KR970008612B1 - Reproducing apparatus for karaoke tv system - Google Patents

Abstract

An apparatus and a method for playing a recorded signal at a song accompaniment television are disclosed. The apparatus comprises a voice output sensor(13) for sensing the voice signal provided from a mike mixing amplification unit(7) and providing the sensed signal to a microcomputer(9); a voice recording player(14), responsive to a control signal from the microcomputer(9), recording and playing the voice signal from the mixing amplification unit(7); and a voice switching unit(15), responsive to the control signal from the microcomputer(9), for switching the voice signal from the mike mixing amplification unit(7), a TV voice signal and an external voice signal.

Description

Recording apparatus and method of song accompaniment TV

1 is a block diagram of a conventional song accompaniment TV.

2 is a block diagram of the song accompaniment TV recording and playback apparatus of the present invention.

3 is a block diagram of a voice recording and playback unit of the song accompaniment TV recording apparatus of the present invention.

Figure 4 is a flow chart showing the process of the song accompaniment TV recording method of the present invention.

* Explanation of symbols for main parts of the drawings

13 voice output detection unit 14 voice recording and playback unit

18: first low pass filter and amplification unit 19: A / D conversion unit

20: voice recording / playback control unit 21: memory unit

22: D / A converter 23: second low pass filter and amplifier

The present invention relates to a recording and reproducing apparatus and method for recording a song and accompaniment that a user sings in a song accompaniment TV, and later to match and reproduce the image.

As shown in FIG. 1, the conventional song accommodating device has a CD data pick-up unit 101 for reading CD data and a CD data pickup unit under the control of the microcomputer 109. The digital control unit 102 controls the 101 to output the CD data read from the CD pickup unit 101 to the digital signal processing unit 103, and the digital signal processing unit outputs the CD data output from the CD control unit 102. A digital signal processor 103 which separates the video signal data and the audio signal data into a video signal, and a video / audio decoder 104 that converts and outputs the video signal and the audio signal separated by the digital signal processor 103 into analog signals. A microphone amplifier 106 for amplifying a user's voice signal input from the microphone 105, a voice signal output from the microphone amplifier 106, and a voice converted from the video / audio decoding unit 104; Mixed Amplify Signal A microphone mixing amplifier 107, a key input unit 108 through which a user inputs a key of each function of a TV and a CD, and a microcomputer 109 for controlling each block by data input to the key input unit 108; And, under the control of the microcomputer 109, the video switch unit 110 for selectively switching the video signal, TV video signal and the external input video signal output from the video / audio decoding unit 104, and the video switch unit ( A chroma unit 111 for converting the video signal selected by the output 110 into a signal for display on the cathode ray tube (CRT) 112 and a cathode ray tube 112 for displaying the signal output from the chroma unit 111. And a voice switch unit 113 for selectively switching a voice signal and a TV voice signal and an external input voice signal output from the microphone mixed amplifier 107 under the control of the microcomputer 109, and the voice switch unit 113. Voice output selected from) A voice amplifier 114 for amplifying a call, and a speaker 115 for voice outputting the voice signal amplified by the voice amplifier 114.

In the conventional song accommodating device configured as described above, when a user inputs a key through the key input unit 108, the microcomputer 109 recognizes this and outputs control data to the CD control unit 102. The CD data pickup unit 101 is controlled by the control data output from 109 to receive the CD data read from the CD data pickup unit 101 and output the received CD data to the digital signal processing unit 103. When the digital signal processing unit receives the digital signal and outputs the video signal and the audio signal, the video signal and the audio signal separated by the digital signal processing unit 103 are converted into analog signals.

Subsequently, the video switch unit 110 selectively switches the video signal, the TV video signal, and the external input audio signal converted by the video / audio decoding unit 104 under the control of the microcomputer 109 to the chroma unit 111. The chroma unit 111 converts the signal to be displayed on the cathode ray tube 112 and outputs the same to the cathode ray tube 112 to display the cathode ray tube 112.

