JP2003346426A - Optical disk device, optical disk recording method, program for the optical disk recording method, and recording medium on which the optical disk recording method is recorded - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely play an optical disk and to write once data thereon, for example, when the information recording surface of the optical disk is managed by a management system until finalization regarding an optical disk device, an optical disk recording method, a program for the optical disk recording method, and a recording medium on which the optical disk recording method is recorded. <P>SOLUTION: A management system KA is recorded so as to trace the management system KA from management information TV recorded in a fixed area. When the management system KA become difficult to be reproduced, the management system KA is rerecorded in another area, and the recorded management information TV is correspondingly updated. <P>COPYRIGHT: (C)2004,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an optical disk device,
The recording method of an optical disc, a program of an optical disc recording method, and a recording medium on which the recording method of an optical disc is recorded can be applied to, for example, a DVD (Digital Versatile Disk) device. The present invention records the management system so that the management system can be traced from the management information recorded in the fixed area, and when the management system becomes difficult to reproduce, re-records the management system in another area, By updating the recording of the management information so as to correspond to this, when the information recording surface of the optical disk is managed by the management system until finalization, for example, the optical disk can be reliably reproduced and additionally recorded. To

[0002]

2. Description of the Related Art Conventionally, DVD which is a large capacity optical disc
, A writable optical disk is a DVD-R (DVD-Recordable) that can be written only once, a DVD-RW (DVD-Rewritanle) that can be written once, and a DVD-R.
An AM (DVD-Random Access Memory) is provided. Among these optical discs, DVD
-R and DVD-RW are designed so that they can be reproduced by a read-only DVD player or computer by recording video data in a format conforming to the DVD video format.

FIG. 8 is a table showing a logical format of an optical disk according to the DVD video format.
An optical disk according to this format has an information recording surface
It is divided into a lead-in (Data in), a data zone (Data zone), and a lead-out (Lead out) from the innermost side which is the head side (FIG. 8A), and desired video data and the like are recorded in the data zone. .

The data zone is divided into a UDF (Universal Disk Format) area (file system area) A1, a VMG (Video Manager) area (DVD management information area) A2, and a real-time data recording area A3 from the lead-in side. Is done. The UDF area and the VMG area are management information recording areas for managing files based on video data recorded on this optical disc. Of these UDF area and VMG area, the VMG area is D
This is an area corresponding to the VD player, and records TOC information that is management information for managing the entire video data recorded in the real-time data recording area A3. On the other hand, the UDF area A1 is an area corresponding to a file management system by a computer, and management information for managing the entire video data recorded in the real-time data recording area A3 in a format for compatibility with the file system in the computer. Be recorded.

The real-time data recording area A3 is a program area for recording actual data,
The video data is recorded in units of “deo Title Set” (hereinafter, appropriately referred to as “title”) (FIG. 8B).
Here, the VTS starts with VTSI (Video Title)
Set Information), VTSM VOBS (Video Obje
ct Set for the VTSM), VTSTT VOBS (Video
Object SetFor Titles in a VTS), VTSI BU
P (Backup of VTSI) (Fig. 8
(C)). VTSTT VOBS records video data in the format of Moving Picture Experts Group (MPEG) 2 which is actual data, and VTSI includes
In the VTSM VOBS, a title menu of video data is recorded in the VTSM VOBS, for example, recording position information as management information for managing video data based on the actual data. VT
SM VOBS is optional. VTSI BU
P is a VTSI backup.

Thus, in this type of optical disk, when accessing by a computer, a desired file can be searched and reproduced by UDF, and when accessing by a DVD player, desired file can be accessed by VMG. The file can be searched and played. This allows UD
F constitutes information for managing video data recorded on the optical disc in accordance with the file management system of the computer, while VMG constitutes information for managing video data recorded on the optical disc in correspondence with the DVD player. Is made up.

As a method of writing video data to such an optical disk, an Incremental Recording method (hereinafter, referred to as INC method) and a Restricted Over Write method (hereinafter, referred to as ROW method) are used. Here, the INC method is a method for sequentially recording video data, and the ROW method is a method applied to an overwritable optical disk. However, ROW
Also in the system, when data is recorded in an unrecorded area, video data is sequentially recorded. In the INC system and the ROW system, an RMA (Recording Management Area) provided on the inner peripheral side of the lead-in is used.
), An area by padding or the like to be described later is managed.

FIG. 9 is a chart showing a recording procedure by the ROW method. In the ROW system, lead-in, UD
F, VMG, VTSI of the first title, VTSM VO
The recording area of the BS is secured in advance by padding (FIG. 9A). Here, padding is processing for recording dummy data such as NULL to secure an area.

When these areas are secured in this way, in the ROW system, VTSTT VOBS based on actual data is formed by sequentially recording video data (FIG. 9B), and actual data is recorded for one title. Is completed, VTSI BUP is recorded, and VTSI and VTSM VOB of the subsequent titles are recorded.
Padding processing is executed to secure a recording area for S (FIG. 9B). Then, returning to the head side, the VTSI and VTSM VOBS corresponding to the recording of the actual data are returned.
Is formed (FIG. 9C). Thereby, in the ROW system, one VTS is recorded on the optical disc.

When recording the next title continuously,
In the ROW method, following the padding area formed by the immediately preceding VTS, the VTS is recorded by recording actual data.
TTVOBS and VTSI BUP are formed, and in order to secure areas for VTSI and VTSMVOBS of the following title,
The padding process is executed (FIG. 9D). Subsequently, VTSI and VTSM VOBS are formed (FIG. 9).
(E)), and the subsequent VTS is recorded on the optical disk (FIG. 9 (F)). In the ROW method, when titles are to be continuously recorded, processing such as padding is executed in the same manner, and VTSs are sequentially recorded.

On the other hand, with respect to an optical disk having a real-time data recording area formed by sequentially recording VTSs as described above, in the ROW system, a UDF area and a VMG area are formed by a finalizing process, and further, a lead-in and a Form the readout (Fig. 9
(G)), thereby achieving compatibility with a read-only optical disc.

