HK1023839A1

HK1023839A1 - Portable karaoke device

Info

Publication number: HK1023839A1
Application number: HK00102991A
Authority: HK
Inventors: 朴炳瑢
Original assignee: 万得利有限公司; 朴炳瑢
Priority date: 1997-12-31
Filing date: 2000-05-19
Publication date: 2000-09-22
Also published as: CN1214384C; CN1240296A

Description

Portable video song accompaniment apparatus

Technical Field

The invention relates to a portable video song accompaniment machine.

Background

As described in detail, an audio signal inputted from a wireless or wired microphone, a video signal inputted from an external video device, a VCD, or a semiconductor memory, a caption signal inputted from an external video device, a VCD, or a semiconductor memory, and an accompaniment music signal inputted from a VCD or a semiconductor memory are mixed and then modulated into a high frequency signal to be transmitted in a wireless form or outputted in a wired form. The portable video-song accompaniment apparatus prevents the above-mentioned transmission frequency and reception frequency from being interfered by the transmission and reception frequencies generated by other apparatuses. And the accompaniment sound data and the lyric auxiliary data are easily added, deleted or exchanged.

Generally, in a karaoke hall, a hotel, or a rest room of a company or a home, a user watches images and subtitles displayed on a tv screen, and then accompanies sounds output from a speaker for a cable microphone to sing a desired song. Recently, the practice of singing or relieving stress has been carried out, and a tendency of rapid popularization has been shown.

The video-song accompaniment apparatus of the same kind generally comprises the following components; an image drawer for drawing out the image data from the image data memory to reproduce, a caption decoder for drawing out the accompanying music data from the caption data memory to decode, an accompanying music reproducer for drawing out the accompanying music data from the medium-sized data memory to reproduce with the power signal, are respectively manufactured in a set form and connected to each other. Therefore, the video and caption signals reproduced and decoded in this way are mixed to form a video screen, and the video screen is decoded into r.g.b. of color signals and output. The central controller for making the caption displayed on the video screen continuously change in color is set as another machine device. In particular, since many supplementary electronic components are complicatedly connected to the video extractor, the caption decoder, and the accompaniment music player for reproducing and decoding the video and caption, a mixer for the video and caption, and an r.g.b. decoder for decoding the mixed video into an r.g.b. signal and outputting the signal are installed in the central controller. The mixer and the R.G.B. decoder are formed by a large number of Integrated Circuits (ICs). The voice of the user is inputted through a wired/wireless microphone and synthesized with the power supply of the accompaniment music player. It is output by the expander simultaneously with the accompanying song. And simultaneously, the encoded R.G.B. signal and the input caption on the GRT screen are overlapped and displayed on a determined image screen.

Therefore, the conventional video-song accompaniment apparatus has the following problems in this respect:

the system is not only large in volume and difficult to disassemble and arrange due to the fact that a plurality of machines are arranged layer by layer, but also has problems when the machines move along with the change of places due to the fact that the machines are arranged in fixed positions, and the connection is complex due to the fact that a large number of electric appliances and parts of an electronic demagnetizer form signal connection in the prior system. Therefore, the unit price of the machine is increased, and the selling price is increased accordingly.

In order to solve such a problem, a video-song accompaniment apparatus which is miniaturized by modulating video, caption, accompaniment music, voice, etc. into a high-frequency signal and outputting wirelessly is provided, and a small-sized video-song accompaniment apparatus is mounted in a wireless microphone, so that it is easy to carry and install the apparatus, and therefore, the atmosphere of karaoke hall can be created in any place where there are tv, audio equipment, FM radio, transmitter, etc., and a portable video-song accompaniment apparatus which is integrated with a wireless microphone and has a reduced price has been developed.

However, when the wireless microphone is integrally formed with the video-song accompaniment apparatus and the miniaturized video-song accompaniment apparatus is installed in the wireless microphone, the following problems may occur:

1. because the control button is arranged in the wireless microphone, when one sings, the other person can not order the next song, and after the singing is needed, the next song can be ordered immediately, which is more complicated.

2. The image, caption, accompaniment music and sound signals modulated by the wireless microphone at high frequency are transmitted to the television, the sounder, the FM radio, the transmitter and the like, and noise is generated between the antenna of the wireless microphone and the television, the sounder, the FM radio and the transmitter, such as a person or an obstacle, and the played image is unstable, and the same problem may be caused due to the different postures of the singer and the different angles of the microphone.

3. If the size and weight of the wireless microphone exceed certain limits, the use of the wireless microphone is lost, and the power source of the wireless microphone and the built-in video-song accompaniment machine has to use a small-capacity alkaline battery.

Therefore, the small-capacity battery used by the integrated portable video-song accompaniment apparatus with wireless microphone can only be used for about two to three hours, and needs to be replaced frequently, which causes inconvenience.

4. The user can transfer the microphones to each other, and the microphones fall to the ground carelessly, so that the impact caused by the carelessness easily causes the malfunction of the high-price image-song accompaniment machine arranged in the wireless microphone.

5. In addition to the accompaniment tracks already installed, if another accompaniment track is to be added, only the expensive semiconductor memory sold by the producing company can be selected, and the other memories have no compatibility, so that it is practically difficult to add the accompaniment tracks. In case the production company is closed backwards it will be impossible to add a track.

6. Since the image and caption data are built in the expensive semiconductor memory, the memory capacity is small, and it is not easy to provide various background images according to the atmosphere of different music.

Disclosure of Invention

Therefore, an object of the present invention is to provide a portable video-song accompaniment apparatus which mixes an audio signal inputted from a wireless or wired microphone, a video signal inputted from an external video apparatus, a VCD or a semiconductor memory, a caption signal inputted from the external video apparatus, the VCD or the semiconductor memory, and an accompaniment music signal inputted from the VCD or the semiconductor memory, modulates the mixed signals into a high-frequency signal, and transmits the high-frequency signal in a wireless form or outputs the high-frequency signal in a wired form.

A portable video-song accompaniment apparatus for both wireless and wired use using a VCD according to a first aspect of the present invention reproduces video, caption and accompaniment music from a semiconductor memory and a CD, the semiconductor memory storing therein video data, caption data and accompaniment music data, respectively; the CD is stored with the image data, the caption data and the accompaniment music data respectively, and is characterized by comprising: VCD controller, decode the video data, subtitle data and accompaniment music data of the above-mentioned CD, replay it to output; a PLC/FPGA controller for decoding the image data, caption data and accompaniment music data of the semiconductor memory and outputting them; a sound signal selector for mixing and outputting the accompaniment music signal and the sound signal output from the VCD controller or the PLC/FPGA controller; a video signal selector for mixing and outputting the image signal and caption signal output from the VCD controller or PLC/FPGA controller; a system controller for selectively controlling the operation of one of the VCD controller and the PLC/FPGA controller and controlling the audio signal selector and the video signal selector; a button input unit for inputting user's command to the system controller; a wireless microphone for wirelessly transmitting a part of the user's command and the user's voice to the system controller; a control signal detection demodulator for detecting and demodulating a command signal of a user from the wireless microphone and outputting the demodulated command signal to the system controller; a voice variable FM reception demodulator for processing the voice signal of the user into a reception signal of a transmission frequency separated from a surrounding disturbance radio wave by a predetermined frequency when the voice signal is inputted through a wireless microphone; a sound detector provided between the sound variable FM reception demodulator and the VCD controller or the PLC/FPGA controller, for supplying the sound signal demodulated by the sound variable FM reception demodulator to the VCD controller or the PLC/FPGA controller; a TV wireless transmitter for modulating the signals mixed by the audio signal selector and the video signal selector into high frequency signals and transmitting the high frequency signals to the outside; a variable FM sound transmitter connected to an output terminal of the sound signal selector, for variably modulating a sound signal into an FM signal having a transmission frequency separated from a surrounding harmful electric wave by a predetermined frequency, and outputting the FM signal; a television transmission antenna for transmitting the high frequency signal modulated by the television wireless transmitter through the air; a sound transmitting/receiving antenna for transmitting the FM high frequency signal of the variable FM sound transmitter through the air or receiving the control command transmitted from the wireless microphone; a display for displaying the operation states of the system controller and the VCD controller or the PLC/FPGA controller to a user; and a television RF modulator for modulating the signal mixed by the audio signal selector and the video signal selector into a high-frequency signal for television and transmitting the signal in a wired form.

A second aspect of the present invention is characterized in that the VCD controller includes: an MPEG manipulator for outputting accompaniment music, voice, video, caption signals CDP controller of the CD and the voice detector according to the control signal inputted from the system controller, and driving the CD according to the control signal inputted from the MPEG manipulator: a high-frequency amplification automatic controller for amplifying and outputting the signal inputted from the box cabin by using the CDP controller; a driver for driving the motor of the cartridge according to the driving signal inputted by the high-frequency amplification automatic controller; an optical disk playing cabin for selecting data from the CD according to the driving signal input by the high-frequency amplification automatic controller; a digital signal processor for converting the signal inputted from the high frequency amplification automatic controller into a digital signal and outputting the digital signal to an MPEG decoder, and decoding accompaniment music, video and caption signals based on the signal inputted from the digital signal processor; a memory for temporarily storing the decoded data by the MPEG decoder; a video D/A encoder for converting the image and caption signals inputted from the MPEG decoder into analog signals and outputting the analog signals; a karaoke manipulator for mixing and outputting the accompaniment music signal inputted from the MPEG decoder and the voice signal inputted from the microphone; a digital/analog converter for converting the signal inputted from the karaoke controller into an analog signal and outputting the analog signal; and an audio filter for filtering and outputting the signal inputted from the digital/analog converter.

A third aspect of the present invention is characterized in that the PLC/FPGA controller includes: a PLC/FPGA controller for deriving and transmitting image and caption data from the semiconductor memory according to a control signal inputted from the system controller; a video processor for outputting image, caption data and control signals from the PLC/FPGA controller; a video decoder for decoding and outputting the image and caption data inputted by the video processor; a video memory connected to the video decoder; a sync signal separator for separating a sync signal from the video signal inputted from the video decoder and outputting the sync signal; a video encoder for encoding and outputting a video signal inputted from the video decoder; an intermediate interface for managing a sound source signal according to a control signal inputted from the PLC/FPGA controller; a PCM data storage for storing data for pulse code modulation; an audio digital/analog signal processor for performing pulse code modulation on the accompaniment music signal of the semiconductor memory derived according to the control signal inputted from the intermediate interface according to the signal of the PCM data storage and outputting the accompaniment music signal; a digital/analog signal converter for converting the signal inputted from the audio digital/analog signal processor into an analog signal and outputting the analog signal; and a buffer filter for filtering and outputting the signal inputted from the digital/analog converter.

A fourth aspect of the present invention is characterized by further comprising: the card board is connected to the PLC/FPGA controller of the PLC/FPGA controller, at least one memory is arranged on the card board, at least one piece of accompanying music and lyric auxiliary data is stored in the memory, and the accompanying music and lyric are output to the connector according to the selection of a user; and a card board insertion slot which is arranged between the PLC/FPGA manipulator and the card board, accommodates the connector of the card board and is electrically connected with the connector.

A fifth aspect of the present invention is characterized in that the variable FM sound transmitter includes: a frequency oscillator emitting a reference frequency; a PLL for dividing the oscillation frequency of the frequency oscillator by a predetermined period corresponding to the channel selection of the user, comparing the divided frequency with the feedback frequency, and outputting a voltage; a voltage controller for controlling the output voltage of the PLL device to be output after being influenced by the surroundings to the minimum; a voltage controlled oscillator for outputting a frequency signal corresponding to an output signal of the voltage controller; a radio frequency amplifier for amplifying an output signal of the voltage controlled oscillator and feeding the amplified output signal back to the PLL; and a transmission output unit for modulating the video signal, the song accompaniment music signal and the audio signal into the oscillation frequency of the voltage controlled oscillator and transmitting the modulated signals via an audio transmitting/receiving antenna.

A sixth aspect of the present invention is characterized in that the voice variable FM reception demodulator includes: a frequency oscillator emitting a reference frequency; a PLL for dividing the oscillation frequency of the frequency oscillator by a predetermined period corresponding to a user's channel selection and outputting a voltage; a voltage controller for controlling the output voltage of the PLL unit to be minimally affected by the surrounding environment and outputting the controlled output voltage; a local oscillator for outputting a specific high-frequency signal corresponding to an output signal of the voltage controller; a first radio frequency amplifier for amplifying an output signal of the local oscillator and applying the amplified output signal to the PLL; a second radio frequency amplifier for amplifying and outputting a sound signal transmitted from the wireless microphone when the sound signal is received by the sound transmitting/receiving antenna, thereby improving sensitivity; a mixer for mixing and detecting output signals of the second radio frequency amplifier and the local oscillator to output an audio medium wave signal; a medium wave amplifier for amplifying the output signal of the mixer and outputting the amplified signal; and a detector for demodulating and outputting the output signal of the medium wave amplifier.

A seventh aspect of the present invention is characterized in that the PLL device includes: a first frequency divider that divides an output frequency of the frequency oscillator by a predetermined period; a second frequency divider for dividing the frequency of the output signal of the radio frequency amplifier by a predetermined period and outputting the divided frequency; a comparison output device for comparing the output frequency of the first frequency divider and the output frequency of the second frequency divider and outputting corresponding signals; and a voltage follower for outputting a voltage corresponding to an output signal of the comparison follower.

An eighth aspect of the present invention is characterized in that the PLL device includes: a first frequency divider that divides an output frequency of the frequency oscillator by a predetermined period; a second frequency divider for dividing the frequency of the output signal of the first radio frequency amplifier by a predetermined period and outputting the divided frequency; a comparison output device for comparing the output frequency of the first frequency divider and the output frequency of the second frequency divider and outputting corresponding signals; and a voltage follower for outputting a voltage corresponding to an output signal of the comparison follower.

A ninth aspect of the present invention is a portable video-song accompaniment apparatus for both wireless and wired use using a VCD, for reproducing video, caption and accompaniment music from a CD storing video data, caption data and accompaniment music data, respectively, comprising: VCD controller, decode the video data and subtitle data and accompaniment music data of the above-mentioned CD, and replay it and output; an audio signal selector for mixing and outputting the accompaniment music signal and the audio signal output from the VCD controller; a video signal selector for mixing and outputting the image signal and caption signal outputted from the VCD controller; a system controller for controlling the VCD controller, the audio selector and the video selector; a button input unit for inputting user command to the system controller; a wireless microphone for wirelessly transmitting a part of the user's command and the user's voice to the system controller; a control signal detection demodulator for detecting and demodulating a command signal of a user from the wireless microphone and outputting the demodulated command signal to the system controller; a variable-frequency FM reception demodulator for variably modulating the user's voice signal into a reception signal of a transmission frequency separated from a disturbing radio wave of the surrounding by a predetermined frequency, when the voice signal is inputted through a wireless microphone; a sound detector provided between the sound variable FM reception demodulator and the VCD controller, for supplying the sound signal demodulated by the sound variable FM reception demodulator to the VCD controller; a television wireless transmitter for modulating the signals mixed by the audio signal selector and the video signal selector into high frequency signals and transmitting the high frequency signals to the outside; a variable FM sound transmitter connected to an output terminal of the sound signal selector, for variably modulating a sound signal into an FM signal having a transmission frequency separated from a surrounding harmful electric wave by a predetermined frequency, and outputting the FM signal; a television transmission antenna for transmitting the high frequency signal modulated by the television wireless transmitter in the air; and a sound transmitting/receiving antenna for transmitting the FM high frequency signal of the variable FM sound transmitter through the air or receiving the control command transmitted from the wireless microphone.

In a tenth aspect of the present invention, there is provided a wired/wireless portable video-song accompaniment apparatus using a semiconductor memory for reproducing video, caption and accompaniment music from the semiconductor memory for respectively storing video data, caption data and accompaniment music data, comprising: a PLC/FPGA controller for decoding the image data, caption data and accompaniment music data of the semiconductor memory and outputting them; a sound signal selector for mixing and outputting the accompaniment music signal and the sound signal output by the PLC/FPGA controller; a video signal selector for mixing and outputting the image signal and caption signal output by the PLC/FPGA controller; a system controller for controlling the VCD controller, the video selector and the audio selector; a button input unit for inputting user command to the system controller; a wireless microphone for wirelessly transmitting a part of the user's command and the user's voice to the system controller; a control signal detection demodulator for detecting and demodulating a command signal of a user from the wireless microphone and outputting the demodulated command signal to the system controller; a variable-frequency FM reception demodulator for variably modulating the user's voice signal into a reception signal of a transmission frequency separated from a surrounding disturbing radio wave by a predetermined frequency, when the user's voice signal is inputted through a wireless microphone; a sound detector provided between the sound variable FM reception demodulator and the PLC/FPGA controller, for supplying the sound signal demodulated by the sound variable FM reception demodulator to the PLC/FPGA controller; a television wireless transmitter for modulating the signals mixed by the audio signal selector and the video signal selector into high frequency signals and transmitting the high frequency signals to the outside; a variable FM sound transmitter connected to an output terminal of the sound signal selector, for variably modulating a sound signal into an FM signal having a transmission frequency separated from a surrounding harmful electric wave by a predetermined frequency, and outputting the FM signal; a television transmission antenna for transmitting the high frequency signal modulated by the television wireless transmitter through the air; and a sound transmitting/receiving antenna for transmitting the FM high frequency signal of the variable FM sound transmitter through the air or receiving the control command output by the wireless microphone.

The portable video-song accompaniment apparatus prevents the above-mentioned transmission frequency and reception frequency from being interfered by the transmission and reception frequencies generated by other apparatuses. And make the accompaniment sound data and lyric data easy to add, delete or exchange.

The above and other objects, features and advantages of the present invention will be described in detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a block diagram showing a portable video-song accompaniment apparatus according to the present invention.

FIG. 2 is a block diagram of a VCD controller of the portable video-song accompanist in accordance with the present invention.

FIG. 3 is a block diagram showing a PLC/FPGA controller of the portable video-song accompaniment apparatus according to the present invention.

FIG. 4 is an explanatory view of the card board of FIG. 3 on which the audio data memory is arranged;

FIG. 5 is an exploded perspective view of the card of FIG. 4 mounted on the video-song accompaniment apparatus of the present invention.

Fig. 6 is a block diagram illustrating the variable FM sound transmitter of fig. 1.

Fig. 7 is a block diagram illustrating the sound FM reception demodulator of fig. 1.

Detailed Description

Referring to fig. 1 showing an embodiment of the present invention, the portable song accompaniment apparatus of the present invention comprises a main board electrically connecting a large number of components, the main board having a system controller 20 for generally controlling the functions of the system; a sound detector 30 for detecting a sound signal according to a switching control action of the system controller 20; a VCD controller 40 for reproducing the video signal in accordance with the control signal from the system controller 20; a PLC/FPGA controller 50 for outputting a related image and caption signal stored in the video semiconductor memory and outputting an accompaniment signal stored in the audio semiconductor memory according to the control signal of the system controller 20; a video selector 60 for selecting one of the external video signal line, the VCD controller 40 and the image signal of the PLC/FPGA controller 50 according to the selection switch signal of the system controller 20, mixing the selected signal with the caption, and outputting the mixed signal; an audio selector 70 for selecting one of the external audio signal line, the VCD controller 40, and the accompaniment music signal of the PLC/FPGA controller 50 according to the selection switch signal of the system controller 20, mixing the selected signal with the audio signal of the user, and outputting the mixed signal; a tv RP modulator 90 connected to the output terminals of the video selector 60 and the audio selector 70, for modulating the video, caption, accompaniment music and audio signals of the user into channel signals of the tv and then outputting the channel signals; a wireless television transmitter 100 for modulating the output signals of the video selector 60 and the audio selector 70 and transmitting them in a wireless manner; a variable FM sound transmitter 120 for converting the sound signal connected to the output terminal of the sound selector 70 into an FM signal having a transmission frequency separated from the surrounding interfering waves by a predetermined frequency and outputting the FM signal; a sound variable FM reception demodulator 150 that processes the sound signal of the user into a reception signal of a transmission frequency separated from the surrounding harmful radio waves by a predetermined frequency, when the sound signal is inputted through the wireless microphone 140; and a control signal detection demodulator 160 for receiving and processing the control signal of the wireless microphone 140.

A Switch (SW) for switching each audio signal in accordance with a switching control signal of a system controller 20 is connected to one end of the audio detector 30, the wired microphone, and the audio variable FM reception demodulator 150, a button input device 10 for inputting a function setting signal of a user is connected to one end of the system control section 20, and an earphone amplifier 80 is connected to an output end of the audio selector 70. The output terminal of the television radio transmitter 100 is connected to the transmitting antenna 110, one terminal of the variable FM sound transmitter 120 is connected to the sound transmitting/receiving antenna 130, and the output terminals of the system controller 20, the VCD control unit 40, and the PLC controller 50 are connected to the display 170 for displaying the operation state of the inside of the system to the outside.

Here, the sound variable FM reception demodulator 150 and the control signal detection demodulator 160 receive a signal of the wireless microphone 140 in a wireless manner via the antennas 110 and 130, a plurality of control buttons for controlling the system in a wireless manner are provided on a part of the body of the wireless microphone 140, the button input unit 10 is configured by buttons (not shown) for setting functions such as start, pause, still, speed adjustment, high/low tone adjustment, continuation, return, and the like, and the wireless microphone 140 is provided with a basic function button (not shown) for operating the karaoke hall.

The display unit 170 is formed of a Liquid Crystal Display (LCD) and is divided into a portion for showing an operation state of the VCD controller 40 and a portion for showing an operation state of the PLC/FPGA controller 50.

As shown in fig. 2, which shows an embodiment of the present invention, the VCD controller 40 of the portable video-song accompaniment apparatus of the present invention is composed of the following components: an MPEG manipulator 41 for outputting accompaniment music, audio, video, and caption signals of the CD and the audio detector 30 in accordance with a control signal inputted from the system controller 20; a CDP manipulator 42 for driving CD according to the control signal inputted by the MPEG manipulator 41; a high-frequency amplification automatic controller 43 for amplifying and outputting the signal inputted from the cassette magazine by the CDP manipulator 42; a driver 44 for driving the cartridge motor according to the driving signal inputted from the high-frequency amplification automatic controller 43; an optical disc playing chamber 45 for selecting data from the CD according to the driving signal inputted from the high frequency amplification automatic controller 43; a digital signal processor 46 for converting the signal inputted from the high frequency amplification automatic controller 43 into a digital signal and outputting the digital signal; an MPEG decoder 47 for decoding accompaniment music, video, and caption signals based on the signals inputted from the digital signal processor 46; memories 48, 49 for temporarily storing the decoded data according to the MPEG decoder 47; a video D/A encoder 4A for converting the image and caption signals inputted from the MPEG decoder 47 into analog signals and outputting the analog signals; a karaoke manipulator 4B for mixing and outputting the accompaniment music inputted from the MPEG decoder 47 and the audio signal inputted from the wireless microphone 140; a digital/analog converter 4C for converting the signal inputted from the karaoke controller 4B into an analog signal and outputting the analog signal; an audio filter 4D for filtering the signal inputted from the digital/analog converter 4C and outputting the filtered signal.

As shown in fig. 3, which shows an embodiment of the present invention, the PLC/FPGA manipulator 20 of the portable video-song accompaniment apparatus of the present invention is composed of: a PLC/FPGA controller 52 for reading and transferring the image/caption data stored in the image/caption memory according to the control signal of the system controller 50, a video processor 53 for processing the image/caption data of the PLC/FPGA controller 52 and the control signal together, a video decoder 55 for decoding the image/caption data according to the output signal of the video processor 53, a synchronizing signal separator 56 for separating the synchronizing signal from the video signal of the video decoder 55, a video encoder 57 for encoding and outputting the video signal of the video decoder 55, an intermediate interface 58 for synthesizing and processing the power signal according to the control signal of the PLC/FPGA controller 59, a sound data memory 5A for storing accompaniment music data, the intermediate interface 58 and the PCM data memory 59 being connected to the sound data memory 5A, an audio digital signal processor 5B for modulating accompaniment music data into pulse codes by a signal from a PCM data storage 59 according to a control signal from an intermediate interface 58, an input terminal connected to an output terminal of the audio digital signal processor 5B, a D/A converter 5C for modulating a digital signal into an analog signal, and a buffer filter 5D for filtering a signal inputted from the D/A converter 5C connected to an output terminal of the D/A converter 5C.

Moreover, the PLC/FPGA control part 50 is not provided with a sound data memory, and on the terminal, the sound data memory for storing the exchange and supplement of accompaniment music and lyric data is upgraded as follows according to the music mode required by the user or the music mode classified by the generation;

in order to connect the audio data memory 185 of the PLC/FPGA controller 50 to the terminal of the bit to be installed, the card insertion slot 190 of the card 180 of the audio data memory 185 storing the accompaniment music signal for additional use and the lyric data for additional use is installed, and the structure for enabling electrical contact can be provided.

At this time, the accompaniment music signals and lyric data are outputted to the main board through the audio data memory 185 of the card board 180 and the card board insertion slot 190, and the main board is disposed on the same board as the components shown in the figure and has electrical contacts.

As shown in fig. 6, the variable FM sound transmitter 120 includes the following components:

a frequency oscillator 210 for generating a reference frequency, a PLL 220 for dividing the oscillation frequency of the frequency oscillator 210 by a predetermined period corresponding to the channel selection of a user and comparing the divided frequency with a feedback frequency to output a voltage, a voltage controller 230 for controlling the output of the PLL 220 so that the output voltage is minimally affected by the surrounding environment, a voltage controlled oscillator 240 for outputting a frequency signal corresponding to the output signal of the voltage controller 230, a radio frequency amplifier 250 for amplifying the output signal of the voltage controlled oscillator 240, a video signal, a song accompaniment music signal, and a sound signal, which are fed back from the PLL 220, and a transmission output unit 260 for outputting the video signal, the song accompaniment music signal, and the sound signal as the oscillation frequency of the voltage controlled oscillator 240 through a sound receiving and transmitting antenna 130.

As shown in fig. 8, the above-described sound variable FM reception demodulator 150 includes the following components:

a frequency oscillator 310 for generating a reference frequency, a PLL 320 for outputting a voltage according to an oscillation frequency of the frequency oscillator 310 and a feedback frequency, a voltage controller 330 for controlling an output by minimizing an influence of the surrounding on an output voltage of the PLL 320, a local oscillator 340 for outputting a specific frequency signal corresponding to an output signal of the voltage controller 330, a first radio frequency amplifier 350 for amplifying the output signal of the local oscillator 340 and transmitting the amplified output signal to the PLL 320, a mixer 370 for mixing and detecting an output signal of the second radio frequency amplifier 360 and the local oscillator 340 to output an audio medium signal when an audio signal emitted from a radio microphone 140 is received by an audio receiving and transmitting antenna 130 to increase sensitivity, a medium amplifier 380 for amplifying and outputting the output signal of the mixer 370, and a demodulator 380 for outputting the medium amplifier 380 A detector 390 for outputting a signal.

Here, the PLL devices 220 and 320 include the following components:

first frequency dividers 221 and 321 for dividing the output frequencies of the frequency oscillators 210 and 310 by a predetermined period, second frequency dividers 222 and 322 for dividing the output signals of the radio frequency amplifiers 250 and 350 by a predetermined period, comparison output devices 223 and 323 for comparing the output frequencies of the first frequency dividers 221 and 321 and the second frequency dividers 222 and 322 with the output signals, and voltage output parts 224 and 324 for outputting voltages corresponding to the output signals of the comparison output devices 223 and 323.

According to an embodiment of the present invention, the portable video-song accompaniment apparatus functions as follows:

when the power is first introduced, the video-song accompaniment apparatus with both wired and wireless functions using the VCD is activated according to the implementation of the present invention.

After the start, the user selects one of the CD mode and the computer mode by using the button input device 10 provided on the operation front panel of the main body or the button provided on the wireless microphone 140 to select a song, inputs a start command, and then the system control part 20 controls the VCD controller 40 or the PLC/FPGA controller 50, so that the image, the caption, the accompaniment music, and the sound are outputted from the main body through the VCD controller 40 or the PLC/FPGA controller 50.

In this case, the command signal inputted to the wireless microphone 140 via the control button is demodulated via the audio reception/transmission antenna 130 and the control signal detection demodulator 160, and then outputted to the system controller 20.

In addition, the system controller 20 generates and outputs data for generating an On Screen Display (OSD) among the control commands input from the button input device 10 or the wireless microphone 140.

If the CD mode is set, the system controller 20 controls the path of the ON/OFF Switch (SW), and the sound signal inputted from the wireless microphone is outputted from the VCD controller 40 via the ON/OFF Switch (SW) and the sound detector 30, or the sound signal inputted from the wireless microphone 140 is outputted from the VCD control section 40 via the sound reception/transmission antenna 130, the sound variable FM reception demodulator 150, and the ON/OFF switch 30.

The VCD controller 40 reproduces the video signal and caption signal stored in the CD under the control of the system controller 20, and outputs the reproduced video signal and caption signal from the audio selector 60, and outputs the audio signal inputted from the audio detecting section 30 together with the associated accompaniment music signal stored in the CD from the audio selector 70.

Referring to the second diagram accompanying the operation of the VCD control section 40 described above, the sections are described in more detail as follows:

the control signal is inputted from the system controller 20, and the MPEG manipulator 41 outputs the control signal with the CDP manipulator 42, thereby compressing the stored image on the CD. The caption accompanying music is output.

In this case, the CDP manipulator 42 controls the driver 44 via the high frequency amplification automatic controller 43 to rotate the motor of the optical disc playing bay. Thus, after the motor of the optical disc player 45 is rotated, the signal (MPEG signal) compressed by the CD is outputted from the MPEG decoder 47 via the selection and high frequency amplification automatic controller 43 and the digital signal processor 46.

The MPEG decoder 47, which is operated by the digital signal processor 46, stores the compressed signal in the memories 48, 49 and decodes it, the accompaniment music signal is outputted from the karaoke manipulator 4B, and the video and caption signals are outputted from the video D/A encoder 4A.

The karaoke manipulator (4B) mixes the microphone audio signal inputted from the audio detector 30 and the accompaniment music signal inputted from the MPEG decoder 47, adjusts the level of the accompaniment music according to the control signal inputted from the MPEG manipulator 41 and outputs the accompaniment music and the audio signal through the audio filter by the digital/analog converter 4C.

The video D/A encoder 4A converts the video and caption signals inputted from the MPEG decoder 47 into analog signals and outputs the analog signals.

However, when the computer system is set, the system controller 20 controls the path of the ON/OFF Switch (SW), and the audio signal input from the wired microphone is output from the PLC/FPGA controller 50 through the ON/OFF Switch (SW) and the audio detector 30, or the audio signal input from the wireless microphone 140 is output from the PLC/FPGA controller through the audio receiving/transmitting antenna 130 and the audio variable FM receiving demodulator 150 through the ON/OFF Switch (SW) and the audio detector 30.

The PLC/FPGA controller 50 reads out the video signal and the caption signal stored in the semiconductor memory according to the control of the system controller 20, and outputs the video signal and the accompaniment music signal stored in the semiconductor memory from the video selector 60 and the audio signal selector 70.

Referring to FIG. 3 with the above actions of the PLC/FPGA controller 50 attached, the parts are described in more detail as follows:

the system control part 20 inputs control signals, and the PLC/FPGA controller 52 reads out relevant image and caption data from the image/caption memory 51, and outputs control signals to operate the intermediate interface in synchronization with the read-out of the relevant image and caption data while transmitting the data from the video processor.

Since the intermediate interface 58 controls the audio digital signal processor 5B, the accompaniment music data stored in the audio data memory 5A is modulated into pulses in a manner provided by the PCM data 59 to be outputted from the digital/analog converter 5C.

The digital/analog converter 5C converts the signal inputted from the audio digital signal processor 5B into an analog signal, and outputs the analog signal as an accompaniment signal via a buffer 5D.

The video processor 53 decodes the video and caption signals input from the PLC/FPGA controller 52 by the video decoder 55, separates the synchronizing signals by the synchronizing signal separator 56, and encodes the signals by the video encoder 57 to output the signals as video/caption signals. Meanwhile, the video processor 53 measures the singing level of the user (based on whether the tempo of the caption displayed corresponds to the tempo inputted by the audio signal) using the microphone audio signal inputted from the audio detector 53, and outputs an information signal from the video memory 54 according to the measurement result to display the score on the tv screen.

The video selector 60 tunes to a CD mode or a computer mode state according to a control command of the system controller 20, selects an external image signal and an image signal inputted from the VCD controller 40, and one of the image signals inputted from the PLC/FPGA controller 50, mixes with a caption signal, and outputs the mixed signal from the tv RF modulator 90, the tv radio transmitter 100, and a line image output signal cable, respectively.

The external video signal is a signal inputted from an external video device, such as a Laser Disc Player (LDP), a Video Tape Recorder (VTR), a camera (CCD), etc., and particularly, when the external video device (CCD camera) is connected, the image of the external video signal is displayed on a television screen, so that the external video signal can enjoy singing while watching the image of the external video signal.

Furthermore, the audio selector 70 is also tuned to the CD state or the computer state according to the control command of the system controller 20, and such an external audio signal and the accompaniment music signal inputted from the VCD controller 40, or one of the accompaniment music signals inputted from the PLC/FPGA controller is mixed with the audio signal and then outputted to the tv RF modulator 90, the tv radio transmitter 100, the variable FM sound transmitter 120, the headphone amplifier 80, and the line sound output signal cable.

The tv RF modulator 90 tunes the video signal and the caption signal inputted from the video selector 60 and the accompaniment music and audio signal inputted from the audio selector 70 to the tv channels 3 and 4 and outputs them, so that the tv (not shown) outputs the video caption, the accompaniment music and the singing voice.

The wireless tv transmitter 100 modulates the video and caption signals input from the video selector 60 and the accompaniment music and audio signals input from the audio selector 70 into high frequency signals, and broadcasts them over the air via the transmitting antenna 110, so that the video and caption signals, the accompaniment music and the singing voice are output from specific channels (except 3 and 4 channels) on a tv (not shown).

The variable FM sound transmitter 120 modulates the accompaniment music and the sound signal inputted from the sound selector 70 into an FM high frequency signal, and transmits the FM high frequency signal through the sound receiver/transmitter antenna 130. Accordingly, the accompaniment music and singing voice are outputted from a specific frequency band of an FM radio receiver (not shown).

The headphone amplifier 80 amplifies and outputs the accompaniment music and the audio signal inputted from the audio signal selector 70. The accompanying music singing voice is thus output from headphones (not shown).

When the line audio output signal cable and the line video output signal cable are connected to an external device (not shown), the external device outputs accompaniment music and singing voice together with video and subtitles. At this time, the image of the camera is displayed on the screen, and when the video recorder connected with the external machine records the video, the image and the sound of singing are recorded together, so that the user can repeatedly replay and watch the attitude, accuracy, biting, feeling and the like of singing, and after comprehensive discussion, the singing is more effective.

The display 170 displays the operation of the video-song accompaniment apparatus according to the control signals and data signals inputted from the system controller 160, the VCD controller 40 and the PLC controller 50.

In addition, in order to add new songs to the PLC/FPGA controller 50on the main board 159, when the audio data storage 185 is not pressed in the PLC/FPGA controller 50, the user inserts the card insertion slot 190 in the empty part of the battery pack of the main body, and arranges a plurality of cards 180 having the audio data storage 185 storing the desired accompaniment music signals and lyric data. The card 18 can be alternated later to allow the user to simply add and alternate the accompaniment music and lyrics of the other audio data memory 185 as needed. At this time, thousands of songs can be basically stored in the audio data memory 185, so that only the operation of the main board 195 cannot accompany the music signal output.

As described above, since the song accompaniment music signal and the lyric data are not contained in the product, the copyright royalty is not included in the price of the product, and thus the price of the product is lowered.

Some output connectors of the card board insertion slot 190 are connected to the audio digital signal processor 5B in the PLC/FPGA controller 50 through an interface portion of the main board 195, and when a user inserts the card board 180 into the card board insertion slot 200 and operates the button input device 10 to select a song to be sung, the accompanying music signal and the lyric data stored in the audio data memory 185 in the card board 180 are read by the audio digital signal processor 5B under the control of the system controller 20 through the card board insertion slot 200 to be output as an accompanying music signal.

Also, the audio data memory 185 in the card 180 can store various music signals according to singers, ages, subjects, countries, etc. Therefore, the user only needs to buy the card board 180 storing the desired song and insert the card board insertion slot 190.

On the other hand, a user may purchase another card to add a desired song, and since the card board 180 has several command counter sockets, the command counter storing the desired song may be inserted into the command counter socket, or a desired song may be added. In this case, the audio data storage generally uses an index memory.

The invention can be applied to all song accompaniment machines such as 'portable type accompaniment machine for playing songs/wireless (including microphone type)' or 'delayed type accompaniment machine for playing songs (including audio signal amplification type)', when the invention is used for the 'portable type accompaniment machine for playing songs/wireless (including microphone type)', only the card insertion slot is needed to be pressed at the empty position of the battery insertion part to enable the card and the main board to be an interface, when the invention is used for the 'delayed type accompaniment machine for playing songs (audio signal amplification type)', only the panel part positioned on the main board needs to be opened and closed, and the card insertion slot is arranged at the empty position to enable the card and the main board to be the interface.

In order to explain the operation of the variable FM sound transmitter 200, a specific reference frequency for achieving phase control, i.e., stable frequency control oscillation, is output from the frequency oscillator 210.

When the reference frequency oscillates on the frequency oscillator 210, the 1 st frequency divider 221 divides the output frequency of the frequency oscillator by a specific division value selected by the user and outputs the divided frequency.

The comparison output unit 233 compares the signal output from the 1 st frequency divider 221 with the signal fed back from the 2 nd frequency divider 222 as a reference value, outputs a control signal for increasing the voltage to the "+" terminal by the difference between the signals when the control signal is output and the fed back signal value is a little smaller than the reference value, and outputs a control signal for increasing the voltage to the "-" terminal by the difference between the signals when the signal value fed back is a little larger than the reference value.

As described above, when the comparison value is outputted from the comparison output unit 223, the voltage output unit 224 outputs a voltage in accordance with the control signal of the comparison output unit 223, and the voltage controller 230 receives the output signal of the voltage output unit 224 and transmits the received signal to the voltage controlled oscillator 240 in order to minimize the influence of the surrounding environment.

The voltage controlled oscillator 240 is an oscillation frequency circuit, and outputs an oscillation frequency corresponding to the output signal of the voltage controller 230, and transmits the oscillation frequency to the transmission output unit 260 and the radio frequency amplifier 250.

The radio frequency amplifier 250 amplifies the oscillation frequency of the vco 240 and outputs the amplified oscillation frequency, and the 2 nd frequency divider 222 divides the frequency of the output signal of the radio frequency amplifier 250 by a predetermined period and transmits the divided frequency to the comparison output 223.

In other words, the PLL 220 compares the reference frequency inputted from the frequency oscillator 210 with the oscillation frequency of the voltage controlled oscillator 240 by the 1 st frequency divider 221, the 2 nd frequency divider 222, the comparison output 223, and the voltage output 224, and controls the frequency so as to form a stable frequency that is not affected by the resistance and the accumulation (R, C; not shown) on the printed circuit board that forms a loop due to the electronic components.

As described above, when the stable frequency is outputted through the vco 230, the transmission output unit 260 modulates the audio signal of the audio signal selector 70 in fig. 1 into the FM frequency generated by the vco 230, and transmits the FM frequency through the audio receiving and transmitting antenna 130.

The wireless signal (air wave) transmitted by the audio receiving/transmitting antenna 130 is output via an external audio device located at a specific distance. In this case, since the audio device is generally tuned to an FM frequency of 98.3MHz band, it may be mixed with a radio broadcasting frequency according to a local situation.

As described above, when the portable video song accompaniment is used by other audio devices, if the accompaniment is mixed with any other broadcasting frequency, the body button input device 10 can be used to increase or decrease the frequency channel.

As described in detail, the reference transmission frequency of 98.3MHz is increased or decreased by the body button input unit 10 to be converted into a maximum of 16 channels. As described above, when changing channels, the system controller 20 outputs a channel selection signal corresponding to the selected channel.

The channel selection signal outputted from the system controller 20 is transmitted to the 1 st frequency divider 221 of the PLL 220, and the first frequency divider 221 divides the reference frequency of the frequency oscillator 210 into frequencies corresponding to the converted channels.

As described above, when the frequency at which the reception and transfer are most easily performed is selected after the channel change, the song accompaniment apparatus can be used without mixing with other broadcast frequencies.

As described above, the variable FM sound receiving/transmitting device 200 is additionally provided with the wireless microphone 140, and since the wireless microphone 140 generally uses a frequency of 219.3MHz band, when mixing or noise occurs due to any other broadcasting frequency or surrounding environment, it can be clearly transmitted by switching to a maximum of 16 channels with reference to 219.3MHz using the dip switch attached to the external panel.

On the other hand, since the signal output from the wireless microphone 140 is received by the audio receiving/transmitting antenna 130 and transmitted to the audio variable FM receiving/demodulating device 300, the PLL device 320 in the audio variable FM receiving/demodulating device 300 and the PLL device 220 in the variable FM audio receiving/transmitting device 200 operate in the same manner to stabilize the frequency. That is, when the reference frequency is outputted from the frequency oscillator 310, the 1 st frequency divider 321 divides the reference frequency by a division value corresponding to the selection to be used, and outputs the divided reference frequency.

The comparison outputter 323 compares the signal emitted from the 1 st frequency divider 321 with the signal fed back by the 2 nd frequency divider 322 to output a comparison signal, and the voltage outputter 324 outputs a voltage corresponding to the comparison signal emitted from the comparison outputter 323.

As described above, when a specific voltage is outputted from the voltage follower 324, the voltage controller 330 controls the surrounding influence to be minimum and transmits the voltage to the local oscillator 320.

At this time, the local oscillator 340 generates and outputs a high frequency signal corresponding to the input ground voltage, and the high frequency signal is amplified by the 1 st radio frequency amplifier 35, divided by the 2 nd frequency divider 322, and transmitted to the comparison output unit 323. The stable local oscillation frequency is then output.

As described above, when the audio signal emitted from the wireless microphone 140 is received by the audio receiving/transmitting antenna 130 in a state where a stable local oscillation frequency is generated, the 2 nd radio frequency amplifier 360 amplifies the signal to increase the sensitivity, and the mixer 370 mixes the output signal of the 2 nd radio frequency amplifier 360 with the output signal of the local oscillator 340 to output a medium wave signal.

The intermediate wave signal output from the mixer 370 is amplified by an intermediate wave amplifier 380, demodulated by a detector 390 into an original signal, and transmitted to the sound detector 30 via an ON/OFF Switch (SW).

The audio signal transmitted to the audio detector 30 is output through a television, an external audio device, or an earphone via a specific path.

In this case, when the frequency channel is converted by the dip switch in the wireless microphone 140 as described above, since the reception operation of the sound variable FM reception demodulator 300 of the accompaniment machine body should be different, the frequency is converted by the button output device 10 in the same way as the frequency channel converted by the wireless microphone 140.

The system controller 20 transmits the channel selection signal to the 1 st frequency divider 321 in the PLL 320, and controls to divide the frequency to a frequency suitable for the converted channel.

As described above, the present invention provides a portable video-song accompaniment apparatus which is easy to make an appointment, does not generate noise, can be used for a long time due to the use of a large-capacity battery, does not malfunction due to impact, is easy to add songs, and provides various background images.

The portable song accompaniment machine body is provided with another board inserting groove of the audio data memory for storing the song accompaniment music signals and the lyric data, only a card with required songs is purchased and inserted on the portable song accompaniment machine body to practice singing, so the copyright tax is not included in the product price, the product price is reduced, and the portable song accompaniment machine body can be used only by purchasing the card with the required songs and the lyrics, thereby the expense is saved without paying the copyright tax for the unnecessary songs and the lyrics. As described above, since the card with the song accompaniment apparatus product and the music signal is purchased, the cost is reduced. In addition, when the product is exported, foreign users only buy the card board storing the music of each country, so that the cost is reduced, and the benefits of both buyers and sellers are improved.

Since the PLL system is used for wireless transmission between the main body and the audio device and for wireless transmission and reception between the wireless microphone and the main body, the frequency can be stabilized, and when mixing occurs due to other broadcasting signals or surrounding noise, switching to another channel is possible, thereby achieving an effect of preventing mixing.

Claims

1. A kind of video song accompaniment machine of dual-purpose portable/wireless using VCD, replay the video, subtitle and accompaniment music from semiconductor memory and CD, store video data, subtitle data and accompaniment music data in the said semiconductor memory separately; the CD is stored with the image data, the caption data and the accompaniment music data respectively, and is characterized by comprising:

VCD controller, decode the video data, subtitle data and accompaniment music data of the above-mentioned CD, replay it to output;

a PLC/FPGA controller for decoding the image data, caption data and accompaniment music data of the semiconductor memory and outputting them;

a sound signal selector for mixing and outputting the accompaniment music signal and the sound signal output from the VCD controller or the PLC/FPGA controller;

a video signal selector for mixing and outputting the image signal and caption signal output from the VCD controller or PLC/FPGA controller;

a system controller for selectively controlling the operation of one of the VCD controller and the PLC/FPGA controller and controlling the audio signal selector and the video signal selector;

a button input unit for inputting user's command to the system controller;

a wireless microphone for wirelessly transmitting a part of the user's command and the user's voice to the system controller;

a control signal detection demodulator for detecting and demodulating a command signal of a user from the wireless microphone and outputting the demodulated command signal to the system controller;

a voice variable FM reception demodulator for processing the voice signal of the user into a reception signal of a transmission frequency separated from a surrounding disturbance radio wave by a predetermined frequency when the voice signal is inputted through a wireless microphone;

a sound detector provided between the sound variable FM reception demodulator and the VCD controller or the PLC/FPGA controller, for supplying the sound signal demodulated by the sound variable FM reception demodulator to the VCD controller or the PLC/FPGA controller;

a TV wireless transmitter for modulating the signals mixed by the audio signal selector and the video signal selector into high frequency signals and transmitting the high frequency signals to the outside;

a variable FM sound transmitter connected to an output terminal of the sound signal selector, for variably modulating a sound signal into an FM signal having a transmission frequency separated from a surrounding harmful electric wave by a predetermined frequency, and outputting the FM signal;

a television transmission antenna for transmitting the high frequency signal modulated by the television wireless transmitter through the air;

a sound transmitting/receiving antenna for transmitting the FM high frequency signal of the variable FM sound transmitter through the air or receiving the control command transmitted from the wireless microphone;

a display for displaying the operation states of the system controller and the VCD controller or the PLC/FPGA controller to a user;

and a television RF modulator for modulating the signal mixed by the audio signal selector and the video signal selector into a high-frequency signal for television and transmitting the signal in a wired form.

2. The dual-purpose portable video-song accompanist with VCD of claim 1, wherein the VCD controller comprises:

an MPEG manipulator for outputting accompaniment music, voice, video and caption signals of the CD and the voice detector according to a control signal inputted from the system controller;

a CDP controller for driving the CD according to the control signal input by the MPEG manipulator;

a high frequency amplification automatic controller for amplifying and outputting the signal inputted from the box storehouse by the CDP controller;

a driver for driving the motor of the cartridge according to the driving signal inputted by the high-frequency amplification automatic controller;

an optical disk playing cabin for selecting data from the CD according to the driving signal input by the high-frequency amplification automatic controller;

a digital signal processor for converting the signal inputted from the high-frequency amplification automatic controller into a digital signal and outputting the digital signal;

an MPEG decoder for decoding accompaniment music, video and caption signals according to the signals input by the digital signal processor;

a memory for temporarily storing the decoded data by the MPEG decoder;

a video D/A encoder for converting the image and caption signals inputted from the MPEG decoder into analog signals and outputting the analog signals;

a karaoke manipulator for mixing and outputting the accompaniment music signal inputted from the MPEG decoder and the voice signal inputted from the microphone;

a digital/analog converter for converting the signal inputted from the karaoke controller into an analog signal and outputting the analog signal; and

and an audio filter for filtering and outputting the signal inputted from the digital/analog converter.

3. The dual-purpose portable video-song accompanimenter with VCD as set forth in claim 1, wherein the PLC/FPGA controller comprises:

a PLC/FPGA controller for deriving and transmitting image and caption data from the semiconductor memory according to a control signal inputted from the system controller;

a video processor for outputting image, caption data and control signals from the PLC/FPGA controller;

a video decoder for decoding and outputting the image and caption data inputted by the video processor;

a video memory connected to the video decoder;

a sync signal separator for separating a sync signal from the video signal inputted from the video decoder and outputting the sync signal;

a video encoder for encoding and outputting a video signal inputted from the video decoder;

an intermediate interface for managing a sound source signal according to a control signal inputted from the PLC/FPGA controller;

a PCM data storage for storing data for pulse code modulation;

an audio digital/analog signal processor for performing pulse code modulation on the accompaniment music signal of the semiconductor memory derived according to the control signal inputted from the intermediate interface according to the signal of the PCM data storage and outputting the accompaniment music signal;

a digital/analog signal converter for converting the signal inputted from the audio digital/analog signal processor into an analog signal and outputting the analog signal; and

a buffer filter for filtering the signal inputted from the digital/analog converter and outputting the filtered signal.

4. The portable video-song accompaniment apparatus according to claim 1, further comprising:

the card board is connected to the PLC/FPGA controller of the PLC/FPGA controller, at least one memory is arranged on the card board, at least one piece of accompanying music and lyric auxiliary data is stored in the memory, and the accompanying music and lyric are output to the connector according to the selection of a user;

and a card board insertion slot which is arranged between the PLC/FPGA manipulator and the card board, accommodates the connector of the card board and is electrically connected with the connector.

5. The portable video-song accompaniment apparatus according to claim 1, wherein said variable FM sound transmitter comprises:

a frequency oscillator emitting a reference frequency;

a PLL for dividing the oscillation frequency of the frequency oscillator by a predetermined period corresponding to the channel selection of the user, comparing the divided frequency with the feedback frequency, and outputting a voltage;

a voltage controller for controlling the output voltage of the PLL device to be output after being influenced by the surroundings to the minimum;

a voltage controlled oscillator for outputting a frequency signal corresponding to an output signal of the voltage controller;

a radio frequency amplifier for amplifying an output signal of the voltage controlled oscillator and feeding the amplified output signal back to the PLL;

and a transmission output unit for modulating the video signal, the song accompaniment music signal and the audio signal into the oscillation frequency of the voltage controlled oscillator and transmitting the modulated signals via an audio transmitting/receiving antenna.

6. The portable video-song accompaniment apparatus according to claim 1, wherein said audio variable FM reception demodulator comprises:

a frequency oscillator emitting a reference frequency;

a PLL for dividing the oscillation frequency of the frequency oscillator by a predetermined period corresponding to a user's channel selection and outputting a voltage;

a voltage controller for controlling the output voltage of the PLL unit to be minimally affected by the surrounding environment and outputting the controlled output voltage;

a local oscillator for outputting a specific high-frequency signal corresponding to an output signal of the voltage controller;

a first radio frequency amplifier for amplifying an output signal of the local oscillator and applying the amplified output signal to the PLL;

a second radio frequency amplifier for amplifying and outputting a sound signal transmitted from the wireless microphone when the sound signal is received by the sound transmitting/receiving antenna, thereby improving sensitivity;

a mixer for mixing and detecting output signals of the second radio frequency amplifier and the local oscillator to output an audio medium wave signal;

a medium wave amplifier for amplifying the output signal of the mixer and outputting the amplified signal; and

and a detector for demodulating and outputting the output signal of the medium wave amplifier.

7. The portable video-song accompaniment apparatus according to claim 5, wherein said PLL means includes:

a first frequency divider that divides an output frequency of the frequency oscillator by a predetermined period;

a second frequency divider for dividing the frequency of the output signal of the radio frequency amplifier by a predetermined period and outputting the divided frequency;

a comparison output device for comparing the output frequency of the first frequency divider and the output frequency of the second frequency divider and outputting corresponding signals; and

and a voltage follower for outputting a voltage corresponding to the output signal of the comparison follower.

8. The portable video-song accompaniment apparatus according to claim 6, wherein said PLL means includes:

a second frequency divider for dividing the frequency of the output signal of the first radio frequency amplifier by a predetermined period and outputting the divided frequency;

9. A portable video-song accompaniment apparatus for both wireless and wired use using a VCD for reproducing video, caption and accompaniment music from a CD storing video data, caption data and accompaniment music data, respectively, comprising:

VCD controller, decode the video data and subtitle data and accompaniment music data of the above-mentioned CD, and replay it and output;

an audio signal selector for mixing and outputting the accompaniment music signal and the audio signal output from the VCD controller;

a video signal selector for mixing and outputting the image signal and caption signal outputted from the VCD controller;

a system controller for controlling the VCD controller, the audio selector and the video selector;

a button input unit for inputting user command to the system controller;

a variable-frequency FM reception demodulator for variably modulating the user's voice signal into a reception signal of a transmission frequency separated from a disturbing radio wave of the surrounding by a predetermined frequency, when the voice signal is inputted through a wireless microphone;

a sound detector provided between the sound variable FM reception demodulator and the VCD controller, for supplying the sound signal demodulated by the sound variable FM reception demodulator to the VCD controller;

a television wireless transmitter for modulating the signals mixed by the audio signal selector and the video signal selector into high frequency signals and transmitting the high frequency signals to the outside;

a television transmission antenna for transmitting the high frequency signal modulated by the television wireless transmitter in the air; and

and a sound transmitting and receiving antenna for transmitting the FM high-frequency signal of the variable FM sound transmitter in the air or receiving the control command transmitted from the wireless microphone.

10. A wired/wireless portable video-song accompaniment apparatus using a semiconductor memory for reproducing video, caption and accompaniment music from the semiconductor memory for respectively storing video data, caption data and accompaniment music data, comprising:

a sound signal selector for mixing and outputting the accompaniment music signal and the sound signal output by the PLC/FPGA controller;

a video signal selector for mixing and outputting the image signal and caption signal output by the PLC/FPGA controller;

a system controller for controlling the PLC/FPGA controller, the video signal selector and the audio signal selector;

a button input unit for inputting user command to the system controller;

a variable-frequency FM reception demodulator for variably modulating the user's voice signal into a reception signal of a transmission frequency separated from a surrounding disturbing radio wave by a predetermined frequency, when the user's voice signal is inputted through a wireless microphone;

a sound detector provided between the sound variable FM reception demodulator and the PLC/FPGA controller, for supplying the sound signal demodulated by the sound variable FM reception demodulator to the PLC/FPGA controller;

a television transmission antenna for transmitting the high frequency signal modulated by the television wireless transmitter through the air; and

and a sound transmitting and receiving antenna for transmitting the FM high-frequency signal of the variable FM sound transmitter in the air or receiving the control command output by the wireless microphone.