JPH0963191A - Recording and playback system - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To allow a user to easily confirm the recorded voice content even during high-speed dubbing. SOLUTION: When dubbing recording from a disc 1P to a disc 1R, audio data read from the disc 1P is temporarily stored in a buffer memory 12 and supplied to a recording section 52 for the disc 1R. .
When data dubbing from the disk 1P to the disk 1R is performed, the buffer memory 12
A voice monitor output control means (10, 11) is provided for reading out a predetermined amount of voice data selected from among the voice data stored in 1) and outputting the voice at a timing at which the pitch of the output voice becomes substantially the original pitch.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing system capable of dubbing audio data from one recording medium to another recording medium by having a reproducing unit for the recording medium and a recording unit for the recording medium. is there.

[0002]

2. Description of the Related Art Various types of devices have come into wide use as recording media and recording / reproducing devices for recording / reproducing music / voice and the like. For example, compact cassette tape recorder and DAT
There are those using a tape-shaped recording medium such as a (digital audio tape) recorder, and those using a disk-shaped recording medium such as a CD (compact disc) player and an MD (mini disc) recorder.

In these recording / reproducing systems, the reproduction of music from a recording medium and the recording of music on a recording medium are used, and the audio data of a certain recording medium, which is called dubbing, is recorded on another recording medium. It is also used to do. For example, it is a usage mode in which audio data reproduced from a CD by a CD player is recorded on a cassette tape by a cassette tape recorder.

In such a dubbing operation, since it takes time to reproduce / record at a normal speed, the reproducing side can perform high-speed reproduction, and the recording side can perform high-speed recording to shorten the dubbing time. The function has also been put to practical use. For example, in an apparatus in which a reproducing device and a recording device are integrally provided, it is easy to simultaneously control the reproducing device part and the recording device part at high speed for such high-speed dubbing. Even when a separate reproducing device and recording device are used, a high-speed dubbing operation can be performed if the operations of the reproducing device and the recording device are synchronously controlled by connecting with a control cable.

[0005]

By the way, at the time of dubbing, the user usually listens to the voice currently recorded and confirms the recorded contents. That is, in a device capable of dubbing, the audio data reproduced from one recording medium is supplied to the recording section of the other recording medium and also to the reproduction output portion to be output as monitor audio.

Considering high-speed dubbing, the audio data is read out from one recording medium at a high speed, and therefore the reproduced and output audio also becomes high-speed. That is, the voice is high-speed and has a considerably high pitch. With such a voice output, it becomes difficult for the user to confirm the contents of the recorded voice, and there is a problem in that the output is actually meaningless.

[0007]

In view of the above problems, the present invention can execute monitor sound output so that the user can easily confirm the recorded sound contents even during high-speed dubbing. The purpose is to do so.

Therefore, in the recording / reproducing system capable of performing dubbing recording from the first recording medium to the second recording medium, the audio data read from the first recording medium is temporarily accumulated by the storage means. While being supplied to the recording means for the second recording medium. Then, when data dubbing from the first recording medium to the second recording medium is performed, a predetermined amount of audio data selected from the audio data stored in the storage means at each time point is output as output audio. An audio monitor output control means is provided which can read out and output audio at a timing when the interval of is substantially the original interval.

As described above, as the audio monitor output, the audio data read from the first recording medium is not used, but the audio data stored in the storage means is used, which may result in fragmented audio data. However, at least the sound output by the monitor can be output in a predetermined speed state regardless of the data reading speed of the reproducing means.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. In this example, a recording / reproducing apparatus using a mini disk as a recording medium is used, and an apparatus in which a reproducing apparatus section for the mini disk and a recording apparatus section for the mini disk are integrally formed. The description will be made in the following order. 1. Minidisk cluster format 2. Configuration of recording / reproducing apparatus 3. Operation and processing during dubbing

1. Cluster format of mini-discs Mini-discs are formed as magneto-optical discs and are media capable of recording / reproducing audio data. The voice data to be recorded is data obtained by converting an analog voice signal into digital data with a sampling frequency of 44.1 KHz and a quantization bit number of 16 bits, and further compressing the data amount to about 1/5. A predetermined modulation process is performed on the compressed digital audio data to form recording data, which is recorded on the disc by the magnetic field modulation method.

The format of recording data recorded on the disc is formed in units of clusters and sectors. Here, the cluster format of the mini disk will be described first.

