WO2007037286A1

WO2007037286A1 - Recording device and recording method for recording information in information recording medium having a plurality of layers

Info

Publication number: WO2007037286A1
Application number: PCT/JP2006/319205
Authority: WO
Inventors: Hidehiro Ishii; Takao Sawabe
Original assignee: Pioneer Corporation
Priority date: 2005-09-27
Filing date: 2006-09-27
Publication date: 2007-04-05

Abstract

When two data blocks, which are to be successively reproduced and are recorded in a double layer recordable DVD such as a double layer DVD-R, are recorded in different layers and that a distance between the data blocks is longer than a prescribed distance, a notification of the fact that seamless reproduction of such data blocks is not guaranteed is given to a user, and reproduction management information indicating that the seamless reproduction of the data blocks is not guaranteed is recorded in the double layer recordable DVD.

Description

Specification

Recording apparatus and recording method for recording information on information recording medium having a plurality of layers

Technical field

TECHNICAL FIELD [0001] The present invention relates to a recording apparatus and a recording method for recording a blueprint on an information recording medium having a plurality of layers.

Background art

[0002] At present, write-once recording disks such as DVD-R and rewritable recording disks such as DVD-RW and DVD-RAM are widely used. Hereinafter, write-once DV D such as DVD-R and rewritable DVDs such as DVD-RW and DVD-RAM are referred to as “recordable DVD”.

[0003] VR (Video Recording) standards are defined for recordable DVDs. According to the VR standard, users can use a DVD recorder to record content data such as TV thread and other data on recordable DVDs. Can be edited.

[0004] For example, it is assumed that a user records a television program of a baseball game broadcast for about two hours on a recordable DVD of one layer. In this case, the content data of the television program is recorded in the user data area of the recordable DVD toward the outer peripheral side of the inner peripheral side force. For example, the data corresponding to the 1st table of the baseball game is recorded on the inner circumference side of the user data area, and the data corresponding to the 9th table is recorded on the outer circumference side of the user data area.

[0005] In this baseball game broadcast, popular baseball players hit home runs on the 1st and 9th tables, and the power of the game was very exciting. In such a case, according to the VR standard, the user leaves only the data corresponding to the 1st table and the data corresponding to the 9th table, deletes the data corresponding to the other times, and corresponds to the 1st table. And the data corresponding to the 9th table can be edited so that they can be played back seamlessly.

[0006] Now, in this case, the data corresponding to the one-time table is recorded on the inner circumference side of the user data area of the single-layer recordable DVD, and the data corresponding to the nine-time table is user data region It is recorded on the outer peripheral side. That is, the two data forces to be seamlessly reproduced are recorded in the user data area so as to be separated from each other.

[0007] In order to guarantee seamless reproduction of data that are recorded in the user data area with a large distance from each other, it is desirable to provide a stream buffer memory in the reproduction apparatus. That is, data reading is temporarily interrupted while the light spot jumps (searches) to the data recorded on the inner circumference side. In order to continue data reproduction during this time, the data is pre-read, the read data is stored in the stream buffer memory, and the reading of data is temporarily interrupted due to a light spot jump. The data stored in the stream buffer memory is consumed and the data reproduction is maintained.

[0008] Further, when it is difficult to mount a stream buffer memory having a large storage capacity in a playback device due to a demand for manufacturing cost reduction or the like, recording is performed on a recordable DVD to guarantee the seamless playback. In addition, it is necessary to add some restrictions on the structure of the data to be played and the structure of the playback device.

[0009] In the DVD standard, in order to guarantee seamless playback of data recorded in a separated state within the user data area of a single-layer recordable DVD, the following conditions are generally defined. And

(al) Data recorded in the user data area (CDA: Contiguous Data Area) must be physically continuous and have a size of at least 2 Mbytes.

(a2) The playback device shall have a stream buffer memory with a storage capacity of at least 16M bits.

(a3) In the playback device, no matter where you search on the disc, the search must be completed within 5 seconds.

