JP2006338771A - Recording apparatus, recording method, and optical disk recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable grasping quickly a format situation of a whole disk in an optical disk recording medium in which data can be rewritten and which has a recording layer being multi-layers. <P>SOLUTION: A formatting bit map managing parts of format/unformatted in a whole recording layer is recorded for one recording layer. Movement between layers can be made unnecessary when a format situation of the whole disk is grasped, thereby, grasping the format situation of the whole disk can be performed quickly. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a recording apparatus that performs recording on an optical disc recording medium that can rewrite data and has a plurality of recording layers, and a recording method therefor. The present invention also relates to an optical disc recording medium that can rewrite data and has a plurality of recording layers.

An optical disk recording medium is known as an optical recording medium capable of optically recording or reproducing information.
As such an optical disc recording medium, a DVD (Digital Versatile Disc) is widely used. As a DVD, a read-only DVD-ROM in which information is recorded in a combination of embossed pits and lands, a DVD-R or DVD + R that can be recorded only once by using a dye change film as a recording layer, and DVD-RW and DVD + RW are known in which data can be rewritten using a phase change film as a recording layer.

Among these, DVD + RW, which is a data rewritable disc, is a later standard than DVD-RW, which is the same rewritable disc, so that the usability of the user is improved over DVD-RW. It has become.
For example, in DVD + RW, a device is devised so as to shorten the time required for the disk formatting process.
Here, in a rewritable disc such as DVD + RW, a portion other than the user data is recorded in the data area in which the user data is to be recorded, for example, so that the data can be reproduced by a reproduction-only device. A process called so-called format is performed, which is filled with dummy data such as ALL “0” data.
In the past, formatting processing for ensuring compatibility with such playback devices was performed on the entire disk prior to user data recording. However, DVD + RW does not perform formatting processing on user data. Recording is started, thereby shortening the time to start recording. At this time, the formatting process for the remaining portion of the disk is automatically performed when the drive is in an idle state in which writing or reading is not performed. That is, the formatting process is performed in the background as described above, thereby substantially reducing the time for which the user waits, thereby improving the usability. Such a format method is called a background format.

Here, in the case of DVD + RW, the entire disk is not formatted at the time of loading as described above. Therefore, when an ejection request is made for a disk on which only a part of the data area is recorded, the disk is Formatting as a whole may not be complete.
For a recorded disc that has been partially formatted in this way, a temporary read-out is called a temporary read-out for the recording end position of user data in response to the requirement for compatibility with a playback-only device at the time of ejection. A process for adding a lead-out area is performed.
By adding a lead-out area in this way, playback on a playback-only device becomes possible. Further, since it is a temporary lead-out area, when the disc is loaded again and user data is additionally written, the temporary lead-out is erased and new user data can be additionally written.

The background format and temporary lead-out in the DVD + RW as described above will be described with reference to FIGS.
In these drawings, the area structure of the disc is shown. The lead-in area (Lead-in) is located on the innermost periphery of the disc, and the data area (user data to be recorded on the outer periphery of the lead-in area) Data Area) continues.
First, FIG. 6 shows an example in which a certain data file is recorded on the disc. When a data file is recorded on the disc, the user data UD is highly likely to be recorded in a so-called worm-eaten state in the data area as shown in the figure. That is, particularly when UDF (Universal Disc Format) is adopted, file management information is recorded as user data UD1 shown in the innermost part of the data area following the lead-in area. At this time, since the data file as actual data is not necessarily recorded in the area adjacent to the management information recording area, the user data UD1 recorded in the innermost circumference and the user as such actual data are recorded. The data UD2 is highly likely to be recorded at an interval.
A disc recorded in such a worm-eating state has an unrecorded portion in the data area and a lead-out area is not added. I can't get it.

As the background format described above, as shown in FIG. 7A, dummy data is recorded for each block BF in a predetermined recording unit from the innermost side to the outer side in the data area according to the recording order of user data. Record data.
Here, for example, as shown in FIG. 7A, a data file similar to that of FIG. 6 is displayed in a state where the background formatting is completed from the innermost periphery in the data area to the blocks BF1, BF2,. Is recorded, and user data UD1 and user data UD2 are recorded in the data area.
According to this, as shown in FIG. 7B, since the background format has already been performed, dummy data is recorded in an unrecorded portion between the user data UD1 and the user data UD2. is there. In this state, when a disc ejection request is made and compatibility with a reproduction-only device is requested, as shown in the figure, the outer end of the recording end point of the user data UD2 (the recording end point of the data area) The disc can be ejected quickly just by adding a temporary lead-out.
By performing background formatting in this way, the portion for recording dummy data at the time of ejection can be eliminated or reduced, and the waiting time of the user at the time of ejection can be reduced accordingly.