In addition, the microphone mixed amplifier 107 is inputted to the microphone 105, the amplified by the user's voice signal amplified by the microphone amplifier 106 and the audio signal converted in the video / audio decoding unit 104 by amplifying the voice switch unit When outputting to 113, under the control of the microcomputer 109 in the voice switch unit 113 to switch between the voice signal and the TV audio signal and the external input audio signal output from the microphone mixed amplifier 107 to be outputted In addition, the voice amplifier 114 amplifies the voice signal output from the voice switch unit 113 and outputs the voice through the speaker 115.

However, since the conventional song accompaniment device does not have a function of recording and playing back a song that the user sings, the user cannot listen to his song with accompaniment once again after the user sings the song.

The present invention is to perform the recording by recognizing the voice output from the CD in order to solve such a conventional problem, and to describe the configuration and effect by the accompanying drawings to enable the user to play when you want to play As follows.

The recording and reproducing apparatus of the song accompaniment TV according to the present invention controls the CD pickup unit 1 under the control of the CD data pickup unit 1 for reading CD data and the microcomputer 9 as shown in FIG. The digital control unit 2 outputs the CD data read from the CD data pickup unit 1 to the digital signal processing unit 3, and the digital data processed by the CD control unit 2 is subjected to digital signal processing. A digital signal processor (3) for separating audio signal data, a video / audio decoder (4) for converting and outputting video signals and audio signals separated by the digital signal processor (3) into analog signals, and a microphone (5) The microphone amplifier 6 amplifies the user's voice signal input from the user, and the audio signal output from the microphone amplifier 6 and the audio signal converted from the video / audio decoder 4 are amplified. Microphone A width input unit 7, a key input unit 8 through which the user inputs the respective functions of the TV and the CD, a microcomputer 9 which controls each block by the key signal input to the key input unit 8, and Under the control of the microcomputer (9), the video signal output from the video / audio decoding unit 4 and the video switch unit 10 for switching between the external video signal and the external input video signal, and in the video switch unit 10 A chroma unit 11 for converting the selected output image signal into a signal for display on the cathode ray tube 12, a cathode ray tube 12 for displaying a signal output from the chroma unit 11, and the microphone mixed amplifier The voice output sensor 13 detects whether the voice signal is output from the unit 7 and outputs the signal detected by the microcomputer 9, and the microphone mixed amplifier 7 is controlled by the microcomputer 9. Voice recording and reproducing unit 14 for recording and playing back a voice signal , A voice switch for selectively switching between the voice signal output from the microphone mixed amplifier 7 and the voice reproducing signal output from the voice recording / reproducing unit 14 under the control of the microcomputer 9 and a TV voice signal and an external input voice signal. 15, a voice amplifier 16 for amplifying the voice signal selected by the voice switch unit 15, and a speaker 17 for voice outputting the voice signal amplified and output from the voice amplifier 16. It is composed of

As shown in FIG. 3, the voice recording and reproducing unit 14 includes a first low pass filter and amplifying unit 18 for low-pass filtering and amplifying the voice signal output from the microphone mixing amplifier 7; And an A / D converter 19 for converting the signal output from the first low pass filter and the amplifier 18 into a digital signal, and a voice recording for controlling recording and reproduction by receiving control data from the microcomputer 9. / Playback controller 20, the memory unit 21 for storing voice recording data under the control of the voice recording / playback control unit 20, and the voice recording / playback control unit 20 at the time of playing the recorded voice data A D / A converter 22 for converting the output audio signal into an analog signal, and a second low pass filter and amplifying unit 23 for low-pass filtering and amplifying the signal output from the D / A converter 22. It is composed of