[0010] Therefore, according to the DVD standard, as long as these conditions are satisfied, even if two pieces of data are recorded in a state where they are separated from each other in the user data area of a single-layer recordable DVD, Assures seamless playback of these data.

Disclosure of the invention

Problems to be solved by the invention [0011] Incidentally, a recordable DVD having two recording layers on one side, such as a DVD-R dual layer, is currently being developed.

[0012] When considering seamless playback of data in a two-layer recordable DVD, not only when two data are recorded in a state of being largely separated in the user data area of the same layer, but also two data It is also necessary to consider the case where is recorded in different layers. When the playback device searches between two data recorded in different layers, it is necessary to jump the light spot across the layers, and when jumping the light spot across the layers. It is necessary to consider that the jump operation may take a long time compared to the case of jumping the light spot in the same layer

[0013] In this regard, the DVD standard generally defines the following items for playback devices.

(bl) If the distance between two data recorded on different layers is ~ 5000 sectors, the jump must be completed within 1.4 seconds.

(b2) If the distance between two data recorded on different layers is 15001 to 65536 sectors, the jump must be completed within 1.5 seconds.

[0014] Here, when the above items (a3) and (b2) are compared and examined, if the distance between two data recorded in different layers is 65536 sectors or less, these Seamless playback of data is guaranteed.

[0015] However, when the distance between two data recorded in different layers is larger than 65536 sectors, seamless reproduction is not guaranteed.

[0016] As described above, in the VR standard, data recorded on the recordable DVD by the user can be edited later. Therefore, it may occur when two data to be reproduced sequentially are recorded in different layers and the distance between these data is larger than 65536 sectors.

[0017] Therefore, in spite of the expectation that the user can seamlessly play back the edited data, the seamless playback is not actually performed! /, And! / May occur. This disappoints the user's expectation and is not preferable. [0018] The present invention has been made in view of the above-described problems, and a first object of the present invention is to determine whether or not data reproduction is guaranteed in an information recording medium having a plurality of layers. An object is to provide a recording apparatus, a recording method, and a computer program that can be recognized by a playback apparatus or a user.

[0019] A second object of the present invention is to provide a recording device, a recording method, and a computer program that can improve the operability or reliability of data editing.

Means for solving the problem

In order to solve the above problems, a recording apparatus of the present invention is a recording apparatus that records information on an information recording medium having a plurality of layers, and is recorded in different layers or different layers. Distance recognition means for recognizing the distance between the first data block and the second data block to be recorded sequentially and the distance recognized by the distance recognition means is a predetermined distance. A distance determining means for determining whether or not the first data block is less than or equal to the predetermined distance based on a result of the determination by the distance determining means. And recording means for recording reproduction management information indicating that seamless reproduction is not guaranteed between the information recording medium and the second data block on the information recording medium.

In order to solve the above problems, the recording method of the present invention is a recording method for recording information on an information recording medium having a plurality of layers, which is recorded in different layers or different layers. The distance recognition step for recognizing the distance between the first data block and the second data block that are to be recorded in sequence and the distance recognized in the distance recognition step is predetermined. A distance determination step for determining whether or not the distance is less than or equal to a distance, and when the distance recognized in the distance recognition step is not less than or equal to the predetermined distance based on a result of the determination in the distance determination step, the first A recording step of recording, on the information recording medium, reproduction management information indicating that seamless reproduction is not guaranteed between the data block and the second data block.

[0022] In order to solve the above problems, a computer program of the present invention causes a computer to function as the recording device of the present invention (including various aspects thereof).

[0023] To solve the above problems, a computer program in a computer-readable medium is provided. The ram product clearly embodies program instructions that can be executed by a computer, and causes the computer to function as the recording device of the present invention (including various aspects thereof).

[0024] According to the computer program product of the present invention, the computer program product is read into a computer from a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk that stores the computer program product, or For example, if the computer program product, which is a transmission wave, is downloaded to a computer via communication means, the recording apparatus of the present invention described above 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 recording apparatus of the present invention described above.

