JP3486486B2 - CD-R drive device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CD-R drive device for recording / reproducing data in / from a program area of a CD-R disc.

[0002]

2. Description of the Related Art A CD-R drive device is a device for recording various data in a track format in a user data area called a program area on a CD-R disc (write-once CD) and reproducing the recorded data. is there. In such a CD-R drive device, at the end of data recording on a track, or before data recording on a track, track address information such as start time and stop time of the track is recorded on the inner circumference side of the disc. The data is written in the enlarged recording area (hereinafter referred to as "PMA area").

This CD-R drive device, when an arbitrary CD-R disc is inserted, drives the CD-R disc.
By mounting (collecting) the address information of the tracks existing in the PMA area of the disc, the address information of all the tracks on the disc is grasped, and additional recording and reproduction to the tracks are prepared based on the address information ( See, for example, JP-A-2-301073).

There is also a standard for recording address information of one track in units of 5 sectors or 10 sectors in the PMA area of a CD-R disk used in such a CD-R drive device.

In the conventional CD-R drive device, when a reproduction error occurs in the PMA area and the address information of an arbitrary track cannot be reproduced during the mounting process of the address information of the track when the disc is inserted, the error sector is recorded. The PMA area regeneration process is terminated at the time of detection. Since the address information of all the tracks existing on the disc cannot be obtained, reproduction and recording of the tracks on the disc are prohibited and the disc is unusable.

[0006]

However, in the above-described CD-R drive device, since the PMA area cannot be reproduced, it becomes impossible to record data on the disc and reproduce the data recorded on the disc. However, there is a problem that valuable data cannot be used or the memory area of the disk medium cannot be effectively used.

The present invention has been made in view of the above points, and an object thereof is to enable data recording and reproduction even if a reproduction error occurs in the PMA area of a CD-R disc.

[0008]

In order to achieve the above object, the present invention provides a CD-R drive device equipped with data recording / reproducing means for recording and reproducing data in and from a program area of a CD-R disc. when the address information mounting process of a track of the power-on or the program area after CD-R disc is inserted, the determines whether or not reproducing address information of the tracks recorded in the PMA area of the CD-R disc One judge
It was judged that it was possible to reproduce by Dan and the first judging means.
Of the track recorded in the PMA area.
Comparing the data of the address information in the TOC recorded in the lead-in area of the CD-R disc corresponding to the data and the address information of the address information, and means for inhibiting additionally recorded in accordance with the comparison result , The first judgment above
When it is determined by the means that the address information of the track recorded in the PMA area could not be reproduced due to a reproduction error, the T corresponding to the address information is reproduced.
First address information generating means for generating the address information that could not be reproduced based on the address information in the OC is provided.

Whether or not the TOC information is recorded in the CD-R drive device as described above
The second determination means for determining whether the power-on or CD-R
During the mounting process of the address information of the track in the program area after the disk is inserted, the address information of the track recorded in the PMA area of the CD-R disk is read by the first determining means due to a reproduction error. It is judged that the data cannot be reproduced , and the second judgment means described above
When the TOC information is determined not to be recorded, the second address generating address information which can not be said reproduced based on the address information recorded before and after the address information could not be the re <br/> raw Information generation means may be provided.

Further, when the address information of two or more continuous tracks cannot be reproduced due to the reproduction error, a means for prohibiting reproduction of the track of the address information which cannot be reproduced, and a means for warning the prohibition of reproduction by the means. Should be provided.

[0011]

[0012]

Further, the first address information generating means for generating the address information which could not be reproduced is provided with the address information which cannot be reproduced when the reproduction error is a data error which cannot be corrected due to many data errors. It is good to use a means to generate.

[0014]

[0015]

[0016]

[0017]

[0018]

[0019]

[0020]

[0021]

[0022]

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a write-once type information recording / reproducing apparatus (referred to as "CD-R drive apparatus") which is an optical disk apparatus according to an embodiment of the present invention. This CD-R drive device is CP
U (USER MICRO CONTROLLER) 1, Flash ROM (F
LASH ROM) 2, Host interface controller (H
OST I / F CONTROLLER) 3.