[0012]

When titles are sequentially recorded and finalized as described above, it is necessary to hold recording position information of VTSI and VTSM VOBS in a memory, and to create UDF and VMG by recording in this memory. Conceivable. However, in the optical disk device, there is a case where the power is turned off and the information held in the memory is erased in such a case. In this case, it becomes difficult to play back each title, and additional writing is performed. It becomes difficult. Before finalizing, remove the optical disk and play it on another optical disk device.
It is also desirable to additionally record, and in this case, it is difficult to reproduce and additionally record.

As one method for solving this problem, for example, as shown in FIG. 10 in comparison with FIG.
It is conceivable to record an alternative management system of UDF and VMG, and to manage detection of information recording on the optical disk by this management system.

However, in such a management system, it is necessary to update the title every time a title is added or rewritten. On the other hand, in an optical disc,
Repeated rewriting lowers the reliability and eventually makes it impossible to reproduce the data. For optical discs,
In some cases, recorded data cannot be reproduced due to scratches, dirt, or the like.

As a result, when the management system is recorded in the specific area and the information recording surface is managed, the management system itself may not be able to be reproduced. In such a case, the information recorded on the optical disc may be lost. There is a problem in that the precious file itself cannot be reproduced, and even cannot be additionally recorded.

The present invention has been made in consideration of the above points. For example, when the information recording surface of an optical disk is managed by a management system until finalization, the optical disk can be reliably reproduced and additionally recorded. An optical disk apparatus, an optical disk processing method, an optical disk processing method program, and a recording medium on which an optical disk processing method is recorded are proposed.

[0017]

According to the first aspect of the present invention, there is provided an optical disk apparatus, which records a management system based on information necessary for reproducing a file recorded on the optical disk. At a recording position common to the optical discs, recording management information at least by an address indicating the recording position of the management system at a recording position set in advance, and in correspondence with recording of a file on the optical disc, When the record is updated and the management system cannot be reproduced correctly, the management system is re-recorded in another area and the management information is updated so as to correspond to the management system.

According to the ninth aspect of the present invention, a step of recording a management system based on information necessary for reproducing a file recorded on the optical disk by applying the method to a recording method of the optical disk, and a recording position common to the optical disk. Recording management information at least at an address indicating the recording position of the management system at a recording position set in advance, and updating the recording of the management system corresponding to recording of a file on the optical disc When,
If you can't play the management system properly,
Re-recording the management system, and updating the management information so as to correspond to the management system.

According to the tenth aspect of the present invention, a step of recording a management system based on information necessary for reproducing a file recorded on an optical disk by applying the program to a method for recording an optical disk, and a step common to the optical disk. Recording management information at least at an address indicating the recording position of the management system at a recording position that is set in advance, and updating the recording of the management system corresponding to recording of a file on the optical disc. And, if the management system cannot be reproduced correctly, re-recording the management system in another area and updating the management information to correspond to the management system.

According to the eleventh aspect of the present invention, the present invention is applied to a recording medium in which a program for a method for recording an optical disc is recorded, and the program for the method for recording an optical disc is used for reproducing a file recorded on the optical disc. Recording a management system by information; recording management information by an address indicating at least a recording position of the management system at a recording position common to the optical disc and a preset recording position; Updating the record of the management system in response to the recording of the file; and, if the management system cannot be correctly reproduced, re-recording the management system in another area, and storing the management information so as to correspond to the management system. And updating.

According to the first aspect of the present invention, the present invention is applied to an optical disk apparatus, and a management system is recorded on an optical disk by using information necessary for reproducing a file recorded on the optical disk.
At a recording position common to the optical discs, at least at a preset recording position, management information is recorded at least by an address indicating the recording position of the management system. If the management system cannot be reproduced correctly, the management system is re-recorded in another area, and the management information is updated so as to correspond to the management system. If the management system cannot be reproduced correctly by management, it can be set so that it can be re-recorded again and the management system can be traced by updating the management information. Thus, for example, when the information recording surface of the optical disc is managed by the management system until finalization, the optical disc can be reliably reproduced and additionally recorded.

According to the ninth, tenth and eleventh aspects of the present invention, when the information recording surface of the optical disk is managed by the management system, the information of the optical disk can be effectively protected by the management system. It is possible to provide a recording method, a recording medium recording an optical disk recording program, and a recording medium recording an optical disk recording method program.

[0023]

Embodiments of the present invention will be described below in detail with reference to the drawings.

(1) First Embodiment (1-1) Configuration of First Embodiment FIG. 2 is a block diagram showing an optical disk device according to a first embodiment of the present invention. This optical disc device 1
It is a video recorder which can record video data and audio data on an optical disk 2 which is a DVD.

That is, in the optical disk device 1,
The video input unit 3 performs an analog-to-digital conversion process on a video signal that is an imaging result obtained by an imaging unit (not shown) and a video signal that is input from an external device, and outputs video data. The audio input unit 5 performs an analog-to-digital conversion process on an externally input audio signal corresponding to an audio signal and a video signal acquired by a microphone, and outputs audio data.

The compression / expansion processing section 6 switches the operation under the control of the microcomputer 4, and processes data to be used for recording and reproduction. That is, the compression / decompression processing unit 6 includes video data input from the video input unit 3 and the audio input unit 5,
When recording audio data, the video data and audio data are compressed and multiplexed using a random access memory (RAM) 9 and output to the header information processing unit 7. Conversely, at the time of reproduction, the data obtained from the header information processing unit 7 is similarly separated into video data and audio data by using the random access memory 9 and then decompressed and output.

That is, in the compression / decompression processing unit 6, under the control of the microcomputer 4, the video processing unit 8 compresses the video data output from the video input unit 3 according to the MPEG2 format and outputs the video data during recording. During reproduction, the video processing unit 8 decompresses the video data output from the multiplex processing unit 10 in accordance with the data compression format of the video data and outputs the data.

The audio processing section 11 converts the audio data output from the audio input section 5 into an MPE during recording.
The data is compressed and output using a format such as G, Dolby Audio, or linear PCM. Conversely, at the time of reproduction, the audio data obtained from the multiplex processing unit 10 is decompressed and output.

