JP3734442B2 - Information recording / reproducing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information recording / reproducing apparatus, and more particularly to an information recording / reproducing apparatus suitable for a rewritable information recording medium such as a CD-RW or a DVD + RW.
[0002]
[Prior art]
In recent years, as the functions of personal computers have improved, it has become possible to handle AV (Audio-Visual) information such as music and video. Since the amount of AV information is very large, optical discs such as CD-RW and DVD + RW have attracted attention as information recording media. With the reduction in price, optical disc devices as information recording / reproducing devices have become personal computers. It became popular as one of the peripheral devices.
[0003]
In a rewritable optical disk such as CD-RW or DVD + RW, it is necessary to randomly access a spiral or concentric recording area when recording and reproducing information. A standard called Disc Format (hereinafter referred to as “UDF”) is adopted. In the following, the direction approaching the rotation center of the optical disk is referred to as the inner circumferential direction or the inner circumferential side, and the direction away from the rotation center of the optical disk is referred to as the outer circumferential direction or the outer circumferential side.
[0004]
In the CD-RW, before data recording is performed, it is necessary to perform an initialization process for recording dummy data in advance on the entire recording area or a designated area, that is, a so-called formatting process.
[0005]
Also, with DVD + RW, data can be recorded without performing the recording area initialization process. However, if there is an unrecorded part in which no data is recorded, the conventional DVD -The recorded data cannot be reproduced by a ROM drive device or the like. That is, compatibility with the DVD-ROM is lost. Therefore, when it is necessary to maintain compatibility with the DVD-ROM, a format process for recording dummy data in advance on the entire surface of the recording area or the designated area is also required for the DVD + RW.
[0006]
However, due to the dramatic increase in storage capacity of optical discs recently, a lot of time is required for formatting. That is, there is an inconvenience that even if the user obtains the optical disc, information cannot be recorded immediately.
[0007]
In order to improve such inconvenience, for example, in Japanese Patent Laid-Open No. 11-134799, when there is a format processing request from the host device, the permission of recording and playback is notified to the host device before the formatting process is started. An information recording / reproducing apparatus is disclosed in which when a recording or reproduction request is received from a host device during formatting processing, the formatting processing is interrupted and recording or reproduction is preferentially performed, and when the recording or reproduction is completed, the formatting processing is resumed. ing.
[0008]
In this way, the format process performed using the time when there is no recording or reproduction request from the host apparatus is called background format process.
[0009]
[Problems to be solved by the invention]
[0010]
If there is a request to eject the optical disk during the background formatting process, the formatting process is incomplete, so a temporary read is performed so that the ejected optical disk can be played back by a conventional DVD-ROM drive device or the like. Out (Temporary Lead Out, hereinafter referred to as “TLO”) is recorded.
[0011]
This TLO is located on the outermost side in an area (hereinafter referred to as “data area”) in which data (including recording data (hereinafter referred to as “user data”), dummy data, etc. from the host device) is recorded. Data is recorded from the address following the end address (Last Written Address, hereinafter referred to as “LWA”) of the data area. In order to maintain compatibility with the DVD-ROM, dummy data is recorded in an unrecorded portion between the head address of the recording area and the TLO. That is, some data is recorded from the start address of the recording area to the TLO, and there is no unrecorded portion.
[0012]
If the recording area of the optical disk is divided into N sectors, the sector on the innermost side is sector 1, and the sector on the outermost side is sector N, the UDF standard records file information, directory information, etc. Information called an anchor volume descriptor pointer (hereinafter referred to as “AVDP”), which is a pointer indicating the current address, is recorded in at least one of sector N and sector (N-256) and sector 256. It is supposed to be done.