Further, the buffer manager (BUFFER MANAGE
R) 4, dynamic RAM (DRAM) 5, subcode operation controller (SUBCODE OPERATION CONTR
OLLER) 6, CD-ROM encoder (CD-ROM EN
CODER) 7, and CD-ROM decoder (CD-ROM
DECODER) 9 is also provided.

Further, an audio circuit (AUDIO) 10,
System controller (SYSTEM CONTROLLER) 11, C
D encoder (CD ENCODER) 12, CD decoder (C
D DECODER) 13, servo circuit (SERVO) 14, spindle motor controller 15, and SCSI bus 16
Is equipped with. This CD-R drive device is a program area (PROG
Recording and reproduction of information (data) for a plurality of blocks of a track formed in RAM AREA).

The CPU 1 is a central processing LSI that controls all the processing operations of the CD-R drive device. That is, at the time of mounting the address information of the track in the program area after power-on or insertion of the CD-R disk 8,
When the address information of the track recorded in the PMA area of the CD-R disk 8 cannot be reproduced due to a reproduction error, reproduction is performed based on the address information in the TOC recorded in the lead-in area of the CD-R disk 8. It fulfills the function of a means for generating address information that could not be created.

The power-on or CD-R disc 8
When the address information of the track recorded in the PMA area of the CD-R disc 8 cannot be reproduced due to a reproduction error during the mounting process of the address information of the track in the program area after the insertion, before and after the address information which cannot be reproduced. It also functions as a means for generating address information that could not be reproduced based on the address information recorded in the.

Further, when the address information of two or more consecutive tracks cannot be reproduced due to a reproduction error, it also functions as a means for prohibiting reproduction of the track of the address information that could not be reproduced and a means for warning the prohibition of the reproduction. .

Further, when the last address information recorded in the PMA area cannot be reproduced due to a reproduction error, means for judging whether or not the track in the program area corresponding to the address information which could not be reproduced is blank. Also, a function of additionally recording address information by a track recording command after the address information that could not be reproduced in the PMA area so as to be additionally recordable from the track judged as blank is fulfilled.

Further, when it is determined that the track in the program area corresponding to the address information that could not be reproduced is not blank, means for prohibiting additional recording of the track in the program area and means for warning the prohibition of the additional recording. Also functions.

Further, when recording on a new track, it also functions as a means for re-recording the sector in which the address information of the track that could not be reproduced is recorded to make the sector unreproducible. Further, it also functions as a means for generating the address information that could not be reproduced when the reproduction error is a data error in which many data errors cannot be corrected.

The flash ROM 2 is a non-volatile memory in which information can be electrically erased and rewritten by the CPU 1. The host interface controller 3 uses the SCS
It is an LSI that controls information communication with a host computer connected via the I-bus 16. The buffer manager 4
This is an LSI that controls the transfer of information transferred from the host computer and information read from the CD-R disk 8 to the host computer.

The dynamic RAM 5 is a buffer memory for temporarily storing the information transferred from the host computer and the information read from the CD-R disk 8 and transferred to the host computer. Subcode The operation controller 6 generates subcodes to be recorded on the CD-R disc 8 and subcodes read from the CD-R disc 8 into subcodes P, Q, R, and
This is an LSI that manages control processing for separating into S, T, U, V, and W channels.

The CD-ROM encoder 7 is a CD-RO.
This is an LSI that controls a control process for modulating M data before recording it on the CD-R disc 8. The CD-R disc 8 is
An optical disc of a recording medium for recording various data,
A plurality of tracks for storing various data are formed in the program area on the recording surface, and each track is composed of a plurality of blocks. Also, CD-R
On the inner circumference side of the disk 8, the start time of each track,
P to record track address information such as stop time
The MA area is arranged.

The CD-ROM decoder 9 is an LSI which controls the demodulation of the CD-ROM data read from the CD-R disc 8. The audio circuit 10 is C
This is an LSI that controls the reproduction of music or voice by the data recorded on the D-R disk 8.

