JP2000076829A - Information recording/reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispose of a writing error which is produced during data recording so as not to produce malfunction during data reproduction afterwards. SOLUTION: When a writing error is produced while information is recorded in a session which is the predetermined recording section of a disc 17 and track recording is unsuccessful, if a system controller 11 receives an instruction that session management information (TOC) is to be recorded in the session information management region of the error section from a host computer which is an upper hierarchy device, after the system controller 11 records the session management information (TOC) of the session, the system controller 11 records file management information recorded in a session immediately before the error session into the file information management part of the next new session.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus such as a CD-R drive and a CD-RW drive for recording and reproducing information in a series of data block groups.

[0002]

2. Description of the Related Art An information recording / reproducing device such as a CD-R / RW drive device is one of information recording devices for recording information in a series of data block groups (called "tracks"). Here, a CD-R / RW drive device will be described as an example.

There are several types of disk formats for managing directories and files, including those for CD-ROMs, floppy disk drives (FDDs), and hard disk drives (HDDs).
ISO9, the most common disk format for ROM
The description will be made using the 660 format.

A CD-R / RW drive device is a CD-R / RW drive device.
The RW disc records information such as files and music data in a series of data block group units (tracks). The disc is divided into one or a plurality of recording sections (referred to as "sessions"). (The size of this recording section differs depending on each recording section), and one or more tracks are recorded in the recording section (session).

[0005] The head area of the recording section (session) is a session information management unit called a session management information area (Lead-In area), and the session management information (Table) is included in the session management information area.
Data called Of Contents (TOC) is recorded.

[0006] In an ISO9660 format disk, the number of tracks existing in each session is generally one.

[0007] As shown in FIG.
A file information management unit 50 for managing the locations and attributes of directories and files is recorded at the beginning (predetermined location) of a track in a recording section (session), and thereafter, a descriptor of one or a plurality of files, File body 49 follows.

In a CD-R / RW drive device, when these data are recorded at a stretch by a track-at-once (TrackAt Once) function, when a write error occurs during recording, the track recording is terminated at that time. The session (recording section) was closed by an application command. Closing this session means recording the session information in the TOC area.
To complete the session.

In such a case, although the file information management unit composed of several to several tens of blocks is correctly recorded,
Occasionally, the file itself may be interrupted. For example, when the file information management section is correctly recorded, 100 pieces of file information are recorded therein, but there are only 30 file bodies.

[0010] Such a disk is referred to as Windows 95.
When an arbitrary file is reproduced using an OS such as (registered trademark), there is a problem that the file cannot be reproduced because the main body of the file is not present.

An OS such as Windows 95 is
The last session recorded on the inserted CD is accessed, the file information management section recorded in the session is reproduced, and the directory / file management and reproduction processing recorded on the CD are performed based on the contents. Is carried out.

Conventionally, when a write error occurs, the CD
There has been an information recording apparatus that records dummy data until the track length reaches 300, which is the minimum value of the standard track length, and prevents double writing of a track (for example, see Japanese Patent Application No. 8-303553).

[0013]

However, in the above-described information recording apparatus, when a write error occurs on a disc, a few
When several tens of blocks are recorded, if such a disk is later inserted into the apparatus, there is a problem that the error track may be regarded as a blank track at the time of mounting.

Further, even if the track is filled with dummy data, if the track is the first track of the second session, a problem occurs that the OS such as Windows cannot recognize the file information of the first session.

That is, the OS derives the file information recorded on the disc from the data of the file information management unit recorded in the last session. Since the format (ISO9660 or the like) is not considered, there is a problem that the OS later determines that the disk is a blank disk on which no file is recorded.

The present invention has been made in view of the above points, and when a write error occurs during data recording,
An object of the present invention is to perform an error process so that a trouble does not occur when data is reproduced later.

[0017]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention records and reproduces information such as files on a recording medium capable of recording and reproducing information in units of a series of data blocks. In the information recording / reproducing device,
When a write error occurs during recording of information for a predetermined session of the recording medium and the track recording fails, session information of the session in which the write error has occurred from an externally connected higher-level device. When receiving the command to record the session management information in the management unit, after recording the session management information, the data of the file information management unit recorded in the session immediately before the session in which the write error has occurred is written to the next new session. Is provided with means for copy recording.

Also, in an information recording / reproducing apparatus for recording and reproducing information such as a file in a series of data block groups on a recording medium on which information can be recorded and reproduced, a recording medium capable of recording and erasing information. When a write error occurs during the recording of information for a predetermined session of the medium and the track recording fails, the session information management unit of the session in which the write error has occurred from an externally connected higher-level device. It is preferable to provide a means for erasing the track on which the write error has occurred without recording the session management information when receiving the command for recording the session management information.

Further, in the information recording / reproducing apparatus as described above, when a write error occurs during the recording of information for the first session of the recording medium, the higher-level device sets the session of the session in which the write error occurred. When receiving an instruction to record the session management information in the information management unit, after recording the session management information, special data different from the data to be recorded in the file information management unit is recorded on a track of a predetermined length of the next new session. Means for recording and completing the new session may be provided.

In the information recording / reproducing apparatus as described above, when a write error occurs during recording of information for a session after the music session on the recording medium, the write error occurs from the higher-level device. When receiving a command to record session management information in the session information management unit of the session that has been recorded, after recording the session management information, data to be recorded in the file information management unit on a track of a predetermined length of the next new session and Means for recording different special data and completing the new session may be provided.

Further, in an information recording / reproducing apparatus for recording and reproducing information such as a file in a series of data block groups on a recording medium capable of recording and reproducing information, when the recording medium is inserted, When an error session in which a track is recorded on the recording medium but the track management information for the track is not recorded in the track information management unit is determined, the last address of the track is detected, and the above-mentioned track is detected based on the last address. After recording the track management information in the track information management section and recording the session management information in the session information management section of the session in which the track exists, the data of the file information management section recorded in the session immediately before the error session is written. It is preferable to provide a copy recording means for the next new session.