[0013]
Therefore, for example, when AVDP is already recorded in sector N, if there is a request to eject the optical disk, AVDP is also a type of data, so LWA is the position following AVDP, and TLO is recorded in sector N. This is recorded following the AVDP being recorded. If there is an unrecorded portion between the start address of the recording area and the TLO, as described above, the extracted optical disk cannot be reproduced by a conventional DVD-ROM drive device or the like. Although it is recorded, if the above-mentioned data area is small, it takes a long time to record the dummy data. Therefore, there is a disadvantage that the optical disk may not be ejected immediately even if there is a ejection request.
[0014]
The present invention has been made under such circumstances, and an object thereof is to provide an information recording / reproducing apparatus capable of discharging an information recording medium in a short time in response to a request for discharging the information recording medium during formatting. There is to do.
[0015]
[Means for Solving the Problems]
The invention described in claim 1 A lead-in area, a user data area, and a lead-out area are provided from the inner periphery toward the outer periphery. An information recording / reproducing apparatus for recording and reproducing information on a spiral or concentric recording area of a rewritable information recording medium, the information recording medium comprising: User data area Initializing means for recording temporary data in an unrecorded portion in which no data is recorded; recording processing by the initialization means based on a discharge request for the information recording medium during recording by the initializing means Interruption means for interrupting the recording process; when the recording process in the initialization means is interrupted, Except for the specific data recorded near the outer periphery of the user data area, the data recorded on the outermost side in the user data area An information recording / reproducing apparatus comprising: address acquisition means for acquiring the address of the terminal; and termination information recording means for recording termination information including temporary lead-out information following the address position obtained by the address acquisition means. .
[0016]
According to this, when there is a request for discharging the information recording medium during the temporary data recording by the initialization means, the recording process by the initialization means is interrupted by the interruption means. And by the address acquisition means, Except for specific data recorded near the outer periphery of the user data area, data recorded on the outermost side in the user data area The end information including temporary lead-out information is recorded by the end information recording means following the address position. For example, as specific data Even if file management information is recorded, User data Following this, temporary lead-out information is recorded. Conventionally, when file management information is recorded, temporary lead-out information is recorded at a position following the file management information. User data and file management information Temporary data had to be recorded in an unrecorded area between. Therefore, the information recording medium can be discharged in a short time in response to the request for discharging the information recording medium being formatted.
[0017]
In this case, as in the information recording / reproducing apparatus according to claim 2, User data area Provisional data recording means for recording provisional data in an unrecorded portion existing between the head address of the address and the address obtained by the address acquisition means. In such a case, User data area Even if there is an unrecorded part between the head address of the address and the address where temporary lead-out information is recorded, temporary data is recorded in the unrecorded part by the temporary data recording means. Therefore, the discharged information recording medium can be reproduced by a conventional drive device.
[0018]
In each of the information recording / reproducing apparatuses according to claim 1 and 2, the information recording / reproducing apparatus according to claim 3, User data area Is divided into a plurality of sectors, Specific data Said User data area Any of the sector located on the outermost periphery of the disk and 256 consecutive sectors with the sector as the last sector Recorded Can be. In such a case, for example, even when the UDF standard is adopted as the file system, the information recording medium can be ejected in a shorter time than in the past.
[0019]
In each of the information recording / reproducing apparatuses according to claims 1 to 3, the information recording / reproducing apparatus according to claim 4, Specific data Information on whether or not Lead-in area Recording information recording means for recording at a predetermined position can be further provided. In such a case, for example, when the formatting process of the discharged information recording medium is resumed, Specific data Can be prevented from being overwritten with temporary data.
[0020]
Claims above 3. Information recording / reproducing apparatus according to 3 In the information recording / reproducing apparatus according to claim 5, prior to the provisional data recording by the initialization means, Sector where specific data is recorded It is possible to further include a specific area recording means for recording temporary data. In such a case, for example, when the formatting process of the discharged information recording medium is resumed, Sector in which data is recorded No formatting process is required, for example Specific data Even if is recorded Specific data Can be prevented from being overwritten with temporary data.