The system controller 11 controls a functional unit such as an optical pickup (not shown) to record and reproduce various data with respect to the CD-R disc 8.
That is, it corresponds to a data recording / reproducing means for recording and reproducing data for a plurality of blocks of a track formed in the program area of the CD-R disc 8.

The CD encoder 12 is an LSI which controls a control process for modulating user data and subcode information recorded on the CD-R disc 8 so as to meet the media standard. The CD decoder 13 is an LSI that controls the data read from the CD-R disc 8 into user data and subcodes and demodulates them. Servo circuit 14
Is an LSI that controls drive control processing of a servo system such as focusing and tracking when recording and reproducing data on the CD-R disk 8.

The spindle motor controller 15 is
It controls rotation of the CD-R disk 8 when recording and reproducing data. The SCSI bus 16 is a communication line for exchanging various kinds of information between the CD-R drive device and the host computer.

FIG. 2 is a diagram showing an example of the physical format of the CD-R disk 8 used in the CD-R drive device of this embodiment. The recording surface 21 of the CD-R disk 8 is a PCA area (Power Caliber) from the innermost circumference to the outermost circumference, as shown by enlarging the hatched portion in the drawing.
bration area 22, PMA area (Program Memory Are)
a) 23, a lead-in area (Lead-In Area) 24, a program area (Program Area) 25, and a lead-out area (Lead-Out Area) 26.

The PCA area 22 is an area used for adjusting (calibrating) the recording power (write power) when recording data. PMA area 23
Is an area for recording the address information of the tracks of the CD-R disc. The lead-in area 24 is an area for recording session information. The program area 25 is an area for recording user data in track units. The lead-out area 26 is an area indicating the end of the session.

FIG. 3 shows the CD-R disc 8 shown in FIG.
5 is a diagram showing an example of a format of track information of a PMA area 23 of FIG. An example of this format is a recordable compact disc system description (Recordable Compact Disc), which is a standard for CD-WO (CD-R disc) called Orange Book.
c System Description: NVPhilips and Sony Corpora
tion).

The PMA area 23 is for recording information about the track before recording data on the track or after recording data on the track. Then, the CD-R disc 8 is write once.
Since it is a disc, it cannot be rewritten to that area.

The lead-in area 24 has a TOC (Table of
Information of Contents) is recorded. The contents of TOC information are shown below. (A) Track number in which the data is recorded, start time of the track, information indicating whether the track is audio or data, copyright information (b) First recorded data in the program area Start position of the last track number (d) lead-out area where data is recorded in the track number (c) program area

The contents to be recorded as options are shown below. (B) Number of skipped intervals (≤40) (b) Number of skipped tracks (≤21) (c) Track number to be skipped (d) Start time and stop time of skipped interval

The contents recorded on the hybrid disc are shown below. (B) Optimum recording power (Optimu
m recording power) recommended value (b) Disk application code (Disk App
lication Code) This is either restricted use or unrestricted use (unre
stricted use). If limited use, it is either General Purpose or Special Purpose (Special P
urpose).

(C) Start time of the first lead-in of the hybrid disc-Tag time representing the hybrid-Start time of the next recordable program area of the hybrid disc-Start of the outermost recordable lead-out of the hybrid disc Time CD-DA, CD-ROM, CD-I, CD-ROM
Types of disk types such as XA

The program area 25 includes a plurality of tracks N.
o. 1, No. 2, No. .. are formed, and each track is composed of a plurality of blocks and records various data. The block is the smallest unit.

Next, the processing of this CD-R drive device will be described. This CD-R drive device, when the address information mounting process of the track of the program area after power-on (power-on) or insertion of the CD-R disk 8 is performed, the track recorded in the PMA area of the CD-R disk 8 is When the TOC is recorded in the lead-in area when the address information cannot be reproduced due to a data error in which there are many data errors and the error cannot be corrected, reproduction is performed based on the address information in the TOC recorded in the lead-in area. Generate address information that could not be done,
The process moves to recording and reproduction.