The format of a cluster which is a unit of recording operation in the mini disk system is shown in FIG.
As recording tracks in the mini disk system, clusters CL are continuously formed as shown in FIG. 9, and one cluster is the minimum unit for recording. One cluster corresponds to the length of two or three tracks on the disc.

One cluster CL is a sector S.
4 sector linking areas, C _{FC to} SC _FF ,
It is formed from 32 sectors of main data area shown as sectors SC _{00 to} SC _1F . 2352 for one sector
It is a data unit formed by bytes. The four-sector linking area is used as sub-data or linking area, and TOC data, audio data, and the like are recorded in the 32-sector main data area. The address is recorded for each sector.

Further, the sector SC is further subdivided into units called sound groups SG, and two sectors are divided into 11 sound groups. That is, as shown in the figure, an even sector such as sector SC ₀₀ and sector S
In two consecutive sectors of odd sector such as C ₀₁ ,
The sound groups SG _{00 to} SG _0A are included. One sound group is composed of 424 bytes, and has a sound data amount corresponding to 11.61 msec as the reproduction time.

In one sound group SG, data is recorded separately for the L channel and the R channel. For example sound group SG ₀₀ is composed of L channel data L0 and R channel data R0, also composed of a sound group SG ₀₁ is L channel data L1 and R channel data R1. It should be noted that 212 bytes that are the data area of the L channel or the R channel are called a sound frame.

2. Configuration of Recording / Reproducing Apparatus The configuration of the recording / reproducing apparatus as the present embodiment corresponding to the mini disk having such a cluster format will be described with reference to FIG. The recording / reproducing apparatus 50 has a reproducing unit 51 and a recording / reproducing unit 52 as parts to which the mini disc 1 can be loaded. The reproduction section 51 is a section exclusively for reproduction,
A disk 1 (1P) for reproduction is loaded in the reproduction section 51. The recording / reproducing unit 52 is a portion capable of both recording and reproducing with respect to the loaded disc 1 (1R).

The disc 1P loaded in the reproducing section 51 is
It is rotationally driven by the spindle motor 2. Then, the optical head 3 irradiates the disk 1 with laser light during the reproducing operation of the reproducing section 51.

The optical head 3 outputs a relatively low level laser beam for reading data from the disk 1P and detects data from the reflected light by the magnetic Kerr effect. Therefore, the optical head 3 is equipped with a laser diode as a laser output unit, an optical system including a polarizing beam splitter and an objective lens, and a detector for detecting reflected light. The objective lens 3a is a biaxial mechanism 4
It is held so as to be displaceable in the radial direction of the disc and in the direction of approaching and separating from the disc. The entire optical head 3 can be moved in the disk radial direction by a sled mechanism 5.

The information detected from the disk 1 by the optical head 3 by the reproducing operation is supplied to the RF amplifier 6. The RF amplifier 6 performs an arithmetic operation on the supplied information,
A reproduction RF signal, a tracking error signal TE, a focus error signal FE, groove information (absolute position information recorded as pregrooves (wobbling grooves) on the magneto-optical disc 1) GD, etc. are extracted. The extracted reproduction RF signal is binarized to be a so-called EFM signal (8-14 modulation signal) and supplied to the decoder unit 8. The tracking error signal TE and the focus error signal FE are supplied to the servo circuit 7, and the groove information GD is supplied to the address decoder 9.

The servo circuit 7 is supplied with the tracking error signal TE, the focus error signal FE, and the system controller 1 composed of a microcomputer.
A track jump command from 0, an access command, and a spindle error signal SP generated by the decoder unit 8
Various servo drive signals are generated by E or the like. That is, 2
The axis mechanism 4 and the sled mechanism 5 are controlled to perform focus and tracking control, and the spindle motor 2 is controlled to a constant linear velocity (CLV).

The address decoder 9 decodes the supplied groove information GD to extract the address information. This address information is supplied to the system controller 10,
It is used for various control operations. Further, the EFM signal is subjected to EFM demodulation and decoding such as CIRC in the decoder unit 8. At this time, the EFM signal is used as data.
Addresses and subcodes included in the signals are also extracted and supplied to the system controller 10.

