JP3602935B2 - Information recording / reproducing device - Google Patents

Description

[0001]
TECHNICAL 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 data on and from an optical disk such as a CD-R and a CD-RW.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, data is recorded on an optical disk such as a CD-R or the like in track units, table of contents information (TOC) recorded on the optical disk is read, and information recording / reproducing is performed to determine whether the optical disk is a read-only disk or a recordable disk. There has been an apparatus (for example, see JP-A-4-106758 and JP-A-5-205279).
[0003]
In the information recording / reproducing apparatus as described above, the number of tracks recorded in the PMA area is usually the same as the number of tracks existing in the program area in the mounting process when an arbitrary optical disc on which data is recorded is inserted. . When a reserved track exists, the number of tracks recorded in the PMA area is larger.
[0004]
However, a track not recorded in the program memory area (PMA area) for managing track information may be detected in the program area.
For example, track numbers 1 to X are recorded in the PMA area, while tracks with track numbers 1 to X + 1 are recorded in the program area.
[0005]
The reason why such a track exists may be as follows.
(1) A servo error occurred during or before recording in the PMA area, and track information could not be recorded in the PMA area.
(2) A write error such as a servo error occurred while recording a track, and the subsequent track information could not be recorded in the PMA area.
[0006]
[Problems to be solved by the invention]
However, in the information recording / reproducing apparatus as described above, a track that is not recorded in a program memory area (PMA area) for managing track information in a mounting process when an arbitrary optical disc on which data is recorded is inserted is stored in the program area. Since the number of tracks based on the track information in the PMA area does not match the number of tracks existing in the program area, it is impossible to additionally write data thereafter, and the recordable area of the optical disc is wasted. There was a problem that would be.
[0007]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to enable subsequent recording even if a track in which track information is not recorded in a program memory area of a recordable optical disc is in the program area. And
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides an information recording / reproducing apparatus provided with means for recording and reproducing data in track units on a recordable optical disc, wherein a mounting process is performed when an optical disc on which data is recorded is inserted. When a track in which no track information is recorded in the program memory area is detected in the program area, a start address and an end address of the detected track are detected, and track information including the detected start address and end address is stored in the program memory. Means for appending to the areaWhen there is an error track in a session where the lead-in area and the lead-out area on the optical disc are not recorded, the table of contents of the error track is erased, and the track number of the track following the error track is set to 1 Means to subtract and record byIs provided.
[0009]
Further, in an information recording / reproducing apparatus provided with means for recording and reproducing data in track units on a recordable optical disk, track information is recorded in a program memory area by a mounting process when an optical disk on which data is recorded is inserted. When a track that has not been detected is detected in the program area, it is determined whether or not the length of the detected track satisfies the minimum standard value. Dummy data is added from the end to extend to a track length satisfying the minimum specification value, a start address and an end address of the extended track are detected, and track information including the detected start address and end address is stored in the program memory. Means for appending to the areaWhen there is an error track in a session where the lead-in area and the lead-out area on the optical disc are not recorded, the table of contents of the error track is erased, and the track number of the track following the error track is set to 1 Means to subtract and record byShould be provided.
[0010]
Further, it is preferable to provide a means for setting the reproduction inhibition for the track of the additionally written track information.
[0011]
Further, in an information recording / reproducing apparatus provided with means for recording and reproducing data in track units on a recordable optical disk, track information is recorded in a program memory area by a mounting process when an optical disk on which data is recorded is inserted. When a track that has not been detected is detected in the program area, it is determined whether or not the length of the detected track satisfies the minimum standard value. When the track satisfies the minimum standard value, the vicinity of the end address of the track is reproduced, When the run-out block cannot be detected, it is determined that the track is an error track, the start address and the end address of the detected track are detected, and track information including the detected start address and end address is added to the program memory area. For the track with the added track information Means for setting a reproduction prohibitedWhen there is an error track in a session where the lead-in area and the lead-out area on the optical disc are not recorded, the table of contents of the error track is erased, and the track number of the track following the error track is set to 1 Means to subtract and record byShould be provided.
[0012]
Further, it is preferable to provide a means for recording the reproduction prohibition information indicating the reproduction prohibition setting on the inserted optical disk.
[0014]
An information recording / reproducing apparatus according to claim 1 of the present invention is configured such that when a track on which track information is not recorded in a program memory area is detected in a program area in a mounting process when an optical disk on which data is recorded is inserted, the detection is performed. The start address and end address of the detected track are detected, and track information including the detected start address and end address is added to the program memory area.Further, when there is an error track in a session where the lead-in area and the lead-out area are not recorded on the optical disk, the table of contents information of the error track is erased, and the track number of the track following the error track is set to 1 Subtract and record.
