JP4618741B2 - Recording apparatus and recording method for recording information on a multilayer recording disk - Google Patents

Description

  The present invention relates to a recording apparatus and a recording method for recording information such as content data on a multilayer recording disk.

  Currently, DVDs are widely used as information recording media for recording information such as content data. Furthermore, among multi-layer recording media having a plurality of recording layers, development of a dual-layer DVD-R (DVD-R dual layer) is in progress.

  A dual-layer DVD-R is a write-once DVD having two recording layers on one side. For the dual-layer DVD-R, the VR format is applied as the content data recording format. In addition, for a dual-layer DVD-R, so-called layer jump recording (Format 4) can be applied as a content data recording method.

  In layer jump recording, content data is divided into a plurality of data blocks each having a size of several M to several tens of M bytes. Then, the first data block is recorded on the first recording layer (layer 0), the second data block is recorded on the second recording layer (layer 1), and the third data block is recorded on the first recording layer. Each time one data block is recorded, such as recording on a layer, the recording layer on which the data block is recorded is changed.

  In layer jump recording, content data is divided into a plurality of data blocks, and each time one data block is recorded, the recording layer in which the data block is recorded is changed. For this reason, the content data is distributed and recorded in the first recording layer and the second recording layer. Therefore, the management of content data becomes complicated. As a result, there is a risk that the difficulty of developing recording software installed in a recording apparatus such as a DVD recorder may increase.

  Further, in layer jump recording, content data is distributed and recorded in the first recording layer and the second recording layer. For this reason, two layers are compared with the recording method (Format 1) in which the content data is first recorded sequentially on the first recording layer and then the remainder of the content data is sequentially recorded on the second recording layer. It is difficult to effectively use the user data area of the DVD-R. Therefore, the actual recording capacity of the dual-layer DVD-R may be smaller than the physical maximum recording capacity (for example, about 8.5 Gbytes) that the dual-layer DVD-R has.

  Furthermore, overcoming these challenges increases the difficulty given the physical or standard constraints associated with the dual layer DVD-R or VR format.

That is, the physical or standard restrictions on the dual-layer DVD-R or VR format are as follows.
(1) In order to stably record data in a certain area of the second recording layer, before that, in the area of the first recording layer located opposite to the area of the second recording layer in the axial direction of the disc It is desirable to record some data.
(2) If the distance between data blocks recorded in different recording layers is not less than a predetermined distance (for example, 65536 sectors), seamless reproduction between these data blocks is not guaranteed.
(3) The boundary position between the lead-in area and the user data area in the first recording layer and the boundary position between the lead-out area and the user data area in the second recording layer match in the radial direction of the disc. Not. That is, the size and end position of the user data area are different between the first recording layer and the second recording layer.
(4) When recording data on the dual-layer DVD-R, in order to record management information (file system and VMGI (Video Manager Information)) in the innermost part of the user data area of the first recording layer Management information recording area must be secured. Moreover, the unrecorded state is maintained in the management information recording area until the dual-layer DVD-R is finalized.

  According to item (1), when performing layer jump recording, attention must be paid to the size of each data block. For example, if a data block larger than the data block recorded on the first recording layer is to be recorded on the second recording layer, this data block may not be stably recorded on the second recording layer.

  According to item (2), when performing layer jump recording, attention must be paid to the recording positions of data blocks to be sequentially reproduced. For example, when the distance between the end of the first data block to be reproduced and the beginning of the second data block to be reproduced is larger than a predetermined distance (for example, 65536 sectors), seamless reproduction is performed between these data blocks. Is no longer guaranteed.

  According to item (3), the recording position of each data block and the size of each data block must be adjusted well. For example, since the position of the inner periphery of the user data area of the first recording layer and the position of the inner periphery of the user data area of the second recording layer do not match, the recording position of each data block and each data If the size of the block is not adjusted well, there is a possibility that a semi-empty empty area may be formed in the innermost peripheral portion of the second recording layer.

  According to item (4), the recording position of each data block and the size of each data block must be well adjusted inside the user data area of each recording layer. For example, by securing the management information recording area, the recording start position of the data block to be recorded first in the user data area of the first recording layer is shifted to the outer periphery side, so that the inner periphery of the user data area of each recording layer is If the recording position of each data block and the size of each data block are not adjusted well inside the side, layer jump recording may not be performed efficiently.

  When performing the layer jump recording, if the recording position of each data block and the size of each data block are determined so as to satisfy these items (1) to (4), the content data will be the first one. There is a risk that recording is performed in a complicated manner in the first recording layer and the second recording layer. If the content data is recorded in a complicated manner on the first recording layer and the second recording layer, the complexity of managing the content data increases and the difficulty of developing the recording software increases. In addition, effective utilization of the user data area is difficult, and the actual recording capacity of the dual-layer DVD-R may be significantly reduced.