The audio data that has been subjected to EFM demodulation and decoding such as CIRC in the decoder section 8 is supplied to the memory controller 11 and once written in the buffer memory 12. The optical head 3 reads data from the disk 1P and the optical head 3 reads data from the buffer memory 12.
The transfer of playback data in the system up to 1.41 Mbit / sec,
Moreover, it is usually performed intermittently. In the case of high-speed dubbing, which will be described later, the read operation is continuously performed, or the transfer rate is set to a higher rate, so that data can be read at a higher speed than in normal reproduction. The processing of the decoder unit 8 and the writing to the buffer memory 12 are performed in sector units.

At the time of normal reproduction, the data written in the buffer memory 12 has a reproduction data transfer of 0.3M.
It is read at a timing of bit / sec and supplied to the audio compression decoder unit 13. The audio data read from the disc 1P and decoded, that is, the audio data at the stage of being accumulated in the buffer memory 12, is a sampling frequency of 44.1 KHz, 16-bit quantized digital audio data is about 1 /
It has been compressed to a data amount of 5.

Therefore, at the time of reproduction, data expansion processing is performed by the audio compression decoder unit 13 and decoded into the original sampling frequency of 44.1 KHz and 16-bit quantized digital audio data. Then, it is supplied to the D / A converter 14 to be an analog audio signal, supplied from the output terminal 15 to a predetermined amplifier circuit section, and output as reproduced sound.

The recording / reproducing section 52 is provided with the loaded disc 1
It is assumed that R can be reproduced and recorded.
The disk 1R loaded in the recording / reproducing unit 52 is rotationally driven by the spindle motor 22. And disk 1
The R head is irradiated with laser light by the optical head 23 during the recording or reproducing operation as the recording / reproducing unit 51.

The optical head 23 provides a high level laser output for heating the recording track to the Curie temperature during recording, and a relatively low level laser for detecting data from the reflected light by the magnetic Kerr effect during reproduction. Output. Therefore, the optical head 23 is equipped with a laser diode as a laser output means, an optical system including a polarization beam splitter, an objective lens, and the like, and a detector for detecting reflected light. Objective lens 23
The a is held by the biaxial mechanism 24 so as to be displaceable in the radial direction of the disk and in the direction of approaching and separating from the disk.

Further, the optical head 2 is sandwiched by the disk 1R.
The magnetic head 21 is arranged at a position facing the magnetic head 3.
The magnetic head 21 performs an operation of applying a magnetic field modulated by the supplied data to the disk 1R. The entire optical head 23 and the magnetic head 21 are movable in the disk radial direction by a sled mechanism 25.

The information detected from the disk 1R by the optical head 23 by the reproducing operation of the recording / reproducing unit 52 is R
It is supplied to the F amplifier 26. The RF amplifier 26 extracts the reproduction RF signal, the tracking error signal TE, the focus error signal FE, the groove information GD, etc. by the arithmetic processing of the supplied information. The extracted reproduction RF signal is binarized to be a so-called EFM signal (8-14 modulation signal) and supplied to the decoder unit 8. The tracking error signal TE and the focus error signal FE are supplied to the servo circuit 27, and the groove information GD is supplied to the address decoder 29.

The servo circuit 27 receives the tracking error signal TE, the focus error signal FE, the track jump command and the access command from the system controller 10, the spindle error signal SPE generated by the decoder unit 28, and the like. Generate a drive signal. That is, the biaxial mechanism 24 and the sled mechanism 25 are controlled to perform focus and tracking control, and the spindle motor 22 is controlled to a constant linear velocity (CLV).

The address decoder 29 decodes the supplied groove information GD and extracts address information. This address information is supplied to the system controller 10 and used for various control operations. The EFM signal is subjected to EFM demodulation and decoding such as CIRC in the encoder / decoder unit 28. At this time, addresses, subcodes, etc. included in the EFM signal as data are also extracted and supplied to the system controller 10. .

The audio data subjected to the EFM demodulation and the decoding such as CIRC in the encoder / decoder unit 28 are supplied to the memory controller 11 and once written in the buffer memory 12. Also in this case, similarly to the reproducing unit 51, the reading of data from the disk 1R by the optical head 23 and the transfer of the reproduced data in the system from the optical head 23 to the buffer memory 12 are 1.41 Mbit / sec, and are usually intermittent. To be done. The processing of the encoder / decoder unit 28 and the writing to the buffer memory 12 are performed in sector units.

During normal reproduction by the recording / reproducing unit 52, the data written in the buffer memory 12 is read at the timing at which the reproduction data is transferred at 0.3 Mbit / sec, and the reproduction unit 51 reproduces the data. Similarly, after being decoded by the audio compression decoder unit 13, it is supplied to the D / A converter 14 to be an analog audio signal, and the output terminal 1
5 is supplied to a predetermined amplifier circuit section and is output as reproduced sound.

