KR19990015935A - Audio data dubbing control device and method - Google Patents

Abstract

The audio data dubbing control device and its method generate a signal of noise component by temporarily stopping the audio dubbing operation when a scratch occurs in a section of the CD track during audio dubbing operation or when normal audio / video data cannot be output due to such scratch phenomenon. Is not recorded on the VCR's magnetic recording tape. When the audio dubbing key is input, the audio data recorded on the disc is reproduced according to the dubbing key input signal, and a positive frequency with respect to the frequency corresponding to the currently reproduced audio signal. Filters only the audio signal corresponding to the component and integrates the filtered audio signal to output a DC value of a predetermined level, and compares the output DC value with a predetermined reference DC value to reproduce the reproduced audio data at a predetermined level. Error correction and demodulation for error correction of audio data Outputting the signal of the corresponding level according to the demodulation result, and when the DC value of the predetermined level is greater than or equal to the preset reference DC value or outputting the signal of the corresponding level according to the demodulation result, the capstan of the VCR unit according to the output signal There is a point of controlling the motor so that the audio data reproduced by the CD unit is not recorded in the audio recording unit.

Description

Audio data dubbing control device and method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite product of a compact disc / video cassette recorder (CD / VCR) player, and more particularly, to an audio data dubbing control apparatus and method thereof in a composite product of a CD / VCR player.

In general, a user often records and edits audio data desired by a user to go to a wedding or outdoor video data recorded by the user. The audio data dubbing control device according to the related art will be described with reference to the accompanying drawings. Let's do it.

1 is a block diagram of a combination product of a VCD / CD and a VCR according to the prior art. Referring to FIG. 1, the configuration thereof includes: a CD unit 10 for reproducing audio data recorded on a CD; A VCR unit 30 for recording and reproducing video and audio data on magnetic tape; An interfacing unit 40 for interfacing input / output of audio / video signals recorded and reproduced in the CD unit 10 and the VCR unit 30 according to one control signal; A key input unit 50 for providing various function key input signals to the CD unit 10 and the VCR unit 30; The control unit 60 controls the CD unit 10 and the VCR unit 30 according to the key input signal input from the key input unit 50.

The CD unit 10 includes: an amplifier 12 which amplifies a predetermined level of an audio signal or a video / audio signal reproduced by an optical pickup from a CD or a VCD 11; A signal processor 13 for demodulating the audio / video signal amplified by a certain level and correcting the error of the video / audio signal, and then separately outputting the audio signal and the video signal; A D / A converter 14 for D / A converting the audio signal output from the signal processor 13; First and second low pass filters (LPFs) 15 and 16 for filtering only signals in the low frequency region of the D / A-converted audio signal; A decoding unit 17 for decoding the video signal separated and output from the signal processing unit 13 according to the control signal of the control unit 60; A storage unit 18 for temporarily storing the decoded video signal; A D / A converter 19 for D / A converting the decoded video signal output from the decoder 17 according to the output control signal of the controller 60; The encoder 20 encodes the D / A converted video signal.

The VCR unit 30 includes first and second switching units for selectively outputting audio and video signals reproduced by the CD unit 10 and an external image display device (TV) according to a selection control signal of the control unit 60 ( 35, 36); The audio or video signal selected and output by the first and second switching units 35 and 36 is recorded on one recording medium according to the recording control signal of the control unit 60, and the recorded video signal is reproduced by the reproduction control signal of the control unit 60. Audio / video signal recording and reproducing units 31, 32, 33, and 34 for reproduction processing.

The interfacing unit 40 switches the audio / video signals reproduced by the CD unit 10, the VCR unit 30, or the image display device to be selectively output according to the selection control signal of the control unit 60. It consists of four switching parts 41 and 42.

The operation of the audio signal dubbing apparatus in the CD / VCR composite product having the configuration as described above will be described.

First, the user selects the audio dubbing mode using the audio dubbing key of the key input unit 50 to record the audio data reproduced by the CD unit 10 on the magnetic tape on which only video data is recorded.

