JP2003007035A - Data recording method, and data recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that the same disk can not be reproduced by a DVD reproducing device and a DVD recording and reproducing device since a DVD-R can be read out by the both devices but there is no compatibility between respective reproducing and special reproducing systems. SOLUTION: A system stream of a DV is recorded in a program area and navigation of a VR is recorded outside a read-out area. When a reproducing is conducted on the DVD recording and reproducing device, the VR navigation information recorded outside the read-out area is read and used so that no need to change the system constitution and a reproducing of the DVD-R and a special reproducing are realized on the DVD recording and reproducing device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for recording coded information on a recording medium.

[0002]

2. Description of the Related Art 1 as a recordable DVD optical disk
Recordable DVD-R (DVD Recordable), rewritable DVD-RAM (DVD Random Access), D
There are VD-RW (DVD ReWritable) and the like.

A moving image and a sound are synchronized with each other, and a recording medium such as an optical disk such as a DVD-RAM (DVD Random Acces) is used.
s), DVD-RW (DVD ReWritable), DVD-R (D
Japanese Patent Laid-Open No. 11-155131 discloses a method of storing in a VD recordable) in real time. Hereinafter, this is referred to as Reference Example 1 (referred to as VR (Video Recording)), and this device is referred to as a DVD recording / reproducing device. The configuration of the system stream of Reference Example 1 is shown in FIG.

The system stream is composed of at least one video object (VOB, VideoOBject). Here, VOB # 1 will be described as an example.
VOB is a series of system streams from the start of recording to the end of recording. The VOB is composed of several video object units (VOBU, Video OBject Unit). A VOBU is at least one G consisting of picture data whose reproduction time is approximately 0.4 seconds to 1.0 seconds.
It is a unit including OP (Group of Pictures) and audio data multiplexed with this picture data.
At least one video pack (V_PCK) for VOBU
Composed of. If an audio stream exists, an audio pack (A_PCK) is also included. V_PCK, A
The pack length of _PCK is 2048 bytes.

In order to perform the reproduction and the special reproduction, the reproduction and the special reproduction are executed by using the navigation information (hereinafter referred to as VR navigation information) in which the system stream information and the VOBU information are recorded in addition to the system stream. .

Further, there is Japanese Patent Laid-Open No. 8-273304 as a method of reproducing by a reproduction-only device without having a recording section of DVD. Hereinafter, this is referred to as Reference Example 2 (referred to as DV (DVD Video)), and this device is referred to as a DVD reproducing device. Reference example 2
The configuration of the system stream of will be described with reference to FIG. At least 1 video object set (VOBS)
It is composed of one video object (VOB, Video Object), VOB is composed of at least one cell (Cell), Cell is composed of at least one or more video object units (VOBU, Video Object Unit), and VOBU is always It is composed of one navigation pack (NV_PCK) and at least one video pack (V_PCK). If an audio stream exists, an audio pack (A_PCK) is also included. NV_PCK, V
The pack length of _PCK and A_PCK is 2048 bytes.

In order to perform reproduction and special reproduction, reproduction information and special reproduction are performed using navigation information (hereinafter referred to as DV navigation information) in which system stream information is recorded in addition to the system stream and NV_PCK in the system stream. Is executed.

[0008]

DVD-ROM and DV are available as DVD recording media that can be read by a DVD reproducing apparatus.
They are D-R and DVD-RW. On the other hand, as a recording medium that can be read by the DVD recording / reproducing apparatus, a DVD-ROM, a DV
They are DR, DVD-RW, and DVD-RAM. Therefore, when recorded on the DVD-R, it can be read by either device. However, there is no compatibility because the method of reproduction and special reproduction in the DVD reproducing apparatus is different from the method of reproduction and special reproduction in the DVD recording and reproducing apparatus.

It is an object of the present invention to provide a DVD reproducing apparatus or an information recording method for ensuring reproduction compatibility with a DVD recording / reproducing apparatus when reproducing information recorded on a recording medium. Further, another object of the present invention is to provide a DVD recording / reproducing apparatus which enables reproduction equivalent to the case of reproducing a recorded recording medium by the recording method by a DVD reproducing apparatus.

In other words, when reproducing the same recording medium, it is intended to enable almost the same operability between the DVD reproducing apparatus and the DVD recording / reproducing apparatus.

