JP3518492B2 - Disk recording device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk shape having a main data recording area for recording main data and a management data area for recording management data for managing a recorded area and a recordable area for the main data recording area. The present invention relates to a disk recording apparatus for recording main data and management data on a recording medium. For example, for a magneto-optical disk having a recording / reproducing area formed by a magneto-optical recording medium, main data such as audio information and a song number are recorded. The present invention is applied to a magneto-optical disk recording device that records management data such as an address on the main data of a song indicated by a song number.

[0002]

2. Description of the Related Art An optical disk can have a recording capacity larger than that of a magnetic disk by about 2 to 3 digits and can be accessed at a higher speed than a tape-shaped recording medium. In addition, since data can be recorded / reproduced in a non-contact manner with respect to the medium and the durability is excellent, it has been widely used in recent years.

As this optical disk, a read-only optical disk according to a standard CD format (CD-DA format) having a read-only area in which data is recorded as pits, and a magneto-optical recording medium capable of recording and reproducing data are used. The CD having the formed recording / reproducing area
-CD as an extended format of DA format-
A magneto-optical disk according to the MO format, a hybrid disk having both a read-only area in which data is recorded as pits and a recording / reproducing area in which data can be recorded / reproduced are known.

Conventionally, in a disc recording / reproducing apparatus for recording data on a disc-shaped recording medium such as a magneto-optical disc or a hybrid disc, if the recorded data becomes useless during recording, the recording is stopped by a manual operation. It was. For example, when recording music from a compact disc to a magneto-optical disc, recording by the magneto-optical disc recorder was stopped manually after the reproduction of the CD player was completed.

Here, in a disk-shaped recording medium such as an optical disk or a magnetic disk, a main data recording area for recording main data and a management data area for recording management data are provided, and by the management data recorded in the management data area, A recorded area and a recordable area of the main data recording area are managed. For example, an optical disc according to the above CD format has a data area in which program data such as performance data is recorded and a lead-in area provided on the inner peripheral side thereof, and the recording position and recorded contents of the data area. (TOC: Table
As the data of contents, recording start address information and recording end address information are sequentially recorded in the lead-in area for all program data.

Further, the applicant of the present application has proposed that a mini disc (MD: MD:
An MD system for digitally recording and reproducing a music signal or the like using a Mini Disc has been previously proposed. There are three types of mini discs: a read-only optical disc, a recordable magneto-optical disc, and a hybrid disc in which a read-only area and a recordable area are mixed. In the MD system capable of recording / reproducing main data, a program area and a UTOC area are provided in a recordable area of a mini disk, and the list (UTOC) data indicating the recording position and the recorded content of the program area is described above. UTO
The data is recorded in the area C.

[0007]

By the way, in the conventional disc recording / reproducing apparatus, since the recording is stopped by the manual operation, only the designated music is recorded by using the program reproducing function of the CD player or the like. Case C
When recording a song smaller than the capacity of the recording side such as a D single, there is a problem that silence is continuously recorded after the reproduction on the source side is completed. In order to prevent silence from being recorded continuously, I had to wait on the set side during recording all the time and stop recording when the source side had finished playing.

If the recording is not stopped by a manual operation, silence will be recorded up to the end of the recordable area.
There is a problem that additional recording cannot be performed unless the silent part is re-registered as an empty area.

In view of the problems in the conventional disc recording / reproducing apparatus as described above, an object of the present invention is to provide a disc recording apparatus capable of detecting an invalid recording state such as silence and automatically stopping it. Especially.

Another object of the present invention is to provide a disk recording apparatus capable of automatically separating an invalid recording portion such as silence from an effective recording portion.

Still another object of the present invention is to provide a disc recording apparatus capable of automatically deleting an invalid recording portion such as silence.

