JP2000268494A - Recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To normally dub and record a music or the like to be dubbed and recorded from a CD to an while outputting it as a minitoring sound. SOLUTION: When it is judged that the data accumulation amount of a buffer memory is a prescribed data accumulation amount or above (S102), the vibration of the MD or the like is suppressed by lowering the volume of a minitoring sound to be outputted (S108). Thus a tracking servo and a focusing servo of a recording side are not come off, when the recording data can be normally recorded on.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a recording apparatus capable of performing an operation of copying and recording program data from a recording medium to a recording medium, such as a dubbing operation of audio data.

[0002]

2. Description of the Related Art A CD (Compact Disc) is a device corresponding to a disk-shaped recording medium on which audio data is recorded.
C) Players, MD (MINI DISC) recorders / players, etc., have become widespread. And, for example, composite devices equipped with these CD players and MD recorders / players have become widespread. Such a composite device generally has a configuration in which a speaker is also integrated. Such a composite audio device generally has a function of copying music (audio data) recorded on a CD to an MD, that is, a so-called dubbing function. When dubbing is performed, the digital audio data is usually copied as it is.

When dubbing is performed from a CD (dubbing source disc) to an MD (dubbing destination disc) as an actual recording operation, reproduction data (digital audio data) read from the CD is recorded on the MD side. Transferred to the signal processing system. The MD has a buffer memory for temporarily storing recording / reproducing data, and the CD reproducing data transferred to the recording signal processing system of the MD is temporarily written to the buffer memory after compression processing, for example. . When a certain amount of recording data is accumulated in the buffer memory, the recording data stored in the buffer memory is read out at a higher bit rate than at the time of writing, and is recorded on the MD. As a result of the operation of reading data from the buffer memory and writing data to the MD, the amount of data stored in the buffer memory becomes equal to or less than a predetermined amount or becomes 0. At this point, recording on the MD is stopped. When data is accumulated for a predetermined time or more, recording is performed on the MD again. By repeating such an operation, actually, time-series continuous audio data is intermittently recorded on the MD.

[0004]

By the way, in the above-mentioned dubbing recording, a reproduced sound such as music read from a CD is output as a monitor sound from a speaker, and the user often listens to the reproduced sound. . However, when the user is performing dubbing recording while monitoring the reproduced sound from the CD, for example, when the user increases the output level of the monitor sound output from the speaker, the sound is generated by the monitor sound. The vibration is transmitted to the housing of the CD / MD composite device, and may interfere with the inside of the device, for example.

Particularly, in a CD / MD composite device in which a device body and a speaker are integrally formed, an MD (and a CD) loaded in the device and an optical head for writing recording data to the MD are supported. The mechanical deck etc. may vibrate violently. As a result, for example, when recording data is written from the optical head on the recording unit side to the MD (dubbing destination disk), the tracking servo and the focus servo of the optical head with respect to the MD are released, and the recording data may be written to the MD. It is possible that things cannot be done.

When performing dubbing recording from a CD (dubbing source disk) to an MD (dubbing destination disk), intermittent recording using a buffer memory is performed as described above. Even if a state in which the recording data cannot be written to the MD occurs, if the data recording operation to the MD is restored before the data storage amount of the buffer memory overflows, the digital audio data read from the CD is temporally lost. MD as continuous data
Can be written normally.

[0007] However, as described above, the write error to the MD that occurs with increasing the volume of the monitor sound output from the speaker occurs continuously or relatively frequently. If the total time exceeds a certain limit, the digital audio data from the CD may exceed the storage capacity of the buffer memory. In such a case, a part of the recording data to be dubbed on the MD is missing. If recorded data such as music recorded on the MD is reproduced under such conditions, the reproduced sound will skip.

For example, in an MD system, digital audio data is compressed by a predetermined method during recording and reproduction, and the compressed data is stored in a buffer memory. In particular, data such as music recorded on a CD is recorded. Is used up to near full bits (when the amount of digital audio data read from the CD is large), the compression efficiency is reduced and the amount of compressed data is increased, so that the storage rate in the buffer memory per unit time is also increased. .
For this reason, the buffer memory easily overflows, and the possibility that normal dubbing recording from the CD to the MD is not performed is increased.

[0009]

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a recording apparatus which can perform normal dubbing recording while outputting, for example, music recorded on a dubbing destination disk as monitor sound. The purpose is to provide.

Therefore, as a recording apparatus, a storage means for temporarily storing input recording data, a write control for continuously writing the input recording data to the storage means at a first transfer speed, and Storage control means for executing read control for reading out the stored recording data at a second transfer rate higher than the first transfer rate; recording means for recording the record data read from the storage means on a recording medium; Monitor output means for subjecting the recorded data to required signal processing and outputting it as monitor sound to the outside, and data accumulation for determining whether the data accumulation amount of the recorded data stored in the storage means is equal to or greater than a predetermined value. When the amount of data storage is determined to be equal to or greater than the predetermined value by the amount determination means and the data storage amount determination means, a required change is provided to the monitor sound. Signal processing because it was decided that a control means for controlling to be performed in the monitor output unit.