[0025] These effects and other advantages of the present invention will become apparent from the following embodiments and examples.

Brief Description of Drawings

FIG. 1 is a block diagram showing an embodiment of a recording apparatus of the present invention.

FIG. 2 is an explanatory diagram showing a dual-layer recordable DVD.

3 is a flowchart showing a data editing operation in the recording apparatus in FIG.

4 is an explanatory diagram showing a recording state of the recordable DVD shown in FIG. 2. FIG.

FIG. 5 is a block diagram showing an embodiment of a recording apparatus of the present invention.

Explanation of symbols

[0027] 10, 100 recording device

11 Distance recognition unit

12 Distance judgment part

13 Recording section

14 Notification Department

15th layer judgment section

16 Distance measurement unit

BEST MODE FOR CARRYING OUT THE INVENTION

[0028] Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings in order for each embodiment. This will be explained.

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 information on a two-layer recordable DVD, for example, a DVD recorder. Two-layer recordable DVDs include, for example, DVD-R, DVD + R, DVD-RW, DVD + RW, and DVD-RAM. The double-layer information recording medium that can be handled by the recording apparatus of the present invention is not limited to a double-layer recordable DVD, and may be another double-layer information recording medium. In this embodiment, a two-layer information recording medium is illustrated, but application to a multilayer information recording medium having three or more layers is also possible without departing from the spirit of the present invention. The recording device of the present invention is not limited to a DVD recorder, and may be another recorder or a computer or a car navigation system having a function of recording information on an information recording medium. The information recorded on the double-layer information recording medium by the recording apparatus of the present invention is content data such as video data, image data, and audio data, or may be document data or numerical data. Information recorded on the double-layer information recording medium by the recording apparatus of the present invention includes management information or control information for managing or controlling the reproduction of content data.

As shown in FIG. 1, the recording apparatus 10 includes a distance recognition unit 11, a distance determination unit 12, a recording unit 13, and a notification unit 14.

[0031] The distance recognition unit 11 recognizes the distance between the first data block and the second data block that are to be recorded in different layers or to be recorded in different layers and that are to be sequentially reproduced. . The data block constitutes a part of information recorded on the recordable DVD by the recording device 10, and is, for example, CDA.

The distance recognition unit 11 includes a layer determination unit 15 and a distance measurement unit 16. The layer determining unit 15 determines whether or not the first data block and the second data block are recorded in different layers. The distance measuring unit 16 measures the distance between the first data block and the second data block. The distance recognition unit 11 includes, for example, an arithmetic processing device such as a CPU and an MPU, and a storage device such as a ROM (Read Only Memory) and a RAM (Random Access Memory).

[0033] The distance determination unit 12 recognizes the first data block and the second data recognized by the distance recognition unit 11. It is determined whether the distance from the tab block is equal to or less than a predetermined distance. The distance determination unit 12 includes, for example, an arithmetic processing device such as a CPU or MPU and a storage device such as a ROM or RAM.

[0034] When the distance between the first data block and the second data block recognized by the distance recognition unit 11 is not less than or equal to a predetermined distance based on the determination result of the distance determination unit 12, the recording unit 13 In addition, playback management information indicating that seamless playback is not guaranteed between the first data block and the second data block is recorded on a recordable DVD. The playback management information is, for example, a seamless flag (SML-FLG) in the video object information (VOBI) in the video manager information (VMGI). The recording unit 13 includes, for example, an arithmetic processing device such as a CPU and an MPU, and a control device that controls an optical system such as an optical pickup and a disk drive system such as a spindle motor.

[0035] Based on the determination result of the distance determining unit 12, the notifying unit 14 recognizes that the distance between the first data block and the second data block recognized by the distance recognizing unit 11 is not less than a predetermined distance. Notifies the user. The notification unit 14 includes, for example, an arithmetic processing device such as a CPU and an MPU, a storage device such as a ROM and a RAM, and a signal processing device that generates a video signal or an audio signal.

FIG. 2 shows a dual-layer recordable DVD on which information is recorded by the recording device 10.

