JPH08293151A - Dubbing device - Google Patents

Abstract

PURPOSE: To dissolve a dubbing failure due to a sound hopping of a reproducing side by controlling so that data whose addresses continue are recorded on a second recording medium in a recording part by using reproduced data. CONSTITUTION: While the reproducing operation in a CD part 2 is executed in a dubbing operation, etc., a system controller 1 successively detects the audio level information from a decoder part or an encoder/decoder part. Then, the controller 1 calculates a speaker output level SPL and compares the level SPL with a previously determined set level. When the level SPL exceeds the set value, the controller 1 predicts that the vibration at that time becomes a state in which it is not ignored as an external vibration and makes the off-tracking, the off-focusing, etc., due to the vibration to be hardly caused in an optical head by increasing a servo gain.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dubbing device capable of dubbing reproduced data from a first recording medium onto a second recording medium.

[0002]

2. Description of the Related Art Recently, various recording media such as discs have been used for reproduction / recording for general music.
In particular, compact discs (hereinafter referred to as CDs) have become widespread, and various CD players for reproducing music have been developed.
Further, a data rewritable magneto-optical disc that allows a user to record music data and the like is known, and is put into practical use as a recording / reproducing system using, for example, a mini disc (hereinafter referred to as MD).

Further, it has been considered to construct a recording / reproducing device unit compatible with MD and a reproducing device unit compatible with CD into one combined device. In this case, the CD is used. It is possible to enjoy normal playback and recording / playback using MD, and easily perform, for example, dubbing recording from CD to MD.

[0004]

By the way, when making a dubbing recording by a device in which the MD recording / reproducing apparatus section and the CD reproducing apparatus section are integrated, the CD side on the CD side is affected by disturbance or scratches on the CD. When the continuity of the reproduced audio data is interrupted (so-called skipped sound condition), M
The audio data recorded on the D side will also be recorded in the skipped state, which is very inconvenient. For example, even if such a skip on the CD side occurs during dubbing, unless the user keeps monitoring the audio during the dubbing, it is not possible to know that the dubbing recording was not successful, and it will be later. You will notice the dubbing failure only after playing the MD side.

The skipping of the reproduced voice is caused by the fact that the tracking servo or focus servo is disengaged due to, for example, disturbance or scratches on the disk. In other words, if the servo goes off and the data could not be read, the CD playback device section immediately restores the servo and resumes playback, but the time until this return is silent as audio data. , This is what you hear as a jump.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate such a dubbing failure due to sound skipping.

For this reason, a reproducing section capable of performing a reproducing operation on the first recording medium and a recording capable of performing a recording operation on a second recording medium of the same type as or different from the first recording medium. And the following means are provided in a dubbing device capable of dubbing recorded reproduction data from the first recording medium on the second recording medium. First, as the address continuity determining means, the reproducing unit can determine the continuity of addresses of data reproduced from the first recording medium. Further, there is provided a servo gain characteristic changing means capable of changing the servo gain characteristic in the servo system for executing the servo operation required for the reproducing operation of the reproducing section. As the control means, when the address continuity determining means determines the address discontinuity during the dubbing operation, the servo gain characteristic changing means changes the servo gain characteristic, and at least the data reproducing operation including the address discontinuity point is performed. Is re-executed, and the reproduction data obtained by the re-execution is used to perform control so that data having consecutive addresses is recorded in the second recording medium in the recording section.

When the reproducing unit is configured to temporarily store the data read from the first recording medium in the storage unit, read the data at a predetermined timing and supply the data to the recording unit, the control unit sets the address When the re-execution control of the reproduction operation of the data including the discontinuous point is performed, the reproduction data by the re-execution is used to form continuous data of addresses in the storage means and supply it to the recording unit. Data having consecutive addresses is recorded in the second recording medium in the recording unit. Alternatively, the control unit controls the re-execution start position to the head position of the track including the address discontinuity point when the reproduction operation of the data including the address discontinuity point is re-executed, and the recording in the recording unit is performed. By controlling the operation so as to restart from the head position of the track being recorded, data having consecutive addresses is recorded in the second recording medium in the recording section. Then, if the address discontinuity point is not eliminated even after performing such a retry operation, the control means enables the track to be erased as a dubbing failure.

Further, the reproducing section is provided with a defect detecting means capable of detecting a defect on the first recording medium being reproduced, and the control means discriminates the address discontinuity by the address continuity discriminating means. When the presence of a defect on the first recording medium is detected by the defect detecting means, the servo gain characteristic changing means is controlled to reduce the servo gain.

Further, the reproducing section is provided with a vibration detecting means capable of detecting vibration applied to the first recording medium being reproduced, and the control means discriminates the address discontinuity by the address continuity discriminating means. In addition, when the vibration detecting means detects a state in which the first recording medium is vibrated, the servo gain characteristic changing means is controlled to increase the servo gain.

In the same dubbing apparatus, speaker means capable of outputting reproduced data from the first recording medium as a sound at the time of dubbing operation, and sound level detection capable of detecting a sound output level from the speaker means. Means is provided, the control means controls the servo gain characteristic varying means to change the servo gain characteristic in accordance with the value detected by the audio level detecting means during the dubbing operation.

[0012]

In order to prevent the skipping of the sound during reproduction, it is an effective means to prevent the servo loss. Here, it is preferable to increase the low range of the servo gain in the servo system in order to prevent the servo from coming off due to disturbance such as vibration or shock, surface wobbling of the disk, and eccentricity. For example, by increasing the gain around 300 Hz, it is possible to prevent the servo operation from following the disturbance.