That is, according to the present invention, when the data storage amount determining means determines that the storage amount of the recording data stored in the storage means is equal to or more than a predetermined value, for example, the control means controls the monitor output so as to reduce the output level of the monitor sound. Perform control over the means. Accordingly, physical vibration of the device caused by the monitor sound output from the monitor output unit is suppressed, and vibration of a recording medium (dubbing destination disk), a mechanical deck, or the like loaded in the device can be suppressed. .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a recording apparatus according to the present invention will be described below using an example of a recording / reproducing apparatus as a CD / MD composite device capable of reproducing a CD and recording / reproducing an MD. FIG. 1 is a perspective view showing an example of the appearance of the recording / reproducing apparatus of the present embodiment. The CD / M of the present embodiment shown in FIG.
As shown in the figure, the D composite device 1 has a device main body 1a and speakers 53, 53 integrally formed. Main body 1a
For example, an operation unit 19 provided with various keys provided for user operation, a display unit 20 for performing a required display during a recording / reproducing operation or the like, and an MD storage unit 6 for storing the MD 90
1 and a CD storage section 62 for storing the CD 91 are provided.

FIG. 2 shows the MD of the present embodiment as described above.
2 shows a block diagram of a main part of the / CD composite device 1. FIG. In FIG. 2, an MD 90 (magneto-optical disk) is loaded in an MD unit that performs a recording / reproducing operation on the MD. MD90
Is used as a medium on which audio data can be recorded, and is rotated by a spindle motor 2 during recording / reproduction. The optical head 3 performs an operation as a head during recording / reproduction by irradiating a laser beam to the MD 90 as a magneto-optical disk during recording / reproduction. That is, at the time of recording, a high-level laser output for heating the recording track to the Curie temperature is produced, and at the time of reproduction, a relatively low-level laser output for detecting data from reflected light by the magnetic Kerr effect is produced.

For this purpose, the optical head 3 is equipped with a laser diode as a laser output means, an optical system including a polarizing beam splitter and an objective lens, and a detector for detecting reflected light. The objective lens 3a is 2
The shaft mechanism 4 is held so as to be displaceable in the radial direction of the disc and in the direction of coming into contact with and separating from the MD 90, and the entire optical head 3 is movable in the radial direction of the MD 90 by the sled mechanism 5.

The magnetic head 6a is arranged at a position facing the optical head 3 with the MD 90 interposed therebetween. The magnetic head 6a performs an operation of applying a magnetic field modulated by the supplied data to the MD 90. Magnetic head 6a
Is movable in the disk radial direction by a sled mechanism 5 together with the optical head 3.

The MD 90 is used by the optical head 3 during a reproducing operation.
Is supplied to the RF amplifier 7. RF
The amplifier 7 performs an arithmetic operation on the supplied information to reproduce RF.
A signal, a tracking error signal, a focus error signal, groove information (absolute position information recorded as a wobbling pre-groove in the MD 90) and the like are extracted.
Then, the extracted reproduction RF signal is supplied to the encoder / decoder unit 8. Also, tracking error signal,
The focus error signal is supplied to the servo circuit 9, and the groove information is supplied to the address decoder 10 and demodulated. The address information decoded from the groove information, and the address information and subcode information recorded as data and decoded by the encoder / decoder unit 8 are supplied to an MD controller 11 constituted by a microcomputer and used for various controls. . In addition, MD
The controller 11 functions as a part that executes various operation controls in the MD unit.

The servo circuit 9 generates various servo drive signals based on the supplied tracking error signal, focus error signal, track jump command and access command from the MD controller 11, information on the detection of the rotational speed of the spindle motor 2, and the like. The focus and tracking control is performed by controlling the shaft mechanism 4 and the sled mechanism 5, and the spindle motor 2 is controlled at a constant linear velocity (CLV).

The reproduced RF signal is supplied to an encoder / decoder unit 8
After decoding processing such as EFM demodulation and CIRC in the buffer memory 13 once by the memory controller 12
Is written to. The reading of data from the MD 90 by the optical head 3 and the transfer of reproduced data in the system from the optical head 3 to the buffer memory 13 are 1.41 Mbit.
/ sec and intermittently.

The buffer memory 13 is composed of, for example, a ring buffer, and the data written in the buffer memory 13 is read out at the timing when the transfer of the reproduction data becomes 0.3 Mbit / sec.
Supplied to Then, reproduction signal processing such as decoding processing for the audio compression processing is performed, and 16-bit quantization is performed.
4.1KHz sampling audio data. And D
After being an analog signal by / A converter 15, it is supplied to the terminal T _MD of the switching circuit 50. During reproduction of MD 90, which is controlled so that the switching circuit 50 by the system controller 21 for controlling the operation of the entire apparatus is connected to the terminal T _MD, thus the encoder / decoder unit 14
The reproduced audio signal output from the D / A converter 15 and converted into an analog signal is supplied to an analog audio signal processing unit 51 and a power amplifier 52 via a switching circuit 50.
The reproduced sound is output from the speaker 53.

