JP2001043663A - Optical disk recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform recording or reproducing of a packet of another program area even during the recording of the read-in area and read-out area by enabling the recording, interrupting of the recording and resuming of the recording of the read-in area and the read-out area of an optical disk capable of overwritingly recording data to be performed in a small unit. SOLUTION: A controller 8 performs recording processing of a read-in area and the read-out area of an optical disk 10 in background and when a request for the recording or the producing of user data in the program area is transmitted from a host computer during the recording processing, the controller 8 interrupts the recording processing of the read-in area and the read-out area temporarily to execute the recording or the reproducing of the use data and after execution is completed, it resumes the recording processing of the read-in area and the read-out area and continues this processing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an optical disk recording / reproducing apparatus such as a CD-RW drive for recording information on an optical disk such as a re-recordable CD-RW as an information recording medium.

[0002]

2. Description of the Related Art The minimum reproduction unit of a compact disc (CD) is a unit called a block, and one block includes information of 2048 to 2352 bytes (bytes). On the other hand, the minimum recording unit is a unit called a packet. One or more reproducible user data blocks are preceded by five link blocks (one link block: Link Block and four run-in blocks: Run). -In Block) and the following two link blocks (two run-out blocks: Run-
Out Block).

[0003] These link blocks (total of 7 blocks per packet) are used when recording data on a CD.
This block is defined by a standard (recording rule) necessary for connecting packets, and the block does not include user data. Hereinafter, this recording rule is called a linking rule.

[0004] There are a track-at-once method and a packet write method as recording methods for a write-once compact disc (CD-R) and a rewritable compact disc (CD-RW).

[0005] The track-at-once method is a recording unit that can record up to 99 tracks (a maximum of 99 pieces on a CD medium), and its start address, end address, and the like are stored in another area of the medium in a table of contents information (table of contents: T
This is recorded in one packet at a time, and the user data blocks in the track are continuous, and there is no link block between the user data blocks.

[0006] The packet write method is a method in which the above-described track is divided into a plurality of packets, and recording is performed for each packet. Since the recording is performed in packet units, user data blocks in one track are discretely present, and a link block exists between the user data blocks.

This packet write system is further classified into two types, a fixed length packet write system and a variable length packet write system. The number of user data blocks in a packet is called a packet length. A system in which this packet length is fixed in a track is a fixed length packet write system, and a system in which packets of various packet lengths are mixed in a track is a variable length packet write system. Called the method.

A UDF (Universal Disk Format: Universal Disk Fo) is used as a file system using the fixed-length packet write method.
rmat).

[0009] UDF is a file system that uses a recording format that takes advantage of the characteristics of each device, and is used on a CD-RW. Uses the light method. Since the reproduction is possible at random in units of blocks and the recording is possible in units of packets, it is also called random UDF.

In this random UDF, it is necessary to format an optical disk (media) in advance. The format is an operation of recording a fixed packet on the entire surface of an optical disc or a designated area and filling the area with packets. By performing such a format, it is possible to randomly record / reproduce an optical disk.

However, since the formatting operation completely fills the entire area or the designated area with the packets, the operation time becomes extremely long. The recording capacity of a CD-RW is represented by time from its historical background (about 9 MBytes per minute).
The recording time is 4 minutes, and it takes about 40 minutes to perform the double speed recording if TOC information is included.

[0012] Once formatted, CD-RWs can be randomly recorded / reproduced thereafter, but when using blank media for the first time, the user must wait about 40 minutes.

The area to be formatted is large, and a lead-in area (an area in which the TOC and the like are recorded, a program area (an area in which a packet including user data is recorded), and a lead-in (Lead-in) area.
out) area (area having a predetermined size recorded outside the program area) and PMA (area inside the lead-in area including the TOC information).

The lead-in area and the lead-out area are areas required when a medium is reproduced by a read-only device (such as a CD-ROM drive), and are recorded by a recording device (such as a CD-R / RW drive). In order to reproduce an optical disk (media) by a reproduction-only device, it is necessary to record the lead-in area and the lead-out area before discharging from the recording device.

A technique for performing the format processing in the background is disclosed in, for example, Japanese Patent Application Laid-Open No. 10-32092.
No. 5 and Japanese Patent Application No. 9-227921.