The multiplexing processing unit 10 controls the video data output from the video processing unit 8 and the audio processing unit 1 during recording.
1 is time-division multiplexed and output to the header information processing unit 7. On the contrary,
At the time of reproduction, video data and audio data are separated from the time-division multiplexed data output from the header information processing unit 7, and the video processing unit 8 and the audio processing unit 11, respectively.
Output to

The video / audio encoder 13 compresses video data and audio data input from the audio input unit 5 or video data and audio data output from the compression / decompression processing unit 6 according to a predetermined format to an external device. Output to Thus, in the optical disc device 1, the imaging result and the reproduction result can be monitored by an external device.

The header information processing section 7 performs compression /
Upon receiving the time-division multiplexed data output from the decompression processing unit 6, the microcomputer 4 controls the microcomputer 4 to add header information and the like unique to the DVD and output the data. In addition, based on information from the microcomputer 4, data such as UDF, VMG, and VTSI is generated and output to the DVD signal processing unit 14. Also, at the time of reproduction or the like, the header information added at the time of recording is separated from the output data of the DVD signal
Output to The separated header information is notified to the microcomputer 4.

When recording, the DVD signal processing unit 14 uses the random access memory 15 to
, An error correction code is generated from this output data, and this error correction code is added to this output data. Further, it executes processing such as scrambling processing and 8/16 modulation, and outputs a data string based on the processing result to the analog front end unit 16 as a serial data string.

On the other hand, during reproduction, the DVD signal processing unit 1
4 is the analog front end unit 16
The output data is subjected to decoding processing, descrambling processing, and error correction processing, and outputs the processing result to the header information processing unit 7. Further, the DVD signal processing unit 14 performs digital-to-analog conversion processing on various types of drive information for spindle control, tracking control, focus control, and thread control output from the microcomputer 4 to generate these drive signals. The signal is output to the motor amplifier 18.

The analog front end section 16 generates and outputs a light quantity control signal for the laser beam emitted from the optical head 19 to the optical disc 2. During reproduction, the analog front end unit 16 maintains the light amount of the laser beam emitted from the optical head 19 to the optical disc 2 at a constant light amount for reproduction by the light amount control signal.
At the time of recording, the signal level of the light amount control signal is changed in accordance with the output data from the DVD signal processing unit 14, whereby the light amount of the laser beam is changed according to the output data from the DVD signal processing unit 14. From intermittently to the amount of recording light.

The analog front end unit 16 amplifies the result of receiving the return light obtained from the optical head 19 and performs an arithmetic process to thereby reproduce a signal whose signal level changes in accordance with the pit row formed on the optical disk 2. A signal is generated, and reproduced data, which is a result of binary identification of the reproduced signal, is output to the DVD signal processing unit 14 by signal processing of the reproduced signal. Further, by this arithmetic processing, a tracking error signal, a focus error signal whose signal level changes according to the focus error amount, and the like are generated, and these signals are converted into digital signals by the microcomputer 4.
Output to

The motor amplifiers 18 drive the corresponding mechanisms according to various drive signals output from the DVD signal processor 14. That is, the motor amplifier 18
Drives the spindle motor 20 and the sled motor 21 according to the drive signal for spindle control and the drive signal for sled control among these drive signals. Further, an actuator mounted on the optical head 19 is driven by a drive signal for tracking control and a drive signal for focus control.

The spindle motor 20 chucks the optical disk 2 and drives it to rotate at a predetermined rotation speed.
The thread motor 21 connects the optical head 19 to the optical disc 2
Move in the radial direction of

The optical head 19 emits a laser beam from a built-in semiconductor laser in response to a light quantity control signal output from the analog front end unit 16 and condenses this laser beam on the information recording surface of the optical disc 2 via an objective lens. I do. The return light obtained from the optical disk 2 by the irradiation of the laser beam is guided to a predetermined light receiving element via the objective lens, and the light receiving result of the light receiving element is output to the analog front end unit 16. Optical head 19
Means that this objective lens is a drive signal for tracking control,
The actuator is driven by an actuator driven by a drive signal for focus control, thereby enabling tracking control and focus control. Further, the light amount of the laser beam is intermittently started by the light amount control signal, whereby the information recording surface of the optical disk 2 is locally heated to record desired data.

The microcomputer 4 is a computer that controls the entire operation of the optical disk device 1. The microcomputer 4 executes a processing program installed in advance in the optical disk device 1 to operate the user through an operation unit (not shown). Thus, the operation of each unit is controlled by various signals detected by the analog front end unit 16 and the like. That is, the microcomputer 4 generates drive information for tracking control and focus control based on the tracking error signal and the focus error signal detected by the analog front end section 16, converts the drive information into analog signals by the DVD signal processing section 14, and The signal is output to the amplifier section 18, and the tracking control and the focus control are executed. Further, the laser beam irradiation position is detected based on the header information and the like detected by the header information processing unit 7, drive information for thread control is generated from the detection result, and output to the DVD signal processing unit 14. Execute the process. Similarly, the spindle control process is executed.

Further, the microcomputer 4 controls the optical disk 2
On the assumption that the optical disk 2 has not been finalized by executing a predetermined processing procedure.
For, titles are sequentially recorded by user operation.

That is, FIG. 3 shows an example of a so-called virgin disk in which no file is recorded.
5 is a table provided for describing a moving image file recording process according to the ROW method. The microcomputer 4 executes padding processing by updating the RMA information acquired from the optical disc 2 and held in the memory, and secures the UDF and VMG areas, and the VTSI and VTSM VOBS areas of the subsequent title (FIG. 3 (A)).

When the recording start is instructed by the user, the actual data of the moving image file is sequentially recorded and the VT is recorded.
After generating the STT VOBS, management information is generated based on the address information of the recording start position, the file size, the recording date and time, and the management information is recorded, and the VTSI BUP is recorded.
Generate For recording the subsequent titles, areas for VTSI and VTSM VOBS are secured by padding, and management information is sequentially recorded from a position returned by a predetermined area from the recording start position of VTSTT VOBS. Complete the recording of (Fig. 3
(B)).

In this embodiment, the microcomputer 4
When one title is recorded in this manner, information relating to the title is recorded in the management system KA, and the table TV indicating the recording position of the intermediate management information DK is updated as necessary (see FIG. )).