Writing / reading of data to / from buffer memory 13 is performed by addressing the memory controller 12 under the control of a write pointer and a read pointer. , A certain amount of data is always stored in the buffer memory 13. By outputting the reproduced audio signal through the buffer memory 13 in this manner, even if tracking is lost due to disturbance or the like, the output of the reproduced audio is not interrupted, and the data stored in the buffer memory 13 remains. During this operation, for example, by accessing a correct tracking position and resuming data reading, the operation can be continued without affecting the reproduction output. That is, the anti-vibration function can be significantly improved.

In this recording / reproducing apparatus, a digital interface 54 is provided, and the reproduced data decoded by the encoder / decoder 14 at the time of reproduction is also supplied to the digital interface 54. The digital interface 54 encodes a data stream of a predetermined digital interface format using reproduction data and sub-code information extracted at the time of reproduction, and outputs the encoded data stream from a digital output terminal 56. For example, it is output as optical recording data. That is, the playback data is
Digital data can be output to external devices as it is.

When a recording operation is performed on the MD 90, the recording signal (analog audio signal) supplied to the analog input terminal 17 is subjected to 16-bit quantization and 44.1 kHz sampling by the A / D converter 18. After being converted into digital data, the data is supplied to the encoder / decoder unit 14 and subjected to audio compression encoding processing for compressing the data amount to about 1/5. Further, data captured via the digital interface 54 can be recorded in the MD 90. That is, a signal (a signal in a digital interface format) supplied from an external device to the digital input terminal 55 is decoded by the digital interface 54, and audio data and subcodes are extracted. At this time, control information such as a subcode is supplied to the system controller 21, and audio data (digital data of 16-bit quantization, 44.1 KHz sampling) as recording data is supplied to the encoder / decoder unit 14, and the data amount is reduced to about 1 / 5 is subjected to audio compression encoding processing.

For the MD 90, a CD to be described later is used.
The digital audio data reproduced from the CD 91 can also be recorded in the section. This is so-called CD / MD dubbing recording. In this case, the digital audio data (16-bit quantized, 44.1 KHz sampling digital data) reproduced from the CD 91 is supplied to the encoder / decoder unit 14, and the audio compression encoding process for compressing the data amount to about 1/5 is performed. Will be applied.

The digital audio data compressed by the encoder / decoder section 14 is temporarily taken into the buffer memory 13 by the memory controller 12 as recording data at a writing speed of, for example, 0.3 Mbit / sec. By reading at a reading speed higher than the speed, for example, 1.44 Mbit / sec, reading is performed intermittently and sent to the encoder / decoder unit 8. After being subjected to encoding processing such as CIRC encoding and EFM modulation in the encoder / decoder section 8, the encoded data is supplied to the magnetic head drive circuit 6 for writing data to the MD 90.

The magnetic head drive circuit 6 supplies a magnetic head drive signal to the magnetic head 6a according to the encoded recording data. That is, the magnetic head 6a applies an N or S magnetic field to the MD 90. At this time, the MD controller 11 supplies a control signal to the optical head 3 so as to output a laser beam at a recording level.

In this recording / reproducing apparatus, a reproducing system corresponding to a CD is further formed. The CD 91, which is a read-only optical disk, is loaded in a CD section for performing a CD reproducing operation. The CD 91 is driven to rotate at a constant linear velocity (CLV) by the spindle motor 31 during a CD reproducing operation. Then, data recorded in a pit form on the CD 91 is read out by the optical head 32, and the RF amplifier 3
5 is supplied. The objective lens 3 in the optical head 32
2a is held by a two-axis mechanism 33, and can be displaced in the tracking and focus directions. The optical head 32 can be moved in the radial direction of the CD 91 by a thread mechanism 34.

In the RF amplifier 35, in addition to the reproduced RF signal,
A focus error signal and a tracking error signal are generated, and these error signals are supplied to the servo circuit 36. The servo circuit 36 generates various drive signals such as a focus drive signal, a tracking drive signal, a sled drive signal, and a spindle drive signal from the focus error signal and the tracking error signal.
4, and control the operation of the spindle motor 31.

The reproduced RF signal is supplied to a decoder 37. The decoder 37 performs EFM demodulation, CIRC decoding, and the like, and decodes the information read from the CD 91 into 16-bit quantized, 44.1 KHz sampling digital audio data. The decoder 37 also extracts control data such as TOC and subcode, which are supplied to the system controller 21 and used for various controls.

The digital audio data outputted from the decoder 37 is an analog signal by a D / A converter 38, is supplied to the terminal T _CD to the switch circuit 50. During the CD reproduction operation, the system controller 21 causes the switching circuit 50 to select the terminal TCD. Therefore, the reproduced audio signal reproduced from the _CD 91 and converted into an analog signal by the D / A converter 38 is converted into an analog signal through the switching circuit 50. The audio signal processing unit 51 and the power amplifier 52
Is output as a playback sound. The digital audio data output from the decoder 37 is supplied to the digital interface 54 so that the digital output terminal 5
6 can output digital reproduction data CD reproduction data to an external device.

