CN100412977C - Optical information recording method, optical information recording device, information processing device - Google Patents

Abstract

An optical disc (51) has recording layers (52, 53) having a double-layer structure, and has data areas (54, 55) in which information can be recorded on each recording layer (52, 53). The optical information recording device divides the two data areas (54, 55) of the double-layer recording layer (52, 53) of the optical disc (51) into a plurality of divided areas as a continuous single data area (56), for example, Either in segments or in segments. In this optical information recording device, data is recorded in each sector or segment as the divided area.

Description

Optical information recording method, optical information recording device, information processing device

technical field

The present invention relates to an optical information recording method and an optical information recording device for recording data in each data area of an optical information recording medium having a plurality of recording layers and having a data area where information can be recorded on each recording layer, including the optical information An information processing device of a recording device, an optical information recording medium having a plurality of recording layers and a data area where information can be recorded on each recording layer, and causing a computer of the optical information recording device to execute each A program for recording data in the data area, and a recording medium on which the program is recorded.

Background technique

Japanese Patent Laid-Open No. 2001-126255 discloses an information recording device. When recording an information recording medium having a plurality of recording layers, recording starts from the recording layer relatively far from the light input side to avoid recording data. decline in quality.

DVD+R is a recording type disc of DVD, and its physical characteristics are close to those of DVD-ROM discs, and it is an optical disc excellent in compatibility with DVD-ROM drives. DVD+R is a write-once medium that cannot rewrite data, and requires continuous data recording.

In addition, in order for the DVD-ROM drive to read data added in units of files, generally the area for recording file information is reserved at the beginning of a session (session), and the file information for recording data is stored in the reserved area at the end of a session. Make a note.

As mentioned above, DVD+R data recording needs to be continuously recorded from the inner periphery of the disc, but recording can be performed by dividing the recording area into multiple tracks (called fragments in DVD+R). The leading area of the session is recorded later.

In addition, even when the extent ends, by adding a new extent, data after the end of the extent can be added. In this way, a multi-track, multi-session recording method is adopted in DVD+R.

Recently, research and development of high-speed and large-capacity recording discs such as DVD+R have been widely carried out. As one of the means, a recording system that is compatible with single-sided, double-layer playback-only DVD discs has been proposed. The DVD+R disc is a single-sided and double-layer DVD+R disc (hereinafter referred to as a dual-layer DVD+R).

The storage capacity of the dual-layer DVD+R is 8.4Gbyte, which is about twice the storage capacity of the conventional DVD+R with one recording layer, which is 4.7Gbyte. In addition, data recorded on a dual-layer DVD+R can be read by a DVD player or DVD-ROM drive capable of reproducing a single-sided, double-layer playback-only DVD disc.

The logical addresses in the dual-layer DVD+R are allocated consecutively from the start address of the data area of the recording layer of the first layer, and the logical addresses from the end address of the data area of the first layer to the start address of the data area of the second layer are continuous. Thus, in recording to a dual-layer DVD+R, the user can perform recording without realizing that the recording layer is divided into two layers.

Here, in DVD+R, the data area is divided into a plurality of divided areas, that is, segments or sectors, and recorded. When dividing these data areas, it is necessary to perform the division without making the user aware that the recording layer is divided into two layers.

For example, when dividing a data area in units of segments, a general user performs the division by designating a segment size. At this time, the incomplete fragment (IncompleteFragment), which is the last fragment in the data area, is divided into a reserved fragment (Reserved Fragment) of a specified size and a new incomplete fragment.

Here, in the case where the start address of the last segment is within the data area of the recording layer of the first layer, the case where the reserved segment exceeds the data area of the recording layer of the first layer is considered according to the specified data size, but due to the The data area of the first recording layer is fixed, so data cannot be recorded beyond the range of the data area of the first recording layer.

However, restricting such segment division requires the user to manage the range of the data area in each recording layer, which is not ideal in terms of user convenience.

Therefore, as a single data area in which the data areas of the two recording layers are continuous, if divisions such as segments and sectors can be performed across the two recording layers, division recording in units of segments and sectors and the like can be performed without Make users aware of multiple record layers.

Also, in DVD+R, the lead-in area in the session after the second session is called the lead-in area (Intro), and the lead-out area in the session before the last session is called the end area (Closure). The lead-in area and end area are data having user data attributes, and are recorded in a predetermined recording format.

Generally, when recording data on a DVD+R, data is recorded in the form of a file. At this time, file management information for managing user data information is recorded in a file management area prepared separately from the area for recording user data entities.

This file management information is generally recorded in a predetermined area within a session (for example, 16 sectors from the top of the user data area). In the case of appending a session in multi-session recording, the file management information is updated and recorded in a predetermined area of a new session.

That is, there are file management information related to the entity of the user data recorded in the session included in the file management information in the session, and the file management information related to the entity of the user data recorded in the session before the session. management information.

Therefore, in order to read a file recorded on a multi-session DVD+R, it is necessary to specify the start address of the final session.

If it is a drive compatible with multi-session DVD+R, the drive itself detects multi-session information (for example, the start address and end address of each session), and can notify the user of the information of the last session. Even with an existing DVD-ROM drive that does not support multisession DVD+R, the user can acquire the information of the final session by using specific driver software (such driver software is called a multisession drive).

That is, in such a multi-session drive, the start address of the next session is determined from the user data size of the first session, the end area size of the session, and the lead-in area size of the next session, and the next session is played back. A predetermined position in the lead-in area of a segment is obtained, and the size of the next segment is obtained from the segment information recorded in this area.