Among them, recording / interruption of the lead-in area /
Regarding the method of restarting, the recording amounts of the lead-in area and the lead-out area are as shown in Table 1, and conventionally, these were recorded at once.

[0017]

[Table 1]

[0018]

However, in the above-mentioned conventional technique, for example, in the recording of the lead-in area in the first session, even a double-speed recording apparatus takes about one minute (recording speed of the double-speed recording apparatus = 150 sectors /). Second), and during this time, if packet recording or reproduction in the program area cannot be performed, file input / output cannot be performed, and there is a problem that the user has to wait.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and enables recording, recording interruption, and recording resumption of a lead-in area and a lead-out area of an optical disk on which data can be overwritten in small units. It is another object of the present invention to be able to record or reproduce a packet in another program area even during recording in a lead-in area and a lead-out area.

[0020]

In order to achieve the above object, the present invention provides a recording means for recording a lead-in area and a lead-out area on an optical disk capable of overwriting data, and a recording means for recording data on the optical disk. In the optical disc recording / reproducing apparatus provided with reproducing means for reproducing the read data, the recording processing of the lead-in area and the lead-out area is performed in the background, and during the processing, a request for recording or reproducing user data in the program area is made. If it comes, the recording process of the lead-in area and the lead-out area is temporarily interrupted, the recording or reproduction of the user data is performed, and after the execution, the recording processing of the lead-in area and the lead-out area is resumed and continued. A control means is provided.

In the above-mentioned optical disk recording / reproducing apparatus, a recording unit including information repeatedly recorded in the lead-in area and the lead-out area is defined.
When a recording unit is determined so that information corresponding to a joint between the recording units and which is difficult to reproduce is not biased to specific information, and the recording process of the lead-in area and the lead-out area is temporarily stopped, During the recording of the recording unit, the recording is interrupted at the end of the recording of an arbitrary recording unit without interruption, and the recording or reproduction of the user data is performed, and after that, the next recording of the lead-in area and the lead-out area is performed. It is preferable to provide a means for restarting the recording process from the unit and continuing.

Further, in the above-mentioned optical disk recording / reproducing apparatus, if the optical disk is requested to be ejected during the recording processing of the lead-in area and the lead-out area, the recording is not interrupted during the recording of the recording unit. It is preferable to provide means for interrupting the recording at the end of recording of an arbitrary recording unit and ejecting the optical disc.

In the above-described optical disk recording / reproducing apparatus, when the optical disk once ejected during the recording process of the lead-in area and the lead-out area is inserted again, the recorded lead-in area and the read-out area are read out. It is preferable that information to be collected and added from the recording unit of the area is configured, and a unit for additionally recording the unrecorded recording unit is provided.

Further, in the above-described optical disk recording / reproducing apparatus, if there is a request to eject the optical disk during the recording processing of the lead-in area and the lead-out area, the recording is not interrupted during the recording of the recording unit. It is preferable to provide means for interrupting the recording at the end of recording of an arbitrary recording unit, recording the recording end position at a predetermined location on the optical disk, and then ejecting the optical disk.

Further, in the above-described optical disk recording / reproducing apparatus, if the optical disk once ejected during the recording processing of the lead-in area and the lead-out area is inserted again, the recorded lead-in area and the read-out area are read out. Information is collected from the recording unit of the out area to constitute information to be additionally recorded, a recording end position recorded at a predetermined position on the optical disk is reproduced to obtain an additional recording position, and unrecorded recording is performed from the additional recording position. It is preferable to provide a unit for adding a unit.

An optical disk recording / reproducing apparatus according to a first aspect of the present invention processes the recording of the lead-in area and the lead-out area of the optical disk in the background, so that the recording / reproducing of the user data to / from the optical disk is performed. The recording processing of the area and the lead-out area can be advanced, and the recording or reproduction request of the user data can be executed during the recording of the lead-in area and the lead-out area. The user data recording operation can be performed without waiting.

According to a second aspect of the present invention, there is provided an optical disk recording / reproducing apparatus which determines a recording unit for recording in a lead-in area and a lead-out area of an optical disk, the recording unit includes one kind of information, and a joint is formed. Even if the recording of the lead-in area and the lead-out area is interrupted and restarted, the information necessary for reproduction can be easily read by preventing the deviation.