Alternatively, the optical disc reproducing device (dedicated to reproducing optical discs) and the optical disc recording / reproducing device (recording / reproducing device capable of recording / reproducing with respect to the optical disc) can reproduce substantially the same operability in reproducing the same recording medium. It is to provide a method of recording information on a recording medium. Further, the optical disc recording / reproducing apparatus reproduces the recording medium recorded by the recording method,
It is an object of the present invention to provide an optical disc recording / reproducing device which can be performed in the same manner as the reproducing process of the optical disc reproducing device.

[0012]

To reproduce a DVD-R on a DVD reproducing apparatus, it is necessary to finalize it.
DVD-R after finalization in DVD playback device
Cannot read the data in the outer peripheral portion of the lead-out area. On the other hand, in the DVD recording / reproducing apparatus, it is possible to read even the data in the outer peripheral portion of the lead-out area.

Utilizing this feature, the present invention records the DV system stream and DV navigation information in the program area, and records the VR navigation in the outer peripheral portion rather than the lead-out area. The DV navigation information recorded in the program area is read and used for reproduction by the DVD reproducing apparatus, while the VR navigation information recorded outside the lead-out area is reproduced for reproducing by the DVD recording / reproducing apparatus. By reading and using, the playback and special playback can be realized without changing the system configuration. Information (for example, video information, audio information, etc.) is recorded on a recording medium based on the DVD-Video standard, and navigation information (DV navigation information) related to the information recorded on the recording medium is recorded on the basis of the DVD-Video standard. Is created and recorded on a recording medium.

On the other hand, a DVD-recorded on the recording medium
Data reproducing device based on information based on the Video standard
Navigation information (RV navigation information) that can be reproduced by an apparatus that reproduces information (based on the DVD-Recording standard) is created and recorded on the recording medium.

At this time, when the recording medium is finalized, the RV navigation information is recorded on the outer peripheral portion (for example, outside the lead-out area) that cannot be reproduced in the DVD-Video standard. To do so. The data reproducing device (DVD-Rec
(A device that reproduces information based on the ordering standard)
Performs the reproduction processing based on the RV navigation information recorded on the outer peripheral portion.

In the DVD-Video standard, the information to be recorded on the outer peripheral portion (for example, outside the lead-out area) that cannot be reproduced is not limited to the RV navigation information, but is recorded as described above. The information provided
VD-Video standard or DVD-Record
Based on the ing standard, the information necessary for providing compatibility during reproduction may be created and recorded in advance. Also, at the time of reproducing information, by reproducing the information that is required for compatibility, the DVD-Video standard or the DVD-Rec
Based on the ordering standard, it is possible to provide reproduction compatibility when reproducing.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As a first embodiment, a system configuration at the time of recording is shown in FIG. 1, and a flowchart of recording processing is shown in FIG.

In FIG. 1, 101 is a video processing unit and 1
Reference numeral 02 is an audio processing unit, 103 is a multiplexing unit, 104 is a disk control unit, 105 is a VR navigation processing unit,
106 is a DV navigation processing unit, 107 is a user input / output unit, 108 is a user input / output terminal, and 109 is a DV
It is a D-R recording medium.

An image captured by a camera or line input is processed by the video processing unit 101 in MPEG2 (Moving Picture).
The compression processing is performed by the Experts Group) method or the MPEG1 method. Audio captured by a microphone or line input is processed by the audio processing unit 102 in an MPEG Audio system, a Dolby AC-3 system, or a linear PC without compression.
Processed by M. In the multiplexing unit 103, the video processing unit 10
Video data compressed by 1 and audio processing unit 102
The system stream with NV_PCK shown in FIG. 5 is generated in synchronization with the audio data processed in step S1, and the stream with NV_PCK is sequentially recorded in the program area (S601).

Here, NV_PCK is shown in the upper diagram of FIG. N
V_PCK is placed at the beginning of VOBU. NV_PC
K is a pack header (Pack_Header) 501, a system header (System_Header) 502, and a PCI packet (P
CI_PKT) and DSI packet (DSI_PKT). The PCI packet has a packet header (Pack
et Header), 504 substream ID (Sub_strea
m_id) and 505 PCI data. DSI
The packet has a packet header (Packet Heade) of 506.
r), 507 substream ID (Sub_stream_id),
It is composed of 508 DSI data. The stream ID of the packet header 503 of the PCI packet is 0xBF (private stream 2), and the substream ID 5
04 is 0x00. The stream ID of the packet header 506 of the DSI packet is 0xBF (private stream 2), and the substream ID 507 is 0x01.

The PCI packet contains navigation data for controlling the reproduction of the VOBU, and the DSI packet contains several hundreds of Vs before and after necessary for realizing the special reproduction.
Contains the start address of OBU.