[0021]
6. The information recording / reproducing apparatus according to any one of claims 1 to 5, wherein, as in the information recording / reproducing apparatus according to claim 6, the termination information includes file management information and the temporary lead-out information. can do. In such a case, for example, when the UDF standard is adopted as the file system, User data area There are two AVDPs between the head address of the first address and the address where the temporary lead-out information is recorded, and the information recording medium can be made compliant with the UDF standard. Therefore, it is possible to reliably reproduce the recorded data even using a conventional drive device that employs the UDF standard.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0023]
FIG. 1 is a block diagram showing a schematic configuration of an optical disc apparatus 20 as an information recording / reproducing apparatus according to an embodiment of the present invention.
[0024]
1 includes a spindle motor 22, an optical pickup device 23, a laser control circuit 24, an encoder 25, a motor driver 27, and a reproduction signal processing circuit 28 for rotationally driving an optical disk 15 as an information recording medium. , A servo controller 33, a buffer RAM 34, a buffer manager 37, an interface 38, a ROM 39, a CPU 40, a RAM 41, and the like. Note that the arrows in FIG. 1 indicate the flow of typical signals and information, and do not represent the entire connection relationship of each block.
[0025]
In the present embodiment, as an example, DVD + RW is used as the optical disc 15.
[0026]
The optical pickup 23 is a semiconductor laser as a light source, an optical system that guides a light beam emitted from the semiconductor laser to a recording surface of the optical disk 15 and guides a return light beam reflected by the recording surface to a predetermined light receiving position, It includes a light receiver that is disposed at a light receiving position and receives a return light beam, a drive system (such as a focusing actuator, a tracking actuator, and a seek motor) (all not shown). The light receiver outputs a current (current signal) corresponding to the amount of received light to the reproduction signal processing circuit 28.
[0027]
The reproduction signal processing circuit 28 converts a current signal, which is an output signal of the optical pickup 23, into a voltage signal, and based on the voltage signal, a wobble signal, an RF signal including reproduction information, and a servo signal (a focus error signal or a track error). Signal). The reproduction signal processing circuit 28 extracts ADIP (ADdress In Pre-groove) information and a synchronization signal from the wobble signal. The extracted ADIP information is output to the CPU 40, and the synchronization signal is output to the encoder 25. Further, the reproduction signal processing circuit 28 performs error correction processing or the like on the RF signal and then stores it in the buffer RAM 34 via the buffer manager 37. The focus error signal and the track error signal are output from the reproduction signal processing circuit 28 to the servo controller 33.
[0028]
The servo controller 33 generates a control signal for controlling the focusing actuator of the optical pickup 23 based on the focus error signal, and generates a control signal for controlling the tracking actuator of the optical pickup 23 based on the track error signal. Both control signals are output from the servo controller 33 to the motor driver 27.
[0029]
The buffer manager 37 manages the accumulation of data in the buffer RAM 34, and notifies the CPU 40 when the amount of accumulated data reaches a predetermined value.
[0030]
The motor driver 27 drives the focusing actuator and tracking actuator of the optical pickup 23 based on a control signal from the servo controller 33. Further, the motor driver 27 controls the spindle motor 22 based on an instruction from the CPU 40 so that the linear velocity of the optical disk 15 is constant. Further, the motor driver 27 drives the seek motor of the optical pickup 23 based on an instruction from the CPU 40 to control the position of the optical pickup 23 in the sledge direction (radial direction of the optical disk 15).
[0031]
The encoder 25 takes out the data stored in the buffer RAM 34 through the buffer manager 37 based on an instruction from the CPU 40, adds an error correction code, and creates write data to the optical disc 15. Based on an instruction from the CPU 40, write data is output to the laser control circuit 24 in synchronization with the synchronization signal from the reproduction signal processing circuit 28.
[0032]
The laser control circuit 24 controls the output of the semiconductor laser of the optical pickup 23 based on the write data from the encoder 25.
[0033]
The interface 38 is a bidirectional communication interface with a host (for example, a personal computer) and conforms to standard interfaces such as ATAPI (AT Attachment Packet Interface) and SCSI (Small Computer System Interface).