[0012]

The present invention provides a main data recording area for recording main data and a management data recording area for recording management data for managing a recorded area and a recordable area for the main data recording area. In a disc recording device for recording main data and management data on a disc-shaped recording medium having the storage device, storing means for storing address data of the main data recording area in which main data of a predetermined level or less is recorded, A recording control means for rewriting the management data based on the stored address data, after the recording of the main data is completed, so that the data at the recording end portion of the main data or below the predetermined level is divided into other main data. Is characterized by. Further, according to the present invention, in the disc recording apparatus, after the recording of the main data is completed by the recording control means, the data of the predetermined level or less at the recording end portion of the main data is divided and deleted as other main data. The management data is rewritten as described above. Further, according to the present invention, in the above-mentioned disc recording apparatus, level detection means for determining whether or not a signal level of main data input is below a predetermined level, and a signal of main data input by the level detection means. The signal level of the main data, which is stored in the storage means for storing the recording position information of the recorded area of the main data whose level is determined to be less than or equal to the predetermined level and is input by the level detection means, is equal to or higher than the predetermined level. Storage control means for erasing the recording position information stored in the storage means when it is determined that the recording operation of the main data on the disc-shaped recording medium is stopped. First discriminating means for discriminating whether the main data recording operation on the disc-shaped recording medium is stopped by the first discriminating means. If the recording position information is stored in the storage device, the second determination device determines whether or not the recording position information is stored in the storage device, and the operation of recording the main data on the disc-shaped recording medium is performed by the second determination device. When it is determined that the recording position information is stored in the storage unit when stopped, a control unit that edits the management data is performed so that main data division processing is performed based on the recording position information. It is characterized by being prepared. Also,
According to the present invention, in the disc recording device, the management data recorded in the management data area includes a start address and an end address of main data already recorded in the main data recording area and a recordable area of the main data recording area. The control means is composed of a start address and an end address, and the control means edits the management data by using the recording position information stored in the storage means as the end address of the recorded main data. Further, according to the present invention, in the disc recording apparatus, the management data recorded in the management data area can be recorded in the main data recording area and the start and end addresses of main data already recorded in the main data recording area. The control means is composed of a start address and an end address of the area, and the control means edits the management data by using the recording position information stored in the storage means as the start address of the recordable area. Further, according to the present invention, in the disc recording apparatus, the control means edits the management data so as to delete main data located rearward with reference to the recording position information stored in the storage means. Characterize.

Further, according to the present invention, there is provided a disk-shaped disc having a main data recording area for recording main data, a management data area for recording management data for managing a recorded area and a recordable area of the main data recording area. In a disk recording device for recording on a recording medium, a level detecting means for determining whether or not a signal level of input main data is below a predetermined level, and a signal level of main data input by the level detecting means. Is a predetermined level or lower, the memory means for storing the recording position in the recorded area of the main data and the signal level of the main data input by the level detection means are determined to be higher than the predetermined level. Memory control means for erasing the recording position stored in the memory means and a memory for the disk-shaped recording medium. First discriminating means for discriminating whether or not the recording operation of the main data is stopped, and when it is discriminated by the first discriminating means that the recording operation of the main data on the disc-shaped recording medium is stopped. Second discriminating means for discriminating whether or not the recording position is stored in the memory means, and when the operation of recording the main data on the disc-shaped recording medium is stopped by the second discriminating means, When it is determined that the recording position is stored in the memory means, the control means edits the management data so that the main data is divided based on the recording position. .

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The present invention is applied to a disk recording / reproducing apparatus 1 having a structure as shown in the block diagram of FIG. 1, for example.

The disk recording / reproducing apparatus 1 shown in FIG.
Is a disc 1 having a diameter of 64 mm in the cartridge 11a.
A mini disk 11 accommodating 1b is used as a recording medium, and the spindle motor 12 drives the disk 11b.
The present invention is applied to a mini-decoder that records and reproduces data by rotating the disk at a constant linear velocity. Here, as shown in FIG. 2, for example, a reproduction-only area A _{10 and} this reproduction-only area A _{10 are used.} A hybrid disk 11b having a recording / reproducing area A ₂₀ provided outside the disk is driven to rotate by the spindle motor 12 at a constant linear velocity.

The read-only area A ₁₀ of the hybrid disc 11b has a program area A ₁₁ in which program data such as performance information is recorded and a lead-in area A ₁₂ provided on the inner peripheral side thereof. . In this reproduction-only area A ₁₀ , digital data is recorded in advance as presence / absence of pits corresponding to “1” and “0”. The lead-in area A ₁₂ has a table (TOC: Table of Contents) showing the recording positions and contents of the program area A _11.
As data, various management data such as a start address and an end address, a track name which is a name of a program, and a disc name which is a name of a disc are sequentially recorded for all program data.