Furthermore, in an information recording / reproducing apparatus which records and reproduces information such as a file in a series of data block groups on a recording medium on which information can be recorded and reproduced, information can be recorded and erased. When a recording medium is inserted, when an error session in which a track is recorded on the recording medium but no track management information for the track is recorded in the track information management unit is determined, the last address of the track is detected. Means may be provided for erasing an illegal track without recording the track management information based on the final address in the track information management section.

According to the information recording / reproducing apparatus of the first aspect of the present invention, the file information management section recorded in the session immediately before the error session of the recording medium such as a disk is recorded by the recording apparatus. Since the recording is performed in the new session which is the last session existing on the medium, it can be made the same as when the file information management unit of the error session is deleted.
When used in an OS such as Windows 95, files managed by the file information management unit can be correctly reproduced.

The information recording / reproducing apparatus according to the second aspect of the present invention is configured as described above, and the above-described error occurrence occurs in a recording medium such as a CD-RW disc on which information can be recorded and erased. Sometimes, the error session is erased, so that no space is wasted on the unrecorded portion.

According to the information recording / reproducing apparatus of the third aspect of the present invention, the file information management is performed within the last session (a newly added dummy session) recorded on the recording medium. Since the data of the part is not recorded, the OS such as Windows 95 does not erroneously recognize the directory and the file information.
Can be treated the same as a blank disc.

According to the information recording / reproducing apparatus of the fourth aspect of the present invention, since the data of the file information management unit is not recorded in the last session recorded on the recording medium, An OS such as Windows 95 does not erroneously recognize directory and file information. Further, the OS can be handled in the same manner as a recording medium on which only music data is recorded.

In the information recording / reproducing apparatus according to the fifth aspect of the present invention, a session in which an incorrect track exists is completed, and the file information management unit of the session immediately before the error session is set to a new session. Not only allows unauthorized disks to be recorded and played back, but also allows files recorded in the past to be
It can be reproduced from an OS such as ws95.

According to the information recording / reproducing apparatus of the sixth aspect of the present invention, an illegal track can be recorded on a recording medium such as a CD-RW disc on which information can be recorded and erased. Erasing eliminates wasting of unrecorded space.

[0029]

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 a CD-R / RW drive device which is an embodiment of the information recording / reproducing device of the present invention.

This CD-R / RW drive device has a CP
U1, flash ROM 2, host interface controller 3, buffer manager 4, dynamic RAM
5, Subcode operation controller 6, CD-
ROM encoder 7, SRAM 8, CD-ROM decoder 9, audio circuit 10, system controller 1
1, CD encoder 12, CD decoder 13, servo circuit 14, spindle motor controller 15, and SC
Consists of an SI bus 16, a CD-R disk, a CD-RW
Data is recorded and reproduced on and from a disk 17, which is a recording medium such as a disk.

The CPU 1 is a central processing unit (microcomputer) for controlling the operation of the entire CD-R / RW drive. The flash ROM 2 is a CPU
Reference numeral 1 denotes a nonvolatile memory whose contents can be erased and rewritten arbitrarily.

The host interface controller 3
Host computer as host device and this CD-R / R
This is an LSI that controls communication with the W drive device. The buffer manager 4 is an LSI that controls the transfer of transfer data from the host computer and data read from the disk 17.

The dynamic RAM 5 is a buffer memory for temporarily storing transfer data from the host computer and data read from the disk 17. The subcode operation controller 6 is an LSI that generates a subcode to be recorded on the disk 17 and separates the subcode read from the disk 17.

The CD-ROM encoder 7 is a CD-RO encoder.
LSI for modulating M data before writing to disk 17
It is. The SRAM 8 is a memory for storing data such as program variables. The CD-ROM decoder 9 is an LSI for demodulating the read CD-ROM data. The audio circuit 10 includes an LS for controlling music playback.
I.

The system controller 11 controls the disk 1
7, which controls recording and reproduction of data to and from
Various processes related to the present invention are performed. The CD encoder 12 modulates the user data and the subcode so as to conform to the media standard before writing to the disc 17.
I.

The CD decoder 13 is an LSI for demodulating data read from the disk 17 into user data and subcodes. The servo circuit 14
7 is an LSI for controlling servo such as focusing and tracking of a laser beam with respect to the laser beam 7.

The spindle motor controller 15 is an LSI for controlling the rotation of the disk 17. SCSI
The bus 16 is a communication line connecting the CD-R / RW drive device and the host computer, and the two exchange various data via the communication line.

That is, the system controller 11
Means for recording and reproducing information such as files on a recording medium capable of recording and reproducing information in units of a series of data blocks, and recording information for a predetermined session of the recording medium. When a write error occurs during recording and the track recording fails, when an instruction to record session management information in the session information management unit of the session in which the write error has occurred is received from an externally connected higher-level device. After recording the session management information, it functions as a means for copying and recording the data of the file information management section recorded in the session immediately before the session in which the write error has occurred in the next new session.

When a write error occurs during the recording of information for a predetermined session of a recording medium on which information can be recorded and erased and the track recording fails, an externally connected upper layer When a command for recording session management information is received from the device in the session information management unit of the session in which the write error has occurred, a function of means for erasing the track on which the write error has occurred without recording the session management information is also provided. Fulfill.

Further, when a write error occurs during the recording of information for the first session of the recording medium, the higher-level device records the session management information in the session information manager of the session in which the write error has occurred. Upon receiving the command, after recording the session management information, means for recording the special data different from the data to be recorded in the file information management unit on a track of a predetermined length of the next new session and completing the new session Perform the function of

Further, when a write error occurs during the recording of information for a session after the music session on the recording medium, the host device sends a session management to the session information management unit of the session in which the write error has occurred. When a command for recording information is received, after recording the session management information, special data different from the data to be recorded in the file information management unit is recorded on a track of a predetermined length of the next new session, and the new session is recorded. Also functions as a means of completing

Further, when the recording medium is inserted,
When an error session in which a track is recorded on the recording medium but the track management information for the track is not recorded in the track information management unit is determined, the last address of the track is detected, and the above-mentioned track is detected based on the last address. After recording the track management information in the track information management section and recording the session management information in the session information management section of the session in which the track exists, the data of the file information management section recorded in the session immediately before the error session is written. Acts as a means of copying and recording in the next new session.