[0015]
Therefore, when a track on which track information such as a start address and an end address is not recorded in the program memory area of the optical disc is detected in the program area in the mounting process when the optical disc is inserted, the track information of the track is detected. Thus, a new track can be added after the track, and the free area of the optical disk can be effectively used.Further, when the data is reproduced by the reproduction-only device, the track having the track length satisfying the minimum standard value by additionally writing the dummy data on the optical disk and the predetermined run-out block cannot be detected even if the track length satisfies the minimum standard value. It is possible to prevent the reproduction of the error track, and it is possible to avoid the trouble caused by reproducing the error track.
[0016]
Further, with respect to tracks recorded in the program area of the optical disc, additional writing cannot be performed unless the track length meets the minimum standard value.
For example, in the case of a CD-R disc, the minimum standard value of the track length: 300 sectors is defined in the CD-R disc specification (CD-WO Ver. 2.0) called Orange Book, and the track length is 300. Additional recording cannot be performed on a CD-R disc having tracks smaller than a sector.
[0017]
Therefore, the information recording / reproducing apparatus according to claim 2 of the present invention is configured such that when a track on which track information is not recorded in the program memory area is detected in the program area in the mounting process when an optical disk on which data is recorded is inserted, It is determined whether or not the length of the detected track satisfies the minimum standard value. If the length of the track does not satisfy the minimum standard value, the track is determined to be an error track, and dummy data is added from the end of the detected track to add the minimum standard value. The track length is extended to a value that satisfies the value, the start address and end address of the extended track are detected, and track information including the detected start address and end address is added to the program memory area.Further, when there is an error track in a session where the lead-in area and the lead-out area are not recorded on the optical disk, the table of contents information of the error track is erased, and the track number of the track following the error track is set to 1 Subtract and record.
[0018]
Therefore, when a track recorded on the optical disk has a track length less than the minimum standard value, dummy data is added to the track so that the track length satisfies the minimum standard value. Additional recording can be performed, and the empty area of the optical disk can be effectively used.Further, when the data is reproduced by the reproduction-only device, the track having the track length satisfying the minimum standard value by additionally writing the dummy data on the optical disk and the predetermined run-out block cannot be detected even if the track length satisfies the minimum standard value. It is possible to prevent the reproduction of the error track, and it is possible to avoid the trouble caused by reproducing the error track.
[0019]
For example, if there is a track on the CD-R disc having a track length that does not reach the minimum standard value of 300 sectors, it can be determined that some write error has occurred during recording on that track.
Also, since the track length of the track is restored to 300 sectors and recorded, a new track can be added after the track.
[0020]
Furthermore, even if a track determined to be an error track is reproduced, the data cannot be correctly reproduced to the end because the track is terminated halfway, so that the reproduction process is wasted and the work efficiency is reduced. I will.
[0021]
Therefore, the information recording / reproducing apparatus according to claim 3 of the present invention sets reproduction inhibition for the track of the additionally written track information.
[0022]
Therefore, by prohibiting the reproduction of the track having the track length satisfying the minimum standard value by additionally writing the dummy data, the unnecessary processing time of the host computer, the reproduction application software, and the information recording / reproducing apparatus due to the reproduction of the track is reduced. Therefore, the working efficiency can be improved.
[0023]
Further, even if the track length of the track satisfies the minimum standard value, a write error occurs during recording, and there is an error track in which a predetermined run-out block is not recorded at the end of the track.
Even if such an error track is reproduced, the data cannot be correctly reproduced to the end because the track ends halfway, so that the reproduction process is wasted and the work efficiency is reduced.
[0024]
Therefore, the information recording / reproducing apparatus according to claim 4 of the present invention, when a track in which track information is not recorded in the program memory area is detected in the program area in the mounting process when an optical disc on which data is recorded is inserted, It is determined whether or not the length of the detected track satisfies the minimum standard value. When the length of the track satisfies the minimum standard value, the vicinity of the end address of the track is reproduced. Judge and detect the start address and end address of the detected track, add track information consisting of the detected start address and end address to the program memory area, and prohibit reproduction of the track of the added track information. Set.Further, when there is an error track in a session where the lead-in area and the lead-out area are not recorded on the optical disk, the table of contents information of the error track is erased, and the track number of the track following the error track is set to 1 Subtract and record.
[0025]
Therefore, by prohibiting the reproduction of a track for which a predetermined run-out block has not been detected even if the track length satisfies the minimum specification value, the host computer, reproduction application software, and information recording / reproducing apparatus for reproducing the track are prohibited. Wasteful processing time can be reduced, and work efficiency can be improved.Further, when the data is reproduced by the reproduction-only device, the track having the track length satisfying the minimum standard value by additionally writing the dummy data on the optical disk and the predetermined run-out block cannot be detected even if the track length satisfies the minimum standard value. It is possible to prevent the reproduction of the error track, and it is possible to avoid the trouble caused by reproducing the error track.