[0034]
The ROM 39 stores a program written in a code readable by the CPU 40.
[0035]
The CPU 40 controls the operation of each unit according to the program stored in the ROM 39 and temporarily stores data necessary for the control in the RAM 41.
[0036]
Next, a processing operation when data is recorded on the optical disc 15 using the optical disc apparatus 20 configured as described above will be briefly described.
[0037]
When the CPU 40 receives a recording request from the host, the CPU 40 outputs a control signal for controlling the rotation of the spindle motor 22 based on the recording speed to the motor driver 27 and also indicates that the recording request has been received from the host. 28 is notified. When the rotation of the optical disk 15 reaches a predetermined linear velocity, an output signal from the optical pickup device 23 is output to the reproduction signal processing circuit 28. The reproduction signal processing circuit 28 acquires ADIP information based on the output signal from the optical pickup device 23 and notifies the CPU 40 of it. Further, the reproduction signal processing circuit 28 detects the focus error signal and the track error signal based on the output signal from the optical pickup device 23 and outputs it to the servo controller 33. The servo controller 33 drives the focusing actuator and tracking actuator of the optical pickup device 23 via the motor driver 27 based on the focus error signal and the track error signal from the reproduction signal processing circuit 28, and corrects the focus deviation and the track deviation. To do.
[0038]
When receiving data from the host, the CPU 40 stores the data in the buffer RAM 34 via the buffer manager 37. When the amount of data stored in the buffer RAM 34 exceeds a predetermined value, the buffer manager 37 notifies the CPU 40.
[0039]
Upon receiving the notification from the buffer manager 37, the CPU 40 instructs the encoder 25 to create write data. Based on the ADIP information from the reproduction signal processing circuit 28, the CPU 40 outputs a signal that instructs the seek operation of the optical pickup 23 to the motor driver 27 so that the optical pickup 23 is positioned at a predetermined writing start point.
[0040]
When the CPU 40 determines that the position of the optical pickup 23 is the writing start point based on the ADIP information, the CPU 40 notifies the encoder 25. The encoder 25 records write data on the optical disk 15 via the laser control circuit 24 and the optical pickup 23. Until the recording process is completed, the reproduction signal processing circuit 28 detects the focus error signal and the track error signal based on the output signal from the optical pickup device 23 as described above, and the servo controller 33 and the motor driver 27 are turned on. The focus shift and the track shift are corrected as needed.
[0041]
Next, a processing operation when reproducing data recorded on the optical disc 15 using the optical disc apparatus 20 described above will be briefly described.
[0042]
When receiving a reproduction request from the host, the CPU 40 outputs a control signal for controlling the rotation of the spindle motor 22 to the motor driver 27 based on the reproduction speed, and also indicates that the reproduction request has been received from the host. 28 is notified. When the rotation of the optical disk 15 reaches a predetermined linear velocity, an output signal from the optical pickup device 23 is output to the reproduction signal processing circuit 28. The reproduction signal processing circuit 28 acquires ADIP information based on the output signal from the optical pickup device 23 and notifies the CPU 40 of it. Further, the reproduction signal processing circuit 28 detects the focus error signal and the track error signal based on the output signal from the optical pickup device 23 and outputs it to the servo controller 33. The servo controller 33 drives the focusing actuator and tracking actuator of the optical pickup device 23 via the motor driver 27 based on the focus error signal and the track error signal from the reproduction signal processing circuit 28, and corrects the focus deviation and the track deviation. To do.
[0043]
Based on the ADIP information, the CPU 40 outputs a signal for instructing a seek operation so that the optical pickup device 23 is positioned at a predetermined reading start point, to the motor driver 27.