The recording / reproducing area A ₂₀ of the hybrid disc 11b has a program area A _{21 in} which program data such as performance information is recorded, and a UTOC area A ₂₂ provided on the inner peripheral side thereof. There is. This recording / reproducing area A ₂₀ is a magneto-optical recording medium area. And
A recording track is formed along the groove (guide groove for tracking) in the recording / reproducing area A ₂₀ of the hybrid disc 11b. Further, by wobbling the groove, a wobbling signal for CLV control is formed. A sine wave signal is recorded and address information is superimposed by frequency-modulating the CLV control sine wave signal. Also, the above U
In the TOC area A ₂₂ , as the UTOC data indicating the recording position and the recording content of the data recorded in the program area A ₂₁ , the track number indicating the series of data recorded in the program area and the address indicating the position of each area. Various management data such as is recorded.

Here, the UTOC area A ₂₂ is allocated with a recording / reproducing area for three sectors of sector 0, sector 1 and sector 2.

As shown in the structure of sector 0 of the UTOC area A ₂₂ in FIG. 3, the recording status of the disk 11b is written in the sector 0. The P-FRA is for managing the recordable area in the program area A ₂₁ , and a pointer on sector 0 containing the start address indicating the start position of the recordable area is written in the P-FRA. ing. P-TNOn is for managing the recorded area in the program area A ₂₁ .
The pointer on sector 0, which contains the address at which the first song starts, is written in TNO1. That is, P-
If TNO1 contains "1", sector 0 (76+
The start address and end address are written starting from 1 × 2) × 4 bytes. The same applies to P-TNO2 and thereafter.

As shown in FIG. 4, the structure of the sector 1 of the UTOC area A ₂₂ is as follows.
Contains disc name and track name information.
This information is an ASCII code. In P-TNA1, the start address on sector 1 containing the track name of the first song is written. That is, if the P-TNA1 is "2", the track name of the first music piece is entered starting from (76 + 2x2) x4 bytes of sector 1. P-
The same applies to TNA2 and later.

Further, sector 2 of the UTOC area A ₂₂
As shown in the structure of FIG. 5, the sector 2 is a sector for recording the recording date and time. With a mini disc recorder, it is usually recorded automatically at the same time as the recording. In P-TRD1, the start address on sector 2 containing the recording date and time of the first music is written. That is, P
-If TRD1 is "3", (76 + 3x of sector 2
2) The recording date and time of the first song is entered beginning with x4 bytes. The same applies to P-TRD2 and thereafter. It should be noted that the recording date and time of the disk is entered with the sector 76 × 4 bytes of the sector 2 as the head.

Here, the sector 0 of the UTOC area A ₂₂ is
Information of Link-P is included in each track information of the sector 1. This Link-P indicates where the song is connected next in sector 0, and in sector 1 where the name of the song is connected next. Therefore, even if the tune is erased, the two tunes are made one, or the number of characters of the track name is increased later, it is possible to easily cope with it.

In the disk recording / reproducing apparatus 1 of this embodiment, the magnetic head 1 is irradiated onto the disk 11b rotated by the spindle motor 12 at a constant linear velocity while irradiating laser light from the optical pickup 13, for example.
By applying a modulation magnetic field according to the recording data by 0, audio data is magneto-optically recorded along the recording track of the recording / reproducing area A ₂₀ of the disk 11b, and a reproduction-only area of the disk 11b. By tracing the recording tracks of A ₁₀ and the recording / reproducing area A _{20 with} the laser beam by the optical pickup 13,
A / D converter 2 and D / A for inputting / outputting an audio signal for optically reproducing audio data
A converter 21, a level detection circuit 3 for detecting a signal level indicated by audio data obtained by digitizing an audio signal by the A / D converter 2, a system controller 4 for controlling the entire system, and a compression for performing compression / expansion processing on the audio data. A / decompression circuit 6, a memory controller 7 for temporarily storing audio data in the buffer memory 18, an encoder / decoder 8 for performing conversion processing corresponding to the disk format, a magnetic head drive circuit 9 for driving the magnetic head 10, A feed motor 14 for moving the magnetic head 10 and the optical pickup 13, a spindle motor 12, a servo control circuit 15 for controlling the optical pickup 13 and the feed motor 14, and a reproduction output obtained by the optical pickup 13 for the encoder / decoder. 8, service Consisting includes an RF circuit 16 supplies the servo control circuit 15, an address decoder 17.