Through this session detection process, the sessions that exist on the disc are sequentially followed, so that the final session can be detected. This process can be realized by the fact that the lead-in area and the end area have user data attributes (recognized as user data by existing DVD-ROM drives), and the sizes of the lead-in area and the end area are fixed.

In addition, in such a dual-layer DVD+R, etc., as described above, when the data areas of the two recording layers are divided into sectors as a continuous single data area, the lead-in area or the end area may overlap. Two record layers. Even in such a case, in order to identify the final session by a drive not compatible with the multi-session DVD+R and a multi-session drive, it is necessary to divide and record the lead-in area and the end area in the data area.

Contents of the invention

The present invention was made in view of the above-mentioned problems, and its object is to provide an optical information recording method that can span multiple recording layers for an optical information recording medium having a plurality of recording layers and having a data area where information can be recorded on each recording layer. Layers are used to perform split recording in units of segments or segments, without making the user aware of multiple recording layers.

In order to solve the above-mentioned problems, the first aspect of the present invention is an optical information recording method for recording data on an optical information recording medium having a plurality of recording layers and having a data area where information can be recorded on each recording layer, wherein It is characterized by comprising: a dividing step of dividing at least two data areas in the data areas of the plurality of recording layers into a plurality of divided areas as a continuous single data area; and a recording step of dividing the data areas in each divided area performing data recording, wherein the recording step sets a user data area for recording user data in the divided area, and divides the user data area when the user data area spans the two data areas The recording is performed by setting each divided part in each of the data areas, and the step of recording is to set the recording first predetermined data arranged in front of the user data area in the divided area. At least one of the first specified area of the , and the second specified area configured behind to record the second specified data, when the first or second specified area spans the two data areas, the first or The second predetermined area is divided into two, and the recording is performed by setting each divided part in the data area.

In order to solve the above-mentioned problems, a second aspect of the present invention is an optical information recording apparatus for recording data on an optical information recording medium having a plurality of recording layers and having a data area where information can be recorded on each recording layer, wherein It is characterized in that it includes: dividing means for dividing at least two data areas in the data areas of the plurality of recording layers into a plurality of divided areas as a continuous single data area; recording data respectively, wherein the recording means sets a user data area for recording user data in the divided area, and when the user data area spans two data areas, divides the user data area into two performing the recording by setting each divided portion in the data area, and the recording means sets a first specification for recording first specified data arranged in front of the user data area in the divided area. area, and at least one of the second prescribed area for recording second prescribed data disposed behind, when the first or second prescribed area straddles the two data areas, the first or second prescribed area It is divided into two, and each division is set in the data area to perform the recording.

In order to solve the above-mentioned problems, the third aspect of the present invention is an information processing device, including an optical information recording device, for an optical information recording medium having a plurality of recording layers and having a data area where information can be recorded on each recording layer. The recording of data is characterized in that it includes: dividing means for dividing at least two data areas in the data areas of the plurality of recording layers into a plurality of divided areas as a continuous single data area; and recording means , recording data in each divided area, wherein the recording component sets a user data area for recording user data in the divided area, and when the user data area spans two data areas, the user data The area is divided into two, each division is set in the data area to perform the recording, and the recording means sets a recording first specification arranged in front of the user data area in the division area. At least one of the first predetermined area for data and the second predetermined area for recording second predetermined data arranged behind, when the first or second predetermined area straddles the two data areas, the first Alternatively, the second predetermined area is divided into two, and the recording is performed by setting each divided part in the data area.

In order to solve the above-mentioned problems, a fourth aspect of the present invention is an optical information recording medium having a plurality of recording layers and having a data area where information can be recorded on each recording layer, wherein the plurality of recording layers are At least two of the data areas in the data area are divided into a plurality of divided areas as a continuous single data area, and data is recorded in each divided area.

In order to solve the above-mentioned problems, a fifth aspect of the present invention is a program executed by a computer that controls an optical information recording device having a plurality of recording layers and recording media recording the program. Recording information on an optical information recording medium having data areas in which information can be recorded on the recording layer, wherein the optical information recording device executes a step of dividing the data areas of the plurality of recording layers into The at least two data areas are divided into a plurality of divided areas as a continuous single data area; and the recording step is to respectively record data in each divided area.

According to the optical information recording method of the present invention, since the division of divisional areas such as segments and segments can be performed in the form of spanning multiple recording layers, it can be performed in divisional areas such as segment units or segment units. Recording of data without making the user aware of multiple recording layers.

In the optical information recording method of the present invention, since the division of division areas such as segments and segments can be carried out in the form of spanning multiple recording layers, it is possible to divide the division areas in units of segments or segments, etc. Divisional recording of user data is performed without making the user aware of multiple recording layers.

In the optical information recording method of the present invention, even if a plurality of recording layers are spanned in the first or second predetermined area, the predetermined area is divided into data areas and recorded, so it is guaranteed to record predetermined data in the data area. The size of the first or second specified area. Thus, even in the case of detecting the final sector using a multi-session drive, the position of the final sector can be correctly detected.

In the optical information recording method of the present invention, even if the lead-in area or the lead-out area spans a plurality of recording layers, the lead-in area or the lead-out area is also divided into data areas and recorded, so it is guaranteed to record a specified data size in the data area. lead-in or lead-out area. Thus, even in the case of detecting the final sector using a multi-session drive, the position of the final sector can be correctly detected.

In the optical information recording method of the present invention, even if the lead-in area or the end area spans a plurality of recording layers, the lead-in area or the end area is also divided into data areas and recorded, so it is guaranteed to record the specified data size in the data area. lead-in or lead-out area. Thus, even in the case of detecting the final sector using a multi-session drive, the position of the final sector can be correctly detected.