Further, the optical disk recording / reproducing apparatus according to the third aspect of the present invention determines a recording unit for recording in the lead-in area and the lead-out area of the optical disk, and the recording unit includes one type of information, and the joint is Even if the recording of the lead-in area and the lead-out area is interrupted and restarted, the information necessary for reproduction can be easily read by preventing the deviation.

According to a fourth aspect of the present invention, there is provided an optical disk recording / reproducing apparatus in which recording in a lead-in area and a lead-out area is interrupted, and after the optical disk is ejected and re-inserted, the lead-in area and the lead-out area of the optical disk are re-inserted. Can be easily added and ejected even during recording in the lead-in area and lead-out area so that the recording result is not adversely affected.

Furthermore, the optical disk recording / reproducing apparatus according to the fifth aspect of the present invention interrupts the recording of the lead-in area and the lead-out area and records the recording end position (the next additional recording position) when ejecting the optical disk. It is possible to accurately obtain the additional recording position, and to surely overwrite and erase the information before formatting.

Further, in the optical disk recording / reproducing apparatus according to the sixth aspect of the present invention, when the recording of the lead-in area and the lead-out area is interrupted and the optical disk is ejected, the recording end position (the next additional recording position) is recorded. Since the information is reproduced at the time of additional recording after the optical disk is inserted to obtain the additional recording position, the additional recording position can be accurately obtained, and the information before formatting can be surely overwritten and erased.

[0032]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of an optical disk drive which is an embodiment of the optical disk recording / reproducing apparatus of the present invention.

The optical disk recording / reproducing apparatus uses the optical disk 1
A spindle motor (hereinafter, referred to as “motor”) 1 for rotating 0, an optical pickup 3 on which a semiconductor laser is mounted and which irradiates a recording area of the optical disk 10 with laser light L;
A coarse motor 2 for moving the optical pickup 3 in the radial direction of the optical disk 10 in cooperation with a seek motor provided therein is provided.

A rotation control system 4 for controlling the rotation of the motor 1, a coarse motor control system 5 for controlling the drive of the coarse motor 2, an optical pickup control system 6 for controlling the optical pickup 3, A signal processing system 7 for transmitting and receiving a signal of electronic information read by the pickup 3 and a signal of electronic information to be written to a recording area of the optical disk 10, and controls the control systems 4 to 6 and the signal processing system 7. A controller 8 is implemented by a microcomputer including a CPU, a ROM, a RAM, and the like, which controls recording of the IN area and the lead-out area, and control processing of recording interruption and recording restart.

Further, the controller 8 is connected to a host computer via an external interface 9.
It also sends electronic information read from the optical disk 10 to the host computer and receives electronic information to be written on the optical disk 10 from the host computer.

Then, while rotating the optical disk 10 by the motor 1, the optical pickup 3 is moved to the optical disk 1.
0 in the radial direction to irradiate a laser beam L from a semiconductor laser of the optical pickup 3 onto a recording area on the recording surface of the optical disk 10 to record or reproduce electronic information, and control the optical disk 10 according to the present invention. Perform processing.

At the time of data reproduction, a laser beam is emitted with the reproduction power, and the data is reproduced based on the reflected light.

That is, the controller 8 or the like includes a recording unit for recording a lead-in area and a lead-out area on an optical disk capable of overwriting and recording data, a reproducing unit for reproducing data recorded on the optical disk, The recording process of the in-area and the lead-out area is performed in the background, and if a recording or reproduction request of the user data in the program area is received during the processing, the recording processing of the lead-in area and the lead-out area is temporarily suspended, The recording / reproducing of the user data is performed, and after that, the recording / reproducing function of the control unit is resumed and the recording process of the lead-in area and the lead-out area is resumed.

Further, a recording unit including one type of information repeatedly recorded in the lead-in area and the lead-out area is determined, and information which is difficult to reproduce at a joint between the recording units is biased to specific information. Set the recording unit so that there is no
When temporarily stopping the recording process of the lead-in area and lead-out area, do not interrupt the recording during recording of the recording unit, suspend recording at the end of recording of any recording unit, and perform recording or reproduction of user data. The function of means for resuming and continuing the recording process from the next recording unit of the lead-in area and the lead-out area after the execution is performed.

Further, when there is a request to eject the optical disk during the recording processing of the lead-in area and the lead-out area,
During the recording of the recording unit, the recording function is not interrupted, and at the end of recording of an arbitrary recording unit, the recording is interrupted and the optical disk is discharged.