By the way, as the background format as described above, it is necessary to temporarily stop this when a write or read instruction is made to the disk. It is necessary to know which part on the disk is formatted so that the unformatted part on the disk is correctly formatted.
Also, not only in such background formatting, but also at the time of finalization or playback compatibility request before finalization, if it is not recognized in which part the formatting is completed, format the unformatted part correctly I can't.

Therefore, in the DVD + RW standard, management information called a formatting bitmap for managing the formatted / unformatted part on the disc is recorded in a predetermined area on the disc.
For example, as a formatting bitmap on the current DVD + RW disc, the data area is divided by a predetermined recording unit, and 1-bit information indicating the format / unformatted is recorded for each recording unit. That is, the formatting bitmap is an image obtained by reducing the entire data area, and the format / unformatted for each predetermined unit in the data area can be known by referring to one bit.
In the current DVD + RW, the data area is divided in units of 1 ECC block (16 sectors), and 1-bit information indicating format / unformatted is associated with each ECC block. In the case of a 12 cm disc, since the data area is 143444 ECC blocks at the maximum, information of at least 143444 bits is required as such a formatting bitmap. For practical reasons, 9 sectors (147456 bits) are allocated to the storage area of the formatting bitmap.

In addition, about the related prior art, the following patent documents can be mentioned.
JP 2003-45117 A

  By the way, as DVD + RW, a recording layer having only one recording layer has been proposed at present, but the recording layer is formed in multiple layers as already realized in other DVD-ROMs and DVD-R / DVD + R, for example. It is considered.

Here, in the case of a conventional recording layer of a single layer, the above-described formatting bitmap is stored in that layer for managing the data area in that layer.
Therefore, it is conceivable to store a formatting bit map for managing the data area of each layer for each layer in the DVD + RW in which the recording layer is made multi-layered.

However, in order to actually start formatting the disc in the recording device, it is necessary to first understand the formatting status of the entire disc from the formatting bit map.
At this time, if formatting bitmaps are distributed and stored for each layer as described above, in order to grasp the formatting status of the entire disk, a seek operation to move between the layers is required. This will cause a problem that the start of is delayed.

Therefore, in the present invention, in view of the above problems, the recording apparatus is configured as follows.
In other words, as a recording apparatus that performs recording on an optical disc recording medium that can rewrite data and has a plurality of recording layers, first, a recording unit that performs data recording on each recording layer of the recording medium is provided.
In addition, the recording means is arranged so that management information for managing the formatted / unformatted portion in the plurality of recording layers is recorded on a predetermined one of the plurality of recording layers. Recording control means for controlling was provided.

  In this way, management information for managing a formatted / unformatted portion is recorded on one recording layer in an optical disk recording medium having a plurality of recording layers, so that it is possible to move between layers when grasping the formatting status of the entire disk. Can be made unnecessary. In other words, this makes it possible to quickly grasp the formatting status of the entire disk, and as a result, the formatting can be started quickly.

Hereinafter, the best mode for carrying out the invention (hereinafter referred to as an embodiment) will be described.
FIG. 1 shows a cross-sectional structure of a disk 1 as an optical disk recording medium of the present embodiment.
The disc 1 of the present embodiment is a DVD (Digital Versatile Disc) type disc capable of rewriting data and having multiple recording layers, and specifically, a multi-layer DVD + RW disc conforming to the DVD + RW format. To do.
In the following, for convenience of explanation, it is assumed that the disc 1 is provided with only two recording layers, a first recording layer (Layer 0) and a second recording layer (Layer 1).
In this case, the two recording layers are phase change recording films, and the disc 1 has a structure in which these two recording layers are laminated at a relatively small interval.
Further, as shown in the figure, the two recording layers are layers closer to the objective lens 3a in the optical pickup 3 of the disk drive device described later, and the second recording layer is farther from the objective lens 3a. It becomes the side layer.
At the time of recording such a two-layer disc, the laser light emitted from the optical pickup 3 of the disc drive device through the objective lens 3a is narrowed down to any one of the recording layers, and a signal is recorded on the recording layer. .