When the audio dubbing mode is entered, the CD unit 10 enters the playback mode, and the VCR unit 30 switches to the reproduction of the video data of the inserted magnetic tape and the audio data recording mode reproduced from the CD unit 10, respectively.

When the CD unit 10 enters the playback mode, the audio amplifiers recorded on the CD 11 are read by pick-up and amplified by the reproduction amplifier unit 12 at a predetermined level, and the amplified audio signals are D / A. The conversion unit 14 converts the analog signal. The converted audio signals are low-pass filtered in the first and second LPFs, respectively, and are output to the second switching unit 36 and the third switching unit 41.

The audio signal output to the third switching unit 41 is output to a speaker (not shown) according to the selection output control signal of the control unit 60, and the audio signal input to the second switching unit 36 is simultaneously controlled to the control unit 60. Is output to the audio recording section 33 according to the selection output control signal of "

The audio data recording method in the case of the VCD 11 is as described above, and the video signal reproduced in the VCD 11 is demodulated by the signal processing unit 13, error corrected, and output to the decoding unit 17. The video data decoded by the decoding unit 17 is D / A-converted by the D / A converter 19, and the converted video signal is encoded by the encoder 20 so that the fourth switching unit 42 and the first switching unit are used. Are output simultaneously to (35).

The video data output to the fourth switching unit 42 is output to the video display device according to the selection output control signal of the control unit 60, and the video data of the VCD output to the first switching unit 35 is the control unit 60. Is recorded in the video recording area of the magnetic tape inserted into the VCR unit 30 in accordance with the selective output signal.

In addition, when the CD unit 10 and the VCR unit 30 respectively perform the operation, the third switching unit 41 and the fourth switching unit 42 are adapted to the VCR mode or the CD mode selection of the key input unit 50. Accordingly, each audio / video source may be selected according to the selection control signal of the controller 60.

The audio data dubbing control device in a combination product of a conventional VCD / CD and a VCR performs a dubbing operation on a magnetic recording tape inserted into a VCR. When scratches or noise-mixed audio data are played back, audio signals and audio data mixed with noise components in the scratched section are recorded in the audio recording area of the magnetic recording tape of the VCR. have.

In addition, if audio data mixed with a scratch section or noise component is recorded, there is another problem in that normal audio data cannot be reproduced when the magnetic recording tape is reproduced later.

Accordingly, the present invention has been made to solve the above-mentioned problems according to the prior art, and an object of the present invention is that a scratch occurs in a section of a CD track when performing an audio dubbing operation as described above, The present invention provides an audio data dubbing control apparatus in which an audio dubbing operation is paused when audio / video data is not output so that a signal of noise component is not recorded on the magnetic recording tape of the VCR.

Another object of the present invention is to provide an audio data dubbing control method corresponding to the audio data dubbing control apparatus.

1 is a block diagram of a composite product of a VCD / CD and VCR according to the prior art

2 is a block diagram of an audio data dubbing control device in a composite product of a VCD / CD and a VCR according to the present invention.

3 is an operation flowchart showing a method for controlling audio data dubbing in a combination product of a VCD / CD and a VCR according to the present invention.

♣ Explanation of symbols for main parts of the drawing

10: CD portion 30: VCR portion

40: interface unit 50: key input unit

60 control unit 70 integral circuit unit

80: waveform shaping circuit part

An audio data dubbing control device according to the present invention is characterized in that the audio data dubbing device of a composite product of a VCR equipped with a CD unit having a disc and a capstan motor and an audio recording unit is provided for the audio signal currently reproduced by the CD unit. A shaping circuit unit for filtering and outputting only an audio signal corresponding to a positive frequency component of a corresponding frequency; An integrating circuit unit for integrating an audio signal output from the shaping circuit unit and outputting a DC value of a predetermined level; When the DC value of the predetermined level output from the integrating circuit unit is compared with the preset reference DC value, the capstan motor of the VCR unit is paused and reproduced by the CD unit in the audio recording unit when the DC value of the predetermined level is equal to or greater than the predetermined reference DC value. And a controller for controlling the audio data not to be recorded.

Another feature of the audio data dubbing control apparatus according to the present invention is a audio data dubbing apparatus of a composite product of a VCR equipped with a CD unit having a disc and a capstan motor and an audio recording unit, the audio data being reproduced from the disc of the CD unit. An amplifier for reproducing and amplifying a predetermined level; A signal processor for correcting and demodulating the audio data output from the amplifier and outputting a signal having a corresponding level according to the result; According to the signal output from the signal processing unit, it is judged whether an error occurs in the disc or the disc. If an error occurs or audio data is not properly demodulated, the capstan motor of the VCR unit is paused and the audio data reproduced from the CD unit is recorded on the audio recording unit. Is configured to include a control unit for controlling the data not to be recorded.

In the audio data dubbing control method according to the present invention, there is provided an audio data dubbing method for a composite product of a VCR having a CD unit having a disc, a capstan motor and an audio recording unit, comprising: inputting an audio dubbing key input signal; ; Reproducing audio data recorded on the disc of the CD unit according to the key input signal; Filtering only an audio signal corresponding to a positive frequency component with respect to a frequency corresponding to the currently reproduced audio signal; Integrating the filtered audio signal to output a DC value of a predetermined level; Comparing the output DC value of the predetermined level with a preset reference DC value; If the DC value of the predetermined level is equal to or greater than the predetermined reference DC value, the capstan motor of the VCR unit is paused to control not to record the audio data reproduced from the CD unit in the audio recording unit.

Another feature of the audio data dubbing control method according to the present invention is the audio data dubbing method of a composite product of a VCR having a CD unit having a disc and a capstan motor and an audio recording unit, which inputs an audio dubbing key input signal. Steps; Reproducing audio data recorded on the disc of the CD unit according to the key input signal; Performing error correction and demodulation by amplifying the reproduced audio data at a predetermined level and outputting a signal having a corresponding level according to the error correction and demodulation result of the audio data; According to the output signal, it is determined whether or not an error occurs in the demodulation and the disc. If an error occurs or the audio data is not properly demodulated, the capstan motor of the VCR unit is paused and the audio data reproduced from the CD unit is recorded in the audio recording unit. It is made to control not to.

Hereinafter, an embodiment of an audio data dubbing control apparatus and method thereof according to the present invention will be described with reference to the accompanying drawings.

2 is a block diagram of an audio data dubbing control apparatus in a composite product of a VCD / CD and a VCR according to the present invention.

Referring to FIG. 2, the configuration of the same components as in the prior art will be omitted. Referring to the configuration, OV of audio signals output from the first and second LPFs 15 and 16 illustrated in FIG. A shaping circuit unit 80 for filtering the audio output of the positive component on the basis of; An integrating circuit unit 70 for integrating the amount of audio output filtered by the shaping circuit unit 80 to output a DC value of a predetermined level; The capstan motor (not shown) of the VCR unit 30 according to the high-low output signal output from the signal processing unit 13 of the CD unit 10 or the DC value output from the integration circuit unit 70 is greater than or equal to the preset reference DC value. The control unit 60 for controlling the operation of the) is further configured.

Let's look at the operation of the audio data dubbing control device further provided with the configuration as described above.

The RF signal reproduced by the disk 11 of the CD unit 10 by the pickup is amplified by the reproduction amplifier unit 12 at a predetermined level and input to the signal processing unit 13 to demodulate and correct the RF signal.

The signal processed by the signal processing unit 13 is output to the decoding unit 17 and the control unit 60 through an output terminal. At this time, the signal output to the control unit 60 does not have a scratch on the track of the disk 11. In the normal state, when the output is low and the disk 11 is damaged or the pickup is unstable and the video / audio data of the disk cannot be demodulated correctly by the signal processing unit 13, that is, when an error occurs in the data It is output as (High).

Further, even when the pickup jumps the track of the disc, the signal processor 13 outputs a high signal.

As such, when the signal output from the signal processor 13 is high due to an error of data recorded on the disk, normal video data and audio data are not output. Therefore, the controller 60 determines that the audio data currently being played on the disc 11 is the audio data of the portion where the scratch has occurred on the disc 11.