When the optical disk once ejected during the recording process of the lead-in area and the lead-out area is inserted again, information is collected from the recording unit of the already recorded lead-in area and lead-out area and is additionally recorded. Compose information,
It functions as a means for additionally recording an unrecorded recording unit.

Further, when there is a request to eject the optical disk during the recording processing of the lead-in area and the lead-out area,
During the recording of the recording unit, the recording is interrupted at the end of the recording of an arbitrary recording unit without stopping the recording, and the recording end position is recorded at a predetermined location on the optical disk, and then the optical disk is discharged. .

Further, when the optical disk once ejected during the recording process of the lead-in area and the lead-out area is inserted again, information is collected from the recording units of the already recorded lead-in area and lead-out area and additionally recorded. The information recording apparatus performs the function of a unit that configures information to be recorded, reproduces a recording end position recorded at a predetermined position on the optical disc, acquires an additional recording position, and additionally records an unrecorded recording unit from the additional recording position.

FIG. 2 is an explanatory diagram showing a format example of a packet which is a unit of information to be recorded on the optical disc 10. As shown in the figure, the packet 21 starts with a link block (Link Block) 22, a run-in block (Run-In Block) 23, and ends with a run-out block (Run-Out Block) 25. The run-in block (Run-In Bl)
ock) and run-out block (Run-Out Bl)
ock), there is a user data block 24 in the program area.

FIG. 3 is an explanatory diagram showing the concept of the format process for the optical disc 10. As shown in the figure, the recording area of the optical disk 10 is filled with a fixed-length packet P on the entire surface of the medium or a designated area by the format processing by the optical disk drive.

FIG. 4 is an explanatory diagram showing the concept of a recording unit of the lead-in area of the optical disk 10. As shown in FIG. As shown in the drawing, certain information is repeatedly recorded in the TOC information recorded in the lead-in area. The certain amount is track information a in the session and disk information b, c, d, f. . . Consists of The track amount in a session at the time of formatting is usually “1”, and the disc information also includes about six types. FIG.
The example shown in FIG. 1 also has a configuration in which track information = 1 and disk information = 6.

The number of sectors required for one type of recording in the lead-in area is three sectors, and based on the provision that track information and disk information must be recorded alternately, the above-mentioned fixed amount of TOC recording amount is Normally 36 sectors (recording 3 sectors of track information a, recording 3 of disc information a ')
Sector, three sectors for recording track information a, three sectors for recording disk information b ',. . . 3 sectors for recording track information a and 3 sectors for recording disk information f ′).

As shown in FIG.
A sector (three sectors for recording track information a in the above example) is used as a recording unit. In the figure, the sector number (Sector)
No. ) = N to the sector number (Sector N)
o. ) = N + 38 until the sector number (Sector N)
o. ) = N + 39 to the sector number (Sector N)
o. ) = N + 83, and the like as a recording unit.

As described above, it is possible to avoid a problem that necessary information cannot be reproduced because all necessary information is included in one recording unit, and information included in a joint is shifted for each recording unit. Can be.

Next, control processing of recording / suspending / resuming the lead-in area and the lead-out area of the present invention in the optical disk drive will be described.

FIG. 5 is a flow chart showing the control processing according to claim 1 of the present invention. In this control process, in step (indicated by “S” in the figure) 1, the lead-in area (Le
ad-in), Lead-out area (Lead-out)
Immediately after the start of the recording operation, the operation proceeds to step 2 to notify the user (host computer) of the operation completion, and proceeds to step 3 to start recording the lead-in area (Lead-in) and the lead-out area (Lead-out). .

Proceeding to step 4, it is determined whether or not a request for recording or reproducing user data for a user data block in the program area of the optical disk has been received from the host computer while recording the lead-in area and the lead-out area. If the recording or reproduction request of the lead-in area (Lead-i
n), the recording of the lead-out area (Lead-out) is temporarily suspended, and the process proceeds to step 6 to record or reproduce the user data packet. After the recording or reproduction is performed, the process proceeds to step 7 to proceed to the lead-in area (Lead-out). −i
n), it is determined whether or not the entire area of the lead-out area (Lead-out) has been recorded.

Then, in the judgment of step 7, the lead-in area (Lead-in) and the lead-out area (Lead-in)
If the entire area of (out) has not been recorded, the process returns to step 3 to resume the recording of the lead-in area (Lead-in) and the lead-out area (Lead-out), and repeats the above processing.

