, DOWN key, storage key, input key, etc. The microprocessor 17 which controls the internal operation according to the keypad 16 consisting of a, the comparison signal received through the discriminating unit 15 and the user's options input through the keypad 16. And a display unit 18 for displaying a current operation state and a number pressed by the keypad 16 while receiving a data signal from the microprocessor 17, and a control signal received through the base band 5. And a logic interface 19 for transmitting a data signal to the microprocessor 17 or for transferring data from the microprocessor 17 to the base band 5, and controlling the microprocessor 17. An MP3 receiver 21 which downloads the MP3 file received through the baseband 5 and is transmitted as a digital signal via the analog / digital converter 20; The MP3 file encoder 22 compresses the information of the MP3 file transmitted through the MP3 receiver 21 while being controlled by the parser 17, and the MP3 encoder 22 is controlled by the microprocessor 17. The memory 23 storing the compressed MP3 file information at the address designated for each song or deleting the stored information, and reading the information of the MP3 file stored in the memory 23 under the control of the microprocessor 17. MP3 file decoder 24, which decompresses and decompresses while decoding, and an audio signal of an MP3 file, which is converted by analog signal while being restored by the MP3 file decoder 24 and passed through the digital / analog converter 25, Audio output unit 26 for amplifying and waveform shaping and listening to music in the best condition through earphones connected to earphone jack 27, and audio of general sound equipment 31. After the amplification and waveform shaping of the audio signal transmitted through the audio input jack 28 into which the plug 33 of the output cable 32 is inserted, the MP3 receiver 21 is passed through the analog / digital converter 29. It consists of the signal processing unit 30 to transmit to.

MP3 player with a recording function of the present invention configured as described above, when the user presses the power on / off key once while holding the main body (A) by hand, the user wireless communication in the microprocessor 17 that recognizes this A display for mode selection is made on the display unit 18 to determine whether to select a mode or a mode of MP3.

When the user wants to make a call, the user selects a mode of wireless communication using the up key and the input key of the keypad 16, and then inputs the number he / she wants to call while pressing the numeric key of the keypad 16.

If the phone number entered matches the phone number you want to call, the send key is turned on again so that the signal corresponding to the phone number is sent to the base station so that the call with the other party can be made.

That is, when it is in an online state with the other party through the base station, the transmission and reception audio signal, the control signal and the data signal input through the antenna 1 are received through the duplexer 2, and the reception amplifier 3 The audio signal is demodulated and detected by the detector 4 while gain compensation is performed at

The audio signal detected by the detection unit 4 is transmitted to the audio output terminal unit 6 through the base band 5 and output to the speaker 7 connected by wire or wireless to listen to the voice of the other party.

When the user's audio signal is input through the microphone 9, the audio signal input terminal unit 8 transmits the signal to the modulation unit 10 via the base band 5 to modulate the audio signal into a transmission frequency signal. The amplification unit 11 outputs through the duplexer 2 and the antenna 1 so that the other party can hear the user's voice.

Meanwhile, the control signal received through the duplexer 2 is mixed with the intermediate frequency signal supplied from the local oscillator 13 in the mixer 12 so that the high frequency control signal is waveform-shaped in the digital form by the decoder 14. The discrimination unit 15 determines whether it is delivered to itself by comparing with its own address, and transmits a comparison signal to the microprocessor 17 to display the state that a call is made to the display unit 18 to notify the outside. Allows to control internal operation.

If the user having the MP3 player with the recording function of the present invention turns on the storage key of the keypad 16 while selecting a mode of the MP3 in order to receive the download wirelessly, the microprocessor 17 recognizes this. The control signal is output to the logic interface 19 in order to receive the control signal and the data signal received through the base band 5.

The microprocessor 17 controls the MP3 file, which is a data signal transmitted through the baseband 5, to be selectively downloaded to the MP3 receiver 21 via the analog / digital converter 20.

Here, the MP3 file downloaded to the MP3 receiver 21 does not receive all the files of many songs transmitted through the base station, but displays the table of contents included in the control and data signals received by the microprocessor 17. If the user finds the desired song by using the up and down keys, the user can select and save the song to be downloaded by turning on the save key.

The music downloaded through the MP3 receiver 21 in the state where the user selects the MP3 mode is the MP3 file output from the MP3 receiver 21 by the MP3 file encoder 22 under the control of the microprocessor 17. The information is received and compressed to be stored in the memory 23 with high storage efficiency.

The memory 23 under the control of the microprocessor 17 stores the information of the compressed MP3 file transmitted through the MP3 encoder 22 at an address designated for each song or removably.