In the optical information recording method of the present invention, there is a third predetermined area that does not belong to any area between adjacent divided areas. Even if the third predetermined area spans a plurality of recording layers, the third predetermined area is Since the division is recorded as a data area, it is guaranteed to record a third predetermined area of a predetermined size in the data area. Therefore, even in a system in which the start address of the user data area is specified based on the data size of the third predetermined area, the start address of the user data area can be appropriately obtained.

Other objects, features, and advantages of the present invention will become apparent by understanding the following detailed description of the invention with reference to the accompanying drawings.

Description of drawings

FIG. 1 is a block diagram showing the configuration of an optical information recording and reproducing apparatus according to an embodiment of the present invention.

2A, 2B, and 2C are diagrams for explaining the layout of a conventional playback-only DVD disc.

3A, 3B, and 3C are diagrams for explaining division of segments in an optical disc according to an embodiment of the present invention.

FIG. 4 is a diagram showing the format of a segment disk control block (SDCB).

Fig. 5 is a diagram showing the format of a segment item.

Fig. 6 is a diagram showing the format of a previous section entry.

7A and 7B are diagrams for explaining the layout of a dual-layer DVD+R optical disc.

8A, 8B, and 8C are diagrams for explaining sector division in the optical information recording and reproducing apparatus according to one embodiment of the present invention.

9A, 9B, 9C, and 9D are diagrams for explaining segment division in the optical information recording and reproducing apparatus according to one embodiment of the present invention.

10 is a flowchart for explaining an optical information recording method according to an embodiment of the present invention that executes the optical information recording and reproducing apparatus of FIG. 1 .

11 is a flowchart for explaining an example of processing when the optical information recording and reproducing apparatus of FIG. 1 performs data recording in units of sectors.

12 is a flowchart for explaining an example of processing when the optical information recording and reproducing apparatus of FIG. 1 performs data recording in units of segments.

13 is a block diagram showing the configuration of an information processing device according to an embodiment of the present invention including the optical information recording and reproducing device shown in FIG. 1 .

Detailed ways

FIG. 1 is a block diagram showing the configuration of an optical information recording and reproducing apparatus according to an embodiment of the present invention.

As shown in FIG. 1 , the optical information recording and reproducing apparatus 1 of this embodiment is an apparatus that performs information recording and reproducing operations on an optical disc 51 . Optical information recording and playback device 1 comprises: motor 2, rotates and drives optical disc 51; Optical pick-up 3, irradiates laser light 4 to optical disc 51; movement; and a control system, which controls these various parts.

As a control system, the optical information recording and reproducing device 1 is composed of a microcomputer, includes a controller 6 that centrally controls each part, and includes a rotation control system 7 controlled by the controller 6, a pick-up control system 8, and a rough adjustment motor. Control system 9, and signal processing system 10.

The rotation control system 7 controls the action of the motor 2 that rotates and drives the optical disc 51 . The pickup control system 8 controls the operation of the optical pickup 3 that irradiates the optical disk 51 with the laser light 4 . The coarse motor control system 9 controls the operation of the coarse motor 5 that moves the optical pickup 3 in the radial direction of the optical disc 51 .

In the signal processing system 10 , the laser light 4 irradiated from the optical pickup 3 controlled by the pickup control system 8 and reflected by the optical disc 51 is received by a light receiving element (not shown), and the received light signal is processed. The signal processing system 10 stores data read from the optical disc 51 in the cache memory 11 .

The controller 6 transfers the data accumulated in the cache memory 11 to the host device 13 connected via the external interface 12 .

2A, 2B, and 2C are diagrams for explaining the design of a conventional playback-only DVD disc.

FIG. 2A is a single-sided single-layer (Single Layer) disc (hereinafter referred to as a single-layer disc) 101, and FIG. 2B is a single-sided double-layer disc in a parallel track path (hereinafter referred to as PTP mode). (hereinafter referred to as PTP disk) 201, FIG. 2C is a single-sided double-layer disk (hereinafter referred to as OTP disk) 301 of the Opposite Track Path (hereinafter referred to as OTP method).

Any DVD disc 101, 201, 301 has an information area (Information Area) composed of a lead-in area, a data area, and a lead-out area. In the case of a single-layer disc 101 and a PTP disc 201, each recording layer has an information area. . In the case of the PTP disc 201, information areas are respectively provided on layer 0 (Layer0) and layer 1 (Layer1) (reference numerals 202, 203).

The OTP disk 301 is composed of one information area, and each recording layer 302, 303 has a middle area (Middle Area) behind the data area (peripheral direction). The single-layer disc 101 and the PTP disc 201, and layer 0 of the OTP disc 301 reproduce data from the inner periphery to the outer periphery of the disc, and layer 1 of the OTP disc 301 reproduces data from the outer periphery to the inner periphery.

Continuous physical addresses (Physical Sector Numbers) are assigned to the recording layers 202 and 203 of the single-layer disc 101 and the PTP data 201 from the lead-in area to the lead-out area.

On the other hand, in the case of the OTP disc 301, continuous physical addresses are allocated from the lead-in area to the middle area of layer 0, but the physical address of the first layer is allocated in which the physical address of layer 0 is bit-reversed (bit-reversed). address, the physical address increases from the middle area to the export area.

As shown in FIG. 2B , the start and end addresses of the lead-in area, the start address of the data area, and the end address of the lead-out area in the PTP disk 201 are located at the same radial position. The start address of the lead-out area (that is, the end address of the data area) may be different for each recording layer 202 , 203 . When the end addresses of the data areas are different, the lead-out area is recorded in the area of the difference.