If the TOC is not recorded, P
The address information that could not be reproduced is generated based on the address information recorded before and after the address information that could not be reproduced in the MA area, and the process proceeds to recording and reproduction.

Further, when the address information of two or more consecutive tracks cannot be reproduced due to a reproduction error, the reproduction of the track of the address information which could not be reproduced is prohibited,
Data that warns that the reproduction is prohibited is output to the host computer.

Furthermore, when the last address information recorded in the PMA area could not be reproduced due to a reproduction error, it is judged whether or not the track in the program area corresponding to the address information that could not be reproduced is blank. If it is blank, additional recording is possible from that track PM
The address information by the track recording command is additionally recorded after the address information that could not be reproduced in the area A.

If the track in the program area corresponding to the address information that could not be reproduced is not blank, the additional recording of the track in the program area is prohibited, and data for warning the prohibition of the additional recording is issued to the host computer. Output to. Furthermore, when recording on a new track, the sector is made unreproducible by re-recording on the sector in which the address information of the track that could not be reproduced is recorded.

Next, the processing of the CD-R drive device will be further described. This CD-R drive device
As an initial setting, additional data can be recorded even if there is a playback error. FIG. 4 is a flowchart showing a process of mounting track information of this CD-R drive device.

(1) Track information mount process In step 1 (indicated by "S" in the figure), the PMA area is accessed to start PMA read, and the process advances to step 2 to initialize the track number (track count) N. Set the value to "1".

Thereafter, the process proceeds to step 3, and it is judged whether the PMA area for the track is blank (data is not recorded). If it is not blank, the process proceeds to step 4 and the address information of the track can be reproduced. Determine whether or not. If the address information of the track cannot be reproduced due to a reproduction error in the determination processing of step 4, the process proceeds to step 5 and it is determined whether the content of the reproduction error is a data error.

If the data error is a reproduction error in the discrimination process of step 5, the process proceeds to step 6 to set the data error flag "1" for the track, and step 7
Then, the track count N is incremented by 1, and the process returns to step 3 to repeat a series of processing loops for reproducing the address information of the next track.

In the processing loop, the track designated in the PMA area is reproduced, and when the predetermined number of blank sectors are detected, the reproduction processing of the PMA area is terminated, and the process proceeds to step 11 to access the TOC area. Start TOC lead.

After that, the routine proceeds to step 12, where it is judged whether or not the TOC is recorded in the TOC area. If the TOC is not recorded in the TOC area, the routine proceeds to step 15 where the TOC no flag "1" is set. And then step 1
4, the track information generation routine for generating the track information of the CD-R disc is executed.

In the determination process of step 12, T is set in the TOC area.
If the OC is recorded, proceed to step 13 and TOC
The routine for comparing the data with the PMA data is executed, and the routine proceeds to step 14, where the track information generation routine for generating the track information of the CD-R disc is executed.

On the other hand, if the address information of the designated track in the PMA area can be reproduced in the judgment processing of step 4, the process proceeds to step 8 to obtain the address information of the designated track, and the process proceeds to step 7 to set the track count N to 1 After incrementing, the process returns to step 3 to continue the PMA area reproducing process.

When it is determined in step 5 that the content of the reproduction error is a reproduction error other than a data error such as a servo error, the process proceeds to step 9 and the additional recording prohibition flag is set to set the CD-R disc. The additional recording of data in the program area is prohibited, the process proceeds to step 10 and the reproduction prohibition flag is set to prohibit the reproduction of the data recorded in the program area of the CD-R disc, and the track information mounting process is performed. finish.

Next, the processing of the above-mentioned comparison routine of TOC data and PMA data will be described in detail. FIG. 5 is a flowchart showing the processing of the comparison routine of the TOC data and PMA data shown in FIG.

(2) Comparison processing of TOC data and PMA data In this processing, the track count N is set to the initial value "1" in step (indicated by "S" in the figure) 21, and the process proceeds to step 22 to cause a data error. Based on whether or not the flag is set to "1", it is determined whether or not the PMA area reproduction processing could not reproduce the address information of the track due to a reproduction error of a data error.