The digital audio data (C
D playback data) can be dubbed and recorded on the MD 90. In that case, the digital audio data output from the decoder 37 is directly encoded and decoded by the encoder / decoder 14.
Will be supplied. Also in this case, the digital audio data output from the decoder 37 is converted into an analog signal by the D / A converter 38 and supplied to the analog audio signal processing unit 51 via the switching circuit 50. The analog audio signal processing unit 51
Is a part for adjusting required signal characteristics such as volume and sound quality (frequency band) with respect to an audio signal as an analog signal. The audio signal output from the analog audio signal processing unit 51 is supplied to a power amplifier 52 so that it can be output from a speaker 53 as reproduced audio (monitor audio).

In this embodiment, a digital audio signal processing unit (hereinafter, referred to as a broken line in the figure) is used as a functional circuit unit instead of the analog audio signal processing unit 51.
"DSP; Digital Signal Processor") 3
9 can be provided. DSP39 in this case
Is provided on a path on which the output of the decoder 37 on the CD side is branched and supplied to the switching circuit 50 side, for example, as shown in the figure, and is provided before the D / A converter 38 here. I have. The DSP 39 performs a predetermined process on the digital audio data supplied from the decoder 37 on the CD side under the control of the system controller 21 to, for example, output level and frequency characteristics of the reproduced audio output from the speaker 53. It is made to be variable by digital signal processing.

The system controller 21 is a microcomputer for controlling the entire apparatus. The system controller 21 gives various instructions to the MD controller 11 to cause the MD controller 11 to control the operation of the MD unit. Further, at the time of recording / reproduction of the MD 90, management information such as a subcode is received from the MD controller 11. For the CD section, for example, the system controller 21 directly controls the operation.

At the time of recording, the system controller 21 controls the MD controller 1 as described later.
The signal processing operation of the analog audio signal processing unit 51 is controlled in accordance with the amount of data stored in the buffer memory 13 monitored at 1. Or the DSP mentioned earlier
When the DSP 39 is provided, the DSP 39 is configured to control the signal processing operation.

The form of such a control system is merely an example. For example, a CD controller for controlling the CD side may be provided, or the system controller 21 and the MD controller 11 may be integrated. A configuration may be adopted.

The operation unit 19 is provided with a recording key, a reproduction key, a stop key, an AMS key, a search key, a dubbing key, and the like so as to be operated by a user.
A reproduction / recording operation relating to D91 can be performed. Although not described in detail, a character string for recording accompanying data such as a track name on the MD 90, a registration determination operation, a registration mode operation, and the like can be performed. Operation information from the operation unit 19 is supplied to the system controller 21, and the system controller 21 executes required operations for each unit based on the operation information and the operation program. Although not shown, the operation unit 19 may have a remote operation function using, for example, an infrared remote commander.

The display section 20 performs a required display operation when the MD 90 or the CD 91 is reproduced or recorded. For example, time information such as total playing time, progress time during reproduction and recording, and various displays such as track number, operation state, and operation mode are performed based on the control of the system controller 21. In the recording / reproducing apparatus of this example configured as above, the MD reproducing operation, the MD recording operation, the CD reproducing operation,
D / MD dubbing operation can be performed.

Here, transition of the amount of data stored in the buffer memory 13 when performing CD / MD dubbing recording in the recording / reproducing apparatus of the present embodiment will be described with reference to FIG. When dubbing the CD playback data on the MD 90, the digital audio data output from the decoder 37 on the CD side is directly supplied to the encoding / decoding unit 14 on the MD side, as described above. The unit 14 performs a predetermined compression process. Then, the data is temporarily loaded into the buffer memory 13 by the memory controller 12 as recording data.

As described above, the recording data output from the encoder / decoder section 14 is continuously written into the buffer memory 13 at a writing speed of, for example, 0.3 Mbit / sec under the control of the memory controller 12. . On the other hand, for example, 1.
The data is read out intermittently at a read speed of 44 Mbit / sec and sent to the encoder / decoder unit 8.

Such an operation is shown in FIG.
This is shown as a transition between (b). As shown in FIG. 3A, for example, it is assumed that continuous writing of recording data is started at a writing speed of 0.3 Mbit / sec from a state where the amount of data stored in the buffer memory 13 is 0. At this time, it is assumed that data reading from the buffer memory 13 has not been started. Therefore, data is accumulated in the buffer memory 13 at a bit rate of 0.3 Mbit / sec. As a result, in the buffer memory 13, the data storage amount X is obtained at a certain stage as shown by hatching in FIG. 3B.

Here, as the data storage amount X stored in the buffer memory 13, for example, even if a state in which writing to the MD 90 becomes impossible with a certain range of frequency occurs, What is necessary is just to set in accordance with the data capacity of the extent that overflow does not occur, but the minimum value is the minimum recording data unit in the MD system called “cluster”.

Then, the buffer memory 1
For example, when the data storage amount X is obtained as the data storage state in Step 3, the operation of reading out the recording data stored in the buffer memory 13 at a transfer rate of 1.44 Mbit / sec and transferring the read data to the encoder / decoder unit 8. Is performed. Then, the encoder / decoder unit 8 records the transferred data in the MD 90.