[0026]
In addition, when mounting the optical disc, the reproduction of the track whose track length satisfies the minimum standard value by adding dummy data and the track whose predetermined run-out block cannot be detected even if the track length satisfies the minimum standard value are prohibited. However, if the data is reproduced by the read after remounting, the reproduction processing is wasted and the working efficiency is reduced.
[0027]
Therefore, an information recording / reproducing apparatus according to a fifth aspect of the present invention records reproduction prohibition information indicating the reproduction prohibition setting on the inserted optical disc.
[0028]
Therefore, the reproduction prohibition information for the track having the track length satisfying the minimum standard value by additionally writing the dummy data on the optical disc and the track for which the predetermined run-out block cannot be detected even when the track length satisfies the minimum standard value is provided. By recording the data on the optical disk, the reproduction of the track can be prohibited based on the reproduction prohibition information even when the optical disk is remounted, so that the useless reproduction processing time of the host computer, the reproduction application software, and the information recording / reproducing apparatus is reduced. And work efficiency can be improved.
[0032]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a CD-R drive according to an embodiment of the information recording / reproducing apparatus of the present invention.
[0033]
The CD-R drive includes a user microcomputer (CPU) 1, a flash ROM 2, a host interface (I / F) controller 3, a buffer manager 4, a DRAM 5, a subcode operation controller 6, a CD-ROM encoder 7, an SRAM 8, and a CD-ROM. It comprises a ROM decoder 9, an audio controller 10, a system controller 11, a CD encoder 12, a CD decoder 13, a servo 14, and a spindle controller 15.
[0034]
The CPU 1 is a central processing LSI that controls all operations of the CD-R drive. The flash ROM 2 is a nonvolatile memory that can be erased and rewritten by the CPU. The host I / F controller 3 is an LSI that controls data communication between the host computer and the CD-R drive.
The buffer manager 4 is an LSI that controls transfer of data transferred from the host computer and data read from the optical disk 20.
[0035]
The DRAM 5 is a memory for temporarily storing data transferred from the host computer and data read from the optical disk 20.
The subcode operation controller 6 is an LSI that generates subcodes (SUBP, Q, R,..., W) to be recorded on the optical disc 20 and separates subcodes read from the optical disc 20.
[0036]
The CD-ROM encoder 7 is an LSI that modulates CD-ROM data before writing it on the optical disc 20. The SRAM 8 is a memory for storing program variables and the like. The CD-ROM decoder 9 is an LSI for demodulating the reproduced CD-ROM data.
[0037]
The audio controller 10 is an LSI that controls music playback. The system controller 11 is an LSI that controls recording and reproduction of information on the optical disc 20. The CD encoder 12 is an LSI that modulates user data and subcode transferred from the host computer before recording information on the optical disc 20 so as to conform to the disc standard.
[0038]
The CD decoder 13 is an LSI that separates information reproduced from the optical disc 20 into user data and subcodes and demodulates the information.
The servo 14 controls the track positioning when writing information to the optical disk 20 and when reading information from the optical disk 20. The spindle controller 15 is an LSI that controls the rotation of the optical disc 20.
[0039]
That is, the system controller 11 and the like record and reproduce data in track units on a recordable optical disk, and track information is recorded in a program memory area by a mounting process when an optical disk on which data is recorded is inserted. When a track that has not been detected is detected in the program area, the start address and end address of the detected track are detected, and the track information including the detected start address and end address is added to the program memory area. .
[0040]
Also, when a track in which track information is not recorded in the program memory area is detected in the program area in the mounting process when an optical disc on which data is recorded is inserted, the length of the detected track satisfies the minimum standard value. It is determined whether or not the track does not satisfy the minimum specification value, and is determined to be an error track, and dummy data is added from the end of the detected track and extended to a track length satisfying the minimum specification value. The function also serves as means for detecting the start address and end address of the program and adding track information comprising the detected start address and end address to the program memory area.
[0041]
Further, it also functions as a means for setting the reproduction inhibition for the track of the added track information.
[0042]
Also, when a track in which track information is not recorded in the program memory area is detected in the program area in the mounting process when an optical disc on which data is recorded is inserted, the length of the detected track satisfies the minimum standard value. If the minimum specification value is satisfied, the vicinity of the end address of the track is reproduced. If a run-out block cannot be detected, it is determined that the track is an error track and the start address and end address of the detected track are determined. , The track information including the detected start address and end address is additionally recorded in the program memory area, and a function of setting reproduction inhibition to the track of the additionally recorded track information is also performed.