[0044]
Based on the ADIP information, the CPU 40 checks whether or not it is a reading start point. If the CPU 40 determines that the position of the optical pickup device 23 is a reading start point, the CPU 40 notifies the reproduction signal processing circuit 28. Then, the reproduction signal processing circuit 28 detects the RF signal based on the output signal of the optical pickup device 23, performs error correction processing, etc., and then stores it in the buffer RAM 34. Until the reproduction process is completed, the reproduction signal processing circuit 28 detects the focus error signal and the track error signal based on the output signal from the optical pickup device 23 as described above, and the servo controller 33 and the motor driver 27 are turned on. The focus shift and the track shift are corrected as needed.
[0045]
The buffer manager 37 transfers the reproduction data stored in the buffer RAM 34 to the host via the interface 38 when the reproduction data is prepared as sector data.
[0046]
Next, a processing operation when performing the background formatting process of the optical disc 15 using the optical disc apparatus 20 described above will be described with reference to FIGS. The flowchart of FIG. 2 corresponds to a series of processing algorithms executed by the CPU 40. In addition, the file system in the optical disc 15 is based on UDF.
[0047]
Here, as shown in FIG. 3A, the optical disk 15 is a blank disk having tracks including a lead-in area LIA, a user data area YDA as a recording area, and a lead-out area LOA. The actual track of the optical disk 15 has a spiral shape, but in FIGS. 3 to 5, the track is shown in a straight line for convenience. 3 to 5, the left side of the paper is the inner peripheral side of the optical disc 15, and the right side of the paper is the outer peripheral side of the optical disc 15. For convenience, the user data area YDA is divided into N sectors, the innermost side being sector 1 and the outermost side being sector N.
[0048]
In step 401 of FIG. 2, in response to a format processing request from the host, predetermined information is recorded in a partial area of the lead-in area LIA as shown in FIG. In this area, a formatting disc control block (hereinafter referred to as “FDCB”) in which a format state, a data recording state, and the like are described in a bitmap format is recorded.
[0049]
In step 403, as shown in FIG. 3C, dummy data DD is recorded in the user data area after the sector (N-256), which is an area in which AVDP as file management information is recorded.
[0050]
In step 405, the host is notified that recording and reproduction requests can be accepted.
[0051]
In step 407, it is checked whether an unrecorded portion exists in the user data area YDA. Here, since there is an unrecorded portion in the user data area YDA, the determination at step 407 is denied and the routine proceeds to step 409.
[0052]
In step 409, it is determined whether or not there is a request to eject the optical disk 15. This discharge request is notified to the CPU 40 when a disk attachment / detachment button (not shown) provided in the optical disk device 20 is pressed. The discharge request may be received via the host. Here, if there is no discharge request, the determination at step 409 is denied and the routine proceeds to step 411.
[0053]
In step 411, it is determined whether there is a recording request or a reproduction request from the host. Here, if there is no request, the determination in step 411 is denied and the process proceeds to step 413.
[0054]
In step 413, dummy data DD for 16 sectors, for example, is recorded in an unrecorded portion of the user data area YDA as shown in FIG. However, here, dummy data DD as recording data is created by the CPU 40 and stored in the buffer RAM 34 via the buffer manager 37. The address information of the area where the dummy data DD is recorded is stored in the RAM 41. When the recording of the dummy data DD is completed, the process returns to step 407.
[0055]
Thereafter, the processes and determinations of steps 407 → 409 → 411 → 413 are repeated until the determination in any of step 407, step 409, and step 411 is affirmed. Thereby, recording of the dummy data DD to the unrecorded portion proceeds.
[0056]
On the other hand, if there is a recording request or reproduction request from the host in step 411, the determination in step 411 is affirmed, and the routine proceeds to step 414.
[0057]
In step 414, the formatting process is interrupted.
[0058]
In step 415, it is determined whether the request from the host is a recording request or a reproduction request. Here, if the request from the host is a recording request, the determination at step 415 is affirmed, and the routine proceeds to step 419.
[0059]
In step 419, the user data YD sent from the host is recorded at a predetermined position in the user data area YDA as shown in FIG. The address information of the area where the user data YD is recorded is stored in the RAM 41. If there is a request from the host, AVDP is recorded in sector 256, sector (N-256), and sector N, respectively, as shown in FIG. Then, the process returns to step 407.
[0060]
On the other hand, if the request from the host is a reproduction request in step 415, the determination in step 415 is denied and the process proceeds to step 417.
[0061]
In step 417, the data recorded in the area designated by the host is reproduced as in the above-described reproduction process, and the reproduction data is output to the host. In this case, if no data is recorded in an area designated by the host, data such as all 0s may be output. Then, the process returns to step 407.
[0062]
Thereafter, until the determination in any of step 407, step 409 and step 411 is affirmed, dummy data DD is recorded in the unrecorded area as shown in FIG. 4B as an example.
[0063]
If there is a request to eject the optical disk 15 at step 409, the determination at step 409 is affirmed and the routine proceeds to step 422.
[0064]
In step 422, the formatting process is interrupted.
[0065]
In step 423, based on the address information stored in the RAM 41, the LWA is searched in the area from sector 1 to sector (N-256) in the user data area. Here, as an example, as shown in FIG. 4C, the final address of the user data on the outermost periphery is LWA. Conventionally, since AVDP is recorded in sector N, as shown in FIG. 4D as an example, the final address of AVDP recorded in sector N is LWA.
[0066]
In step 425, it is checked whether or not an unrecorded portion exists between the head address of the user data area YDA and the LWA. In this case, since there is an unrecorded portion, the determination at step 425 is denied and the routine proceeds to step 427.
[0067]
In step 427, as shown in FIG. 4E as an example, dummy data DD is recorded in an unrecorded portion.
[0068]
On the other hand, if there is no unrecorded portion in the area from the start address of the user data area YDA to LWA in step 425, the process of step 427 is skipped and the process proceeds to step 429.
[0069]
In step 429, it is checked whether AVDP is recorded in sector (N-256) or sector N. In this case, since the AVDP is recorded in the sector (N-256) and the sector N, the determination in step 429 is affirmed, and the process proceeds to step 431.
[0070]
In step 431, as shown in FIG. 5A as an example, the AVDP recorded in the sector (N-256) or the sector N is copied to a position following the LWA.
[0071]
On the other hand, if no AVDP is recorded in either sector (N-256) or sector N at step 429, the determination at step 429 is denied and the routine proceeds to step 433.
[0072]
In step 433, since dummy data is recorded in the user data area after sector (N-256) in step 403, the user after sector (N-256) is recorded regardless of whether AVDP is recorded. The fact that the data area has been recorded is registered in the FDCB. That is, the FDCB is updated.
[0073]
In step 435, as shown in FIG. 5B as an example, a TLO is recorded following the copied AVDP. However, if the determination in step 429 is negative and the AVDP has not been copied, TLO is recorded following LWA.
[0074]
In step 437, the disc insertion / ejection system (not shown) is instructed to eject the optical disc 15, and the formatting process ends.
[0075]
Before receiving the discharge request, as shown in FIG. 5C as an example, if there is no unrecorded portion in the user data area YDA, the determination is affirmed in step 407 and the process returns to step 439. Transition.
[0076]
In step 439, as shown in FIG. 5D as an example, lead-out information is recorded in the lead-out area LOA, and the formatting process of the optical disc 15 is terminated.
[0077]
Next, a case where the optical disk 15 is not a blank disk and a part of the optical disk 15 has already been formatted will be briefly described with reference to the flowchart of FIG. Note that the flowchart of FIG. 6 corresponds to a series of processing algorithms executed by the CPU 40.
[0078]
In step 501 of FIG. 6, the FDCB recorded in the lead-in area LIA of the optical disc 15 is copied to the RAM 41.
[0079]
In step 503, the TLO is searched with reference to the FDCB copied to the RAM 41. Then, the address where the TLO is recorded is set as the start address of the formatting process.
[0080]
In step 505 to step 527, processing similar to that in step 405 to step 427 is performed. In step 507, the FDCB copied to the RAM 41 is referred to. If the sector (N-256) and subsequent sectors have been recorded, the user data area before the sector (N-256) is checked for the presence of an unrecorded portion. .
[0081]
In step 529, it is determined whether or not AVDP is recorded after the sector (N-256). If not recorded, the determination here is denied and the process proceeds to step 535.
[0082]
On the other hand, if AVDP is recorded after the sector (N-256) in step 529, the determination in step 529 is affirmed, and the process proceeds to step 531.
[0083]
In step 531, the AVDP recorded in the sector (N-256) or sector N is copied to a position following the LWA.
[0084]
In step 533, the fact that AVDP is recorded after sector (N-256) is registered in FDCB. That is, the FDCB is updated.
[0085]
In step 535, the TLO is recorded following the copied AVDP. However, if the determination in step 529 is negative and AVDP has not been copied, TLO is recorded following LWA.
[0086]
In step 537, the disc insertion / ejection system (not shown) is instructed to eject the optical disc 15, and the formatting process is terminated.
[0087]
If no unrecorded portion exists in the user data area YDA before receiving the discharge request, the determination is affirmed in step 507 and the process proceeds to step 539.
[0088]
In step 539, the lead-out information is recorded in the lead-out area LOA, and the formatting process of the optical disc 15 is terminated.
[0089]
As is clear from the above description, in this embodiment, the CPU 40 constitutes initialization means, interruption means, address acquisition means, termination information recording means, temporary data recording means, recording information recording means, and specific area recording means. Has been.
[0090]
However, it goes without saying that the present invention is not limited to this. That is, the above embodiment is merely an example, and at least a part of each component realized by processing according to the program by the CPU 40 may be configured by hardware, or all the components are configured by hardware. It's also good.
[0091]
As described above, according to the optical disk apparatus according to the present embodiment, when the dummy data DD is recorded in the unrecorded portion of the user data area YDA of the optical disk 15, if there is a discharge request of the optical disk 15, the sector ( N-256) The LWA is searched for the user data area YDA excluding the areas after. Then, after recording dummy data DD in an unrecorded portion existing between the leading address of the user data area YDA and LWA, TLO is recorded, and the optical disk 15 is ejected. Therefore, the optical disk 15 can be ejected in a short time after receiving the ejection request. Conventionally, for example, when AVDP is recorded in sector N, the final address of the AVDP is LWA. As a result, dummy data DD or user data YD is stored in the entire user data area YDA. The optical disk 15 could not be ejected until recording.
[0092]
In this embodiment, when AVDP is recorded in sector (N-256) or sector N, the fact that the area has been recorded is recorded in FDCB. Thereby, when the formatting process of the taken-out optical disk 15 is resumed, it is possible to know whether AVDP is recorded in the sector (N-256) and the sector N by referring to the FDCB. It is possible to prevent the area where the AVDP is recorded from being overwritten with dummy data.
[0093]
Furthermore, in this embodiment, before permitting acceptance of recording and reproduction requests, dummy data is recorded in advance in the user data area after the sector (N-256). Thereby, when the formatting process of the taken-out optical disk 15 is restarted, the formatting process for the sector (N-256) and after can be made unnecessary. For example, the user data is set after the sector (N-256). Can be prevented from being overwritten with dummy data.
[0094]
Further, in the present embodiment, when AVDP is recorded in sector (N-256) or sector N, AVDP is copied to a position following LWA. As a result, even when the TLO is recorded on the inner circumference side of the sector (N-256), there are two AVDPs from the head address of the user data area to the TLO, and the optical disk 15 has the UDF. Can comply with the standard. Even when AVDP is recorded only in sector 256, there is no problem in use as long as AVDP can be read correctly.
[0095]
Further, in the above embodiment, the case where AVDP is recorded in three locations of sector 256, sector (N-256), and sector N has been described, but any two locations may be used. Note that AVDP may be recorded in sector 512 instead of sector 256.
