CN1716427A - Recording device and method, host device, semiconductor circuit, and information recording medium - Google Patents

Abstract

A recording apparatus is provided for recording information in an information recording medium. The recording apparatus includes means for recording image data including a file structure and a file in the information recording medium; means for reproducing at least a part of the image data recorded in the information recording medium; means for comparing the reproduced data with a portion of the image data corresponding to the reproduced data so as to detect an area in which the recording of the image data has failed as an error area; means for extracting, as a repair data, data corresponding to data recorded in the error area from the image data; means for recording the repair data in the information recording medium; means for generating update information for updating the data recorded in the error area to the repair data; and means for recording the update information in the information recording medium.

Description

Recording device and method, host device, semiconductor circuit, and information recording medium

This non-provisional application is based on the priority of 35 U.S.C. §119(a), application number 2004-123499 filed in Japan on April 19, 2004, the entire contents of which are hereby incorporated by reference.

technical field

The present invention relates to an information recording medium, a recording device for recording information in the information recording medium, a host device, a semiconductor circuit, a recording method, and a program for causing the recording device to perform a recording operation.

Background technique

In recent years, various types of information recording media are often used to record digital data. In particular, a recordable (write-once) optical disc is gaining popularity even though the number of recordings is limited to one time because it is inexpensive.

Examples of optical discs include CD-R discs and DVD-R discs. A technique of incrementally writing data to a CD-R disc or DVD-R disc has been proposed (for example, Patent Publication 1). In particular, a VAT technique and a multi-border (or multi-session) approach are well known.

As a background of the present invention, a description will be given of how to record/reproduce data to/from a DVD-R disc using the VAT method and the multi-boundary method.

First, a recording method using a gradual VAT increase will be described with reference to the drawings. For example, a DVD-R disc is illustrated as an information recording medium. A procedure for recording the file and directory structure shown in FIG. 27 and a composite data structure on an information recording medium will be described below.

Formatting processing will be described with reference to FIG. 28 . FIG. 28 shows data at the moment after the format processing of the DVD-R disc (conventional information recording medium 10000).

The DVD-R disc is an information recording medium defined by the DVD-R physical specification. In addition, file recording employs a volume/file structure defined in the DVD-R file system specification. The DVD-R file system specification is compliant with the ISO/IEC 13346 standard or the Universal Disk Format (UDF) specification. In the following, it is assumed that the volume/file structure conforms to the UDF specification.

As shown in FIG. 28, the information recording medium 10000 has a data area composed of a lead-in area 10101 and a volume space 10109.

The lead-in area 10101 includes a physical format information area 10104 . The physical format information is provided for recording management information of various areas allocated on the information recording medium 10000 . The management information includes, for example, information on addresses in the out-of-border area described below, and the like. Note that this physical format information area 10104 is in an unrecorded state immediately after the formatting process.

The volume space 10109 includes a volume structure area 10410 , a file structure/file area 10420 , and a virtual allocation table (VAT) structure area 10430 .

In this volume structure area 10410, a volume structure defined in the UDF specification is recorded. The volume structure includes NSR descriptor, main volume descriptor, execution descriptor, partition descriptor, logical volume descriptor, unallocated space descriptor, terminal descriptor, logical volume integrity descriptor, anchor volume descriptor, etc. wait.

In this volume structure/file area 10410 are recorded a file group descriptor 10421 and FE(ROOT) 10422, which are used as the starting point of the directory hierarchy in the partition space. The FE (ROOT) 10422 is a file entry (file entry) of a ROOT directory file.

A file entry (hereinafter referred to as FE) is a data structure defined by the UDF specification, and is used to manage the position or size of a file to be recorded in the volume space. Note that it is assumed that the ROOT directory file is included in FE(ROOT)10422 for simplicity.

In this VAT structure area 10430, VAT 10431 and VAT ICB 10432 are recorded. In order to simplify the updating process of the file structure in the write-once recording medium, VAT is a data structure defined in the UDF specification.

When VAT is used, the recording position in the volume space of the file structure data, such as FE, is specified using a virtual address in the virtual address space. The VAT is used to maintain correspondence between logical addresses and virtual addresses in a logical address space, which is a recording location on an information recording medium.

With the above features, rewriting of data can be actually performed on an information recording medium that does not allow rewriting such as a DVD-R disc.

The recording position on the VAT information recording medium is indicated using the VAT ICB, which is allocated to the end sector (end sector) of the area where data is recorded on the information recording medium.

Next, in the file and directory structure of FIG. 27, the recording process of the directory (Dir-A) and the data file (File-a) will be described with reference to FIG. 29.

With regard to the information recording medium 10000 in the state of FIG. 28, during the recording process of the directory (Dir-A) and the data file (File-a), the data file (Flle-a) 10501, FE (File-a) are recorded. a) 10502, FE(Dir-A) 10503, and FE(ROOT) 10504 are recorded in a file structure/file area 10500 as shown in FIG. 29 . Note that the catalog file is included in FE(Dir-A)10503.

VAT 10521 and VAT ICB 10522 of newly registered FE 10502, 10503 and 10504 are recorded in VAT structure area 10520.

Further, when the end processing is performed, predetermined data is recorded in the border-out area 10530 that does not include the next border marker 10531 . Furthermore, predetermined data is recorded in the physical format information area 10104 of the lead-in area 10101 which is in an unrecorded state after the formatting process.

Note that end processing is performed to allow the information reproducing apparatus to retrieve the latest volume/file structure.

With regard to the information recording medium 10000 having the data structure after the formatting process of FIG. 28, the data structure of FIG. 29 is formed on the information recording medium 10000 when the file recording process and the end process are executed.

Next, in the file and directory structure of FIG. 27, the recording process of the directory (Dir-B) and the data file (File-b) will be described with reference to FIG.

In this case, the data file (File-b) 10601 and the file structure corresponding thereto, namely, FE(File-b) 10602, FE(Dir-B) 10603, and FE(ROOT) 10604, are recorded in the file structure/files area 10600.

In addition, the latest VAT structure, namely VAT 10611 and VAT ICB 10612, is recorded in the VAT structure area 10610.

Finally, by executing the end processing again, predetermined data is recorded in the border-out area 10620 that does not include the next border marker 10621 . Furthermore, the next marker 10531 allocated in the border-out area 10530 and the border-in area 10630 including the physical format information area 10631 is recorded.

With regard to the information recording medium 10000 having the data structure of FIG. 29, the data structure shown in FIG. 30 is formed on the information recording medium 10000 when the above-mentioned file recording program and end processing are executed.

Thus, the lead-in area 10101 recorded in the volume space 10109 or an area interposed between the border-in area and the border-out area is formed every time the end processing is performed. Hereinafter, this area is referred to as a border area.

For example, in FIG. 30, border area #110700 or border area #210701 is given. The border area is similar to a session of a CD-R disc.

Next, the process of reproducing a file will be described with reference to the reproduction process flowchart shown in FIG. 31 . For example, the process of reproducing the data file (File-a) 10501 is described for the purpose of illustration.

Data is reproduced from the physical format information area 10104 located in the lead-in area 10101 to obtain physical format information (step S1101).

Next, data of the next boundary marker is reproduced (step S1102). The physical format information obtained in step S1101 or step S1103 includes address information of the out-of-boundary area. Data of the next border mark is recorded at a predetermined position of the border-out area, and the next border mark is reproduced from the position.

For example, in FIG. 30 , the physical format information area 10104 includes address information of the out-of-boundary area 10530 . The physical format area 10631 included in the border-in area 10630 has address information of the border-out area 10620 .

When the next boundary mark reproduced in this step is in the recording state, there is a later recording boundary area, and therefore, step S1103 and subsequent steps are performed.

In accordance with the address information of the in-boundary area included in the physical format information obtained in step S1101 or step S1104, the next in-boundary area is reproduced (step S1103). The physical format information is obtained from the rendered in-bounds area.

When the next border mark reproduced in step S1102 is in an unrecorded state, the current border area is the latest, so step S1104 and subsequent steps are performed.

When the latest border area is reached, the obtained latest physical format information is referred to so that the physical address of the end of the accessible area is acquired from the border area address information (step S1104). In FIG. 30, the end of the border area #210701 is the end of the accessible area.

Thereafter, the volume structure is reproduced (step S1105). In this case, the volume structure area 10410 is reproduced.

The volume structure thus read includes the address information of the file group descriptor 10421 and the partition start position. In the case of the VAT method, the volume structure has a virtual partition image defined in the UDF specification. Based on this information, it is recognized that the VAT structure is recorded in the volume space.

Thereafter, the VAT ICB 10612 recorded at the end of the accessible area is reproduced (step S1106). The record position information of VAT is obtained from VAT ICB 10612 thus read in order to read VAT 10611.

When using the virtual address to manage the target file and its management information, the VAT 10611 obtained in step S1106 is used to index the VAT entry in which the file entry or directory of the target file is registered (step S1107).

Thereafter, with the file group descriptor 10421 in the file structure/file area 10420 as the starting point, the virtual address is translated into a logical address, and the FE (ROOT) 10604 in the file structure/file area 10600, recorded in FE ( ROOT directory in ROOT) 10604, FE (Dir-A) 10503 in file structure/file area 10500, directory (Dir-A) and FE (File-a) 10502 recorded in FE (Dir-A) 10503 .

In this way, the recording address of the data file (File-a) 10501 is obtained by the FE (File-a) 10502, and the data file (File-a) 10501 is reproduced.

The method of incrementally writing data to a DVD-R disc using the VAT method has been described previously. Alternatively, the multi-boundary method has been known as an incremental recording method different from the VAT method. In the case of CD-R discs, a similar approach is called the multi-session approach.

In this multi-border method, incremental data recording is performed on a border area by border area basis, and volume structures and file structures are also recorded on a border area by border area basis.

In this multi-boundary method, unlike the VAT method, data is not updated using virtual addresses. When the file structure is updated, the volume structure and the file structure are newly generated, and data is recorded in a new border area.

In this multi-boundary method, reproduction is performed by confirming the latest border area and recording the resulting latest volume structure.

Thereafter, the data is sequentially tracked in accordance with the data structure defined in the UDF specification, thereby reproducing the specified file. For example, data can be read out through a reproduction process similar to a read-only DVD-ROM disc or the like.