Further, when a recording medium capable of recording and erasing information is inserted, an error may occur in which a track is recorded on the recording medium but no track management information is recorded in the track information management unit. When the session is determined, the function of a means for detecting the last address of the track and erasing an illegal track without recording the track management information based on the last address in the track information management section is performed.

FIG. 2 is a diagram showing a session format of the disk 17. The CD-R / RW drive device can record and reproduce data on and from the disk 17 having the format shown in FIG.

The disk 17 has a power calibration area (PCA) 20 for performing test writing for determining recording power from the inner periphery, a track information management unit (program memory area: PMA) 21, and a recording section (session).
22 (session No. 1, 2,...).

The size of the session 22 is random and varies depending on the number of tracks in the session 22 and the size of the tracks. The session 22 includes a session information management area (lead-in area: Lea) which is a session information management unit.
d In Area) 23, one or more tracks 24, recording section final area (Lead-out area: Lea)
d Out Area) 25, and the size of both the session information management area and the recording section final area is determined.

The session information management area 23 is an area indicating the beginning of a session, and is an area for recording session management information (TOC) which is track information in the session. The track 24 is an area where the user records data such as files and music. The recording section final area 25 is an area indicating the end of the session. The program area 26 is an area for recording user data.

The size of the session information management area of the first session differs depending on the disc maker, and is about 2 minutes and 30 seconds. Further, the size of the recording section final area of the first session is 1 minute and 30 seconds. The size of the session information management area for the second and subsequent sessions is 1 minute, and the size of the recording section final area is 30 seconds.

In the session information management area, session management information data called TOC is recorded.
The playback device can obtain track information on the inserted disk based on the information.

For example, when a music CD is inserted into an audio CD player (Audio CD Player),
The display shows the total number of tracks and the length of each track in hours.
Since the OC is being reproduced, it can be displayed.

The start of the program area 26 is from the beginning of the track No. 1 of the first session, and the start start address is 0 minute 0 second 0 frame.

FIG. 3 shows the format of a track recorded by the track-at-once method. Tracks recorded on a CD-R / RW disc have a pre-gap (Pre-Gap).
Gap) 30, user data (User Data) 3
Run out block (Run Out block)
Block 32). Pre-gap 3
0 is a link block of one block (Link Blo
ck) 33,4 run-in blocks (Run
In Block) 34 and the like.

The pre-gap 30 (150 blocks, 22
(5 blocks) is located at the head of the track, and is a silent section in terms of music. The user data section 31 is where data transferred from the user (host computer) is recorded. The run-out block (two blocks) 32
This is the block that indicates the end of the track.

The link block 33 (one block) is a block indicating a connection between tracks. The run-in block (four blocks) 34 is a block indicating the head of the track.

This CD-R / RW drive uses the ISO9660 standard as a file format.
FIG. 4 is an ISO9660 file format diagram.

Explanation of terms of ISO9660 format (1) Volume space
e) Each session on the 40 CD is largely divided into two areas, a system area 41 and a data area 42.

(2) System area (System A)
(rea) 41 The system area includes 16 blocks (LBN0-15) from the beginning of the first track of each session.
The content is not defined in this standard.

(3) Data Area (Data Area)
a) 42 Remaining part of volume space. It consists of the following data.・ Primary volume descriptor 43 (Prim
ary Volume Descriptor • Supplementary volume descriptor 44 (Su
pplementary Volume descri
ptor) Terminator 45 Path table 46 Directory descriptor 47 Director
y Descriptor ・ File Descriptor (File Descriptor)
tor) 48 • File (File) main unit 49 This area includes a file information management unit 50 and a file main unit 49.

(4) Primary Volume Descriptor 43 This is called PVD, and is located at LBN16. Windows
The OS such as s always accesses here. The size of the volume space, the size and position of the path table 46, the root directory information, the date of the volume, and the like are described.

(5) Supplementary Volume Descriptor 44 SVD, if present, is immediately after PVD. When using in a Japanese environment or using Unicode (Uni
When Code is used, the OS refers to this.

(6) Terminator 45 Indicates the end of PVD and SVD. Usually, PVD,
It is recorded on the disk in the order of SVD and terminator.

(7) Path Table 46 The names of the directory descriptor 47 and the file descriptor 48 and the recording position are described.

(8) Directory Descriptor 47 The position where the main body of the directory is recorded, its name and attributes are described.

(9) File Descriptor 48 The position where the main body of the file is recorded in the file main body 49, its name and attributes are described.

(10) File body section 49 The actual substance such as a word profile and an execution file is recorded.

Each session of the disk 17 has a volume space 40, and a system area 41 and a data area 42. The data area 42 includes a file information management unit 50, a subsequent path table 46, a directory descriptor 47 and a file descriptor 48, and a file body unit 49 including one or more files. The management unit 50 includes a primary volume descriptor (PVD) 43, a supplement volume descriptor (SVD) 44, and a terminator 45 from the top.

PVD 43, SVD 44, terminator 4
5 is composed of at least one sector, and each sector has an ID indicating the sector at the beginning. PVD 43 is "0
1 ", SVD 44 is" 02 ", and terminator 45 is" F ".
F ".

The OS such as Windows 95 reproduces the seventeenth (LBN = 16) sector from the beginning of the first track of the last session on the disc and performs PVD.
Look at the contents of 43.

In a Japanese environment, the SVD 44 is reproduced, and the next logical address is reproduced until a terminator block is detected. The SVD 44 contains a root directory descriptor (Root Directory).
The position where the Descriptor is located is recorded. By reproducing this position, the names of the directories or files under the root directory and the addresses where the descriptors are located can be found.