Further, in order to prevent the servo deviation from occurring due to scratches (defects) on the disk, for example, 1K.
By lowering the gain near Hz, it is possible to prevent the servo operation from following the scratch. Therefore, in the case where a sound skip occurs, the servo gain can be changed according to the cause and the reproduction retry can be performed, whereby reproduction data without sound skip can be obtained. In addition, the continuity of the reproduced data is adjusted according to the reproduction retry operation, and the operation of the recording unit is controlled to record the data with continuous addresses (that is, without skipping) in the second recording medium. Is possible.

[0014]

EXAMPLE An example of the dubbing apparatus of the present invention will be described below. In the dubbing apparatus of the embodiment, the CD reproducing apparatus section and the MD recording / reproducing apparatus section are integrally formed so that dubbing recording from CD to MD is possible. I. First Embodiment 1. Overall structure of dubbing device 2. Structure of CD part 3. Configuration of MD unit 4. Defect handling during dubbing 5. Shock response processing during dubbing 6. Sound jump prevention process during dubbing 7. Processing after completion of dubbing II. Second embodiment 1. Structure of CD part 2. Retry processing

I. First Embodiment 1. Overall Structure of Dubbing Device FIG. 1 shows the overall structure of a dubbing device according to an embodiment. This dubbing device is a CD player unit (hereinafter referred to as a CD
2) and MD player / recorder section (hereinafter referred to as MD section)
3 is a composite device arranged in the same housing, and is a device capable of executing reproduction of a CD and recording and reproduction on an MD. Various operation control in the CD section 2 and the MD section 3 and C
Playback audio output system from D unit 2 and MD unit 3, and MD unit 3
The operation of each part of the system for supplying the recording signal to the is controlled by the system controller 1 formed by a microcomputer. The system controller 1 supplies various control signals C _NT for performing necessary operation control to each unit.

The CD section 2 reproduces the loaded CD based on the control signal C _NT from the system controller 1. For this playback operation, the system controller 1 sends a playback command, a stop command, a pause command, an access command, a servo system control command, etc. as a control signal C _NT to the CD.
Will be supplied to part 2. The reproduced audio signal S _OUTC from the CD unit 2 is output from the terminal 29 and supplied to the T _CD terminal of the function switching circuit 6. During reproduction operation in the CD unit 2, the CD unit 2 supplies to the system controller 1 management information SG such as addresses extracted as TOC (table of contents information) and subcodes. The system controller 1 can know the address of the track to be reproduced, the current address (time information), and the like from the management information SG.

Further, as will be described in detail later, a defect detection signal DF for detecting a signal error due to a scratch on the CD, and a shock detection signal S for detecting a signal error due to external vibration.
D and audio level information ALV for detecting the level of the read audio data are also supplied to the system controller 1.

The MD unit 3 performs the reproducing operation of the loaded MD and the recording operation for the MD based on the control signal C _NT from the system controller 1. For this recording / playback operation, the system controller 1 sends the control signal C _NT.
As recording command, playback command, stop command, pause command,
An access command, a servo system control command, etc. will be supplied to the MD unit 3. The reproduced audio signal S _OUTM from the MD unit 2 is output from the terminal 43, and the T of the function switching circuit 6 is output.
Supplied to _MD pin. Further, when recording is performed by the MD unit 2, the audio signal to be recorded is input to the MD unit 2 from the terminal 44.

During the recording / reproducing operation in the MD section 3,
TOC from MD unit 3 to system controller 1
(Contents information), address information, status information of each part, and other management information SG are supplied. The system controller 1 can know the address of the track to be reproduced, the current address (time information), the address of the recording area, and the like based on the management information SG. Further, audio level information ALV for detecting the level of audio data input as recording data during the recording operation is also supplied to the system controller 1.

When the CD section 2 is executing the reproducing operation, the system controller 1 connects the function switching circuit 6 to the T _CD terminal. Therefore, the reproduced audio signal S _OUTC from the CD unit 2 is supplied to the D / A converter 7 via the function switching circuit 6 and becomes an analog audio signal. Then, it is amplified by the power amplifier 9 via the volume control unit 8 and output as reproduced sound from the speaker unit 10.

When the MD unit 3 is executing a reproducing operation, the system controller 1 connects the function switching circuit 6 to the T _MD terminal. Therefore, the reproduced audio signal S _OUTM from the MD unit 3 is supplied to the D / A converter 7 via the function switching circuit 6 and becomes an analog audio signal. Then, it is amplified by the power amplifier 9 via the volume control unit 8 and output as reproduced sound from the speaker unit 10.

The volume adjusting section 8 is formed of, for example, an electronic volume, and a resistance value, that is, a volume level is variably set by a control signal C _NT from the system controller 1. Therefore, the system controller 1 can always grasp the current volume output level.

When recording is performed by the MD unit 3, the audio signal to be recorded is input from the terminal 11 and the A / D converter 12 is used.
Is converted into digital data by. The digital data is supplied to the T _AI terminal of the recording mode switching circuit 13. In order to enable the dubbing recording from the CD to the MD by executing the reproducing operation of the CD section 2 and the recording operation of the MD section 3 at the same time, the reproduced audio signal S _OUTC from the CD section 2 is The recording mode switching circuit 13 is also supplied to the T _DB terminal.

The system controller 1 controls the recording mode switching circuit 13 according to the recording mode. In other words, when recording the input audio signal from the outside, the recording mode switching circuit 13 is made to select the T _AI terminal, while when dubbing recording from CD to MD is made, the recording mode switching circuit 13 is connected to the T _DB terminal. Select. Then, the digital audio data output via the recording mode switching circuit 13 is input to the MD unit 3 from the terminal 44, and MD
Predetermined encoding processing is performed in the section 3 and recorded on the MD.