Also in the multi-boundary/multi-session approach, efficient data recording with image data is often performed.

When all files to be recorded are known in advance (for example, data backup, etc.), files including all file data to be recorded on the hard disk drive, volume structure and file structure thereof are created.

This file is a kind of image data. Image data is recorded into a border area (or session) by allocating it and continuously recording the image data.

Since recording is performed continuously and the file structure is created in advance, the overhead of recording is small, thereby making it possible to record image data at a high speed.

[Patent Publication 1] US Patent No. 5666531

However, when the above-mentioned image data is used as a record, it is impossible to repair an error, if any, in the recorded data.

If data is recorded when performing a verification process in which the data is reproduced immediately after the data is recorded to determine whether the recording is successful, the number of times of access by the recording head is greatly increased, resulting in a large delay in the recording time. increase.

Contents of the invention

A recording device for recording information in an information recording medium. The recording apparatus includes: means for recording image data in an information recording medium, the image data including file structures and files; means for reproducing at least a part of the image data recorded in the information recording medium; means for comparing data with a part of the image data corresponding to the reproduced data, so as to detect an area in which an error occurs in the recording of the image data as an error area; means for extracting data of the data of the data as repair data; means for recording repair data in an information recording medium; means for generating update information to update data recorded in an error area as repair data; A device for recording update information on the information recording medium.

In one embodiment of the present invention, the means for generating update information generates the update information so that the update information includes replacement management information that combines information indicating the recording position of data recorded in the error area with information indicating the repair The information on the recording location of the data is related to each other.

In one embodiment of the present invention, the reproduced data of each file included in the image data is compared with the part of the image data corresponding to the reproduced data.

In one embodiment of the present invention, the recording device further includes means for determining whether the file in the image data is a real-time file, wherein when it is determined that the file is not any real-time file, the repair data is recorded on the information recording medium middle.

In one embodiment of the present invention, the recording device further includes: means for determining the length of the range including a part of real-time data, so that when the data recorded in the error area includes a part of real-time data, it can be reproduced continuously real-time data; and means for extracting data corresponding to the range from the image data as repair data, wherein the means for generating update information generates update information such that the update information includes replacement management information, the replacement The management information correlates a first address indicating the position of data recorded in the error area with a second address indicating the recording position of the repair data and the second address information.

In another aspect of the present invention, there is provided a host device used in a recording device that records information in an information recording medium. The host device includes a system control section, wherein the system control section is configured to control a drive device including a recording/reproducing section for performing a recording operation or a reproducing operation of the information recording medium. The system control section includes: means for instructing the drive device to record image data including file structures and files in the information recording medium; means for instructing the drive device to reproduce at least a part of the image data recorded in the information recording medium , thereby obtaining means for reproduced data; for comparing the reproduced data with a part of image data corresponding to the reproduced data, thereby detecting an area in which an error occurred in recording of the image data as an error area; for obtaining from the image data Means for extracting data corresponding to data recorded in the error area as repair data; means for instructing the drive device to record repair data in the information recording medium; for generating data to be recorded in the error area means for updating update information as repair data; and means for instructing the drive apparatus to record the update information in the information recording medium.

In another aspect of the present invention, there is provided a semiconductor integrated circuit used in a recording device for recording information in an information recording medium. The semiconductor integrated circuit is provided to control a drive device including a recording/reproducing section for performing a recording operation or a reproducing operation of an information recording medium. The semiconductor integrated circuit includes: means for instructing the drive device to record image data including a file structure and files in the information recording medium; and for instructing the drive device to reproduce at least a part of the image data recorded in the information recording medium , thereby obtaining means for reproduced data; for comparing the reproduced data with a part of image data corresponding to the reproduced data, thereby detecting an area in which an error occurred in recording of the image data as an error area; for obtaining from the image data Means for extracting data corresponding to data recorded in the error area as repair data; means for instructing the drive device to record repair data in the information recording medium; for generating data recorded in the error area means for updating update information as repair data; and means for instructing the drive apparatus to record the update information in the information recording medium.

In another aspect of the present invention, a recording method for recording information in an information recording medium is provided. The recording method includes the steps of: recording image data in an information recording medium, the image data including a file structure and files; reproducing at least a part of the image data recorded in the information recording medium; A part of the image data is compared in order to detect an area where an error occurs in the image data record, and use it as an error area; from the image data, the data corresponding to the data recorded in the error area is extracted as repair data; in the information record recording repair data in the medium; generating update information to update the data recorded in the error area to the repair data; and recording the update information in the information recording medium.

In another aspect of the present invention, a method for recording information in an information recording medium is implemented in a host device used in the recording device. The method includes the steps of: instructing a drive device to record image data in an information recording medium, the image data including a file structure and files; instructing the drive device to reproduce at least a part of the image data recorded in the information recording medium, thereby obtaining reproduction data; compare reproduced data with a part of image data corresponding to the reproduced data, thereby detecting an area in which an error occurs in the recording of the image data as an error area; The data of the data is extracted as repair data; Instruct the drive device to record the repair data in the information recording medium; Generate update information for updating the data recorded in the error area to the repair data; and Instruct the drive device to update the information recorded on an information recording medium.

In another aspect of the present invention, a program for recording information in an information recording medium is implemented in a host device used in the recording device. The program includes the steps of: instructing a drive device to record image data in an information recording medium, the image data including a file structure and files; instructing the drive device to reproduce at least a part of the image data recorded in the information recording medium, thereby obtaining reproduce data; compare the reproduced data with a part of image data corresponding to the reproduced data, thereby detecting an area in which an error occurs in the recording of the image data as an error area; from the image data corresponding to the image data recorded in the error area data of the data extracted as repair data; instruct the drive device to record the repair data in the information recording medium; generate update information for updating the data recorded in the error area to the repair data; and for instructing the drive device to The update information is recorded on the information recording medium.

In another aspect of the present invention, there is provided an information recording medium having update information recorded thereon. This update information is information indicating that the data recorded in the error area has been updated to repair data. The error area is an area in which an error occurs in the recording of image data. The repair data is obtained by extracting data corresponding to the data recorded in the error area from the image data.

According to the present invention, even if an error occurs in the recording of image data, the data can be repaired. As a result, reliable data recording/reproduction can be accomplished.

In addition, the image data can be recorded at a high speed compared with sequentially performing inspection processing.

Thus, the present invention described here makes it possible to provide the advantages of an information recording medium in which, even when image data is used for recording files, data can be reliably recorded/reproduced, and even if a recording failure occurs, the failure can be repaired , A method and apparatus for recording information on an information recording medium, and a method and apparatus for reproducing information recorded on the information recording medium.

These and other advantages of the present invention will become apparent to those skilled in the art upon reading and understanding the ensuing detailed description with reference to the accompanying drawings.

Description of drawings

FIG. 1A is a graph showing external characteristics of an information recording medium according to an embodiment of the present invention.

FIG. 1B is a diagram showing a data structure of an information recording medium according to an embodiment of the present invention.

FIG. 1C is a diagram illustrating a data structure of a user data area according to an embodiment of the present invention.

FIG. 2A is a diagram illustrating a data structure of a replacement management information table according to one embodiment of the present invention.

FIG. 2B is a diagram showing a data structure of replacement management information.

FIG. 3A is a diagram illustrating a data structure of session management information according to one embodiment of the present invention.

FIG. 3B is a diagram illustrating a data structure of tracking management information according to one embodiment of the present invention.

FIG. 3C is a diagram illustrating a data structure of spatial bitmap management information according to one embodiment of the present invention.

FIG. 4 is a diagram illustrating a state in which unrecorded area management is performed in a user data area according to an embodiment of the present invention.

FIG. 5 is a diagram illustrating a data structure of disk structure information according to one embodiment of the present invention.

FIG. 6 is a diagram showing a data structure of another information recording medium according to an embodiment of the present invention.

FIG. 7 is a block diagram showing the structure of an information recording/reproducing apparatus according to an embodiment of the present invention.

FIG. 8A is a diagram showing a data structure of an information recording medium according to an embodiment of the present invention.

Figure 8B is a diagram illustrating an example of a file/directory structure according to an embodiment of the present invention.

FIG. 9A is a diagram illustrating a data structure of image data according to one embodiment of the present invention.

Figure 9B is a diagram illustrating another arrangement of data in a metadata file according to one embodiment of the present invention.

FIG. 10 is a diagram for explaining the data structure of a metadata file defined in UDF specification version 2.5.

FIG. 11A is a diagram illustrating a data arrangement of a volume structure area according to one embodiment of the present invention.

FIG. 11B is a diagram showing the data arrangement of the volume structure area according to one embodiment of the present invention.

FIG. 12 is a flowchart illustrating a recording process according to one embodiment of the present invention.

FIG. 13 is a diagram showing a data structure of an information recording medium according to an embodiment of the present invention.

FIG. 14 is a flowchart illustrating a repair process according to one embodiment of the present invention.

FIG. 15 is a diagram showing a data structure of an information recording medium after an image data restoration process according to an embodiment of the present invention.

FIG. 16 is a flowchart illustrating a reproduction process according to one embodiment of the present invention.

FIG. 17 is a flowchart showing a repair process according to one embodiment of the present invention.

FIG. 18 is a diagram showing a data structure of an information recording medium according to an embodiment of the present invention.

FIG. 19 is a diagram showing a data structure of an information recording medium according to an embodiment of the present invention.

FIG. 20 is a diagram showing a data structure of image data according to one embodiment of the present invention.

FIG. 21 is a flowchart illustrating a recording process according to one embodiment of the present invention.

FIG. 22 is a diagram showing a data structure of an information recording medium according to an embodiment of the present invention.

Figure 23 is a flow chart illustrating a repair process according to one embodiment of the present invention.

FIG. 24 is a flow chart showing a repair recording process according to one embodiment of the present invention.

FIG. 25A is a diagram showing a data structure of an information recording medium according to an embodiment of the present invention.

Fig. 25B is a diagram showing a data structure of an information recording medium according to an embodiment of the present invention.

FIG. 26 is a flowchart illustrating a reproduction process according to one embodiment of the present invention.

Fig. 27 is a diagram showing a file/directory structure recorded in an information recording medium.

FIG. 28 is a diagram showing a data structure of an information recording medium after a formatting process according to a conventional technique.

FIG. 29 is a diagram showing a data structure of an information recording medium after a file recording process according to a conventional technique.