When the recording operation is performed on the disk 1R, the recording signal (analog audio signal) supplied to the input terminal 18 is quantized by the A / D converter 17 at a sampling frequency of 44.1 Hz and 16 bits. After being converted into digital data of, it is supplied to the audio compression encoder 16,
Audio compression encoding processing is performed so that the data amount is about 1/5.

The digital audio data processed by the audio compression encoder 16 is stored in the memory controller 1.
1 and is once written in the buffer memory 12. Then, every time a predetermined amount or more (for example, one cluster or more) of data is accumulated in the buffer memory 12, the data is read out in sector units and the encoder / decoder unit 28
Sent to Then, in the encoder / decoder unit 28, the CI
It is supplied to the magnetic head drive circuit 20 after being subjected to encoding processing such as RC encoding and EFM modulation.

Then, the magnetic head drive circuit 20 supplies a magnetic head drive signal to the magnetic head 21 in accordance with the encoded recording data (EFM signal). That is,
The magnetic head 21 applies an N or S magnetic field to the disk 1R. At this time, the system controller 10 also supplies a control signal to the optical head so as to output a laser beam of a recording level. By passing through the buffer memory 12, the recording operation for continuously input audio data is intermittently performed.

Further, the reproducing unit 51 performs the reproducing operation of the disc 1P and the recording / reproducing unit 52 performs the recording operation to the disc 1R, so that the dubbing recording from the disc 1P to the disc 1R can be performed. In this case, the audio data read from the disk 1P and decoded by the decoder unit 8 is accumulated in the buffer memory 12.

Each time one cluster of data is stored in the buffer memory 12, the data is read out in sector units and supplied to the encoder / decoder unit 28.
Then, as described above, an EFM signal is obtained by the encoding process, and the magnetic head drive circuit 20 causes the magnetic head 21 to apply an N or S magnetic field according to the EFM signal. This realizes the dubbing operation. At this time, the system controller 10 controls the cooperative operation of the reproducing unit 51 and the recording / reproducing unit 52.

Even during such dubbing, the data stored in the buffer memory 12 (that is, the audio data read from the disc 1P by the reproducing unit 51) can be supplied to the audio compression decoder 13 and D / It can be output as monitor sound from the output terminal 15 via the A converter 14.
As a result, the user can check the recorded contents during dubbing.

As the dubbing operation, normal speed dubbing and high speed dubbing can be performed. In normal speed dubbing, the reproducing unit 51 reads out data at the same speed as in normal reproduction, and the recording / reproducing unit 52 also records, for example, one cluster at a time according to the storage amount in the buffer memory 12. In this case, the monitor output voice can be made the same voice as the voice at the normal reproduction (the voice at the normal pitch) by the reading process from the buffer memory 12 similar to that at the normal reproduction.

On the other hand, in the case of high speed dubbing, the reproducing section 51
Reads data and stores it in the buffer memory 12 at a faster rate than during normal reproduction. The recording / playback unit 52 displays, for example, 1
The operation of recording cluster by cluster is the same, but the speed of data accumulation from the reproducing unit 51 to the buffer memory 12 is increased, and as a result, the actual data is recorded on the disk 1R at a higher data rate than that during normal recording. Data will be recorded. The operation during the high-speed dubbing and the output operation of the monitor sound will be described later.

The operation unit 30 is provided with various keys used for user operations. For example, a record key, a play key, a stop key, an AMS key, a fast forward key, a fast rewind key, etc. are provided.
Is supplied to. A dubbing operation key for executing a dubbing operation and a high speed dubbing operation key for executing a high speed dubbing are also provided.

The display unit 31 is composed of, for example, a liquid crystal display, and the display driver 32 displays the operating states of the reproducing unit 51 and the recording / reproducing unit 52, track numbers, time information and the like. A display control signal and data to be displayed are supplied from the system controller 11 to the display driver 32.

The output of the audio compression decoder 13 is supplied to the level meter section 19 to detect the audio signal level. This audio level information is supplied to the display driver 32, and the display driver 32 causes the display unit 31 to perform level display based on the audio level information. The level display is performed, for example, by changing the number of display segments to be emitted according to the level. This level display indicates the level of the reproduced sound during reproduction, the input level when recording the input sound from the input terminal 18, and the level of the data to be dubbed during dubbing.