In addition, the configuration of the recording and reproducing method of the song accommodating device of the present invention will be described with reference to FIG. 4. In the first step of judging whether there is a recording key input and the first key determination result, the CD controller 2 Outputs the CD playback data, and determines whether the voice output is detected by the voice output detecting unit 13, and when the voice output is detected, outputs a signal to record the voice recording and reproducing unit 14 to perform recording. The second step of stopping recording when the CD performance is completed, and the first step judges whether there is a play key input if there is no record key input, and if there is no play key input, inputs another key. A third step of determining whether a voice output is detected by the voice output detecting unit 13 after outputting one piece of repeated playback data to the CD controller 2 if there is an input; When the voice output is detected by the sexual output detecting unit 13, the voice recording data is output to the voice recording and reproducing unit 14, and the switch of the voice switch unit 15 is switched to the 'b' side to output the reproducing voice signal. A fourth process for determining whether one song has been performed; and if the one song has been completed as a result of the fourth process, the voice playback is stopped, and the switch of the voice switch unit 15 is switched to 'a' to output the CD sound. It consists of a fifth process.

When described with reference to the accompanying drawings the operation and effect of the present invention recording and reproducing apparatus and method are as follows.

When the user inputs the recording key through the key input unit 8, the recording and reproducing apparatus of the present invention recognizes this from the microcomputer 9 and outputs control data to the CD control unit 2, and the CD control unit 2 outputs the microcomputer 9. The CD data pickup unit 1 is controlled by the control data output from the digital data processing unit 3 to receive the CD data read from the CD data pickup unit 1 and output the received CD data to the digital signal processing unit 3. When the digital signal is processed and separated into a video signal and an audio signal, the video signal and the audio signal separated by the digital signal processor 3 are converted into an analog signal.

Thereafter, the video switch unit 10 switches the video signal, the TV video signal and the external input video signal converted by the video / audio decoding unit 4 under the control of the microcomputer 9 to the chroma unit 11. The chroma unit 11 outputs the signal to the cathode ray tube 12 so as to be displayed on the cathode ray tube 12.

In addition, when the microphone mixed amplifier 7 inputs the microphone 5 and is amplified by the microphone amplifier 6 and the audio signal converted by the video / audio decoding unit 4 is amplified and output. In response to the control of the microcomputer 9, the voice switch unit 15 outputs the voice signal output from the microphone mixed amplifier 7 and the reproduced voice signal output from the voice recording and reproducing unit 14, and a TV voice signal and an external input. Selective switching among the audio signals is output, and the voice amplifier 16 amplifies the voice signal output from the voice switch unit 15 and outputs the voice through the speaker 17. In this case, the voice output detection unit At 13, the microphone mixed amplifier 7 detects whether a voice signal is output, applies the detected signal to the microcomputer 9, and if the voice output detector 13 determines that there is a voice output, the microcomputer ( 9) voice recording and playback section 14 The control data is input to the voice recording / playback control unit 20, and the first low pass filter and the amplifying unit 18 low-pass filter the audio signal output from the microphone mixing amplifier 7 and amplify the first signal. 1 The low-pass filter and the amplifying section 18 converts the signal output from the A / D converter 19 into a digital signal, stores it in the memory 21, and stores the data read from the CD controller 2 in the microcomputer ( If it is determined in step 9) that one song has been played, the control data is output to the voice recording / playback control unit 20 of the voice recording and playback section 14 to stop recording.

Subsequently, when the user wants to play the recorded data stored in the memory unit 21 and inputs the play key of the key input unit 8, the microcomputer 9 matches the sequence and speed of the CD's lyrics with the playback of the recorded voice. In order to output the data of one CD repeated playback to the CD controller 2, wait until the voice output detection signal is input from the microphone mixed amplifier 7 from the voice output detection unit 13, and then the voice output detection unit 13 is output. When the audio output signal is detected at, the microcomputer 9 outputs control data to the voice recording / playback control unit 20 of the voice recording / reproducing unit 14 to load the recording data stored in the memory unit 21 ( Load) to convert the analog signal to the D / A converter 22, and then to the low pass filter of the second low pass filter and the amplification unit 23, and then amplify and output the same to the voice switch unit 15. 15, the 'b' terminal under the control of the microcomputer (9) The audio signal, which is switched and reproduced, is amplified by the audio amplifier 16 and then output to the speaker 17. The video, i.e., the subtitle, is reproduced through the video switch unit 10 from the video / audio decoding unit. Matched to the sound being displayed on the cathode ray tube 12.