Further, if the descriptor of the directory under the root directory is reproduced, the name of the directory and the name of the file under the root directory and the location of the descriptor corresponding to them can be known. In this way, you can check the directories, files and contents under the root directory, and reach the file itself.

In a multi-session CD,
In general, there are a plurality of sessions, and a file information management unit corresponding to the number of sessions is generally present. Such a disc is created when a user wants to add a file to be saved.

For example, suppose that the chart for the month '97 .10 was written in the first session. If one month has passed and data for November is to be recorded on the disc, it is recorded in the second session. In this case, the file information management unit 50 recorded in the first session needs to be copied to the file information management unit 50 in the second session so that the data of October can be viewed from the OS. The writer software performs such an operation and inherits the data of the file information management unit 50 recorded in the past.

Next, the processing according to claim 1 of the present invention in the CD-R / RW drive device will be described.

This CD-R / RW drive uses a disk 17 on which information can be recorded and reproduced, and records and reproduces information such as files on the disk 17 in a track unit, which is a series of data blocks. Is performed.

When a write error occurs while recording information for a session which is a predetermined recording section of the disk 17 and the track recording fails, the session information management area of the error session is stored in the session information management area of the error session. When a command to record the management information (TOC) is received from the host computer of the host device, after recording the session management information (TOC) of the session, the command is recorded in the session immediately before the error session for the next new session. The file management information is recorded in the file information management unit. The file information management unit is an information management unit that manages locations and attributes of recorded files and directories as a disk format.

FIG. 5 is a flowchart showing the processing according to claim 1. “S” in the figure indicates a step. In this process, it is determined in step 1 whether or not there is a track on which a write error has occurred. If there is, the process proceeds to step 2 to record the TOC of the error session, and proceeds to step 3 to read out the error session (Lead). -Out) area is recorded, and the process proceeds to step 4 to determine whether or not the data is ISO9660 format data. If the data is ISO9660 format data, the process proceeds to step 5 to execute a recovery session recording process, and this process ends.

If there is no track in which a write error has occurred in step 1, the process proceeds to step 6 to record the TOC of the current session, and proceeds to step 7 to record the lead-out (Lead-Out) area of the current session. , And this process ends. In addition, according to the determination in step 4, the ISO 9
If the data is not 660 format data, the process ends.

FIG. 6 is a flowchart showing the recovery session recording process of FIG. In the recover session recording process, the start address of the first track of the previous session is obtained in step 11, the address of the file information management unit is set in step 12, the file management information is read in step 13, and Proceeding to step 14, it is determined whether the previous session is ISO9660 format data.

If it is determined in step 14 that the data is ISO 9660 format data, the flow advances to step 15 to execute a recovery track recording process, and the flow advances to step 16 to record the TOC of the recovery session. Lead-Ou
t) Record the area and end this processing. On the other hand, if the data is not ISO9660 format data in the determination of step 14, the process is terminated.

Next, the processing according to claim 1 of the present invention will be further described. This session recording process is executed by a command (Close S) for closing the session from the host computer.
This is executed when an “session command” is received. The command to close the session is a command to record data in the session management information (TOC) and the lead-out (Lead-Out) area to complete the session.

When the system controller 11 first records a track in the target session on the disk 17, the system controller 11 causes an interface (I / F) error such as a servo error such as off-track or a buffer underrun (Buffer Under run). It is checked whether a write error has occurred (S1).

If a write error has occurred, session management information is recorded in the TOC area of the error session (S2), and a lead-out (Lead-Out) area representing the end of the session is recorded (S3). ),
It is checked whether the error track is ISO9660 format data (S4).

This checking means determines that each ID (the first byte of the sector) of PVD, SVD, and terminator (Terminator) is “01”, “02”, and “FF”, respectively. This is performed by confirming that the identifier (the second byte to the sixth byte) is “CD001”.

Further, if it is determined that the data is ISO9660 format data, the recovery session recording process (S
Perform 5) and end.

The recovering session recording process is a process of copying and recording the file information management section which has been correctly recorded immediately before the error session with respect to the session next to the error session with respect to the next new session.

Next, the file information management unit to be recorded at the time of recovery includes the PVD, SVD, and terminator (Termi).
n.).

When the PVD and SVD are reproduced, a root directory descriptor (Root Direct Descriptor) is obtained.
Ory Descriptor) address,
From there you can reach the file itself.

Determination of Whether a Write Error Occurs (S1)
When a write error has not occurred in the session, the session management information is recorded in the TOC area of the current session (S
6), a lead-out (Lead-Out) area is recorded (S7), and the session completion processing ends.

When it is determined whether or not the data is ISO9660 format data (S4), the error track is recorded in the error track.
When it is determined that the 60 format data is not recorded, the process ends with the error session being completed.

Next, in the recovery session recording processing, first, the start address of the first track of the session immediately before the error session is read from the TOC information stored in the DRAM 5 inside the CD-R / RW drive (S11). ), An address obtained by adding 10h (16 sectors) to the address is set as the PVD address (S1).
2) Continuous reproduction is performed until a terminator can be confirmed (S13).

Here, the terminator (Ter) is converted from PVD.
If the information up to (minor) cannot be obtained, the data is not determined to be ISO9660 format data.

If the previous session is determined to be ISO9660 format data in the determination of ISO9660 format data (S14), recording processing of a recovery track is performed (S15).

In this process, the track length is set to 300 sectors which is the minimum of the CD standard, and the ISO 966 is added to the user data portion.
Record from the PVD of the normal session (the session immediately before the error session) to the terminator (Terminator) so as to match the 0 format.

After that, the session information management data of the session is recorded in the TOC area of the session (S
16), a lead-out (Lead-Out) area is recorded, and the process is terminated. If the session immediately before the error session cannot be determined to be the ISO9660 format data in the determination of the ISO9660 format data (S14), the process ends.