The display unit 4 performs a required display operation under the control of the system controller 1. For example, CD part 2 and ND
During reproduction / recording in the section 3, the track number and the progress time are displayed, and the operation mode and the like are displayed. The operation unit 5 is provided with various operation keys so that the user can perform various operations on the CD unit 2 and the MD unit 3 and mode switching. The operation information of the operation unit 5 is input to the system controller 1, and the system controller 1 executes various control operations according to the operation information and the operation program stored in the internal ROM.

2. Structure of CD Unit The structure of the CD unit 2 is shown in FIG. A CD 90, which is a reproduction-only medium for audio data, is loaded in the CD section 2. The CD 90 is rotationally driven by the spindle motor 21 during reproduction. Then, the optical head 22 irradiates the CD 90 with laser light to extract the data recorded in the pit form on the CD 90 from the reflected light.

Therefore, the optical head 22 is equipped with a laser diode as a laser output means, an optical system including a polarization beam splitter and an objective lens, and a detector for detecting reflected light. Also the optical head 2
The objective lens which serves as a laser output end in 2 is held by a biaxial mechanism (not shown) so as to be displaceable in the disk radial direction and in the direction coming in and out of contact with the disk.
The whole 2 can be moved in the disk radial direction by a sled mechanism 23. The plate on which the spindle motor 21, the optical head 22, the sled mechanism 23, etc. are mounted is fixed to the chassis via the insulator 24 so that the influence of external vibration can be canceled to some extent. ing.

Information detected from the CD 90 by the optical head 22 by the CD reproducing operation is supplied to the RF processing section 25. The RF processing unit 25 extracts a reproduction RF signal (EFM signal), a tracking error signal, a focus error signal, and the like by calculating the supplied information. Then, the extracted reproduction RF signal is supplied to the decoder unit 28. Further, the tracking error signal and the focus error signal are supplied to the servo circuit 26. Further, the RF processing unit 25 generates a defect detection signal DF and a shock detection signal SD by a detection operation described later, and the dubbing apparatus 1
Output to

The servo circuit 9 has a tracking error signal TE and a focus error signal FE from the RF processing section 25.
In addition, a spindle kick signal, a spindle brake signal, a focus search command, a focus servo ON command, a tracking servo ON command, a track jump command, an access command, a servo gain control signal, etc. are supplied as control signals C _NT from the system controller 1. The decoder unit 28 also generates a reproduction clock from the reproduction RF signal, which is compared with the reference clock to generate the spindle error signal SPE. This spindle error signal SPE is also supplied to the servo circuit 26.

Based on these signals, the servo circuit 26 uses the focus drive signal FD, the tracking drive signal TD,
The sled drive signal SLD and the spindle drive signal SPD are generated and supplied to the servo driver unit 27. The servo driver unit 27 drives the drive coil of the biaxial mechanism by the focus drive signal FD and the tracking drive signal TD, and applies the sled drive signal SLD to the sled motor to control the sled mechanism 23. Focus and tracking control and access operations are realized by the operations of the biaxial mechanism and the sled mechanism 23. Further, when the servo driver unit 27 applies the spindle drive signal SPD to the spindle motor, the spindle motor 21 is rotationally driven at a constant linear velocity (CLV). The servo gain characteristic in each servo system is variably controlled based on the control signal C _NT from the system controller 1.

The reproduced RF signal is demodulated into a so-called digital audio signal of 16-bit quantization and 44.1 KHz sampling by being subjected to EFM demodulation and decoding such as CIRC in the decoder unit 28. This digital audio signal is supplied to the T _CD terminal of the function switching circuit 6 and the T _DB terminal of the recording mode switching circuit 13 as the reproduced audio signal S _OUTC from the terminal 29 of the CD section 2 as described above. The decoder unit 28 also extracts TOC information and subcode information read from the CD 90.
These management information SG are supplied to the system controller 1. The decoder unit 28 detects the level of the reproduced audio signal and outputs it as audio level information ALV to the system controller 1.

Here, an example of the operation of generating the defect detection signal DF and the shock detection signal SD in the RF processing section 25 will be described. When the CD 90 is scratched or a track jump occurs due to external vibration or the like, a sharp fall of the amplitude shown in FIG. 4A is observed on the reproduced RF signal. Become. This change in the reproduced RF signal will appear as a jump in the reproduced sound. Further, along with this, the focus error signal FE and the tracking error signal TE also largely change as shown in FIGS. By detecting the changes in the reproduction RF signal, the focus error signal FE, and the tracking error signal TE, it is possible to obtain a detection signal such as a scratch as shown in FIG. 4D.

Here, such changes in the reproduction RF signal, the focus error signal FE, and the tracking error signal TE are caused both when the CD 90 is scratched and when a track jump occurs due to external vibration or the like. Although observed, the frequency band of the reproduction RF signal fluctuation is different between the case of scratches and the case of external vibration. That is, fluctuations due to scratches appear in the frequency band near 1 KHz, while fluctuations due to external vibration appear in the frequency band near 300 Hz.

Therefore, the reproduction RF signal and the tracking error signal TE are injected into a bandpass filter having a center frequency of 300 Hz, and the fluctuations as shown in FIG. 4 are detected in the output, and the detection signal of FIG. 4D is generated. Then, it can be used as the shock detection signal SD which is the detection information of the external vibration. Further, if the reproduced RF signal and the tracking error signal TE are injected into a bandpass filter having a center frequency of 1 KHz, the output shown in FIG. 4 is detected, and the detection signal shown in FIG. 4D is generated. It can be used as a defect detection signal DF which becomes scratch detection information. Various other detection methods are possible.