[0043]
Further, it also functions as a means for recording the reproduction inhibition information indicating the reproduction inhibition setting on the inserted optical disk.
[0044]
Furthermore, when there is an error track in a session where the lead-in area and the lead-out area on the optical disc are not recorded, the index information of the error track is erased, and the track number of a track following the error track is changed. It also functions as a means for recording by subtracting one by one.
[0045]
Next, the format of a CD-R disc will be described.
FIG. 2 is an explanatory diagram showing an example of the format of a CD-R disc.
The CD-R disc is an optical disc on which information can be recorded and reproduced, and as shown in FIG. 2, a power calibration area (PCA area) 21, a program memory area (PMA area) 22, a lead-in area from the inner circumference side. 23 and a program area 24.
[0046]
A PCA (Power Calibration Area) area 21 is a recording area for performing calibration, which is test writing for determining the recording power of laser light when recording information on an optical disk.
The program area (Program Area) 24 is a recording area in which one or a plurality of tracks (Tracks) 25 are formed from the beginning and information is recorded on each track 25. For example, in the case of a music CD, one track of data is recorded on one track.
[0047]
A PMA (Program Memory Area) area 22 is a recording area for recording track information such as a start address, an end address, and a data mode of each track 25.
[0048]
By the way, usually, the user data transferred from the host computer is recorded in the recording area of the optical disc 20 in session units.
The session (Session) 30 includes a lead-in (Lead-In) area 23, one or more tracks 25, and a lead-out (Lead-Out) area 26.
[0049]
The lead-in area 23 is a recording area indicating the beginning of the session 30 and records therein table of contents information (TOC) as track information of the tracks included in the session 30. The lead-out area 26 is a recording area indicating the end of the session 30 and records the start address of the first track 25 in the session 30.
[0050]
An optical disc in which a plurality of sessions are formed in the program area 24 is called a multi-session disc.
For example, a commercially available music CD is a single session disc, and the disc has one lead-in area and one lead-out area. On the other hand, a multi-session disc has a plurality of combinations of a lead-in area and a lead-out area, and it is common to record user data transferred from a host computer in a multi-session format.
[0051]
FIG. 3 is an explanatory diagram showing the format of the PCA area shown in FIG.
The PCA area 21 on the CD-R disc includes a test area (Test Area) 50 and a count area (Count Area) 51.
[0052]
The test area 50 is divided into 100 partitions, and each time power calibration is performed once, one partition is used. Therefore, power calibration cannot be performed more than 100 times.
[0053]
The count area 51 is divided into 100 partitions, and each partition corresponds to each partition of the test area 50. Each time one partition of the test area 50 is used in power calibration, the partition corresponds to that partition. Record as indicating that it has been used for one partition. That is, the count area 51 is used to search for an unused partition in the test area 50.
[0054]
The areas before and after the 100 partition in the test area 50 are not used because they are used for searching the start position of the 100 partition and the start position of the count area 51, respectively.
[0055]
In this CD-R drive, normally, a buffer area (1) after 100 partitions of the count area 51 used for searching for the start position of the PMA area 22 is read from the buffer area (1) for inhibiting the reproduction of tracks. It is also used as an area for recording protection information.
[0056]
Next, a track format of a CD-R disc will be described.
FIG. 4 is an explanatory diagram showing an example of a track format of a CD-R disc. The track 25 on the CD-R disc includes a pre-gap (Pre Gap) area 40, a user data (User Data) area 41, and a run-out (Run Out) area 42.
[0057]
The pre-gap area 40 is located at the beginning of the track, and is composed of, for example, 150 blocks or 225 blocks.
The pre-gap region 40 includes a link (Link) region 43 and a run-in (Run In) region 44. The link region 43 is a single link block (Link Block) indicating a joint between tracks. The area 44 includes four run-in blocks (Run In Block) indicating the head of the track.
[0058]
The user data area 41 is a recording area for recording user data transferred from the host computer, and includes a plurality of blocks.
The run-out area 42 includes two run-out blocks (Run Out Block) indicating the end of the track.
[0059]
FIG. 5 is an explanatory diagram of information to be recorded in the PMA area of the CD-R disc. A start address of a track indicated by a broken line frame (2) in the drawing and a track address indicated by a broken line frame (3) in the drawing are shown. Record the track information of the end address. FIG. 6 is an explanatory diagram of the TOC data recorded in the lead-in area of the CD-R disc. Point information (POINT) "01" to "99" is track information.
[0060]
Next, a description will be given of a mounting process of acquiring and recording unrecorded track information in the PMA area of the optical disk when the optical disk is inserted into the CD-R drive. FIG. 7 is a flowchart showing the mounting process.
[0061]
When the optical disc 20 is inserted, a spin-up process for rotating the optical disc in a steady state is executed in step (indicated by "S" in the figure) 1, and the process proceeds to step 2 to focus the laser beam on the recording surface of the optical disc. The process is executed, and the process proceeds to step 3 to execute a tracking process for causing the actuator to follow the track groove of the optical disk. The process proceeds to step 4 to detect the ATIP at the home position, which is the center of the lead-in area of the optical disk. An ATIP reproduction process is performed.
[0062]
On the recording surface of the CD-R disc, ATIP is recorded in a track groove, and a physical address (minute, second, frame) is recorded in the ATIP. When this ATIP is detected, it can be determined that a CD-R disk has been inserted, and when ATIP has not been detected, it is determined that a stamp disk such as a CD-ROM generally sold in the market has been inserted. can do.
[0063]
Therefore, when a CD-R disc is inserted, the ATIP can be detected by the ATIP reproduction processing in step 4, and when an optical disc other than a CD-R disc such as a CD-ROM is inserted, the ATIP reproduction processing is performed in step 4. ATIP cannot be detected.
[0064]
Proceed to step 5 to determine whether or not the disc is a CD-R disc based on the result of the ATIP reproduction processing in step 4. If ATIP is detected, discriminate that the disc is a CD-R disc and proceed to step 6, where ATIP is not detected. Sometimes it is determined that the disc is not a CD-R disc, and the process proceeds to step 8.
[0065]
In step 6, a PMA read for reading track information recorded in the PMA area of the CD-R disc is executed, and the process proceeds to step 7, where the number of tracks "X" is obtained from the track information.
[0066]
As shown in FIG. 5, the start address and end address of all tracks recorded on the optical disc are recorded in the PMA area regardless of the number of sessions. The number of tracks “X” can be obtained based on the track number.
[0067]
Proceed to step 8 to execute the TOC read for reproducing the lead-in area and reading the TOC information recorded in the lead-in area, and proceed to step 9 to execute the track information of the track in the session based on the TOC information. And proceeds to step 9 to reproduce all the lead-in areas when the optical disc is a multi-session disc and to acquire the number of sessions.
[0068]
As shown in FIG. 6, TOC information is recorded in the TOC area, and when the point information (POINT) is “01” to “99”, the value indicates the track information of the track existing in the session. ing. In a CD-ROM device (device exclusively for reproducing information), the TOC area is reproduced at the time of mounting to obtain track information.
[0069]
If the ATIP is not detected in step 5, it is determined that the disc is not a CD-R disc but a stamp disc such as a CD-ROM, and the process proceeds to step 8 to reproduce the lead-in area, which is recorded in the lead-in area. A TOC read for reading out the TOC information is executed, and the process proceeds to step 9 to obtain track information of a track in the session based on the TOC information. Play the in-area and get the number of sessions.
[0070]
Proceed to step 10 to determine whether the inserted optical disc is a CD-R disc, and if it is a CD-R disc, proceed to step 11 to proceed to the next track (X) of the maximum track number recorded in the PMA area. The head of the track (X + 1) having the track number is reproduced in the program area.
[0071]
The reproduction process is a process for confirming whether or not a track (X + 1) in which track information is not recorded in the PMA area exists in the program area on the optical disc. If it is determined that the track (X + 1) exists in the disc, additional recording is prohibited or the disc is recognized as an illegal disc.
[0072]
Proceeding to step 12, it is determined whether or not a reproduction signal has been detected when reproducing the track (X + 1). When a reproduction signal has been detected, the processing proceeds to step 13 and the track (X + 1) is cut by a half method from the break of the reproduction signal. Of the last address (end address).
[0073]
In the half method, an arbitrary reference address on the optical disk is accessed, and if a reproduction signal is present, a half position of the start address and the reference address is accessed, and if the reproduction signal is present, a further half position is accessed. This is a method of gradually narrowing the area.
[0074]
Proceeding to step 14, a track recovery process (recovery process) for recording the start address and the end address (end address) of the track (X + 1) as track information of the track (X + 1) in the PMA area is executed, and this process ends.
[0075]
Next, a track recovery process in which the CD-R drive performs recording based on a predetermined standard of the CD-R disc at the time of the mounting process described above will be described.
In the track recovery processing in step 14 of the mounting processing described above, the track information (start address and end address of the track) obtained based on the break of the reproduction signal in the program area of the CD-R disc is recorded as it is. When data is recorded on a disc, the data must be recorded in accordance with a predetermined standard, or the recorded data cannot be reproduced.
[0076]
Therefore, it is preferable to execute a track recovery process for recording based on a predetermined standard of the CD-R disc during the mounting process described above.
FIG. 8 is a flowchart showing the track recovery processing.
[0077]
Here, a case will be described in which the processing is executed in place of step 14 in FIG. 7 described above. In step 21, when track end position information including a start address and a last address (end address), which is a break of a reproduction signal of the track (X + 1) not recorded in the PMA area of the CD-R disc, is obtained. The information is stored in the DRAM, and the flow advances to step 22 to calculate and determine the track length "Y" of the track (X + 1) from the track end position information (start address and end address) in the DRAM. It is determined whether or not the length “Y” is less than 300 sectors.
[0078]
For a CD-R disc, the standard book "Orange Book" stipulates that the track length must be a minimum standard value: 300 sectors or more. Therefore, in a CD-R drive conforming to the Orange Book standard, it can be determined that the track length of a track that has been successfully recorded on the CD-R disk is 300 sectors or more. Further, even if a track having a track length of less than 300 sectors is recorded on a CD-R disc, some error occurs during recording, and the recording fails.
[0079]
If the track length is "Y" <300 in step 23, the process proceeds to step 24, where track (X + 1) is determined to be an error track, an error flag is set for track (X + 1), and an error for track (X + 1) is performed. The flag is stored and stored in the DRAM, and the process proceeds to step 25 where dummy data is recorded at the end of the track (X + 1) to form a track area of 300 sectors including the track (X + 1) and the dummy data, and the track area is formed. And proceeds to step 26.
[0080]
On the other hand, if the track length "Y" is determined to be 300 sectors or more in step 23, the process proceeds to step 30 to reproduce the vicinity of the last address (end address) of the track (X + 1), and proceeds to step 31 based on the reproduction result. It is determined whether there is a run-out block.
[0081]
For the CD-R disc, the above-mentioned standard "Orange Book" stipulates that a run-out block of two sectors must be recorded at the end of a track. Therefore, a track without a two-sector run-out block at the end can be determined to have an error during recording.
[0082]
If there is no run-out block in step 31, the process proceeds to step 32, where track (X + 1) is determined to be an error track in which an error has occurred during recording, and an error flag is set as error information in track (X + 1). The error flag for (X + 1) is stored and stored in the DRAM, and the process proceeds to step 26. On the other hand, if there is a run-out block in the determination of step 31, it is determined that the track has been correctly recorded according to the standard, and the process proceeds to step 26.
[0083]
In step 26, track information including a start address and an end address of the track (X + 1) is recorded. At this time, if the track length "Y" of the track (X + 1) is less than 300 sectors in the above processing, the start address and the end address of the track (track length is 300 sectors) composed of the track (X + 1) and the dummy data are set. If the track (X + 1) has a track length "Y" of 300 sectors or more and has a run-out block of two sectors at the end, the start address and the end address of the track (X + 1) are recorded, and the track (X + 1) is recorded. If the length “Y” is 300 sectors or more and there is no runout block of 2 sectors at the end, the start address and end address of the track (X + 1) are recorded.
[0084]
Proceeding to step 27, it is determined whether or not the recording of the track information in the PMA area has failed. This determination is a determination as to whether track information has been retried (re-recorded) a predetermined number of times in the PMA area. If the retry is not over, the process returns to step 26 to re-record the track information in the PMA area, and proceeds to step 27 to determine whether or not the recording has failed.
[0085]
In this manner, when the recording of the track information in the PMA area fails, the re-recording of the track information in the PMA area is repeated in steps 26 to 28, and a predetermined number of retries until the recording in the PMA area succeeds: Perform re-recording of the count.
[0086]
When the retry is over in the determination in step 28 and the track information cannot be recorded in the PMA area even after the re-recording of the predetermined number of times is performed, the process proceeds to step 29 and a mount error is set on the CD-R disc, This processing ends.
[0087]
If the track information has been successfully recorded in the PMA area in the determination of step 27, the process proceeds to step 33 to determine whether or not an error flag is set in the DRAM. It is determined that the recording has succeeded, and this processing ends.
[0088]
If an error flag has been set in the DRAM in the judgment of step 33, the flow advances to step 34 to set read protection information as reproduction prohibition information for prohibiting reproduction of the track (X + 1), and the flow advances to step 35 to immediately before the PMA area. The buffer area records the read protection information for the track (X + 1), and ends this processing.
This read protection information is recorded in the buffer area (1) provided in the count area 51 of the PCA area 21 of the CD-R disc as shown in FIG.
[0089]
If an error occurs during the recording of a track on a CD-R disc, the track is incomplete and all data cannot be reproduced correctly.