On the other hand, as shown in FIG. 2C, in the case of an OTP disc 301, the start address of the lead-in area and the end address of the lead-out area, the end address of the data area of layer 0 and the start address of the data area of layer 1, and the The start and end addresses of the middle areas of 302 and 303 are at the same radius position. The start address of the data area of layer 0 and the end address of the data area of layer 1 do not have to match. In the case of the OTP disc 301, a lead-out area is recorded in the differential area.

3A , 3B, and 3C are diagrams for explaining division of segments in an optical disc of an optical information recording medium according to an embodiment of the present invention. The disc is a DVD+R disc.

As the state of a fragment (Fragment), a reserved fragment (Reserved Fragment) and an incomplete fragment (Incomplete Fragment) are defined.

A reserved segment is a segment whose start address and end address of the segment are determined. These pieces of information are registered in the segment item (FragmentItem) in the session disc control block (Session Disc Control Block (SDCB)) described later.

An incomplete segment is a segment in which only the start address of the segment is determined. The end address of the data area is temporarily given as the end address of the segment. In the case of dividing the data area into a plurality of segments, the incomplete segment is divided to generate a reserved segment and an incomplete segment.

FIG. 3A shows the state of the segments already existing on the optical disc 51 before segment division is performed. Here, one reserved segment N and an incomplete segment (N+1) exist in an open session (Open Session) K in which data recording has not been completed.

In DVD+R, when recording data from the user, it is necessary to perform additional writing from the unrecorded area in each session.

As shown in FIG. 3B , in the case of dividing the data area in units of segments, the incomplete segment (N+1) is divided into a reserved segment (N+1) and a new incomplete segment (N+2).

The start address of the reserved segment (N+1) is the same as the start address of the incomplete segment (N+1), and the size of the reserved segment (N+1) must be larger than the recorded area size of the incomplete segment (N+1) .

By dividing in units of segments, information of reserved segments (N+1) is newly registered in the SDCB. When the contents of the SDCB are updated, the SDCB is added to a predetermined area within the lead-in area (Intro). Also, an insert (Run-in) block and a new incomplete segment (N+2) are generated after the reserved segment (N+1). This insertion block is recorded when data is recorded in the incomplete segment (N+2).

FIG. 3C shows the case where the data area is divided into a plurality of extents. When the data area is divided into extents, the open extent K is divided into the extent K in which data recording has been completed and a new open extent (K+1).

At this point, at least the data recording in the segment needs to be completed. That is, it is possible to end the section by recording the area in the reserved section among the sections existing in the open section K, and specifying the end address of the incomplete section. When the end address of the incomplete segment (N+2) is specified, the information of the segment (N+2) is also registered in the SDCB.

Here, when the recording of the open extent K is completed, the unrecorded area in the lead-in area is recorded with predetermined data, and the end area is recorded next to segment (N+2). The lead-in area and the end area are areas having data attributes. When no new extent is recorded after the open extent K, a lead-out area is recorded instead of the end area.

FIG. 4 is a diagram showing the format of a segment disk control block (SDCB).

As shown in FIG. 4 , there are multiple session items (SessionItem) composed of 16-byte data in the SDCB. There are two types of the segment item: a segment item (Fragment Item) indicating segment information in the segment and a previous segment item (Previous Session Item) indicating segment information before the segment.

Fig. 5 is a diagram showing the format of a segment item. A fragment item descriptor (Fragment item descriptor) is ID information indicating that the record information represents a fragment item, and is recorded in "FRG". Fragment number indicates the segment number, and Fragment start address and Fragment end address indicate the start address and end address of each segment.

As mentioned above, only reserved segment information is registered in the SDCB. Thereby, under the situation of Fig. 3 A, there is only the segment item that represents the information of segment N in the SDCB, under the situation of Fig. 3B, there are two segment items representing the information of segment N, segment (N+1), in Fig. In the case of 3C, there are three types of segment items representing information of segment N to (N+2).

Fig. 6 is a diagram showing the format of the previous section entry. The previous session descriptor (Previous session descriptor) is ID information indicating that the record information represents the previous session item, and is recorded in "PRS".

The previous session number (Previous session number) indicates the session number, and the previous session start address (Previous session start address) and the previous session end address (Precious session end address) indicate the start address and end address of each session.

In the SDCB, all the section information before the section is registered as the previous section item. In the example of Fig. 3A-Fig. 3C, there is (K- 1) Kind of previous block item.

7A and 7B are diagrams for explaining the design of the optical disc 51 of the dual-layer DVD+R.

The optical disc 51 in FIG. 7A has a plurality of recording layers (in this example, two-layer recording layers 52, 53), and information can be recorded on each recording layer 52, 53, respectively. Hereinafter, as the optical disc 51, an OTP-based dual-layer DVD+R will be described as an example.

The optical disc 51 in FIG. 7A shows the structure of a dual-layer DVD+R in an unrecorded state. On layer 0, there are lead-in area (Lead-in Area), data area (Data Area), and middle area (Middle Area) from the inner periphery of optical disc 51, and on layer 1, there are middle area and data area from the outer periphery of optical disc 51. , Lead-out Area.

In these areas, physical addresses are assigned in the same manner as in the playback-only dual-layer DVD-ROM (FIG. 2C). That is, the start address of the data area of layer 0 is physical address 30000H, and the value of the physical address continuously increases from the lead-in area of layer 0 to the middle area of layer 0 .

In addition, the start address of the data area of layer 1 is assigned an address in which the end address of the data area of layer 0 is bit-inverted, and based on the start address of the data area, it continuously increases from the middle area to the lead-out area.