As shown in FIG. 1, the management system KA is management information for managing the information recording surface of the optical disk 2 until finalization, and is information necessary for reproducing a file recorded on the optical disk. Is recorded. As a result, in the optical disk device 1, this management system KA
To play back the optical disc 2 and further to UDF, V
The information of MG can be generated. Specifically, the management system KA is formed from information such as the address of the recording start position of all titles recorded on the optical disc 2, the file length, the file name, the recording date and time, and the like.

When one title is recorded on the optical disc 2 for the first time, the management system KA records the title following the end of valid data at that time, that is, the title. When a title is added after the head title in this manner and further updated, the title is updated in accordance with these processes. If it is determined by the write verify at the time of such updating that the reproduction is difficult, at that time, following the end of valid data recorded on the optical disc 2, that is, following the last recorded title, It is newly recorded. In FIG. 1, the management system KA is referred to as an intermediate moving image management system, and the codes from the first recorded management system to the newly recorded management system are sequentially denoted by KA1 and KA.
A2,..., Indicated by KAN.

The management system KA is created in units of an integral multiple of an ECC block, which is an error correction processing unit on the optical disk. In this embodiment, the ECC block has a size of 16 sectors. Thus, in the optical disk device 1, the management system KA can be easily rewritten.

On the other hand, the management table TV is management information indicating the recording start position of the management system KA.
The management table TV indicates a recording position of the management system KA by a pointer recorded in the table. Here, a plurality of management tables TV are prepared and are used sequentially from the top management table. The management table TV determines that the management system KA indicated by the management table on the head side cannot correctly reproduce data as described above,
When the management system KA is newly recorded, the management table TV indicating the previous management system KA
The flag indicating the use prohibition is set NG Flag, and the head address of the management system KA re-recorded in the subsequent management table TV is recorded.
In FIG. 1, the management tables that are sequentially enabled in this way are denoted by reference numerals TV1, TV2,..., TVN.

As described above, the management system KA is recorded at a recording position that changes variously depending on the title length and the like, whereas the management table TV is recorded at a fixed recording position common to all optical disks. To be done
Thus, in this embodiment, the management system KA can be reproduced based on the management table TV, and all the files recorded on the optical disc 2 are reproduced based on the reproduced management system KA. In addition, it can be added. Management system K
When it becomes difficult to reproduce A, the management system KA is re-recorded, and the management table TV is updated to correspond to this, so that the information of the management system can be effectively protected and the optical disk 2 can be securely accessed. It has been made like that. Here, the fixed recording position is a recording position common to the optical discs and means a recording position set in advance. In this embodiment, the recording position corresponds to the UDF and the VMG. It is configured to be set in an empty area between them.

In the microcomputer 4, as shown in FIG.
As shown in (B), when the first title is recorded, the management system KA is recorded following this title, and the first recording area of the subsequent title is secured by padding processing (FIG. 3 (C)). Further, the optical head 19 is caused to seek to the inner peripheral side of the optical disk 2 to record the management table TV.

Thus, when recording a moving image, the microcomputer 4 records a title in the same manner, executes padding processing, and updates the contents of the management system KA so as to correspond to the recording of the title. (FIG. 3
(D)). By repeating the same processing, titles are sequentially added, and each time additional titles are added, the management system KA is added.
Is updated (FIG. 3 (E1)).

When the titles are sequentially recorded in this way and the management system KA cannot be correctly reproduced by the write verification when updating the management system KA,
At that point, following the last recorded title,
The management system KA1 is newly recorded, and the padding process is subsequently executed (FIG. 3 (E2)). The management table TV is updated as described above in accordance with the record of the management system KA1. In the microcomputer 4, when the management system KA1 is recorded again in this manner,
Each time recording is performed, the newly recorded management system KA1 is updated so as to correspond to the recording of the title, instead of the management system KA. Further, when finalization is instructed by the user, UDF, VMG, lead-in, and lead-out are created by the latest management system KA1 recorded in this manner (FIG. 3).
(F)).

FIG. 4 is a flowchart showing a processing procedure of the microcomputer for these processing when the optical disk 2 is a DVD-RW. When the power is turned on, the microcomputer 4 proceeds from step SP1 to step SP2, and determines the presence or absence of the optical disk 2 based on the detection result of the optical disk 2 detection mechanism (not shown). Here, if a negative result is obtained, the microcomputer 4 repeats step SP2. If the microcomputer 4 repeats step SP2 without detecting the optical disk 2, the predetermined display means displays “No”.
A message such as "DISK" is displayed.

If a positive result is obtained in step SP2,
The microcomputer 4 proceeds to step SP3 and determines whether or not the ejection of the optical disc 2 has been instructed. If a positive result is obtained here, the microcomputer 4 instructs the ejection mechanism to eject the optical disc 2,
It returns to step SP2. On the other hand, if a negative result is obtained in step SP3, the microcomputer 4 proceeds to step SP4
Then, the type of the optical disk is determined.

Subsequently, the microcomputer 4 proceeds to step SP5. If the management table has already been recorded on the optical disk 2, the microcomputer 4 reads the data of this management table. After reading the management system, step SP7
Move on to In the case of a so-called virgin disk, the microcomputer 4 skips the processing of step SP6 and proceeds to step SP7 because no management table can be reproduced in the processing of step SP5.

Here, the microcomputer 4 waits for an operation by the user, and when an operation by the user is obtained, whether the operation is an operation for instructing recording (indicated by REC) or an operation for instructing reproduction (indicated by PB). , It is determined whether the operation to instruct the shutdown of the power supply is indicated (indicated by PowerOFF). If the operation by the user is an operation for instructing reproduction, the microcomputer 4 proceeds from step SP7 to step S7.
The process moves to P8, where a reproduction process procedure for reproducing the file recorded on the optical disc 2 is executed, and the process returns to step SP3.

On the other hand, if the operation by the user is an operation for instructing recording, the microcomputer 4 proceeds from step SP6 to step SP9, executes a predetermined recording processing procedure, and returns to step SP3. On the other hand, if the operation by the user is to turn off the power, the microcomputer 4 proceeds from step SP7 to step SP10, executes the process of turning off the power, moves to step SP11, and ends this processing procedure.

