CN1649003A - Writing method for readable and readable digital versatile disc - Google Patents

Abstract

The invention relates to a writing method of a DVD-R/RW disc. The DVD-R/RW disc is made to meet the DVD + VR specification by DVD recordable player supporting DVD-R/RW disc and may be played in DVD player with only playing property.

Description

Writing method for readable and readable digital versatile disc

technical field

The present invention relates to the writing method of DVD-R/RW (readable and read-write digital versatile disc), and especially relates to the method of making DVD+VR standard on the DVD-R/RW disc.

Background technique

Due to the high-capacity characteristics of DVD discs, optical disc drives (Optical Disk Drive) and disc players (Disk Player) on personal computers can use recordable DVD discs (Recordable DVD disc) to record Computer files or audio-visual materials.

Many writable DVD discs are popular in the market now, for example, DVD-RAM discs, DVD-R/RW discs, and DVD+R/RW discs. Since the specifications of these optical discs are incompatible with each other, DVD recordable disc drives compatible with multiple specifications can be seen on the market, such as readable and writable DVD-R/RW and DVD+R/RW discs. Dual (Dual) CD-ROM drive.

Generally speaking, DVD disc players can be divided into playback-only DVD players and recordable DVD players. Playback-only DVD players can only play DVD discs that conform to the DVD-Video specification. The DVD-Video (DVD video) specification is used to standardize the recording of movies or program audio-visual data. That is to say, the current DVD player only supports playback of DVD-Video discs.

A recordable DVD player is a combination of a DVD recordable disc drive and related hardware. That is to say, if the DVD recordable disc player is a disc drive that supports DVD+R/RW discs, the recordable DVD player can only record DVD+R/RW discs, and it must meet the requirements when recording audio and video materials. DVD+Video Recoding (DVD Video Recording, DVD+VR for short) specification. If the DVD recordable disc player is a disc drive that supports DVD-R/RW discs, the recordable DVD player can only record DVD-R/RW discs, and it must comply with DVD-VideoRecording ( DVD-VR for short) specification.

Generally speaking, when a user puts a DVD-R/RW disc into a recordable DVD player, if the recordable DVD player only supports DVD+R/RW discs, audio and video data cannot be recorded. Furthermore, if the recordable DVD player can support DVD-R/RW discs, then the recordable DVD player will record audio and video data into DVD-VR specifications.

However, the DVD-VR specification is not compatible with the DVD-Video specification. That is to say, the audio-visual data recorded in the DVD-R/RW disc cannot be played in the DVD player which generally only has the playback property. DVD-R/RW discs can only be played on recordable DVD players that support DVD-R/RW discs. Therefore, it is very inconvenient to play the audio-visual data of the DVD-VR standard.

Contents of the invention

purpose of invention

The object of the present invention is to provide a writing method of DVD-R/RW disc. It is used to record DVD-R/RW discs to comply with DVD+VR specifications, and is suitable for displaying in DVD players that generally only play.

The present invention provides a method for writing DVD-RW discs, which is used to make DVD-RW discs comply with the DVD+RV specification by using a disc player supporting DVD-R/RW, which is briefly described as follows:

First, format the specific area between lbn0 and lbn4000h of the DVD-RW disc; write titles sequentially after this specific area; when each title is written, update the DVD description file in the specific area ; and, execute the closing action.

The present invention also provides a writing method of a DVD-RW disc, utilizing a disc drive supporting DVD-R/RW to make a DVD-R/RW disc conform to a DVD+RV specification, which is briefly described as follows:

First of all, the reserved track action is performed on the specific area between lbn0 and lbn4000h of the DVD-RW disc; after this specific area, titles are sequentially written, wherein, when each title is written, a write file and system are sequentially recorded. Data area and a reserved space configuration table; when all titles and their corresponding written files, system data area and reserved space configuration are written, according to all written files, system data area and all reserved space configurations to write the DVD description file in a specific area; and, to perform a closing action.

The present invention also provides a method for writing DVD-RW discs, which is used to make DVD-RW discs conform to the DVD+RV specification by using a disc drive supporting DVD-R/RW, which is briefly described as follows:

First, the DVD-RW disc is completely formatted; after the specific area between lbn0 to lbn4000h, the title is written; when each title is written, the DVD description file in the specific area is updated; and, execution Close action.

Description of drawings

Fig. 1 is a schematic diagram of the storage space of a DVD+RW optical disk conforming to the DVD+VR format at the application layer;

Fig. 2 is the flow chart that DVD-RW optical disc is made into conforming to DVD+RV specification;

FIG. 3 is a schematic diagram of the storage space of a DVD+R optical disc conforming to the DVD+VR specification;

Fig. 4 is the flow chart that DVD-R/RW optical disc is made into conforming to DVD+RV specification;

FIG. 5 is a flow chart of making a DVD-RW disc conforming to the DVD+RV standard.

Detailed ways

In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings related to the present invention. However, the drawings are only for reference and description, and are not intended to limit the present invention.

Because the known recordable DVD players that support DVD-R/RW discs can only record DVD-VR standard audio-visual data, therefore, the audio-visual data recorded by DVD-R/RW discs cannot be generally supported only by DVD-VR. Play it on a Video player. Therefore, the present invention proposes a method for writing DVD-R/RW optical discs. The present invention utilizes a recordable DVD player supporting DVD-R/RW optical discs to produce audio-visual data conforming to the DVD+VR standard.

Referring to FIG. 1 , it is a schematic diagram of the storage space of a DVD+RW disc conforming to the DVD+VR format at the Application Layer. Generally speaking, the storage space of DVD+RW discs under DVD+VR can be divided into 230540h (sixteen) logical blocks (Logical Block), therefore, Logical Block Number (Logical Block Number, hereinafter referred to as lbn) It can be from 0 to 23053Fh.

According to DVD+VR specification, the storage space between lbn0 to lbn4000h is to store DVD description file (DVD Descriptor File) 20, and there are two folders in DVD description file, and its content is as follows:

(I) VIDEO_TS: VIDEO_TS.IFO

VIDEO_TS.VOB

VTS_01_0.IFO

VTS_02_0.IFO

VTS_03_0.IFO

        :

          :

(II) VIDEO_RM: VIDEO_RM.IFO

The above-mentioned DVD description file 20 is a file system defined according to the DVD+VR specification, which conforms to the Universal Disk Format (hereinafter referred to as UDF) or the ISO9660 format. The DVD description file 20 is used to record the location, type, etc. of the data in the DVD+R/RW disc.

The logical block after lbn4000h is used to store video data, and the video data of each segment is called by title (Title). According to the DVD+R/RW specification, a maximum of 49 titles, that is, 49 pieces of video data, can be stored after lbn4000h.

Since the DVD+RW disc is a rewritable and modifiable disc, after the image data in each title is recorded, the size, position, format, etc. recorded in the title can be directly updated The DVD description file 20 in lbn0-lbn4000h.

For example, in Figure 1, after the image data in the first title (Title 1) is recorded, the size, position, format, etc. information recorded in the title can be directly recorded in lbn0~lbn4000h Among the 20 DVD description files. After the image data recording in the second title (Title 20) is completed, the data in the DVD description file 20 can be updated (Update). Therefore, the content and related information in the first title (Title 1) and the second title (Title 2) can be known according to the updated DVD description file 20. So on and so forth.

After all the titles (the first title and the second title) are recorded, just add a Temporary Lead In Zone (Temporary Lead In Zone) before the lbn position. Add a Temporary Lead In Zone (Temporary Lead In Zone) after the last title position. Out Zone) 50, you can complete a DVD+RW disc that meets the DVD+VR specification. Because the DVD+VR specification is compatible with the DVD+Video specification, the contents of DVD+RW discs can be played by DVD players that generally only support the DVD-Video specification.

Referring to Fig. 2, it is a flow chart of making a DVD-RW disc conforming to the DVD+RV standard.

Step 1: Format (Format) the DVD-RW disc lbn0 to lbn4000h area;

Step 2: write a title;

Step 3: Update the DVD description file in the area from lbn0 to lbn4000h;

Step 4: Determine whether other titles need to be written; if yes, skip to step 2; if not, skip to step 5; and

Step 5: Close Action (Close Session).

Since the writing of DVD-RW discs must be continuous, all areas before the title of the DVD-RW disc must be formatted, so that the title can continue to be written from the lbn4000h position. Furthermore, after all the titles have been written, the DVD-R/RW optical disc drive must be ordered again to perform the closing action, that is, the action of generating the lead-in area and the lead-out area. After the above steps are completed, the DVD-RW disc will meet the DVD+VR specification. Therefore, it can be played by DVD players that generally only support the playback of DVD-Video specifications.

Referring to FIG. 3 , it is a schematic diagram of the storage space of a DVD+R optical disc conforming to the DVD+VR standard. Since a DVD+R disc can only be written once, the DVD description files between lbn0~lbn4000h cannot be arbitrarily written. Therefore, when making a DVD+R disc that conforms to the DVD+VR specification, a Reserve Track (Reserve Track) action must be performed earlier. The so-called Reserve Track action is to keep the DVD description file 120 between lbn0～lbn4000h without recording data until After all the titles are recorded, write the content of all the titles and related information in the DVD description file again.

Since the DVD+R optical disc can only be written once, in order to write all title contents and related information to the DVD description file 120 once all titles are recorded. Therefore, a File And System Data Zone (File And System Data Zone) and a Reserve Space Allocation Table (Reserve Space Allocation Table, hereinafter referred to as RSAT) are defined after each title.

For example, after the recording of the image data in the first title (Title 1) is completed, the size, position, format... and other information recorded in the title can be recorded in the first file and system data area 122, In the first RSAT 124, the corresponding relationship between the file and the system data area 122 and the DVD description file 120 will be recorded. Assume that there is only one title in the DVD+R disc, which means that the content of the file and the system data area and the DVD description file will be consistent at this time. Therefore, as long as the content of the file and the system data area is copied between lbn0~lbn4000h to reserve the track region to complete the DVD description file.

Assuming that there are multiple titles in the DVD+R disc (as shown in Figure 3), the file and system data area after each title only records the difference from the previous file and system data area, and the position of the difference can be determined by RSAT Learned. Therefore, after all titles have been recorded, according to all files and system data areas 122,126 and RSAT 124,128 contents, the writing of the reserved track area between lbn0～lbn4000h can be carried out and the DVD description file 120 can be completed.

After all the titles are recorded, just add a lead in zone (Lead InZone) 140 before the lbn position and a lead out zone (Lead Out Zone) 150 after the last title position, the DVD+VR specification can be completed DVD+R discs. Because the DVD+VR specification is compatible with the DVD+Video specification, the contents of DVD+R discs can be played by DVD players that generally only support the DVD-Video specification.

Referring to FIG. 4 , it is a flow chart of making a DVD-R/RW disc conforming to the DVD+RV standard.

Step 6: Make the DVD-R/RW disc lbn0 to lbn4000h area as a reserved track (ReserveTrack);

Step 7: write a title;

Step 8: Write files and system data area;

Step 9: Write RSAT;

Step 10: Determine whether other titles need to be written; if yes, go to step 7; if not, go to step 10; and

Step 11: Close Action (Close Session).

Because the writing of DVD-R/RW optical disc must be continuous, therefore, must order DVD-R/RW optical disc drive to carry out track reservation action in all areas before title, like this, just can continue to start writing title by lbn4000h position. Furthermore, after the title is written, the file and system data area RSAT must be written after the title. After all the titles and corresponding writing files and system data area RSAT have been written, the DVD-R/RW disc must be closed, that is, the lead-in area and the lead-out area are generated. After the above steps are completed, the DVD-R/RW disc will meet the DVD+VR specification. Therefore, it can be played by DVD players that generally only support the playback of DVD-Video specifications.

Referring to FIG. 5 , it is a flow chart of making a DVD-RW disc conforming to the DVD+RV standard.

Step 12: Completely format the DVD-RW disc;

Step 13: Write a title in any area after the lbn4000h position;

Step 14: update the DVD description file in the area lbn0 to lbn4000h;

Step 15: Determine whether other titles need to be written; if yes, skip to step 2; if not, skip to step 5; and

Step 16: Close Action (Close Session).

Since the DVD-RW disc is completely formatted before writing, the writing of titles may not be continuous. Furthermore, the DVD description files in the area lbn0 to lbn4000h must still be updated after writing a title each time. After all the titles have been written, the DVD-R/RW optical drive must be ordered to close again, that is, to generate the lead-in area and the lead-out area. After the above steps are completed, the DVD-RW disc will meet the DVD+VR specification. Therefore, it can be played by DVD players that generally only support the playback of DVD-Video specifications.

The advantage of the invention is to provide a writing method for DVD-R/RW discs. It is used to solve the difference between the specifications of DVD-R/RW discs and the specifications of DVD+R/RW discs, and use recordable DVD players that support DVD-R/RW discs to record audio and video data into DVD+ VR specifications.

Another advantage of the present invention is to provide a DVD-R/RW disc writing method. It utilizes a recordable DVD player that supports DVD-R/RW discs to record video and audio data in compliance with the DVD+VR specification, and is suitable for playing in DVD players that generally only have playback properties.

In summary, although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art, without departing from the spirit and scope of the present invention, may make various Changes and modifications, so the scope of protection of the present invention shall be subject to the scope of claims.

Claims (9)

1. A writing method of a DVD-RW (readable and read-write digital versatile disc), for utilizing a disc drive supporting DVD-R/RW to make a DVD-RW disc conform to a DVD +RV specifications, the method includes the following steps: Perform a formatting action on an area between logical block 0 and logical block 4000h of the DVD-RW disc; writing at least one title sequentially after the area; When all the at least one title is written, updating a DVD description file in the area; and A shutdown action is performed after updating the DVD description file. 2. The method for writing DVD-RW disc as claimed in claim 1, wherein each title is used to store image data. 3. The method for writing a DVD-RW disc as claimed in claim 1, wherein the closing action generates a lead-in area and a lead-out area, and the lead-out area is located after the at least one title. 4. A writing method of a DVD-R/RW disc, used to utilize a disc drive supporting DVD-R/RW to make a DVD-R/RW disc comply with a DVD+RV specification, the method comprising Follow these steps: Perform a reserved track operation on an area between logical block 0 and logical block 4000h of the DVD-RW disc; At least one title is sequentially written after the area, wherein, when each at least one title is written, a file and system data area and a reserved space configuration table are sequentially recorded; When all the writing of the at least one title and its corresponding writing files and system data area and the reserved space configuration are completed, write according to all the writing files and system data area and all the reserved space configurations into a DVD description file in the area; and A shutdown action is performed after updating the DVD description file. 5. The method for writing DVD-RW discs as claimed in claim 4, wherein each of the titles is used to store image data. 6. The method for writing DVD-RW discs as claimed in claim 4, wherein the closing action generates a lead-in area and a lead-out area, and the lead-out area is located in the last reserved space corresponding to the at least one title After configuring the table. 7. A method for writing a DVD-RW disc, used to utilize a disc drive supporting DVD-R/RW to make a DVD-RW disc comply with a DVD+RV specification, the method comprising the following steps: Perform a complete format operation on the DVD-RW disc; writing at least one title after an area between logical block 0 to logical block 4000h of the DVD-RW disc; When each of the at least one title is written, updating a DVD description file in the area; and A shutdown action is performed after updating the DVD description file. 8. The method for writing DVD-RW discs as claimed in claim 7, wherein each of the titles is used to store image data. 9. The method for writing a DVD-RW disc as claimed in claim 7, wherein the closing action generates a lead-in area and a lead-out area, and the lead-out area is located after the at least one title.

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