FIG. 30 is a diagram showing a data structure of an information recording medium after a file recording process according to a conventional technique.

Fig. 31 is a flowchart showing a file reproduction process according to a conventional technique.

Detailed ways

Hereinafter, the present invention is explained by way of explaining examples with reference to the accompanying drawings.

(Example 1)

FIG. 1A is a graph showing external characteristics of an information recording medium 100 according to an embodiment of the present invention.

The lead-in area 101 is arranged at the innermost edge of the information recording medium 100 . The lead-out area 103 is arranged at the outermost edge of the information recording medium 100 . The data area 102 is arranged between the lead-in area 101 and the lead-out area 103 of the information recording medium 100 .

In the lead-in area 101, a reference signal necessary for the optical pickup to access the information recording medium 100, an identification signal for distinguishing the information recording medium 100 from other recording media, and the like are recorded. Also in the lead-out area 103, information similar to that recorded in the lead-in area 101 is recorded.

A plurality of physical sectors are allocated to the lead-in area 101 , the data area 102 and the lead-out area 103 . Each sector is the smallest access unit. Each sector can be identified by address information (ie, physical sector number; hereinafter referred to as "PSN").

Data can be recorded/reproduced as a minimum unit of an ECC block (or ECC cluster) including a plurality of physical sectors.

FIG. 1B shows the data structure of the information recording medium 100 . In FIG. 1B , the lead-in area 101 , the data area 102 and the lead-out area 103 shown concentrically in FIG. 1A are shown in the horizontal direction.

The lead-in area 101 includes a disk management information area 104 . The lead-out area 103 includes a disk management information area 105 . In each of the disk management information areas 104 and 105, disk management information is recorded. The disk management information includes replacement information, session management information, space bitmap management information and the like.

As will be described, a part of the disk management information areas 104 and 105 is used as an area for updating the disk management information. This area is called the temporary disk management information area.

The replacement information is called a replacement management information list, and includes original location information indicating the location of a failed sector on the information recording medium 100 (or an ECC block including a failed sector); and replacement location information indicating that it can be used The location of the replacement sector that replaces the failed sector (or the ECC block that includes the replacement sector).

The data area 102 includes a spare area 106 , a user data area 108 and a spare area 107 .

Each of the spare areas 106 and 107 is an area including a replacement sector which is used in place of a failed sector.

The user data area 108 is used to record user data.

Typically, replacement recording incorporating replacement information and spares is performed in conjunction with the detection process. The detection process is referred to as a process for reproducing data immediately after recording the data, and comparing the reproduced data with the recorded data to determine whether the data is correctly recorded.

When an error occurs during the detection process, that is, data is not recorded correctly, replacement recording is performed. That is, the defective sector (or the ECC block including the defective sector) is replaced with the replacement sector (or the ECC block including the replacement sector), and data is recorded in the replacement sector (or the ECC block including the replacement sector). ECC block of the replacement sector). This method is called the linear permutation method.

By using a replacement mechanism obtained by combining replacement information and replacement sectors, it is possible to implement pseudo-overwrite recording to a write-once information recording medium.

Next, pseudo-overwrite recording will be explained with reference to FIGS. 2A and 2B. This pseudo-overwrite recording is referred to as a method for mapping a physical address on which data is actually recorded at another place without changing the surface logical address recorded on the surface of the data. In order to perform such mapping, a replacement management information list 1000 shown in FIG. 2A is used as replacement information.

FIG. 2A shows the data structure of the replacement management information list 1000 .

The replacement management information list 1000 includes header information 1001 and a plurality of replacement management information 1010 (for example, replacement management information #1, #2, #3, . . . ).

The header information 1001 includes a replacement management information number included in the replacement management information list 1000 . The replacement management information includes information indicating the above-mentioned mapping.

FIG. 2B shows the data structure of the replacement management information 1010. The replacement management information 1010 includes status information 1011 , original location information 1012 , and replacement location information 1013 .

Status information 1011 has status information on the map. For example, status information 1011 indicates the valid/invalid status of original position information 1012 and replacement position information 1013 .

Original location information 1012 indicates the location (eg, physical address) of original information.

The replacement location information 1013 indicates the location (for example, physical address) of the replacement information.

The above-described mapping is performed by converting the location (eg, physical address) of the original information indicated by the original location information 1012 into the location (eg, physical address) of the replacement information indicated by the replacement location information 1013 .

If rewriting of data is instructed with respect to the logical address of data already recorded at the location, new data is recorded in a sector having a physical address different from the physical address of the sector in which the data is recorded, Generate new replacement management information 1011 for mapping the sector recording the data to the sector recording new data, and add the new replacement management information 1011 to the replacement management information list 1000 . Thus, while the logical address is held, even if the data is not physically rewritten, a state in which the data is dummy rewritten can be implemented by updating the replacement information.

Hereinafter, such a recording method is called pseudo-overwrite recording. Use pseudo-rewrite records to implement the repair record method described below.

Next, unrecorded area management on the user data area 108 will be explained. According to the continuous recording method, unrecorded area management will be described with reference to FIG. 1C , and next, unrecorded area management according to the random recording method will be described with reference to FIG. 4 .

FIG. 1C shows the state in which the unrecorded area management is in accordance with the continuous recording method performed on the user data area 108 shown in FIG. 1B.

User data area 108 includes a number of sessions. Each session consists of multiple tracks. Thus, the user data area 108 is managed by the session/tracking unit.

Each track on the information recording medium 100 is a contiguous area. Each track is managed by track management information described below.

Each session includes a plurality of tracks, which are consecutively allocated on the information recording medium 100 . Each session is managed by the following session management information.

FIG. 3A shows a data structure of session management information 200 for managing sessions. Session management information 200 is included in disk management information.

Disk management information is recorded in the disk management information area 104 . The disk management information area 105 is provided to improve the reliability of the information recording medium 100 . Specifically, the disk management information area 105 is an extended storage area for recording a copy of the disk management information recorded in the disk management information area 104 and data that cannot be recorded in the disk management information area 104 . Hereinafter, a detailed description of the disk management information area 105 will be omitted.

Session management information 200 includes header information 201 and pieces of track management information.

The header information 201 has general information such as the identifier of the session management information 200 , the number of track management information 210 shown in FIG. 3B .

Track management information #N has information corresponding to track #N shown in FIG. 1C. Here, N is an integer greater than or equal to 1.

FIG. 3B shows a data structure of track management information 210 for managing tracks. This track management information 210 is included in disk management information.

The track management information 210 includes session start information 211 for indicating whether the track is a track of a session; track start position information 212 for indicating a track start position; The address information 213 is the latest record.

If a track managed by certain track management information is located at the leading position of the session, a value (for example, “1”) indicating that the track is located at the leading position of the session is set as the session start information 211 . Otherwise, another value (for example, “0”) is set as the session start information 211 .

The track start position information 212 includes a physical address indicating a track start position.

The latest recorded address information 213 includes a physical address indicating a position within a track at which data is latest recorded. The latest recording address in the track 121 shown in FIG. 1C is an example of the position indicated by the latest recording address information 213 .

In an embodiment of the present invention, data can be recorded track by track. Data is recorded starting from the leading position of each track, and data is continuously allocated in the track (sequential recording). After data recording is performed in a track, the position of the latest recorded data in the track is reflected by the latest recording address information 213 .

By checking the latest value of the latest recording address information 213 when recording is restarted in the track, it is possible to determine the next recording start position in the track. Normally, the next recording start position is the physical sector next to the physical sector indicated by the latest recording address information 213 .

Alternatively, when data recording is performed on the information recording medium 100 which is the minimum unit of an ECC block, the next recording start position may point to the ECC next to the ECC block including the physical sector indicated by the latest recording address information 213. piece.

In session #2 shown in FIG. 1C, the unrecorded area 122 following the latest recorded address 121 is a spare space area in which data can be recorded.

A track having a recordable data state is called an open track (or recordable track). The track numbers of the open tracks are included in the header information 201 of the session management information 200 shown in FIG. 3A (for example, the first open track number 203, the second open track number 204, etc.).

A track having a data unrecordable state for some reason (for example, non-existence of unrecorded area, user instruction) is called an end track (or unrecordable track). The track number of the ending track is not included in the header information 201 .

By checking the track number of the open track and the latest recording address information 213, it is possible to detect the spare space area on the information recording medium 100.

FIG. 4 shows a state in which unrecorded area management according to the random recording method is performed on the user data area 108 shown in FIG. 1B.

A random recording that records data at any arbitrary position on the information recording medium, which can be performed even on the write-once information recording medium 100 by managing recording sectors (or ECC blocks). FIG. 4 shows a state where data has not been recorded in the unrecorded area 110 and an area whose position is closer to the inside of the periphery than the position indicated by the latest recording address 120 has been used for recording data.

In order to carry out this random recording, it is necessary to manage the spare space area and the latest recording address on the information recording medium 100 . In this embodiment, such management can be performed by recording the disk structure information 1100 in the disk management information areas 104 and 105 .

FIG. 5 shows the data structure of the disk structure information 1100 recorded in the disk management information area 104 .

This disk structure information 1100 includes latest recording address information 1107 . The latest recorded address information 1107 indicates the latest recorded address 120 .

In the disk management information area 104, space bitmap management information 220 shown in FIG. 3C is also recorded. The space bitmap management information 220 includes header information 221 , management area information 222 and space bitmap information 223 .

The header information 221 has general information such as an identifier for the space bitmap management information 220 and the like.

The management area information 222 includes information indicating an area in the user data area 108 (including sectors (or ECC blocks)) whose unrecorded/recorded status is managed by the space bitmap management information 220 . For example, the management area information 222 includes the start position of the area and the length of the area.

The space bitmap information 223 has information indicating whether each sector included in the management area is in an unrecorded state or a recorded state. For example, one bit of data is assigned to each sector. For example, "0" is assigned to an unrecorded sector, and "1" is assigned to a recorded sector. By this, the unrecorded/recorded status of all sectors in the management area can be managed.

As described above, it is possible to manage the unrecorded/recorded status of sectors on the information record 100 using either the session management information 200 or the space bitmap management information 220 . Therefore, the session management information 200 or the space bitmap management information 220 can be selected and used depending on the application. Alternatively, these two kinds of information can also be used at the same time. Information on the unrecorded area management method is included in the recording mode information 1106 of the disk structure information 1100 .