In this case, as the write / read operation to / from the buffer memory 13, the read speed is higher than the write speed. The amount becomes 0 (or almost zero). That is,
The state shown in FIG. 3B returns to the state shown in FIG. When this state is reached, the read operation from the buffer memory 13 is stopped. In this way, the buffer memory 13 stores the data in the buffer memory 13 in the same manner as at the start of the data write described above. A state where data is accumulated again from the state where the data accumulation amount is 0 is obtained. Thus, FIG.
By repeating the transition of the operation between (a) and FIG. 3 (b), data is read out intermittently from the buffer memory 13, so that data recording to the MD 90 is also performed intermittently. It will be done. This is the basic operation of the buffer memory 13 during recording.

Such intermittent recording is also performed to obtain vibration resistance during recording, as in the case of reproduction. In other words, the servo comes off due to some disturbance, etc.
Even in a situation in which recording on the MD 90 is not possible, if the recording capacity on the MD 90 is restored before the storage capacity of the buffer memory 13 overflows, data recording with time series can be performed. It is what becomes. Conversely, in a state where recording is properly performed without any particular disturbance, in the buffer memory 13, FIG.
The transition is within the range of the data accumulation amount as shown in (b).

However, in the recording / reproducing apparatus according to the present embodiment in which the main body 1a and the speaker 53 are integrally formed, a factor such as a servo error that makes writing to the MD 90 impossible becomes impossible. Vibration due to output monitor sound cannot be ignored. For example, speaker 53
When the CD / MD dubbing operation is performed while the monitor sound is output from the monitor sound (for example, the monitor sound is a tune and the volume of a specific musical instrument or the like) is output from the speaker 53, If the output level is appropriately high, the vibration of the speaker 53 will be transmitted to the housing (mechanical deck) of the recording / reproducing device. Due to this vibration, for example, the MD 90 is shaken or the MD side optical head 3
Vibration occurs on the side, resulting in a servo error and MD
A state may occur in which recording on the H.90 cannot be performed.

When a state occurs in which recording on the MD 90 cannot be performed for some reason, the memory controller 12 does not transfer the recording data stored in the buffer memory 13 to the encoder / decoder section 8. However, if the state in which the recording data cannot be written to the MD occurs frequently or continues, the data writing amount exceeds the data reading amount within a certain unit time. In FIG.
It will increase beyond the data accumulation amount X shown in (b).

Here, if the amount of data stored in the buffer memory 13 exceeds the memory capacity of the buffer memory 13, for example, the memory controller 12 sets the encoder / decoder 14 to the area where the recording data is already stored.
Overwrites the new recording data supplied from. Alternatively, the reading (writing) of the recording data from the encoder / decoder unit 14 to the buffer memory 13 is stopped.

As a result, a lack of temporal continuity of the recording data stored in the buffer memory 13 occurs. Therefore,
This data is transmitted to the MD 9 via the encoder / decoder 8.
If the recording is performed at 0, the recorded data recorded on the MD 90 will be interrupted.

Therefore, in order to avoid such inconveniences, in the recording / reproducing apparatus of the present embodiment, a state in which data cannot be written to the MD 90 occurs frequently or continuously, for example, as shown in FIG. As shown in FIG. 3C, when it is determined that the data storage amount of the buffer memory 13 has reached, for example, the data storage amount Y, as described below,
A corresponding process of lowering the volume of the monitor sound to a predetermined level is performed.

Here, as for the specific value of the data storage amount Y, an appropriate value differs depending on the capacity of the buffer memory 13, so that it is not mentioned here, but the data storage amount Y and the data storage amount X As (Y>
X), the relationship may be set as follows.

For example, the data storage amount Y is such a storage amount that data can be read from the buffer memory 13 due to the vibration of the monitor sound output from the speaker 53 and the data cannot be written to the MD 90. That is, one condition is that the data storage amount is larger than the data storage amount X.

As another condition, when the data storage amount Y is reached, the volume of the monitor sound is lowered as described above, so that a stable MD
The operation of writing data to the memory 90 (reading data from the buffer memory 13) is to be resumed. However, the overflow in the buffer memory 13 does not occur due to the increase in the amount of data accumulated until the operation returns to the stable state. Is required to be a guaranteed data storage amount.

Then, the accumulated amount of the buffer memory 13 becomes
The operation when the data accumulation amount Y is reached is roughly as follows. For example, the system controller 21 sets the data storage amount Y in the buffer memory 13 as the data storage amount Y.
When it is determined that the above has occurred, the vibration generated by the output level of the monitor sound output from the speaker 53 causes M
It is assumed that recording data cannot be written to D90.

Therefore, in this embodiment, the MD 90
The output level (volume) of the monitor sound that is not necessary for dubbing recording to the MD
The control is performed so as to reduce the recording to the extent that recording to the 90 is not impossible. For this purpose, the system controller 21 controls the analog audio signal processing unit 51 to attenuate the level of the monitor audio signal, or
The SP 39 is controlled to attenuate the audio signal level at the stage of the digital signal.