Thus, for example, the disk format accompanying the error session as shown in FIG. 7 becomes the disk format shown in FIG. 8 by the above-described processing.

FIG. 7 shows a disk format in the case where a write error occurs during recording of a track in the second session and an error sector occurs. like,
By creating a recovery session in which only the file information management unit of the first session is copied in the third session, the file information can be correctly recognized from the OS at the time of subsequent reproduction.

Thus, the file information management unit recorded in the session immediately before the error session is
Since the information is recorded in a new session which is the last session existing on the disc, the same as when the file information management unit of the error session is deleted, the file information is used when the disc is used in an OS system such as Windows 95. The file managed by the management unit can be correctly reproduced.

Next, in the above-described processing according to claim 1 of the present invention, for example, a file information management unit of a session immediately before an error session is added to a new session on a recording medium such as a CD-R disc which can be recorded only once. Is effective, but the information can be rewritten many times.
A recording medium such as a D-RW disc wastes recording space.

Then, in order to solve such a problem, a process according to claim 2 of the present invention in the CD-R / RW drive device will be described below.

In this process, a write error occurs on the disk 17 on which information can be recorded and erased while information is being recorded for a predetermined recording section (session), and the track is not recorded. When it fails, the session management information (T
When the command for recording the OC is received from the host computer, the session management information (TOC) is not recorded,
The track in which the error has occurred is erased, and this process ends.

FIG. 9 is a flowchart showing the processing according to claim 2 of the present invention. This session recording process for each disc
In step 21, it is determined whether or not there is a track on which a write error has occurred. If so, the process proceeds to step 22 to determine whether or not the error disk is a CD-RW disk.
If the disc is an RW disc, the process proceeds to step 27 to execute an error track erasure process, and the process ends.

If it is determined in step 22 that the error disk is not a CD-RW disk, the flow advances to step 23 to record the TOC of the error session.
To the error session readout (Lead-
Out) area is recorded, and the routine proceeds to step 25, where
It is determined whether or not the data is 660 format data.
If it is 60 format data, the process proceeds to step 26, where the recovery session recording process shown in FIG. 6 is executed, and this process ends.

If there is no track on which a write error has occurred in step 21, the process proceeds to step 28 to record the TOC of the current session, and proceeds to step 29 to record the lead-out (Lead-Out) area of the current session. , And this process ends. If it is determined in step 25 that the data is not ISO9660 format data, the process ends.

Next, the processing according to claim 2 of the present invention will be further described. This process is performed on the inserted disk 17.
Is a CD-R disc or a CD-RW disc,
If it is determined that the disc is a CD-RW disc, the process ends without executing the recovery session recording process.

This disc-by-disk session recording process also uses a command (Close) to close the session from the host computer.
This is executed when (se Session Command) is received.

The system controller 11 controls the disk 1
When the track in the session No. 7 ends with a write error (S21), the type of the inserted disk 17 is confirmed (S22). If it is determined that the disc is a CD-RW disc, an erasure pattern is recorded in the error track area, and the error track is erased (S2).
3) Terminate the session completion processing.

When it is determined whether the disk 17 is a CD-RW disk (S22), the inserted disk 17
If it is determined that the disc is a DR disc, the session management information is recorded in the TOC area of the error session (S23),
Lead-out that represents the end of the session (Lead-
(Out) area is recorded (S24), and the error track is
It is confirmed whether the data is SO9660 format data (S25).

This confirmation means is performed in the same manner as described above. If it is determined that the data is ISO9660 format data, the recovery session recording process (S
26) is performed and the processing ends.

Thus, the CD-RW from which information can be erased
A disk such as a disk can be changed to the disk format shown in FIG. 10 without using the disk format shown in FIG.

Therefore, by setting the disk format as shown in FIG.
The error session recorded in the session will be cleared,
Only the first session exists on the disk 17 and the CD-
The file information can be correctly recognized from the OS even on the RW disk.

In this manner, by erasing the error session for a disc such as a CD-RW disc on which information can be recorded and erased, it is possible to avoid wasting unrecorded space.

Next, in the above-described processing according to claim 1 of the present invention, if the error session is the first session on the disk, there is no session immediately before the error session, so that the next new session The file information management unit cannot be recorded, and directory / file information is erroneously recognized on the OS.

Then, in order to solve such a problem, a process according to claim 3 of the present invention in the CD-R / RW drive device will be described below.

This processing is performed when an error occurs during recording of information for the first session, and the session management information (T
When the command for recording the OC) is received from the host computer, the session management information (TOC) of the error session is recorded, and then the file information management unit data differs from the file information management unit data in a track of a predetermined length for the next new session. Record special data to complete a new session.

FIG. 11 is a flowchart showing the processing according to claim 3 of the present invention. In the first dummy session recording process, it is determined in step 31 whether or not there is a track in which a write error has occurred. If so, the process proceeds to step 32 to record the TOC of the error session, and then proceeds to step 33. Readout of Error Session (Lead-Ou
t) Record the area and proceed to step 39 to determine whether the error session is the first session.

If it is determined in step 39 that the error session is the first session, the flow advances to step 34 to set dummy data, and the flow advances to step 35, where track length = 30.
Set to 0 sector, proceed to step 36 to record a dummy track, proceed to step 37 to record the TOC area of the dummy session, and proceed to step 38 to record the lead-out (Lead-Out) area of the dummy session. , And this process ends.

If it is determined in step 39 that the error session is not the first session, the process proceeds to step 40 where IS
Determine whether the data is O9660 format data, and
If it is not O9660 format data, this process is terminated as it is. If it is ISO9660 format data, the process proceeds to step 41, where a new session recording process is executed, and this process ends.

If it is determined in step 31 that there is no track on which a write error has occurred, the process proceeds to step 42 to record the TOC of the current session, and proceeds to step 43 to record the lead-out (Lead-Out) area of the current session. , And this process ends.