Therefore, if the read protection information for the error track is recorded, it is not necessary to execute the reproduction of the track that has recognized the read protection information at the time of remounting the CD-R disc.
[0090]
Next, when a CD-R disc that has been subjected to the mounting process described above is used in a reproduction-only device, an error track cannot be recognized.
In the read-only device, when mounting an optical disc such as a CD-R or CD-ROM, only the TOC information is reproduced to obtain the track information. This is because the recorded read protection information cannot be referred to.
[0091]
That is, even if the error track on the optical disk is determined as described above and the reproduction inhibition is set for the error track, the reproduction of the error track cannot be inhibited when the optical disk is reproduced by the reproduction-only device.
This is because the read-only device reproduces only the TOC information at the time of mounting the optical disc to obtain the track information, and cannot recognize the error track on the optical disc.
Therefore, when closing a session in which an error track exists, the TOC data may be rewritten so as not to refer to the error track.
FIG. 9 is a flowchart showing a session closing process after the mounting process shown in FIG.
[0092]
This process is a process based on a SCSI command: Fixation command of an instruction for recording the lead-in area and the lead-out area when the session is closed. In step 41, the session number (No.) of the session in which the lead-in area and the lead-out area are not recorded (referred to as "open session") is confirmed, and the flow advances to step 42 to change the track number of the track in the session. The number of tracks is obtained, and a TOC table is created from the track information.
[0093]
Proceeding to step 43, it is determined whether or not there is a track in which read protection is set in the session based on the read protection information in the buffer area {circle around (1)}. When there is a track in which read protection is set, Proceeding to step 44, the track information of the track for which the read protection is set is deleted from the TOC table, and the flow advances to step 45 to increment the track number of the track subsequent to the track for which the read protection is set by one. Execute the process.
[0094]
In the number changing process, for example, when the track with the track number (X + 1) is an error track and the subsequent tracks are the track numbers (X + 2), (X + 3),. Each time, the track number is changed to (X + 1), (X + 2),.
Thus, the error track in the session is apparently erased.
[0095]
Proceeding to step 46, create a TOC table which is actual TOC information based on the above processing, proceed to step 47, execute the lead-in area recording processing, proceed to step 48, and determine whether the lead-in area recording processing has ended in error. Judge.
If it is determined in step 48 that the recording of the lead-in area ends in an error for some reason, the process proceeds to step 51, where an error code corresponding to the error state is set, and this processing ends.
[0096]
If it is determined in step 48 that the process has not ended with an error, the process proceeds to step 49 to execute a lead-out area recording process, and proceeds to step 50 to determine whether or not the lead-out region recording process has ended in an error.
If it is determined in step 50 that the error has occurred in the lead-out area recording processing for some reason, the process proceeds to step 51, where an error code corresponding to the error state is set, and this processing ends.
If the determination in step 50 is not an error end, this process ends.
[0097]
The CD-R drive detects a track in the PMA area of the CD-R disc in which track information such as a start address and an end address is not recorded in the program area during the mounting process when the CD-R disc is inserted. Sometimes, the track information of the track is detected and recorded in the PMA area, so that a new track can be added after the track, and the empty area of the CD-R disc can be used effectively.
[0098]
If there is a track on the CD-R disc whose track length does not reach the minimum standard value defined by the Orange Book: 300 sectors, it can be determined that a write error has occurred during recording of the track. Since the track length of the track is restored to 300 sectors and recorded, a new track can be added after the track.
[0099]
Furthermore, by adding dummy data and prohibiting the reproduction of an error track having a track length satisfying the minimum standard value: 300 sectors, the host computer, reproduction application software, and CD-R drive for reproducing the error track are reproduced. Wasteful processing time can be reduced, and work efficiency can be improved.
[0100]
Further, by prohibiting the reproduction of an error track whose predetermined run-out block has not been detected even if the track length satisfies the minimum standard value: 300 sectors, the host computer, reproduction application software, Useless processing time of the CD-R drive can be reduced, and work efficiency can be improved.
[0101]
Further, an error track whose track length satisfies the minimum standard value: 300 sectors by adding dummy data on the CD-R disc and a predetermined run-out block are detected even when the track length satisfies the minimum standard value: 300 sectors Reproduction prohibition information for error track that could not be recorded: By recording read protection information on the CD-R disc, it is possible to prohibit reproduction of the track based on the reproduction prohibition information even when the CD-R disc is remounted. As a result, useless reproduction processing time of the host computer, reproduction application software, and CD-R drive can be reduced, and work efficiency can be improved.