When the optical pickup 13 records data in the recording / reproducing area A ₂₀ of the disk 11b, the magnetic head 10 is driven by the head drive circuit 9 and a modulation magnetic field corresponding to the recording data is applied. Data recording is performed magneto-optically by irradiating the target track in the recording / reproducing area A ₂₀ with laser light. The optical pickup 13 detects the reflected light of the laser light applied to the target track to detect a focus error by the so-called astigmatism method and a tracking error by the 3-beam method. Further, when reproducing data from the reproduction-only area A ₁₀ of the disc 11b, the optical pickup 13 outputs a reproduction signal obtained by detecting a change in the amount of laser light reflected from the target track. In addition, the disc 1
When data is reproduced from the recording / reproducing area A _{20 of} 1b, a reproduction signal obtained by detecting a difference in polarization angle (Kerr rotation angle) of the reflected light of the laser light from the target track is output.

The output of the optical pickup 13 is supplied to the RF circuit 6. The RF circuit 16 extracts a focus error signal or a tracking error signal from the output of the optical pickup 13 and supplies it to the servo control circuit 15, and binarizes a reproduction signal to produce the address decoder 17 and the encoder / decoder 8. Supply to.

The servo control circuit 15 is composed of, for example, a focus servo control circuit, a tracking servo control circuit, a spindle motor servo control circuit, a sled servo control circuit, and the like. The focus servo control circuit controls the focus of the optical system of the optical pickup 13 so that the focus error signal becomes zero. Further, the tracking servo control circuit controls the tracking of the optical system of the optical pickup 13 so that the tracking error signal becomes zero. Further, the spindle motor servo control circuit controls the spindle motor 12 so as to rotate the magneto-optical disk 2 at a predetermined constant linear velocity. Further, the sled servo control circuit controls the feed motor 14 so as to move the optical pickup 13 and the magnetic head 10 to the target track position of the disk 11b designated by the system controller 4. Further, the servo control circuit 15 that performs various control operations as described above.
Supplies the system controller 4 with information indicating the operating state of each part controlled by the servo control circuit 15.

Further, the system controller 4 controls the operation of the key input operation section 19 according to the operation input by various key operations such as a power key, an eject key, a reproduction key, a primary stop key, a stop key, and a record key. . The system controller 4 also uses the optical pickup 13 and the magnetic head 1 based on address information in sector units reproduced from the recording tracks of the disk 11b.
0 manages the recording position and reproducing position on the recording track traced by 0. The system controller 4 is
The TOC data read from the lead-in area A ₁₂ of the read-only area A ₁₀ of the disk 11b is stored R
An AM is built in, and the reproduction position of the program area A ₁₁ of the reproduction-only area A ₁₀ is managed based on this TOC data. Further, the system controller 7 stores the UTOC data read from the UTOC area A ₂₂ of the recording / reproducing area A ₂₀ of the disk 11b in the RAM, and based on the UTOC data, the program area of the recording / reproducing area A ₂₀ . It manages the recording position and playback position for A ₂₁ .

The system controller 7 is a mini disc 11 mounted on the disc recording / reproducing apparatus.
Time information such as the total playing time, elapsed time of the song being played, remaining playing time of the song being played, overall remaining playing time,
Display control is also performed to display the track number of the song being played on the display 20. For a disc on which a disc name or track name is recorded, the disc name or track name is displayed on the display 20.
To display. Further, if the recording date and time of the song or disc is recorded, the recording date and time is displayed on the display 20.

In the disc recording / reproducing apparatus of this embodiment, the audio signal supplied to the input terminal 1a in the recording mode has a sampling frequency of 44.1 kHz and a quantization bit number of 16 bits by the A / D converter 2. Digitized.

The audio data obtained by the A / D converter 2 is the level detector 3 and the compression / expansion circuit 6.
Is supplied to. Then, the compression / expansion circuit 6 converts the audio data on the audio data time axis into audio data on the frequency axis by a modified DCT (Modified Discreate Cosine Transform) operation and performs compression processing.