It is to be noted that the level of the sound volume of the monitor sound is attenuated.
As an example, the following can be considered. That is,
A certain specific sound volume (output level) that is appropriate within a range that guarantees that a state in which data can be written to a normal MD can be maintained is confirmed in a design stage. When the data storage amount is equal to or larger than the data storage amount Y based on the trial result in this design stage, the system controller 21 executes control to keep the output level constant at the design stage as described above. It constitutes.

As a result, the vibration caused by the reproduced sound output from the speaker 53 is reduced, and the state in which the recording data cannot be written to the MD 90 is eliminated, and the recording data stored in the buffer memory 13 is written to the MD 90. The operation can be restored. Thereafter, for example, it is possible to return to a stable recording operation in which the state transitions between FIG. 3A and FIG. 3B. In this way, the amount of data stored in the buffer memory 13 is prevented from exceeding the storable capacity of the buffer memory 13, and it is possible to prevent the recording data recorded on the MD 90 from being lost.

When the control for lowering the volume of the monitor sound is executed as described above, for example, the user is warned that the volume of the monitor sound is too large to record the recording data on the MD 90. Is preferably displayed on the display unit 20. By watching such a warning display, for example, even if the volume of the monitor sound suddenly decreases while listening to the monitor sound, the user can take measures to properly record data in the MD 90. It is something that can be confirmed and confirmed.

In this embodiment, the audio data reproduced by the CD unit is supplied directly from the decoder 37 to the MD unit as recording data. Also, as a signal processing path for the monitor audio, the audio data reproduced from the CD section output from the decoder 37 is branched and directly input. That is, in the subsequent stage of the decoder 37, M
It can be seen that the signal path of the recording data to be supplied to the D section and the signal path for the monitor audio output are independent of each other. Then, a part (analog audio signal processing unit 51 or DSP 39) that performs signal processing such as variable volume on the monitor audio signal is inserted into the signal path for outputting the monitor audio. . Therefore, for example, even if the volume of the monitor audio is changed during recording, there is no inconvenience that the volume of the digital audio data supplied to the MD unit is changed accordingly.

FIG. 4 shows a processing operation executed by the system controller 21 (and the MD controller 11) when a CD / MD dubbing operation is performed, which is a characteristic operation of the present embodiment described above. This will be described with reference to the flowchart shown in FIG. In the following description, the amount of data stored in the buffer memory 13 is referred to as data storage amount data.

When recording as a CD / MD dubbing operation is started in the CD / MD composite device of the present embodiment, first, as shown in step S101, control is performed on the memory controller 12, and the CD unit is controlled. CD91
Then, the operation of taking in the digital audio data read and compressed into the buffer memory 13 is started, and then the process proceeds to step S102. Thereafter, continuous data writing to the buffer memory 13 is continuously performed.

In step S102, the buffer memory 1
3 is monitored, and the data storage amount d is monitored.
data is determined (see FIG. 3C).
If the data storage amount data is not equal to or more than the predetermined data storage amount Y, the process proceeds to step S103, where it is determined whether or not the data storage amount data ≧ X in the buffer memory 13 is satisfied (see FIG. 3B). ).

If the data storage amount data in the buffer memory 13 is not equal to or larger than X, the process returns to step S102. As a result, as shown in the transition from FIG. 3A to FIG. 3B, the data write operation is performed after waiting for data reading until the data accumulation amount data ≧ X in the buffer memory 13 is satisfied. Will be done.

On the other hand, if it is determined in step S103 that the data accumulation amount data ≧ X in the buffer memory 13, the process proceeds to step S104, where the system controller 21 checks whether or not recording data can be written to the MD 90. In other words, for example, the tracking servo or focus servo is deviated due to disturbance such as vibration,
It is checked whether writing to the MD 90 has been disabled. As a method of this check, it is only necessary to monitor whether or not the MD controller 11 properly detects address information on the operation of the address decoder 10. This means that the tracking servo or focus servo is off and writing (or reading) to MD90
Is disabled, the fact that the address decoder 10 cannot obtain an appropriate address decode result is used.

When it is determined that writing to the MD 90 is possible, the process proceeds to step S105, for example, where the recording data stored in the buffer memory 13 is read, and
A process for writing to the MD 90 is executed. At this time, as described above with reference to FIG. 3, reading is performed until the data accumulation amount data = 0 in the buffer memory 13.

When the amount of data stored in the buffer memory 13 becomes data = 0, data reading from the buffer memory 13 and writing of data to the MD 90 are completed. Then, the process proceeds to the next step S106. In step S106, it is determined whether dubbing recording to the MD 90 has been completed. Here, for example, the reproduction on the CD side is ended, and all the reproduction data of this CD 91 is M
The dubbing recording ends when data is written to D90. If it is determined in this step S106 that the dubbing recording from the CD 91 to the MD 90 has been completed, the recording process is completed, and if not, the process returns to the processes in and after step S102.

Then, steps S102 to S1
06 is repeatedly executed by the system controller 21 (MD controller 11),
While the digital audio data read from D91 is continuously stored as recording data in the buffer memory 13 of the MD section, the stored data storage amount d of the buffer memory 13
An intermittent recording operation corresponding to normal times, such as writing recording data to the MD 90 at the time when ata ≧ X is realized.