FIG. 2 shows the area structure of the disk 1.
In this figure, a case where an opposite track path is adopted as the recording method of the disk 1 is illustrated.
In the case of an opposite track path, as indicated by arrows R1 and R2 in the figure, the user data is recorded in the second recording layer after recording from the inner circumference side of the first recording layer to the end of the first recording layer. Recording is performed from the outer periphery to the inner periphery.
In this case, in the first recording layer to be recorded first, a lead-in area (Lead-in) → data area (Data Area 0) → middle area (Middle Area) is formed from the inner circumference side to the outer circumference side. In the second recording layer, a middle area → data area (Data Area 1) → lead-out area (Lead-out) is formed from the outer peripheral side to the inner peripheral side.

The lead-in area is an area in which various information necessary for recording / reproduction of the disk 1, such as information indicating the medium type of the disk 1 and management information, is to be recorded.
Note that management information called a formatting bitmap is also recorded in the lead-in area on the disc 1 of the present embodiment, which will be described later.
The data area is an area where user data is to be recorded.
The middle area is added to a region on the outer peripheral side from the interlayer folded portion. This kind of middle area is provided because the read-only device reads the pits recorded on the disk board surface, so the servo cannot be read and the data cannot be read stably in areas without pits. This is because, for example, an area in which dummy data is recorded is required as an area serving as a guard for the above.
The lead-out area also has a function as a guard area, similar to the middle area, and is an area in which, for example, dummy data is recorded.

FIG. 3 is a block diagram showing an internal configuration of a disk drive apparatus as a recording apparatus of the present embodiment that performs recording corresponding to the disk 1.
The disk drive apparatus according to the present embodiment performs a format process called a so-called background format as a recording apparatus corresponding to the disk 1 which is a DVD + RW.
The background format means that the data area of the disk 1 is reproduced by a reproduction-only device in a state in which neither writing nor reading of data to the disk 1 is performed in the disk drive device (idle state). The recording of dummy data (called a format) is performed automatically so as to make it possible.
Even if the so-called finalization is not performed to format the entire disk 1 to ensure compatibility with the playback-only device, the user data is recorded when there is an eject request for compatibility with the playback-only device. A lead-out area is added to the end of the completed part, and if there is an unrecorded part of the data in the area on the inner circumference side from this end, dummy data is recorded there to reproduce it on the playback-only device. Be made possible.
Since these operations are already known, a detailed description thereof is omitted here.

  In addition to the DVD + RW disk 1, the disk drive device according to the present embodiment can record and / or support other DVD disks such as a DVD-ROM, DVD-R, DVD + R, and DVD-RW. It is configured as a so-called multi-drive that can perform reproduction.

  In FIG. 3, a disc 1 or another DVD disc (hereinafter simply referred to as a disc) is loaded on a turntable (not shown), and at a constant linear velocity (CLV) or a constant angular velocity (CAV) by a spindle motor 2 during a recording / reproducing operation. Driven by rotation. The pickup 3 reads out the data recorded on the disc in the form of emboss pits, dye change pits, or phase change pits.

In the pickup 3, a laser diode serving as a laser light source, a photodetector for detecting reflected light, an objective lens serving as an output end of the laser light, and a laser recording light are irradiated onto the disk recording surface via the objective lens. An optical system that guides the reflected light to the photodetector, a biaxial mechanism that holds the objective lens movably in the tracking direction and the focus direction, and the like are formed.
Further, the entire pickup 3 can be moved in the radial direction of the disk by the slide drive unit 4.

Reflected light information from the disc is detected by a photo detector, converted into an electrical signal corresponding to the amount of received light, and supplied to the RF amplifier 8.
The RF amplifier 8 includes a current-voltage conversion circuit, a matrix calculation / amplification circuit, and the like corresponding to output currents from a plurality of photodetectors in the pickup 3, and generates necessary signals by matrix calculation processing. For example, an RF signal as reproduction data, a focus error signal FE for servo control, a tracking error signal TE, and the like are generated.
The reproduction RF signal output from the RF amplifier 8 is supplied to the reproduction signal processing unit 9, and the focus error signal FE and the tracking error signal TE are supplied to the servo control unit 10.