3. Configuration of MD Unit FIG. 3 shows the configuration of the MD unit 3. The MD 91, which is a recording / playback medium for audio data, is loaded in the MD unit 3. The MD 91 is rotationally driven by the spindle motor 31 during recording / reproduction. The optical head 32 irradiates the MD 91 with a laser beam at the time of recording / reproducing, thereby performing an operation as a head at the time of recording / reproducing. That is, a high level laser output is provided for heating the recording track to the Curie temperature during recording, and a relatively low level laser output for detecting data from the reflected light due to the magnetic Kerr effect is provided during reproduction.

Therefore, the optical head 32 is equipped with a laser diode as a laser output means, an optical system including a polarization beam splitter and an objective lens, and a detector for detecting reflected light. The objective lens, which is the laser output end, is held by a biaxial mechanism so as to be displaceable in the disk radial direction and the direction in which it comes in and out of contact with the disk, and the entire optical head 32 is sled mechanism 33.
It is possible to move in the radial direction of the disk. In addition, the magnetic head 46 sandwiches the MD 91 and the optical head 32.
It is located at a position facing. This magnetic head 46
Performs an operation of applying a magnetic field modulated by the supplied data to the magneto-optical disk. The magnetic head 46 is movable in the disk radial direction together with the optical head 32 by the sled mechanism 33.

Since the plate on which the spindle motor 31, the optical head 32, the sled mechanism 33, etc. are mounted is fixed to the chassis via the insulator 34, the influence of external vibration can be canceled to some extent. Is being done.

By the reproducing operation, the information detected from the MD 91 by the optical head 32 is supplied to the RF processing section 35. The RF processing unit 35 calculates the reproduced RF signal (EFM signal), the tracking error signal, the focus error signal, and the groove information (MD91) by calculating the supplied information.
(Absolute position information recorded as a pre-groove (wobbling groove)) is extracted. Then, the extracted reproduction RF signal is supplied to the encoder / decoder unit 38. The tracking error signal and the focus error signal are supplied to the servo circuit 36, and the groove information is supplied to the address decoder 39 for demodulation. The address information decoded from the groove information and the address information recorded as data and decoded by the encoder / decoder unit 38 are output to the system controller 1 as management information SG.

In the servo circuit 36, the tracking error signal TE and the focus error signal F from the RF processing unit 35 are sent.
In addition to E, the control signal C _NT from the system controller 1 is a spindle kick signal, a spindle brake signal,
A focus search command, a focus servo ON command, a tracking servo ON command, a track jump command, an access command, etc. are supplied. Further, the encoder / decoder unit 38 generates a reproduction clock from the reproduction RF signal, which is compared with the reference clock to generate the spindle error signal SPE. This spindle error signal SP
E is also supplied to the servo circuit 36.

Based on these signals, the servo circuit 36 uses the focus drive signal FD, the tracking drive signal TD,
The sled drive signal SLD and the spindle drive signal SPD are generated and supplied to the servo driver unit 37. The servo driver unit 37 drives the drive coil of the biaxial mechanism by the focus drive signal FD and the tracking drive signal TD, and applies the sled drive signal SLD to the sled motor to control the sled mechanism 33. Focus and tracking control and access operations are realized by the operations of the biaxial mechanism and the sled mechanism 33. Further, when the servo driver unit 37 applies the spindle drive signal SPD to the spindle motor, the spindle motor 31 is rotationally driven at a constant linear velocity (CLV).

The reproduced RF signal is sent to the encoder / decoder unit 3
In step 8, EFM demodulation and decoding such as CIRC are performed, and the data is temporarily written in the buffer RAM 41 by the memory controller 40. The reading of data from the MD 91 by the optical head 32 and the transfer of the reproduced data from the optical head 32 to the buffer RAM 41 are performed at 1.41 Mbit / sec.

The data written in the buffer RAM 41 is read out at a timing when the reproduction data is transferred at 0.3 Mbit / sec and is supplied to the encoder / decoder section 42. The memory controller 40 is the system controller 1
Based on the operation control signal C _NT from the buffer RAM 41
Write / read operation of. The TOC information read from the MD 91 will be stored in the buffer RAM 41, but the TOC information stored in the buffer RAM 41 will be stored in the buffer RAM 41.
The C information and the management information SG serving as status information such as the amount of data stored in the buffer RAM 41 and other status information are supplied to the system controller 1.

In the encoder / decoder section 42, the data read from the buffer RAM 41 is modified D
Playback signal processing such as decoding processing for audio compression by CT processing is performed, and demodulation is performed to a so-called digital audio signal state of 16-bit quantization and 44.1 KHz sampling. This digital audio signal is supplied to the T _MD terminal of the function switching circuit 6 as the reproduced audio signal S _OUTM from the terminal 43 of the MD unit 3 as described above.

When the recording operation is performed on the MD 91, the digital audio signal is supplied to the terminal 44 via the recording mode switching circuit 13 as described above. The recording signal supplied to the terminal 44 is supplied to the encoder / decoder unit 42 and subjected to audio compression encoding processing.
That is, the modified DCT processing compresses the data amount to about 1/5. At this time, the encoder / decoder unit 42 can detect the volume level of the input recording signal and supply it to the system controller 1 as audio level information ALV.

The recording data compressed in the encoder / decoder unit 42 is once written in the buffer RAM 41 by the memory controller 40, read out at a predetermined timing and sent to the encoder / decoder unit 38. Then, after being subjected to encoding processing such as CIRC encoding and EFM modulation in the encoder / decoder section 38, it is supplied to the magnetic head drive circuit 45. The magnetic head drive circuit 45 supplies a magnetic head drive signal to the magnetic head 46 in accordance with the encoded recording data. That is, the magnetic head 46 applies the magnetic field of N or S to the MD 91. At this time, the system controller 1 also supplies the control signal C _NT to the optical head 32 so as to output the laser beam of the recording level.