When such a recording operation is being performed,
For example, if a device or the like vibrates due to the monitor output from the speaker 53 and a state in which the recording data cannot be written to the MD 90 occurs due to the vibration, it is determined in step S104 that the writing to the MD 90 is not possible. The process of returning to step S102 again after steps S102 to S104 is frequently executed. In this process, step S1
Since the writing of data to the MD 90 (reading from the buffer memory 13) by 05 is not performed, the data accumulation amount data of the buffer memory 13 gradually increases. Then, at a certain stage, in step S102, the data accumulation amount data ≧
Y will be determined.

In this case, the process proceeds to step S107,
For example, display control is performed to cause the display unit 20 to display a warning display indicating that the volume is high for the user and that the recording operation is hindered. In the next step S108, the analog audio signal processing unit 51 (or DSP 39) is controlled to lower the level of the monitor output output from the speaker 53 to a predetermined level at which writing to the MD 90 is not disabled. Control to maintain a predetermined level is performed. After that, the processes after step S103 are executed.

Then, from step S108 to step S108
At the stage where step S104 is reached after passing through MD 103, MD
If it is determined that data writing to 90 is possible,
Reading from the buffer memory 13 in step S105 and writing to the MD 90 are restarted. Thereafter, as a normal operation described above, the process returns to the state in which the processes of steps S102 to S106 are repeatedly executed.

The reason why the MD90 is remarkably vibrated by the monitor sound is that the vibration of the speaker 53 is transmitted to the inside of the device, and the monitor sound vibration is caused by the natural vibration of the MD90 disk itself or the housing as a disk cartridge for protecting the disk. It can be thought of as being in resonance with the number.

Therefore, for example, instead of lowering the output level of the monitor sound, it is conceivable to change the frequency band including the natural frequency of, for example, the disk or disk cartridge constituting the MD 90. That is, for example, in the DSP 39 shown in FIG. 2, the amplitude level of the frequency band component including the natural frequency of the disk or the disk cartridge included in the digital audio data is reduced or the frequency band component is removed. Thereby, without lowering the output level of the monitor sound output from the speaker 53, it is also possible to suppress the vibration of the MD 90 or the like and to return to the stable writing operation to the MD 90.

In the analog audio signal processing section 51, a function such as an equalizer for the analog audio signal is provided to similarly remove a frequency band component including a natural frequency of a disk, a disk cartridge or the like. ,
The same effect can be obtained by lowering the amplitude level. It is also conceivable to use both the control of the sound volume and the above-described variable control of the frequency band.

In the present embodiment, the CD portion is
The CD / MD dubbing recording in which the audio data reproduced from D91 is recorded on the MD 90 of the MD section has been described as an example. For example, an analog audio signal supplied to the analog input terminal 17 or a digital signal supplied to the digital input terminal 55 It goes without saying that the present invention can also be applied to a case where the signal of the interface format is recorded on the MD 90 by the MD unit while being output as the monitor sound.

In the description of the above embodiment,
It is assumed that the reproduction on the CD section is performed at 1 × speed, but it is also conceivable that the reproduction on the CD section is performed at a predetermined double speed higher than 1 × speed during the dubbing operation. In this case, the write operation to the MD 90 on the MD unit side depends on the reproduction double speed on the CD unit side. However, the write operation at 1 × speed is sufficient, and the double speed higher than 1 × speed is set. Write operation.

Here, let us consider a case where reproduction on the CD unit side is performed at a predetermined multiple speed higher than 1 × speed, and a write operation at 1 × speed is performed on the MD unit side. As the transfer speed increases, the processing clock until data is written to the buffer memory 13 also increases according to the double speed on the CD unit side. Therefore, if CD playback at double speed is performed, the writing speed to the buffer memory 13 is 0.3 × 2 = 0.6 Mbit / sec. On the other hand, since the MD unit writes data to the disk at 1 × speed, the reading speed from the buffer memory 13 is 1.44 Mbit / sec.

When dubbing recording is performed by performing double-speed reproduction by the CD section as described above, the buffer memory 13
When the ratio of the writing speed and the reading speed to the writing speed is small (however, in this case, the condition that the reading speed is faster than the writing speed does not change).
However, in such a case, the buffer memory 1
The recording operation may be performed in a state where a certain amount or more of data has been accumulated for No.3. That is, continuous recording is performed on the MD 90 instead of intermittent recording. In such a case, the present invention can be applied even if the monitor sound is output.

In the above-described embodiment, when the amount of data stored in the buffer memory 13 is equal to or more than Y and the level of the monitor output from the speaker 53 is lowered, the output of the monitor sound is thereafter performed. Although an example in which the level is kept in a lowered state is shown, this is merely an example. For example, after the output level of the monitor sound is lowered, the data storage amount of the buffer memory 13 becomes equal to or less than the data storage amount X. In such a case, the monitor output of the speaker 53 may be returned to the original level. Then, when the data storage amount becomes equal to or more than Y in the buffer memory 13 again, control is performed such that the monitor output level is reduced, and the monitor output level of the speaker 53 is reduced only when it is not possible to perform such control a predetermined number of times. It is also possible to leave it in the state where it is left. This can be applied to the case where the frequency band level corresponding to the natural frequency of the disk or the disk cartridge described above is variably controlled.