Next, a method of generating DSI packet information will be described.

Start address of VOBU in the reverse direction (VOBU address temporally past the currently generated VOBU)
Can be realized by backing up the start address of each VOBU. However, the start address of the forward VOBU to be generated (the currently generated VOBU
It is impossible to pre-calculate a VOBU address that is more future in time. Therefore, in the present invention, video compression is set to a fixed rate. Audio is always compressed at a fixed rate, but video is difficult to compress with the same size for each VOBU (GOP). By adjusting the video compression rate with padding packets or stuffing, it is possible to easily process each VOBU with the same size. However, in the present invention, instead of using the padding packets to make each VOBU the same size (the number of packs), a private stream is used. Each VOBU had the same size.

A method of this fitting will be described with reference to FIG. The lower part of FIG. 5 shows the structure of the private stream.

509 is a pack header, 510 is a packet header, 511 is a substream ID, and 512 is private data. There are two types of private streams, and they are divided into a private stream 1 (private_stream_1) and a private stream 2 (private_stream_2) by a stream ID (stream_id). The stream ID of private stream 1 is 0xBD, and the stream ID of private stream 2 is 0xBF.
Is.

In the DVD reproducing apparatus, the private stream 1 is a sub picture stream, Dolby AC-
3, used for linear PCM, etc. Private stream 2 is used as NV_PCK and PCI packet, D
Used for SI packets.

On the other hand, in the DVD recording / reproducing apparatus, the private stream 1 is used for a sub-picture stream, Dolby AC-3, linear PCM, etc. Private stream 2 is RDI (Real time Data Informati)
on), RDI is information not related to playback,
For example, the manufacturer name and the like are recorded.

These are substream IDs (sub_stream
_id) is assigned to each. In the present invention,
When the private stream 1 is used, the substream ID 511 is 0xFF (a stream defined by the provider), and all the private data 512 is 0xFF. When using private stream 2, sub-stream ID 511 is 0xFF (provider-defined stream) and ES (Elementary Stream) is all 0xFF
And Since the substream ID 0xFF (stream defined by the provider) is used for bitstream identification freely defined by the provider, this private pack is ignored when played back on a DVD playback device and DVD recording / playback device. It will be.

By generating such a stream,
The size (the number of packs) generated by each VOBU is always constant. Therefore, since the size (the number of packs) of each VOBU is the same, it becomes possible to easily calculate the start address of the VOBU to be generated.

During recording, the system stream is sequentially recorded in the program area by the disc control unit 104, and VR navigation information from the outer periphery of the disc is sequentially recorded by the disc control unit 104 (S602). The VR navigation information includes VOB information and information related to VOBU. The reason for using the VR navigation information as the navigation information recorded on the outer circumference of the disc is that it is suitable for real-time recording. The reason for recording the VR navigation information on the disc without temporarily storing it in the memory is to enable additional recording even when recording → recording stop → power off → recording. Even if VR navigation information is stored in the memory during recording and is recorded on the outer periphery of the disk when the power is off, the same operation is performed.

Next, S601 and S602 are repeated until the recording is completed (S603). When recording is completed, the user is asked whether to finalize (S60
4). If you do not want to finalize, just exit,
When finalizing, DV navigation information is generated from the VR navigation information recorded on the outer periphery and recorded in the program area (S605). After that, finalize and finish. FIG. 7 shows the state of the disc during the recording operation, and FIG. 8 shows the state of the disc after the finalization.

In FIG. 7, an unrecorded area 701 is preliminarily provided as a lead-in area (recording management information for managing the recording state of the disc) during finalization. NV_PC in the program area 702
The stream with K is sequentially recorded and the program area is increased and recorded. The unrecorded area 703 is an area used as a lead-out area (recording dummy data for overrun at the time of seek) at the time of finalization, and this area is used when the program area increases or the TEMP area 704 increases. VR navigation information is sequentially recorded in the TEMP area 704.
Increase and record.

In FIG. 8, reference numeral 801 denotes a lead-in area, 8
Reference numeral 02 is a program area in which the NV_PCK-attached stream and DV navigation information are recorded, 803 is a lead-out area, 804 is an unrecorded area in which no data is recorded, and 805 is a TEMP area in which VR navigation information is recorded. is there. When finalizing, DV navigation information is generated from VR navigation information (S605). Finally, the respective data is recorded in the lead-in area 801 and the lead-out area, and the finalization is completed.

As a second embodiment, a case where the user decides whether to generate VR data or DV data at the time of finalization and generates navigation information according to the decision will be described. A flowchart of this operation is shown in FIG.

When recording is started, NV_ appears in the program area.
Streams with PCK are sequentially recorded (S901).
VR navigation information is sequentially recorded from the outer periphery of the disc (S902). Until the end of recording S901 and S902
Is repeated (S903). When recording is finished, the user is asked whether to finalize (S90
4). If you do not want to finalize, just exit,
When finalizing, the user is asked whether to generate VR data or DV data (S
905).

When the VR data is generated, the VR navigation information recorded on the outer circumference is copied (S90).
6) Then, when the DV data is generated, the DV navigation information is generated from the VR navigation information recorded on the outer circumference (S907). After that, finalize and finish.

The state of the disc during recording is shown in FIG. 7, and the state of the disc after finalization will be described with reference to FIG. The stream with NV_PCK and the navigation information of the VR recorded on the outer circumference are copied to the program area of 802 when the user decides VR, and the navigation of the VR recorded on the outer circumference is copied when the user decides DV. To generate DV navigation information.

Next, the reproducing operation will be described. When the DV navigation information is recorded in the program area, in the lead-in area 801, the program area 802 and the lead-out area 803 of FIG.
It is the same as the case of recording by the V method. Since the operation of reproducing this disc by the DVD reproducing apparatus is the same as usual, the details of this operation are omitted.

Here, a case will be described in which, when DV navigation information is recorded in the program area, the DVD-R is reproduced by the DVD recording / reproducing apparatus. The system configuration of the DVD recording / reproducing apparatus is shown in FIG.

Reference numeral 201 is a DVD-R recording medium, 202 is a disk control unit, 203 is a separation unit, 204 is a video processing unit, 205 is an audio processing unit, and 206 is a VR navigation processing unit.

The system stream is read from the data recorded in the recording medium 201 with the configuration shown in FIG. 8 by the disk control unit 202 and transferred to the separation unit 203.
The system stream recorded on the recording medium 201 has NV_PCK, but the stream ID of NV_PCK is private packet 2 (0xBF). Private packet 2 (0xBF) in VR is RDI (Real time)
It is used as Data Information), but can be identified by the substream ID (0x50).

As explained above, the substream ID used in NV_PCK is the DSI packet.
It is 0x00 and 0x01 in the DSI packet. Therefore, NV_PCK is normally ignored in the DVD recording / reproducing apparatus.

The disk control unit 202 displays VR navigation information used in VR reproduction and special reproduction as shown in FIG.
Read from the area 805.

In the DVD reproducing apparatus, the data outside the lead-out area 803 cannot be read, but in the DVD recording / reproducing apparatus, the lead-out area 8 is used.
It is possible to read the data in the TEMP area 805 of No. 03. Therefore, instead of the DV navigation information recorded in the program area 802, the TEMP
By using the VR navigation information recorded in the area 805, VR reproduction and special reproduction can be performed.

The separation unit 203 separates the video data into audio data, and the video data is processed by the video processing unit 204.
And is expanded and output to a monitor or the like. On the other hand, the separated audio data is transferred to the audio processing unit 205, and if the audio data is compressed, it is expanded and output to a speaker or the like.

When VR navigation information is recorded in the program area, the operation is the same whether VR navigation information recorded on the outer circumference or VR navigation information recorded in the program area is used. Therefore, detailed description is omitted.

[0047]

The DVD-R recorded by the present invention is a DVD
The playback device can play back normally, and the same disc is DV
It can also be reproduced by the D recording / reproducing apparatus.

In the reproduction of the DVD-R, the DVD reproduction apparatus or the DVD recording / reproduction apparatus can perform special reproduction and the like, and the compatibility can be ensured.

[Brief description of drawings]

FIG. 1 is a diagram showing a system configuration of a data recording / reproducing apparatus of the present invention.

FIG. 2 is a diagram showing a system configuration of a data recording / reproducing apparatus of the present invention.

[Fig. 3] Fig. 3 is a diagram for describing the configuration of a system stream of Reference Example 1.

[Fig. 4] Fig. 4 is a diagram for describing the configuration of a system stream of Reference Example 2.

FIG. 5 is a diagram illustrating the configuration of a pack.

FIG. 6 is a flowchart illustrating a recording operation of the present invention.

FIG. 7 is a diagram illustrating a configuration of a disc during a recording operation.

FIG. 8 is a diagram illustrating a configuration of a disc after finalization.

FIG. 9 is a flowchart illustrating a recording operation of the present invention.