4. Defect handling process at the time of dubbing C in the recording apparatus of the present embodiment configured as described above
A process when a reproduction error due to a scratch on the CD 90 occurs during dubbing recording from the D90 to the MD 91 will be described. When there is a scratch on the CD 90, the reproduced RF signal is disturbed as described with reference to FIG. 4 due to the scratch, which causes skipped sound. Since the reproduced sound is recorded in MD91 when dubbing, CD9
When the reproduced sound has a skipped sound due to the scratch on the 0 side, the sound is recorded in the MD 91 as it is, that is, the sound is not properly dubbed.

It is effective to reduce the servo gain in order to prevent the sound skip due to scratches, that is, the tracking out of focus and the out of focus. However, the servo gain is set so that a stable reproducing operation is executed in a normal state. Because
If the servo gain is always kept low, the servo operation in the normal state becomes unstable. Therefore, in this embodiment, the system controller 1 controls the operation corresponding to the scratch by the processing of FIG.

Playback in the CD section 2 and MD
During the dubbing in which the recording operation is performed in the section 3, the system controller 1 sets and controls the servo gain in the normal state for the servo circuit 26 (F101). The servo gain characteristic and the phase characteristic in the normal state are set as shown in FIG. 5, for example. And system controller 1
Is C from the subcode information obtained from the decoder unit 28.
Monitoring the continuity of addresses of D90 playback data
(F102). If sound skipping occurs due to scratches or disturbance,
On the address of the reproduction data, the discontinuity of the address is detected.

When the address discontinuity is detected, the system controller 1 determines whether or not the defect detection signal DF is obtained (F103). If the defect detection signal DF is obtained here, it can be determined that the sound skip is caused by a scratch on the CD 90. Therefore, the servo circuit 26 is instructed to decrease the servo gain as shown in, for example, FIG. 5 (F104), and the reproduction retry operation is executed with the servo gain lowered (F105).

Although the retry operation is shown in FIG. 9, basically, the reproducing operation at the position including the point where the address discontinuity occurs is redone. At the same time, a recording operation is being performed in the MD section 3, and at this time, voice data with discontinuous addresses is recorded. Therefore, this retry processing means that the recording retry of the MD section 3 is also executed. Become. If the defect detection signal DF is not obtained in step F103, it is determined that the skipped sound is caused by another cause, and the retry operation is directly performed (F103 → F105). However, the case of the skipped sound caused by disturbance or the like will be described later with reference to FIG. 7.

An example of retry processing in step F105 will be described with reference to FIG. FIG. 9A is a process for the CD unit 2, FIG.
(B) shows the processing for the MD unit 3. First the CD
For the section 2, the system controller 1 causes the optical head 22 to access the head position of the track (song) including the location where the address discontinuity occurs (F401). on the other hand,
At this time, the MD unit 3 is also interrupted in the recording operation, and the optical head 32 and the magnetic head 46 are made to access the head position of the currently recorded track, that is, the recording portion of the tune in which the skip has occurred ( F411).

Then, the CD section 2 starts reproduction from the head position of the track (F402), and the MD section 3 executes recording from the head position of the track (F412). In other words, CD
For the track where the skip occurs on the side, the dubbing will be restarted from the beginning of the song.

In this way, the retry operation proceeds, and if the skipped sound is not detected at the place where the skipped sound is generated (F403 → YES, F413 → YES), the retry is successful and the normal processing is returned to. The dubbing operation continues as it is. That is, in the process of FIG. 6, the process returns to step F101, the servo gain is returned to the normal state, and the dubbing is continued.

However, when the address discontinuity occurs again, that is, the skipped sound is generated even by the retry operation, the system controller 1 stores the track number of the track (F403 → F404), and the CD section 2 receives the optical signal. Access the head 22 to the beginning of the next track (F40
5) Then, the reproduction operation of the CD 90 is continued from that position. For the MD unit 3, recording is continued as it is, but C
As the optical head 22 of the D section 2 is accessed, the audio data supplied after that timing is recorded and managed as the next track.

By the above processing, when the skipped sound is generated due to the scratch on the CD 90, the servo gain is lowered and the retry operation is executed. As a result, the CD unit 2 at the time of the retry is executed. As a reproducing operation, it becomes difficult to follow a scratch, and the possibility of extracting reproduced data without skipped sound becomes extremely high. Therefore, the failure of dubbing is rarely left on the MD 91 as it is.

5. Shock-Responsive Processing During Dubbing In the recording apparatus of this embodiment, CD90 to MD9
When the dubbing recording is performed on No. 1, the retry operation eliminates the dubbing failure even when a reproduction error caused by external vibration applied to the CD 90, disk surface wobbling, eccentricity, or the like occurs. When the reproduced RF signal is disturbed as described with reference to FIG. 4 due to external vibration or the like, this causes sound skipping. Since the reproduced sound is recorded in the MD 91 at the time of dubbing, if a skipped sound is generated in the reproduced sound due to external vibration, it is directly recorded in the MD 91.
Will be recorded, that is, proper dubbing of sound will not be performed.

Contrary to the case where the sound is skipped due to scratches, it is effective to increase the servo gain in order to prevent out-of-tracking and out-of-focus caused by external vibrations.
For example, assuming that the high frequency component of the external vibration is attenuated by the action of the insulator 24, it is effective to increase the low frequency gain of the focus servo and the tracking servo with respect to the external vibration. Further, it is effective to increase the low-frequency gain of the focus servo for surface wobbling and increase the low-frequency gain of the tracking servo for eccentricity.