Further, in this embodiment, a read-only optical disk (C) in which data is recorded in a pit form is used.
The description has been given by taking as an example a CD / MD composite device capable of performing reproduction of D) and recording / reproduction of a magneto-optical disk (MD). For example, a write-once optical disk (for example, a CD-ROM) having a signal surface formed of a dye film. R) and rewritable optical disks (eg, DVD-R, D
VD-RW etc.) can be applied to various composite devices capable of recording and reproducing. Further, the present invention is not necessarily applied only to these composite devices, and the same effect can be obtained by applying at least to a recording device corresponding to these recordable discs.

Further, when reading data from the playback disk at the time of playback, the playback disk or the like vibrates violently depending on the volume of the playback sound output from the speaker 53, and this vibration may cause data to be read from the playback disk. You may not be able to do so,
In such a case, the present invention can be applied to a reproducing apparatus.

[0079]

As described above, the recording apparatus of the present invention, when recording input recording data on a recording medium,
When the data storage amount determination means determines that the storage amount of the recording data stored in the storage means is equal to or greater than a predetermined value, the control means gives a required change to the monitor sound output from the monitor output means. For this reason, the control is executed so as to lower the volume of the monitor sound, for example. However, it is possible to suppress the vibration caused by the excessive volume of the monitor sound. It is possible to suppress the occurrence of tracking servo and focus servo errors caused by the error. Therefore, the recording data stored in the storage means can be reliably written to the recording medium, so that the recording data recorded on the recording medium is not lost without any part being lost. Even when recorded data such as music is reproduced, it is possible to prevent the reproduced sound from skipping.

Further, according to the present invention, when the data storage amount discriminating means determines that the storage amount of the recording data stored in the storage means is equal to or more than a predetermined value, the control means outputs the monitor sound output from the monitor output means. By executing the control for attenuating the frequency band of the monitor sound including the frequency inherent in the recording medium, the recording data recorded on the recording medium is prevented from being lost. In this case, since the control is not simply performed by lowering the volume but by a frequency corresponding to the frequency unique to the recording medium, for example, the main cause of being unable to write the recording data to the disc is a certain cause of the monitor sound. In this case, the vibration can be suppressed very effectively in the case where the vibration is caused by the resonance between the frequency band and the frequency inherent in the recording medium.

In the present invention, a signal path as monitor output means for outputting monitor sound of input recording data is provided as a configuration branched from the signal path for recording the recording data. The control of the monitor sound is performed in a signal path as the monitor output means. For this reason, there is an advantage that the recording data recorded on the recording medium is not affected at all.

Such a configuration of the present invention is very effective when the main body as the recording apparatus of the present invention and a speaker for outputting monitor sound as sound are integrally formed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of a recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram of the recording / reproducing device of the present embodiment.

FIG. 3 is an explanatory diagram of an accumulation state of a buffer memory during a dubbing operation according to the present embodiment.

FIG. 4 is a flowchart showing a processing operation during a dubbing operation according to the present embodiment.

[Explanation of symbols]

1 CD / MD composite equipment, 11a main body, 3, 33
Optical head, 8 encoding / decoding units, 11 MD
Controller, 12 memory controller, 13 buffer memory, 14 encode / decode section, 19 operation section, 20 display section, 21 system controller, 2
1a RAM, 37 decoder, 39 DSP, 51 analog audio signal processing unit, 52 amplifier, 53 speaker, 61MD storage unit, 62 CD storage unit

Claims (5)

[Claims] 1. A storage unit for temporarily storing input recording data, a writing control for continuously writing the input recording data to the storage unit at a first transfer speed, and an accumulation in the storage unit. Storage control means for executing read control for reading the recorded data at a second transfer rate higher than the first transfer rate; recording means for recording the record data read from the storage means on a recording medium; Monitor output means for performing required signal processing on the input recording data and outputting the same as monitor sound to the outside; and determining whether or not the data storage amount of the recording data stored in the storage means is equal to or greater than a predetermined value. When the data storage amount determining means determines that the data storage amount is equal to or greater than a predetermined value, a required change is given to the monitor sound. Signal processing order to be found a recording apparatus characterized by comprising a control means for controlling to be performed in the monitor output unit. 2. The recording apparatus according to claim 1, wherein said control means executes control such that signal processing for lowering the output level of said monitor sound is executed in said monitor output means. apparatus. 3. The control unit according to claim 1, wherein the control unit executes control such that signal processing for giving a required change to the frequency characteristic of the monitor sound is performed by the monitor output unit. The recording device according to claim 1. 4. A control executed by the control means for giving a required change to the frequency characteristic of the monitor audio includes attenuating a frequency band of the monitor audio which is assumed to include a frequency inherent in the recording medium. 4. The recording apparatus according to claim 3, wherein the control is a control for causing the recording apparatus to perform the control. 5. A signal processing path formed as the monitor output means and a signal processing path for recording the input recording data on the recording medium are formed as different signal processing paths. The recording device according to claim 1, wherein: