JP2003317440A - Optical disk drive, method for recording optical disk, program of method for recording optical disk, and recording medium recorded with method for recording optical disk - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make it possible to prolong the life of an optical disk in such a case, for example, a file exclusive of an animation picture in the application of a DVD device, is recorded and this file is subjected to updating, etc., relating to an optical disk drive, a method for recording the optical disk, a program of the method for recording the optical disk, and a recording medium recorded with the method for recording the optical disk. <P>SOLUTION: Positional information NWA indicating the top address of an unrecorded region is updated in correspondence to the deletion of the file recorded to the optical disk. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk device,
The optical disc recording method, the program of the optical disc recording method, and the recording medium on which the optical disc recording method is recorded can be applied to, for example, a DVD (Digital Video Disk) device. The present invention updates the position information indicating the start address of the unrecorded area in response to the deletion of the file recorded on the optical disc, for example, when a file other than a moving image is recorded and the file is updated. In addition, the life of the optical disk can be extended.

[0002]

2. Description of the Related Art Conventionally, a DVD, which is a large-capacity optical disk
In the above, writable optical discs are a DVD-R (DVD-Recordable), a recordable DVD-RW (DVD-Rewritanle), and a DVD-R that can be written only once.
AM (DVD-Random Access Memory) is provided. DVD among these optical disks
The -R and DVD-RW are designed so that they can be played back by a DVD player or computer for playback only by recording video data in a format conforming to the DVD video format.

FIG. 7 is a table showing a logical format of an optical disc according to the DVD video format.
The information recording surface of the optical disc of this format is
It is divided into a lead-in (Lead in), a data zone (Data Zone), and a lead-out (Lead out) from the innermost side which is the head side (FIG. 7A), and desired video data and the like are recorded in the data zone. .

Here, 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. To be done. The UDF area and the VMG area are management information recording areas for managing files of video data recorded on the optical disc. Of these UDF and VMG areas, the VMG area is D
The TOC information, which is an area corresponding to the VD player and is management information for managing the entire video data recorded in the real-time data recording area A3, is recorded. On the other hand, the UDF area A1 is an area corresponding to a file management system by a computer, and contains management information for managing the entire video data recorded in the real-time data recording area A3 in a format compatible with the file system in the computer. Will be recorded.

The real-time data recording area A3 is a program area for recording actual data, and is a VTS (Vi
Video data is recorded in units of deo Title Set) (hereinafter appropriately referred to as a title) (FIG. 7 (B)).
Here, up to 99 VTSs can be provided. Here, VTS is VTSI (Video Title Set Information), VT from the top side.
SM VOBS (Video Object Set for the VTSM), V
TSTT VOBS (Video Object SetFor Titles in a
VTS) and VTSI BUP (Backup of VTSI) (FIG. 7 (C)). For VTSTT VOBS,
Actual data MPEG (Moving Picture Experts Gro)
up) video data in 2 format is recorded,
In the VTSI, recording position information, which is management information for managing video data based on the actual data, is recorded in the VTSM V.
A title menu of video data is recorded in the OBS. The VTSM VOBS is an option.
VTSI BUP is a backup of VTSI.

As a result, in the case of an optical disc of this kind, a desired file can be searched and reproduced by the UDF when accessed by a computer, and a desired file by the VMG when accessed by a DVD player. The file can be searched and played. This makes UD
F constitutes the management information of the video data recorded on the optical disc corresponding to the file management system of the computer, whereas VMG corresponds to the management information of the video data recorded on the optical disc corresponding to the DVD player. It is designed to make up.

As a method of writing video data on 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 of recording video data sequentially, and the ROW method is a method applied to an overwritable optical disc. However, ROW
Also in the method, when data is recorded in the unrecorded area, video data is recorded sequentially. 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.
), The area by padding or the like described later is managed.

FIG. 8 is a chart showing a recording procedure according to the ROW system. Lead-in, UD in ROW system
F, VMG, VTSI of first title, VTSM VO
The recording area of the BS is secured in advance by padding (FIG. 8 (A)). Here, padding is a process of recording dummy data such as NULL to secure an area.

When these areas are secured in this way, in the ROW system, VTSTT VOBS of actual data is formed by sequentially recording video data (FIG. 8 (B)), and actual data for one title is recorded. When the recording of VTSI BUP is completed, VTSI BUP is recorded next, and VTSI and VTSM VOB of the subsequent titles are recorded.
The padding process is executed to secure the S recording area (FIG. 8B). Also, subsequently, returning to the head side, VTSI and VTSM VOBS corresponding to the recording of this actual data.
Are formed (FIG. 8C). Thus, in the ROW system, one VTS is recorded on the optical disc.

When the next title is recorded continuously,
In the ROW system, the padding area formed by the immediately preceding VTS is followed by the recording of actual data by the VTS.
TTVOBS and VTSI BUP are formed, and in order to secure the areas of VTSI and VTSMVOBS of the following titles,
The padding process is executed (FIG. 8 (D)). Further, subsequently, VTSI and VTSM VOBS are formed (see FIG. 8).
(E)), thereby recording the following VTS on the optical disc (FIG. 8 (F)). In the ROW system, when the title is continuously recorded, the padding or the like is similarly performed to sequentially record the VTS.

On the other hand, in the ROW method, the UDF area and the VMG area are formed by the finalizing process for the optical disk in which the VTS is sequentially recorded and the real-time data recording area is formed in this way.
Further, lead-in and lead-out are formed (Fig. 8
(G)), which allows compatibility with a read-only optical disc. In forming the UDF area and the VMG area, the VTSI and VTSM VOBS of each title.
This is executed by generating UDF and VMG data from the data of (1) and recording this data in the inner peripheral side head area secured by padding.

[0012]

By the way, in such an optical disc, it may be considered to be applied to a portable video recorder or the like instead of the magnetic tape. In this case, some conventional portable video recorders can record not only moving images but also still images. Therefore, even this type of optical disc can record still images other than moving images. Is desired.

As a method of fulfilling this demand, a moving image is recorded in the DVD video format and UD is used.
It is conceivable that the management information is recorded in F and VMG, and the management information is recorded only in the UDF for the files other than the moving image and is recorded on the optical disk together with the moving image file. That is, in this way, in a file management system using a computer or the like, all files recorded in the real-time data recording area, which is a program area, can be reproduced by using the UDF as a reference. For DVD players, VM
By accessing the real-time data recording area based on G, it is possible to record a file other than this type of moving image without affecting the reproduction by the DVD player.

When recording by the ROW system, etc.,
The management information necessary for creating such UDF and VMG is temporarily recorded on the optical disc in a format different from that of the moving image, so that the optical disc recorded by the ROW method or the like is also finalized. It can be played back on a DVD player.

Further, by temporarily recording the management information other than the moving image on the optical disc in the format different from that of the moving image, even if the finalizing process is not performed, the moving image is reproduced by the conventional DVD recorder. You can record files other than movies of this kind, with no effect on.

In this type of optical disc, when recording data in the real-time data recording area,
Since the management is performed using the RMA, it is conceivable that the temporary recording of the management information regarding the files other than the moving image is also managed using the RMA.
That is, in RMA, NWA (Next Writable Add
ress) is provided and this NWA indicates the start address of the unrecorded area, and if the management information is recorded with this NWA as a reference, the optical disc is transferred to another optical disc device during the process. Etc., but this NWA
The recording position of this kind of file can be confirmed by.

However, in the processing of files other than moving images, there is a possibility that the updating processing may be repeated many times as in the case of image processing in a computer. Therefore, when the updating processing is executed in the optical disc, It is also necessary to update the corresponding management information. On the other hand, in NWA, since it is originally assumed that the moving image file is additionally recorded on the optical disc, it is specified that the address can be updated only in the increasing direction.

As a result, when a file other than a moving image is recorded and the file is updated, the management information is eventually repeatedly recorded at the same location. There is a problem that the optical disk will reach the end of its life only by rewriting.

The present invention has been made in consideration of the above points. For example, when a file other than a moving image is recorded and the file is updated, the life of the optical disk can be extended. An object of the present invention is to propose a recording method, a program of the optical disk recording method, and a recording medium on which the optical disk recording method is recorded.

[0020]

In order to solve such a problem, in the invention of claim 1, the head area of the optical disk is based on the position information indicating the head address of the unrecorded area recorded on the inner circumference of the optical disk. The present invention is applied to an optical disk device that sequentially records files from the side and updates the position information in correspondence with the recording of the files, and updates the position information in correspondence with the deletion of files recorded in the optical disk.

Further, according to the invention of claim 6, the file is sequentially recorded from the head area side of the optical disk based on the position information indicating the head address of the unrecorded area recorded on the inner circumference of the optical disk, and the file is recorded. The present invention is applied to a recording method of an optical disc that updates position information in response to recording, and updates position information in response to deletion of a file recorded in the optical disc.

In the eleventh aspect of the invention, the file is sequentially recorded from the head area side of the optical disk based on the position information indicating the head address of the unrecorded area recorded on the inner circumference of the optical disk, and the file is recorded. The position information is updated according to the deletion of the file recorded on the optical disc by applying the program of the recording method of the optical disc that updates the position information according to the recording.

According to the sixteenth aspect of the invention, the file is sequentially recorded from the head area side of the optical disk based on the position information indicating the head address of the unrecorded area recorded on the inner circumference of the optical disk, and the file is recorded. The program of the recording method of the optical disc is applied to the recording medium in which the program of the recording method of the optical disc that updates the position information corresponding to the recording is recorded, and the program of the recording method of the optical disc stores the position information in response to the deletion of the file recorded on the optical disc. Update.

According to the structure of claim 1, the file is sequentially recorded from the head area side of the optical disk while the file is sequentially recorded from the head area side of the optical disk with reference to the position information indicating the head address of the unrecorded area recorded on the inner circumference of the optical disk. It is applied to an optical disc device that updates position information in response to recording, and by updating position information in response to deletion of a file recorded on an optical disc, the file recorded on the optical disc is repeatedly updated. When recording management information, etc. based on this position information, it is possible to prevent repeated recording of management information at the same location, which allows you to record a file other than a moving image, for example, and save this file. When updating or the like, the life of the optical disk can be extended.

Thus, according to the sixth, eleventh, and sixteenth aspects, for example, when a file other than a moving image is recorded and the file is updated, the life of the optical disk can be extended. It is possible to provide a recording method, a program of an optical disc recording method, and a recording medium on which the optical disc recording method is recorded.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings as appropriate.

(1) Configuration of Embodiment FIG. 2 is a block diagram showing a recording / reproducing apparatus according to an embodiment of the present invention. This recording / reproducing apparatus is a portable camera-integrated recording apparatus, and a recording / reproducing system using an optical disk device is provided in place of the recording / reproducing system using a magnetic tape in a conventional camera-integrated video tape recorder. There is.

That is, in this recording / reproducing apparatus 11,
The camera unit 12 captures an image of a desired subject through a lens and outputs video data based on the captured image. In this process, the camera unit 12 switches the operation under the control of the system block 16 to obtain video data of a moving image,
Selectively output still image video data.

The video encoder 13 is the camera unit 1
The video data obtained from No. 2 is compressed and output. In this process, the video encoder 13 switches its operation in cooperation with the camera unit 12 under the control of the system block 16, and when video data of a moving image is output from the camera unit 12, compresses the data in the MPEG2 format. Output. On the other hand, when video data of a still image is output from the camera unit 12, the data is compressed in the JPEG format and output.

The microphone unit 14 acquires a voice signal with a microphone, amplifies it, and outputs it as a digital signal. The audio encoder 15 data-compresses the audio signal based on this digital signal and outputs it.

The video decoder 21 receives the video data reproduced from the optical disk 18 via the system block 16 during reproduction, decompresses the video data according to the recording format, and displays the data on the display unit 19, Output to line output. During reproduction, the audio decoder 22 inputs the audio data reproduced from the optical disk 18 via the system block 16, decompresses the audio data, and outputs the data to the audio processing unit 20 and a line output.

When monitoring the image pickup result, the display unit 19 inputs the video data output from the camera unit 12 via the system block 16 and drives the liquid crystal display panel by this video data. Thereby, the monitor image of the image pickup result is displayed. On the other hand, at the time of reproduction, the liquid crystal display panel is driven by the video data output from the video decoder 21, thereby displaying the monitor image of the reproduction result. When monitoring the imaging result, the audio processing unit 20 inputs the audio data output from the microphone unit 14 via the system block 16 and drives a speaker or the like by this audio. As a result, an audio signal for monitoring is output. On the other hand, at the time of reproduction, a speaker or the like is driven by the audio data output from the audio decoder 22, thereby outputting the monitor audio signal of the reproduction result.

The drive block 17 is an optical disc 18
Together with the optical disk device, ATAPI (AT Att
achment Packet Interface) system block 1
6 is connected. The drive block 17 switches the operation according to the command output from the system block 16 by this ATAPI by executing the firmware installed in advance.
The output data of 1 is recorded on the optical disc 18. Also, the data recorded on the optical disc 18 is reproduced, and the reproduction data obtained as a result is output to the system block 16.

The system block 16 is a controller for controlling the operation of the recording / reproducing apparatus 11 as a whole. By executing a predetermined processing program installed in advance, various commands are given to the drive block 17 and the like in response to the user's operation. Is output, whereby the imaging result is recorded on the optical disc 18, and the imaging result recorded on the optical disc 18 and the imaging result obtained by the camera unit 12 can be monitored.

That is, the system block 16 time-division-multiplexes the video data and audio data output from the video encoder 13 and the audio encoder 15 and outputs them to the drive block 17 and records them on the optical disc 18 when recording the image pickup result. To do. Further, the video data and the audio data output from the camera unit 12 and the microphone unit 14 for monitor are directly output to the display unit 19, the audio processing unit 20, and the line output.

When the image pickup result recorded on the optical disc 18 is reproduced, the drive block 17
The obtained reproduction data is separated into audio data and video data and output to the video decoder 21 and the audio decoder 22.

In such a series of processing, when the user instructs to record a still image, the system block 16 instructs the drive block 17 to switch the operation mode to the extended file mode, and the camera section 12 and Instruct the video encoder 13 to process with still images,
Thus, instead of the moving image file, a still image file is recorded on the optical disc 18.

The extended file mode is an operation mode in which an extended file other than a moving image is recorded in the drive block 17, and in this embodiment, a still image file is applied as the extended file. . In the following, a mode for recording a normal moving image file will be referred to as a moving image file mode in comparison with the extended file mode.

FIG. 3 is a diagram for explaining the moving image file mode and the extended file mode, taking the case of a so-called virgin disc in which no files are recorded as an example. The drive block 17 is an optical disc 18
When the power is turned on with the optical disc loaded, or when the optical disc 18 is loaded with the power turned on, various management information recorded on the inner circumference side of the optical disc 18 is acquired. Hold it in the memory and output a part of this management information to the host device. As a result, in this type of optical disc device, the host device can instruct the reproduction of various files recorded on the optical disc 18.

When the optical disk 18 is a virgin disk, data such as UDF and VMG has not been recorded yet, so that the drive block 17 acquires the RMA information as the management information and holds it in the memory in this case. Further, the system block 16 which is the host device is notified that no file is recorded on the optical disc 18 as the management information.

When the user selects the recording of the imaging result, the system block 16 drives the drive block 17.
When the optical disc 18 is a virgin disc by this instruction, the drive block 17 instructs
The padding process is executed to secure the UDF and VMG areas. Also, in the moving image file mode, the padding process causes the VTSI and VTSM of the following titles.
A VOBS area is secured (FIG. 3 (A)). By these processes, the RMA data held in the memory is updated so that the position designated by the NWA becomes the position following the padding end point.

When the user operates the recording start trigger switch, the system block 16 instructs the drive block 17 to start recording and outputs multiplexed data of video data and audio data. , By the instruction of this record, this NW
The output data of the system block 16 is recorded based on the value of A. In the moving image file mode, the multiplexed data sequentially input by this is recorded on the optical disc 18 to record a moving image file. When the user instructs the stop of recording by operating the trigger switch, the system block 16 instructs the drive block 17 to end the recording and stops the transmission of the multiplexed data. The recording of the actual data on the optical disc 18 is ended by the instruction.

As a result, in the moving image file mode, VTSTT VOBS is recorded, and in the drive block 17, management information is generated based on the address information of the recording start position of this VTSTT VOBS, the file size, the recording date and time, and this management is performed. Information for VTSTT
Record in the area following the VOBS to form a VTSI BUP. For recording the subsequent title, the VTSI and VTSM VOBS areas are secured by padding (FIG. 3 (B)). In addition, NWA supports these processes.
Update the value of.

Further, the management information is sequentially recorded from the position where the recording start position of the VTSTT VOBS has returned from the recording start position by a predetermined area, whereby the VTSI and VTSM VOBS are formed, whereby the recording of one title is completed (see FIG. 3 (C)). In these processes, the drive block 17 records and holds the management information of this title in the memory.

When a moving picture is subsequently recorded, the system block 16 similarly controls the operation of each section, and the drive block 17 repeats the same processing by this command, thereby recording a moving picture file. The files are sequentially recorded by the same ROW method as the conventional one.

On the other hand, when the user instructs to record a still image, the system block 16 instructs the drive block 17 to switch the operation mode to the extended file mode, and the drive block 17 receives the instruction. , The actual data recording start position is set at the head position of the area secured by padding. When the user operates the trigger switch to instruct to start recording, the system block 16 instructs the drive block 17 to start recording and acquires video data of a still image from the camera unit 12. And outputs the multiplexed data by the drive block 17.

The drive block 17 sequentially records multiplexed data of still images from the head position of the area secured by padding, and records still image files.
When the recording is completed, the system block 16 is notified of the completion of the processing. Due to this notification, the system block 16
Then, when the user operates the trigger switch,
Similarly, the drive block 17 is instructed to start recording, and multiplexed data of still image video data is output to the drive block 17. Also drive block 17
Causes the still image file to be recorded in the following area.
As a result, the recording / reproducing apparatus 11 collectively records as many still image files as the user desires.

When the still image file is recorded in this way and the user gives an instruction to end the still image recording mode,
The system block 16 instructs the drive block 17 to switch the operation mode. Drive block 17
In the extended file mode,
Intermediate management information DK is generated and recorded on the optical disc 18 for continuous still image files recorded on the optical disc. In addition, the padding process is subsequently executed, and the VTS
I and VTSM VOBS areas are secured (Fig. 3
(D)). Further, the intermediate management information DK is recorded and held in the memory, and the NWA held in the memory is updated so as to correspond to the series of processes. As a result, in the recording / reproducing apparatus 11, the recording position of the intermediate management information DK can be specified by the NWA, and the intermediate management information DK is recorded immediately before the area designated by the NWA.

Here, this intermediate management information DK is temporary management information until the UDF is created for the plurality of extension files recorded immediately before, and the management information of these plurality of files is stored. It is a summary. The intermediate management information DK is composed of address information of recording start position of each file, file name, file size, time information, etc.
The recording start position and the file size of a desired file are detected from K, and this file can be reproduced from the detection result.

As a result, when the system block 16 and the drive block 17 record the still image file in this way and then record the moving image file again, the padding area is followed by the actual data, in the same manner as described above.
VTSI BUP is recorded, an area is secured by padding (FIG. 3 (E)), VTSI and VTSM VOBS are recorded (FIG. 3 (F)), and thereby VTS is recorded (FIG. 3 (G)).

FIG. 4 is a diagram for explaining the intermediate management information DK. The intermediate management information DK is collectively recorded for each attribute of the continuously recorded extension files. That is, as shown in FIG. 4B, the intermediate management information includes a header and file management information DJ, DM7 for each attribute.
And DM4. For example, three files FJ1, FJ2, F by JPEG can be specified by the user.
After recording J3, two MPEG7 files FM71 and FM72 are recorded, and then MPE is recorded.
When the two files FM41 and FM42 by G4 are recorded (FIG. 4A), the recording of the intermediate management information DK indicates the recording of these three types of files, and the recording of this header continues. The recording position of each file management information DJ, DM7, DM4 is shown.
Here, the symbols DJ, DM7, and DM4 are JPE, respectively.
The file management information according to G, MPEG7, and MPEG4 is shown.

The file management information DJ for each attribute is shown in FIG.
As shown in (C), the management information DFJ of each file
1, DFJ2, and DFJ3 are recorded, and as shown in FIG. 4D, the attribute information and address information ADD of the corresponding extension file are added to the management information DFJ1 of each file.
R, size information, time information, etc. are assigned.

In this embodiment, the recording / reproducing apparatus 11 applies the still image file in JPEG as the extension file, so that the optical disk 18 recorded by the recording / reproducing apparatus 11 has such an attribute. For the file management information for each, see FIG.
Only the file management information DJ shown in (B) is created.

As a result, in the recording / reproducing apparatus 11, even when a file other than a moving image is recorded on the optical disc 18, the file and the corresponding management information are recorded as a set in the program area. At this time, when the file to be recorded on the optical disc 18 is a moving image file, the management information, the file, and the backup information of the management information are sequentially recorded, while the still image file that is a file other than the moving image is recorded on the optical disc. In the case of recording in 18, the file and the management information are sequentially recorded, whereby the recording format of the management information is switched according to the attribute of the file.

In addition, a plurality of extension files
By managing them collectively by one intermediate management information DK, these can be managed by one directory,
It is designed to improve usability for users.

On the other hand, when the user gives an instruction to finalize, in the system block 16,
The drive block 17 is instructed to finalize, and in the drive block 17, UDF data is generated for all files recorded on the optical disc 18 from the management information held in the memory. Also, the optical disc 18
VMG data is generated from the management information held in the memory only for the moving image file recorded in (1). Furthermore, seeking to the area secured at the beginning, these UDF, VMG
The data is recorded to generate UDF and VMG. In addition, lead-in and lead-out are generated, thereby completing the finalizing process (FIG. 3 (H)).

On the other hand, if the user gives an instruction to eject the optical disk without finalizing,
The system block 16 instructs the drive block 17 to eject the optical disc 18, and the drive block 17
After the RMA of the optical disc 18 is updated by the NWA that is sequentially updated by the series of processes described above, the optical disc 18 is ejected.

In the series of processes, the drive block 17 initially updates the management information acquired from the optical disc 18 according to the recording of the file on the optical disc 18, and notifies the system block 16 of the updated information. . As a result, in the system block 16, it is possible to instruct the drive block 17 to reproduce a file or the like immediately after recording, and further to delete the file.

FIG. 5 is a chart for explaining the processing relating to such file deletion in comparison with FIG.
When a moving image file and an extension file that is a still image file are sequentially recorded on a virgin disc, in this case, the area following the intermediate management information DK of the last recorded still image file EF is the beginning of the unrecorded area. NWA
In FIG. 5, the values are sequentially updated by the drive block 17 and finally held at the value indicating the leading address (FIGS. 5A to 5F).

In this state, for example, when the last recorded still image file EF is deleted, the drive block 17 updates the management information held in the memory, and this still image file EF and the following intermediate management information DK are updated. The recorded area is set as an unrecorded area (see FIG. 5).
(G)) In the subsequent recording of the extension file, the extension file and the corresponding intermediate management information are recorded in this unrecorded area by overwriting (FIG. 5 (H)-
(J)). Note that instead of setting the unrecorded area by updating the management information, the information actually recorded on the optical disk may be erased to set the unrecorded area.

System block 1 according to this embodiment
6, when the last recorded file is deleted for each intermediate management information, a command for returning the recording position information specified by the NWA value to the head side is issued after the deletion command. Output to.
In addition, the drive block 17 uses this command to identify the head position that can be recorded by deletion.
The value of NWA is updated (FIG. 5 (G)). As a result, in the recording / reproducing apparatus 11, the position information indicating the head position of the unrecorded area is updated in response to the deletion of the file recorded on the optical disc 18.

As a result, when the extension file recording is instructed subsequently from the system block 16, the drive block 17 sequentially records the extension file according to this instruction,
The intermediate management information DK is recorded, and the NWA value is updated so as to correspond to these records. As a result, in the recording / reproducing apparatus 11, as compared with the case where the value of NWA is not returned to the head area side even if erasing and recording are repeated, the intermediate management information DK
The recording frequency of the optical disc 18 is remarkably reduced, and the life of the optical disc 18 can be extended correspondingly. Note that such NWA update is executed on the memory, and the optical disc 18
Drive block 17 is discharged or the power is shut off,
The NWA update in this memory is recorded on the optical disc 18.

On the other hand, when deleting a part of the plurality of extension files managed by one intermediate management information DK, the system block 16 deletes the extension file corresponding to the drive block 17. Give instructions. By this instruction, the drive block 17 updates the intermediate management information DK so as to correspond to the deletion of the corresponding file, and additionally writes it on the optical disc 18. Also, the NWA held in the memory is updated to correspond to this.

In this deletion process, when the system block 16 instructs the deletion of the file recorded immediately before the intermediate management information DK, the drive block 17 replaces the additional recording of the intermediate management information DK. Intermediate management information is recorded from the beginning of an unrecorded area that occurs when this file is deleted, and the extension file recorded on the optical disc 18 is actually deleted by this, and the recording position of the intermediate management information is set to the beginning side. Move it to make effective use of the information recording surface. Correspondingly, the value of NWA is returned to the head side.

To do so, FIG. 1 is a flow chart for explaining the erasing process of the recording / reproducing apparatus 11 relating to the NWA update. In the recording / reproducing apparatus 11, when the user instructs the erasure of the extended file, the process moves from step SP1 to step SP2, and the system block 16 instructs the drive block 17 to delete the corresponding file. File is deleted. Further, in the subsequent step SP3, it is determined whether or not a plurality of extension files that are collectively managed by the intermediate management information of the files related to deletion exist without being deleted.

If a negative result is obtained here, step S
Moving to P4, in this case, since there is no file to be managed in the intermediate management information of the file related to this deletion, a command to return NWA to the drive block 17 is sent from the system block 16 and responds to this. Then, in the drive block 17, the value of NWA is updated so that the NWA indicates the beginning of the deleted portion.

As a result, the recording / reproducing apparatus 11 updates the NWA in response to the deletion processing, and then moves to step SP5 to end this processing procedure.

On the other hand, when a positive result is obtained in step SP3, the process proceeds to step SP6, the intermediate management information is updated so as to correspond to the deletion process, and the intermediate management information is additionally written. At this time, if the file to be deleted is the last file, the intermediate management information is recorded after the extended file. Further, subsequently, the process proceeds to step SP7, the NWA is updated so as to correspond to these processes, and the process proceeds to step SP5 to end this process procedure.

(2) Operation of the Embodiment With the above-described structure, in the recording / reproducing apparatus 11 (FIG. 2), when the optical disk 18 is loaded by the user while the power is turned on, the optical disk 18 is loaded again. When the power is turned on in this state, the drive block 17 acquires and retains various management information recorded on the optical disc 18, and a part of the management information is notified to the system block 16.

If the optical disk 18 is a read-only optical disk created by a stamper, and further if the optical disk 18 is a finalized optical disk in which only moving image files are recorded, the drive block 17 is written by this series of processes. The VMG data, which is the management information for the DVD player recorded on the inner circumference side of the optical disc 18, is obtained, and the system block 16 is notified of the file recorded on the optical disc 18 from this management information. . As a result, in the recording / reproducing apparatus 11, when the user instructs the reproduction of the optical disc 18, the system block 16 instructs the reproduction of the file corresponding to the drive block 17, and the drive block 17 causes the optical disc 18 to be reproduced in accordance with the VMG data. The recorded data is reproduced, and this reproduced data is provided to the user via the system block 16, the video decoder 21, the audio decoder 22, the display unit 19, and the audio processing unit 20.

On the other hand, in the case where the optical disc 18 is a recordable virgin disc, the RMA data of the optical disc 18 is obtained by the drive block 17 by accessing the optical disc 18 when the optical disc 18 is loaded and when the power is turned on. Further, the system block 16 is notified that no file is recorded on the optical disc 18. In the recording / reproducing apparatus 11, when the user selects the moving image shooting mode, the system block 16 switches the operation mode of the drive block 17 to the moving image file mode. Drive block 17
In UDF, VMG,
Area forming the VTSI, VTSI of the first VTS, VTSM
An area for generating VOBS is secured.

When the user gives an instruction to start recording in this state, the video encoder 13 compresses the video data of the moving image obtained from the camera section 12 by MPEG2, and the audio data output from the microphone section 14 becomes the audio data. Data is compressed by the encoder 15. Further, the compressed video data and audio data are multiplexed by the system block 16. In the recording / reproducing apparatus 11, after the recording command is output from the system block 16 to the drive block 17, the multiplexed data thus generated is sequentially output to the drive block 17. In the drive block 17, the multiplexed data is sequentially recorded on the optical disc 18 following the area secured by the padding, and the recording is stopped by the user's recording stop instruction.

As a result, in the recording / reproducing apparatus 11, the VTSTT VOBS constituting one title is recorded on the optical disc 18, and the management information is generated in the drive block 17 according to the recording start position of the VTSTT VOBS, the file size, etc. This management information is subsequently recorded on the optical disc 18 to form a VTSI BUP area. Also, following VT by padding
An area for generating the VTSI and VTSM VOBS of S is secured, and the area for VTSI and VTSM VOBS is formed by returning to the previously secured area for generating VTSI and VTSM VOBS and recording the management information.

In the recording / reproducing apparatus 11, one title of moving image video data is recorded. As a result, in the recording / reproducing apparatus 11, when recording a file of a moving image, management information by VTSI, VTSM VOB
The management information and files are recorded in the DVD video format, which is a format in which the management information by S, files, and the management information by VTSI BUP are continuous. Further, this management information is held in the memory of the drive block 17.

In the recording / reproducing apparatus 11, when the user subsequently instructs the recording of the moving image, the titles are sequentially recorded on the optical disc 18 by repeating the same processing.
Further, in the case where the titles are sequentially recorded in this manner and an optical disc which has not been finalized is loaded, the optical disc 18 is initially recorded together with the RMA data based on the NWA which is the RMA data. By the scan, the management information thus recorded in combination with the title is sequentially acquired and held in the memory of the drive block 17, and the titles continuing from the end of the title detected by the scan of the optical disc are recorded.

In the recording / reproducing apparatus 11, the management information thus obtained by scanning the optical disk 18 and a part of the management information held in the memory at the time of recording the title on the optical disk 18 are finalized. As in the case of, the system block 16 is notified,
As a result, it becomes possible to detect the target file in the system block 16 and reproduce it in the drive block 17 even for a file immediately after recording or a file recorded by another optical disk device. In addition, the NWA detected at the time of scanning the optical disc 18 and the NWA held in the memory are updated in response to the recording of the moving image file on the optical disc 18 as described above.
7, it is possible to record a moving image file in the following unrecorded area.

Therefore, in the recording / reproducing apparatus 11, when the user instructs the ejection of the optical disc 18, and further the power-down instruction, the optical disc is held by the RMA data which is held in the memory and sequentially updated. 18 R
MA is updated.

In the recording / reproducing apparatus 11, the title is recorded in this way, and when the user instructs the finalizing process, the UDF and VMG of the management information forming a set with the title recorded in the memory are recorded. Data is generated, these are recorded in the inner peripheral side area secured in the optical disc 18, and lead-in and lead-out are formed. As a result, this optical disc is set to be reproducible by an optical disc device compatible only with the normal DVD format.

On the other hand, when the user selects the still image shooting mode, the system block 16 switches the operation mode of the drive block 17 to the extended file mode. As a result, in the virgin disc, the padding secures the UDF and VMG regions. In the camera unit 12 and the video encoder 13, the operation mode is switched so that video data of a still image is acquired and the data is compressed by JPEG.

When the user gives an instruction to start recording a still image in this state, the multiplexed data of the still image thus compressed by JPEG is sequentially output to the drive block 17 and recorded on the optical disc 18. .

In recording a moving image, the recording / reproducing apparatus 11 first secures an area of VTSI and VTSM VOBS and records actual data, whereas in recording a still image, such an area is secured. The actual data of the still image is recorded without doing. When the user gives an instruction to record the subsequent still image, the subsequent still image is similarly recorded on the optical disc 18. Also for each of these records,
The recording position of each file is recorded in the memory.

In the recording / reproducing apparatus 11, the file of still images is recorded on the optical disk by the desired number of files in this way, and the extension file mode is terminated by the switching of the operation mode by the user.
The drive block 17 is notified by this notification, and by this notification, management information based on the recording position and the like held in the memory is recorded in the subsequent area for a plurality of files as temporary intermediate management information until finalization. Thus, in the recording / reproducing apparatus 11, when recording a file other than a moving image, the file and the management information are recorded in the order of the file and the corresponding management information, and the file and the management information are recorded according to the attribute of the recorded file. The recording format of the management information is switched.

As a result, in the recording / reproducing apparatus 11, the DVD
A file such as a still image that is not defined in the video format can be recorded on the optical disc 18. When the optical disc 18 recorded in this way is loaded into a DVD recorder that supports only the normal DVD video format, the management information is detected according to the DVD video format such as VTSI by the search at the time of loading, and this management information is detected. By V
By reproducing the TS, the files such as still images recorded in this way and the corresponding management information are
It is possible to prevent the playback of the video from being affected. As a result, on the optical disc recorded in this way, it becomes possible to reproduce a moving image file by a normal DVD recorder.

On the other hand, according to the optical disk device that supports files other than moving images such as the recording / reproducing device 11, it is possible to reproduce even a still image file. That is, when such an optical disc 18 is loaded, the recording / reproducing apparatus 11 reproduces not only the VTS and VTSM VOBS data but also the management information of the still image file from the optical disc 18 by the initial search of the optical disc 18. , Drive block 17
The file information, which is held in the memory of, and is a part of the management information, is notified to the system block 16.

As a result, it is possible to provide the user with, for example, the titles of moving images and still images recorded on the optical disc 18 according to the user's instructions. When the user gives an instruction to reproduce a moving image by the reproduction instruction by the user, the corresponding moving image file is reproduced by the data of the VTS and VTSM VOBS in the same manner as described above for the reproduction-only optical disc.

On the other hand, when the user gives an instruction to reproduce the still image file, the recording position of the corresponding file is detected from the intermediate management information held in the memory,
The data recorded on the optical disc 18 is sequentially reproduced according to the detection result, and reproduced data of a still image is generated. In the recording / reproducing apparatus 11, in the case of processing the reproduction data of a still image in the processing of the reproduction data, J
The processing of the video decoder 21 is switched so as to decompress the video data compressed by PEG, whereby the video data of a still image is displayed on the display unit 19.
It is possible to confirm and further output to an external device.

In general, the file size of such a still image file is smaller than that of a moving image file, but the recording / reproducing apparatus 11 uses such management information for intermediate management. The information DK is created and recorded collectively for a plurality of files (FIG. 4). As a result, the recording / reproducing apparatus 11 can reduce the reduction of the recording area due to the recording of the management file when recording the extension file such as the still image file.

In addition, in the case of collectively recording a plurality of files in this way, the plurality of files are collectively recorded for each file type that is the attribute of the file, thereby simplifying the search processing, the processing in finalizing described later, and the like. Is made possible.

In the recording / reproducing apparatus 11, a so-called virgin disc, an optical disc which records only a moving image and is not finalized yet, and an optical disc which is not yet finalized by recording moving image and still image files is used to record a moving image and a still image. Image files are sequentially recorded by user operation.

On the other hand, regarding the optical disc on which the moving image and the still image are recorded in this way, when the user instructs the finalization, the management information, the intermediate management information acquired from the optical disc and held in the memory, UD for a computer is created by the management information and intermediate management information created by recording moving images and still images and stored in memory.
F data is created, and this data is recorded in an area secured in advance on the optical disc 18. In addition, VMG data for a DVD player is generated from only the management information of the moving image file, and is similarly recorded on the optical disc 18.

As a result, in the recording / reproducing apparatus 11, the management information as a group is collectively recorded for all the files recorded on the optical disk 18 in the computer UDF area of the management information recording area of the optical disk 18. On the other hand, in the VMG area for DVD, the management information by the group is collectively recorded only for the moving image file which is the file of the specific attribute recorded on the optical disc.

As a result, when the optical disc thus finalized is reproduced from the DVD player, D
Since the file recorded on the optical disk 18 is reproduced with the VMG area for VD as a reference, recording of a file such as a still image does not affect the reproduction of a moving image and is surely performed in the DVD video format. You can play the video.

When the optical disc thus finalized is reproduced by a computer, the UDF
Is a file management format compatible with the file management system of a computer. In a computer, by playing each file with UDF (Fig. 5), not only moving picture files but also still picture files and the like can be played and used. It becomes possible to do.

By the way, in the state before finalizing in this way, when the optical disc 18 in which the extension file is recorded in this way is loaded in another DVD recorder, in order to detect the intermediate management information in this DVD recorder. In the end, the location designated by the NWA will be used as the reference.

As a result, assuming that the NWA can be updated only in the direction of increasing addresses, the NWA should be updated only when a file having a file size larger than the original file is recorded when the initially recorded file is deleted. As a result, the intermediate management information is repeatedly recorded at the same location when the file is updated repeatedly.

FIG. 6 is a chart showing this state, in which an area is secured on the virgin disk by padding and the VTS
After recording (FIGS. 6A to 6D), the extension file E
This is a case where F is recorded (FIG. 6E) and the intermediate management information DK is recorded (FIG. 6F). Here, when the intermediate management information DK is recorded, the NWA indicates an area following the intermediate management information DK as indicated by an arrow, and even when the extension file EF is deleted (see FIG. 6).
(H)), and even when recording and deletion are repeated for a file having a smaller file size than the original file (FIGS. 6 (H) to (J)), the value is held without being updated. As a result, the intermediate management information DK based on this NWA is repeatedly recorded at the same location. In the example of FIG. 6, the intermediate management information DK is recorded immediately before the location specified by the NWA.

On the other hand, in this embodiment,
If you want to delete multiple files managed by one intermediate management file recorded at the end at the same time, N
From the beginning of the unrecorded area specified by WA,
As the recordable area becomes continuous back to the recording start side, a command for returning NWA to the head position where the file is deleted is sent from the system block 16, and the drive block 17 updates the NWA in response to this command. To be done.

As a result, as shown in FIG. 5 in comparison with FIG. 6, at the recording position of the intermediate management information DK specified by the NWA, the file and the intermediate management information DK are deleted each time the extended file is deleted. It is possible to prevent the repeated recording of the intermediate management information DK at the same location by changing variously according to the file size. As a result, the life of the optical disc 18 can be extended accordingly.

On the other hand, when one of the extension files collectively managed by one intermediate management file is deleted in this way, in the recording / reproducing apparatus 11, the drive block 17 makes the intermediate so as to correspond to this deletion. The management file is added. In this process, if the last file is deleted from the extended files that are collectively managed as described above, the intermediate management information is deleted from the first area of the deleted file instead of the additional write process. DK is recorded, and the NWA is updated on the drive block 17 side to correspond to this. As a result, in the optical disc 18, the consumption of the recording area due to the repetition of additional recording is reduced, and the information recording surface can be effectively used accordingly.

(3) Effects of the Embodiments According to the configuration described above, the NWA, which is the position information indicating the start address of the unrecorded area, is updated in response to the deletion of the file recorded on the optical disc. For example, when a file other than a moving image is recorded and this file is updated, the life of the optical disc can be extended.

At this time, such update processing is executed by the position information held in the memory, and when the optical disc is ejected,
Alternatively, when the power is shut off, the position information of the optical disc is updated by the position information held in the memory, so that the frequency of updating the position information can be reduced and the life of the optical disc can be extended accordingly.

Since this position information is NWA in the DVD video format, a file such as a still image can be recorded in addition to the recording of the moving image in the DVD video format.

That is, when a file and a file management information are paired and the file is a moving image file, the file and the management information are set so that the file management information, the file, and the management information backup information are sequentially consecutive. If the file is a file other than a moving image, the file and the management information are recorded so that the file and the corresponding management information are in the order, and the recording position of the management information can be specified by the position information. By recording, in addition to recording a moving image in the DVD video format, a file such as a still image can be recorded.

(4) Other Embodiments In the above-described embodiments, the case where the intermediate management information is recorded immediately before the NWA has been described, but the present invention is not limited to this, and is fixed for the NWA. It can be widely applied when the intermediate management information is recorded so as to have the relationship of

Further, in the above-described embodiment, the case where the intermediate management information, which is temporary management information until finalization, is applied as the management information to be recorded together with the file has been described, but the present invention is not limited to this. Alternatively, even after the finalization, it can be widely applied to the recording of usable management information and the like.

Further, in the above-mentioned embodiment, the case where the management information is collectively recorded on the optical disc for the plurality of extension files recorded immediately before is described, but the present invention is not limited to this. It can be widely applied to the case where the management information is collectively recorded on the optical disk for all the extension files recorded on the optical disk until then, and further, the management file is recorded for each file.

Further, in the above-mentioned embodiment, the case where a still image file is recorded as the extension file has been described, but the present invention is not limited to this, and for example, a moving image file, a text file, a map in a format different from VTS. Various files can be widely applied to the extension file such as a data file.

In the above embodiment, the case where a series of processes is executed by the processing program installed in advance in the system block and the drive block has been described, but the present invention is not limited to this, and the network such as the Internet is used. It is widely used when this kind of processing procedure is executed by installing the program downloaded through the computer, etc., and when this kind of processing procedure is executed by installing the program provided by various recording media. Can be applied. As such a recording medium, a magnetic disk,
A recording medium such as an optical disk or a magnetic tape can be applied.

Further, in the above-mentioned embodiment, the case where the present invention is applied to the recording / reproducing apparatus having the image pickup function has been described, but the present invention is not limited to this, and this kind of processing is executed by the application program of the computer. It can also be widely applied to the case where

[0110]

As described above, according to the present invention, the position information indicating the start address of the unrecorded area is updated in response to the deletion of the file recorded on the optical disc.
For example, when a file other than a moving image is recorded and this file is updated, the life of the optical disc can be extended.

[Brief description of drawings]

FIG. 1 is a flowchart showing a processing procedure in an optical disc device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 3 is a diagram for explaining recording of an extension file in the recording / reproducing apparatus of FIG.

FIG. 4 is a chart provided for explaining intermediate management information.

FIG. 5 is a diagram for explaining an extension file update process.

FIG. 6 is a diagram for explaining an extension file update process when the NWA is not updated.

FIG. 7 is a diagram for explaining a DVD video format.

FIG. 8 is a chart for explaining recording by the ROW method.

[Explanation of symbols]

11 ... Recording / reproducing device, 16 ... System block, 1
7 ... drive block, 18 ... optical disk

Claims (16)

[Claims] 1. A file is sequentially recorded from the head area side of the optical disk based on position information indicating the head address of an unrecorded area recorded on the inner circumference of the optical disk, and the file is recorded correspondingly. An optical disk device for updating the position information, wherein the position information is updated in response to deletion of a file recorded on the optical disk. 2. The position information recorded on the optical disk is held in a memory, the position information held in the memory is updated by recording and deleting a file on the optical disk, and when the optical disk is ejected or the power is cut off. The optical disk device according to claim 1, wherein the position information of the optical disk is updated based on the position information held in the memory. 3. The optical disk device according to claim 1, wherein the position information is NWA in a DVD video format. 4. A combination of the file and management information of the file, wherein when the file is a moving image file, the management information of the file, the file, and backup information of the management information are The file and the management information are recorded so as to be consecutive in succession. When the file is a file other than a moving image, the file and the corresponding management information are arranged in this order, and the management information is recorded. The optical disk device according to claim 1, wherein the file and the management information are recorded so that a position can be specified by the position information. 5. A recording in which the recording position of the management information can be specified by the position information is a position where the recording position specified by the position information follows a recording end position of the management information. The optical disk device according to claim 4, wherein 6. A file is sequentially recorded from the head area side of the optical disk based on position information indicating the head address of an unrecorded area recorded on the inner circumference of the optical disk, and the file is recorded correspondingly. An optical disc recording method for updating the position information, wherein the position information is updated in response to deletion of a file recorded on the optical disc. 7. The position information recorded on the optical disk is held in a memory, the position information held in the memory is updated by recording and deleting a file on the optical disk, and when the optical disk is ejected or the power is cut off. 7. The optical disc recording method according to claim 6, wherein the position information of the optical disc is updated based on the position information held in the memory. 8. The optical disc recording method according to claim 6, wherein the position information is NWA in a DVD video format. 9. A combination of the file and management information of the file, wherein when the file is a moving image file, the management information of the file, the file, and backup information of the management information are The file and the management information are recorded so as to be consecutive in succession. When the file is a file other than a moving image, the file and the corresponding management information are arranged in this order, and the management information is recorded. 7. The optical disc recording method according to claim 6, wherein the file and the management information are recorded so that a position can be specified by the position information. 10. The recording in which the recording position of the management information can be specified by the position information is a position where the recording position specified by the position information follows a recording end position of the management information. The optical disc recording method according to claim 9. 11. A file is sequentially recorded from the head area side of the optical disk based on position information indicating a head address of an unrecorded area recorded on the inner circumference of the optical disk, and the file is recorded correspondingly. A program of an optical disc recording method for updating the position information, wherein the position information is updated in response to deletion of a file recorded on the optical disc. 12. The position information recorded in the optical disk is held in a memory, the position information held in the memory is updated by recording and deleting a file in the optical disk, and when the optical disk is ejected or the power is cut off. The program of the optical disc recording method according to claim 11, wherein the position information of the optical disc is updated by the position information held in the memory. 13. The program for an optical disc recording method according to claim 11, wherein the position information is NWA in a DVD video format. 14. A combination of the file and management information of the file, wherein when the file is a moving image file, the management information of the file, the file, and backup information of the management information are The file and the management information are recorded so as to be consecutive in succession. When the file is a file other than a moving image, the file and the corresponding management information are arranged in this order, and the management information is recorded. The program of the optical disc recording method according to claim 11, wherein the file and the management information are recorded so that a position can be specified by the position information. 15. The recording in which the recording position of the management information can be specified by the position information is a position where the recording position specified by the position information follows a recording end position of the management information. The program of the optical disc recording method according to claim 14. 16. A file is sequentially recorded from the head area side of the optical disk based on position information indicating a head address of an unrecorded area recorded on the inner circumference of the optical disk, and the file is recorded correspondingly. In a recording medium recording a program of an optical disc recording method for updating the position information, the optical disc recording method program updates the position information in response to deletion of a file recorded on the optical disc. A recording medium on which a program of a recording method for an optical disc is recorded.