In addition, the audio signal output from the D / A converter 14 due to an error of the audio / video data recorded on the disc 11 is outputted with a high level audio signal in which noise components are mixed. Audio signal of the VCR unit is different from the analog noise component generated in the magnetic recording tape of the VCR 30, so that an audible sharp sound is produced. The audio signal mixed with the noise components thus output is input to the shaping circuit unit 80.

The shaping circuit unit 80 inputs the audio signal mixed with the input noise component to the integrating circuit unit 70 by filtering only the positive audio component based on the OV.

The integrating circuit unit 70 integrates a filtered amount of audio components among the noise mixed audio signals input from the shaping circuit unit 80 and inputs a DC value of a predetermined level to the control unit 60.

The control unit 60 compares the DC value input from the integrating circuit unit 70 with the reference DC value at the time of normal audio output, and when the DC value input from the integrating circuit unit 70 is larger than the reference DC value, it is called a scratch portion of the disc. You will be judged.

As such, when the signal output from the signal processing unit 13 to the control unit 60 is high or the DC value input from the integrating circuit unit 70 is a predetermined level or more than the reference DC value, the control unit 60 determines that it is a scratch part. The drive of the capstan motor (not shown) of the section 30 is stopped to temporarily record the audio data being recorded on the audio recording section 33.

In the audio data recording stop state, the audio reproduction operation of the CD unit 10 is continuously performed. Therefore, the control unit 60 continuously detects the signal output from the signal processing unit 13 to detect a low signal instead of a high signal, or integrate it. When the detected DC value is equal to or less than the reference DC value, the DC unit output from the circuit unit 70 is continuously detected, and it is determined that the scratch part has passed, and the capstan motor of the VCR unit 30 is driven again.

In accordance with the driving of the capstan motor, an audio recording operation for recording audio data reproduced by the CD unit 10 to the audio recording unit 33 of the VCR unit 30 is performed.

As described above, operations other than the operation of recording (dubbing) the audio data reproduced by the CD unit 10 in the audio recording area of the magnetic recording tape of the VCR unit 30 are the same as in the prior art, and thus the description of the operation is described. Omit.

Hereinafter, an audio data dubbing control method corresponding to the audio data dubbing control apparatus according to the present invention will be described with reference to FIG. 2.

3 is a flowchart illustrating a method of controlling audio data dubbing in a combination product of a VCD / CD and a VCR according to the present invention.

First, when a user wants to dub the audio signal reproduced by the CD unit 10 to the VCR unit 30, the audio input signal is input through the key input unit 50 (S101).

When the audio dubbing signal is input, the operation mode of the CD unit 10 and the VCR unit 30 is set. The CD unit 10 is switched to the playback mode, and the video of the VCR unit 30 is switched to the playback mode. The audio is switched to the recording mode (S102). That is, the playback mode is set so that the capstan motor can be driven in accordance with the control mode of the control unit 60 and the playback mode of the video playback unit 32 can be performed at the same time as the playback mode setting of the CD unit 10. The recording mode is set so that the audio data reproduced in the section 10 can be recorded in the audio recording section 33.

When the respective modes are set in the CD unit 10 and the VCR unit 30, audio data recorded on the disc 11 is reproduced in the CD unit 10 (S103).

When audio data is reproduced in the CD unit 10, the signal processor 13 shown in FIG. 1 determines the signal level applied to the control unit 60 (S104). As a result of determination, when the signal output from the signal processor 13 to the controller 60 is low, the disc 11 of the CD unit 10 does not have a scratch and judges that normal audio data is reproduced. The audio data reproduced in the recording mode is recorded in the audio recording section 33 of the VCR section 30. That is, the audio dubbing operation is performed (S107).

However, when the signal output from the signal processor 13 to the controller 60 is high, the controller 60 may be damaged due to a scratch on the disk, or the pickup may be unstable to accurately demodulate the audio data recorded on the disk. I think that.

In addition, it is determined whether the DC value input from the integrating circuit unit 70 shown in FIG. 1 to the control unit 60 is higher than a predetermined reference DC value by a predetermined level (S105). As a result of determination, when it is determined that the DC value input to the controller 60 is equal to or less than the preset reference DC value, the disc 11 of the CD unit 10 has no scratch, and it is determined that normal audio data is reproduced. The audio data reproduced in 10) is recorded in the audio recording section 33 of the VCR section 30. That is, the audio dubbing operation is performed (S107).

However, when the signal output from the signal processing unit 13 is high or the DC value output from the integrating circuit unit 70 is greater than the preset reference DC value as a result of the determination in steps S104 and S105, the control unit 60 controls the disc. It is judged that the scratch has caused damage, and the capstan motor of the VCR unit 30 is temporarily stopped to stop the recording (dubbing) operation of the audio data.

Subsequently, after a predetermined time elapses, if it is determined that the signal output from the signal processing unit 13 to the control unit 60 is low or the DC value output from the integrating circuit unit 70 is less than or equal to the reference DC value, the CD unit ( Since the scratch portion passes to the disc 11 of 10) and normal audio data is reproduced, the audio data reproduced from the CD unit 10 is rewritten to the audio recording unit 33 of the VCR unit 30.

In the audio data dubbing control apparatus and method according to the present invention, scratches occur in a section of a CD track that is played during audio dubbing operation from the CD unit to the VCR unit, or normal audio / video data cannot be output due to such scratch phenomenon. When the capstan motor of the VCR is stopped, the audio dubbing operation is temporarily stopped to prevent the recording of the audio signal mixed with the noise component.

Therefore, the audio data dubbing function of the CD / VCR composite product can be enhanced.

Claims (6)

In the audio data dubbing apparatus of the composite product of the VCR provided with the CD part provided with a disc, and a capstan motor and an audio recording part, A signal processor for reproducing and amplifying the audio data reproduced on the disk of the CD unit at a predetermined level, correcting and demodulating the amplified audio data, and outputting a signal having a corresponding level according to the error correction and demodulation results of the audio data; A shaping circuit unit for filtering and outputting only an audio signal corresponding to a positive frequency component of a frequency corresponding to an audio signal currently reproduced by the CD unit; An integrating circuit unit for integrating an audio signal output from the shaping circuit unit to output a DC value of a predetermined level; The DC value of the constant level output from the integrating circuit unit may be compared with the preset reference DC value to determine whether the DC value of the predetermined level is greater than or equal to the preset reference DC value or the audio data is not properly demodulated according to the signal output from the signal processor. And a controller for temporarily stopping the capstan motor of the VCR unit so that audio data reproduced from the CD unit is not recorded in the audio recording unit. The audio of claim 1, wherein the controller determines that an error has occurred in the disc when the signal output from the signal processor is high, and determines that the disc is in a normal state where no error occurs in the disc. Data Dubbing Control Device 2. The audio data dubbing control apparatus according to claim 1, further comprising an interface unit for interfacing audio data reproduced from the disc of the CD unit to be recorded in the audio recording unit of the VCR unit. In the audio data dubbing method of a composite product of a VCR having a CD unit provided with a disc and a capstan motor and an audio recording unit, Inputting an audio dubbing key input signal; Reproducing audio data recorded on the disc of the CD unit according to the key input signal; Filtering only an audio signal corresponding to a positive frequency component with respect to a frequency corresponding to the currently reproduced audio signal; Integrating the filtered audio signal to output a DC value of a predetermined level; Comparing the output DC value of the predetermined level with a preset reference DC value; Performing error correction and demodulation by amplifying the reproduced audio data at a predetermined level and outputting a signal having a corresponding level according to the error correction and demodulation result of the audio data; When the DC value of the predetermined level is equal to or higher than the predetermined reference DC value as a result of the comparison or in the step of outputting a signal of the corresponding level according to the demodulation result, the capstan motor of the VCR unit is paused and played on the CD unit in the audio recording unit. And controlling the audio data not to be recorded. The audio data dubbing control method according to claim 4, further comprising: switching the CD unit to a playback mode, the VCR unit to a video data playback mode, and an audio data recording mode when an audio dubbing key is input. 5. The method of claim 4, wherein when the output signal is high according to the demodulation result, it is determined that an error has occurred in the disc. If the signal is low, the error does not occur in the disc. Audio data dubbing control method characterized in that judged by the state.