3. Operation and Processing During Dubbing The operation and processing during high-speed dubbing in the recording / reproducing apparatus 50 will be described. 2 to 5 show the processing of the system controller 10 during high-speed dubbing, and FIGS.
FIG. 8 schematically shows the operating state of the buffer memory 12 under the control of the memory controller 11 during high-speed dubbing. In particular, during this high-speed dubbing operation, the monitor sound can be output at a normal speed, that is, at the same pitch as during normal reproduction, although it is fragmentary.

At the time of high-speed dubbing, the system controller 10 and the memory controller 11 perform the main routine processing of FIG. 2, and at the time of execution of this main routine, the recording interrupt processing of FIG. 5 and the monitor for the actual recording operation to the disk 1R. The sound output interruption process of FIG. 4 for outputting the sound is performed.

The main routine is mainly for the data reading operation from the disc 1P in the reproducing section 51, and the recording / reproducing section 52.
The overall data recording operation on the disk 1R is controlled. In the sound output interrupt process, the process of the memory controller 11 for reproducing the monitor sound is performed, and in the recording interrupt process, the data to be recorded is stored in the buffer memory 1.
The processing of the memory controller 11 for sending out from 2 to the recording / reproducing unit 52 side is performed.

In the main routine, first, initialization processing is performed as step F101. This initialization process is a process from the start of data reading by the reproducing unit 51 to the acquisition of the first two sectors reproduced and output as the monitor sound into the buffer memory 12. This initialization process is shown in FIG.

First, various variables are initialized (F201). The writing / reading process of data to / from the buffer memory 12 by the memory controller 11 is performed by the write pointer WP and the read pointer R.
This is performed based on the three pointers of P and monitor pointer MP. These pointers WP, RP, M
P is also initialized.

The write pointer WP, the read pointer RP, and the monitor pointer MP each designate an address (address in sector unit) on the buffer memory 12, and the data supplied from the reproducing unit 51 in sector unit is written. The data is written at the address of the buffer memory 12 indicated by the value of the add pointer WP. Therefore,
The write pointer WP is a pointer that is incremented for each writing operation for one sector to the buffer memory 12.

The read pointer RP is a pointer for reading data from the buffer memory 12 and transferring it to the recording / reproducing unit 52. That is, the sector data indicated by the read pointer RP is sequentially read and supplied to the encoder / decoder unit 28. The read pointer RP is incremented each time data of one sector is read.

The monitor pointer MP serves as a pointer for designating the sector data read from the buffer memory 12 for outputting the monitor sound. That is, the sector data in the buffer memory 12 indicated by the monitor pointer MP is read out and supplied to the audio compression decoder 13.

FIG. 6 schematically shows the data storage area of the buffer memory 12, and in this figure, Ad0, Ad
.. are respectively addresses of areas for storing data for one sector. At the time of variable initialization in step F201, as shown in FIG. 6A, the write pointer WP, the read pointer RP, and the monitor pointer MP are Ad0, which is the address to which the first sector is written, respectively.
Is set to the value of

After the initialization of the variables is completed, in step F102,
The system controller 10 controls the reproducing section 51 side to make the optical head 3 access the reproduction start address of the disc 1P and start reading the data from the disc 1P. In accordance with this read operation, the decoder unit 8 performs a decoding process on a sector-by-sector basis and writes it in the buffer memory 12. That is, in the memory controller 11, each time the sector unit data is supplied from the decoder unit 8, the data is written to the address indicated by the write pointer WP of the buffer memory 12, and the write pointer WP is set to the next value. Increment to (address for storing the next sector). This operation is step F20.
It depends on the processing of 3, F204.

In step F205, it is monitored whether or not data of two or more sectors is accumulated in the buffer memory 12. A state in which the first two sectors as the data read from the disk 1P are written in the buffer memory 12 based on the write pointer WP is shown in FIG. 6 (b). The area marked "SC" in the figure indicates that the sector data read from the disk 1P is stored therein. When 2 sectors are written as shown in FIG. 6B, the process proceeds from step F205 to F206. At this time, as shown in the figure, the value of the write pointer WP is updated to a value corresponding to the next address "Ad2", and thereafter, the disk 1
Depending on the reading and decoding of sector data from P,
Storage and write pointer WP based on write pointer WP
Will be updated.