On the other hand, if it is determined in step 4 that the recording or reproducing request of the user data does not come from the host computer during the recording of the lead-in area and the lead-out area, the lead-in area (Lead-in) and the lead-out area (Le).
The recording process is continued until the entire area of (ad-out) has been recorded.

Then, in the judgment of step 7, the lead-in area (Lead-in) and the lead-out area (Lead-in) are read.
When the entire area of (out) has been recorded, the process proceeds to step 8, and the recording process of the lead-in area (Lead-in) and the lead-out area (Lead-out) ends.

Next, in the above-described control processing, if the recording of the lead-in area (Lead-in) is stopped at an arbitrary position, a problem may occur in the area reproduction of the lead-in area (Lead-in). Because CD-R ・ R
This is because W is difficult to reproduce data in the vicinity of a joint between recordings due to its characteristics, and cannot normally be reproduced.

For this reason, a mechanism is required so that necessary information can be reproduced even if recording is interrupted. Here, T recorded in the lead-in area (Lead-in)
As the OC information, certain information is repeatedly recorded.
The certain amount consists of track information in the session and information on the entire optical disc. The track amount in the session at the time of formatting is usually “1”, and the disc information also includes about six types.

The number of sectors required for one type of recording is three.
Based on the provision that the track information and the disk information must be recorded alternately, the TOC recording amount of the fixed amount is usually 36 sectors (recording 3 sectors of track information a, recording 3 sectors of disk information a ′). Sector, recording 3 of track information a, recording 3 of disk information b '
sector,. . . 3 sectors for recording track information a and 3 sectors for recording disk information f ′).

If this fixed amount and the next three sectors (the three sectors for recording track information a in the above example) are recorded at once, and recording can be interrupted only between recording units,
Since all necessary information is included in one recording unit, and information included in a joint is shifted for each recording unit, it is possible to avoid a problem that necessary information cannot be reproduced.

FIG. 6 is a flowchart showing a control process according to a second aspect of the present invention. In this control process, in step (indicated by "S" in the figure) 11, the lead-in area (L
read-in), lead-out area (Lead-ou)
t) Immediately after the start of the recording operation, the process proceeds to step 12 to notify the user (host computer) of the operation completion, and proceeds to step 13 to record the lead-in area (Lead-in) and the lead-out area (Lead-out). Begin to.

In step 14, it is determined whether a request for recording or reproducing user data has been received from the host computer during recording in the lead-in area and the lead-out area. Goes to step 15 to record to the boundary of the recording unit of the lead-in area (Lead-in) and lead-out area (Lead-out) and stop.

That is, information which is difficult to reproduce at a joint between recording units including information repeatedly recorded in a predetermined lead-in area and lead-out area is not biased to specific information. The recording is temporarily interrupted when the recording of any recording unit is completed based on the recording unit set in.

Then, the process proceeds to step 16 to record or reproduce the user data packet. After the recording or reproduction is performed, the process proceeds to step 17 to read the lead-in area (Le).
ad-in), Lead-out area (Lead-out)
It is determined whether or not the entire area has been recorded.

In the determination of step 17, the lead-in area (L
read-in), lead-out area (Lead-ou)
If the entire area of t) has not been recorded, the process returns to step 13 to resume the recording of the lead-in area (Lead-in) and the lead-out area (Lead-out) and repeat the above processing.

On the other hand, if the host computer does not request recording or reproduction of user data during recording of the lead-in area and the lead-out area in the judgment of step 14, the lead-in area (Lead-in) and the lead-out area (L)
The recording process is continued until the entire area of (head-out) has been recorded.

Then, in the judgment of step 17, the lead-in area (Lead-in) and the lead-out area (Lead-in)
-Out), when the entire area is recorded, step 18
Then, the recording process of the lead-in area (Lead-in) and the lead-out area (Lead-out) is completed.

Next, in the above-described control processing, the lead-in area (Lead-in) and the lead-out area (Lea
The recording amount of (d-out) is shown in Table 1, but an optical media ejection request may come in the middle of recording. Therefore, when the optical disk is ejected during recording, it is necessary to record the subsequent lead-in area (Lead-in) and lead-out area (Lead-out) when the optical disk is next inserted.

FIG. 7 is a flowchart showing a control process according to a third aspect of the present invention. In this control process, the lead-in area (L
read-in), lead-out area (Lead-ou)
t) Immediately after the start of the recording operation, the process proceeds to step 22 to notify the user (host computer) of the operation completion, and proceeds to step 23 to record the lead-in area (Lead-in) and the lead-out area (Lead-out). Begin to.

Proceeding to step 24, it is determined whether or not a request for ejection of a medium (optical disk) has been received from the host computer during recording in the lead-in area and the lead-out area.
When a media ejection request is received, the process proceeds to step 25, where recording is performed up to the boundary of the recording units of the lead-in area (Lead-in) and the lead-out area (Lead-out), and the recording is stopped.

That is, information which is difficult to reproduce at a joint between recording units including information repeatedly recorded in a predetermined lead-in area and lead-out area is not biased to specific information. The recording is temporarily interrupted when the recording of any recording unit is completed based on the recording unit set in.

Then, the flow advances to step 26 to execute a medium discharge process for discharging the optical disk, and the flow advances to step 27 to end this process.

On the other hand, if the medium ejection request is not received from the host computer in the judgment of step 24, step 2
8 to determine whether the entire area of the lead-in area (Lead-in) and the lead-out area (Lead-out) has been recorded. If the entire area has not been recorded, the process returns to step 23 to lead-in. The recording of the area (Lead-in) and the lead-out area (Lead-out) is resumed, and the above processing is repeated.

Then, in the judgment of step 28, the lead-in area (Lead-in) and the lead-out area (Lead-in)
When the entire area of -out) has been recorded, step 29
Then, the recording process of the lead-in area (Lead-in) and the lead-out area (Lead-out) is completed.

Next, a description will be given of a control process when the optical disc 10 is inserted again after the ejection of the optical disc 10 in the above control processing.

FIG. 8 is a flowchart showing a control process according to a fourth aspect of the present invention. This control process starts at step (indicated by "S" in the figure) 31 and proceeds to step 32 where a medium (optical disk) is inserted, and then proceeds to step 33 where lead-in of the inserted optical disk is performed. It is determined whether the entire area (Lead-in) and lead-out area (Lead-out) have been recorded.

If it is determined in step 33 that the entire lead-in area and lead-out area of the inserted optical disk have not been recorded, the process proceeds to step 34, where the recorded lead-in area (Lead-in) on the optical disk has been recorded. , Information is collected from the recording unit of the lead-out area (Lead-out).

Then, the process proceeds to step 35, where the information to be additionally recorded is recorded based on the collected information, and the contents of the lead-in area (Lead-in) and the lead-out area (Lead-out) to be additionally recorded are stored. Then, the process proceeds to step 36, where additional writing is performed on the lead-in area (Lead-in) and the lead-out area (Lead-out).
Proceeding to step 37, this process ends.

If it is determined in step 33 that the entire lead-in area and lead-out area of the inserted optical disk have been recorded, the process proceeds to step 37 to end this processing.

Next, when the optical disk 10 is a CD-RW, the lead-in area (Lead-in) and the lead-out area (Lead-out) are not always recorded in the unrecorded area.

For example, in the case where an already used CD-RW is reformatted and reused, a lead-in area (Lead-in) and a lead-out area (Lead-out area) at the time of previous use are used.
-Out) is recorded.

If the size of the area to be newly formatted or the number of tracks is different, the lead-in area (Lead-in) and the lead-out area (Lead-in) are read.
out), the lead-in area (Lead-in) and the lead-out area (Lea) in the previous use are different.
d-out) needs to be overwritten.

However, in the case of the above-described control processing, the lead-in area (Lead-in) and the lead-out area (L
When a medium ejection request is received from the host computer during recording of (head-out), the optical disc 10 is ejected, and re-inserted, and additional recording is performed. At this time, a lead-in area (Lead-in) recorded on the optical disc is used. , It becomes impossible to distinguish whether the sector of the lead-out area (Lead-out) is a newly formatted sector or information before formatting.

Therefore, before the medium is ejected, how far the lead-in area (Lead-in) and lead-out area (Lead-out) have been recorded (the next write-on position) is recorded on the optical disk 10 and after re-insertion. When additional writing is performed, by reading the additional writing position and performing additional writing from the position, the additional writing position can be accurately obtained, and the information before formatting can be surely overwritten and erased.

Next, the control processing will be described. FIG. 9 is a flowchart showing the control processing according to claim 5 of the present invention. In this control process, in step (indicated by “S” in the figure) 41, the lead-in area (Lead-i
n), lead-out area (Lead-out) Immediately after the start of the recording operation, the operation proceeds to step 42 to notify the end of the operation to the user (host computer), and the operation proceeds to step 43, wherein the lead-in area (Lead-in) is read. Start recording an out area (Lead-out).

The process proceeds to a step 44, wherein it is determined whether or not a request for ejection of a medium (optical disk) is received from the host computer during recording in the lead-in area and the lead-out area.
When a media ejection request is received, the process proceeds to step 45, where recording is performed up to the boundary of the recording unit of the lead-in area (Lead-in) and the lead-out area (Lead-out), and the recording is interrupted.

That is, information that is difficult to reproduce at a joint between recording units containing information repeatedly recorded in a predetermined lead-in area and lead-out area is not biased to specific information. The recording is temporarily interrupted when the recording of any recording unit is completed based on the recording unit set in.

Then, the process proceeds to step 46, where the recording end position when the recording is temporarily interrupted is set to the medium (optical disk).
The recording is performed at the upper predetermined position (location), and the process proceeds to step 47 to execute a medium ejection process for ejecting the optical disk, and then proceeds to step 28 to end this process.

On the other hand, if the medium discharge request is not received from the host computer in the judgment of step 44, step 4
9 to determine whether the entire area of the lead-in area (Lead-in) and the lead-out area (Lead-out) has been recorded. If the entire area has not been recorded, the flow returns to step 43 to lead-in. The recording of the area (Lead-in) and the lead-out area (Lead-out) is resumed, and the above processing is repeated.

Then, at the judgment of step 49, the lead-in area (Lead-in) and the lead-out area (Lead-in)
-Out), when the entire area is recorded, step 50
Then, the recording process of the lead-in area (Lead-in) and the lead-out area (Lead-out) is completed.

Next, in the above-described control processing, control processing when the optical disk 10 on which the recording end position of the lead-in area and the lead-out area at the time of the interruption of recording is recorded is inserted again will be described.

FIG. 10 is a flow chart showing the control processing according to claim 6 of the present invention. This control process starts at step (indicated by "S" in the figure) 61, proceeds to step 62, where a medium (optical disk) is inserted, and then proceeds to step 63 to read-in the inserted optical disk. It is determined whether the entire area (Lead-in) and lead-out area (Lead-out) have been recorded.

If it is determined in step 63 that the entire lead-in area and lead-out area of the inserted optical disk have not been recorded, the process proceeds to step 64, where a recorded lead-in area (Lead-in) on the optical disk has been recorded. , Information is collected from the recording unit of the lead-out area (Lead-out).

Then, the process proceeds to step 65, where the unrecorded additional information is formed based on the collected information, and the contents of the additional lead-in area (Lead-in) and lead-out area (Lead-out) are recorded. The process proceeds to step 66 to reproduce the recording end position from a predetermined position on the medium (optical disk) to obtain an additional recording position.
Then, the process proceeds to step 68 to perform additional writing in the lead-in area (Lead-in) and lead-out area (Lead-out), and then proceeds to step 68 to end this processing.

If it is determined in step 63 that the entire lead-in area and lead-out area of the inserted optical disk have been recorded, the flow advances to step 68 to end this processing.

[0095]

As described above, according to the optical disk recording / reproducing apparatus of the present invention, the lead-in area and the lead-out area of an optical disk on which data can be overwritten can be recorded in small units, recording interrupted, and recording resumed. The recording or reproduction of packets in another program area can be performed during the recording of the lead-in area and the lead-out area.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an optical disk drive which is an embodiment of an optical disk recording / reproducing apparatus of the present invention.

FIG. 2 is an explanatory diagram showing a format example of a packet which is a unit of information to be recorded on the optical disc 10 shown in FIG.

FIG. 3 is an explanatory diagram showing a concept of a format process for the optical disc 10 shown in FIG.

FIG. 4 is an explanatory diagram showing a concept of a recording unit of a lead-in area of the optical disc 10 shown in FIG.

FIG. 5 is a flowchart showing a control process according to claim 1 of the present invention in the optical disk drive shown in FIG. 1;

FIG. 6 is a flowchart showing a control process according to claim 2 of the present invention in the optical disk drive shown in FIG. 1;

FIG. 7 is a flowchart showing control processing according to claim 3 of the present invention in the optical disk drive shown in FIG. 1;

FIG. 8 is a flowchart showing a control process according to claim 4 of the present invention in the optical disk drive shown in FIG. 1;

FIG. 9 is a flowchart showing a control process according to claim 5 of the present invention in the optical disk drive shown in FIG. 1;

FIG. 10 is a flowchart showing control processing according to claim 6 of the present invention in the optical disk drive shown in FIG. 1;

[Explanation of symbols]

 1: Spindle motor 2: Coarse motion motor 3: Optical pickup 4: Rotation control system 5: Coarse motion motor control system 6: Pickup control system 7: Signal processing system 8: Controller 9: External interface 10: Optical disk 21: Packet 22 : Link block 23: Run-in block 24: User data block 25: Run-out block

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) G11B 27/00 D 27/10 A F term (Reference) 5D044 BC06 CC04 DE22 DE49 DE52 EF05 FG18 GK11 5D066 DA02 DA16 5D077 AA30 CA02 DC40 DD20 EA28 5D090 AA01 BB04 CC01 CC04 DD03 DD05 FF24 FF33 FF49 GG29 GG33 HH01 5D110 AA17 DA01 DA15 DB03 DC05 DC17 DD13 DE02 DE04 DE06

Claims (6)

[Claims] 1. An optical disk recording / reproducing apparatus comprising: recording means for recording a lead-in area and a lead-out area on an optical disk capable of overwriting data; and reproducing means for reproducing data recorded on the optical disk. In the above, the recording process of the lead-in area and the lead-out area is performed in the background, and if a recording or reproduction request of the user data in the program area comes during the processing, the recording processing of the lead-in area and the lead-out area is performed. An optical disc recording / reproducing apparatus, comprising: a control unit for temporarily stopping the recording and reproducing of the user data and resuming the recording process of the lead-in area and the lead-out area after the execution. 2. The optical disc recording / reproducing apparatus according to claim 1, wherein a recording unit including a set of information repeatedly recorded in the lead-in area and the lead-out area is determined, and the recording unit corresponds to a joint between the recording units. When a recording unit is determined so that information that is difficult to reproduce is not biased to specific information, and when temporarily suspending the recording process of the lead-in area and the lead-out area,
During the recording of the recording unit, the recording is interrupted at the end of the recording of an arbitrary recording unit without interruption, and the recording or reproduction of the user data is performed, and after the execution, the next of the lead-in area and the lead-out area is performed. An optical disc recording / reproducing apparatus comprising means for restarting and continuing a recording process from a recording unit. 3. The optical disk recording / reproducing apparatus according to claim 1, wherein if the optical disk is requested to be ejected during the recording process of the lead-in area and the lead-out area, the recording is interrupted during the recording of the recording unit. An optical disc recording / reproducing apparatus, comprising means for interrupting recording at the end of recording of an arbitrary recording unit and ejecting the optical disc without recording. 4. The optical disc recording / reproducing apparatus according to claim 1, wherein the optical disc once ejected during the recording process of the lead-in area and the lead-out area is inserted again.
An optical disc recording / reproducing apparatus, comprising: means for collecting information from recording units in a recorded lead-in area and a recording area in a lead-out area to form additional information; and means for additionally recording an unrecorded recording unit. 5. The optical disk recording / reproducing apparatus according to claim 1, wherein when the optical disk is requested to be ejected during the recording processing of the lead-in area and the lead-out area, the recording is interrupted during the recording of the recording unit. An optical disc recording / reproducing device, wherein recording is interrupted at the end of recording of an arbitrary recording unit without recording, the recording end position is recorded at a predetermined location on the optical disc, and then the optical disc is ejected. apparatus. 6. The optical disk recording / reproducing apparatus according to claim 5, wherein the optical disk once ejected during the recording process of the lead-in area and the lead-out area is inserted again.
Collecting information from the recording units of the already recorded lead-in area and lead-out area to constitute the information to be additionally recorded, and reproduce the recording end position recorded at a predetermined position on the optical disc to obtain the additional recording position, An optical disc recording / reproducing apparatus comprising means for additionally recording an unrecorded recording unit from the additional recording position.