On the other hand, the logical address designated by the user at the time of data recording is assigned logical address 0h based on the start address 30000h of the data area of layer 0 . The values of subsequent logical addresses increase continuously in the data area of layer 0.

The logical address of the end position of the data area of layer 0 is continuous with the logical address of the start position of the data area of layer 1, and thereafter continuously increases in the data area of layer 1.

FIG. 7B shows the structure of the data area of the optical disc 51 when the user performs data recording with the optical information recording and reproducing apparatus 1 .

That is, the logical addresses used during data recording are continuous across the two recording layers 52, 53, so the data areas 54, 55 in the two recording layers 52, 53, as shown in FIG. 7B, are regarded as approximately continuous single data areas. 56 treatments.

When the user performs data recording on the optical disc 51, the approximately continuous single data area 56 is divided into a plurality of divided areas (that is, divided areas in units of segments or in units of sectors), and user data is stored. Record. This segment-by-segment or section-by-segment division is performed using the method described above.

8A, 8B, and 8C are diagrams for explaining sector division in the optical information recording and reproducing apparatus 1 according to one embodiment of the present invention.

A session in DVD+R consists of a lead-in area, a user data area (User Data Area), and a lead-out area. In the case of configuring multiple sessions in DVD+R, a lead-in area having user data attributes is recorded in the second and subsequent sessions instead of the lead-in area. Furthermore, in the sector preceding the final sector, an end area having a user data attribute is recorded instead of the lead-out area.

The example in FIG. 8A shows a state in which only one session in which data recording is completed exists on layer 0 . As shown in FIG. 8A, the first section ends with an end zone. Since a new extent can be added to the optical disc 51, the unrecorded area of the second and subsequent extents is treated as an open extent 2 . The end address of the user data area of sector 2 is temporarily assigned the end address of the data area of layer 1 .

The example in FIG. 8B shows a state in which the user data area straddles the recording layers 52 and 53 by newly dividing the open sector 2 into two sectors. As mentioned above, in the sector division in this case, after recording the unrecorded areas in all segments existing in sector 2, record the lead-in area and end area before and after the user data area, and record the completed area Open segment 3 is newly created behind segment 2.

In this way, a user data area for recording user data is set and recorded in sector 2 which is a divided area, but when the user data area to be set spans two data areas 54, 55 (recording layers 52, 53), the This user data area is divided into two, and the divided parts are set in the respective data areas 54 and 55 to be recorded.

When recording data in the data area of layer 1, in order to reproduce the data recorded at the start address of the data area, a layer run-in (Layer Run-in) having a data attribute indicating an intermediate area is recorded before the data area. Layer insertion is recorded when data is recorded in the data area of layer 1 .

In addition, when recording the lead-in area and end area of session 2, it is recorded on the intermediate layer between layers 0 and 1 so that it can be played back by an existing DVD-ROM drive.

The example in FIG. 8C shows a state in which sectors are divided across the recording layers 52 and 53 within a single end area.

In the section, a lead-in area (a first specified area for recording the first specified data) is set in front of the user data area, and an end area (for the second specified area for recording the second specified data) is set at the rear. When the lead-in area or the end area spans two data areas of the two recording layers 52 and 53, the lead-in area or the end area is divided into two, and each division is set in each data area and recorded.

In DVD+R, the data sizes of the lead-in area and the end area are constant, and the optical information recording/reproducing apparatus 1 detects the start address of the user data area of the session in consideration of these data sizes.

Therefore, even if the recording layers 52 and 53 are straddled in the lead-in area or the end area, by dividing and recording into two data areas, the start address of the user data area of the session can be accurately detected.

9A, 9B, 9C, and 9D are diagrams for explaining segment division in the information recording/reproducing apparatus 1 according to one embodiment of the present invention.

In DVD+R, a maximum of 16 segments can be recorded in one session. An insertion block of 1ECC block of dummy data having a user data attribute is placed between adjacent segments.

In other words, there is no insertion block immediately before the first segment and after the last segment in the extent. In addition, an insertion block is an area independent of adjacent segments.

In the example of FIG. 9A , reserved segment 1 whose segment start address and end address are specified exists on layer 0 . The unrecorded area after segment 1 is treated as an incomplete segment, and the end address of segment 2 is temporarily given as the end address of the data area of layer 1 .

The information of the reserved segment 1, which is the segment whose end address is specified among the segments existing in the extent, is recorded in the SDCB. Between segment 1 and segment 2 there is an intervening block which is recorded when user data is recorded in segment 2 .

FIG. 9B shows a state where the incomplete segment 2 is newly divided into two segments so that the user data area spans the recording layers 52, 53 (data areas 54, 55). In this case, as described above, the end address of the incomplete segment 2 is determined and becomes the reserved segment 2 . At this time, the information of reserved segment 2 is added to the SDCB, and the updated SDCB is recorded in a predetermined area. A new incomplete segment 3 is generated behind the reserved segment 2.

When data is recorded in the data area 55 of the layer 1, layer insertion is recorded before the data area 55 in order to reproduce the data recorded at the start address of the data area 55 . This layer insertion is recorded when data is recorded in the data area 55 of layer 1 .

FIG. 9C shows the case where the recording layers 52, 53 are divided at the boundary segment. In this case, there is an insertion block between the reserved segment 2 and the incomplete segment 3, that is, the start address of the data area of layer 1, but this insertion block (third predetermined data) is placed before the data area 55 of layer 1. In the middle area (third predetermined area) of layer 1 in the area (or, the front end of the data area 55 of layer 1 may also be used). The insertion block in this case is recorded with data having a data attribute indicating the middle area, and is recorded when the user data area of segment 3 is recorded.