[Explanation of symbols]

101 ... Video processing unit 102 ... Audio processing unit 103 ... Multiplexing unit 104 ... Disk control unit 105 ... VR navigation processing unit 106 ... DV navigation processing unit 107 ... User input / output section 108: User input / output terminal 109 ... Recording medium

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) G11B 27/034 H04N 5/85 Z H04N 5/85 5/91 Z 5/91 G11B 27/02 K (72) Inventor Junji Shiokawa 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa, Ltd. Digital Media Development Division, Hitachi, Ltd. (72) Inventor Yukio Isobe 292, Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa Prefecture F, Hitachi, Ltd. Digital Media Development Headquarters Term (reference) 5C052 AA02 AB03 AB04 AB05 AC01 CC06 DD04 5C053 FA24 GB06 GB11 GB21 HA21 JA21 5D044 AB05 AB07 BC05 CC06 DE02 DE03 DE24 DE29 DE45 DE53 DE57 DE58 DE92 FG23 GK12 5D090 AA01 BB03 CC14 DD03 GG17A27 A110A29 A4 DC22 DE01

Claims (12)

[Claims] 1. A DVD-R (DVD Recorda) which is a write-once recording medium.
A data recording / reproducing apparatus for recording data in a ble), which generates a video processing section for compressing video data, an audio processing section for compressing audio data, and a system stream including a video stream and an audio stream. A multiplexing unit, a disc control unit that records data on a recording medium, a DV (DVD Video) navigation processing unit that generates navigation information necessary for reproduction by a DVD reproducing device, and a DVD recording and reproducing device for reproducing. VR (Video R required for
ecording) A data recording / reproducing device, comprising: a navigation processing unit. 2. A data recording / reproducing apparatus according to claim 1, wherein a DV system stream is recorded in a program area of a DVD-R, and VR navigation information is recorded on an outer circumference of a disc. . 3. The data recording / reproducing apparatus according to claim 1, wherein a DV system stream is recorded in a program area of a DVD-R, VR navigation information is stored in a memory, and a memory is stored when the system is powered off. The data recording / reproducing apparatus characterized in that the VR navigation information of (1) is recorded on the outer periphery of the disc to turn off the power of the system. 4. The data recording / reproducing apparatus according to claim 1, wherein a DV system stream is recorded in a program area of a DVD-R, VR navigation information is stored in a memory, and the VR navigation information in the memory is stored on the outer periphery of the disc during finalization. A data recording / reproducing apparatus characterized in that the data is recorded on. 5. The data recording / reproducing apparatus according to claim 1, wherein when the finalizing operation is executed, the DV navigation information is recorded in the program area of the DVD-R from the VR navigation information recorded on the outer periphery of the disc. Data recording / reproducing device. 6. The data recording / reproducing apparatus according to claim 1, wherein desired navigation information is generated and recorded in a program area of a DVD-R from VR navigation information recorded on the outer periphery of the disc when a finalizing operation is executed. A data recording / reproducing apparatus characterized by: 7. The system stream to be recorded in the program area of a DVD-R according to claim 1, claim 2, claim 3 or claim 4, wherein a private stream is used for each VOBU (Vi
deo Object Unit) has the same size (number of packs). 8. A disc control unit for reading a system stream or data recorded on the outer periphery of the disc from a DVD-R which is a write-once recording medium, and a video stream and an audio stream from the system stream read from the disc. A separation unit that separates the video stream, a video processing unit that expands the video stream, an audio processing unit that expands the audio stream if the audio stream is compressed, and a VR navigation processing unit that processes the navigation data recorded on the outer circumference of the disc. A data recording / reproducing apparatus characterized in that 9. The data recording / reproducing apparatus according to claim 8, wherein the disk control section reads out VR navigation information recorded on the outer circumference of the disk. 10. A data recording / reproducing apparatus according to any one of claims 2 to 6 and claims 8 and 9, wherein the outer periphery of the disc is an outer periphery of the lead-out area. 11. A data recording method for recording data on a write-once type recording medium, comprising navigation information necessary for reproduction by a DVD reproducing device (hereinafter, DV (DVD Video) navigation information) and a DVD recording / reproducing device. Navigation information required for playback (VR (Video Recording) navigation information)
And a write-once type recording medium. 12. The data recording method according to claim 11, wherein DV (DVD Video) navigation information is recorded in a program area of the write-once recording medium, and VR (Video Recording) navigation information is recorded on the write-once recording medium. A data recording method characterized in that recording is performed on an outer peripheral portion rather than a lead-out area.