FIG. 5 is a flowchart showing the recording processing procedure described above with reference to FIG. When starting the recording processing procedure, the microcomputer 4 proceeds from step SP21 to step SP22, and determines whether the recording instruction by the user is for moving image recording or finalization processing.

If the recording instruction by the user is for recording a moving image, the microcomputer 4 proceeds to step SP1.
The process proceeds from step 2 to step SP13, and it is determined whether or not the user has instructed to start recording. Here, if a negative result is obtained, the microcomputer 4 repeats step SP23. If a positive result is obtained, the microcomputer 4 proceeds from step SP23 to step SP24, and records the actual data as described with reference to FIG. The process further proceeds to step SP25, and determines whether or not the user has instructed to stop recording. If a negative result is obtained here, the process returns to step SP24. As a result, the microcomputer 4 executes step SP24-S
The processing procedure of P25-SP24 is repeated, and the actual data is sequentially recorded. If a positive result is obtained in step SP25, the recording of the actual data is terminated, and the recording of the VTSTT VOBS is completed. Further, the microcomputer 4 subsequently proceeds to the VTSI
After the BUP is recorded and the padding process is executed, the process returns to the head side to sequentially form VTSI and VTSM VOBS, thereby recording one VTS.

After recording one title in this way, the microcomputer 4 proceeds to step SP26, and records the management system KA so as to correspond to the recording of this one title. That is, when one title is recorded on the virgin disk for the first time, the management system is recorded from the end of the title, which is the end of the valid data recorded on the optical disk 2, and then the leading area of the title that follows is secured by padding. On the other hand, if the management system KA has already been recorded on the optical disc 2, step S
In the data of the management system KA reproduced in P6, the recording position information for one newly recorded title, the file length,
The data of the management system KA is updated by adding data such as a file name, and the management system KA is rewritten with the updated data.

Subsequently, the microcomputer 4 proceeds to step SP27, in which the management system KA is reproduced, and thereby, it is determined whether or not the reproduction can be correctly performed by the write verify. If a negative result is obtained here, the microcomputer 4 proceeds to step SP28, updates the management table TV as described above with reference to FIG. 3, and proceeds to step SP26, at which point the validity recorded on the optical disc 2 is obtained. The management system KA is recorded following the end of the data. If the management system determined to be difficult to correctly reproduce by the write verification is recorded at the time following the end of the valid data recorded on the optical disc 2 at this time, the microcomputer 4 performs the recording. The management system is newly recorded in an area following the set area.

On the other hand, if a positive result is obtained in step SP27, the microcomputer 4 proceeds from step SP27 to step SP29, and returns to the original processing procedure.

On the other hand, if the recording instruction by the user is a recording related to the finalization process, the microcomputer 4 proceeds from step SP22 to step SP30, and determines whether or not the user has instructed to start recording. Here, if a negative result is obtained, the microcomputer 4 repeats step SP30. If a positive result is obtained, the microcomputer 4 proceeds from step SP30 to step SP31.
UDF and VMG data are created from the data of the management system and recorded on the optical disk 2 to form lead-in and lead-out. Thus, the microcomputer 4 forms a computer file management system and a DVD player file management system in the management information recording area on the inner circumference side of the optical disc 2 so that the DVD player can be played back by a read-only DVD player and a computer. It moves to step SP29 and returns to the original processing. The microcomputer 4 includes the optical disk 2
Is stored in a memory, and in a finalizing process or the like, a UDF or the like is appropriately created based on the data stored in the memory.

FIG. 6 is a flowchart showing the reproduction processing procedure described above with reference to FIG. When the microcomputer 4 starts this reproduction processing procedure, the microcomputer 4 proceeds to step SP4.
The process proceeds from 1 to step SP42, and it is determined whether or not the user has instructed to start reproduction. If a negative result is obtained here, step SP42 is repeated, whereas if a positive result is obtained, steps SP42 to SPSP are repeated.
Move to 43. Here, the microcomputer 4 controls the entire operation so as to reproduce the moving image file designated by the user based on the data of the management system KA recorded and held in the memory. It is determined whether or not stop of reproduction has been instructed.

If a negative result is obtained here, the microcomputer 4
Returns to step SP43, whereby step SP43
The processing procedure of 43-SP44-SP43 is repeated, and the moving image file designated by the user is sequentially reproduced. On the other hand, if an affirmative result is obtained in step SP44, the reproducing operation is terminated, and the routine goes to step SP45 to return to the original processing procedure.

(1-2) Operation of the First Embodiment In the configuration described above, in the optical disk apparatus 1 (FIG. 2), when the optical disk is loaded by the user with the power on, the optical disk When the power is turned on in a state in which the
The drive of the sled motor 21 via the signal processing unit 14 and the motor amplifier unit 18 causes the optical head 19 to move toward the inner circumference of the optical disc 2. Further, the optical head 19 irradiates the optical disk 2 with a laser beam, and the result of receiving the return light by the optical head 19 is sequentially processed by the analog front end unit 16 and the microcomputer 4, and the DVD signal processing unit 14 and the motor Amplifier section 18
The control of the optical head 19 through the control unit executes tracking control and focus control processing. Further, the data recorded on the optical disk 2 is reproduced by the processing of the light reception result by the DVD signal processing unit 14. Optical disk drive 1
Then, through this series of processing, various information recorded on the inner peripheral side of the optical disk 2 is acquired by the microcomputer 4, and is held in a memory built in the microcomputer 4.