That is, in DVD+R, the start address and end address of the segment are recorded in the SDCB, so the start address of the segment can be acquired by referring to the information in the SDCB.

Once the session ends, the data recorded in the session is read based on the file management information recorded at the specified position from the session start address. That is, in DVD+R, the segment information in the segment is not important for the segment where the data recording is completed, and it is necessary only when the open segment is divided into segments and recorded.

Therefore, when segment division is performed such that the start address of the data area of the recording layer 53 of the second layer becomes the insertion block, it is not necessary to record the insertion block in the data area.

Therefore, in this embodiment, even in the case where the start address of the data area of the recording layer 53 of the second layer is divided into segments such that the insertion block is performed, the insertion block is recorded in the data area 55 of the recording layer 53 of the second layer. Therefore, the data recorded to the start address of the data area of the recording layer 53 of the second layer can be reproduced normally.

FIG. 9D shows a special recording method for interleaved blocks, and therefore schematically shows an example of segment division for recording data from layer 1 of the second layer. In this example, segment division is performed at the boundary of the data areas 54 and 55 . In this case, as shown in FIG. 9D , all the data area 54 of layer 0 becomes reserved segment 1, the middle area of layer 1 in the area before the data area 55 of layer 1 becomes an insertion block, and the data area of layer 1 becomes incomplete. paragraph 2. By starting data recording from segment 2, the user can perform data recording from the second layer.

FIG. 10 is a flowchart for explaining an optical information recording method as an embodiment of the present invention executed by the optical information recording and reproducing apparatus 1 of FIG. 1 .

The processing in FIG. 10 is an optical information recording method executed by the controller 6 (CPU) of the optical information recording and reproducing apparatus 1 in FIG. 1 . The controller 6 divides the two data areas 54, 55 of the two recording layers 52, 53 of the optical disc 51 into a plurality of divided areas as a continuous single data area, that is, in units of sections or in units of segments (step S1 ).

The controller 6 records data in each divided area such as a sector or a segment with reference to FIGS. 7A to 9D using the above method (step S2 ).

FIG. 11 is a flowchart illustrating an example of specific processing when performing recording in units of sectors as an example of step S2 executed by the optical information recording and reproducing apparatus 1 .

In the example shown in FIG. 11 , a session is recorded except for the first session and the last session in the multi-session recording. A lead-in area and an end area are recorded before and after the user data area. In the example of FIG. 11, segment division within a segment cannot be performed.

When the session recording is started (YES in step S11), the controller 6 obtains the request recording address (step S12).

Next, the controller 6 judges whether or not the requested address is an address in layer 0 (step S13). When the requested address is an address in layer 0, the controller 6 records data in a predetermined area in layer 0 (step S14).

The controller 6 judges whether or not recording to the data area of layer 0 is completed in the data recording in step S14 (step S15). When the recording of layer 0 is completed, the controller 6 continues to transfer to the recording of layer 1, but here, in the previous one of the data area 55 of layer 1, that is, in the middle area of layer 1, as shown in Figure 9 A layer insertion block of a predetermined size is recorded as described (step S16). Next, the controller 6 performs data recording in the data area 55 of the layer 1 (step S17).

On the other hand, when recording to layer 0 has not been completed in step S15, the process proceeds to step S18.

Moreover, when the requested address is in layer 1 in step S13, controller 6 performs data recording in a predetermined area in layer 1 (step S17).

Next, the controller 6 judges whether or not data recording in the sector is completed (step S18). If the data recording is not completed, the controller 6 returns to step S12 to continue obtaining the request address.

On the other hand, when data recording is completed in step S18, it transfers to an extent end process. The controller 6 first obtains the start address of the lead-in area (step S19). Next, the controller 6 judges whether the lead-in area start address is within layer 0 (step S20).

When the start address of the lead-in area is in layer 0 in step S20, the controller 6 records the lead-in area in a predetermined area in layer 0 (step S21).

Next, the controller 6 judges whether or not recording to the data area of layer 0 is completed during the lead-in recording (step S22).

In step S22, when recording to layer 0 is completed, it transfers to recording to layer 1 next. The controller 6 first records layer 0 and the middle area of layer 1 (step S23). Next, the controller 6 records the remainder of the lead-in area to the data area of layer 1 (step S24).

On the other hand, in step S22, when the recording of the lead-in area in layer 0 is completed, the process proceeds to step S25. Also, when the lead-in area start address is in layer 1 ("No" in step S20), the lead-in area is recorded in a predetermined area in layer 1 (step S24).

In session end processing, end area recording is performed next. Here, first, the end area start address is acquired (step S25), and it is determined whether the end area start address is in layer 0 (step S26). When the end area start address is in layer 0 (YES in step S26), the end area is recorded in a predetermined area in layer 0 (step S27). Next, it is determined whether the recording of the data area of layer 0 is completed in the end area recording (step S28), and when the recording of layer 0 is completed (step S28 is "yes"), then transfer to the recording of layer 1 . Here, the intermediate areas of layer 0 and layer 1 are recorded (step S29), and the remainder of the end area is recorded in the data area of layer 1 (step S30). On the other hand, when recording of the lead-in area in layer 0 is completed ("No" in step S28), a series of processing ends. Also, when the start address of the end area is in layer 1 ("No" in step S26), the process proceeds to step S30, and an end area is recorded in a predetermined area in layer 1 (step S30). After the above section end processing is completed, a series of processing ends.

In the processing described above, user data, insert blocks, lead-in areas, end areas, intermediate areas, and the like are recorded on the optical disc 51 . The recording of user data and the like in this process is performed in the manner described above with reference to FIGS. 7A to 9D .