The reproduction RF signal obtained by the RF amplifier 8 is subjected to binarization, PLL clock generation, decoding processing for the EFM + signal (8-16 modulation signal), error correction processing, and the like in the reproduction signal processing unit 9.
The reproduction signal processing unit 9 performs decoding processing and error correction processing using the DRAM 11. The DRAM 11 is also used as a cache for storing data obtained from the host interface 13 and transferring data to the host computer.
Then, the reproduction signal processing unit 9 accumulates the decoded data in the DRAM 11 as a cache memory.
As the reproduction output from the disk drive device, the data buffered in the DRAM 11 is read and transferred and output.

  The reproduction signal processing unit 9 extracts subcode information, ATIP information, LPP information, ADIP information, sector ID information, and the like from information obtained by EFM + demodulation and error correction for the RF signal. Is supplied to the controller 12.

The controller 12 is formed by a microcomputer, for example, and controls the entire apparatus. Particularly in this case, the background format described above is performed based on the control of the controller 12. That is, the controller 12 controls each necessary unit to execute recording of dummy data in response to detecting an idle state in which neither writing nor reading is performed on the disk 1. For example, modulation data of dummy data (for example, ALL “0” data) is generated by the modulation unit 14, and access execution control is performed on the servo control unit 10 to execute a recording operation. Further, formats other than the background format are also executed based on the control of the controller 12.
At this time, the controller 12 records the dummy data as the above format with the block BF, which is a predetermined recording unit, as the minimum unit. In this case, the minimum unit for recording dummy data is, for example, one ECC (Error Correcting Code) block (16 sectors).

The host interface 13 is connected to a host device such as an external personal computer, and communicates reproduction data and read / write commands with the host device.
That is, the reproduction data stored in the DRAM 11 is transferred and output to the host device via the host interface 13.
Also, read / write commands, recording data, and other signals from the host device are buffered in the DRAM 11 or supplied to the controller 12 via the host interface 13.

Recording to the disk is performed by supplying a write command and recording data from the host device.
At the time of data recording, the recording data buffered in the DRAM 11 is subjected to processing for recording in the modulation unit 14. That is, processing such as error correction code addition and EFM + modulation is performed.
The recording data modulated in this way is supplied to the laser modulation circuit 15. The laser modulation circuit 15 drives the semiconductor laser in the pickup 3 in accordance with the recording data, executes laser output in accordance with the recording data, and writes data on the disk.

During this recording operation, the controller 12 is controlled to irradiate the recording area of the disc with laser light from the pickup 3 with recording power.
When the disc is of a write-once type using a dye change film as a recording layer, pits due to dye change are formed by laser irradiation with recording power.
Further, in the case of a rewritable disc having a phase change recording layer like the disc 1 of the present embodiment, the crystal structure of the recording layer changes due to heating of the laser beam, and phase change pits are formed. That is, various data are recorded by changing the presence and length of pits. Further, when the portion where the pits are formed is irradiated again with laser light, the crystal state changed at the time of data recording is restored to the original state by heating, the pits disappear and the data is erased.

The servo control unit 10 receives various focus, tracking, slide, and spindle servo drives from the focus error signal FE and tracking error signal TE from the RF amplifier 8 and the spindle error signal SPE from the reproduction signal processing unit 9 or the controller 12. Generate a signal and execute servo operation.
That is, a focus drive signal and a tracking drive signal are generated according to the focus error signal FE and the tracking error signal TE, and supplied to the focus / tracking drive circuit 6. The focus / tracking drive circuit 6 drives the focus coil and tracking coil of the biaxial mechanism in the pickup 3. As a result, the pickup 3, the RF amplifier 8, the servo control unit 10, the focus / tracking drive circuit 6, the tracking servo loop and the focus servo loop by the biaxial mechanism are formed.

  When the focus servo is turned on, a focus search operation must first be executed. The focus search operation is to detect a position where an S-shaped curve of the focus error signal FE is obtained while forcibly moving the objective lens in a state where the focus servo is off. As is well known, the linear region in the S-curve of the focus error signal is a range in which the position of the objective lens can be drawn to the in-focus position by closing the focus servo loop. Therefore, the focus search operation detects the above pullable range while forcibly moving the objective lens and turns on the focus servo at that timing, so that the laser spot is kept in focus thereafter. Servo operation is realized.