The audio data compressed by the compression / expansion circuit 6 has a data capacity of 1 cluster or more (for example, 1 Mbit) via the memory controller 7.
Is stored once in the buffer memory 18 having the above, is read from the buffer memory 18, and is supplied to the encoder / decoder 8 as recording data.

In this encoder / decoder 8, the audio data is subjected to error correction processing using a cross interleaved reed solomon code (CIRC) as an error correction code, and then EFM (8- 14 modulation) to generate recording data.

The recording data thus generated is supplied to the magnetic head 10 via the head drive circuit 9.
As a result, the magnetic field modulated by the recording data is applied to the disc 11b of the mini disc 11. In addition, the laser light from the optical pickup 13 is used for the mini disc 1 described above.
One disk 11b is irradiated. As a result, the recording data is magneto-optically recorded on the disc 11b of the mini disc 11.

Data is recorded in units of clusters. One cluster has 36 sectors, and one sector (corresponding to one subcode block of compact disc) has a size of 5.
There are 5 sound groups. 32 sectors in one actual cluster are valid data, and the remaining 4 sectors are used as a linking area for adjusting the timing of the rising of the magnetic field of the magnetic head at the start of recording and the control of laser power.

Further, the position on the disc at the time of recording is designated by the address wobble recorded in the groove provided along the track of the disc 11b. This address is detected by the address decoder 17,
It is given to the encoder / decoder 8.

Further, in the reproduction mode, the recording signal of the disc 11b of the mini disc 11 is reproduced by the optical pickup 13. This reproduction signal is supplied to the encoder / decoder 8 as reproduction data via the RF circuit 16. Then, the encoder / decoder 8 performs EFM demodulation on the reproduced data and further performs error correction processing.

The reproduced data that has been subjected to error correction processing by the encoder / decoder 8 is temporarily stored in the buffer memory 18 via the memory controller 7 and is read from the buffer memory 18 to be used in the compression / expansion circuit. 6 is supplied. The compression / expansion circuit 6 reproduces the audio data on the time axis by subjecting the reproduction data to expansion processing corresponding to the compression processing at the time of recording. Then, the D / A converter 21 generates an analog audio signal by analogizing the audio data supplied from the compression / expansion circuit 6, and outputs this analog audio signal from the output terminal 22.

The buffer memory 18 has a storage capacity for storing reproduction data of about 0.9 seconds corresponding to audio data of about 3 seconds. As a result, even if the recording signal of the disk 11b cannot be read by the optical pickup 13 in a state where the reproduction data is stored in the buffer memory 18 by the storage capacity, the reproduction signal can be continuously output for about 3 seconds. By returning the optical pickup 13 to its original position, re-accessing it, and reading the signal again, it is possible to prevent the occurrence of skipped sound.

In the disk recording / reproducing apparatus of this embodiment, when performing the above-mentioned recording operation, the system controller 4 performs recording as shown in the flowchart of FIG. 6 based on the detection output of the level detector 3. It is designed to control.

That is, the system controller 4
When the recording mode is set, first performs control to start recording in the first step a, and then moves to the second step b.

In the second step b, the level detector 3 is
The signal level of the audio signal to be recorded, that is, the audio level is determined to be a predetermined level (for example, −
80 dB) is determined. And
In the second step b, the above determination process is repeated until the determination result is "YES", that is, the voice level becomes -80 dB or more, and the start of voice is awaited in the recording state. When the determination result in the second step b is "YES", the process proceeds to the next third step c to reset the timer and then proceeds to the next fourth step d.

Here, the timer is for measuring the time when the voice level is below a predetermined level, and is built in the system controller 4. An address counter that counts the address detected by the address decoder 17 can be used as the timer.

In the fourth step d, the level detector 3
Based on the detection output by, the determination process of whether or not the audio level is lower than a predetermined level (for example, -80 dB) is performed. Then, in the fourth step d, when the determination result is “NO”, that is, the voice level is −80 dB or more, the process returns to the second step b, and the second step b.
To the fourth step d are repeated. As a result, the recording state is continued while resetting the timer with respect to the audio signal having the voice level equal to or higher than the predetermined level. In addition, in the fourth step d, the determination result is “Y
When "ES", that is, the audio level becomes less than -80 dB, the process proceeds to the next fifth step e.

In the fifth step e, the above-mentioned third step c
At the specified time (for example, 2
(0 second) A determination process of whether or not it has elapsed is performed. Then, in the fifth step e, when the determination result is "NO", that is, when the predetermined time has not elapsed since the timer was last reset, the process returns to the fourth step d, and the voice level determination process is repeated. As a result, the audio level becomes -8 before the predetermined time has elapsed since the timer was last reset.
When it rises to 0 dB or more, the process returns from the fourth step d to the second step b, and the recording state is continued while resetting the timer. Further, in the fifth step e, when the determination result is “YES”, that is, when the sound level is less than −80 dB for a predetermined time after the timer is reset, the next sixth step d is performed.

In the sixth step d, control for stopping the recording is performed, and then the seventh step f is performed. This allows
When the audio level is below -80 dB for a predetermined time, the recording can be automatically stopped.

Then, in the next seventh step f, on the RAM, the data for a predetermined time (for example, 18 seconds) at the end of the audio data recorded in this way is divided into audio data of other songs. Rewrite the UTOC data. As a result, the silent invalid recording portion generated at the end of the recorded audio data can be automatically separated from the valid recording portion.

Further, in the next eighth step f, the RAM is so arranged as to delete the last song divided in the seventh step f, that is, the song consisting of the data for the predetermined time.
After rewriting the UTOC data, the UTOC data is read from the RAM and recorded in the UTOC area A ₂₂ of the recording / reproducing area A ₂₀ of the disk 11b. As a result, it is possible to automatically delete the silent invalid recording portion generated at the end portion of the recorded audio data.

By performing such recording control, in the disc recording / reproducing apparatus of this embodiment, recording is automatically stopped when the audio level is below -80 dB for 20 seconds during recording, and the last recording is performed. 18 seconds worth of audio data can be automatically deleted.

In the disk recording / reproducing apparatus of this embodiment, in the eighth step f, the music composed of the data for the predetermined time is automatically deleted as the invalid recording portion, but the data for the predetermined time is deleted. The song composed of the data may be deleted by manual operation of the key input operation unit 19.

In the disc recording / reproducing apparatus, instead of performing the recording control shown in the flowchart of FIG. 6 by the system controller 4 on the basis of the output detected by the level detector 3 when performing the recording operation, Figure 7
The recording control as shown in the flowchart of FIG.

That is, when performing the recording control as shown in the flowchart of FIG.
When the recording mode is set, first, control is performed to start recording in the first step i, the memory is cleared in the second step j, and then the process proceeds to the third step k.

Here, the memory is for storing an address indicating a recording position of audio data, and is built in the system controller 4.

In the third step k, the level detector 3
The signal level of the audio signal to be recorded, that is, the audio level is determined to be a predetermined level (for example, −
80 dB) is determined. And
In the third step k, if the determination result is "YES", that is, the sound level is -80 dB or more, the fourth step l
Then, the above-mentioned memory is cleared and the process moves to the next fifth step k. Further, in the third step k, if the determination result is “NO”, that is, the sound level is less than −80 dB, the process proceeds to the seventh step o.

In the fifth step m, the level detector 3 is
Based on the detection output by, the determination process of whether or not the audio level is lower than a predetermined level (for example, -80 dB) is performed. Then, in the fifth step m, if the determination result is "NO", that is, the sound level is -80 dB or more, the process moves to the seventh step o. Also, this fifth step m
Then, the determination result is "YES", that is, the voice level is -8.
When it is less than 0 dB, the process moves to the sixth step n, the address indicating the recording position of the audio data is stored in the memory, and then the process returns to the third step k to repeat the sound level determination process. As a result, the voice level
The above memory is cleared every time it exceeds 80 dB,
An address indicating the head recording position of the audio data whose voice level is less than -80 dB is stored in the memory.

Further, in the seventh step o, it is judged whether or not the recording is stopped. Then, in the seventh step o, when the determination result is "NO", that is, in the recording state, the process returns to the third step k and the voice level determination process is repeated. In addition, in the seventh step o, the process proceeds to the next eighth step p.

Here, the system controller 4 is
When a stop operation input by the key input operation unit 19 is accepted, or when the recording / reproducing area A _{20 of the} disk 11b is received.
If it is no longer recordable area in the program area A ₂₁ of, and performs a control to stop the recording.