  The present invention has been made in view of the problems as exemplified above, and a first object of the present invention is a recording capable of realizing layer jump recording capable of easily managing content data. An apparatus, a recording method, and a computer program are provided.

  A second object of the present invention is to provide a recording apparatus, a recording method, and a computer program capable of realizing layer jump recording capable of effectively utilizing a user data area of a multilayer recording disk. .

In order to solve the above problems, a recording apparatus of the present invention includes a first recording layer that is irradiated with a light beam without passing through another recording layer, and irradiation after the light beam passes through the first recording layer. At least a second recording layer, and each of the first recording layer and the second recording layer exists outside the user data area and a user data area in which a user is allowed to record content data. And a recording device for recording content data on a multi-layer recording disk having an inner peripheral area adjacent to an inner peripheral end of the user data area, and (a) a user data area of the first recording layer An area securing means for securing a management information recording area for recording management information inside the inner circumference side, and (b) existing in the first recording layer, located outside the outer circumference side of the management information recording area, The inner circumference of the second recording layer An adjustment data recording area including a position where a straight line extending in parallel with an axis of the multilayer recording disk and a position where the first recording layer intersects with a boundary position between the area and the user data area of the second recording layer Adjustment data recording means for recording adjustment data on the recording medium, and (c) content recording means for recording the content data in the user data area, wherein the content data is divided into a plurality of data blocks each having a uniform size. And a content data recording unit that changes a recording layer in which the data block is to be recorded every time one data block is recorded, wherein the content data recording unit includes one data among the plurality of data blocks. Before the block is recorded in the second area included in the user data area of the second recording layer and adjacent to the inner peripheral area, That is, in the first recording layer, the adjustment data recording means records the adjustment data in the adjustment data recording area, and the content data recording means is adjacent to an outer peripheral side end of the adjustment data recording area. The first data block to be recorded among the plurality of data blocks is recorded in the first region from the position where the second data region is located to the outer peripheral side of the second region.

In order to solve the above problems, a recording method of the present invention includes a first recording layer irradiated with a light beam without passing through another recording layer, and irradiation after the light beam passes through the first recording layer. At least a second recording layer, and each of the first recording layer and the second recording layer exists outside the user data area and a user data area in which a user is allowed to record content data. And a recording method for recording content data on a multi-layer recording disk having an inner peripheral area adjacent to an inner peripheral end of the user data area, wherein (a) the user data area of the first recording layer An area securing step for securing a management information recording area for recording management information inside the inner circumference side; and (b) existing in the first recording layer, located outside the outer circumference side of the management information recording area, The inner circumference of the second recording layer An adjustment data recording area including a position where a straight line extending in parallel with an axis of the multilayer recording disk and a position where the first recording layer intersects with a boundary position between the area and the user data area of the second recording layer An adjustment data recording step for recording adjustment data on the recording medium, and (c) a content recording step for recording the content data in the user data area, wherein the content data is divided into a plurality of data blocks each having a uniform size. A content data recording step of changing a recording layer in which the data block is to be recorded each time one data block is recorded, wherein the content data recording step includes one data of the plurality of data blocks. Before the block is recorded in the second area included in the user data area of the second recording layer and adjacent to the inner peripheral area, That is, in the first recording layer, the adjustment data recording step records the adjustment data in the adjustment data recording region, and the content data recording step is adjacent to an outer peripheral end of the adjustment data recording region. The first data block to be recorded among the plurality of data blocks is recorded in the first region from the position where the second data region is located to the outer peripheral side of the second region.

  In order to solve the above problems, a computer program according to the present invention causes a computer to function as the recording apparatus according to the present invention (including various aspects thereof).

  In order to solve the above problems, a computer program product in a computer-readable medium clearly embodies program instructions executable by a computer, and includes the computer as a recording apparatus of the present invention (however, including various aspects thereof). ).

  According to the computer program product of the present invention, when the computer program product is read into a computer from a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk storing the computer program product, or, for example, by a transmission wave. If the computer program product is downloaded to a computer via communication means, the above-described recording apparatus of the present invention can be implemented relatively easily. More specifically, the computer program product may be configured by computer-readable code (or computer-readable instructions) that functions as the above-described recording apparatus of the present invention.

  Such an operation and other advantages of the present invention will become apparent from the embodiments and examples described below.