In this example, the disc may have a two-layer structure as the first recording layer (Layer 0) and the second recording layer (Layer 1) as described above.
Of course, when recording / reproducing is performed on the first recording layer, the laser beam must be in focus with respect to the first recording layer. Further, when recording / reproducing is performed on the second recording layer, the laser beam must be focused on the second recording layer.
Such movement of the focus position between the first recording layer and the second recording layer is performed by a focus jump operation.
When the focus jump operation is in focus on one recording layer, the focus servo is turned off and the objective lens is forcibly moved to reach the focus pull-in range for the other recording layer (the S-shaped curve is This is executed by turning on the focus servo at the time of observation).

  The servo control unit 10 further supplies a spindle drive signal generated according to the spindle error signal SPE to the spindle motor drive circuit 7. The spindle motor drive circuit 7 applies, for example, a three-phase drive signal to the spindle motor 2 in accordance with the spindle drive signal, and causes the spindle motor 2 to rotate. The servo control unit 10 also generates a spindle drive signal in response to a spindle kick / brake control signal from the controller 12, and causes the spindle motor drive circuit 7 to perform operations such as starting, stopping, accelerating and decelerating the spindle motor 2.

  The servo control unit 10 generates a slide drive signal based on, for example, a slide error signal obtained as a low frequency component of the tracking error signal TE, an access execution control from the controller 12, and supplies the slide drive signal to the slide drive circuit 5. The slide drive circuit 5 drives the slide drive unit 4 according to the slide drive signal. Although not shown in the figure, the slide drive unit 4 has a mechanism including a main shaft that holds the pickup 3, a thread motor, a transmission gear, and the like, and the slide drive circuit 5 drives the slide drive unit 4 in response to a slide drive signal. The required slide movement of the pickup 3 is performed.

Here, the case where the disk drive device is configured as an external drive device of a host device (information processing device) such as a personal computer is exemplified, but it goes without saying that a disk built in such an information processing device is used. It can also be configured as a drive device.
Here, the optical disk drive apparatus is only compatible with DVD-type disks, but may be configured to support other optical disk recording media such as a CD (Compact Disc).

Here, as described above, the background format is performed on the disk 1 of the present embodiment. As this background format, when a write or read instruction is made to the disk 1, the background format is performed. It is necessary to stop this, so when the idle format is started again and the background formatting is started, any part on the disk 1 has been formatted so that the unformatted part on the disk is correctly formatted. It is necessary to know whether there is.
Also, not only in such background formatting, but also at the time of finalization or playback compatibility request before finalization, if it is not recognized in which part the formatting is completed, format the unformatted part correctly I can't.

Therefore, management information called a formatting bit map for managing the formatted / unformatted portion on the disk is recorded on the disk 1 of the present embodiment.
This formatting bit map is management information in which a data area is divided by a predetermined recording unit and 1-bit information indicating format / unformatted is recorded in correspondence with each recording unit. In this case, as described above, since the minimum recording unit of the disk 1 is one ECC block, information corresponding to one ECC block in the data area is represented by 1 bit accordingly.
In this formatting bitmap, for example, “0” is treated as being formatted and “1” is treated as being unformatted.

By the way, as described above, such a formatting bitmap is also used in a DVD + RW having only one recording layer.
In the conventional DVD + RW, the formatting bitmap is recorded in that layer for managing the format status in that layer.
Therefore, even with the disc 1 of this example in which the recording layers are multilayered, the formatting bit map indicating the format status in each layer is recorded on each layer following the method adopted in the current DVD + RW. Can be considered.

  However, by providing a formatting bitmap for each recording layer for each layer in this way, it is possible to grasp the formatting status of the entire disc prior to formatting with the disc drive device. Since it is necessary to confirm the format status of all recording layers by moving, there is a problem that the start of formatting is delayed accordingly.