Next, the processing according to claim 3 of the present invention will be further described. In the first dummy session recording process, when a close session command is received from the host computer, it is determined whether the session to which the track in which the write error occurred belongs is the first session on the disc, If the first session, ISO9 after that session
Instead of recording the 660 format file information management unit data, "00" data is recorded on the track as dummy data to create a dummy session.

By this process, the OS such as Windows 95 can determine that the inserted disk is a disk equivalent to a blank disk, and can add data to the remaining recording space on the disk. .

The system controller 11 issues a command (Close S) to close the session from the host computer.
When receiving a (session command), if there is a track in which a write error has occurred (S31),
The TOC area of the session is recorded (S32), and the lead-out (Lead-Out) area is recorded (S3).
3). Thereafter, it is determined whether or not the session is the first session on the disc (S39).

If it is determined in the above confirmation that the session is the first session, dummy data consisting of "00" data is stored in the DRAM 5 (S34), and the track length is set to 300 sectors which is the minimum value of the CD-RW disc standard (S34). S35),
A dummy data track is recorded (S36).

Thereafter, the TOC area of the dummy session is recorded (S37), and the lead-out (Lead-Out) is performed.
The area is recorded (S38), and the dummy session recording process ends. If the error session is not the first session in S39, the same processing S40 to S43 as in FIG.
Perform

As described above, since the dummy data is recorded in the second session and the session is closed as in the disc format shown in FIG. 12, the OS may determine that the file information management unit is not recorded in the last session. Yes, and can be treated the same as a blank disc.

As described above, since the file information management unit data is not recorded in the last session (a newly added dummy session) recorded on the disc,
An OS such as Windows 95 does not erroneously recognize directory / file information. Also, the OS can be treated in the same way as a blank disk.

Next, in the above-described processing according to claim 1 of the present invention, if the session immediately before the error session is a music session, there is no file information management unit in the session. The file information management unit cannot be recorded for a new session immediately after, and directory / file information is erroneously recognized on an OS such as Windows 95 (registered trademark).

Then, in order to solve such a problem, a process according to claim 4 of the present invention in the CD-R / RW drive device will be described below.

In this process, if an error occurs during recording of information for a session after the music session (audio session) on the disc, the session management information (TOC) of the error session is stored in the session information management unit of the error session. ) Is received from the host computer, and after recording the session management information (TOC) of the error session, a special track different from the file information management unit data in a track of a predetermined length for the next new session is recorded. Record data and complete the session.

FIG. 13 is a flowchart showing the processing according to claim 4 of the present invention. In the second dummy session recording process, the address of the first (1st) track of the previous session is obtained in step 51, the process proceeds to step 52, the address of the file information management unit is set, and the process proceeds to step 53 to perform file management. The information is read, and the flow advances to step 54 to determine whether or not the previous session is ISO9660 format data.

In the judgment of step 54, the previous session is IS
If the data is O9660 format data, the flow advances to step 55 to execute a recovery track recording process, and
Go to step 57 to record the TOC of the recovery session, and go to step 57 to read out the recovery session (L
(head-Out) area is recorded, and this process ends.

The previous session is determined to be IS in step 54
If it is not O9660 format data, step 5
Proceeding to step 8, it is determined whether or not the previous session is an audio session.
Go to step 60 to set dummy data, go to step 60, set track length = 300 sectors, and go to step 61
Go to step 62 to record a dummy track, go to step 62 to record the TOC area of the dummy session, and go to step 6
3 and lead out dummy session (Lead
-Out) area is recorded, and this process ends. Also,
If it is determined in step 58 that the previous session is not ISO9660 format data, this process is terminated.

Next, the processing according to claim 4 of the present invention will be further described. In the second dummy session recording process, at the time of the recover session recording process, it is checked whether or not the session immediately before the error session is an audio session. If the session is an audio session, the dummy session is recorded after the error session.

For example, a CD called CD-Extra exists in the world. In this CD, the first session is an audio session (music session), the second session is a data session, and normal music (Audio) is played on an audio player (Audio Player).
o) Playback is possible, and music can be played back while playing back images on a personal computer. Of course, image data is recorded in the second session.

[0134] Such a CD-Extra is converted to a CD-R /
Although it can be created using an RW drive device, if a write error occurs in the second session, problems such as the inability to correctly reproduce images on an OS such as Windows 95 due to the above-described causes may occur. is there.

In order to avoid this problem, the second
It is necessary to record a dummy session after a session so that image data can be recorded correctly. The dummy session is the last session, and “00” data is recorded on the track of the session.
Since the file information management unit is not recorded, the OS does not need to refer to incorrect information.

This second dummy session recording process
It is an improvement of the recovery session recording process of FIG. The system controller 11 first plays back the file information management unit of the previous session in a manner similar to the recovery session recording process of FIG. 6 (S51 to S53), and then checks whether the session is an ISO9660 format disk (S54). ).

If it is determined that the disc is not an ISO9660 format disc, it is confirmed whether or not the disc is an audio session (S58). If the audio session is determined in the confirmation (S58), dummy data consisting of "00" data is set in the DRAM 5 of the CD-R / RW drive (S59), and the length of the dummy track is set to the minimum value of the CD standard. Is set to 300 sectors (S6
0), a dummy track is recorded (S61).

Then, as a process for completing the dummy session, the TOC area of the dummy session is recorded (S
62), a lead-out (Lead-Out) area is recorded (S63), and this processing ends.

If it is determined that the previous session is neither the ISO9660 format data nor the audio data in the determination as to whether the audio session is an audio session (S58), the process is terminated.

Further, it is determined whether or not the data is ISO9660 format data (S54).
If the data is determined to be 660 format data, a recovery session recording process is performed in the same manner as the process shown in FIG. 6 (S55 to S57), and this process ends.

As described above, since the dummy session is recorded after the error session as in the disk format shown in FIG. 14, the OS can determine that the disk is equivalent to the disk on which the audio data is recorded, and Audio) Reproduction can be performed accurately.

