KR100725033B1 - Karaoke chip with various functions and karaoke system using thereof - Google Patents

Abstract

A karaoke chip having various functions and a karaoke system adopting the same are provided to reduce a size of a main board, transmit a signal with a high speed and high reliability, and embed many elements on a board in one chip to perform the various functions. A CPU and DSP(Digital Signal Processor)(11) receives a selection specification of a user, and transmits or receives a signal corresponding to the selection specification as a control signal through an address bus, a data bus, and a plurality of control signal lines. An address and data bus inputs and outputs various signals outputted from the CPU and DSP(11). A device generates a read/write signal and a plurality of signals necessary for performing control. A sound source module(13) interworks with the CPU and DSP(11). The sound source module(13) has a ROM for sound source data, a RAM, and a sound source and stores basic sounds. An MP3(MPEG(Moving Picture Experts Group) layer 3) module(14) interworks with the CPU and DSP(11) and the sound source module(13), selects a desired music file, and reproduces and records the selected music file. A video encoder(16) interworks with the CPU and DSP(11), and displays a video signal stored in a memory(12) on an external display panel. A 2D graphic engine(15) interworks with the video encoder(16) and the CPU and DSP(11), and displays a 2D graphic on the external display panel. A video decoder interface(17) stores a video signal inputted from an external video camera or an external video signal input device in the memory(12) through a video decoder, or displays the video signal on the display panel through the video encoder(16). A NAND flash memory interface(19) interworks with the CPU and DSP(11), and transmits and receives a signal necessary for a NAND flash memory. A key matrix interworks with CPU and DSP(11), and controls a control button. An LED(Light Emitting Diode) checks whether a microphone is normally operated. An LCD displays an operating state of the control button. A communication port communicates with a computer. An input and output logic interface(18) allows a remote controller to remotely control. A memory controller(20) interworks with the CPU and DSP(11), and uses a program embedded in an S-DRAM in case of necessity.

Description

Karaoke chip with various functions and karaoke system employing the same {Karaoke Chip with Various Functions and Karaoke System using kind}

1 is an overall configuration diagram of a karaoke chip according to the present invention.

2 is a block diagram of a karaoke system to which a karaoke chip and a peripheral circuit is added according to the present invention.

               Explanation of symbols on the main parts of the drawings

10; Karaoke chips 11; CPI and DSP

12; Cache memory 13; Sound source module

14; MP3 module 15; 2D graphics engine

16; Video encoder circuitry 17; Video Decoder Interface

18; I / O interface 19; NAND Flash Memory Interface

20; S-DRAM Memory Controller

21; Master clock 22; Waveform Table PCM ROM

23; ADC circuit (audio signal) 24; DAC circuit (audio signal)

25; Component video signal 26; NAND fresh memory

27; S-DRAM memory 28; Memory pack slots

29; Key Matrix, LED (LED), LCD (LCD)

30; Remote control and backlight control 31; Video decoder

32; Wireless microphone 1 33; Wireless Microphone 2

34; Audio output (L) 35; Audio out (R)

36; NTSC / Composite video signal output

37; S-video signal

38; Component video signal output

39; USB port and UART communication port

The present invention can reduce the size of the main board essential to achieve a portable microphone or various types of karaoke system, transmit signals with high speed and reliability, and embed many elements on a substrate in one chip to perform various functions. The present invention relates to a karaoke chip implemented and a karaoke system employing the same.

Conventional song cycles are synchronized to synchronize analog RGB encoder circuits, circuits for video overlays, RGB encoder circuits, and circuits for video overlays around one chip consisting of CPU and DSP. Output Circuit, RAM, OS-ROM, Font-ROM, Data-ROM, Graphic-ROM, MP3 Decoder (MP3) and Sound Module Since each is configured using a separate device, there is a problem that the volume of the substrate cannot be realized in the form of a portable microphone and the reliability is low due to the complexity of the circuit.

Another conventional technology is a control signal, an address signal and a data signal output to or input from a chip including a CPU and a DSP, a video display IC, a ROM and a MIDI synthesizer for sound source data, and wire these signals into an internal circuit. Since it is not designed as a single chip to be processed, the size of the designed and fabricated substrate is increased to form each of these signal lines, and each signal line is formed as a pattern on a printed circuit board, resulting in complicated circuits, resulting in poor reliability and production. There is a problem that the unit price increases.

Another conventional technique is to record and store absolute pitches in memory, and there is no means to accurately compare the user's voice input through the microphone, so those who need to practice or calibrate to get the correct pitch are There is a problem that the inconvenience of having to practice or correct through the means.

Another prior art has the economic loss of having to repurchase the karaoke system itself because it has a USB port and there is no means to upgrade the programs of the karaoke system or download and upload song accompaniment to multiple memory packs, if necessary. There is a problem that users can not hear a variety of songs that users want because the MP3 function is not provided.

Accordingly, the present invention has been made to recognize and solve the problems of the prior art as described above, CPU, DSP, cache memory, sound source module, two-dimensional graphics engine, digital, video decoder interface, digital video encoder, NAND fresh memory interface, I / O logic interface and memory controller are integrated into one karaoke chip.

S-DRAM with OS operating system, graphic screen processing and screen processing software built around the karaoke chip, and NAND flash memory with boot operation, system operating program, fonts, graphics, data and songs And ADC and DAC circuit connected to the sound source module to convert the sound input from the outside into a digital signal to store or output through the encoder and decoder circuit through the speaker or output the song stored in the memory to the speaker, and external video signal A karaoke chip with a video decoder capable of inputting a signal, a digital video signal output section, a sound source waveform table PCM ROM having a parameter for configuring a basic sound, and a master clock and a master clock, and a karaoke system having the same Implementation to increase reliability, speed and stability, The purpose is to reduce weight.

Still another object of the present invention is to provide a USB port and a UART communication port, and to interwork with a computer, if necessary, to upgrade a program of a karaoke system or to download and upload song accompaniment to a plurality of memory packs. It is to implement karaoke system that is given learning function, note information correction function, and score check function.

It is still another object of the present invention to provide a waveform table PCM ROM incorporating a signal waveform for a basic sound and a parameter for configuring a sound while exchanging a signal with a sound source module, and compare a user sound input with a microphone based on a preset basic sound. It is equipped with a means to display the basic sound and the user's sound on the display panel so that users can practice and sing songs at the correct pitch so that they can learn the song efficiently by themselves.

Another object of the present invention is to implement a built-in microphone, a wired microphone and a wireless microphone, so that users can more easily learn the language and practice singing songs, and the user voice based on the absolute pitch stored in the memory inside the device. It is equipped with a means to prepare and accurately analyzes the user's voice in 128 steps through frequency analysis and level detector by FFT and displays it on the display panel (TV, monitor, etc.) so that accurate pitch can be obtained through repeated practice. And the user can sing along with the song efficiently, and by using the musical information correction means, the user can listen to and follow the foreign language pronunciation by using the basic sound for language learning stored in the memory as a means for correcting the pronunciation during language learning. To get it.

The present invention can reduce the size of the main board essential to achieve a portable microphone or various types of karaoke system, transmit signals with high speed and reliability, and embed many elements on a substrate in one chip to perform various functions. The present invention relates to a karaoke chip implemented and a karaoke system employing the same.

With reference to the drawings to facilitate understanding of the present invention. Figure 1 shows the overall configuration of the karaoke chip formed integrally according to the present invention, Figure 2 shows a karaoke system is added to the karaoke chip and peripheral circuits formed integrally according to the present invention.

The construction means according to the present invention will be described in detail. The karaoke chip according to the present invention includes a CPU and a DSP for controlling various programs stored in a system control and a memory, a cache memory for quickly processing the program, a ROM for sound source data, a RAM of a sound source module, and a sound source. Address bus is composed of integrated sound source module, two-dimensional graphics engine that enables two-dimensional graphics on display panel, digital video decoder interface, digital video encoder, NAND flash memory interface, input / output interface, MP3 module and memory controller. Databus, read / write signal, chip select signal and other control signals are integrated into one unit for quick and efficient exchange.

SDRAM with built-in program for OS operation, graphics processing and various screen control software, which is a program that controls the karaoke system in conjunction with the karaoke chip having the CPU and DSP, a sound source module, a memory controller, and a cache memory The S-DRAM is configured to send and receive address buses, data buses, read and write signals, chip select signals and other control signals quickly and efficiently.

An operation program for booting the system in conjunction with the karaoke chip having the CPU and DSP, a sound source module, a NAND flash memory interface, and a cache memory, predetermined system operating programs, fonts, graphic functions, data and songs required for system operation It has a built-in NAND flash memory.

In conjunction with the karaoke chip equipped with the CPU, DSP, sound source module and cache memory, converts the user's voice from the outside into a digital signal through a microphone and stores it or outputs it to the speaker through an audio encoder, a user voice and song accompaniment mixer, and an audio decoder. An audio ADC and an audio DAC circuit are provided.

In other words, when the user selects a desired song, the mixer selects a song from the internal memory, selects and mixes it with the corresponding song accompaniment, and mixes the user voice, echo, and song accompaniment input through the microphone. Means for outputting to the speaker via the.

And a video decoder capable of inputting a video signal input from an external CCD video camera or an external video input device in conjunction with a karaoke chip having the CPU and DSP, a video decoder interface circuit, and a cache memory. And means and an image file (for example, an NTSC or PAL method) for outputting a video signal embedded in the karaoke to an external display panel as a video in association with the karaoke chip having the CPU, the DSP, the video encoder circuit, and the cache memory. Means for displaying a still image on the display panel, for example, a JPG file, or the like.

The video signal processing method is a digital video signal processing method. In processing a video signal displayed on a display panel, a video signal input by a video signal input by an external CCD video camera or an external video device and a video signal stored in a karaoke memory Is stored at 30 frames per second, and the memory controller controls the input / output of the video signal stored in the karaoke memory on a frame basis, and means for outputting the video signal to the display panel using a clock signal and horizontal and vertical synchronization signals. Equipped.

The video signal output through the video encoder is produced as a composite video signal through a general NTSC / PAL method or an S-Video method that separates luminance and color and emits the NTSC / PAL method. Component video signal (YCbCr, Y; Luminance, Cb; Blue color) that transmits the video signal from or through S-Video and transmits it separately by luminance and color to obtain a clearer and clearer video signal. And Cr; red color).

In the conventional karaoke chip and karaoke system, an analog method is used in processing a video signal, thereby causing a problem of signal shaking and flow due to incorrect alignment of vertical and horizontal synchronization signals. Key matrix for controlling various control buttons in conjunction with the karaoke chip including the CPU, DSP, input / output logic interface circuit and cache memory, LED for checking the operation of the wireless microphone, and input by the key matrix LCD, used for displaying the signal to be displayed or other control signal, backlight control, and means for controlling the signal input by the remote control button.

The sound source module is composed of a ROM for sound source data, a RAM of a sound source module, and a sound source, and stores various kinds of music files and basic sounds related to the music data, and parameters for configuring sample waveforms and sounds for the basic sounds. In conjunction with the Wave Table PCM ROM (Wave Table PCM ROM) is provided with a means for outputting the basic sound necessary for practice to the speaker through the DAC circuit in order to sing the song correctly before singing and singing.

Karaoke system according to the present invention has a wireless microphone, a wired microphone and a built-in microphone as a means for inputting the voice from the outside, the user's voice input through the microphone through the ADC circuit to the memory and memory pack inside the sound source module PCM (PCM), ADPCM, MP3 type of audio recording as well as the means of recording, between the ADC module and the sound source module and the FFT circuit and the voice to detect the level of the input sound It is provided with a level detector, and detects the frequency and magnitude of the sound input from the user and has a means for displaying the wrong portion on the display panel compared to the basic sound stored in the sound source module. The FFT circuit and the voice level detector detect the size and frequency of the voice input by the user through the speaker so that the user can efficiently and economically perform the song practice, listen to the basic sound, and follow the song. Contrast with the basic sound stored in the module, and has a configuration that displays the wrong result on the display panel.

It is also used as a means of giving a score for a song. It is equipped with a USB port and a UART communication port via the input / output logic interface circuit so that system software of karaoke can be upgraded through a computer or required music files can be downloaded.

The MP3 module embedded in the karaoke chip including the CPU, DSP, and cache memory exchanges data selected by the user with the CPU, DSP, cache memory, address, and data bus. It is provided with a configuration that allows you to listen to the music you want to export through the speaker. Look at the embodiment according to the present invention.

EXAMPLES

A specific embodiment according to the present invention will be described with reference to the drawings. The karaoke chip according to the present invention includes a CPU and DSP 11 for controlling various programs stored in a system control and a memory, a cache memory 12 for quickly processing the program, a ROM for sound source data, and a RAM of a sound source module. And a sound source module 13 composed of a sound source, an MP3 module 14, a two-dimensional graphics engine 15 that enables two-dimensional graphics on a display panel, a video encoder circuit 16, and a video decoder interface 17. ), The NAND flash memory interface 19, the input / output logic interface 18, and the memory controller 20 integrally constitute a signal necessary for address bus, data bus, read / write signal, chip select signal, and other control. It is composed of one chip in one body so that they can be exchanged quickly and efficiently.

OS (OS) operating program which is a program controlling the system in conjunction with the karaoke chip having the CPU and DSP (11), sound source module (13), memory controller (20) and cache memory (12) S-DRAM with built-in screen control software is configured to send and receive address bus, data bus, read / write signal, chip select signal and other control signals quickly and efficiently.

An operating program for booting the system in conjunction with the karaoke chip 10 having the CPU and the DSP 11, the sound source module 13, the NAND flash memory interface 19, and the cache memory 12, a system operating program, and a font. And a NAND flash memory 26 in which graphics functions, data necessary for system control, and songs are embedded.

In conjunction with the karaoke chip 10 having the CPU and DSP (11), the sound source module (13) and the cache memory (12) is provided with an ADC encoder circuit 23 for inputting the user's voice from the outside through a microphone; User can select song from various music files (song accompaniment, PCM, ADPCM, MP3 type) stored in the internal memory and mix song accompaniment, echo sound and user voice. And a DAC decoder circuit 24 for mixing in the speaker. In conjunction with the karaoke chip 10 having the CPU and DSP 11, the video decoder interface circuit 17, and the cache memory 12, a video signal input from an external CCD image camera or the like can be input. And a karaoke chip (10) having a two-dimensional graphics engine (15) and a CPU and DSP (11), a video encoder circuit (16), and a cache memory (12). Means for outputting the video signal embedded in the karaoke to the external display panel in the NTSC or PAL method.

The video signal processing method according to the present invention is a digital video signal processing method for processing a video signal to be displayed on a display panel and a video signal input by an external CCD video camera and video signals stored in a karaoke internal memory per second. In order to output the video signal stored in the frame unit and to the external display panel, the memory controller which controls the output of the video signal, the clock signal, and the horizontal and vertical synchronization signals are interlocked with each other to output the video signal. It is provided with a means to.

In the conventional karaoke chip and karaoke system, the analog signal is used to process the video signal, and thus, when the vertical and horizontal synchronous signals cannot be accurately matched, there is a problem in that the signal shakes and flows occur frequently.

Key matrix 29 for controlling various control buttons in conjunction with the karaoke chip 10 having the CPU and DSP 11, the input / output logic interface circuit 18 and the cache memory 12, and whether the wireless microphone is operated To control the input signal for the remote control and the backlight control 30 and the LED 29 for checking the LED 29 and the LCD 29 used for displaying a signal input by the key matrix or other control signals. Means.

The sound source module 13 is composed of a ROM for sound source data, a RAM of a sound source module, and a sound source, and stores various types of music files and basic sounds related to the music data, and configures sample waveforms and sounds for the basic sounds. In conjunction with the Wave Table PCM ROM (22) with the parameters to perform the practice, the basic sound necessary for the preparation of the song correctly before the song is sent to the speaker via the DAC circuit 24 and the amplifier. It is provided with a means for output and listening.

Karaoke system according to the present invention has a wireless microphone, a wired microphone and a built-in microphone as a means for inputting the voice from the outside, and the user's voice input through the microphone through the ADC circuit 23, audio encoder, mixer and audio decoder A song accompaniment, echo, and user voices are provided in the form of recording in the internal memory or the memory pack, as well as between the ADC circuit 23 and the sound source module between the FFT circuit and the input sound It is provided with a voice level detector for detecting the level of the user and means for detecting the frequency component and the magnitude in the voice of the user input through the microphone and compared to the basic sound stored in the sound source module and the display panel. The FFT circuit and the voice level detector detect the magnitude and frequency components of the voice input by the user through a microphone so that the user can efficiently and economically practice the song, listen to the basic sound and follow the song. It has a structure to compare with the basic sound stored in (13). A USB port and a UART communication port 39 are installed through the input / output logic interface circuit to upgrade the system software through a computer or to download necessary music files.

The MP3 module embedded in the karaoke chip 10 having the CPU and DSP 11 and the cache memory 12 includes an encoder and a decoder, and includes an CPU and a DSP, a cache memory, an address and a data bus. Data can be exchanged through each other, and users can select the music files they want to listen to from various types of music files stored in the memory in the same way as general MP3 and export them to the speaker through the digital audio signal mixer of the sound source module to listen to the desired music. It consists of a decoder and an encoder that converts audio signals into MP3 files when recording user voice and audio output. That is, the MP3 module comprises an MP3 encoder and an MP3 decoder, and the MP3 encoder is configured to convert audio data and user voice to be recorded into MP3 format audio files, and the MP3 decoder is stored in a memory. It is provided with a configuration for converting the recorded file to audio formats of PCM, ADPCM, and MP3 so as to reproduce the recorded file.

The MP3 file can also be used for song accompaniment. In addition, the MP3 module displays the subtitles on the display panel using the music lyrics and lyrics sync signal stored in the MP3 music file, and the user inputs through the microphone while the user sings along with the built-in, wired or wireless microphone. The karaoke function that can listen to the user voice and song accompaniment through an external speaker or headphones has a further configuration.

Distortion elimination circuit is provided to remove the distortion of the distorted sound due to the high amplitude in the amplification step before the speaker is exported from the DAC circuit, the distortion elimination circuit so that the signal is not cut when amplifying the output signal (Cutting) It is configured to amplify the signal in a wide range of plus and minus.

Karaoke system according to the present invention is a program for learning a variety of languages using a means that can analyze the sound of the user input through a wireless microphone, a wired microphone and a built-in microphone, and transmits and receives wirelessly with a general television receiver By selecting the learning mode and the desired content, a means for learning the languages of various countries more accurately is provided. In other words, by using the subtitles and speakers displayed on the display panel according to various kinds of language programs embedded in the memory of the karaoke, it has functions such as listening and listening to sentences, and a pitch check means through the FFT filter. The means for analyzing the user's voice is provided to indicate the accuracy of the pronunciation or to indicate the wrong part.

More specifically, the voice signal input through the built-in microphone, wired and wireless microphone is transferred to an FFT filter, a level detector, and a circuit for generating an echo effect, and the voice passing through a circuit for generating an echo effect is a speaker. The echo sound is generated through the voice signal, and the voice that passes through the level detector is converted into a loudness value corresponding to the input sound by passing through a circuit for checking the size of the input voice and converting it in 128 steps.

The voice input to the FFT filter passes through the FFT filter circuit to detect the frequency of the voice through spectrum analysis of the voice, and converts the detected frequency into the scale code of the music font. The music note comment format is constructed by combining the scale code and the voice of the converted music font and transmitted to the CPU. The CPU displays the keyboard on the screen of the display panel, and generates the basic sound through the sound source module from 'degree' to 'hour' with the octave and key values corresponding to the keyboard. It is designed and manufactured so that the user can compare the basic sound with the user sound by listening to the basic sound generated by the module and displaying a value corresponding to the sound input through the microphone on the keyboard on which the basic sound is displayed.

When the user inputs the voice continuously and selects a means for converting the input voice to confirm the accuracy of the input voice, the user continuously analyzes and displays the data in which the voice continuously input and the basic sound are compared. . In addition, if there is a general difference between the basic sound and the user's voice previously stored in the memory is provided with a means for raising or lowering the overall sound.

This can be useful for amateurs or professionals to practice singing at the correct pitch.

By using the karaoke chip, the peripheral circuit and the pitch check means as described above is provided with a means for assigning a score to a song sung by the user is provided with a means for improving the interest of the user.

In addition, the karaoke according to the present invention has the same function as a commercial MP3 module, has an MP3 encoder and decoder, and has a means for enjoying various music. The background image displayed on the external display panel is a moving image or a still image, and is configured to be selectively used by a user as needed. In addition, there is a recording slot and a pack for the user so that the user can record at any time if desired, and the user can connect to the computer through the USB port and the UART 39 communication port if necessary. You can choose from songs recorded in karaoke or songs already stored on your personal computer for permanent storage and send e-mails to homepage background music, music letters, or anyone you want.

The present invention is composed of one karaoke chip integrated CPU (CPU) and DSP (DSP), cache memory, sound source module, two-dimensional graphics engine, video decoder interface, video encoder, NAND interface, input and output interface and memory controller, Around the karaoke chip, the SDRAM including the OS operating system, the graphic screen processing and the screen processing software, the NAND flash memory including the boot operation, the system operating program, fonts, graphics, data, and songs, ADC and DAC circuit that is connected to sound source module to input sound from outside and exports stored song, video decoder to input external video signal, sync signal and basic sound for digital video signal output and basic sound Source waveform table PCM ROM and master clock with parameters to configure By implementing the equipped karaoke chip and karaoke system, there is an effect that greatly increases the reliability, speed and stability, and greatly reduces the size and weight of the circuit board.

Another effect of the present invention is to have a USB port and UART communication port, and to upgrade the program of the karaoke system or to download and upload song accompaniment to a plurality of memory packs if necessary. By implementing a karaoke system with language learning function, musical information correction function, and score check function, the economic loss caused by frequent equipment replacement is improved and users' interest is improved to increase demand.

Another effect of the present invention has a waveform table PCM ROM having a signal waveform for the basic sound and parameters for configuring the sound while exchanging a signal with the sound source module and means for comparing the user sound based on the preset basic sound. By comparing the basic sound and the user sound is displayed on the display panel so that users can learn the song efficiently by practicing and singing the song at the correct pitch.

Another effect of the present invention is to implement the use of the internal microphone, wired microphone and wireless microphone, so that users more convenient language learning and song practice, user voice based on the absolute pitch stored in the memory of the device It is equipped with a means of comparing and comparing the user's voice accurately through frequency analysis by FFT circuit and displayed on the display panel (TV, monitor, etc.) so that accurate pitch can be obtained through repetitive practice. It is possible to sing along with the song, and use the basic information for language learning stored in the memory using the information correction means as a means of correcting the pronunciation that the user follows during language learning. To get it.

Claims (10)

In one piece of karaoke chip, CPU and DSP for receiving the user's option and sending or receiving the control signal through the address bus, data bus and a plurality of control signal lines; An address and data bus for inputting and outputting various signals output from the CPU and DSP, means for generating a plurality of signals necessary for read / write signals and control; A sound source module interworking with the CPU and DSP, comprising a ROM for sound source data, a RAM of a sound source module, and a sound source for storing basic sounds; MP3 module configured to select and play and record desired music files in conjunction with CPI and DS and sound source module, A video encoder interworking with the CPU and DSP and displaying a video signal stored in a memory on an external display panel; A two-dimensional graphics engine that enables two-dimensional graphics on an external display panel by interworking with the video encoder, CPU, and DSP; A video decoder interface for storing a video signal input from an external video camera or an external video video signal input device through a video decoder in a memory or displaying the video signal on a display panel via the video encoder; A NAND fresh memory interface configured to communicate with the NAND fresh memory to and from the NAND fresh memory in conjunction with the CPU and DSP; Key matrix for controlling the control button in conjunction with the CPU (CPU) and DSP (DSP), LED (LED) for checking the normal operation of the microphone, LCD (LCD) display unit for displaying the operation status of the control button and A communication port configured to communicate with a computer, an input / output logic interface for remote control by a remote controller, A karaoke chip in which a memory controller is formed integrally with the CPU and DSP so that a program embedded in an S-DRAM can be used as needed. In the portable karaoke cycle, A sound source module consisting of CPU and DSP for sending and receiving control signals, a ROM for sound source data, a RAM and a sound source of a sound source module, a video encoder for displaying an image signal on a display panel, and a display. A two-dimensional graphics engine that enables two-dimensional graphics on the panel, a video decoder interface, a NAND flash memory interface, an input / output logic interface, a karaoke chip formed of an integrated memory controller, An LCD display unit and a key matrix configured to be linked to the karaoke chip so that users can control various control buttons by looking or by hand; An audio ADC and a DAC circuit that accepts a user's voice through a microphone or mixes an audio signal and a musical accompaniment input through a microphone in a voice mixer and sends it to a speaker; S-DRAM, which includes a program for operating OS and a graphic effect processing program, and has a buffer for storing a video signal for outputting a screen on a display panel in units of frames, A waveform table PCM ROM that stores sample waveforms for the basic sound and parameters for composing the sound, NAND fresh memory that stores the program for system boot operation, the program for system operation, the font program and the lyrics of the song, A video decoder for decoding a video signal input from a CCD camera; It is connected with the sound source module and converts the audio signal input from the microphone into a digital signal, and the ADC (DC) and DC circuit (DAC) circuit for mixing the converted digital voice signal and the song accompaniment stored in the memory to the speaker Portable Karaoke Cycle. The method according to claim 2, In front of the sound source module, an FFT circuit for analyzing the spectrum of the user's voice input through the microphone and extracting the pitch, a level detector for detecting the magnitude of the input user's voice, and a circuit for generating an echo effect are further included. Added portable karaoke cycle. The method according to claim 2, The screen displayed on the display panel through the video encoder is stored in a memory frame by frame in order to process the digital image signal on the display panel, and includes a memory controller for controlling the memory signal stored in the display panel. A portable karaoke machine further comprising means for displaying and an image synchronizing generator. The method according to any one of claims 2 to 4, The means for inputting the user voice signal is a portable karaoke cycle consisting of a built-in microphone, a wired microphone and a wireless microphone. delete delete delete The method according to any one of claims 2 to 4, Singing cycle is an MP3 encoder that converts audio data or user's voice to MP3 format audio file, and MP3 file of PCM or ADPCM type to play the recorded file in memory. Portable karaoke cycle further comprising MP3 module consisting of MP3 decoder. The method according to claim 9, The MP3 module displays the music lyrics and subtitle synchronization signals stored in MP3 music files as subtitles on the display panel, and listens to the user voice and song accompaniment input through the microphone through a speaker while singing along with a microphone. Portable Karaoke cycle with more karaoke features.

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