Therefore, in the present embodiment, a formatting bit map for managing the formatted / unformatted portions in all the recording layers is recorded on one predetermined recording layer on the disc 1.
FIG. 4 shows an example of the data structure of the disk 1 as this embodiment.
As shown in this figure, the formatting bitmap (Formatting Bitmap) is recorded in a predetermined area in an FDCB (Formatting Disc Control Block) in an area called an Inner Disc Identification Zone in the lead-in area. Yes.
In the conventional DVD + RW with one recording layer, only one FDCB is used. In this case, two FDCBs are provided according to the number of recording layers. That is, in this case, in the Inner Disc Identification Zone, there are FDCB (Formatting Disc Control Block for Data Area 0) in which management information about the data area of the first recording layer is recorded and management information about the data area of the second recording layer. Two FDCBs are separately provided by FDCB (Formatting Disc Control Block for Data Area 1) to be recorded.
Here, an example is shown in which two FDCBs are recorded adjacently, but these FDCBs may be recorded at least in the inner disc identification zone.
Then, for a predetermined area in the FDCB separately provided according to the number of recording layers as described above, a formatting bitmap (formatting bitmap) for managing the formatted / unformatted portion in the data area of the first recording layer, respectively. for Data Area0) and a formatting bitmap (Data Formatting Bitmap for Data Area1) for managing the formatted / unformatted portion in the data area of the second recording layer.
That is, as shown in the figure, “Formatting Bitmap for Data Area 0” is recorded in a predetermined area in “FDCB for Data Area 0” in which management information about the data area of the first recording layer is recorded, and the second recording layer “Formatting Bitmap for Data Area 1” is recorded for a predetermined area in “FDCB for Data Area 1” in which management information about the data area is recorded.

As shown in FIG. 4, for the disc 1 in this case, a plurality of formatting bitmaps for separately managing the format / unformatted portion in each recording layer are provided for a predetermined recording layer. To be recorded. That is, according to such a recording form, management information for managing the formatted / unformatted portions in all the recording layers on the disc 1 is centrally provided in one recording layer. In order to grasp the format status, a seek operation for moving between the recording layers can be made unnecessary.
That is, the format status can be quickly grasped accordingly.

Here, in the disc 1 of this example in which formatting bitmaps in all the recording layers are concentrated on one recording layer as described above, it is possible to eliminate the movement between layers before the start of formatting. If the subsequent format is performed on a recording layer that is not provided with a formatting bitmap, it is needless to say that movement between layers is necessary. Further, since it is necessary to update the contents of the formatting bitmap after formatting, in this case, it is necessary to move to the recording layer where the formatting bitmap is provided even after formatting in the recording layer.
On the other hand, if we consider the case where recording bitmaps are distributed and recorded for each recording layer following the conventional method, this case also starts after the recording layer that finally confirmed the format status. If the format to be recorded is different from the target recording layer, it is necessary to move between layers, but it is not necessary to move between layers in order to update the bitmap after formatting in each layer. There are benefits.
However, even in the case of the present embodiment, when the formatting is performed in the recording layer in which the formatting bitmap is provided, the interlayer movement for updating can be made unnecessary. Furthermore, as described above, in this example, it is not necessary to move between layers for grasping the format status before starting formatting. Can be reduced. In other words, it is possible to perform efficient management accordingly.

By the way, the information (Inner Disc Identification Zone, FDCB, Formatting Bitmap) in the lead-in area as shown in FIG. 4 is recorded in the disc drive device as a recording device by the disc 1 which is an unrecorded disc (blank disc). This information is recorded when the disk 1 is initialized in accordance with, for example, loading or a request for initialization of the disk 1 from the host device side. That is, the data structure of the disk 1 as shown in FIG. 4 is realized by the disk drive device shown in FIG.
In order to realize such a data structure of the disk 1 according to the present embodiment, the controller 12 shown in FIG. 3 performs an initialization request from the host device when the loaded disk 1 is a blank disk. For example, the recording operation is executed so that data having the structure shown in FIG. 4 is stored in the lead-in area of the disc 1 in response to the disc 1 being in a state to be initialized.
That is, in the inner disc identification zone in the lead-in area, the formatting bitmap for the first recording layer (Formatting Bitmap) for each of the predetermined areas in the FDCB for the first recording layer and the FDCB for the second recording layer. for Data Area0), and the recording operation is executed so that the formatting bitmap (Formatting Bitmap for Data Area1) for the second recording layer is stored.
In this case, as described above, since “1” is recorded for the unformatted portion in the formatting bitmap, the controller 12 accordingly stores the area in which each formatting bitmap is to be stored. The recording operation is executed so that all become “1”.
In this initialization operation, for example, a value to be recorded is stored in advance in the controller 12 according to the initialization, and recording of the value is instructed when the disk 1 is in a state to be initialized. This can be achieved.