In the first layer (layer 0) 21 of the dual-layer recordable DVD 20 in FIG. 2, a lead-in area 23 is formed on the inner circumference side, and a middle area 24 is formed on the outer circumference side. A user data area 25 is formed between the middle area 24 and the middle area 24. The second layer (layer 1) 22 of the dual-layer recordable DVD 20 has a middle region 26 formed on the outer peripheral side thereof, and a lead-out region 27 formed on the inner peripheral side. A user data area ₂₈ is formed between the terminal 27 and the user data area ₂₈ .

FIG. 3 shows the operation of the recording apparatus 10 during data editing. FIG. 4 shows a specific example of the recording state of the data block in the recordable type DV D20.

As shown in FIG. 4, for example, it is assumed that the user records three contents # 1, # 2 and # 3 on the recordable DVD 20 in this order using the recording device 10. As a result, data block 31 corresponding to content # 1 is recorded on the first layer of recordable DVD 20. The The first recording position of data block 31 is A, and the last recording position of data block 31 is immediately before B, that is, B-1. Further, following the data block 31, data blocks 32A and 32B corresponding to the content # 2 are recorded from the first layer to the second layer of the recordable DVD 20. The first recording position of data block 32A is B, and the last recording position of data block 32B is C1. Further, following the data block 32B, a data block 33 corresponding to the content # 3 is recorded on the second layer of the recordable DVD 20. The first recording position of data block 33 is C, and the last recording position of data block 33 is D-1.

It is assumed that the user inputs an instruction to edit content to the recording device 10 with respect to the recordable DVD 20 in such a recording state. Specifically, the user deletes the second half of content # 1 and all of content # 2, merges the first half (remainder) of content # 1 and content # 3, and apportions the first half of content # 1. Assume that you enter an instruction to play content # 3 next to the page. In response to this instruction, the recording apparatus 10 prevents the portion from the recording position E in the middle of the data block 31 to the recording position B-1 at the end of the data block 31 and all of the data blocks 32A and 32B from being reproduced. When management information related to playback (for example, program chain: PGC) is generated! /, Data editing work is performed. That is, the recording device 10 first reproduces data from the first recording position A of the data block 31 to immediately before the recording position E in the middle of the data block 31, that is, E−1, and then the first recording position of the data block 33. When the management information related to playback is generated so that the position C force is also recorded up to the last recording position D-1 of the data block 33, data editing work is performed. In this specific example, the data block 31 (the portion of the recording position A force up to E-1) corresponds to the first data block, and the data block 33 corresponds to the second data block.

In performing this data editing work, the recording apparatus 10 performs the operation shown in FIG.

[0041] First, the recording apparatus 10 determines whether or not the portion from the recording position A to E-1 and the data block 33 are recorded in different layers in the data block 31 (step S1).

Sl).

This determination is performed by the layer determination unit 15 as follows, for example. First, the stratum judgment unit 15 By referring to the management information related to the data block 31, the address or layer number of the location where the data block 31 (the portion up to the recording position A force E-1) is recorded is obtained. Subsequently, the layer determination unit 15 refers to the management information related to the data block 33 to acquire the address or layer number of the location where the data block 33 is recorded. Subsequently, the layer determining unit 15 records the data block 31 (the portion where the recording position A force is also up to E-1) and the data block 33 on different layers based on the acquired address or layer number. Whether or not.

[0043] When the data block 31 (the portion from the recording position A to E-1) and the data block 33 are recorded on different layers (step S1: YES), the recording apparatus 10 continues to the data The distance L1 between the block 31 (the portion where the recording position A force is also E-1) and the data block 33 is measured (step S2).