When it is judged in the judgment processing of step 22 that the data error flag is "1" and the address information cannot be reproduced due to the reproduction error of the data error, the routine proceeds to step 23, where the TOC information in the TOC area is copied, T
From the start address information (start time) of the track recorded in the OC area, the start address (start time) and stop address (stop time) of the track that could not be reproduced are calculated to generate address information, and the process proceeds to step 24. Then, the data error flag "1" for the track is cleared and the process proceeds to step 25.

In step 25, it is judged whether or not the designated track is the last track recorded in the program area. If it is not the last track, the process proceeds to step 26, the track count N is incremented by 1 and the process returns to the first process. , The comparison processing of the TOC data and PMA data of the next track information is continued.

If the data error flag is "0" and the address information of the designated track can be reproduced in the judgment processing of step 22, the routine proceeds to step 27, where TO
It is judged whether or not there is a comparison error between the C data and the PMA data, and if it is not a comparison error, the process proceeds to step 24, and if it is the comparison error, the process proceeds to step 28 to set the additional recording prohibition flag and additionally record the data in the program area. Ban,
In step 29, the reproduction prohibition flag is set to prohibit reproduction of the data recorded in the program area.

Next, the processing of the above-mentioned track information generation routine will be described in more detail. FIG. 6 is a flowchart showing detailed processing of the track information generation routine shown in FIG.

(2) Track information generation processing This processing is performed at step 31 (indicated by "S" in the figure) at TO.
Whether or not TOC information is recorded is determined based on whether or not the C-free flag is set to "1". If the TOC non-existence flag is "0" and the TOC information is recorded in the judgment of the step 31, this processing is ended.
In this case, the process of generating the address information that could not be reproduced is executed based on the address information before and after the address information that could not be reproduced in the PMA area.

If the TOC absence flag is "1" and the TOC information is not recorded in the judgment of step 31, the process proceeds to step 32, the track count N is set to the initial value "1", and the process proceeds to step 33. Based on whether the data error flag is set to "1" or not, it is determined whether or not the address information of the designated track is a reproduction error during PMA area reproduction.

If the data error flag is "0" in the judgment at step 33 and the address information of the designated track is not a reproduction error at the time of reproducing the PMA area, the routine proceeds to step 39, where the track number N is incremented by 1 and step 3
Returning to step 3, the judgment process is continued whether the next designated track has a reproduction error.

If the data error flag is "1" in the judgment of step 33 and the address information of the designated track is a reproduction error at the time of reproducing the PMA area, the process proceeds to step 34 to determine whether the designated track is the last track recorded in the program area. If it is not the final track, the process proceeds to step 35 to determine whether the address information of the next track is also a reproduction error based on whether the data error flag of the next track is set to "1". To judge. That is, it is checked in this process whether or not the address information of two or more consecutive tracks cannot be reproduced due to a reproduction error.

If the data error flag is "0" in the judgment of step 35 and the address information of the next track is not a reproduction error, it is judged that the address information of two or more consecutive tracks cannot be reproduced. Then, the process proceeds to step 36 to judge whether or not the track is the last track recorded in the program area, and if it is not the last track, the process returns to step 35 and whether or not there is a reproduction error due to the data error flag for the next track. The judgment process of is continued.

If the next track is the last track recorded in the program area in the judgment of step 36, step 3
7, the additional recording prohibition flag is set to prohibit the additional recording of data in the program area, and the process proceeds to step 38 to set the reproduction prohibition flag of the tracks after the track number indicated by the value of the track count N. Prohibit playback of data on those tracks.

If the data error flag is "1" in the judgment of step 35 and the address information of the next track is also a reproduction error, it proceeds to step 40 and it is judged whether or not the data error track is continuous, If the error tracks are not continuous, the process proceeds to step 42 and the track information that could not be reproduced based on the start address (start time) and the stop address (stop time) of the track information before and after the track information that could not be reproduced in the PMA area. To generate.

When it is judged in step 40 that the address information of two or more consecutive tracks cannot be reproduced, step 4
In step 1, the reproduction prohibition flag of the data error track is set, and an error code for warning reproduction prohibition is output to the host computer to warn reproduction prohibition. Then, the process proceeds to step 39, the track count N is incremented by 1, and the information generation of other tracks is continued.

That is, the processing of step 41 is 2
When it is not possible to play back address information that is continuous over more than one track, it enables additional recording of tracks (additional recording of data) in the program area, prohibits playback of the tracks of address information that could not be played, and warns that playback is prohibited. It is a process to do.

If it is the last track recorded in the program area in the judgment in step 34, the program area is read in step 43, and it is judged in the step 44 whether or not the track is blank. For example, the process proceeds to step 45 to set the additional recording prohibition flag, prohibit additional recording of the track in the program area, and output an error code warning the additional recording prohibition to the host computer to warn the additional recording prohibition.

That is, in step 45, when the track in the program area corresponding to the address information that could not be reproduced is not blank, the additional recording of the track in the program area is prohibited and the prohibition of the additional recording is warned.

If the result of determination in step 44 is blank, the process proceeds to step 46, in which the address information by the track recording command is additionally recorded after the address information that could not be reproduced, and the additional recording can be performed on the last track of the program area as it is. Proceeding to step 47, the sector in which the address information before the additionally recorded address information of the final track is recorded is overwritten with predetermined data to re-record and disable reproduction.

That is, the processing of the above step 46 is P
When the last address information recorded in the MA area could not be reproduced, when the track in the program area corresponding to the address information that could not be reproduced was blank,
This is a process of additionally recording the address information by the track recording command after the address information in which the PMA area could not be reproduced from the blank track so as to be additionally recordable.

Also, when the above-mentioned step 47 records on a new track, it is a process of re-recording on the sector in which the address information of the track which could not be reproduced is recorded and making that sector unreproducible.

Next, the track information generating process described above will be further described. FIG. 7 is an explanatory diagram of the track information generation process. As shown in FIG. 7A, the CD-R
Track No. of the PMA area on the disk 8 1-No.
It is a normal case when the address information up to 6 can be reproduced. In the figure, the tracks that can be reproduced are marked with a circle.

However, as shown in FIG. 7B, C
Track No. of PMA area of D-R disk 8 1 to N
o. Among the address information up to 6, the track number. When the address information of No. 3 is not obtained, if the TOC is recorded, the track number is determined based on the TOC information. 3 address information is generated. In the figure, tracks that could not be reproduced are marked with "x".

If the TOC is not recorded, the track number. 2 stop address (stop time) and track number. Start address of 4 (start time)
Based on the track No. Address information of the start address (start time) and the stop address (stop time) of No. 3 is generated.

Further, as shown in FIG. 7C, the CD
-Track number of the PMA area of the R disk 8 1 to N
o. Among the address information up to 6, the track number. 3 and No. If the address information of two consecutive tracks of No. 4 could not be reproduced, the track number. 3 stop address and track number. Since the start address (start time) of 4 cannot be identified, reproduction is prohibited.

Next, the effects of this CD-R drive device will be listed. (1) Since the address information of the track that could not be reproduced in the PMA area can be generated from the address information of the track in the TOC, the correct track address information can be obtained even if an arbitrary sector in the PMA area cannot be reproduced. Additional recording and reproduction can be performed on the CD-R disc.

(2) Even if the address information of the track is not recorded in the TOC, the track information of the track that could not be reproduced is determined based on the address information before and after the address information of the track that could not be reproduced in the PMA area. Since the address information is generated, the address information of the correct track can be obtained, and additional recording and reproduction can be performed on the CD-R disc.

(3) When the address information of a track cannot be reproduced continuously from two or more tracks from the PMA area,
Since the additional recording is possible on the CD-R disc and the reproduction is prohibited, it is possible to effectively use the unrecorded space of the program area on the disc and the start address (start time) is not known at the time of reproduction. It is possible to prevent a system error that occurs.