In the eighth step p, it is determined whether or not an address indicating the head recording position of audio data having a voice level of less than -80 dB is stored in the memory. Then, in the eighth step p, if the determination result is “YES”, that is, the address is stored in the memory, the process proceeds to the next ninth step q, and the determination result is “YES”, that is, the address is stored in the memory. If is stored, the process moves to the 11th step s.

In the ninth step q, the audio data recorded in this way is divided into UTO on the RAM so that the audio data after the address stored in the memory is divided as the audio data of another song.
Rewrite C data. As a result, the silent invalid recording portion generated at the end of the recorded audio data can be automatically separated from the valid recording portion.

In the next tenth step r, the UTOC data is rewritten on the RAM so that the last song divided in the ninth step q, that is, the song of the invalid recording portion is deleted.

Further, in the next eleventh step s, the UTOC data is read from the RAM and recorded in the UTOC area A ₂₂ of the recording / reproducing area A ₂₀ of the disk 11b. As a result, when there is a silent invalid recording portion at the end of the recorded audio data, this invalid recording portion can be automatically deleted.

In the tenth step r, the tune of the invalid recording portion may be deleted by the manual operation of the key input operation section 19.

[0063]

As described above, according to the present invention, a main data recording area for recording main data and a management data recording area for recording management data for managing a recorded area and a recordable area of the main data recording area. In a disk recording / reproducing apparatus for recording / reproducing main data and management data to / from a recording medium having a storage medium, address data of the main data recording area in which main data having a predetermined level or less is recorded is stored in a storage means, and the main data is recorded. After the end of the recording, the management data is rewritten by the recording control means so as to divide the data at the predetermined level or less of the recording end portion of the main data into other main data based on the address data stored in the storage means. , Nulling of silences that occur at the end of a recorded audio signal, for example It can be automatically separated from the effective recording portion of the sound part. Further, in the disc recording / reproducing apparatus according to the present invention, after the recording of the main data is completed, the recording control means divides and deletes the data of the predetermined level or less at the recording end portion of the main data as other main data. Moreover, since the management data recorded in the management data recording area is rewritten, the silent invalid recording portion generated at the end of the recorded audio signal can be automatically deleted. Further, according to the present invention, a disc-shaped recording having a main data recording area for recording main data, a management data area for recording management data for managing a recorded area and a recordable area of the main data recording area. In a disk recording device for recording on a medium, the level detecting means determines whether or not the signal level of the input main data is below a predetermined level, and the signal level of the input main data is determined by the level detecting means. The recording position of the recorded area of the main data determined to be below a predetermined level is stored in the memory means, and
When it is determined that the signal level of the main data input by the level detecting means is equal to or higher than a predetermined level, the memory control means erases the recording position stored in the memory means, and the disc-shaped recording is performed. When it is determined by the first determining means that determines whether the recording operation of the main data on the medium is stopped, the memory means is determined when the recording operation of the main data on the disk-shaped recording medium is stopped. Whether or not the recording position is stored in the memory is discriminated by the second discriminating means, and when the recording operation of the main data on the disc-shaped recording medium is stopped by the second discriminating means, the memory means is stored. When it is determined that the recording position is stored, the control data is set so that the control unit divides the main data based on the recording position. Since you can edit, for example, you can automatically stop recording when the audio signal to be recorded becomes silent, and the invalid recording part of the silent state that occurs at the end of the recorded audio signal is automatically set to the valid recording part. Can be separated into

Further, according to the present invention, there is provided a main data recording area for recording main data, a management data area for recording management data for managing a recorded area and a recordable area of the main data recording area. In a disc recording apparatus for recording on a disc-shaped recording medium, the level detection means determines whether or not the signal level of the input main data is below a predetermined level, and the main data input by the level detection means is discriminated. The recording position of the recorded area of the main data, which is determined to have the signal level lower than the predetermined level, is stored in the memory means, and the signal level of the main data input by the level detection means is higher than the predetermined level. When it is determined that there is a recording position, the memory control unit erases the recording position stored in the memory unit, When it is determined that the recording operation of the main data on the disk-shaped recording medium is stopped by the first determination means that determines whether the recording operation of the main data on the recording medium is stopped or not. Whether or not the recording position is stored in the memory means is discriminated by the second discriminating means, and when the recording operation of the main data on the disc-shaped recording medium is stopped by the second discriminating means. If it is determined that the recording position is stored in the memory means, the control means edits the management data so that the main data is divided based on the recording position. The recording can be automatically stopped when the audio becomes silent, and the invalid recording part of the silent state that occurs at the end of the recorded audio signal is the valid recording part. It can be automatically separated.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a disc recording / reproducing apparatus to which the present invention is applied.