The disk structure information 1100 also includes general information 1101 related to the entire disk structure information 1100, replacement management information list position information 1102 indicating the position of the latest replacement management information list 1000 in the disk management information areas 104 and 105, and replacement management information list position information 1102 indicating the user data area User data area start position information 1103 at the start position of 108, user data area end position information 1104 indicating the end position of the user data area 108, and spare area information 1105 and spare area management information 1109 indicating the sizes of the spare areas 105 and 107 , and the area available for displacement.

By using the spare area information 1105, the size of the spare area can be changed according to each information recording medium. Further, by using the disk management information location information 1108, it is possible to provide the above-described temporary disk management information area in the spare area 106 or the spare area 107.

The disk structure information 1100 also includes session management information position information 1110 for representing the position of the latest session management information 200 in the disk management information areas 104 and 105, and for representing the latest space bitmap management information in the disk management information areas 104 and 105. The spatial bitmap of the location of the information 220 manages the information location information 1111 .

In the examples shown in FIG. 1C and FIG. 4, user data recorded in the user data area 108 is managed through a file system. The space managed by the file system is called volume space 109 .

A number of logical sectors are allocated to the volume space 109 . Each logical sector can be identified by address information (ie, logical sector number; hereinafter referred to as "LSN").

Please note that in the following description, the descriptors, pointers, etc. recorded on the information recording medium 100 are used as the volume/file structure of the file system, and unless otherwise specified, it is assumed that they have ) data structure defined by the specification.

The metadata partition and metadata file structures described below are considered to be data structures defined with version 2.5 or version 2.6 of the UDF specification.

It is described that the information recording medium 100 shown in FIGS. 1A to 1C has only one recording layer. However, there may be an information recording medium having two or more recording layers.

FIG. 6 shows the data structure of an information recording medium 100b having two recording layers. In FIG. 6, L0 denotes the first layer, and L1 denotes the second layer.

Each of the first and second layers has substantially the same structure as the information recording medium 100 . Specifically, the lead-in region 101 is provided at the innermost periphery of the first layer, and the lead-out region 103a is provided at the innermost periphery of the second layer. Further, an outer region 103b is provided at the outermost periphery of the first layer, and an outer region 103c is provided at the outermost periphery of the second layer. The lead-in area 101, the external area 103b, the lead-out area 103a, and the external area 103c include disk management information areas 104, 105, 104a, and 105a, respectively.

Further, as shown in FIG. 6, spare areas 106, 106a, 107, and 107a are given. The size of each spare area can be changed for each information recording medium as described above. Further, it is possible to provide an additional temporary disk management information area in each spare area.

The user data areas 108 and 108a are handled as one volume space logically having consecutive logical addresses.

As described above, an information recording medium having a plurality of recording layers can be logically handled as an information recording medium having a single recording layer.

Hereinafter, an information recording medium having a single recording layer will be explained. This description can be applied to an information recording medium having a plurality of recording layers. An information recording medium having a plurality of recording layers will be described as needed.

FIG. 7 shows a structure of an information recording/reproducing device 300 according to an embodiment of the present invention.

This information reproduction device 300 includes a host device 305 and a drive device 310 .

For example, the host device 305 may be a computer system or personal computer.

The drive device 310 may be any one of a recording device, a reproducing device, or a recording/reproducing device. The entire information recording/reproducing system 300 may be called a recording device, a reproducing device, or a recording/reproducing device.

The host device 305 includes a system control section 301 and a storage circuit 302 . Host device 305 may also include a magnetic disk device 304 such as a hard drive. Components in host device 305 are connected to each other through I/O bus 303 .

For example, the system control section 301 can be implemented with a microprocessor including a system control program and an operating memory. The system control section 301 performs control and operation of volume structure/file structure recording/reproduction of the file system, metadata partition/file structure recording/reproduction, file recording/reproduction, lead-in/lead-out area recording/reproduction, and the like.

Storage circuitry 302 is used, for example, for the execution and temporary storage of volume structures, file structures, metadata partitions/file structures, and files.

The drive device 310 includes a drive control section 311 , a storage circuit 312 and a recording/reproducing section 314 . Components in drive device 310 are connected to each other via I/O bus 313 .

The drive control section 311 can be implemented as, for example, a microprocessor including a drive control program and an operating memory. The drive control section 311 controls and executes recording/reproduction, pseudo-rewriting/reproduction, and the like of the disk management information area and the spare area.

The system control section 301 and drive device control section 311 shown in FIG. 7 can be implemented as a semiconductor integrated circuit such as LSI. Alternatively, they can also be implemented as a general-purpose processor and memory (eg ROM).

Programs executed by a computer (eg, a general-purpose processor) are stored in a memory (eg, ROM). The program may represent a reproduction process or a recording process according to the present invention, which will be described below. Any computer (for example, a general-purpose processor) executes the reproduction process or the recording process according to the program according to the present invention.

The storage circuit 312 is used, for example, for execution and temporary storage of data on a disk management information area or a spare area and data transferred to the drive device 310 .

Next, the data structure at the time immediately before recording image data on the information recording medium 100 in the embodiment of the present invention will be described with reference to FIG. 8A.

In FIG. 8A , there are a lead-in area 101 including a disk management information area 104 and a lead-out area 103 including a disk management information area 105 . Data has not been recorded in the volume space 109 yet.

Assuming this state, the procedure and data structure shown in FIG. 8B when recording image data 500 including a hierarchical structure of files and directories will be explained.

In Fig. 8B, there are File-a, Dir-A, AV-File and AV-Dir, File-a is a common data file, Dir-A is its parent directory, and AV-File includes AV coded according to the MPEG scheme, etc. data, AV-Dir is its parent directory.

AV data is referred to as data including at least one of audio data and video data. AV data is also called real-time data. A file including AV data is called an AV file. AV files are also called real-time files. Unlike general-purpose data files, real-time files are to be recorded/reproduced without interruption. When real-time data is recorded in the information recording medium 100 , the recording process is controlled so that real-time files are allocated in physically continuous areas on the information recording medium 100 .

The contiguous area is called a contiguous data area (CDA) in the DVD specification.

Conditions for the continuous area determined as parameters represent: the data rate of AV data included in the real-time file, the access performance or reproduction performance of the drive device, and the size of the buffer memory.

In the UDF specification, a file type representing a real-time file is defined (=249). Live files are managed separately from common data files.

FIG. 9A shows the data structure of image data 500 . Image data 500 is data obtained by combining the file/directory hierarchical structure shown in FIG. 8B and file management information for managing the file/directory hierarchical structure.

Image data 500 includes volume structure area 410, FE (metadata file) 441, metadata file 440, data file (File-a) 460, real-time file (AV-File) 470, FE (metadata mirror file) 451, volume Structure area 411 and metadata mirror file 450. The arrangement of these files is not limited to this order. Any order is fine as long as it conforms to the UDF specification.

The area excluding the volume structure areas 410 and 411 corresponds to the physical partition 420 defined in the UDF specification of version 2.5 or the like.

Physical partition 420 includes metadata partitions 430 and 431 .

In the UDF specification of version 2.5, all information on the file structure such as FE and directory files recorded in the volume space is provided in the metadata partition.

The metadata partition is managed by metadata files.

In the example shown in FIG. 9A, the metadata file 440 as file management information includes a file group descriptor 433, FE (ROOT) 442, FE (Dir-A) 443, FE (AV-Dir) 444, FE (File -a) 445, and FE (AV-File) 445.

The metadata mirror file 450 is the duplicate data of the metadata file 440 (that is, the metadata mirror file 450 has the same data as the metadata file 440). The metadata file 440 and the metadata mirror file 450 are preferably organized separately from each other so as not to destroy the file management information due to some reason (such as scratches on the information recording medium, etc.).

Hereinafter, for simplicity, it is assumed that a catalog file is included in each FE.

The recording locations and volumes of the metadata file 440 and the metadata mirror file 450 in the physical partition 420 are managed by FE (metadata file) 441 and FE (metadata mirror file) 451 .

A data file (File-a) 460 and a real-time file (AV-File) 470 are allocated in the physical partition 420 .

In particular, a real-time file (AV-File) 470 is allocated in a contiguous area having a predetermined size of the physical partition 420 so that the data of the real-time file can be reproduced without any interruption.

Given this directory hierarchy, the data in metadata file 440 may be organized as shown in Figure 9B.

Specifically, the directory (Dir-A) and the data file (File-a) under this directory are sequentially allocated. Thereafter, the directories (AV-Dir) and data files (AV-File) under the directory are sequentially allocated.

Configuration of such directories/files makes it possible to efficiently access data in specific applications. For example. In certain applications such as television program recording, the directory tree used to record data is first determined, and then any files and any directories under that directory among adjacent data are determined.

In the data structure of image data, each of FE (metadata file) and metadata file may be located at the leading position of the ECC block. In this case, padding data (for example, data of all zeros) is recorded between the FE (metadata file) and the metadata file.

Likewise, padding data (for example, all-zero data) may be recorded between FE (metadata mirror file) and metadata mirror file.

In the example shown in FIG. 9A , volume structure area 410 and physical partition 420 are recorded in volume space 109 .

The image data 500 is created on the disk device 304 or the like. Then, it is sequentially recorded into the volume space 109 from the beginning.

Next, an index relationship between data in the volume structure and data in the file structure when a metadata data file is used will be described with reference to FIG. 10 .

In the volume structure and file structure defined by the UDF specification, the anchor volume descriptor pointer 600 (hereinafter referred to as AVDP 600) is considered as the starting point.

By reading the AVDP 600 recorded at a predetermined position on the information recording medium 100, the recording position of the volume structure area 410 can be detected.

The volume structure area 410 includes a logical volume descriptor 601 . The recording position of the file group descriptor 433 in the metadata partition 430 can be detected from the logical volume descriptor 601 .

Logical Volume Descriptor 601 includes Partition Map (Type 2 ) 602 . The recording position of FE (metadata) 441 and the recording position of FE (metadata mirror file) 451 can be detected from the partition map (type 2) 602 .

Metadata file 440 is also a file managed by FE. From the FE (metadata file) 441, the recording location of the metadata file 440 in the physical partition 420, that is, the recording location of the metadata partition 430, can be detected.

In this case, the file structure is sequentially searched from the ROOT directory using information indicating the recording position of the above-mentioned file group descriptor 433 . As a result, it is possible to access the data file (File-a) 460, for example.

A copy of metadata file 440 is recorded in metadata mirror file 450 . Therefore, the data file (File-a) 460 can also be read using the metadata mirror file 450 .

FIG. 11A shows an example of the data structure and data arrangement of the volume structure area 410 . The volume structure area 410 includes a logical volume descriptor 601 and an anchor volume descriptor pointer 600 .

Logical volume descriptor 601 includes partition map (type 1 ) 1200 , metadata file location 1201 , metadata mirror file location 1202 and flag 1203 .

Partition map (type 1) 1200 is information for managing physical partitions.

The metadata file location 1201 is information indicating a location in the physical partition of the FE (metadata file) 441 .

The metadata mirror file position 1202 is information indicating a position in the physical partition of the FE (metadata mirror file) 451 .

Flag 1203 includes, for example, information indicating whether or not metadata mirror file 450 is present on information recording medium 100 . The metadata image file 450 is an optional function of the UDF specification.

FIG. 11B shows an example of the data structure and data arrangement of the volume structure area 411 .

In the volume structure area 411 , information similar to that recorded in the volume structure area 410 is recorded. In the volume structure area 411, second and third anchor volume descriptor pointers are recorded.

In each of the above data structures, dummy data (for example, 00h) can be selectively allocated so that the delimiter for data positioning can correspond to the boundary between ECC blocks. For example, the Anchor Volume Descriptor Pointer, Main Volume Descriptor, Logical Volume Descriptor 601, and Logical Volume Integrity Descriptor, each of which can be allocated from the leading position of the ECC block.

Next, the process of recording image data 500 in the state of FIG. 8A will be described with reference to the flowchart shown in FIG. 12 .

Here, it is assumed that the image data 500 is created on the magnetic disk device 304 and it is recorded in the information recording medium 100 .

Before recording the image data 500 , the system control section 301 and the drive control section 311 read out data necessary for data recording/reproduction from the disk management information area of the information recording medium 100 . When recording of the image data 500 is started, the system control section 301 sequentially reads the image data 500 from the magnetic head of the magnetic disk device 304, and transfers it to the storage circuit 302 (step S101).

Next, the system control section 301 instructs the drive device 310 to record the image data 500 (step S102). In this case, the image data 500 is recorded in an unrecorded continuous area of the information recording medium 100 according to the disk management information.

In the state shown in FIG. 8A, the entire volume space 109 is in an unrecorded state. In this case, the image data 500 is recorded in the volume space 109 from the beginning of the volume space 109 .

Assume that data recording is performed without verification processing. When performing verification processing, it is necessary to reproduce the data by accessing the data immediately after recording the data.

When performing inspection processing, the time required to record the entire image data 500 increases significantly. Therefore, verification processing is not performed in this step.

After the image data 500 is completely recorded, the process proceeds to the next step.

In order to reflect the recording result of the image data 500, the disc management information is updated (step S103). For example, the latest recorded address information 1107 is updated.

The unrecorded area differs depending on the recording of the image data 500 . Update the session management information 200 and/or the space bitmap management information 220 to the latest state.

For example, when an unrecorded area is managed using the session management information 200, the latest data recording position information 213 in the track management information 210 corresponding to the track where the image data 500 is recorded is updated.

As a result of the recording process described above, the information recording medium 100 has the data structure shown in FIG. 13 . The image data 500 is recorded in a continuous area of the volume space 109, which is unrecorded in FIG. 8A.

Restoration processing performed on recorded data after the above-described image data recording process will be described with reference to FIGS. 14 and 15 .

The system control section 301 prepares for data restoration (step S201). For example, the system control section 301 and the drive control section 311 read out data necessary for data recording/reproduction from the disk management information area or the like of the information recording medium 100 .

In addition, image data 500 on the magnetic disk device 304 and data recorded on the information recording medium 100 are prepared for reproduction.

Next, the system control section 301 instructs the drive device 310 to reproduce data of a predetermined size from the beginning of the image data 500 recorded on the information recording medium 100 (step S202). Here, the predetermined size is one unit of sector or one ECC block. Optionally, the predetermined size is a unit of an integer number of sectors or an ECC block.

In particular, it is preferable that the predetermined size is equal to the data rewriting unit of the information recording medium 100 or an integer multiple of the data rewriting unit.

This reproduced data is transferred to the storage circuit 302 .

Next, the system control section 301 compares the reproduced data in the storage circuit 302 with at least a part of the image data 500 (step S203). For example, when the image data 500 is stored in the magnetic disk device 304, a part of the image data 500 corresponding to the reproduced data is transferred from the magnetic disk device 304 to the storage circuit 302, and then on the storage circuit 302, the reproduced data and the data corresponding to the reproduced A comparison between the image data 500 and the portion of the data.

Such comparisons may also be performed outside of storage circuit 302 (eg, storage circuit 312).

As a result of the comparison, it is determined whether the reproduced data matches the partial image data 500 corresponding to the reproduced data (step S204).

When the reproduced data matches the partial image data 500 corresponding to the reproduced data, the procedure proceeds to step S206. Otherwise, the program proceeds to step S205.

When the reproduced data does not match the part of the image data 500 corresponding to the reproduced data, the system control part 301 judges that the recording of the image data 500 has an error, detects an area where an error occurs in the recording of the image data 500 as an error area, and keeps indicating an error The data location information (for example, logical address) recorded in the area is used as a part of the repair information (step S205). The repair information may be stored, for example, in storage circuit 302 (or in disk device 304).

In the example shown in FIG. 15, each of error areas 510, 511, and 512 is an area in which an error occurred in the image data 500 recording. Information indicating the respective positions of the error areas may be included in the repair information.

A case where an error occurs in data reproduction itself, that is, a reproduction error that occurs for some reason, is handled in a manner similar to a case where reproduced data does not match the partial image data 500 corresponding to the reproduced data.

After the processing of step S205 is completed, the procedure proceeds to step S206.

It is determined whether the data reproduction/comparison reaches the end of the image data 500 (step S206).

If the data reproduction/comparison has not reached the end of the image data 500, the process returns to step S202, and reproduction and comparison of the next data is continued.

If the data reproduction/comparison has reached the end of the image data 500, repair recording is performed on the data for which a recording error occurred (step S207). The repair record includes recording repair data in the replacement cluster, and recording replacement information that maps the data recorded in the error area to the repair data recorded in the replacement sector.

The system control part 301 extracts the part corresponding to the data recorded in the error area as the repair data from the image data 500, and instructs the drive device 310 to record the repair data in the replacement sector on the information recording medium 100 (for example, in the spare area 106 or spare area 107). For example, the instruction is transmitted using a predetermined command for repairing the record.

In the example shown in FIG. 15 , from image data 500 , a portion corresponding to data recorded in an error area 510 is extracted as repair data 520 , and the repair data 520 is recorded in the information recording medium 100 .

Likewise, repair data 521 for the error area 511 is recorded in the information recording medium 100 , and repair data 522 for the error area 512 is recorded in the information recording medium 100 .

In this case, it is preferable to record repair data for the error area in a replacement sector closer to the error area. This is because access time during data recording/reproduction can be reduced.

Next, the system control section 301 generates replacement information 1010 that links information (for example, a physical address) representing a position of data recorded in an error area with information (for example, a physical address) representing a recording position of repair data, And the generated replacement information 1010 is mapped to the replacement management information list 1000 . The replacement management information list 1000 is held in a storage circuit such as the storage circuit 302 .

The system control section 301 instructs the drive device 310 to record a new replacement management information list 1000 in the disk management information area 104 gradually. As a result, disk management information including the new replacement management information list 1000 is gradually recorded in the disk management information area 104 by means of the drive device 310 .

Alternatively, the system control section 301 may output a replacement information update instruction to the drive device 310 . The replacement information update command may include information indicating the location of data recorded in the error area and information indicating the location of repair data recorded in a predetermined format (for example, a logical address).

When the drive device 310 receives the replacement information update instruction, the drive device 310 translates the logical address included in the replacement information update instruction into a physical address, thereby generating new replacement management information 1010, and adding the new replacement management information 1010 to the replacement management information list 1000.

Then, the disk management information including the replacement management information 1010 is incrementally recorded in the disk management information area 104 by the drive device 310 .

According to the above structure, the same effect can be obtained by updating the data recorded in the error area to repair data using pseudo-overwriting. Replacement management information 1010 is generated as update information indicating an update status. Replacement management information 1010 includes original location information 1012 and replacement location information 1013 . Information indicating the position of data recorded in the error area is set as original position information 1012 . Information indicating the recording position of repair data is set as replacement position information 1013 . The generated replacement management information 1010 is recorded in the information recording medium 100 .

In the reproduction process described below, by referring to the replacement management information 1010, the data recorded in the error area is not reproduced, and the repair data is reproduced. Thus, using a replacement mechanism including replacement information and a replacement sector, it is possible to repair information recorded in an area where a recording error occurred.

The file reproduction process after the above-described file recording process will be described with reference to FIG. 16 . Here, the operation of reproducing the data file (File-a) 460 will be explained.

The system control section 301 instructs the drive device 310 to reproduce the AVDP 600 recorded on a predetermined location (for example, logical address=256) of the information recording medium 100 (step S301).

Next, the system control section 301 obtains the position information of the volume structure 410 from the AVDP 600, and instructs the drive device 310 to reproduce the volume structure 410 (step S302).

The system control section 301 obtains location information of an FE (metadata file) 441 from the volume structure 410 .

Next, the system control section 301 reproduces the file structure (step S303). In order to reproduce the file structure, the system control section 301 instructs the drive device 310 to reproduce the data based on the obtained location information of the FE (metadata file) 441 .

Thereafter, the recording position and the like of the data file (File-a) 460 are obtained from the reproduced file structure, and the data file (File-a) 460 is reproduced (step S304).

The reproduction instruction from the system control section 301 to the drive device 310 indicates at least position information indicating a position where data is to be read out. The location information is represented by a logical address. When the drive device 310 receives a reproduction instruction, the drive device 310 translates the logical address specified in the reproduction instruction into a physical address. Then, the drive device 310 refers to the replacement management information list 1000 , searches the replacement management information 1010 holding the physical address, and uses it as the original position information 1012 .

When the replacement management information 1010 corresponding to the logical address specified in the reproduction instruction is found in the replacement management information list 100, the replacement position information 1013 included in the found replacement management information 1010 is obtained. As a result, the physical address where the data is actually recorded is obtained so that the physical address can correspond to the logical address specified in the reproduction instruction. Then, the data at the physical address is reproduced. The reproduced data is output to the system control section 301 .

Specifically, for example, when a reproduction instruction is given for the logical address of error area 510 shown in FIG.

The repair data 520 is reproduced and output to the system control section 301 .

A similar process is applied to other error areas.

According to the above structure, it is possible to repair the information recorded in the area where the recording error occurred using the replacement mechanism including the replacement information and the replacement sector.

In addition, the number of times of accessing data can be reduced compared to continuously performing verification processing when image data is recorded.

As a result, it is possible to record image data at high speed and with high reliability.

Furthermore, it is possible to reproduce data without being aware of data repair on the logical space.

(Example 2)

Restoration processing different from Embodiment 1 will be described.

Restoration processing with respect to the state of FIG. 13 will be described with reference to FIGS. 17 and 18 .

FIG. 18 is a diagram illustrating a data structure after a repair process according to an embodiment of the present invention.

The system control section 301 prepares for data restoration (step S401). Here, the processing is similar to that of step S201.

Furthermore, the system control section 301 analyzes the file structure included in the image data 500 . Based on the analysis results, the following processing is performed in each file unit included in this image data 500 .

It is determined whether the file to be processed is a real-time file (step S402). This determination can be done, for example, by referring to the document type defined in the UDF specification.

For example, when the data file (File-a) 460 is not a real-time file, the procedure proceeds to step S403.

In this case, the system control section 301 instructs the drive device 310 to perform reproduction and comparison of files (step S403). More specifically, in this step, each step of reproduction and comparison depicted in FIG. 14 is performed with respect to the entire image data 500 .

The detected error areas (for example, 510, 511, 513, etc.) are registered in the repair information.

For example, when the data file (AV-File) 480 is a real-time file, the procedure proceeds to step S404.

In this case, the system control section 301 instructs the drive device 310 to perform reproduction and comparison of files (step S404). More specifically, in this step, each step of reproduction and comparison depicted in FIG. 14 is performed with respect to the entire image data 500 .

The detected error area (for example, 512) is registered in the repair information.

In both steps S403 and S404, the error area is registered in the repair information. In this case, it is assumed that information indicating whether the erroneous area to be registered is included in the real-time file is held in the repair information. In the following, this information is referred to as the error field type.

In or after step S403, it is determined whether a file remains in the image data 500 (step S405). If there is a file reserved, the procedure returns to step S402 in order to process the reserved file.

If it is determined in step S405 that all files have been processed, the process proceeds to step S406.

Thereafter, repair of the data record is performed (step S406). In step S406, processing similar to that in step S207 is performed.

The following processing is different from that of step S207. Specifically, the error area type is referred to in the repair information, and if the error area is included in the real-time file, repair data is not recorded in the replacement sector.

If the error area is not included in the real-time file, a process similar to step S207 is performed.

Thereafter, the disk management information is updated (step S407). In step S407, processing similar to step S208 is performed.

The following processing is different from the processing of step S208. Specifically, the error area type is referred to in the repair information, and if the error area is included in the real-time file, regarding the newly generated replacement management information 1010, information valid only for the original position information 1012 is stored, and the replacement position information 1013 is rendered invalid .

If the error area is not included in the real-time file, then proceed with processing similar to step S208.

In the flowchart of FIG. 17, repair processing is performed within a file unit, therefore, repair of the volume structure area 410 and the like is not excluded. For data other than these files, the repair process depicted in FIG. 14 of Embodiment 1 can be performed.

According to the above structure, it is possible to repair the information recorded in the area where the recording error occurred using the replacement mechanism including the replacement information and the replacement sector.

Whether or not a file is a real-time file is determined on a file-by-file basis. When the file is not a real-time file, repair data is recorded in the replacement sector in a similar manner to Embodiment 1. When the file is a live file, repair data is not recorded in the replacement sector. Thus, no access operation is performed during reproduction of the real-time file, so that data reproduction is not interrupted.

Live files and other files are preferably recorded in different ECC blocks. In this case, when repair recording is performed on an area that is not a live file, it is possible to prevent the area of the live file from being subjected to repair recording.

On the other hand, an error area including a real-time file is registered in the replacement management information list 1000 . Therefore, an erroneous area can be detected before real-time file reproduction. Therefore, for example, reproduction can be performed avoiding this area, thereby improving the reliability of the system.

Because the data of the real-time file itself is not repaired, the entire step S404 can be omitted to reduce the processing time of the repair process.

In the above-described embodiments, whether a file is a real-time file can be determined by referring to a file type defined in, for example, the UDF specification. Alternatively, tracks may be allocated independently to the area where the real-time file is recorded and to other areas.

(Example 3)

In this embodiment, a method for recording image data including AV data in particular, and repairing an error in recording using pseudo-overwrite recording will be described. Conventionally, there has been a problem that, when recording is performed using image data, if an error occurs while recording data, it is impossible to repair it. This embodiment can solve such a problem.

19A and 19B illustrate the data structure on the information recording medium 100 at the moment before recording image data according to the present embodiment. As shown in FIG. 19A, there is a lead-in area 101 including a disk management information area 104, and a lead-out area 103 including a disk management information area 105. In the volume space 109, no data has been recorded yet.

The following describes the process of bringing the recorded image data 2000 including files and the directory tree structure shown in FIG. 19B to such a state and a data structure. As shown in Figure 19B, be the data file (File-e) of common data file, the directory (Dir-E) of its parent catalogue, comprise the real-time file (AV-File) of the AV data of scheme coding by MPEG etc., directory (AV-Dir) of its parent directory.

FIG. 20 shows the data structure of image data 2000 . Image data 2000 is a file obtained by combining the directory tree shown in FIG. 19B and file management information for managing the directory tree into one file.

Image data 2000 includes volume structure area 410, FE (metadata file) 441, metadata file 440, data file (File-e) 2004, real-time file (AV-File) 2005, FE (metadata mirror file) 451, volume Structure area 411 and metadata mirror file 450. The arrangement of files is not limited to this order. Any order is fine as long as it conforms to the UDF specification.

The same data structures as those of the image data 500 described above are denoted by the same reference numerals.

Areas other than the volume structure areas 410 and 411 are areas corresponding to the physical partition 420 defined with the version 2.5 UDF specification or the like. Further, the physical partition 420 includes metadata partitions 430 and 431 . As mentioned above, the metadata partition contains file management information.

Specifically, in the example shown in FIG. 20, the file group descriptor 433, FE (ROOT) 442, FE (Dir-E) 2001, FE (AV-Dir) 2002, FE (File-e) 2002, and FE (AV-File) 2003 is included in the metadata file 440 . Metadata mirror file 450 has the same data as metadata file 440 .

In the following description, for simplicity of description, the directory file is included in FE.

The recording positions and sizes of the metadata file 440 and the metadata mirror file 450 in the physical partition 420 are managed by FE (metadata file) 441 and FE (metadata mirror file) 451 respectively.

On the other hand, a data file (File-e) 2004 and a real-time file (AV-File) 2005 are allocated in the physical partition 420 .

In particular, a real-time file (AV-File) 2005 is allocated in a continuous area satisfying a predetermined condition in the physical partition 420 so that data can be reproduced without any interruption.

Such image data 2000 is formed in advance on the magnetic disk device 304 or the like, and is then sequentially recorded in the volume space 109 from the beginning.

Next, the process of recording image data 2000 in the state of FIG. 19A will be described with reference to the flowchart shown in FIG. 21 .

Here, it is assumed that the image data 2000 is created on the magnetic disk device 304 and it is recorded in the information recording medium 100 .

Before recording the image data 2000, the system control section 301 and the drive control section 3.11 read data necessary for data recording/reproduction from the disk management information area of the information recording medium 100 (step S2001).

Then, recording of the image data 2000 is started (step S2002). The system control section 301 sequentially reads the image data 2000 from the head of the magnetic disk device 304 and transfers it to the storage circuit 302 .

The system control section 301 instructs the drive device 310 to record the image data 2000 . In this case, the image data 2000 is recorded in the unrecorded continuous area of the information recording medium 100 according to the disk management information.

In the state shown in FIG. 19A, the entire volume space 109 is in an unrecorded state. In this case, the image data 2000 is recorded in the volume space 109 from the beginning of the volume space 109 .

Assume that data recording is performed without verification processing. After recording all the image data 2000, the procedure proceeds to the next step.

Next, the disk management information 13 is updated (step S2003). Such processing is performed to reflect the result of recording the image data 2000 .

For example, the latest recorded address information 1107 is updated. Further, since the unrecorded area is changed according to the recording of the image data 2000, the session management information 200 and/or the space bitmap management information 220 are updated to the latest state.

For example, when an unrecorded area is managed using the session management information 200 , the latest data recording position information 213 in the track management information 210 corresponding to the track recorded in the image data 500 is updated.

As a result of the recording process, the data structure on the information recording medium 100 becomes that shown in FIG. 22 . In FIG. 19A, image data 2000 is continuously recorded in the volume space 109 which remains unrecorded.

After the recording process of the image data is completed, repair processing for the recorded data is performed. Repair processing for recorded data will be described with reference to FIGS. 23 and 25A.

The system control section 301 prepares for data restoration (step S2101). For example, the system control section 301 and the drive control section 311 read out data necessary for data recording/reproduction from the disk management information area or the like of the information recording medium 100 .

In addition, image data 2000 on the magnetic disk device 304 and data recorded on the information recording medium 100 are prepared for reproduction.

Next, the system control section 301 instructs the drive device 310 to reproduce data having a predetermined size from the leading position of the image data 2000 recorded on the information recording medium 100 (step S2102). Here, the predetermined size is expressed as a unit of a sector or a unit of an ECC block. Alternatively, the predetermined size is represented as an integer multiple unit of a sector or an ECC block.

In particular, it is preferable that the predetermined size is equal to the data rewriting unit of the information recording medium 100 or an integer multiple of the data rewriting unit.

This reproduced data is transferred to the storage circuit 302 .

Next, the system control section 301 compares the reproduced data in the storage circuit 302 with at least a part of the image data 2000 (step S2103). For example, when the image data 2000 is stored in the disk device 304, a part of the image data 2000 corresponding to the reproduced data is transferred from the disk device 304 to the storage circuit 302, and then on the storage circuit 302, the reproduced data and the data corresponding to the reproduced The portion of the data in the image data 2000 is compared.

Such comparisons may also be performed outside of storage circuit 302 (eg, storage circuit 312).

As a result of the comparison, it is determined whether the reproduced data matches the partial image data 2000 corresponding to the reproduced data (step S2104).

When the reproduced data matches the partial image data 2000 corresponding to the reproduced data, the procedure proceeds to step S2106. Otherwise, the program proceeds to step S2015.

When the reproduced data does not match the part of the image data 2000 corresponding to the reproduced data, the system control section 301 determines that an error occurs in the recording of the image data 2000, detects an area where an error occurs in the recording of the image data 2000 as an error area, and maintains the area indicated in The information (for example, logical address) of the data recording location in the error area is used as a part of the repair information (step S2105). Repair information may be stored, for example, in storage circuit 302 (or disk device 304).

In the example shown in FIG. 25A, each of error areas 2101, 2102 is an area where data recording of image data has an error. Information indicating the respective locations of the error areas may be included in the repair information.

A case where an error occurs in data reproduction itself, that is, a reproduction error that occurs for some reason, is handled in a similar manner to a case where the reproduced data and the partial image data 2000 corresponding to the reproduced data do not match.

When the processing of step S2015 is completed, the processing proceeds to step S2106.

It is determined whether the data reproduction/comparison reaches the end of the image data (step S2106).

If the data reproduction/comparison has not reached the end of the image data 2000, the process returns to step S2102, and reproduction and comparison of the next data is continued.

If the data reproduction/comparison has reached the end of the image data 2000, repair recording of data where a recording error occurred is performed (step S2107).

The selection of this step depends on the type of error area. The processing of this step will be described in more detail below with reference to FIG. 24 .

By referring to the information indicating the erroneous area, which is stored as repair information, it is determined whether the erroneous area is included in the range of the real-time file (step S2201).

The determination can be made, for example, by checking the archive entry (FE) in the file structure. This is because each FE holds information about the location and extent size of each file within the partition space. Further, by referring to the file type defined in the UDF specification, it is possible to determine whether each file is a real-time file.

For example, the error area S2101 is an area not included in any range of any real-time file. In this case, the process proceeds to step S2202. On the other hand, the error area S2102 is an area included in the real-time file range. In this case, the process proceeds to step S2204. Otherwise, the process proceeds to step S2202.

Repair data corresponding to the erroneous area (ie, data representing the correct content of the erroneous area) is recorded in the replacement cluster (eg, spare area 106 or spare area 107) (step S2202). Data corresponding to the erroneous data is read out from the corresponding position of the image data 2000, and the read data is recorded in the spare area as repair data. For example, in FIG. 25A, repair data 2201 for an error area 2101 is recorded.

These processing steps are executed by the system control section 301 sending a predetermined command for repairing the recording to the drive device 310, for example.

It is desirable to record the repair data corresponding to the erroneous data at the position of the replacement cluster close to the erroneous area. This makes it possible to reduce the access time required for data recording/reproduction

The system control section 301 generates related information and holds the related information in a memory such as the storage circuit 302 or the storage circuit 312 (step S2203). This correlation information is information for correlating the position information of the error area and the recording position of the repair data in the spare area.

Re-record the real-time file (step S2204). In this case, as described above, in order to reproduce a real-time file without any interruption (ie, to perform seamless reproduction), it is necessary to locate the real-time file in a physically continuous area satisfying a predetermined criterion.

However, when an erroneous area is included in a real-time file, there is a possibility of interrupting the reproduction of the real-time file due to the suspension of supply of data from the erroneous area.

In this step, an area including an error area on the real-time file is detected. The area including the erroneous area may cause interruption of real-time file reproduction. Specifically, in FIG. 25A, an area corresponding to an error area of range #2 (the range #2 included in the real-time file (AV-File) 2005) is included.

The data corresponding to the range #2 is read out from the image data 2000, and the read data is recorded in the unrecorded area of the volume space 109 as the range #2a (data including the correct content of the range #2).

The length of range #2a is determined to satisfy predetermined criteria. A predetermined criterion is used to reproduce the repaired real-time file (AV-File) 2005 including range #2a without any interruption.

In this example, there is only one error field in the live file. However, there may be multiple error areas in the live file. In this case, similar processing is applicable. As described above, when re-recording the range, the length of each range is determined so that reproduction of the range can be performed without any interruption.

Next, the file structure is updated to reflect the re-recording of the range (step S2205). In step S2204, the range of the real-time file (AV-File) 2005 is changed. The file structure should be updated to reflect this change. In this example, FE for managing real-time files (AV-files) 2005 needs to be updated. For example, the file structure can be updated by updating the metadata file.

In the example shown in FIG. 25A , a metadata file 2300 as an update to the metadata file 440 is recorded in an unrecorded area of the volume space 109 . Further, FE (metadata file) 2301 for managing this metadata file 2300 is recorded.

Update the volume structure (step S2206). In step S2205, the file structure is updated. By pseudo-rewriting the volume structure, the volume structure related to the file structure is updated to the latest information.

Specifically, in FIG. 25A, volume structures corresponding to volume structures 2302A and 2303A are updated to volume structures 2302B and 2303C.

Repair recording processing is executed for each error area included in the repair information. When this repair process is completed, the process returns to the process in FIG. 23 .

Update the disk management information (step S2108). This update process includes the following steps.

In the storage circuit 302 and the like, the system control section 301 generates new replacement management information 1010 from the relevant information obtained in step S2203.

For example, predetermined translation (for example, translation of a logical address into a physical address).

The generated replacement management information 1010 includes original location information 1012 and replacement location information 1013 . The location of data recorded in the error area is set as original location information 1012 . The position of the replacement cluster where repair data is recorded is set as replacement position information 1013 .

Further, a new replacement management information list 1000 including the generated replacement management information 1010 is generated. The replacement management information 1010 generated by pseudo-rewriting the volume structure in step S2206 is added to the new replacement management information list 1000 .

The system control section 301 instructs the drive device 310 to record the generated replacement management information list 1000 . The drive device 310 gradually records a new replacement management information list 1000 in the disk management information area 104 .

The system control section 301 may generate a replacement information update instruction including information indicating the position of data recorded in the error area and indicating the location of data recorded in a predetermined format (for example, logical address) from the relevant information obtained in step S2203. information of the repair data location, and output a replacement information update command to the drive device 310 .

When the drive device 310 receives the replacement information update command, the drive device 310 generates the replacement management information 1010 by converting the logical address included in the replacement information update command into a physical address, and adds the generated replacement management information 1010 to the replacement management The replacement management information list 1000 is recorded in the information list 1000 and gradually in the disk management information area 104 .

In step S2205, the file structure is updated to the latest information by pseudo-rewriting the volume structure in order to reflect the re-recording of the range. However, pseudo-rewriting may also be performed on parts other than the volume structure in this file structure (for example, FE (metadata file)). For example, as shown in FIG. 25B, it is possible to pseudo-rewrite FE (metadata file) 441 by means of FE (metadata file) 2301B.

Alternatively, it is possible to pseudo-rewrite the FE of a live file that has been repaired.

The above repair operation is equivalent to updating the data recorded in the error area to repair data. The replacement management information 1010 and the file structure after update are recorded in the information recording medium 100 as update information to reflect the update status of the file system. The replacement management information 1010 is such that the file structure before updating (for example, volume structure 2302A, FE (metadata file) 441, etc.) )Interrelated. The file structure before updating is the first address information indicating the position of data recorded in the error area. The updated file structure is the second address information indicating the recording location of the repair data.

In the playback processing described below, the updated file structure is played back by referring to the replacement management information 1010 . Thus, the data recorded in the error area is not reproduced, and the repair data is reproduced. Thus, using a replacement mechanism including replacement information and a replacement sector, it is possible to repair information in an area where a recording error occurred.

After the processing of recording such a file is completed, processing for reproducing the file is performed. Referring to the flowchart shown in Fig. 26, the processing for reproducing the file will be described. Here, the operation of reproducing the data file (File-e) 2004 will be described as a typical reproducing operation.

The system control section 301 instructs the drive device 310 to reproduce the AVDP 600 recorded on a predetermined location (for example, logical address=256) in the information recording medium 100 (step S2301).

Next, the system control section 301 obtains the position information of the volume structure 410 from the AVDP 600, and instructs the drive device 310 to reproduce the volume structure 410 (step S2302).

When receiving the instruction, the drive device 310 refers to the replacement management information list 1000 and retrieves the replacement management information 1010 holding the location information of the logical volume descriptor 601 as the original location information 1012 . When the drive device 310 retrieves the replacement management information 1010, the replacement position information 1013 included in the replacement management information 1010 is obtained. Finally, the location information of the volume structure 2302B is obtained. The drive device 310 reproduces the volume structure 2302B, and returns it to the system control section 301 . Based on the received volume structure 2302B, the system control section 301 obtains the location information of the FE (metadata file) 2301 from the partition map (type 2) included in the volume structure 2302.

Next, the system control section 301 reproduces the file structure (step S2303). In order to reproduce the file structure, the system control section 301 instructs the drive device 310 to reproduce the FE (metadata file) 2301 based on the obtained position information of the FE (metadata file) 2301 .

The location information of the metadata file 2300 is obtained from the reproduced FE (metadata file) 2301 . Thus, it is possible to access the metadata file 2300 included in the latest file management information.

The recording position of the data file (File-e) 2004 is obtained from the reproduced file structure, and the data file (File-e) 2004 is reproduced (step S2304). In order to reproduce the data file (File-e) 2004, the system control section 301 outputs a reproduction instruction to the drive device 310. In the reproduction command, the location information of the data file (File-e) 2004 is indicated by a logical address. When receiving a reproduction instruction, the drive device 310 translates the logical address into a physical address. The drive device 310 refers to the replacement management information list 1000 and retrieves the replacement management information 1010 holding the physical address as the original position information 1012 .

When the drive device 310 retrieves the replacement management information 1010, the replacement position information 1013 included in the replacement management information 1010 is obtained. Thus, the physical address corresponding to the logical address in the reproduction command is acquired. The drive device 310 reproduces the data located at the physical address, and returns it to the system control section 301 .

In the example shown in FIG. 25A , when a reproduction command including the logical address of error area 2101 is output to drive device 310 , drive device 310 retrieves replacement management information list 1000 and obtains the physical address of repair data 2201 .

The drive device 310 reproduces the repair data, and returns it to the system control section 301 .

Similar processing applies to other error areas.

On the other hand, in the reproduction of the real-time file (AV-File) 2005, the range included in the file entry can be reproduced step by step. This is because, as explained with reference to FIG. 23, in repairing the range including real-time data, the range is re-recorded without using the replacement mechanism, and the file structure is updated by pseudo-rewriting.

According to the above processing, in the recording of the image data 2000, it is possible to restore information in an area where an error occurs in recording (error area) using a replacement mechanism including replacement information and a replacement sector.

If a replacement mechanism is used for a real-time file, AV data is allocated at discontinuous positions so that the AV data cannot be reproduced without any interruption. According to this embodiment of the present invention, by re-recording the range of the real-time file including the erroneous area in the user data area, it is possible to repair the data and satisfy the distribution standard of the AV data. Updates to the file structure required for repair processing are achieved by pseudo-rewriting the file structure.

The repair of the erroneous area in the real-time file is realized without using any spare area. Therefore, there is no need to allocate a large spare area. Therefore, it is possible to reduce the burden on implementation and effectively utilize the data area on the information recording medium.

By implementing the above-mentioned restoration function, it is possible to realize high reliability as a whole system even if information recording media are degraded in quality when they are manufactured. This provides a significant industrial advantage in that the manufacturing cost of the magnetic disk can be reduced.

In the logical space, as shown in FIGS. 25A and 25B , the structure of the file obtained after the restoration is completed is the same as that of the read-only file. Thus, it is possible to reproduce data recorded in a write-once recording medium even in a system for a read-only medium or a rewritable recording medium that cannot perform a reproduction operation.

In the recording process described above, repair recording is performed after recording all image data without performing any verification processing. When image data is recorded while performing verification processing, it is necessary to access the recorded data immediately after recording the data and reproduce the data recorded for each minimum unit (for example, a unit of ECC block) for data recording. Thus, when recording of image data is performed together with inspection processing, the time required to record the entire image data 2000 is greatly increased.

On the other hand, in the embodiment of the present invention, both recording and repairing of data are performed using continuous data access. Therefore, there is no need for any additional waiting time for access and control of the disk rotational speed by the head section 334, and it is possible to greatly reduce the processing time.

In the above-described embodiments of the invention, the system control section 301 instructs the drive device 310 to perform dummy rewriting. Such a command is generated by using a predetermined command (command) for performing dummy rewriting. Alternatively, the drive device 310 may detect rewriting of data when receiving a normal recording instruction, and may automatically perform dummy rewriting.

The present invention is not limited to the above-described embodiments. The present invention can also be used, for example, in an information recording medium (for example, a write-once optical disc, etc.) and a recording/reproducing device (for example, a television video recorder, a disk video camera, etc.).

While certain preferred embodiments have been described herein, such embodiments are not to be considered as limitations on the scope of the invention except as set forth in the appended claims. Various other modifications and equivalents which do not depart from the scope and spirit of the invention will be apparent to and can be readily made by those skilled in the art after reading the description herein. All patents, published patent applications, and publications cited herein are hereby incorporated by reference.

Claims (11)

1, a kind of recording unit that is used in the carrier recorded information comprises:

Be used for the device at the carrier recording image data, this view data comprises file structure and file;

Be used for reproducing the device of at least a portion of the view data that is recorded in this carrier;

Be used for to reproduce the device that data and a part of view data with respect to these reproductions data compare, so that Imagery Data Recording wrong zone occurs and detects the conduct zone of makeing mistakes therein;

Be used for from this view data, will come out as the device of repair data corresponding to the data extract that is recorded in the data in the zone of makeing mistakes;

Be used for device at carrier record repair data;

Being used for producing lastest imformation is the device of repair data with the Data Update that will be recorded in the zone of makeing mistakes; And

Be used for device in this carrier record lastest imformation.

2, according to the recording unit of claim 1, wherein be used to produce the device generation lastest imformation of lastest imformation, so that lastest imformation comprises displacement management information, it is interrelated with the information of record position of this repair data of expression that this displacement management information is recorded in expression the information of record position of the data in the zone of makeing mistakes.

3,, wherein the reproduction data of each file in this view data and that part of view data corresponding to these reproduction data are compared according to the recording unit of claim 2.

4, according to the recording unit of claim 3, also comprise:

Be used for determining whether the file of view data is the device of real-time files,

Wherein when definite this document is not any real-time files, this repair data is recorded in this carrier.

5, according to the recording unit of claim 1, also comprise:

The data in being recorded in this zone of makeing mistakes are used to determine to comprise the device of length of the scope of a part of real time data, so that when comprising a part of real time data, can be reproduced real time data continuously; With

Be used for and will extract device from view data corresponding to the data of this scope as repair data,

Wherein this device that is used to produce lastest imformation produces lastest imformation so that this lastest imformation comprises displacement management information, and it is interrelated with second address and second address information of the record position of this repair data of expression that this information makes expression be recorded in first address of the Data Position in the zone of makeing mistakes.

6, the main process equipment in a kind of recording unit that is used in recorded information in carrier,

This main process equipment comprises the systems control division branch,

Wherein this systems control division branch is provided with controlling and driving equipment, and this driving arrangement comprises the recoding/reproduction part, and be used to carry out the recording operation of carrier or reproduce operation,

This systems control division branch comprises:

Be used for indicating this driving arrangement to comprise the device of the view data of file structure and file at the carrier record;

Be used for indicating this driving arrangement to be recorded in the view data of this carrier, thereby obtain to reproduce the device of data with reproduction at least a portion;

Be used for comparing with a part of view data, so that Imagery Data Recording wrong zone occurs and detects as the regional device of makeing mistakes therein corresponding to these reproductions data with reproducing data;

Be used for to come out as the device of repair data corresponding to the data extract that is recorded in the data this zone of makeing mistakes from this view data;

Be used for indicating this driving arrangement with device at carrier record repair data;

Being used for producing the Data Update that the zone writes down of will makeing mistakes is the device of the lastest imformation of repair data; And

Be used for indicating this driving arrangement with device in carrier record lastest imformation.

7, a kind of SIC (semiconductor integrated circuit) of using the recording unit that in carrier, is used for recorded information,

Wherein this SIC (semiconductor integrated circuit) setting is come controlling and driving equipment, and this driving arrangement comprises the recoding/reproduction part, and this part is used to carry out the recording operation of carrier or reproduces operation,

This SIC (semiconductor integrated circuit) comprises:

Be used for indicating this driving arrangement to comprise the device of the view data of file structure and file at the carrier record;

Be used for indicating this driving arrangement to be recorded in the view data of this carrier, thereby obtain to reproduce the device of data with reproduction at least a portion;

Be used for comparing with a part of view data, so that Imagery Data Recording wrong zone occurs and detects as the regional device of makeing mistakes therein corresponding to these reproductions data with reproducing data;

Be used for to come out as the device of repair data corresponding to the data extract that is recorded in the data this zone of makeing mistakes from this view data;

Be used for indicating this driving arrangement repair data to be recorded in the device of carrier;

Being used for producing the Data Update that the zone writes down of will makeing mistakes is the device of the lastest imformation of repair data; And

Be used for indicating this driving arrangement with device in carrier record lastest imformation.

8, a kind of recording method that is used in the carrier recorded information, this recording method may further comprise the steps:

Record comprises the view data of file structure and file in carrier;

Reproduction at least a portion is recorded in the view data in this carrier;

With these reproduction data with compare corresponding to a part of view data of these reproductions data so that detect the zone that mistake appears in Imagery Data Recording, with it as the zone of makeing mistakes;

From this view data, will come out as repair data corresponding to the data extract that is recorded in the data in this zone of makeing mistakes;

In carrier, write down repair data;

Producing lastest imformation is repair data with the Data Update that will be recorded in the zone of makeing mistakes; And

This lastest imformation of record in carrier.

9, a kind of method of in main process equipment, implementing, this main process equipment is used in the recording unit of recorded information in carrier, and this method may further comprise the steps:

The indication driving arrangement comprises the view data of file structure and file with record in carrier;

Indicate this driving arrangement to be recorded at least a portion of the view data in this carrier, thereby obtain to reproduce data with reproduction;

Compare with a part of view data reproducing data, so that Imagery Data Recording wrong zone occurs and detects the conduct zone of makeing mistakes therein corresponding to these reproductions data;

From this view data, will come out as repair data corresponding to the data extract that is recorded in the data in this zone of makeing mistakes;

Indicate this driving arrangement in carrier, to write down repair data;

The Data Update that generation is used for that the zone of makeing mistakes is write down is the lastest imformation of repair data; And

Indicate this driving arrangement in carrier, to write down lastest imformation.

10, a kind of program of in main process equipment, implementing, this main process equipment is used in the recording unit of recorded information in carrier, and this program may further comprise the steps:

The indication driving arrangement comprises the view data of file structure and file with record in carrier;

Indicate this driving arrangement to be recorded at least a portion of the view data in this carrier, thereby obtain to reproduce data with reproduction;

Compare with a part of view data reproducing data, so that Imagery Data Recording wrong zone occurs and detects the conduct zone of makeing mistakes therein corresponding to these reproductions data;

From this view data, will come out as repair data corresponding to the data extract that is recorded in the data in this zone of makeing mistakes;

Indicate this driving arrangement in carrier, to write down repair data;

The Data Update that generation is used for that the zone of makeing mistakes is write down is the lastest imformation of repair data; And

Indicate this driving arrangement in carrier, to write down lastest imformation.

11, a kind of carrier that records lastest imformation thereon,

Wherein lastest imformation is that expression is recorded in the information that data in the zone of makeing mistakes have been updated to repair data,

This zone of makeing mistakes is that wrong zone appears in a kind of wherein record image data, and

This repair data is by coming out to obtain corresponding to the data extract that is recorded in the data in the zone of makeing mistakes from view data.

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