Here, in the description so far, the formatting / unformatted part for each recording layer is managed separately as an example of recording formatting bitmaps for all the recording layers with respect to a predetermined recording layer on the disc 1. In the above example, a plurality of formatting bitmaps are recorded on one recording layer. Instead, for example, a modification as shown in FIG. 5 may be used.
In the previous example of FIG. 4, a separate FDCB is provided for each layer, and the formatting bitmap for managing each layer separately is stored therein. However, in the modification shown in FIG. A single FDCB that manages all recording layers is provided as a formatting bitmap that is stored in the FDCB according to the FDCB. is there.
Specifically, in this case, one FDCB (FDCB for Data Area 0 & Data Area 1) managed for the first recording layer and the second recording layer is recorded in a predetermined area in the Inner Disc Identification Zone. In this predetermined area, one formatting bit map (Formatting Bitmap for Data Area 0 & Data Area 1) for managing the formatted / unformatted portion in the data area in the first recording layer and the data area in the second recording layer is recorded. .

Also according to such a modification, the formatting bit map is recorded only on one recording layer, so that the formatting status of the entire disc 1 can be quickly grasped, whereby the formatting can be started quickly.
Further, in this case, since the formatting bitmap for the entire disk 1 is stored in one continuous area, in the case of FIG. 4 described above, the operation that requires a seek operation between the formatting bitmaps is omitted. Thus, the format status of the entire disk 1 can be grasped more quickly.

Here, the present invention should not be limited to the embodiments described above.
For example, in the embodiment, the case where the recording layer of the disc 1 is two layers has been illustrated, but in the case of three or more layers, the format / unformatted part in all the recording layers is similarly applied to a predetermined recording layer. The same effect can be obtained by recording a formatting bitmap for managing the above.

  In the present embodiment, the case where the disc 1 employs an opposite track path has been described as an example. However, even in the case of a parallel path disc in which the recording direction is the same in each recording layer, a predetermined one recording is similarly performed. A similar effect can be obtained by recording a formatting bit map for managing the formatted / unformatted portions in all the recording layers for each layer.

  In addition, the case where recording is performed on the innermost peripheral portion as the lead-in area is exemplified as the formatting bit map. However, the formatting bitmap may be recorded on a predetermined portion of a predetermined recording layer, such as being provided on the outermost peripheral portion. .

  Further, the case where the disk 1 is DVD + RW is exemplified, but other rewritable disks such as a DVD-RW and a CD-RW, and similarly a disk with a specification for recording dummy data as a format, The present invention can be suitably applied.

It is sectional drawing which showed the cross-section of the optical disk recording medium of this Embodiment. It is the figure which showed the area structure of the optical disk recording medium of this Embodiment. 2 is a block diagram illustrating an internal configuration of the recording apparatus according to the present embodiment. FIG. It is the figure which showed especially the data structure in a lead-in area as a data structure of the optical disk recording medium of this Embodiment. It is the figure shown about the data structure of the optical disk recording medium as a modification of embodiment. It is the figure which showed the state by which user data was recorded with respect to the disc. It is a figure for demonstrating a background format and temporary lead-out.

Explanation of symbols

1 disk, 2 spindle motor, 3 optical pickup, 8 RF amplifier, 9 reproduction signal processing unit, 10 servo control unit, 11 DRAM, 12 controller, 13 host interface, 14 modulation unit, 15 laser modulation circuit

Claims (5)

As a recording apparatus for recording on an optical disc recording medium capable of rewriting data and having a plurality of recording layers,
Recording means for recording data on each recording layer of the recording medium;
Recording control for controlling the recording means so that management information for managing the formatted / unformatted portions in the plurality of recording layers is recorded for a predetermined one of the plurality of recording layers. Means,
A recording apparatus comprising: The recording control means includes
Control so that a plurality of management information for individually managing the formatted / unformatted part is recorded for each recording layer.
The recording apparatus according to claim 1. The recording control means includes
Control is performed so that one piece of management information for managing the formatted / unformatted portion is recorded for the whole of the plurality of recording layers.
The recording apparatus according to claim 1. As a recording method of a recording apparatus for recording on an optical disk recording medium capable of rewriting data and having a plurality of recording layers,
Management information for managing the format / unformatted portion in the plurality of recording layers is recorded on a predetermined one of the plurality of recording layers.
And a recording method. An optical disc recording medium capable of rewriting data and having a plurality of recording layers,
Management information for managing a formatted / unformatted portion in the plurality of recording layers is recorded for a predetermined one of the plurality of recording layers.
An optical disc recording medium characterized by the above.

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