FIG. 2 is a schematic plan view for explaining the structure of a disc used in the disc recording / reproducing apparatus.

FIG. 3 is a UTOC provided in a recording / reproducing area of the disc.
It is a figure which shows the structure of the sector 0 of a field typically.

FIG. 4 is a UTOC provided in a recording / reproducing area of the disc.
It is a figure which shows the structure of the sector 1 of an area | region typically.

FIG. 5 is a UTOC provided in a recording / reproducing area of the disc.
It is a figure which shows typically the structure of the sector 2 of an area | region.

FIG. 6 is a flowchart showing a recording control procedure by a system controller in the disc recording / reproducing apparatus.

FIG. 7 is a flowchart showing another procedure of recording control by the system controller in the disc recording / reproducing apparatus.

[Explanation of symbols]

1 disk recording / reproducing device, 2 A / D converter, 3 level detector, 4 system controller, 6 compression / expansion circuit, 7 memory controller, 8 encoder / decoder, 9 magnetic head drive circuit, 10 magnetic head,
11 mini disk, 11b disk, 12 spindle motor, 13 optical pickup, 14 feed motor, 15 servo control circuit, 16 RF circuit, 17 address decoder

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ identification code FI G11B 27/02 G11B 27/02 K 27/034 27/034 (58) Fields investigated (Int.Cl. ⁷ , DB name) G11B 27/00-27/34

Claims (6)

(57) [Claims] 1. A disk-shaped recording medium having a main data recording area for recording main data, and a management data recording area for recording management data for managing a recorded area and a recordable area for the main data recording area. In a disk recording device for recording main data and management data, based on the address data stored in the storage device and storage device that stores the address data of the main data recording area in which main data of a predetermined level or less is recorded, A disk recording apparatus comprising a recording control means for rewriting management data so as to divide data of a predetermined level or less at a recording end portion of the main data into other main data after recording the main data. 2. The recording control means rewrites the management data so that after the recording of the main data is completed, the data at the recording end portion of the main data and below the predetermined level is divided and deleted as other main data. The disk recording device according to claim 1, wherein 3. A level detecting means for determining whether or not a signal level of main data inputted is below a predetermined level, and a signal level of main data inputted by said level detecting means is below a predetermined level. When it is determined that the signal level of the main data, which is stored in the storage unit that stores the recording position information of the recorded area of the main data determined to be above and is input by the level detection unit, is equal to or higher than a predetermined level. And storage control means for erasing the recording position information stored in the storage means, the recording control means discriminating whether or not the operation of recording the main data on the disc-shaped recording medium is stopped.
And the first determining means determines whether or not the recording operation of the main data on the disc-shaped recording medium is stopped, it is determined whether the recording position information is stored in the storage means. Second determining means for determining, and the second
If the discriminating means discriminates that the recording position information is stored in the storage means when the recording operation of the main data on the disc-shaped recording medium is stopped, the main position is determined based on the recording position information. 2. The disc recording apparatus according to claim 1, further comprising control means for editing the management data so that data division processing is performed. 4. The management data recorded in the management data area includes start address and end address of main data recorded in the main data recording area, start address and end address of recordable area of the main data recording area. 4. The disk recording apparatus according to claim 3, wherein the control means edits the management data by using the recording position information stored in the storage means as the end address of the recorded main data. 5. The management data recorded in the management data area includes start address and end address of main data recorded in the main data recording area, start address and end address of recordable area of the main data recording area. 4. The control means edits the management data by using the recording position information stored in the storage means as the start address of the recordable area.
The described disk recording device. 6. The control means edits the management data so as to delete main data located rearward with reference to the recording position information stored in the storage means. Disc recorder.