In this example, the recording of data in units of sessions other than the first session and the last session has been described, but the processing is the same when recording the first session or the last session. In the case of the first session recording, the lead-in area is recorded instead of the lead-in area, and in the case of the last session recording, the lead-out area is recorded instead of the end area. In this case, the recording of the lead-in area and the lead-out area is performed in the same manner as the recording of the lead-in area and the end area described with reference to FIGS. 8A to 8C .

In addition, in the session end process, the middle area of each recording layer 52, 53 is recorded, but not the entire area of the middle area is recorded, but the playback compatibility with the existing DVD-ROM drive is possible. It is also possible to record a part of it within the area.

Furthermore, in the above description, an OTP system dual-layer DVD+R disc was cited as an example, but the optical disc 51 may be a PTP system DVD+R disc. In this case, the layer insertion block of the recording layer 53 of the second layer is recorded in the lead-in area of the recording layer 53 of the second layer. , while the lead-out area of layer 0 and the lead-in area of layer 1 are recorded.

FIG. 12 is a flowchart of processing in the case of performing data recording in units of segments in step S2. In this example, after the incomplete segment is divided into a reserved segment and a new incomplete segment in step S1, data recording is performed in the reserved segment. In FIG. 12, steps with the same reference numerals as those in FIG. 11 are processes of the same content.

After segment recording starts (YES in step S31), the segment is first reserved with a specified size (step S32). In this reserve process, the data areas 54 and 55 existing in layer 0 and layer 1 are regarded as one approximate data area 56 , and segment division is permitted within the range spanning the recording layers 52 and 53 . Next, the request recording address is acquired (step S12), and it is determined whether the request address is an address in layer 0 (step S13). In the case that the request address is an address in layer 0 (step S13 is "yes"), further determine whether the request address is a segment start address (step S33), in the case of a segment start address (step S33 is "yes") ), insert a block in the previous record of the segment (step S34), and perform data recording on layer 0 (step S14). On the other hand, if the request address is not the segment start address ("No" in step S33), go to step S14.

Next, during data recording, it is determined whether the recording of the data area of layer 0 is completed (step S15), and when the recording of layer 0 is completed ("Yes" in step S15), the recording is then transferred to layer 1. . Here, a layer insertion block of a predetermined size is recorded in the middle area of layer 1 immediately before the data area of layer 1 (step S16), and data is recorded in the data area of layer 1 (step S17). On the other hand, if recording to layer 0 has not been completed ("No" in step S15), the process proceeds to step S18.

Next, when the request address is within layer 1 ("No" in step S13), it is determined whether it is a segment start address (step S35). If it is not the segment start address ("No" in step S35), data is recorded in a predetermined area of layer 1 (step S17). On the other hand, when the request address is the segment start address (YES in step S35), it is further determined whether the request address is the data area start address of layer 1 (step S36). Here, if it is not the start address of the data area of layer 1 (step S36 is "No"), then the insertion block is recorded at a specified address in the data area of layer 1 (step S37), and if it is the start address of the data area of layer 1 (step S37). S36 is "yes"), then record the insertion block in the previous one of the data area of layer 1, that is, the middle area of layer 1 (step S38), and perform data recording in the data area of layer 1 (step S17). After the above data recording process ends, determine whether the data recording of the segment is completed (step S18), if the segment recording is not completed (step S18 is "No"), then continue to obtain the request address (after step S12), and in the segment When the recording is completed (YES in step S8), a series of processing ends.

In related processing, recording of user data, insertion blocks, etc. is performed in the aforementioned manner with reference to FIGS. 7 to 9 .

In this example, the case where data is recorded in the reserved segment after the segment is reserved is described, but the same process can be performed when data is recorded in a new incomplete segment after the segment is reserved. In addition, segment retention and data recording do not have to be performed consecutively, and may be performed independently of each other. Furthermore, an OTP-based dual-layer DVD+R disc is given as an example, but a PTP-based DVD+R may also be used. Also, the insertion block recorded immediately before the data area may be a layer insertion block.

FIG. 13 is a block diagram showing the configuration of an information processing device 101 according to an embodiment of the present invention including the optical information recording and reproducing device in FIG. 1 .

As shown in FIG. 13 , the information processing device 101 is, for example, a personal computer, and a CPU 102 that performs various calculations and centrally controls each part is connected via a bus 104 , and a memory 103 composed of various ROMs or RAMs.

Also connected to the bus 104 are a magnetic storage device 105 such as a hard disk drive (HDD), an input device 106 composed of a mouse and a keyboard, a display device 107 such as an LCD or a CRT, and a recording medium reader such as a recording medium 108 such as an optical disk, via a predetermined interface. The fetching device 109 and the optical information recording and playback device 1.

In addition, a predetermined communication interface 111 for communicating with a network 110 is connected to the bus 104 . The communication interface 111 can be connected to a WAN such as the Internet via the network 110 .

As the recording medium 108, various types of media such as optical disks such as CDs and DVDs, magneto-optical disks, and floppy disks can be used. In addition, as the recording medium reading device 109 , depending on the type of the recording medium 108 , an optical disk drive, a magneto-optical disk drive, a floppy disk drive, or the like can be used.

In the information processing device 101 of FIG. 13 , the recording medium reading device 109 is shown separately from the optical information recording and reproducing device 1 . Alternatively, the recording medium reading device 109 may be configured as the same device as the optical information recording and reproducing device 1 .

In addition, in the description of the optical information recording and reproducing apparatus 1, the description has been made on the premise that the control by the controller 6 is executed. Alternatively, the processing in FIGS. 7A to 12 may be realized by control executed by the information processing device 101 according to a control program recorded in the magnetic storage device 105 .