This measurement is performed by the distance measuring unit 16 as follows, for example. The distance measuring unit 16 first recognizes the recording position at the end of the data block to be reproduced first. Specifically, the distance measuring unit 16 recognizes the address of the recording position E-1 in the data block 31. The address of the recording position E-1 can be recognized based on the management information of the data block 31, for example. Subsequently, the distance measuring unit 16 recognizes the first recording position of the data block to be reproduced second. Specifically, the distance measuring unit 16 recognizes the address of the first recording position C of the data block 33. The address of the recording position C can be recognized based on the management information of the data block 33, for example. Subsequently, the distance measuring unit 16 recognizes a position corresponding to the last recording position of the data block to be reproduced first in the layer in which the data block to be reproduced second is recorded. Specifically, the distance measuring unit 16 recognizes the address of the position F corresponding to the recording position E-1 in the data block 31 in the layer in which the data block 33 is recorded, that is, the second layer. Subsequently, the distance measuring unit 16 calculates the absolute value of the difference between the position C and the position F. Specifically, the distance measuring unit 16 calculates the number of sectors corresponding to the absolute value of the difference between the address of the position C and the address of the position F. The method for measuring the distance between the data block 31 (the portion from the recording position A to E-1) and the data block 33 is not limited to this. For example, in the first layer, the address of the position G-1 corresponding to the recording position C of the data block 33 is recognized, and this address is recognized. The absolute value of the difference between the address and the address of the recording position E-1 of the data block 31 may be calculated.

[0045] It should be noted that, in the two-layer information recording medium, both a certain position P in the first layer and a position Q in the second layer corresponding to this position P extend in a direction perpendicular to the layer. It is not necessarily on the top. That is, the position Q is not necessarily located directly above the position P. In the case of a two-layer recordable DVD, the position P and the position Q are separated by a predetermined distance in the direction parallel to the layer (for example, the position Q is 23EOh on the inner circumference side of the position P) Is out of alignment). This takes into account the deviation between layers 0 and 1 of the light beam. From this point of view, also in FIG. 4, the position F corresponding to the position E-1 is not necessarily directly above the position E-1. Similarly, position G-1 corresponding to position C is not necessarily directly below position C.

[0046] Subsequently, the recording apparatus 10 determines whether or not the distance L1 between the data block 31 (the portion where the recording position A force is also E-1) and the data block 33 is equal to or less than the predetermined distance Lr. (Step S3). It is desirable that the value of the predetermined distance Lr is the maximum distance that guarantees seamless reproduction of two data blocks to be reproduced sequentially. The predetermined distance Lr is, for example, 65536 sectors. The predetermined distance Lr is stored in advance in a memory or the like (not shown) of the recording device 10.

[0047] The determination in step S3 is performed by the distance determination unit 12 as follows, for example. The distance determination unit 12 acquires the number of sectors corresponding to the absolute value of the difference between the address of the position C and the address of the position F calculated by the distance measurement unit 16. Subsequently, the distance determination unit 12 reads the value of the predetermined distance Lr from the memory of the storage device 10. Subsequently, the distance determination unit 12 compares the number of sectors corresponding to the absolute value of the difference between the address at the position C and the address at the position F with the value of the predetermined distance Lr (65,536 sectors).

[0048] When the distance L1 between the data block 31 (the portion from the recording position A to E-1) and the data block 33 is not equal to or less than the predetermined distance Lr (step S3: NO), the recording apparatus 10 Announcement is made (step S4). That is, according to the VR standard, when the distance between two data blocks recorded in different layers is larger than 65536 sectors, seamless reproduction between these data blocks is not guaranteed. Therefore, the distance L1 is predetermined When the distance is not less than Lr (65536 sectors), seamless reproduction between the data block 31 (part from the recording position A to E-1) and the data block 33 is not guaranteed. In this case, the recording apparatus 10 notifies the user of a message that seamless playback is not guaranteed as a result of data editing.

[0049] This notification is performed by the notification unit 14 as follows, for example. That is, the notification unit 14 reads message information stored in advance in a memory or the like of the recording device 10 from the memory, and the message information is displayed on a display device (for example, a display panel) connected to the recording device 10 or the like. Output.

[0050] Subsequently, the recording apparatus 10 asks the user whether or not the data editing is really executed (step S5). In other words, the recording device 10 confirms with the user whether or not editing can be executed even if seamless playback is not guaranteed.

[0051] When the user inputs an instruction to execute data editing to the recording device 10 (step S5: YES), the recording device 10 executes data editing (step S6). Specifically, the recording apparatus 10 first plays back the recording positions A to E-1 of the data block 31 and then reproduces the recording positions C to D-1 of the data block 33. In addition, management information related to reproduction is generated.

Subsequently, the recording device 10 sets the reproduction management information (eg, seamless flag) to, for example, “0” (step S 7). In this case, the reproduction management information being “0” indicates that seamless reproduction is not guaranteed between the two data blocks. When the playback management information is “1”, seamless playback is guaranteed between the two data blocks.

Next, the recording device 10 records the reproduction management information on the recordable DVD 20 (step S8). Recording of reproduction management information is performed by the recording unit 13. For example, the recording unit 13 preferably records the reproduction management information as the management information regarding the data block 33 to be reproduced second. The reproduction management information is recorded in, for example, a management information block 34 recorded immediately after the data block 33 recorded last on the recordable DVD 20. Note that the playback management information may be recorded in the management information recording area 35 reserved at the top of the first layer user data area 25 of the recordable DVD 20! / ヽ. As described above, the data editing operation is completed. By the operations in steps S6 to S8, the recordable DVD 20 is first reproduced from the recording position A force of the data block 31 up to E-1 and subsequently from the recording position C to D-1 of the data block 33. Management information with the content of being recorded is recorded. In addition, the recordable DVD20 does not guarantee seamless playback between the data block 31 (the portion where the recording position A force is up to E-1) and the data block 33! The reproduction management information indicating that is recorded.

[0055] On the other hand, when the user inputs an instruction to the effect that data editing is not performed in step S5 (step S5: NO), the recording device 10 performs data editing and playback. The data editing operation is terminated without recording (changing) the management information.

[0056] On the other hand, when data block 31 (part from recording position A to E-1) and data block 33 are recorded on the same layer (step SI: NO), or these data blocks are When data is recorded on different layers and the distance L1 between these data blocks is less than or equal to the predetermined distance Lr (step S1: YES and step S3: YES), the recording apparatus 10 uses data block 31 (recording position A force is also E—Parts up to 1) and data block 33 can be played back seamlessly to satisfy the buffer model (that is, the buffer capacity so that overflow and underflow do not occur in the playback device's notifier memory). Judgment is made as to whether or not the force can be optimized (step S9).

[0057] When the notifier model is not satisfied (step S9: NO), the recording apparatus 10 notifies as described above (step S4), and when the user's power is also instructed to edit the data, the data editing and reproduction are performed. Record management information (steps S5, S8).

[0058] On the other hand, when the notch model is satisfied (step S9: YES), the recording apparatus 10 immediately executes data editing without making a notification (step S10). Subsequently, the recording device 10 sets the reproduction management information to, for example, “1” (step S11), and records this reproduction management information on the recordable DVD 20 (step S12).

[0059] By the operations of steps S10 to S12, the recordable DVD 20 is first reproduced from the recording position A force of the data block 3 1 up to E-1 and subsequently the recording position C force of the data block 33 is also D. Management information having contents such as that up to -1 is reproduced is recorded. Furthermore, the recordable DVD 20 has a data block 31 (parts from recording positions A to E-1). Minutes) and data block 33, playback management information indicating that seamless playback is guaranteed is recorded.

[0060] If the buffer model is not satisfied in step S9, the buffer model from the recording position A to E-1 of the data block 31 is considered, and the bit rate of the data block 33 is set so as to satisfy the buffer model. The data block 33 with the changed bit rate may be recorded on the recordable DVD 20 again. As a result, seamless playback will be realized if the noffer model is satisfied, so there is no need to make a notification. In this case, the reproduction management information is set to “1” and is recorded on the recordable DVD 20.

[0061] As described above, in the recording device 10, when the distance between two data blocks recorded in different layers is larger than a predetermined distance, seamless reproduction is not guaranteed between these data blocks. Reproduction management information indicating that is recorded on the recordable DVD 20. This allows the playback device to recognize whether seamless playback is guaranteed between two data blocks recorded in different layers.

[0062] Further, in the recording apparatus 10, when the distance between two data blocks recorded in different layers is larger than a predetermined distance, a notification that seamless reproduction is not guaranteed between these data blocks. I do. This allows the user to recognize whether seamless playback is guaranteed between two data blocks recorded in different layers.

[0063] Further, before actually executing the data editing, the recording apparatus 10 notifies that the seamless reproduction between the data blocks is not guaranteed as a result of the editing, and reconsiders whether or not the data editing is possible. Give users the opportunity to This allows the user to edit data according to his / her intention. Thus, according to the recording apparatus 10, the operability and reliability of the recording apparatus can be improved.

[0064] In the above description, for the two data blocks already recorded on the recordable DVD 20, it is determined whether these data blocks are recorded in different layers! An example is given of determining whether the distance between these data blocks is less than a predetermined distance, determining whether the force satisfies the nota model, setting notification, and playback management information. However, the present invention is not limited to this. For two data blocks that have not yet been recorded on the recordable DVD 20 and are going to be recorded on the recordable DVD 20, it is possible to determine whether these data blocks are recorded in different layers. It may be determined whether the distance between data blocks is a predetermined distance or less, whether the force satisfies the nota model, notification, and reproduction management information.

[0065] In addition, the data block to be reproduced first is already recorded on the recordable DVD 20, and the data block to be reproduced second is not yet recorded on the recordable DVD 20. , Judgment on whether or not the power of these data blocks is recorded in different layers, Judgment on whether the distance between data blocks is below a predetermined distance, Judgment on whether or not the buffer model is satisfied, Notification and playback management Set the information.

[0066] For example, in a continuous TV drama that is broadcast every week, the user records the content data of the first episode aired last week on a recordable DVD 20, deletes the tail part of this content data, The content data of episode 2 aired this time will be recorded on recordable type DVD20. In this case, before the recording of the content data of the second episode, the data block of the first episode and the data block of the second episode are recorded in different layers, and whether or not they are Judgment, whether or not the distance between data blocks is less than or equal to the predetermined distance, whether or not the buffer model is satisfied, notification, and playback management information are set. When the data block of Episode 1 and the data block of Episode 2 are recorded on the same layer, or when they are recorded on different layers and the distance between them is equal to or less than a predetermined distance, Episode 2 For the recording of the data block of, consider the buffer model of the data block of the first episode and set the bit rate of the data block of the second episode to satisfy the buffer model. This enables seamless playback of both data blocks.

[0067] 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-described embodiment is realized by causing a computer to read a program, a program representing the data editing operation shown in FIG. 3 is created and read by the computer, and the distance recognition unit shown in FIG. 11, distance determination unit 12, recording unit 13 And let the computer function as the notification part 14.

In addition, steps S1 and S2 in FIG. 3 are specific examples of the distance recognition process, step S3 is a specific example of the distance determination process, and steps S7 and 8 are specific examples of the recording process. Example

FIG. 5 shows an embodiment of the recording apparatus of the present invention. A recording device 100 in FIG. 5 is a recording device that receives content data such as a television program transmitted from a television broadcasting station and records it on a hard disk or a dual-layer DVD-R200. This is a DVD recorder with a built-in tuner node disk drive. 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 RAMI 11.

[0070] The recording device 100 records content data transmitted from a television broadcasting station on a node disk, for example, as follows. That is, the television receiving circuit 101 receives content data corresponding to a television program transmitted from a television broadcast station and supplies it 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 node 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 a dual-layer DVD-R200 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 it 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 with the encoder 102 force on the dual-layer DVD-R 200.