1 is a block diagram illustrating an embodiment of a recording apparatus of the present invention. It is explanatory drawing which shows the structure of 2 layer DVD-R which the recording device in FIG. 1 handles. It is explanatory drawing which shows the state in which data was recorded on each of the 1st recording layer and 2nd recording layer of 2 layer DVD-R so that it might mutually face in the axial direction of 2 layer DVD-R. It is explanatory drawing which shows the state by which the several data block was recorded on the mutually different recording layer in 2 layer DVD-R. 2 is a flowchart showing a recording operation of the recording apparatus in FIG. 1. It is explanatory drawing which shows the recording state of 2 layer DVD-R in which content data was recorded by the recording operation of the recording device in FIG. It is explanatory drawing which shows the other recording state of 2 layer DVD-R by which content data was recorded by recording operation | movement of the recording device in FIG. It is a block diagram which shows the Example of the recording device of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,100 Recording apparatus 11 Area reservation part 12 Adjustment data recording part 13 Content data recording part

  Hereinafter, the best mode for carrying out the present invention will be described in order for each embodiment based on the drawings.

  FIG. 1 shows an embodiment of a recording apparatus of the present invention. A recording device 10 in FIG. 1 is a recording device that records content data on a dual-layer DVD-R. The recording apparatus 10 employs layer jump recording (Format 4) as a content data recording method. The recording device 10 is a DVD recorder, for example.

  The recording apparatus of the present invention is not limited to a DVD recorder, but may be another recorder, or a computer or a car navigation system having a function of recording content data on a double-layer recording disk.

  Further, in the following description, the case where the present invention is applied to a recording apparatus that records information on a two-layer recording medium will be described as an example. It can also be applied to media.

  The double-layer recording disk used by the recording device 10 to record content data is a double-layer DVD-R (DVD-R dual layer). Note that the dual-layer recording disk used by the recording apparatus of the present invention for recording content data is not limited to the dual-layer DVD-R. For example, another write-once or rewritable recording disk having two recording layers, such as a two-layer DVD + R, a two-layer DVD-RW, a two-layer DVD + RW, a two-layer Blu-ray disc, and a two-layer HD-DVD may be used.

  The content data recorded on the dual-layer DVD-R by the recording device 10 includes, for example, video data, audio data, document data, numerical data, and the like. The content data includes management information or control information for managing or controlling reproduction of video data, audio data, and the like.

  As shown in FIG. 1, the recording apparatus 10 includes an area securing unit 11, an adjustment data recording unit 12, and a content data recording unit 13.

  The area securing unit 11 secures a management information recording area for recording management information inside the user data area of the first recording layer of the dual-layer DVD-R.

  The adjustment data recording unit 12 records the adjustment data in the adjustment data area. The adjustment data area exists in the first recording layer of the dual-layer DVD-R and is located outside the outer peripheral side of the management information recording area. Further, the adjustment data area intersects with the boundary position between the lead-out area of the second recording layer of the dual-layer DVD-R and the user data area of the second recording layer, and a straight line extending parallel to the axis of the dual-layer DVD-R. The position where the first recording layer intersects is included therein.

  The content data recording unit 13 records content data from a position adjacent to the outer edge of the adjustment data recording area in the first recording layer of the dual-layer DVD-R. The content data recording unit 13 records content data according to the layer jump recording method.

  The area securing unit 11, the adjustment data recording unit 12, and the content data recording unit 13 are, for example, arithmetic processing devices such as a CPU (Central Processing Unit) and MPU (Micro Processing Unit), ROM (Read Only Memory), and RAM (Random Access). Memory), a control device that controls an optical system such as an optical pickup, a control device that controls a drive control system that performs tracking control, focusing control, rotation control of a two-layer DVD-R, etc. Has been.

  FIG. 2 shows the structure of a dual-layer DVD-R. As shown in FIG. 2, the dual-layer DVD-R 20 includes a first recording layer 21, a second recording layer 22, and a space layer 23. The first recording layer 21 is a recording layer (layer 0) that is irradiated with a light beam without passing through another recording layer. The second recording layer 22 is a recording layer (layer 1) that is irradiated after the light beam passes through the first recording layer 21. The space layer 23 is a layer provided between the first recording layer 21 and the second recording layer 22 and is not a recording layer. A one-dot chain line AX in FIG. 2 indicates an axis of the double-layer DVD-R 20. The dual-layer DVD-R 20 rotates about the axis AX as a rotation axis.

  The first recording layer 21 has a user data area 24, a lead-in area 25, and a middle area 26. The user data area 24 is an area where the user is allowed to record content data. The lead-in area 25 exists outside the user data area 24 and is adjacent to the inner peripheral end of the user data area 24. The middle area 26 exists outside the user data area 24 and is adjacent to the outer edge of the user data area 24.