When the data is read from the CD controller 2 by the microcomputer 9 and the performance of one song is completed, the audio recording / playback controller 20 outputs the playback stop control data to stop the playback and outputs the CD audio. Switch (15) to the 'a' side.

As described above, when the CD is played, the accompaniment of the CD and the voice input by the user through the microphone 5 are recorded, and when the accompaniment output from the CD is started, the recorded voice is reproduced together with the subtitles. It has the effect of letting you know the pitch and beat of your song.

Claims (3)

Under the control of the microcomputer 9 in the CD control unit 2, the CD data read out from the CD data pickup unit 1 is output to the digital signal processing unit 3, and the outputted CD data is converted into video signal data and audio signal data. And converts the video signal and the audio signal separated by the digital signal processor 3 into an analog signal by the video / audio decoding unit 4 and outputs the user's audio signal input from the microphone 5 to the microphone amplification unit ( 6), the amplified output of the audio signal amplified by the microphone amplifier 6 and the audio signal converted by the video / audio decoding unit 4 is amplified and mixed in the microphone mixed amplifier 7, the user inputs the key input unit Each block is controlled by the microcomputer 9 by the key inputted through (8), and the video switch unit 10 selectively outputs the signal output from the video / audio decoding unit 4 to output the video signal to the chroma unit ( 11) through cathode ray tube (12) In the song accompaniment TV comprising a display and a voice signal output from the microphone mixed amplifier, the voice switch unit selectively outputs and amplifies the audio signal to the speaker. Recording and reproducing the voice signal output from the microphone mixed amplifier 7 under the control of the voice output detector 13 and the microcomputer 9 to detect whether the output is detected and output the signal detected by the microcomputer 9. Under the control of the voice recording and reproducing unit 14 and the microcomputer 9, the audio signal output from the microphone mixed amplifier 7 and the audio signal and the TV audio signal output from the voice recording and reproducing unit 14 Song playback apparatus of the song accompaniment TV, characterized in that consisting of a voice switch unit for selectively switching the input audio signal. The voice recording and reproducing unit (14) of claim 1, wherein the voice recording and reproducing unit (14) comprises: a first low pass filter and amplifying unit (18) for low pass filtering and amplifying the voice signal output from the microphone mixing amplifier (7); An A / D converter 19 for converting the signal output from the low pass filter and the amplification unit 18 into a digital signal, and a voice recording / playback control unit for controlling recording and playback by receiving control data from the microcomputer 9 ( 20), a memory unit 21 for storing voice recording data under the control of the voice recording / playback control unit 20, and a voice signal output from the voice recording / playback control unit 20 when the recorded voice data is played back. And a second low pass filter and amplifying unit 23 for low-pass filtering and amplifying the signal output from the D / A converting unit 22. Song accompaniment recording device for playing TV. First step of determining whether there is a recording key input, and if there is a recording key input as a result of the first step determination, after outputting the CD playback data to the CD controller 2, is the voice output detected by the audio output sensing unit 13 detected? If it is determined that the audio output is detected, the voice recording and playback unit 14 outputs a signal to perform recording and recording, and if the CD performance of one song is completed, the second process of stopping recording, and the first If the process judges that there is no record key input, it judges whether there is a play key input. If there is no play key input, other key is inputted. If there is a play key input, it outputs one repeated data of playback to the CD controller 2, and then outputs a voice. The third process of determining whether the voice output is sensed by the detector 13 and, when the voice output is detected by the voice output detector 13 as a result of the third process, the voice reproducing data is transmitted to the voice recording / reproducing unit 14. Outputting and switching the switch of the voice switch unit 15 to the terminal of the voice recording / reproducing unit 14 to output the reproducing voice signal, and then determining whether the one-song performance is completed; When the one-song performance is completed, the voice playback stops, and the fifth step of switching the switch of the voice switch unit 15 to the terminal of the microphone mixing amplifier unit 7 to output the CD audio is characterized in that How to play recordings.