At the time of proceeding to step F206, the monitor pointer MP remains the initial value "Ad0". Here, reading for monitor output is started from the sector data stored in the area "Ad0" indicated by the monitor pointer MP. That is, first, the sector data stored in “Ad0” is read out, supplied to the audio compression decoder 13, and output as monitor audio via the D / A converter 14, and the level meter unit 19 detects the level. The level is displayed on the display unit 31.

In step F207, the sound output interrupt process shown in FIG. 4 is permitted. After that, the sound output interrupt processing is executed at any time during the processing period of the main routine of FIG. 2 until the sound output interrupt processing is prohibited.

The initialization process shown in FIG. 3 ends with the permission of the sound output interrupt process, and the process proceeds to step F102 in FIG. As the processing of this main routine, reading and decoding of data for one sector from the disk 1P are performed.
When written in the buffer memory 12, step F109 →
In step F110, the write pointer WP is updated to the next value. By this process, each 1 sequentially read from the disc 1P
Data in sector units are sequentially accumulated in the buffer memory 12.

The reading process based on the monitor pointer MP started in step F206 of FIG. 3 is continued by the sound output interrupt of FIG. When the sound output interrupt process of FIG. 4 is performed after the sector data of "Ad0" is reproduced as the monitor sound in step F206, the monitor pointer MP is first updated to the next value "Ad1". That is, the area "Ad1" is defined by the monitor pointer MP.
Is designated, the sector data stored therein is read, supplied to the audio compression decoder 13, and output as monitor audio. This operation is step F302, F
It becomes the processing of 305. Step F302 is a process of monitoring whether or not two sectors are continuously monitored and output. In this case, after the audio data stored in the areas "Ad0" and "Ad1" are monitored and output, the next sound output interrupt process is performed. A positive result will be obtained in.

The state in which the voice data stored in the areas "Ad0" and "Ad1" are output as a monitor is shown in FIG. 7 (a). The shaded area indicates that the data has been read out for monitor output. In the sound output interrupt processing subsequent to the sound output interrupt processing in which the data of the area “Ad1” is output as a monitor, in step F301, the monitor pointer MP = “Ad
2 ”. The state at this time is shown in FIG. At this time, the write pointer WP is processed by the processing of steps F109 and F110 of the main routine described above.
Are being updated and sector data is being written.

In the case of this high-speed dubbing operation, the disc 1
Data reading from P and storage in the buffer memory 12 are performed at a higher speed than usual, as described above. On the other hand, the data read / monitor output based on the monitor pointer MP is executed so that the rate is the same as that during normal reproduction. That is, the timing of the sound output interruption is set so as to obtain the output speed during normal reproduction. Therefore,
At the time when two sectors are read by the monitor pointer MP, the write pointer WP is considerably advanced, for example, “Ad10” shown in FIG. 7A. In other words, data far ahead of the output monitor sound is already written in the buffer memory 12.

For this reason, if the data indicated by the monitor pointer MP is read at the same timing as during normal reproduction, it will not be able to catch up with the data read from the disc 1P. Therefore, in the sound output interrupt process after reading two sectors, the process proceeds from step F302 to F303 → F304, and the value of the monitor pointer MP is set to 1 of the write pointer WP.
The previous value. This state becomes as shown in FIG. 7B, that is, the value of the monitor pointer MP is skipped so as to catch up with the write pointer WP.

Then, in step F305, the monitor pointer M
The data in the area "Ad9" indicated by P is read and output as monitor sound. After that, the monitor pointer MP = “Ad
10 ", the data in the area" Ad10 "is read out and output as monitor sound.

As described above, at the time when the state of FIG. 7C in which two sectors are output as the monitor sound is reached, the value of the monitor pointer MP is changed to the value at that time in step F304 in the next sound output interrupt processing. It will be skipped based on the value of the write pointer WP. After that, the sound output interruption process is similarly performed, that is, every two sectors are taken out from the buffer memory 12 in a fragmentary manner and output as monitor sound.

In the main routine of FIG. 2, when the reading of the sector unit from the disk 1P is not completed, the process proceeds from step F102 to F103. If the recording interrupt is permitted, the main routine does not perform the process. . If the recording interrupt is not permitted, the process proceeds from step F104 to step F105, and it is confirmed whether or not the data storage amount in the buffer memory 12 is equal to or more than one cluster. If it has not reached one cluster, the process is exited.

If it is determined in step F105 that the number of clusters is one or more, the process proceeds from step F106 to F107 to start recording from the sector data indicated by the read pointer RP. For example, as shown in FIG. 8A, the value of the write pointer WP is “Ad3
2 ”or more, and when data of 32 sectors from Ad0 to Ad31 is written, the buffer memory 12
The accumulated amount of 1 cluster or more. At this time, the read pointer RP remains "Ad0" which is the initial value.

In step F107, this read pointer RP
The data in the area “Ad0” indicated by is read and transferred to the encoder / decoder unit 28. Then, EFM modulation or the like is performed, and the magnetic head 21 records the data on the disk 1R. In step F108, the recording interruption process is permitted, and thereafter the recording interruption process of FIG. 5 is executed at a predetermined timing.

In the recording interrupt process, first, the read pointer RP is set to the next value, the read is performed according to the read pointer RP, and the read / transferred to the encoder / decoder unit 28. Then, the data is recorded on the disc 1R (F401). in this case,
The read pointer RP = “Ad1” is set, and this area “Ad
The sector data stored in "1" is actually the disk 1R
Will be recorded.

This recording interruption process is executed at a predetermined timing until one cluster of data is recorded on the disk 1R. That is, as shown in FIG. 8B, the read pointer RP is updated, each sector data is read, and the operation of recording on the disk 1R is performed as each recording interrupt process. Then, when the recording of the sector data up to the area “Ad31” on the disc 1R is executed,
In the next recording interrupt process, proceed from step F402 to F403,
Pause the recording operation. Also prohibit recording interrupt processing
(F404).

If the accumulated amount in the buffer memory 12 is not zero, that is, if there is data ahead of the recorded sector, the recording interrupt process is terminated. Even if the accumulated amount is zero, the step
If it is determined in F406 that the reproducing section 51 is reading data from the disc 1P, the recording interrupt process is ended there. The case where the recording interrupt processing is ended from this step F405 or F406 is the case where the dubbing operation has not been completed yet, the accumulation for one cluster is stopped again, and the recording operation is restarted.

That is, at step F105 in the main routine of FIG. 2, the remaining amount of the buffer memory 21 is confirmed, and when it reaches one cluster or more, the data is recorded on the disk 1R by steps F107, F108 and the recording interruption process. Will be performed.

When the reading of the data of the last sector to be read on the disc 1P side is finished at a certain point and the reading end of the last read address is confirmed, the process proceeds from step F109 to F111, and the system controller 11 reproduces. Part 51
Stop the read operation. In the sound output interrupt process thereafter, monitor output for two sectors is performed, and step F3
When the process proceeds from 02 to F303, the reproducing unit 51 is stopped, so the process proceeds to step F306, and the sound output interrupt process is prohibited.
As a result, the monitor voice output is ended.

When recording of a certain cluster is completed by the recording interrupt processing before and after the reading operation of the reproducing section 51 is stopped, the next recording interrupt processing is performed in step F40.
Although the process proceeds to 3, F404 and F405, there may still be data that has not been recorded in the buffer memory 12 at this point. Therefore, in this case, the recording interrupt process is terminated in step F405, and the process returns to the main routine. And, already the reproducing unit 5
Since step 1 is stopped, proceed from step F104 to F106,
Regardless of the remaining capacity of the buffer memory 12, steps F107, F
The remaining data is recorded on the disk 1R by 108 and the recording interruption process.

By this recording operation, the buffer memory 12
When all the remaining amount of is recorded on the disc 1, a positive result is obtained in step F405 in the recording interrupt process. At this time, since the reproducing unit 51 has already stopped, the step
Proceeding from F406 to F407, the recording operation of the recording / reproducing unit 52 is stopped. In other words, the recording operation is finished assuming that all the data to be dubbed has been recorded. When returning to the may routine, a positive result is obtained in step F106, and the series of high-speed dubbing operations is ended.

With the above processing, the monitor sound is output based on the monitor pointer MP during high-speed dubbing. In other words, this audio output is based on data that is taken out in fragments, for example, for every two sectors, but each bit data in that sector can be read at the timing of normal reproduction, and the speed of the reproduced audio can be read. (Pitch of reproduced sound) can be the same as that during normal reproduction. That is, monitor audio output is performed using a monitor pointer MP, which is a pointer independent of the read pointer RP, so that monitor audio output can be performed at a predetermined speed regardless of the dubbing speed from the disk 1P to the disk 1R. This makes it possible for the user to listen to the dubbing content at a normal pitch, although it is fragmentary, and to easily confirm the recording content at each point even during high-speed dubbing.