Therefore, in this embodiment, the system controller 1 performs the operation control corresponding to the external vibration and the like by the processing of FIG. During the dubbing in which the CD section 2 reproduces and the MD section 3 executes the recording operation, the system controller 1 sets and controls the servo gain in the normal state for the servo circuit 26 (F
201). The servo gain characteristic and the phase characteristic in the normal state are set as shown in FIG. 5, for example.

Then, the system controller 1 monitors the continuity of the address of the reproduction data of the CD 90 from the subcode information obtained from the decoder section 28 (F202). As described above, when a skipped sound occurs due to a scratch or a disturbance, it is detected as an address discontinuity on the address of the reproduction data. When the address discontinuity is detected, the system controller 1 determines whether or not the shock detection signal SD is obtained (F203). When the shock detection signal SD is obtained here, it can be determined that the sound skip is caused by external vibration or the like. Therefore, the servo circuit 26 is instructed to increase the servo gain as shown in, for example, FIG. 5 (F204), and the reproduction retry operation is executed with the servo gain increased (F205). The retry operation is as described with reference to FIG.

In other words, in the present embodiment, when the skipped sound is generated due to the external vibration or the like, the servo gain is increased and the retry operation is executed, whereby the reproduction operation of the CD section 2 at the time of retry. As a result, it becomes difficult to follow the external vibration, and the possibility of extracting reproduction data without skipping of sound becomes extremely high. Therefore, also in this case, the failure of dubbing is rarely left on the MD 91 as it is.

6. Sound skip prevention processing By the way, in the composite device as in the present embodiment, the speaker 10
In the case where the same is also formed in the same housing, the vibration due to the speaker output sound pressure affects as the external vibration for the reproduction operation of the CD 90. For example, when a considerably large volume is output, it is conceivable that the CD section 2 may be out of tracking and the sound may be skipped. Therefore, in the present embodiment, the sound skip prevention process as shown in FIG. 8 is executed during dubbing or CD reproduction.

While the reproduction operation in the CD section 2 is being executed by the dubbing operation or the like, the system controller 1 successively detects the audio level information ALV from the decoder section 28 or the encoder / decoder section 42 (F301).
Further, the system controller 1 controls the resistance value of the volume adjusting section 8 in response to the operation from the operating section 5, that is, always grasps the current resistance value of the volume adjusting section 8. Therefore, the current audio level information AL
The speaker output level SPL at that time can be calculated from V and the resistance value in the volume adjusting unit 8 (F302).

When the speaker output level SPL is calculated,
The speaker output level SPL is compared with a preset setting value (F303). And the speaker output level SPL
If the value does not exceed the set value, the servo gain is set to the normal state (in FIG. 5) because it is a level at which a large volume output is not made (F305). However, when the speaker output level SPL exceeds the set value, it is predicted that the vibration at that time cannot be ignored as external vibration.
The servo gain is increased as shown in FIG. 5 so that the optical head 22 is less likely to be out of tracking or out of focus due to vibration. By such a sound skip prevention process, the dubbing failure can be more effectively resolved.

7. Processing after the end of dubbing As described above with reference to FIGS. 6 to 9, in the present embodiment, the retry operation is executed after changing the servo gain when scratches or skipped sounds due to external vibration occur during dubbing. By doing so, the process of preventing the sound skip due to the speaker output sound pressure can almost eliminate the dubbing failure, but in some cases, after changing the servo gain due to a very large scratch on the CD90, etc. The skip operation may occur due to the retry operation.

As described in the retry operation of FIG. 9, in such a case, the system controller 1 stores the track number of the track for which the retry has failed and shifts to the dubbing of the next track. Two examples of processing after the dubbing for coping with the situation will be described with reference to FIGS. 10 and 11.

For tracks (songs) for which skipping cannot be eliminated even by the retry operation, at the end of dubbing, some of the songs for which the retry operation has been executed are MD91.
It has been recorded in. In other words, the song for which dubbing has failed remains on the MD 91. Therefore, FIG.
In the processing example of (3), such a song for which dubbing has failed is automatically deleted.

That is, at the end of dubbing, the system controller 1 confirms the internal RAM and confirms whether or not the track number of the track for which the retry has failed is stored.
(F501, F502). If there are any tracks that failed in retry, all such tracks are deleted (F503, F504). It should be noted that when the erasure is performed, a message to that effect is displayed on the display unit 4 to allow the user to recognize that there is a song for which dubbing has failed. In the mini disc system, the recorded tracks are managed by the user TOC.
It is carried out in the management information said to be, and the address on the MD 91 corresponding to each track number is written in the user TOC. Therefore, track erasure is U-TOC
It is only necessary to update the required part of the data.

Next, in the processing example shown in FIG. 11, the user is allowed to select whether or not to erase a song for which dubbing has failed. That is, at the end of dubbing, the system controller 1 checks the internal RAM to see if the track number of the track that has failed in retry is stored.
(F601, F602). If there is a track for which a retry has failed, such tracks are presented one by one on the display unit 4 and the user is allowed to select whether or not to delete the tracks (F603, F604). Then, when a certain track is presented, the user performs a save operation if the user wants to keep the track, while performing a delete operation if he wants to erase the track (F605). Then, only when the erase operation is performed, the system controller 1 updates the user TOC to erase the track (F606).

When there are a plurality of tracks for which retry has failed, such processing is performed for each track, and when processing is completed for all the tracks for which retry has failed,
Alternatively, if there is no track for which the retry has failed, the process ends from step F603.

In the example of FIG. 10, since the tracks for which dubbing has failed are automatically erased, there is an advantage that the user can organize the recorded contents of the MD 91 without any operation after the dubbing is completed. On the other hand, in the example of FIG. 11, since the user's intention can be confirmed, there is an advantage that the recorded contents of the MD 91 are organized according to the convenience of the user.

II. Second embodiment 1. Configuration of CD unit Next, a second embodiment of the present invention will be described. Note that this embodiment is different from the first embodiment in the configuration of the CD section 2, the other components are the same, and duplicate description is omitted.

The structure of the CD section 2 in this embodiment is shown in FIG.
Shown in. The CD of FIG. 2 described above in the CD section 2
The difference from the unit 2 is that the output of the decoder unit 28 is temporarily stored in the buffer RAM 51 via the memory controller 50, read at a predetermined timing, and output from the terminal 29 as the reproduced audio signal S _OUTC . The buffer RAM 51 is the buffer RAM in the MD unit 3 in FIG.
It has the same function as 41, that is, it is for improving the seismic function. That is, the reproduction data from the CD 90 is read out at a high speed rate, written into the buffer RAM 41, and read out and output at a low speed rate, so that a certain amount of reproduction data is always accumulated, which causes the tracking error. Even if such a situation occurs, _skipped sound does not occur in the reproduced audio signal S _OUTC .

Also in this embodiment, the processing of the servo gain is the same as that of the first embodiment. However, regarding the retry processing at the time of dubbing, only the processing on the side of the CD unit 2 is required by providing the buffer RAM 51. That is, even when the retry process is executed by the processes of FIGS. 6 and 7, the MD unit 3 side may be allowed to continue the recording operation without performing a special retry control.

2. Retry Processing The retry operation processing of this embodiment is shown in FIG. When retry processing is performed in step F105 of FIG. 6 or step F205 of FIG.
For the part 2, the optical head 22 is made to access an address position slightly before the position where the address discontinuity occurs (F
701). For example, the position immediately before the address discontinuity may be set. Then, reproduction is started from that position (F702), and reproduction data is accumulated in the buffer RAM 51.

Then, the data (data before retry) accumulated in the buffer RAM 51 is connected. That is, when the address discontinuity is correctly read by the retry operation, the data can be properly connected in the buffer RAM 51, and when the read timing is reached, the data is output (F704, F705).

That is, in this case, if an address discontinuity occurs, the discontinuity point is eliminated in the retry reproduction operation before reaching the output timing in the buffer RAM 51, and the output audio signal S from the CD section 2 is eliminated. _{The OUTC} is in the same state as when there was no address discontinuity originally. Therefore, the MD unit 3 only needs to record the supplied voice data as it is, and a special retry operation is unnecessary.

If the address discontinuity is not eliminated even by the retry operation, the tune in which skipping occurs in the MD 91 will be recorded. In this case, the track number is stored in step F706. Keep it. Then, as the processing after the dubbing is finished described in the first embodiment, the track may be automatically erased, or may be erased or saved according to the user's judgment.

The first and second embodiments as the dubbing apparatus having the CD player section and the MD player recorder section have been described above, but the present invention is the CD player section and the MD of the embodiment.
Needless to say, various modifications are possible without being limited to the configuration of the player recorder unit and the processing method of the system controller. Further, as the dubbing device of the present invention,
A device having an MD player section and an MD recorder section, DAT
It can also be realized in other forms such as a device including a player unit and an MD recorder unit. Also, the sound output sensor may detect the speaker output level to perform the sound skip prevention processing. Further, external vibration may be detected using a G sensor or the like to determine whether it is a scratch or a disturbance.

[0079]

As described above, in the dubbing apparatus of the present invention, when the address continuity determining means determines the address discontinuity in the reproducing operation of the first recording medium during the dubbing operation, the servo gain characteristic changing means is provided. The servo gain characteristic is changed by the method, and the reproducing operation of the data including at least the address discontinuity point is re-executed. By using the reproduced data by the re-execution, the continuous address data is recorded in the second recording medium in the recording unit. Even if a playback error occurs due to external vibration or scratches, in most cases, it will not be left as it is on the recording side and dubbing failure will be eliminated. Has the effect of

In particular, when the reproducing section is constructed so as to temporarily store the data read from the first recording medium in the storage means, read it at a predetermined timing and supply it to the recording section, the address discontinuity point By controlling the re-execution of the reproduction operation of the data including the data, forming the data of continuous addresses in the storage means and supplying the data to the recording section, the dubbing failure can be appropriately eliminated. Further, when re-execution of the reproduction operation of the data including the address discontinuity point is performed, the re-execution start position is controlled to the head position of the track including the address discontinuity point, and the recording operation in the recording section is performed. The dubbing failure can be properly eliminated by controlling the recording to be restarted from the beginning position of the track.
Further, if the address discontinuity point is not eliminated even after performing such a retry operation, the track can be erased as a dubbing failure so that the contents of the recorded recording medium can be easily organized. The effect also occurs.

Further, the reproducing section is provided with defect detecting means capable of detecting a defect on the first recording medium being reproduced, and the control means discriminates the address discontinuity by the address continuity discriminating means. When the presence of a defect on the first recording medium is detected by the defect detecting means, the servo gain characteristic varying means is controlled so as to reduce the servo gain, so that the sound caused by the defect such as a scratch is generated. It is possible to effectively prevent a dubbing failure due to a jump.

Further, the reproducing section is provided with a vibration detecting means capable of detecting the vibration applied to the first recording medium being reproduced, and the control means discriminates the address discontinuity by the address continuity discriminating means. In addition, when the vibration detecting means detects the state in which the first recording medium is vibrated, the servo gain characteristic varying means is controlled so as to increase the servo gain, so that the external vibration is generated. It is possible to effectively prevent the dubbing failure due to the sound skip due to the like. .