(4) When the track address information is recorded in the PMA area and no data is recorded in the program area track corresponding to the address information, additional recording from the blank track may be performed. Therefore, the unrecorded space of the program area on the disc can be effectively used.

(5) When data is recorded on the track of the program area corresponding to the address information of the PMA area, additional writing of the track can be prohibited and the other tracks of the track can be correctly reproduced. . Further, since the data of the track that cannot be reproduced due to the reproduction error of the address information can be stored, it can be reused by the processing such as backup.

(6) When the track address information is recorded in the PMA area and no data is recorded in the track of the program area corresponding to the address information, when additional recording is performed from the blank track, that track Multiple address information will be recorded in the PMA area, but unnecessary address information will be automatically disabled for playback, so correct track address information can be obtained when mounting track address information. , The track can be played normally.
Therefore, when the address information of the track cannot be reproduced, the additional recording of data does not cause double writing in the program area.

(7) When the PMA area is reproduced, if the pickup cannot follow the recording groove of the disk and a servo error such as a track deviation occurs and the address information of an arbitrary track cannot be obtained, the track can be additionally recorded in the program area. Even in the state, it is not possible to record the address information of the track in the PMA area. Therefore, the above-mentioned processing is not performed, and the above-mentioned processing is performed only when the reproduction error of the data error occurs. Information can be recorded. This C
The D-R drive is a power-on or CD-R disc.
Address information map of the track in the program area after insertion.
Of the tracks recorded in the PMA area during
If the address information could not be reproduced due to a reproduction error
Recorded in the lead-in area of the CD-R disc.
Could not be played based on the address information in the TOC
Address information is generated, so playback will be performed due to a playback error.
The address information of the track that could not be recorded is set to the TOC
Address information can be generated, so any PMA area can be
Address of the correct track even if the specified sector cannot be played
You can get information about the CD-R disc
Additional recording and reproduction of data can be performed. Also power on
Or, the track of the program area after inserting the CD-R disc
CD-R disc
The address information of the track recorded in the PMA area
If it cannot be played due to a playback error,
Addresses recorded before and after the missed address information
Address information that could not be reproduced based on the address information
If you do so, the address of the track that could not be played is
Addresses of the previous and next tracks that obtained the track information from the PMA area
Since it can be generated from the information, TOC is written on the CD-R disc
Correct track address even if is not recorded
You can get information about the CD-R disc
Additional recording and reproduction of data can be performed. In addition, the playback error
Cannot reproduce address information that continues for two or more tracks.
Address information tracks that could not be played when
Prohibit playback and warn of the prohibition of playback
For example, you can enable additional recording on CD-R discs
The unrecorded space in the gram area can be used effectively.
Come, Do not be able to play the address information by consecutive 2 or more tracks
It occurs because the start time cannot be specified because it was wrong
It is possible to avoid problems such as system errors. Well
In addition, due to a playback error, the last record recorded in the PMA area
If the dress information could not be reproduced, can it not be reproduced?
Program area track corresponding to the address information
Is determined to be blank,
The PMA area cannot be played back so that additional recording can be performed from the track
Address information by the track recording command.
If additional information is recorded in the program area,
Check if the area where the track should exist is blank
If blank, record data as a new track
By doing this, the program area of the CD-R disc is not written.
The recording space can be used effectively. This is C
Track address information in the PMA area of the D-R disc
, And then write data to that track in the program area.
When recording, track address information in the PMA area
When the disc is ejected just by recording
, Only track address information is recorded in the PMA area
Data is recorded on that track in the program area.
It will be in a state that has not been done. CD-R device in such a state
Even if the disc is inserted, the tracks in the program area
Check if the area that should exist is blank and
When it is judged that it is a new track, the data is recorded.
Can be recorded. In addition, the address that could not be played
Track in the program area corresponding to the track information is blank
If it is determined that the program area is not
Prohibit additional recording of a track and warn of the prohibition of additional recording
Data recorded on other tracks.
Can be played correctly and the address information
It is possible to save the data recorded on no tracks
And that data can be backed up later
It Furthermore, when recording on a new track, playback
Address information of tracks that could not be recorded is recorded
If you re-record to a sector and make that sector unplayable,
When recording data on a new track, a playback error may occur.
Address information of the sector in the PMA area is recorded.
To re-record any potential sectors and make them unplayable
Then, it seems that there are two types of address information for the same track.
A state can it to avoid, mount of address information
Sometimes you can get the correct track address information
It And again, there are many data errors due to playback errors.
-Unable to play when there is an uncorrectable data error
Additional recording of data by generating address information
Track address to the correct address in the PMA area.
Information can be recorded.