As described above, since the file information management data is not recorded in the last session recorded on the disk, the OS such as Windows 95 does not erroneously recognize the directory / file information. Also, the OS can be handled in the same manner as a disc on which only music data is recorded.

Next, if the power of the CD-R / RW drive device is shut down due to a power failure or the like while recording the track, the track is interrupted halfway and the track information management unit (PMA ) Is not recorded, and a disc with an incomplete session is created.

As described above, if there is a disc on which a track has been recorded but no track information management unit (PMA) exists for that track, when the disc is inserted into a CD-R / RW drive device, -R
The / RW drive device determines that the disk is an illegal disk, and cannot perform recording or reproduction. Therefore, it is impossible to reproduce a file in a previously recorded session, and data recorded in the past is apparently lost. .

Therefore, in order to solve such a problem, it is preferable to execute the processing according to claim 5 of the present invention in the CD-R / RW drive device.

In this processing, when it is determined that a track is recorded on the inserted disk but there is no track information management unit (PMA) for the track, the last address of the track is detected, and After recording the information management unit (PMA) and recording the session management information (TOC) for the session in which the track exists, the file information management recorded in the session immediately before the error session for the next new session Copy and record the copy data.

Further, for example, a CD which can be recorded only once
Means for completing a session in which an incorrect track exists on a disc such as an R disc and recording the file information management unit of the session immediately before the error session in a new session is effective, but the information is repeatedly recorded. Discs such as rewritable CD-RW discs waste recording space.

Therefore, in order to solve such a problem, the processing according to claim 6 of the present invention may be executed in the CD-R / RW drive device.

This process detects the last address of a track without a track information management unit (PMA) for a disk on which information can be recorded and erased, and without recording the track information management unit (PMA). Erase bad tracks.

FIG. 15 is a flowchart showing the processing according to claims 5 and 6. This disc information acquisition process is a mounting process when a disc is inserted into a CD-R / RW drive device, and is a process that takes into account when a track whose track information is not recorded in the PMA is detected.

Such a track occurs because the power supply was cut off during the data write processing and the TOC area could not be recorded. Therefore, when the track is detected at the time of mounting, the track is recovered, the session is completed, and the next recovery session may be recorded.

This disk information acquisition processing is performed in step 7
It is determined in step 1 whether or not the disc is a stamp disc. If the disc is not a stamp disc, the process proceeds to step 72 to reproduce the TOC, and proceeds to step 73 to reproduce the PMA.
The process proceeds to step 4 to reproduce the program area, and proceeds to step 75 to determine whether or not there is a track not in the PMA.

If it is determined in step 75 that there is no track that is not in the PMA, the process is terminated. If there is a track that is not in the PMA, the flow advances to step 76 to detect the last address of the track, and the flow advances to step 77. Willing CD
It is determined whether or not the disc is a RW disc. If the disc is a CD-RW disc, the process proceeds to step 78, where an unauthorized track erasing process is executed, and this process ends.

If the disc is not a CD-RW disc in the judgment in step 77, the flow advances to step 80 to record the PMA, and the flow advances to step 81 to record the TOC of the unauthorized session.
Proceeding to step 82, a lead-out (Lead-Out) area of the illegal session is recorded, and proceeding to step 83, it is determined whether or not the data of the illegal track is ISO9660 format data.

If it is determined in step 83 that the data of the illegal track is not the ISO9660 format data, the process is terminated as it is, and the data of the illegal track is
If the data is O9660 format data, the recovery session recording process shown in FIG. 6 in step 84 is executed, and this process ends. If the stamp disc is determined in step 71, the process proceeds to step 79 to reproduce the TOC,
This processing ends.

Next, the processing according to claims 5 and 6 will be further described. First, the system controller 11 checks whether the inserted disk is a stamp disk (S71).

This is to determine whether the preformatted ATIP of the CD-R / RW disc on the disc can be detected. If it is determined that the disc is a stamp disc (S71), the TOC of the first session is reproduced, and if the disc is a multi-session, the TOC of each session is reproduced, and if the disc is a multi-session, session information is obtained. (S79).

That is, since there is no PMA on the stamp disk, the track information is obtained by TOC reproduction, and the mounting process ends.

Determination as to whether the disk is a stamp disk (S71)
If the disc is not a stamp disc,
As the R / RW disc, the TOC reproduction is executed by using the same process as the stamp disc (S72).

After that, the P-specific information of the CD-R / RW disc
The MA is reproduced (S73), and the mode, start address, end address and the like of each track are confirmed.

Next, the outside of the last address of the last track recorded in the PMA is reproduced (program area reproduction) (S74), and it is confirmed whether there is a track not recorded in the PMA (S75).

If it is determined in step S75 that there is a track not present in the PMA, that there is an illegal track, the extent to which the track has been recorded is detected by detecting a reproduction signal (S76). Then, the last address at which the reproduction signal can be detected is set as the end address of the track (S76).

Next, if the inserted disc is a CD-R
It is determined whether or not the disc is a W disc (S77). If the disc is a CD-RW disc, the illegal track is deleted (S78).
This processing ends. If it is determined in step S75 whether a track not recorded in the PMA is present in the program area, the disc is determined to be a normal disk, and the disc information mounting process is terminated.

Judgment as to whether or not the disc is a CD-RW disc (S7)
If it is determined in step 7) that the inserted disc is a CD-R disc, track information such as address information of an illegal track is recorded in the PMA (S80), and the TOC area of the session to which the track belongs is recorded. (S8
1) The lead-out (Lead-Out) area is recorded (S82), and the data recorded on the illegal track is I
Check whether the data is SO9660 format data (S
83).

This checking means is based on the LBN 16
(Logical address 16) Reproduce continuously from address, PVD, SVD, terminator (Terminat
If the identifier of (or) is detected, it is determined that the data is ISO9660 format data.