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, for example, as follows. That is, the hard disk drive 103 is recorded on the hard disk. The recorded content data is supplied 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 the audio data obtained by the decoding is digital for audio. -Supply to analog converter 108. The digital-analog converter 107 converts the video data supplied from the decoder 106 into an analog video signal, and outputs the video signal to, for example, a display panel connected to the recording device 100. Further, the digital-analog converter 108 converts the audio data supplied from the decoder 106 into an analog audio signal, and outputs this audio signal to, for example, a speaker connected to the recording apparatus 100.

[0073] The recording apparatus 100 controls the optical pickup 105 to read the content data recorded on the double-layer DVD-R200, and controls the decoder 106 and the digital / analog converters 107 and 108 to reproduce the read content data. It has a function.

The recording device 100 has a function of editing content data recorded on a dual-layer DVD-R200. That is, a program showing the data editing operation shown in FIG. The recording device 100 performs the data editing operation shown in FIG. When the recording apparatus 100 performs this data editing operation, the CPU 109, the ROM 110, the RAMI 11, and the like function as the distance recognition unit 11 and the distance determination unit 12 shown in FIG. Further, the CPU 109, ROM 110, RA Mil, and disk recording control circuit 104 function as the recording unit 13 shown in FIG. Further, the CPU 109, ROM 110, RAMI 11, decoder 106, and digital-analog converters 107 and 108 function as the notification unit 14 shown in FIG.

It should be noted that the present invention can be changed as appropriate within the scope of the claims and the whole description and does not violate the gist or philosophy of the invention, and a recording apparatus and a recording method with such a change, and Computer programs that realize these functions are also included in the technical idea of the present invention.

Industrial applicability

The recording apparatus and recording method according to the present invention can be used for a recording apparatus that records information on a recordable information recording medium having a plurality of recording layers. For example, consumer It can also be used in a recording device or the like that is mounted on various computer equipment for business use or business use or that can be connected in various views.

Claims

The scope of the claims

[1] A recording apparatus for recording information on an information recording medium having a plurality of layers,

Distance recognition means for recognizing the distance between the first data block and the second data block to be recorded in mutually different layers or to be recorded in mutually different layers and to be sequentially reproduced; ,

Distance determination means for determining whether or not the distance recognized by the distance recognition means is equal to or less than a predetermined distance;

Based on the determination result of the distance determination means, seamless reproduction is guaranteed between the first data block and the second data block when the distance recognized by the distance recognition means is not less than or equal to the predetermined distance. A recording device comprising: recording means for recording reproduction management information indicating the effect on the information recording medium.

[2] The distance recognition means includes

Layer determining means for determining whether or not the first data block and the second data block are recorded in different layers;

The recording apparatus according to claim 1, further comprising distance measuring means for measuring a distance between the first data block and the second data block.

[3] The recording apparatus according to claim 1, wherein the predetermined distance value is a maximum distance value at which seamless reproduction between two data blocks is guaranteed.

[4] The recording apparatus according to claim 1, wherein the predetermined distance is 65536 sectors.

5. The recording unit according to claim 1, wherein the recording unit records the reproduction management information as management information related to the second data block to be reproduced following the first data block. Recording device.

[6] The playback management information according to claim 1, wherein the playback management information is a seamless flag (SML-FLG) in video object information (VOBI) in video manager information (VMGI). Recording device.

[7] A notifier that notifies the user when the distance recognized by the distance recognition means is not less than or equal to the predetermined distance based on the determination result of the distance determination means. The recording apparatus according to claim 1, further comprising a step.

[8] A recording method for recording information on an information recording medium having a plurality of layers,

A distance recognition step for recognizing the distance between the first data block and the second data block that are recorded in mutually different layers or are to be recorded in mutually different layers and that are to be reproduced sequentially; ,

A distance determination step of determining whether or not the distance recognized in the distance recognition step is a predetermined distance or less;

Based on the determination result in the distance determination step, the distance recognition step! When the recognized distance is not less than or equal to the predetermined distance, reproduction management information indicating that seamless reproduction is not guaranteed between the first data block and the second data block is stored in the information recording medium. And a recording step of recording on the recording method.

[9] A computer program for causing a computer to function as the recording device according to claim 1.