  The second recording layer 22 has a user data area 27, a lead-out area 28, and a middle area 29. The user data area 27 is an area where the user is allowed to record content data. The lead-out area 28 exists outside the user data area 27 and is adjacent to the inner peripheral side end of the user data area 27. The middle area 29 exists outside the user data area 27 and is adjacent to the outer edge of the user data area 27.

  The boundary position between the lead-in area 25 and the user data area 24 (strictly, the start position of the user data area 24) A, and the boundary position between the lead-out area 28 and the user data area 27 (strictly, the user data area 27 (Tail position) B-1 does not coincide with the radial direction of the dual-layer DVD-R20. That is, the boundary position A and the boundary position B-1 are not completely opposite to each other in the axial direction of the two-layer DVD-R20.

  FIG. 3 shows a state where data is recorded on the first recording layer 21 and the second recording layer 22 of the dual-layer DVD-R 20 so as to face each other in the axial direction of the dual-layer DVD-R 20. In order to eliminate or reduce the influence of the light beam interlayer deflection, the dual-layer DVD-R 20 has the following restrictions. That is, as shown in FIG. 3, in order to stably record the data DT2 in an area AR2 of the second recording layer 22, before that, the data DT2 is placed at a position facing the area AR2 in the axial direction of the dual-layer DVD-R20. It is desirable to record some data DT1 in an area AR1 of a certain first recording layer 21.

  Furthermore, in order to start stable recording of the data DT2 from the head position P of the area AR2 of the second recording layer 22, any data up to the end position Q-1 of the area AR1 of the first recording layer 21 is required before that. It is desirable to record DT1. This position Q-1 is located on the outer peripheral side of the dual-layer DVD-R 20 with respect to the position P. The distance L1 between the position P and the position Q-1 in the radial direction of the dual-layer DVD-R 20 is, for example, about 23E0h sectors in hexadecimal notation and about 9184 sectors in decimal notation. Hereinafter, when a numerical value is expressed in hexadecimal, “h” is added to the numerical value.

  Further, in order to perform stable recording of the data DT2 up to the end position R-1 of the area AR2 of the second recording layer 22, before that, some data DT1 from the head position S of the area AR1 of the first recording layer 21 is obtained. Should be recorded. This position S is located on the inner peripheral side of the dual-layer DVD-R 20 with respect to the position R-1. The distance L2 between the position R-1 and the position S in the radial direction of the dual-layer DVD-R 20 is, for example, about 1000h to 23E0h, and when the physical sector number at the position S is about 30000h to 40000h, the distance L2 Is, for example, 1000 h.

  FIG. 4 shows a state in which a plurality of data blocks are recorded on different recording layers in the dual-layer DVD-R 20. The double-layer DVD-R20 has the following restrictions. That is, if the distance between two data blocks recorded on different recording layers is not less than a predetermined distance, seamless reproduction between these data blocks is not guaranteed. This predetermined distance is, for example, 65536 sectors.

  For example, as shown in FIG. 4, the distance between the end position T-1 of the data block DB1 recorded in the first recording layer 21 and the start position U of the data block DB2 recorded in the second recording layer 22 Is equal to or less than the predetermined distance (described as “L3” in FIG. 4). Therefore, when the data block DB1 and the data block DB2 are reproduced in this order, seamless reproduction between the data block DB1 and the data block DB2 is guaranteed. On the other hand, the distance between the end position V-1 of the data block DB2 recorded in the second recording layer 22 and the start position W of the data block DB3 recorded in the first recording layer 21 is larger than the predetermined distance L3. large. Therefore, when the data block DB2 and the data block DB3 are reproduced in this order, seamless reproduction between the data block DB2 and the data block DB3 is not guaranteed.

  FIG. 5 shows a content data recording operation in the recording apparatus 10. FIG. 6 shows a recording state of content data in the dual-layer DVD-R 20 realized by this recording operation.

  The recording device 10 records content data on the dual-layer DVD-R 20 as follows, for example. In other words, the user inputs an instruction to the recording apparatus 10 that the content data should be recorded on the dual-layer DVD-R 20. In response to this, the recording apparatus 10 first secures the management information recording area 31 as shown in FIG. 5 (step S1). The management information recording area 31 is secured by the area securing unit 11.

  As shown in FIG. 6, the position where the management information recording area 31 is secured is the innermost peripheral portion in the user data area 24 of the first recording layer 21. The inner peripheral end of the management information recording area 31 and the outer peripheral end of the lead-in area 25 are adjacent to each other. For example, the start position of the management information recording area 31 is A, and the end position of the lead-in area 25 is A-1. The size of the management information recording area 31 is a size that can record, for example, about 712 Kbytes of data. The management information recording area 31 is an area for recording management information such as a file system and VMGI. Note that the time when the management information is actually recorded in the management information recording area 31 is when the dual-layer DVD-R 20 is finalized. That is, in step S1, management information is not recorded, but only the management information recording area 31 is secured (reserved). The management information recording area 31 remains unrecorded until management information is recorded at the time of finalization.