When it is determined whether or not the data on the illegal track is ISO9660 format data (S83), the ISO 9
If it is determined that the data is 660 format data, a recover session recording process (S84) for copying and recording the file information management unit of the session immediately before the unauthorized session is executed in the next session, and this process ends.

In addition, the data of the illegal track is ISO96
If the data of the illegal track is not ISO9660 data in the determination of whether or not the data is the 60 format data (S83),
This mounting process is immediately terminated.

In this way, the session in which an illegal track exists is completed, and the file information management unit of the session immediately before the error session is recorded in the new session. A file recorded in the past can be reproduced from an OS such as Windows 95.

A CD-ROM capable of recording and erasing information is
By erasing illegal tracks on a disc such as a RW disc, it is possible to avoid wasting unrecorded space.

[0170]

As described above, according to the information recording / reproducing apparatus of the present invention, when a write error occurs during data recording, error processing can be performed so as not to cause a problem during subsequent data reproduction. it can.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a CD-R / RW drive device that is an embodiment of an information recording / reproducing device according to the present invention.

FIG. 2 is a diagram showing a session format of a disk 17 shown in FIG.

FIG. 3 shows a format of a track recorded by a track-at-once method.

FIG. 4 is an ISO9660 file format diagram.

FIG. 5 is a flowchart showing processing according to claim 1 of the present invention in the CD-R / RW drive device shown in FIG. 1;

FIG. 6 is a flowchart showing a recover session recording process of FIG. 5;

FIG. 7 is a diagram showing an example of a disk format of an error session.

8 is a diagram showing an example of a disk format of a disk that has been subjected to the processing shown in FIG. 5;

FIG. 9 is a flowchart showing processing according to claim 2 of the present invention in the CD-R / RW drive device shown in FIG.

FIG. 10 is a diagram showing an example of a disk format of a disk that has been subjected to the processing shown in FIG. 9;

FIG. 11 is a flowchart showing processing according to claim 3 of the present invention in the CD-R / RW drive device shown in FIG. 1;

12 is a diagram showing an example of a disk format of a disk that has been subjected to the processing shown in FIG. 11;

FIG. 13 is a flowchart showing processing according to claim 4 of the present invention in the CD-R / RW drive device shown in FIG. 1;

FIG. 14 is a diagram showing an example of a disk format of a disk on which the processing shown in FIG. 13 has been performed.

FIG. 15 is a flowchart showing processing according to claims 5 and 6 of the present invention in the CD-R / RW drive device shown in FIG.

[Explanation of symbols]

 1: CPU 2: Flash ROM 3: Host interface controller 4: Buffer manager 5: Dynamic RAM 6: Subcode operation controller 7: CD-ROM encoder 8: SRAM 9: CD-ROM decoder 10: Audio circuit 11: System controller 12 : CD encoder 13: CD decoder 14: Servo circuit 15: Spindle motor controller 16: SCSI bus 17: Disk 20: Power calibration area (PCA) 21: Track information management unit (PMA) 22: Recording section (session) 23: Session information management area (lead-in area) 24: track 25: recording section final area (lead-out area) 26: program area 30: pre-gap 31: user data section 32: Run-out block 33: Link block 34: Run-in block

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G11B 20/18 572 G11B 20/18 572F

Claims (6)

[Claims] An information recording / reproducing apparatus for recording / reproducing information such as a file in units of a series of data blocks on a recording medium capable of recording / reproducing information. When a write error occurs during the recording of information and the track recording fails, the externally connected host device records the session management information in the session information management unit of the session in which the write error has occurred. When receiving the command, after recording the session management information, a means for copying and recording the data of the file information management unit recorded in the session immediately before the session in which the write error has occurred in the next new session is provided. An information recording / reproducing apparatus characterized by the above-mentioned. 2. An information recording / reproducing apparatus for recording / reproducing information such as a file in units of a series of data blocks on a recording medium capable of recording / reproducing information. When a write error occurs while recording information for a predetermined session of the medium and the track recording fails, a session information management unit for the session in which the write error has occurred from an externally connected higher-level device. An information recording / reproducing apparatus, further comprising: means for erasing a track on which the write error has occurred without recording the session management information when receiving a command for recording the session management information. 3. The information recording / reproducing apparatus according to claim 1, wherein, when a write error occurs during recording of information on the first session of the recording medium, the host device performs a write operation on the session in which the write error has occurred. When receiving an instruction to record session management information in the session information management unit, after recording the session management information, special data different from data to be recorded in the file information management unit on a track of a predetermined length of the next new session. An information recording / reproducing apparatus characterized by comprising means for recording a new session and completing the new session. 4. The information recording / reproducing apparatus according to claim 1, wherein when a write error occurs during recording of information for a session after the music session on the recording medium, the write error is transmitted from the higher-level device. When receiving a command to record session management information in the session information management unit of the generated session, after recording the session management information, data to be recorded in the file information management unit on a track of a predetermined length of the next new session An information recording / reproducing apparatus provided with means for recording special data different from the above and completing the new session. 5. An information recording / reproducing apparatus which records and reproduces information such as a file in a series of data block groups on a recording medium on which information can be recorded and reproduced, wherein when the recording medium is inserted, When an error session in which a track is recorded on the recording medium but the track management information for the track is not recorded in the track information management unit is determined, the last address of the track is detected, and the track is detected based on the last address. After recording the track management information in the track information management unit and recording the session management information in the session information management unit of the session in which the track exists, the data of the file information management unit recorded in the session immediately before the error session is deleted. Information characterized by providing means for copying and recording in the next new session Recording and reproducing apparatus. 6. An information recording / reproducing apparatus for recording / reproducing information such as a file in a series of data block groups on a recording medium capable of recording / reproducing information, the recording capable of recording / erasing information. When a medium is inserted, when an error session in which a track is recorded on the recording medium but the track management information for the track is not recorded in the track information management unit is determined, a final address of the track is detected, An information recording / reproducing apparatus comprising means for erasing an illegal track without recording the track management information based on the final address in the track information management section.