When the optical disk 2 is a read-only optical disk created by a stamper, or when the optical disk 2 is an optical disk that has been subjected to finalization processing,
By this series of processing, the microcomputer 4 stores the optical disk 2
VMG data, which is management information for a DVD player, recorded on the inner peripheral side of the DVD is acquired. Thus, in the optical disk device 1, when the user instructs the reproduction of the optical disk 2, the thread signal 21 is driven via the DVD signal processing unit 14 and the motor amplifier unit 18 in accordance with the VMG data, thereby the title desired by the user. When the optical head 19 seeks to the recording position of, and the tracking control and the focus control are performed based on the light receiving result of the optical head 19, the light receiving result of the optical head 19 becomes D.
The VD signal processing unit 14, the header information processing unit 7, and the compression / decompression processing unit 6 sequentially process and reproduce video data of a moving image. That is, a reproduction signal whose signal level changes in accordance with the pit sequence of the optical disk 2 as a light reception result is processed by the analog front end unit 16 to generate reproduction data, and the reproduction data is decoded by the DVD signal processing unit 14.
Deinterleaving and error correction processing are performed. The reproduced data subjected to the error correction processing is input to the header information processing unit 7, where the header is removed, and the information of the header is notified to the microcomputer 4. Subsequently, the data is input to the compression / decompression processing unit 6, separated into video data and audio data by the multiplex processing unit 10, and the video data is decompressed by MPEG by the video processing unit 8, and the video / encoder 13. It is output to an external device. On the other hand, the audio data is decompressed by the audio processing unit 11, and then the video / encoder 1
3 to an external device.

On the other hand, when the optical disk 2 is a rewritable virgin disk, the microcomputer 4 obtains the RMA data of the optical disk 2 by accessing the optical disk 2 when the optical disk 2 is loaded or when the power is turned on. In the optical disk device 1, when the user selects the recording of a moving image, the microcomputer 4 (FIG. 2) updates the RMA stored in the memory and further pads the padding area to form the UDF and VMG, and the VST of the VST.
An area for recording TSI or the like is secured.

In this state, when the user instructs to start recording, video data and audio data are sequentially input from the video input unit 3 and the audio input unit 5, and the video data is compressed by the video processing unit 8 based on MPEG. Is performed, and data processing is performed on the audio data by the audio processing unit 11. Further, the multiplexed processing section 10 multiplexes the compressed video data and audio data, and a header is added by the header information processing section 7 to the processing result data. In the subsequent DVD signal processing unit 14, after an error correction code is added, an interleave process and an encoding process are performed, and the light amount of a laser beam irradiated from the optical head 19 to the optical disc 2 is converted into an analog front end unit in accordance with data of the processing result. The start-up is carried out by 16, whereby pit strings are sequentially formed on the optical disk 2, and video data of a moving image is sequentially recorded.

In the optical disk device 1, when the user instructs to stop recording, a series of processes in the compression / decompression processing unit 6 and the like are controlled to be stopped by the microcomputer 4, and the recording of video data is stopped, and the VTSI BUP is recorded. Then, after the area at the head of the subsequent title is secured by padding, the process returns to the head and returns to VTSI, VTSM VOBS.
Is recorded, whereby one title is recorded.

In the optical disk device 1, for the title recorded in this way, management information of this title is generated from information such as recording position information of this file, file size information, file name, recording date and time. .
In this case, in the optical disk device 1, since the management system KA is not yet recorded on the optical disk 2, data of the management system KA is generated by the microcomputer 4 from the management information generated in this manner. The management system KA is output to the processing unit 14 and generated following the end of the valid data at this time,
Next, padding is performed, and the VTSI, V
An area for generating the TSM VOBS is secured.

When the management system KA is recorded in this manner, the head address of the management system KA is set in the management table TV using a fixed address.
Accordingly, in the optical disk device 1, even when the optical disk 2 is ejected halfway and reproduced or added by another optical disk device, or when the optical disk 2 is accessed after the power is turned off and the recording in the memory is erased, However, the management table TV which is a fixed recording position can be reproduced, and the management system KA can be reproduced from the recording of the management table TV, and the recording position of the file recorded on the optical disc 2 from the recording of the management system KA1. And the like can be detected, so that even in such a case, the optical disk 2 can be reliably reproduced and additionally recorded.

That is, when such an optical disk 2 is loaded, the optical disk apparatus 1 reproduces the management table TV in the same manner as when the finalized optical disk 2 is loaded, and records the management table TV to the management system. The KA is reproduced and recorded in a built-in memory, desired data is recorded on the optical disk 2 in accordance with the recording of the memory, and a file recorded on the optical disk 2 is reproduced. Even when a file is recorded on a virgin disk for the first time, the data of the management table TV and the data of the management system KA recorded on the optical disk 2 are held in the memory.
The optical disk 2 is accessed according to the recording in the memory.

When the user instructs to record a file in accessing the optical disk 2, the optical disk device 1 similarly records a title, and
New management information is created by the microcomputer 4 based on the recording position information of the recorded title, file length, file name, and the like, and the management data is added to the management system held in the memory. Further, the management system KA recorded on the optical disc 2 is updated with the data of the management system to which the data has been added.

Thus, in the optical disk device 1, when the optical disk 2 is reproduced by another optical disk device, or when the optical disk 2 is accessed after the power is turned off, the file recorded on the optical disk 2 is reproduced. And it can be added again.

In the optical disk apparatus 1, when the management system KA is recorded and further updated as described above, whether or not the management system KA can be correctly reproduced is detected by write verification. Management system KA
Is generated again, followed by padding, and the following VT
An area for generating S VTSI and VTSM VOBS is secured. In addition, such a new management system KA
In order to access only the old management system KA and not access the old management system KA, a flag NG Flag indicating invalidity is set in the old management table TV, and the address of the new management system KA is recorded in the subsequent management table TV.

Thus, the optical disc apparatus 1 updates the management system KA each time a title is recorded and updated, and
When it becomes difficult to correctly reproduce the management system KA, or even when it becomes difficult to correctly reproduce the management system KA due to scratches, dirt, and the like, the optical disc 2 can be recorded on the optical disk 2 by the new management system KA. The recorded file can be reproduced, and a desired file can be additionally recorded on the optical disc 2. Thus, in the optical disc apparatus 1, when the information recording surface of the optical disc is managed by the management system until finalization, the optical disc can be reliably reproduced and additionally recorded.

In this regard, in the optical disk device 1,
When a file is recorded on the optical disc in this way and a finalization is instructed by the user, a file management system based on UDF and VMG is generated from the data of the management system KA recorded on the optical disc in this manner. Are sequentially recorded on the inner peripheral side of the optical disk 2, thereby achieving compatibility with the optical disk 2 created by the stamper.

(1-3) Effects of the First Embodiment According to the configuration described above, the management system is recorded so that the management system can be traced from the management table which is the management information recorded in the fixed area. When the management system becomes difficult to reproduce, the management system re-records the information in another area, and updates the recording of the management information to correspond to this. When managing the recording surface,
The optical disc can be reliably reproduced and additionally recorded.

At this time, the management information is formed by a plurality of tables. This table is formed by an address indicating the recording position of the management system and a flag indicating whether the table is valid or invalid. Set a flag indicating invalid to the table
By setting an address indicating the recording position of the re-recorded management system in the subsequent table, the management of the simple management table allows the optical disk to be reliably reproduced and additionally recorded. Also, by updating the table in this manner, the optical disk 2 can be reproduced by, for example, an application program corresponding to the computer, and the old management system can be reproduced sequentially, whereby the individual files recorded on the optical disk 2 can be restored. And so on. That is, depending on the latest management system, even if a file has management information recorded as deleted, depending on the optical disk 2, it is still recorded on the optical disk, and in fact, the file may be overwritten by the subsequent file recording. Some are erased. In such a case, according to the old management system, it is possible to acquire the recording position information and the like, and in this way, it is assumed that the file is deleted by the new management system and the file still recorded on the optical disc 2 is reproduced. can do.

Since the recording position of such a management system is an area following the end of valid data recorded on the optical disk at the time of recording by the management system, the management system is recorded by simple address management. can do.

Also, the rewriting process of the management system can be simplified by generating the management system in units of an integer multiple of the error correction processing unit of the data recorded on the optical disk.

The management system is formed of at least the recording position information of the file recorded on the optical disk, the information of the file size, and the information of the file name. Required information can be recorded.

Further, by reproducing the management system based on the reproduction result of the management information and reproducing the file recorded on the optical disk based on the reproduction result of the management system, the file is recorded on another optical disk. Even when an optical disk that has not been finalized or such an optical disk is accessed after the power is turned off, the file recorded on the optical disk can be reliably reproduced.

Further, based on this management system, a UDF, which is a file management system by a computer, and a VMG, which is a file management system of a DVD player, are formed on the inner circumference side of the optical disk, so that a DVD is formed.
It can be played by a player or computer.

(2) Second Embodiment In this embodiment, the optical disk device has an interface with a personal computer, and under the control of this personal computer, a file other than a moving image such as a moving image file, a still image, etc. (Hereinafter referred to as an extension file) is recorded on the optical disc.

In this process, for the moving image file, the file recorded on the optical disk 2 is managed by the management table TV and the management system KA as described above in the first embodiment. On the other hand, for the extension file, as shown in FIG. 7, the recording position is specified by the address recorded in the management table TV, the extension file guidance information TE is recorded, and the extension file guidance information TE is recorded. The position is specified, and the intermediate management information DK indicating the recording position of each extension file is recorded.

Here, the intermediate management information DK is management information necessary for reproducing the extension file, and is composed of management information CI and individual information EXF1 to EXF3. Here, the individual information EXF is management information for each extension file created for each extension file, and is formed by the file name of the corresponding file, the address of the recording start position, and the like.
On the other hand, the management information CI includes the following individual information EXF1 to EXF1.
The identification information indicating the category of the file managed by the EXF 3, directory information, and the like are recorded, so that compatibility with a file management system in a computer can be maintained.

The intermediate management information DK is created by collectively managing the management information of the extended files EF1 to EF3 recorded on the optical disk 2 continuously. After being created on the optical disk 2 once, the extended file EF4 is newly written on the optical disk 2.
~ EF6, the newly recorded extension files EF4 ~ EF are added to the intermediate management information DK recorded so far.
The management information of the EF 6 is put together and the intermediate management information DK1 is newly recorded.

The extension file guide information TE is the extension file guide information having the recording position information of the latest intermediate management information DK1, and indicates the identification code and the recording start position of the management information CI in the intermediate management information DK1. An address or the like based on the indicated pointer is recorded.

Thus, in this embodiment, each time the intermediate management information DK is recorded, the extension file guide information TE is updated, and the latest extension file guide information TE is used. The intermediate management information DK1 can be reproduced.

In this embodiment, the management table T
V is composed of a plurality of tables as in the first embodiment.
E, the address indicating the head recording position, and the management system KA
Of the first recording position and a flag indicating valid / invalid.

In the optical disk device according to this embodiment, as described above in the first embodiment, when the management system KA cannot be correctly reproduced by the write verification, the management system KA is newly recorded on the optical disk. The management table TV is updated to correspond to this record. In addition, if the intermediate management information DK, DK1 cannot be correctly reproduced by the write verification, the intermediate management information DK, DK1 is re-recorded, and the extension file guide information TE is updated to correspond to this. I do. If the guide information TE of the extension file cannot be correctly reproduced by the write verification, the guide information TE of the extension file is newly recorded on the optical disk, and the management table TV is updated to correspond to the new information.

Further, by the finalizing process, based on the intermediate management information DK and the management system KA, the U
The DF records management information of all files recorded on the optical disc including the extension file. On the other hand, V
In the MG, the management information is recorded only for the moving image file based on the management system.

Thus, in this embodiment, the extension file guide information TE which is the management system specified by the management table which is the management information specifies the intermediate management information DK and DK1 which are the other management information. Even in the case of information, the optical disk can be reliably reproduced and additionally recorded.

(4) Other Embodiments In the above-described second embodiment, a case has been described in which extended files recorded on an optical disk are collectively managed using the latest intermediate management information. However, the present invention is not limited to this, and can be widely applied to a case where the extended files are grouped, intermediate management information is assigned to each group, and the plurality of intermediate management information is managed by the extended file guide information TE.

In the above-described second embodiment,
Although the case where the extension file and the moving image file are managed by the individual management tables has been described, the present invention is not limited to this, and can be widely applied to the case where the management files are managed individually.

In the above embodiment, the UDF
Although the case where the management table is recorded between the VMG and the VMG has been described, the present invention is not limited to this. For example, the management table can be recorded in various areas as long as it is a fixed area such as an area following the VMG.

Further, in the above-described embodiment, the case where the management system is recorded following the end of the valid data has been described. However, the present invention is not limited to this.
Various areas can be widely applied as long as they are areas that are not recorded until finalization, such as areas where a VMG or the like is formed.

In the above-described embodiment, the case where the management information is updated by switching the table by setting the flag has been described. However, the present invention is not limited to this, and the management information is updated by actually rewriting the management information itself. In some cases,
Various updating methods can be widely applied.

In the above embodiment, the case where the management system is used as temporary information until finalization is described. However, the present invention is not limited to this, and may be used after finalization. .

In the above-described embodiment, a case has been described in which a series of processing is executed by a processing program installed in the optical disk apparatus in advance. However, the present invention is not limited to this, and the present invention is not limited to this. The present invention can be widely applied to a case where this type of processing procedure is executed by installing a downloaded program, and a case where this type of processing procedure is executed by installing a program provided by various recording media. In addition, as such a recording medium, a recording medium such as a magnetic disk, an optical disk, and a magnetic tape can be applied.

In the above-described embodiment, the case where the present invention is applied to the optical disk device and the optical disk device which is an external storage device of the computer has been described. However, the present invention is not limited to this, and the present invention is not limited to this. The present invention can be widely applied to the case of performing various kinds of processing.

[0103]

As described above, according to the present invention, the management system is recorded so that the management system can be traced from the management information recorded in the fixed area. By re-recording the system in another area and updating the record of management information to correspond to this, if the information recording surface of the optical disc is managed by the management system until finalization, for example, Can be replayed and added.

[Brief description of the drawings]

FIG. 1 is a chart provided for describing a management system in an optical disc device according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating an optical disc device according to the first embodiment of the present invention.

FIG. 3 is a table provided for explaining recording of a file in the optical disc device of FIG. 2;

FIG. 4 is a flowchart for explaining a processing procedure in the optical disk device of FIG. 2;

FIG. 5 is a flowchart illustrating a recording processing procedure of FIG. 4;

FIG. 6 is a flowchart showing a reproduction processing procedure in the processing procedure of FIG. 4;

FIG. 7 is a chart provided for describing processing of management information in an optical disc device according to a second embodiment of the present invention.

FIG. 8 is a table provided for explanation of a DVD video format.

FIG. 9 is a chart for explaining recording by a ROW method;

FIG. 10 is a chart showing an example of a case where a file recorded on an optical disk is managed by a management system.

[Explanation of symbols]

1 optical disk device, 2 optical disk, 4 microcomputer, 6 compression / decompression processing unit

   ────────────────────────────────────────────────── ─── Continuation of front page    F term (reference) 5C052 AA04 AB03 AB04 AB05 AB08                       CC11 DD04 DD06                 5C053 FA24 GA11 GB06 GB21 HA30                 5D044 BC04 DE03 DE38 DE48 DE57                       DE64                 5D110 AA17 BB06 CA04 CA07 CA12                       CA15 CC02 CE09 CJ01

Claims (11)

[Claims] 1. An optical disc apparatus for recording a desired file on an optical disc, wherein a management system based on information necessary for reproducing the file recorded on the optical disc is recorded on the optical disc, and a recording position common to the optical disc. Recording management information at least at an address indicating the recording position of the management system at a recording position set in advance, updating the recording of the management system in response to recording of a file on the optical disc; An optical disk device, wherein when the system cannot be reproduced correctly, the management system is re-recorded in another area and the management information is updated so as to correspond to the management system. 2. The management information is formed by a plurality of tables, the table is formed by an address indicating a recording position of the management system, and a flag indicating whether the table is valid or invalid. 2. When the management system cannot be reproduced correctly, a flag indicating invalidity is set in a corresponding table, and an address indicating a recording position of the re-recorded management system is set in a subsequent table. An optical disk device according to claim 1. 3. The optical disc apparatus according to claim 1, wherein the recording position of the management system is an area following the end of valid data recorded on the optical disc at the time of recording by the management system. . 4. The management system according to claim 1, wherein said management system is generated in units of an integral multiple of an error correction processing unit of data recorded on said optical disk.
An optical disk device according to claim 1. 5. The optical disk apparatus according to claim 1, wherein the management system is formed by at least recording position information of a file recorded on the optical disk, file size information, and file name information. . 6. The management system is formed by an address indicating a recording position of another management information, and the other management information is, for a plurality of files recorded on the optical disc, at least an address indicating a recording position of each file. 2. The optical disc device according to claim 1, wherein the optical disc device is formed by information of a file size and information of a file name. 7. The system according to claim 1, wherein the management system reproduces the file based on the reproduction result of the management information, and reproduces the file recorded on the optical disk based on the reproduction result of the management system. An optical disk device according to claim 1. 8. The optical disk apparatus according to claim 1, wherein a file management system using a computer and a file management system for a DVD player are formed on the inner peripheral side of the optical disk based on the management system. . 9. A recording method for an optical disk for recording a desired file on an optical disk, comprising: a step of recording a management system based on information necessary for reproducing a file recorded on the optical disk on the optical disk; Recording management information at least at an address indicating a recording position of the management system at a recording position set in advance; and recording the management system in correspondence with recording of a file on the optical disc. Updating the management system in another area when the management system cannot be reproduced correctly, and updating the management information to correspond to the management system. Recording method for an optical disk. 10. A program for an optical disk recording method for recording a desired file on an optical disk, comprising: a step of recording, on the optical disk, a management system based on information necessary for reproducing a file recorded on the optical disk; Recording management information at least at an address indicating the recording position of the management system at a pre-set recording position, the management system corresponding to recording of a file on the optical disc. And updating the management information to another area when the management system cannot be reproduced correctly, and updating the management information to correspond to the management system. An optical disc recording method program characterized by the following: 11. A recording medium on which an optical disk recording method program for recording a desired file on an optical disk is recorded, wherein the program for the optical disk recording method is used for reproducing a file recorded on the optical disk. Recording a management system based on information; recording management information by an address indicating at least a recording position of the management system at a recording position common to the optical disc and a recording position set in advance; Updating a record of the management system in response to recording of a file on an optical disc; and, if the management system cannot be reproduced correctly, re-recording the management system in another area and responding to the management system. Updating the management information so as to perform Recording medium for recording a program of optical disk recording method characterized by.