  As shown in FIG. 5, the recording apparatus 10 then records the adjustment data AD in the adjustment data recording area 32 (step S2 in FIG. 5). The adjustment data AD is recorded by the adjustment data recording unit 12.

  As shown in FIG. 6, the adjustment data recording area 32 exists in the first recording layer 21 and is located outside the outer peripheral side of the management information recording area 31. It is desirable that the inner peripheral end of the adjustment data recording area 32 is adjacent to the outer peripheral end of the management information recording area 31. By making the management information recording area 31 and the adjustment data recording area 32 adjacent to each other, data recording or data management in the recording apparatus 10 can be simplified. For example, the end position of the management information recording area 31 is C-1, and the start position of the adjustment data recording area 32 is C.

  Further, the adjustment data recording area 32 intersects the boundary position B-1 between the lead-out area 28 and the user data area 27, and extends straight in parallel to the axis AX (see FIG. 2) of the double-layer DVD-R20. A position D where the first recording layer 21 intersects is included therein. That is, the adjustment data recording area 32 includes a position D immediately below the boundary position B-1 between the lead-out area 28 and the user data area 27 therein.

  Further, there is a light beam between the boundary position B-1 between the lead-out area 28 and the user data area 27 and the position E following the outer peripheral side end position (end position) E-1 of the adjustment data recording area 32. A predetermined distance L4 is set in the radial direction of the dual-layer DVD-R 20 to remove or reduce the influence of the interlayer deflection. The predetermined distance L4 is equal to the distance L1 in FIG. 3, and is, for example, about 23E0h (about 9184) sectors. As a result, the end position E-1 of the adjustment data recording area 32 is located on the outer peripheral side of the boundary position B between the lead-out area 28 and the user data area 27.

  Specifically, in step S <b> 2 in FIG. 5, the adjustment data recording unit 12 first recognizes the position C following the management information recording area 31. Subsequently, the adjustment data recording unit 12 has a position E of the first recording layer 21 that is a predetermined distance L4 away from the boundary position B-1 between the lead-out area 28 and the user data area 27 in the radial direction of the dual-layer DVD-R20. Is calculated. Subsequently, the adjustment data recording unit 12 records the adjustment data AD between the position C and the position E-1. The adjustment data AD is preferably dummy data. However, the contents of the adjustment data AD are not limited to dummy data, and may be a part of content data or other management information.

  Subsequently, the recording device 10 records content data (steps S3 to S5). The content data is recorded by the content data recording unit 13 according to the layer jump recording method. That is, the content data recording unit 13 divides the content data into a plurality of data blocks # 1, # 2, # 3, # 4,..., Records the first data block # 1 on the first recording layer 21, Each time one data block is recorded, such as recording the second data block # 2 on the second recording layer 22 and recording the third data block # 3 on the first recording layer 21, The recording layer in which the data block is recorded is changed.

  Further, the content data recording unit 13 performs layer jump recording of content data according to a special rule as described below.

  That is, the content data recording unit 13 divides the content data into a plurality of data blocks each having a uniform size.

  Further, when the first data block is recorded on the first recording layer 21, the odd-numbered data block and the even-numbered data block to be reproduced subsequently are arranged in the axial direction of the dual-layer DVD-R 20 ( These data blocks are arranged in the first recording layer 21 and the second recording layer 22 so as to face each other (though not completely). For example, as shown in FIG. 6, the data block # 1 and the data block # 2 are arranged so as to face each other, and the data block # 3 and the data block # 4 are arranged so as to face each other.

  Further, two data blocks arranged on the first recording layer 21 and the second recording layer 22 of the dual-layer DVD-R 20 so as to face each other in the axial direction are the same as the data blocks arranged in the first recording layer 21. A predetermined distance (for example, 23E0h) is set between the tail position and the head position of the data block arranged in the second recording layer 22 in order to remove or reduce the influence of interlayer deflection of the light beam. Thus, according to the example shown in FIG. 6, in the radial direction of the dual-layer DVD-R 20, the distance between the end position F-1 of the data block # 1 and the start position G of the data block # 2 is 23E0h sectors. Become. Since the size of each data block is uniform, the distance between the head position E of the data block # 1 and the tail position B-1 of the data block # 2 in the radial direction of the dual-layer DVD-R 20 is also 23E0h sector. Become. Further, in the radial direction of the dual-layer DVD-R 20, the distance between the end position H-1 of the data block # 3 and the start position J of the data block # 4 is also 23E0h sector.