[0102]
Furthermore, when data is reproduced by a reproduction-only device, dummy data on a CD-R disc is additionally recorded to have an error track having a track length satisfying the minimum standard value: 300 sectors, and a track length satisfying the minimum standard value: 300 sectors. The error track for which the predetermined run-out block could not be detected cannot be referred to, and the reproduction thereof cannot be performed. Thus, it is possible to avoid a problem caused by reproducing the error track.
[0103]
【The invention's effect】
As described above, according to the information recording / reproducing apparatus of the present invention, even if a track in which track information is not recorded in the program memory area of the recordable optical disc is in the program area, subsequent recording can be performed. be able to.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of a CD-R drive according to an embodiment of an information recording / reproducing apparatus of the present invention.
FIG. 2 is an explanatory diagram showing an example of a format of a CD-R disc used in the CD-R drive shown in FIG.
FIG. 3 is an explanatory diagram showing an example of a format of a PCA area of the CD-R disc shown in FIG.
FIG. 4 is an explanatory diagram showing an example of a track format of a CD-R disc used in the CD-R drive shown in FIG.
FIG. 5 is an explanatory diagram of information recorded in a PMA area of the CD-R disc shown in FIG.
FIG. 6 is an explanatory diagram of TOC data recorded in a lead-in area of the CD-R disc shown in FIG.
FIG. 7 is a flowchart showing a mounting process for acquiring and recording unrecorded track information in a PMA area of an optical disc into which the CD-R drive shown in FIG. 1 is inserted.
8 is a flowchart showing a track recovery process for recording based on a predetermined standard of a CD-R disc at the time of the mounting process shown in FIG. 7;
FIG. 9 is a flowchart showing a session closing process after the mounting process shown in FIG. 7;
[Explanation of symbols]
1: User microcomputer (CPU)
2: Flash ROM
3: Host interface (I / F) controller
4: Buffer manager 5: DRAM
6: Subcode operation controller
7: CD-ROM encoder 8: SRAM
9: CD-ROM decoder
10: Audio controller
11: System controller
12: CD encoder
13: CD decoder 14: Servo
15: Spindle controller 20: Optical disk
21: Power calibration area (PCA area)
22: Program memory area (PMA area)
23: Lead-in area 24: Program area
25: Track 26: Lead-out area
30: Session 40: Pre-gap area
41: User data area 42: Run-out area
43: Link area 44: Run-in area
50: test area 51: count area
(1): Buffer area (2): Start address
(3): End address

Claims (5)

An information recording / reproducing apparatus comprising means for recording and reproducing data in track units on a recordable optical disc,
When a track on which track information is not recorded in the program memory area is detected in the program area in the mounting process when an optical disc on which data is recorded is inserted, the start address and end address of the detected track are detected. Means for appending track information comprising the detected start address and end address to the program memory area; and, when there is an error track in a session where no lead-in area and lead-out area are recorded on the optical disc, Means for erasing the table of contents information of the track and subtracting one from the track number of the track following the error track for recording. An information recording / reproducing apparatus comprising means for recording and reproducing data in track units on a recordable optical disc,
When a track in which track information is not recorded in the program memory area is detected in the program area in the mounting process when an optical disc on which data is recorded is inserted, whether or not the length of the detected track satisfies the minimum specification value. If the minimum standard value is not satisfied, it is determined that the track is an error track, and dummy data is added from the end of the detected track and extended to a track length satisfying the minimum standard value, and the start of the extended track is started. Means for detecting an address and an end address, and adding track information comprising the detected start address and end address to the program memory area; and When there is an error track, the error track Contents erase information, the information recording and reproducing apparatus characterized by comprising a means for recording by subtracting one of the track number of the subsequent track to said error track. The information recording / reproducing apparatus according to claim 2,
An information recording / reproducing apparatus, further comprising means for setting a reproduction prohibition for a track of the additionally written track information. An information recording / reproducing apparatus comprising means for recording and reproducing data in track units on a recordable optical disc,
When a track in which track information is not recorded in the program memory area is detected in the program area in the mounting process when an optical disc on which data is recorded is inserted, whether or not the length of the detected track satisfies the minimum specification value. If the minimum standard value is satisfied, the vicinity of the end address of the track is reproduced, and if a run-out block cannot be detected, it is determined to be an error track and the start address and end address of the detected track are detected. and to append the track information consisting of start address and end address detection in the program memory area, and means for setting a reproduction inhibition to the track of the recordable track information, a lead-in area and the lead on the optical disk Out area is not recorded When there is an error track within said erases contents information error track, the information recording and reproducing, characterized in that a means for recording by subtracting one of the track number of the subsequent track error track apparatus. The information recording / reproducing apparatus according to claim 3 or 4,
An information recording / reproducing apparatus, further comprising means for recording reproduction prohibition information indicating the reproduction prohibition setting on the inserted optical disc.

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