[0093]

As described above, according to the CD-R drive device of the present invention, data can be recorded and reproduced even if a reproduction error occurs in the PMA area of the CD-R disc. -R The memory area of the disk medium can be effectively used without wasting valuable data recorded on the disk.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a CD-R drive device according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a physical format of a CD-R disc used in the CD-R drive device shown in FIG.

3 is a diagram showing an example of a format of track information of a PMA area of the CD-R disc shown in FIG.

FIG. 4 is a flowchart showing a process of mounting track information in the CD-R drive device shown in FIG.

5 is a flowchart showing a process of a comparison routine of TOC data and PMA data shown in the flowchart of FIG.

6 is a flowchart showing a process of a track information generation routine shown in the flowchart of FIG.

7 is an explanatory diagram of a track information generation process of the CD-R drive device shown in FIG. 1. 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: CD-R disc 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 22: PCA area 23: PMA area 24: Lead-in area 25: Program area 26: Lead-out area

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukuni Hashimoto 1-3-6 Nakamagome, Ota-ku, Tokyo Within Ricoh Co., Ltd. (56) Reference JP-A-2-301073 (JP, A) JP-A 4-247326 (JP, A) JP 4-246327 (JP, A) JP 4-78085 (JP, A) JP 4-79088 (JP, A) JP 2-197938 (JP, A) Actual Kaihei 6-77080 (JP, U) Actual Kaihei 5-50562 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G11B ^7/ 00-7/0013 G11B 20 / 12 G11B 20/18

Claims (4)

(57) [Claims] 1. A track in the program area after power-on or insertion of the CD-R disk in a CD-R drive device equipped with data recording / reproducing means for recording and reproducing data to and from the program area of the CD-R disk. when the address information mounting process, first determines whether or not reproducing address information of the tracks recorded in the PMA area of the CD-R disc
It was possible to reproduce by one judgment means and the first judgment means.
When judged, the track recorded in the PMA area is recorded.
The address information data of the rack is compared with the address information data in the TOC recorded in the lead-in area of the CD-R disc corresponding to the address information,
And means for inhibiting the additionally recorded according to the comparison result, the second
When the track address information recorded in the PMA region with one of the determination means determines that could not be reproduced by the reproduction error, not the be reproduced based on the address information in the TOC corresponding to the address information The first address information source that generates the address information
A CD-R drive device, characterized in that it is provided with a forming means. 2. The CD-R drive device according to claim 1, wherein it is determined whether or not the information of the TOC is recorded.
The second judging means and the track recorded in the PMA area of the CD-R disc by the first judging means at the time of mounting the address information of the track in the program area after power-on or insertion of the CD-R disc. determine and address information of can not be reproduced by the reproduction error
And the TOC information is determined by the second determining means.
When it is determined that not recorded, it said generates address information which can not be reproduced on the basis of the address information recorded before and after the address information could not be reproduced
A CD-R drive device comprising a second address information generating means. 3. The CD-R drive device according to claim 1, wherein when the reproduction error cannot reproduce the address information that continues for two or more tracks, the reproduction of the track of the address information that cannot be reproduced is prohibited. A CD-R drive device, characterized by comprising: 4. The CD-R drive device according to claim 1, wherein the first address generating unit generates the address information that could not be reproduced.
The CD-R drive device, wherein the dress information generating means is means for generating the address information that could not be reproduced when the reproduction error is a data error that cannot be corrected due to many data errors.