  Further, the size of each data block is set so that the distance between the two data blocks to be sequentially reproduced is a predetermined distance L3 (for example, 65536 sectors, see FIG. 4) or less. In FIG. 6, for example, the size of each data block is set so that the distance between the tail position B-1 of data block # 2 and the head position F of data block # 3 is 65536 sectors or less.

  Specifically, the content data recording operation in steps S3 to S5 is as follows. First, the content data recording unit 13 records the data block # 1 from the position E of the first recording layer 21 (step S3). Subsequently, the content data recording unit 13 determines whether or not recording of all data blocks constituting the content data has been completed (step S4). When the recording of all the data blocks constituting the content data is not completed (step S4: NO), the content data recording unit 13 performs a layer jump, and the irradiation position of the light beam is recorded from the first recording layer 21 to the second recording. Move to layer 22 (step S5). Subsequently, the content data recording unit 13 records the data block to be recorded next, that is, the data block # 2 from the position G of the second recording layer 22 (step S3). Subsequently, the content data recording unit 13 determines whether or not recording of all data blocks constituting the content data has been completed (step S4). When recording of all the data blocks constituting the content data has not been completed (step S4: NO), the content data recording unit 13 performs a layer jump, and the irradiation position of the light beam is recorded from the second recording layer 22 to the first recording. Move to layer 21 (step S5). Subsequently, the content data recording unit 13 records the data block to be recorded next, that is, the data block # 3 from the position F of the first recording layer 22 (step S3). As described above, when the data block recording and the layer jump are repeatedly executed and the recording of all the data blocks constituting the content data is completed (step S4: YES), the content data recording operation in the recording device 10 is completed. To do.

  As described above, the recording apparatus 10 divides content data into a plurality of data blocks each having a uniform size, and performs layer jump recording on such data blocks. The data block to be recorded on the first recording layer 21 and the data block to be recorded on the second recording layer 22 are arranged to face each other (although not completely) in the axial direction of the dual-layer DVD-R 20. Thereby, the distribution of the content data in the first recording layer 21 and the second recording layer 22 becomes uniform. Therefore, management of content data to be recorded or recorded on the dual-layer DVD-R 20 can be simplified. Therefore, it is possible to simplify the development of recording software installed in the recording apparatus 10.

  The recording apparatus 10 records the data block # 2 to be recorded first on the second recording layer 22 so that the end position B-1 is adjacent to the start position B of the lead-out area 28. As a result, the content data can be recorded up to the very innermost part of the user data area 27 of the second recording layer 22. That is, a semi-empty empty area is not formed in the innermost peripheral portion of the user data area 27. Thereby, the user data area 27 can be used effectively. Therefore, it is possible to prevent the actual recording capacity of the dual-layer DVD-R20 from being significantly reduced, and the actual recording capacity of the dual-layer DVD-R20 is reduced to the double-layer DVD while adopting the layer jump recording method. -It can be close to the physical maximum recordable capacity of R20 (for example, about 8.5 GB).

  Further, in order to record the data block to the very innermost part of the user data area 27 of the second recording layer 22, the recording apparatus 10 includes the lead-out area 28 and the user data area 27 in the first recording layer 21. The adjustment data AD is recorded in a certain range including the position D that is directly below the boundary position B-1. Specifically, as shown in FIG. 6, the recording apparatus 10 has a second distance L4 away from the boundary position B-1 between the lead-out area 28 and the user data area 27 in the radial direction of the dual-layer DVD-R 20. The position E of one recording layer 21 is calculated, and adjustment data AD is recorded between position C and position E-1. Thereby, when content data is recorded in the innermost peripheral portion of the user data area 27, the influence of the interlayer deflection of the light beam can be removed or reduced, and the content data is stored in the innermost peripheral portion of the user data area 27. It becomes possible to record stably.

  In the above description, as shown in FIG. 6, the management information recording area 31 and the adjustment data recording area 32 are adjacent to each other. However, the present invention is not limited to this. As shown in FIG. 7, the management information recording area 31 and the adjustment data recording area 32 may not be adjacent to each other.