[0096]
Further, in the above embodiment, when the AVDP is recorded in the sector (N-256) or the sector N, the fact that the area has been recorded is recorded in the FDCB, but after the sector (N-256) When the format process is not performed, it is not always necessary to update the FDCB.
[0097]
In the above embodiment, the dummy data is recorded in advance in the user data area after the sector (N-256) before permitting acceptance of the recording and reproduction requests. If the format process is not performed, the dummy data need not necessarily be recorded.
[0098]
Furthermore, in the above embodiment, when AVDP is recorded in sector N, AVDP is copied after LWA. However, if the optical disk 15 does not need to comply with the UDF standard, it is not necessary to copy AVDP. good.
[0099]
In the above embodiment, the case where the optical disk 15 is DVD + RW has been described. However, the present invention is not limited to this, and any rewritable information recording medium such as CD-RW may be used. FDCB is unique to DVD + RW, but data provided for similar purposes may be used instead of FDCB for information recording media other than DVD + RW. In CD-RW, ATIP (Absolute Time In Pregroove) information is used instead of ADIP information.
[0100]
The optical disk device 20 according to the above embodiment may be a so-called built-in type that is arranged in the same casing as the host, or a so-called external type that is arranged in a casing different from the host. There may be.
[0101]
【The invention's effect】
As described above, according to the information recording / reproducing apparatus of the present invention, the information recording medium can be discharged in a short time in response to the request for discharging the information recording medium during the formatting process.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an optical disc apparatus according to an embodiment of the present invention.
FIG. 2 is a flowchart for explaining background format processing according to the embodiment of the present invention;
FIGS. 3A to 3E are diagrams for explaining background format processing, respectively.
FIGS. 4A to 4E are diagrams for explaining background format processing, respectively.
FIGS. 5A to 5D are diagrams for explaining background format processing, respectively.
FIG. 6 is a flowchart for explaining format processing when restarting;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 15 ... Optical disk (information recording medium), 20 ... Optical disk apparatus (information recording / reproducing apparatus), 40 ... CPU (initialization means, interruption means, address acquisition means, termination information recording means, provisional data recording means, recording information recording means, Specific area recording means).

Claims (6)

Information recording / reproducing apparatus for recording and reproducing information on a spiral or concentric recording area of a rewritable information recording medium provided with a lead-in area, a user data area, and a lead-out area from the inner periphery toward the outer periphery Because
Initialization means for recording temporary data in an unrecorded portion in which no data is recorded in the user data area of the information recording medium;
Interruption means for interrupting the recording process in the initialization means based on the discharge request of the information recording medium during recording in the initialization means;
When the recording process in the initialization unit is interrupted, the address of the data recorded on the outermost side in the user data area is acquired except for the specific data recorded near the outer periphery of the user data area. Address acquisition means to perform;
Termination information recording means for recording termination information including temporary lead-out information following the address position obtained by the address acquisition means;
An information recording / reproducing apparatus. 2. The provisional data recording means for recording provisional data in an unrecorded portion existing between a head address of the user data area and an address obtained by the address acquisition means. The information recording / reproducing apparatus described. The user data area is divided into a plurality of sectors, and the specific data is recorded in either the sector located on the outermost periphery of the user data area or the continuous 256 sectors with the sector as the last sector. The information recording / reproducing apparatus according to claim 1 or 2, characterized in that: The information according to any one of claims 1 to 3, further comprising recording information recording means for recording information on whether or not the specific data is recorded at a predetermined position in the lead-in area. Recording / playback device. 4. The information recording / reproducing according to claim 3 , further comprising specific area recording means for recording temporary data in a sector in which the specific data is recorded prior to recording of temporary data by the initialization means. apparatus.   6. The information recording / reproducing apparatus according to claim 1, wherein the termination information includes file management information and the temporary lead-out information.

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