Further, by controlling the servo gain characteristic changing means to change the servo gain characteristic in accordance with the detected value of the audio output level from the speaker means, the sound skipping due to the vibration due to the speaker output is generated. The occurrence can be prevented, and this is also effective in eliminating the dubbing failure.

[Brief description of drawings]

FIG. 1 is a block diagram of a dubbing apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram of a CD section of the dubbing apparatus according to the first embodiment.

FIG. 3 is a block diagram of an MD unit of the dubbing apparatus of the embodiment.

FIG. 4 is an explanatory diagram of shock detection and defect detection of the dubbing device according to the embodiment.

FIG. 5 is an explanatory diagram of a servo gain characteristic of the dubbing device according to the embodiment.

FIG. 6 is a flowchart of a defect handling process of the dubbing apparatus according to the embodiment.

FIG. 7 is a flowchart of a shock handling process of the dubbing apparatus according to the embodiment.

FIG. 8 is a flowchart of a sound skip prevention process of the dubbing apparatus according to the embodiment.

FIG. 9 is a flowchart of a retry process of the dubbing device according to the first embodiment.

FIG. 10 is a flowchart of dubbing end processing of the dubbing apparatus according to the embodiment.

FIG. 11 is a flowchart of dubbing end processing of the dubbing apparatus of the embodiment.

FIG. 12 is a block diagram of a CD section of the dubbing apparatus of the second embodiment.

FIG. 13 is a flowchart of a retry process of the dubbing device according to the second embodiment.

[Explanation of symbols]

 1 System Controller 2 CD Section 3 MD Section 4 Display Section 5 Operation Section 22, 32 Optical Head 25, 35 RF Processing Section 26, 36 Servo Circuit 28 Decoding Section 38 Encoding / Decoding Section 40, 50 Memory Controller 41, 51 Buffer RAM 42 Encoding / decoding section 46 Magnetic head

Claims (7)

[Claims] 1. A reproducing unit capable of performing a reproducing operation on a first recording medium, and a recording capable of performing a recording operation on a second recording medium of the same type or a different type as the first recording medium. A dubbing apparatus capable of dubbing and recording reproduced data from a first recording medium onto a second recording medium, the continuity of addresses of data reproduced from the first recording medium by the reproducing unit. Address continuity discrimination means for discriminating the address, servo gain characteristic changing means capable of changing the servo gain characteristic in the servo system for executing the servo operation necessary for the reproducing operation of the reproducing section, and the address continuity discrimination during the dubbing operation. When the address discontinuity is discriminated by the means, the servo gain characteristic is changed by the servo gain characteristic changing means, and At least, the reproduction operation of the data including the address discontinuity point is re-executed, and the reproduction data by the re-execution is used so that the data having continuous addresses is recorded in the second recording medium in the recording unit A dubbing apparatus comprising: a control unit capable of performing the following. 2. The storage unit is provided in the reproduction unit, and the data read from the first recording medium is temporarily stored in the storage unit, read at a predetermined timing, and supplied to the recording unit. In addition, when the control means controls the re-execution of the reproduction operation of the data including the address discontinuity point, the reproduction data by the re-execution is used, and the continuous data of the addresses in the storage means is used. By forming and supplying to the recording unit,
The dubbing device according to claim 1, wherein data having consecutive addresses is recorded in the second recording medium in the recording unit. 3. The control means controls the re-execution start position to the head position of the track including the address discontinuity point when the reproduction operation of the data including the address discontinuity point is re-executed. The recording operation in the recording unit is controlled to restart from the head position of the track being recorded, so that the data having continuous addresses is recorded in the second recording medium in the recording unit. The dubbing apparatus according to claim 1, which is characterized in that. 4. The control means re-executes a reproducing operation of data including an address discontinuity point, and the reproduced data resulting from the re-execution causes continuous data of addresses to be recorded in a second recording medium in the recording section. If the address discontinuity point is not resolved on the second recording medium even if the recording is controlled, the track number including the address discontinuity point is stored, and the track stored at the predetermined time point is stored. The dubbing apparatus according to claim 1, wherein the dubbing apparatus is configured to be capable of executing a deletion process of track data of a number. 5. The reproducing section is provided with defect detection means capable of detecting a defect on the first recording medium being reproduced, and the control means is provided with the address discontinuity determination means by the address discontinuity determination means. And the presence of a defect on the first recording medium is detected by the defect detecting means,
2. The dubbing apparatus according to claim 1, wherein the servo gain characteristic changing means is controlled so as to reduce the servo gain. 6. The reproducing section is provided with a vibration detecting means capable of detecting vibration applied to the first recording medium being reproduced, and the control means is provided with an address discontinuity by the address continuity determining means. Is determined and the vibration detecting means detects a state in which vibration is applied to the first recording medium, the servo gain characteristic varying means is controlled to increase the servo gain. The dubbing device according to claim 1, wherein: 7. A reproducing section capable of performing a reproducing operation with respect to a first recording medium, and a recording capable of performing a recording operation with respect to a second recording medium of the same type as or different from the first recording medium. In a dubbing apparatus capable of dubbing and recording reproduced data from the first recording medium onto the second recording medium, the reproduced data from the first recording medium being output as audio during dubbing operation. Speaker means capable of detecting a sound output level from the speaker means, and changing a servo gain characteristic in a servo system for executing a servo operation necessary for a reproducing operation of the reproducing section. The servo gain characteristic changing means that can perform the servo gain characteristic changing operation according to the value detected by the audio level detecting means during dubbing operation. Dubbing apparatus characterized by being configured with a control means capable of performing control for changing the servo gain characteristic with respect.