  More specifically, in many of the dual-layer DVD-Rs 20, the physical sector number at the boundary position A between the lead-in area 25 and the user data area 24 is 30000h, and the lead-out area 28, the user data area 27, The physical sector number of the boundary position B-1 is FCC8FFh. In this case, the physical sector number at position E of the first recording layer 21 is 33701h. Then, the distance between the position A and the position E-1 of the first recording layer 21 is 3700 h sectors. On the other hand, the management information recording area 31 has a maximum size of about 15 Bh sectors (712 kbytes). Further, in order to stably record data at the position B-1 of the second recording layer 22, a position separated by 1000 h sectors from the position D of the first recording layer 21 immediately below the position B-1 to the inner circumference side. The adjustment data AD may be recorded between K and the position E from the position D to the position E-1 that is (23E0-1) h sectors away from the outer periphery. Therefore, the size of the adjustment data AD is 1000h + (23E0-1) h = 33DFh sectors. Then, the total size of the management information recording area 31 and the adjustment data recording area 32 to be secured between the position A and the position E-1 of the first recording layer 21 is 15Bh + 33DFh = 353 Ah sector. This size is smaller than the distance 3700 h sector between the position A and the position E-1. Therefore, if the tail position of the adjustment data AD is set to the position E-1, a clear area 33 is formed between the position C and the position K-1 of the first recording layer 21 as shown in FIG. be able to. The method of using the clear area 33 is not particularly limited as long as it does not violate the standard.

  Further, the embodiment as described above may be realized in a form integrally configured with hardware as a dedicated device, or may be realized by causing a computer to read a program. When the above embodiment is realized by causing a computer to read a program, a program describing a command for realizing the recording operation shown in FIG. 5 is created, and this program is read by the computer. Accordingly, the computer resources are caused to function as the area securing unit 11, the adjustment data recording unit 12, and the content data recording unit 13 illustrated in FIG.

  In FIG. 1, the area securing unit 11 is a specific example of the area securing unit, the adjustment data recording unit 12 is a specific example of the adjustment data recording unit, and the content data recording unit 13 is a specific example of the content data recording unit. is there. Also, the lead-in area 25 in FIG. 2 is a specific example of the inner peripheral area of the first recording layer, and the lead-out area 28 is a specific example of the inner peripheral area of the second recording layer. In FIG. 5, step S1 is a specific example of the area securing process, step S2 is a specific example of the adjustment data recording process, and steps S3 to S5 are specific examples of the content data recording process.

  FIG. 8 shows an embodiment of the recording apparatus of the present invention. A recording apparatus 100 in FIG. 8 is a recording apparatus that receives content data such as a TV program transmitted from a TV broadcasting station and records the data on a hard disk or a dual-layer DVD-R 200. For example, a TV tuner / hard disk drive This is a built-in DVD recorder. The recording apparatus 100 includes a television receiving circuit 101, an encoder 102, a hard disk drive 103, a disk recording control circuit 104, an optical pickup 105, a decoder 106, digital-analog converters 107 and 108, a CPU 109, a ROM 110, and a RAM 111.

  The recording apparatus 100 records content data transmitted from a television broadcast station on a hard disk as follows, for example. That is, the television receiving circuit 101 receives content data corresponding to a television program transmitted from a television broadcast station, and supplies this to the encoder 102. The encoder 102 encodes the content data supplied from the television receiving circuit 101 at a predetermined bit rate, and supplies this to the hard disk drive 103. The hard disk drive 103 records the content data supplied from the encoder 102 on the hard disk.

  The recording device 100 records content data transmitted from a television broadcast station on the double-layer DVD-R 200 as follows, for example. That is, the television receiving circuit 101 receives content data corresponding to a television program transmitted from a television broadcast station, and supplies this to the encoder 102. The encoder 102 encodes the content data supplied from the television receiving circuit 101 at a predetermined bit rate, and supplies this to the disc recording control circuit 104. The disc recording control circuit 104 controls the optical pickup 105 and records the content data supplied from the encoder 102 on the dual layer DVD-R 200.

  The recording apparatus 100 records content data on the dual-layer DVD-R 200 by the layer jump recording method. When performing layer jump recording of content data, the recording apparatus 100 performs the recording operation shown in FIG. That is, the ROM 110 stores a program for realizing the recording operation shown in FIG. The recording apparatus 100 performs the recording operation shown in FIG. When the recording apparatus 100 performs this recording operation, the CPU 109, the ROM 110, the RAM 111, the disk recording control circuit 104, and the like function as the area securing unit 11, the adjustment data recording unit 12, and the content data recording unit 13 shown in FIG.

  The recording device 100 has a function of reproducing content data recorded on the hard disk. The recording device 100 reproduces the content data recorded on the hard disk as follows, for example. That is, the hard disk drive 103 supplies the content data recorded on the hard disk to the decoder 106. The decoder 106 decodes the content data supplied from the hard disk drive 103, supplies the video data obtained by the decoding to the video digital-analog converter 107, and converts the audio data obtained by the decoding into audio digital- The analog converter 108 is supplied. The digital-analog converter 107 converts the video data supplied from the decoder 106 into an analog video signal, and outputs this video signal to, for example, a display panel (not shown) connected to the recording device 100. The digital-analog converter 108 converts the audio data supplied from the decoder 106 into an analog audio signal, and outputs the audio signal to, for example, a speaker (not shown) connected to the recording device 100.

  The recording apparatus 100 controls the optical pickup 105 to read the content data recorded on the double-layer DVD-R 200, and further controls the decoder 106 and the digital-analog converters 107 and 108 to reproduce the read content data. It has a function.

  The present invention can be changed as appropriate without departing from the gist or concept of the invention that can be read from the claims and the entire specification, and realizes a recording apparatus and a recording method that involve such a change, and these functions. The computer program to be included is also included in the technical idea of the present invention.

The recording apparatus and the recording method according to the present invention can be used for a recording apparatus that records information such as content data on a multilayer recording disk such as a dual-layer DVD-R. Further, the present invention can also be used in a recording device or the like that is mounted on or connectable to various computer equipment for consumer use or business use.

Claims (7)

At least a first recording layer irradiated with a light beam without passing through another recording layer; and a second recording layer irradiated with the light beam after passing through the first recording layer. Each of the recording layer and the second recording layer is a user data area in which a user is allowed to record content data, and is located outside the user data area and adjacent to an inner peripheral side end of the user data area A recording device for recording content data on a multi-layer recording disk having an inner peripheral area,
(a) area securing means for securing a management information recording area for recording management information inside the user data area of the first recording layer;
(b) present in the first recording layer,
Located outside the outer periphery of the management information recording area,
The first recording layer and the straight line that intersects the boundary position between the inner peripheral area of the second recording layer and the user data area of the second recording layer and extends parallel to the axis of the multilayer recording disk intersect. Adjustment data recording means for recording adjustment data in an adjustment data recording area including the position inside, and
(c) Content recording means for recording the content data in the user data area, each time the content data is divided into a plurality of data blocks each having a uniform size and each time one data block is recorded. Content data recording means for changing the recording layer in which the data block should be recorded,
Prior to recording one data block of the plurality of data blocks in a second data area included in the user data area of the second recording layer and adjacent to the inner peripheral area, the content data recording means, In the first recording layer, the adjustment data recording means records the adjustment data in the adjustment data recording area, and the content data recording means starts from a position adjacent to the outer peripheral side end of the adjustment data recording area. A recording apparatus for recording a data block to be recorded first among the plurality of data blocks in a first area from an outer peripheral end of the second area to an outer peripheral side.   Between the boundary position between the inner peripheral area of the second recording layer and the user data area of the second recording layer and the outer peripheral end position of the adjustment data recording area, the interlayer deflection of the light beam The recording apparatus according to claim 1, wherein a predetermined distance for removing or reducing the influence of is set in a radial direction of the multilayer recording disk.   The recording apparatus according to claim 2, wherein the predetermined distance is 9184 sectors.   The recording apparatus according to claim 1, wherein an inner circumferential side end of the adjustment data recording area is adjacent to the management information recording area.   The recording apparatus according to claim 1, wherein the adjustment data is dummy data. At least a first recording layer irradiated with a light beam without passing through another recording layer; and a second recording layer irradiated with the light beam after passing through the first recording layer. Each of the recording layer and the second recording layer is a user data area in which a user is allowed to record content data, and is located outside the user data area and adjacent to an inner peripheral side end of the user data area A recording method for recording content data on a multilayer recording disk having an inner peripheral area,
(a) an area securing step for securing a management information recording area for recording management information inside the user data area of the first recording layer;
(b) present in the first recording layer,
Located outside the outer periphery of the management information recording area,
The first recording layer and the straight line that intersects the boundary position between the inner peripheral area of the second recording layer and the user data area of the second recording layer and extends parallel to the axis of the multilayer recording disk intersect. An adjustment data recording process for recording adjustment data in an adjustment data recording area including a position inside;
(c) A content recording step of recording the content data in the user data area, wherein the content data is divided into a plurality of data blocks each having a uniform size, and each time one data block is recorded. And a content data recording process for changing a recording layer in which a data block is to be recorded,
Before the content data recording step records one data block of the plurality of data blocks in a second area adjacent to the inner peripheral area included in the user data area of the second recording layer, In the first recording layer, the adjustment data recording step records the adjustment data in the adjustment data recording region, and the content data recording step starts from a position adjacent to an outer peripheral side end of the adjustment data recording region. A recording method comprising: recording a data block to be recorded first among the plurality of data blocks in a first area extending from an outer peripheral end of the second area to an outer peripheral side.   A computer program for causing a computer to function as the recording apparatus according to claim 1.

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