When the user turns on the lead key of the keypad 16 without selecting a mode for downloading and storing the MP3 mode, the microprocessor 17 recognizes the internal music to select a song that the user wants to listen to. The table of contents of the songs stored in the memory 23 is read and displayed on the display unit 18.

When the user designates a desired song by using the up key and the down key, and turns on the input key, the microprocessor 17 recognizes the information of the MP3 file of the song stored at the specified address of the memory 23, and the MP3 file decoder The signal transmitted to the decoder 24 is decoded, and the decompressed signal in the MP3 file decoder 24 is converted into an analog signal by the digital / analog converter 24 and transmitted to the audio output unit 26.

That is, the analog signal converted from the digital / analog converter 25 of the MP3 file restored by the MP3 file decoder 24 is amplified and waveform-shaped by the audio output unit 26 to perform music in the best condition. Listening is possible through the earphone (not shown) connected to the earphone jack 27.

At the same time, when the sound device is operated by inserting the plug 33 of the audio output cable 32 of the general sound device 31 into the audio input jack 28, the sound signal reproduced by the sound device such as a CD player or a cassette tape recorder, etc. MP3 file encoder is transmitted to the signal processing unit 30 through the audio input jack 28, amplification and waveform shaping process, and then transmitted to the MP3 receiving unit 21 via the analog / digital conversion unit 29. It may be compressed at 22 and stored in the memory 23. In other words, the MP3 file is compressed by the MP3 file encoder 22, stored in the memory 23, restored by the MP3 file decoder 24, and the MP3 file decoder 24 even when using the general audio device 31. The analog signal converted by the digital / analog converting unit 25 is restored by the digital / analog converting unit 25, and the audio signal is amplified and waveform-shaped at the audio output unit 26 to connect the music to the earphone jack 27 in the best condition. You can also listen through the earphones.

Although the present embodiment has described a case in which a wireless communication device is used as a mobile phone, even when using a PCS or a two-way wireless pager, there is an advantage that the MP3 file of a desired song can be downloaded through each base station and listened in clean sound quality.

In addition to the MP3 player, if a caption function is displayed to display information corresponding to the lyrics of the song being played, it can be used as a language learner.

Therefore, according to the MP3 player having a recording function of the present invention, an antenna, a duplexer, a reception amplifier, a detector, a baseband, an audio signal output terminal, a microphone, an audio signal input terminal, a modulator, an amplifier, a local oscillator, a mixer, MP3 player consists of decoder, discriminator, display, keypad and microprocessor, logic interface, MP3 receiver, MP3 file encoder, memory, MP3 file decoder, audio output, digital / analog converter and earphone jack. By adding digital converter and signal processing unit, it is possible to save information using wireless communication device and computer using information as well as sound information by using audio device. Listen, portable and down compared to traditional MP3 players It is easy to load and can satisfy various needs of consumers, and can add additional functions to the system operation later and can be used as a language learner.

Claims (1)

A duplexer 2 connected to the antenna 1, a detector 4 connected to the duplexer 2 through a reception amplifier 3, and a speaker 7 connected to the detector 4 through a base band 5. Is connected between the audio signal output terminal unit 6, the audio signal input terminal unit 8 connected between the microphone 9 and the base band 5, and the base band 5 and the amplifier 11 A modulator 10 for transmitting to the duplexer 2, a decoder 14 connected through the duplexer 2 and a mixer 12, and a discriminator for discriminating a signal output from the decoder 14 and outputting a comparison signal. 15, a microprocessor 17 for controlling an internal operation while receiving an option through the keypad 16 and a comparison signal of the discriminating unit 15 and displaying an operating state on the display unit 18, Transfer control signals and data signals to each other between the base band 5 and the microprocessor 17. The logic interface 19, the MP3 receiver 21 which downloads the MP3 file transmitted from the baseband 5 through the analog / digital converter 20, and compresses the information of the MP3 file into a memory ( MP3 file encoder 22 to be stored in the 23, read and restore the information of the MP3 file stored in the memory 23, and passes through the digital / analog conversion unit 25 to the audio output unit 26 to the earphone jack (26) In the MP3 player having a recording function composed of MP3 file decoders 24 to be output through An audio input jack 28 into which the plug 33 of the cable 32 for audio output of a general sound device 31 is inserted; A signal processor 30 for amplifying and waveform shaping the voice signal transmitted through the audio input jack 28 in the signal processor 30; And an analog / digital converter (29) for receiving the amplified and waveform-formed analog signal from the signal processor (30) and converting it into a digital signal and outputting the digital signal to the MP3 receiver (21). MP3 player.