In this case, the control program recorded in the magnetic storage device 105 constitutes a program according to one embodiment of the present invention. The control program is read from the recording medium 108 according to one embodiment of the present invention by the recording medium reading device 109 , or downloaded from a WAN such as the Internet, and is recorded in the magnetic storage device 105 by being installed in the information processing device 101 . With this installation, the information processing device 101 becomes operable for the control described above. This control program is software that operates on a predetermined operating system. In addition, it may be a program constituting a part of specific application software.

The above-mentioned optical disc 51 was described using an OTP dual-layer DVD+R as an example. Therefore, the division of the divided area is performed in units of sectors or segments, or may be performed in units of tracks.

In addition, in the above-mentioned embodiment, an example targeting DVD+R was described as the optical disc 51, but the optical information recording method, optical information recording device, information processing device, optical information recording medium, program, and recording medium of the present invention are not Limited to this point, various types of optical discs such as DVD+RW and DVD-R/RW can be used as targets.

Claims (9)

1. light information recording method, but the optical information recording medium that has a plurality of recording layers and have the data area of recorded information respectively on each recording layer is carried out the record of data, it is characterized in that this method comprises:

Segmentation procedure is divided into a plurality of cut zone with at least two data zones in the described data area of described a plurality of recording layers as continuous single data area; And

Recording step carries out the record of data in each cut zone,

Wherein, described recording step is set the user data area that is used for user data in described cut zone, when described user data area is crossed over described two data zone, this user data area is divided into two, thereby each partitioning portion is set in described each data area carries out described record

And, described recording step is set in the first regulation zone of record first specified data of the place ahead configuration of the inherent described user data area of described cut zone, at least one in the zone of second of Pei Zhi record second specified data regulation in the wings, when described two data zone is crossed in the described first or second regulation zone, with this first or second regulation Region Segmentation is two, carries out described record thereby each partitioning portion is set in described data area.

2. light information recording method as claimed in claim 1, it is characterized in that, described segmentation procedure is cutting apart of described cut zone as carrying out cutting apart of section, described recording step is regional as ingress area with described first regulation, described record as the export area, is carried out in the described second regulation zone.

3. light information recording method as claimed in claim 1, it is characterized in that, meet at described optical information recording medium under the situation of the DVD+R standard that is forming double-deck recording layer on the single face, described segmentation procedure is cutting apart of described cut zone as carrying out cutting apart of section, described recording step is regional as introducing with the described first regulation zone, described record as end region, is carried out in the described second regulation zone.

4. device for optical information recording, but the optical information recording medium that has a plurality of recording layers and have the data area of recorded information respectively on each recording layer is carried out the record of data, it is characterized in that, comprising:

Partition member as continuous single data area, is divided into a plurality of cut zone with at least two data zones in the described data area of described a plurality of recording layers; And

Recording-member carries out the record of data respectively in each cut zone,

Wherein, the user data area of described recording-member setting recording user data in described cut zone when described user data area is crossed over two data zones, is divided into two with this user data area, thereby each partitioning portion is set in described data area carries out described record

And, described recording-member is set in the first regulation zone of record first specified data of the place ahead configuration of the inherent described user data area of described cut zone, at least one in the zone of second of Pei Zhi record second specified data regulation in the wings, when described two data zone is crossed in the described first or second regulation zone, with this first or second regulation Region Segmentation is two, carries out described record thereby each partitioning portion is set in described data area.

5. device for optical information recording as claimed in claim 4, it is characterized in that, described partition member is cutting apart of described cut zone as carrying out cutting apart of section, described recording-member is regional as ingress area with described first regulation, described record as the export area, is carried out in the described second regulation zone.

6. device for optical information recording as claimed in claim 4, it is characterized in that, meet at described optical information recording medium under the situation of the DVD+R standard that is forming double-deck recording layer on the single face, described partition member is cutting apart of described cut zone as carrying out cutting apart of section, described recording-member is regional as introducing with the described first regulation zone, described record as end region, is carried out in the described second regulation zone.

7. signal conditioning package, comprise device for optical information recording, but described device for optical information recording carries out the record of data to the optical information recording medium that has a plurality of recording layers and have the data area of recorded information respectively on each recording layer, it is characterized in that this signal conditioning package comprises:

Partition member as continuous single data area, is divided into a plurality of cut zone with at least two data zones in the described data area of described a plurality of recording layers; And

Recording-member carries out the record of data respectively in each cut zone,

Wherein, the user data area of described recording-member setting recording user data in described cut zone when described user data area is crossed over two data zones, is divided into two with this user data area, thereby each partitioning portion is set in described data area carries out described record

And, described recording-member is set in the first regulation zone of record first specified data of the place ahead configuration of the inherent described user data area of described cut zone, at least one in the zone of second of Pei Zhi record second specified data regulation in the wings, when described two data zone is crossed in the described first or second regulation zone, with this first or second regulation Region Segmentation is two, carries out described record thereby each partitioning portion is set in described data area.

8. signal conditioning package as claimed in claim 7, it is characterized in that, described partition member is cutting apart of described cut zone as carrying out cutting apart of section, described recording-member is regional as ingress area with described first regulation, described record as the export area, is carried out in the described second regulation zone.

9. signal conditioning package as claimed in claim 7, it is characterized in that, meet at described optical information recording medium under the situation of the DVD+R standard that is forming double-deck recording layer on the single face, described partition member is cutting apart of described cut zone as carrying out cutting apart of section, described recording-member is regional as introducing with the described first regulation zone, described record as end region, is carried out in the described second regulation zone.

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