In the embodiment, the monitor sound is output for every two sectors, but it is not limited to two sectors. By continuously extracting as many sector units as possible, the monitor sound becomes more audible. However, if the dubbing speed is set to a higher value, if too many sectors are read continuously and output at the normal pitch, the monitor sound will not be attached to the actual dubbing data. As a result, optimum data extraction may be performed.

By the way, in FIG. 1, the case where the CD player section 40 is integrally provided is shown as a broken line block. That is, the configuration is such that the digital audio data reproduced from the CD by the CD player unit 40 can be dubbed on the disc 1R by the recording / reproducing device unit 42.

In this case, the CD player unit 40 executes the high-speed reproduction operation so that the reproduced data is encoded by the audio compression encoder 16 and then written in the buffer memory 12. Then, each time the accumulated amount becomes equal to or larger than the predetermined amount, it may be recorded on the disc 1R. Also in this case, the monitor pointer M is used as the monitor voice.
As in the case described above, if P is used to read out sector data designated in pieces in a normal reproduction speed state, it is possible to obtain a monitor sound output that is easy to hear.

The present invention can be implemented not only in the mini disk system but also in other digital data recording / reproducing system. That is, any recording device that transfers recording data via the buffer memory can be applied as a recording / reproducing system using a disc-shaped recording medium, a tape-shaped recording medium, or the like.

[0080]

As described above, according to the present invention, in the recording / reproducing system capable of performing the dubbing recording from the first recording medium to the second recording medium, the audio data read from the first recording medium is recorded. Is supplied to the recording means for the second recording medium while being temporarily accumulated by the storage means. Then, when data dubbing from the first recording medium to the second recording medium is performed, a predetermined amount of audio data selected from the audio data stored in the storage means at each time point is output as output audio. The audio monitor output control means capable of reading and outputting the sound at a timing when the pitch of the sound is almost the original pitch is provided, so that the sound to be output as the monitor is a predetermined sound regardless of the data reading speed of the reproducing means. It is possible to output in the speed state of. That is, there is an effect that the user can output monitor sound that is easy to hear even during high-speed dubbing, and it is easy to check the dubbing content.

[Brief description of drawings]

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

FIG. 2 is a flowchart of a main routine during high-speed dubbing of the recording / reproducing apparatus of the embodiment.

FIG. 3 is a flowchart of initialization processing at the time of high-speed dubbing of the recording / reproducing apparatus of the embodiment.

FIG. 4 is a flowchart of a sound output interrupt process during high-speed dubbing of the recording / reproducing apparatus of the embodiment.

FIG. 5 is a flowchart of a recording interrupt process during high-speed dubbing of the recording / reproducing apparatus of the embodiment.

FIG. 6 is an explanatory diagram of a buffer memory operation during high-speed dubbing of the recording / reproducing apparatus of the embodiment.

FIG. 7 is an explanatory diagram of a buffer memory operation during high-speed dubbing of the recording / reproducing apparatus of the embodiment.

FIG. 8 is an explanatory diagram of a buffer memory operation during high-speed dubbing of the recording / reproducing apparatus of the embodiment.

FIG. 9 is an explanatory diagram of a cluster format of a mini disk.

[Explanation of symbols]

 1P, 1R Disk 3,23 Optical head 8 Decoder section 10 System controller 11 Memory controller 12 Buffer memory 13 Audio compression decoder 14 D / A converter 15 Output terminal 16 Audio compression encoder 19 Level meter 21 Magnetic head 28 Encoder / decoder section 30 Operation unit 31 Display unit 32 Display driver 50 Recording / reproducing device 51 Reproducing unit 52 Recording / reproducing unit

Claims (1)

[Claims] 1. A reading means capable of reading voice data from a first recording medium, a storage means for temporarily storing the voice data read from the read means, and a voice stored in the storage means. Recording means capable of reading data at a predetermined timing and recording it on a second recording medium, and data dubbing from the first recording medium to the second recording medium by the operations of the reading means and the recording means. In this case, a predetermined amount of voice data selected from the voice data stored in the storage means at each point of time can be read out and output as voice at a timing at which the pitch of the output voice becomes substantially the original pitch. A recording / reproducing system characterized by comprising: an audio monitor output control means capable of: