JP2004038400A - Recording device, file management device, file management method, and file management program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording device, a file management device, a file management method, and a file management program for ensuring a plurality of recording areas for recording files according to an access speed to the recording medium on the recording medium, for monitoring the access situation to the file on the recording medium, and for managing and adjusting the recording position of the file with a meta data file in which the meta data of the file are recorded according to the access situation. <P>SOLUTION: A data processing part 3 is provided with a meta data preparing function for extracting meta data from a contents file, and for newly preparing a meta data file, a significance deciding function for deciding the significance of the contents file by referring to a significance decision reference table 11 according to an access time and access frequency recorded in the meta data file, and a recording position control function for instructing the change of the recording position of the contents file or the recording of the contents file in a plurality of parts to a control part 6 according to the significance recorded in the meta data file. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a recording device, a file management device, a file management method, and a file management program for monitoring the access status of a content file on a recording medium and managing a recording position where the content file is recorded according to the access status.
[0002]
Summary of the Invention
By recording information indicating the usage status of the content file as metadata as a data file different from the content file on the recording medium, and operating the content file using the data file, the access processing can be speeded up, And to improve the reliability of the recording apparatus.
[0003]
When recording a content file in a recording device, a metadata file is created using the access time, access frequency, and importance of the content file as metadata of the content file. The access status of the content file recorded in the recording device is monitored and recorded in a metadata file of the information. Judging that a content file that generates a lot of access processing is of high importance, move the content file to a recording area that can be accessed more quickly, or copy the content file to another recording area, thereby speeding up the access processing. And improving the reliability of the recording apparatus.
[0004]
The present invention includes a file management unit, a recording medium, and a control unit that performs management control of the recording medium. The file management unit has a data processing unit, a buffer memory, and an importance determination criterion table. The data processing unit has an importance determination function, a metadata creation function, and a recording position control function.
[0005]
[Prior art]
In a recording medium such as a magnetic disk or an optical disk, sections such as tracks and sectors are provided on the disk-shaped recording medium, and data is recorded in units of a sector or a cluster including a plurality of sectors.
[0006]
There are two types of this track configuration, and there are a case where the track is formed in a spiral shape and a case where the track is formed in a concentric shape. In the case of an optical disk, a spiral track is always traced at a constant speed. Therefore, the rotation speed of the disk is smoothly changed from the inner circumference of the disk to the outer circumference of the disk. This method is called a CLV (Constant Linear Velocity) method.
[0007]
When the tracks are formed concentrically, there are two more types depending on the configuration of the sector. One is called CAV (Constant Angular Velocity: constant angular velocity), and all tracks have the same number of sectors. Therefore, if the disk always rotates at a constant speed, the data transfer speed does not change between the inner circumference and the outer circumference.
[0008]
Another method, ZCAV (Zone Constant Angular Velocity), is divided into several sections from the inner circumference to the outer circumference of the disk, and the number of sectors is changed for each section. . Since the number of sectors increases as the track on the outer circumference increases, the storage capacity per round increases if the rotation speed is constant. Therefore, the data transfer speed increases as the track approaches the outer circumference.
[0009]
In a recent magnetic disk drive, a ZCAV system (Zone Constant Angular Velocity: constant angular angular velocity system) is generally used. As a technology using a high-speed access area formed by the ZCAV system, Japanese Patent Application Laid-Open No. 2002-55995 discloses a technology. An "information processing method and apparatus" is disclosed.
[0010]
This is a method of storing binary data and metadata associated therewith in a storage medium, in which a metadata storage area is reserved in advance on this storage medium, and stored from the beginning of the metadata storage area. A storage area for storing the metadata of the target file is allocated, the metadata is stored here, and the binary data of the storage target file is stored in a general area other than the metadata storage area. . Then, link information for associating the metadata and the binary data making up the storage target file is written in the metadata storage area in association with the metadata.
[0011]
[Problems to be solved by the invention]
However, even if such recording position control is performed, there is a problem that if the number of accesses to the same file increases, the reliability of the recording apparatus decreases. This is because the probability of failure increases as access to the same location on the recording medium is repeated.
[0012]
To improve reliability, a RAID device may be used. However, since redundant recording is performed on all files recorded in the recording device, the recording capacity is reduced.
[0013]
The present invention has been made in view of the above circumstances, and secures, on a recording medium, a plurality of recording areas for recording a file in accordance with the access speed to the recording medium, and further checks the access status of the file on the recording medium. To provide a recording device, a file management device, a file management method, and a file management program for monitoring and managing and adjusting a recording position of a file in accordance with an access state together with a metadata file in which metadata of the file is recorded. And
[0014]
[Means for Solving the Problems]
In order to achieve the above object, a recording device according to claim 1 is a recording device including a recording medium that records a content file and a metadata file in which metadata of the content file is recorded, A database that records the importance of the content file set according to the access frequency of the content file and the access time, a recording area for recording the metadata file on the recording medium, A plurality of recording areas for recording the content file, and a recording medium control unit for recording the metadata file and the content file in a designated recording area; and the metadata or the metadata of the content file. Acquire a data file and access the content file The metadata frequency, access time, and importance as the metadata, create the metadata file, and refer to the metadata creating unit that instructs the recording medium control unit to save the metadata file, and the database. Importance determining means for determining the importance of the content file based on the access frequency and the access time recorded in the metadata file; and recording the content file according to the importance. Recording position control means for determining an area and instructing the storage medium control means to store, move, or copy the content file.
[0015]
According to the first aspect of the invention, the importance is determined according to the access frequency and access time of the content file, and further, the recording area in which the content file is recorded is determined according to the importance, and the recording area is determined. Since the content file is saved, moved, or copied, the content file that is frequently accessed or the content file that is accessed for a long time is saved or moved to an area that can be accessed more quickly, so that the content file is saved. Since the access speed to access is increased, the access processing can be performed at high speed. Further, by copying a content file with high importance, the reliability of the recording apparatus can be improved.
[0016]
A recording apparatus according to a second aspect of the present invention is the recording apparatus according to the first aspect, wherein the recording position control means instructs copying of the content file, and the same content file is recorded in the recording apparatus. When a plurality of recording positions are recorded on a medium, the metadata creating unit records a plurality of recording positions in the metadata file.
[0017]
A recording device according to a third aspect of the present invention is the recording device according to the first or second aspect, wherein, upon receiving an access process to the content file recorded on the recording medium, An access control unit for acquiring the recording position recorded in a metadata file and designating an access position on the recording medium is provided.
[0018]
According to the third aspect of the present invention, the access to the content file is performed based on the storage position recorded in the metadata file. Therefore, when there are a plurality of the same content files, the content file to be accessed is Even if it is being used by another access process, by obtaining another storage position, it is possible to avoid collision of the access process.
[0019]
A file management device according to a fourth aspect of the present invention manages a content file and a metadata file in which metadata of the content file is recorded, and stores the metadata file and the content file in a recording medium. A file management device that controls a recording device that records on the specified recording area, and a database that records the importance of the content file set according to an access frequency of the content file and an access time. An area securing unit for instructing the recording apparatus to secure a recording area for recording the metadata file on the recording medium and a plurality of recording areas for recording the content file in accordance with an access speed; Get the metadata of the file or the metadata file Metadata generating means for recording the access frequency, access time, and importance of the content file as the metadata to create the metadata file, and instructing the recording device to save the metadata file; and the database With reference to the access frequency recorded in the metadata file, the importance determining means for determining the importance of the content file based on the access time, the content file according to the importance, Recording position control means for determining a recording area to be recorded and instructing the recording apparatus to save, move, or copy the content file.
[0020]
According to the invention of claim 4, the importance is determined according to the access frequency and access time of the content file, and further, the recording area where the content file is recorded is determined according to the importance, and the recording area is determined. Since the content file is saved, moved, or copied, the content file that is frequently accessed or the content file that is accessed for a long time is saved or moved to an area that can be accessed more quickly, so that the content file is saved. Since the access speed to access is increased, the access processing can be performed at high speed. Further, by copying a content file with high importance, the reliability of the recording apparatus can be improved.
[0021]
A file management apparatus according to a fifth aspect of the present invention is the file management apparatus according to the fourth aspect, wherein the recording position control unit instructs the copy of the content file, and the same content file is When a plurality of recording positions are recorded in the recording device, the metadata creating unit records a plurality of recording positions in the metadata file.
[0022]
A file management device according to a sixth aspect of the present invention is the file management device according to the fourth or fifth aspect, wherein the file management device receives an access process to the content file recorded on the recording device. And an access control unit that acquires the recording position recorded in the metadata file and specifies an access position on the recording medium.
[0023]
According to the invention of claim 6, since the access to the content file is performed based on the storage position recorded in the metadata file, if there are a plurality of the same content files, the content file to be accessed is Even if it is being used by another access process, by obtaining another storage position, it is possible to avoid collision of the access process.
[0024]
A file management method according to a seventh aspect of the present invention manages a content file and a metadata file in which metadata of the content file is recorded, and stores the metadata file and the content file in a recording medium. A file management method for controlling a recording device that records the content file on the recording medium, comprising: securing, on the recording medium, a recording area for recording the metadata and a plurality of recording areas for recording the content file according to an access speed. An area securing step instructing the recording device, acquiring the metadata or the metadata file of the content file, and further recording the access frequency, access time, and importance of the content file as the metadata, The metadata creation step of creating a data file; Referring to a database that records the importance of the content file set according to the access frequency of the content file and the access time, the access frequency and the access time that are recorded in the metadata file are referred to. An importance determination step of determining the importance of the content file, a recording position control step of determining a recording area in which the content file is to be recorded, according to the importance, A content file recording step of instructing any of storage, movement, and copying of the content file in the recording area determined by the recording position control step, and a recording position of the content file on a recording medium is recorded in the metadata file. Later, the storage device is instructed to store the metadata file. And having a metadata file recording process.
[0025]
According to the invention of claim 7, the importance is determined according to the access frequency and the access time of the content file, and further, the recording area where the content file is recorded is determined according to the importance, and the recording area is determined. Since the content file is saved, moved, or copied, the content file that is frequently accessed or the content file that is accessed for a long time is saved or moved to an area that can be accessed more quickly, so that the content file is saved. Since the access speed to access is increased, the access processing can be performed at high speed. Further, by copying a content file with high importance, the reliability of the recording apparatus can be improved.
[0026]
A file management program according to an eighth aspect of the present invention provides a file management program for causing a computer to control a recording device that records a content file and a metadata file in which metadata of the content file is recorded on a recording medium. A program, on the recording medium, a recording area for recording the metadata, and an area securing function for instructing the recording apparatus to secure a plurality of recording areas for recording the content file according to an access speed; The metadata creation function of acquiring the metadata or the metadata file of the content file, and recording the access frequency, access time, and importance of the content file as the metadata to create the metadata file And the access of the content file And a database in which the importance of the content file set in accordance with the access time is recorded, and based on the access frequency and the access time recorded in the metadata file, An importance determination function for determining the importance of the file, a recording position control function for determining a recording area for recording the content file according to the importance, and a recording position control function for the recording device. A content file recording function for instructing any of storage, movement, and copying of the content file in the determined recording area, and recording the recording position of the content file on a recording medium in the metadata file, A metadata file recording function for instructing the recording device to save a file; And said that the cell revealed.
[0027]
According to the invention of claim 8, the importance is determined according to the access frequency and the access time of the content file, and further, the recording area in which the content file is recorded is determined according to the importance, and the recording area is determined. Since the content file is saved, moved, or copied, the content file that is frequently accessed or the content file that is accessed for a long time is saved or moved to an area that can be accessed more quickly, so that the content file is saved. Since the access speed to access is increased, the access processing can be performed at high speed. Further, by copying a content file with high importance, the reliability of the recording apparatus can be improved.
[0028]
A file management program according to a ninth aspect of the present invention is the file management program according to the eighth aspect, wherein the recording position control function instructs copying of the content file, and the same content file is When a plurality of recording positions are recorded in the recording device, the metadata file recording function records a plurality of recording positions in the metadata file.
[0029]
A file management program according to a tenth aspect of the present invention is the file management program according to the eighth or ninth aspect, wherein each time an access process occurs to the content file recorded on the recording device, Preferably, an access control function for acquiring the recording position recorded in the metadata file and designating an access position on the recording medium is realized.
[0030]
According to the tenth aspect, access to the content file is performed based on the storage position recorded in the metadata file. Therefore, when there are a plurality of identical content files, the content file to be accessed is Even if it is being used by another access process, by obtaining another storage position, it is possible to avoid collision of the access process.
[0031]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to FIGS.
[0032]
First, a configuration of an embodiment of the present invention will be described with reference to FIGS.
[0033]
As shown in FIG. 1, the recording device 1 includes a file management unit 2, a control unit 6, and a recording medium 7. The file management unit 2 further includes a data processing unit 3, a first buffer memory 4, a second buffer memory 5, and an importance determination criterion table 11.
[0034]
The data processing unit 3 has a metadata creation function, an importance determination function, and a recording position control function. The metadata creation function is a function of extracting metadata from a content file and creating a metadata file.
[0035]
The importance determination function is a function of determining the importance of a content file by referring to the importance determination criterion table 11 according to the access time and access frequency recorded in the metadata file.
[0036]
The recording position control function is a function of instructing the control unit 6 to change the recording position of the content file or to record the content file in a plurality of locations according to the importance recorded in the metadata file. .
[0037]
Further, the data processing unit 3 has a function of dividing a recording area on the recording medium 7 connected thereto into a metadata recording area 8, a normal recording area 9, and a high-speed access area 10 with an arbitrary size and securing the area. .
[0038]
Further, the data processing unit 3 has a function of temporarily storing a content file and a metadata file received from the outside in a buffer memory, and transferring the content file and the metadata file to the control unit 6. Further, it has a function of outputting the content file and the metadata file read from the recording medium 7 to the outside.
[0039]
The buffer memory is used for temporarily storing a content file or a metadata file sent from the outside to the recording device 1. The content file is temporarily recorded in the first buffer memory 4, and is stored in the second buffer memory 5. Indicates that a metadata file is temporarily recorded.
[0040]
The control unit 6 controls the head of the recording medium 7 in accordance with the instruction of the data control unit 6 to store the content file and the metadata file at the address specified by the data processing unit 3, and It has a function of reading the content file and the metadata file stored at the designated address, and a function of acquiring the free space of each of the recording areas 8 to 10 on the recording medium 7.
[0041]
The recording medium 7 is divided into a metadata recording area 8, a normal recording area 9, and a high-speed access area 10. The metadata recording area 8 stores only the metadata file of the content file, and the normal recording area 9 and the high-speed access area. 10 stores content files according to the degree of importance. The size of each recording area can be arbitrarily determined.
[0042]
As shown in FIG. 2, the metadata file includes items such as file creation date and time, importance, access frequency, access time, recording size, and recording position, in addition to ordinary metadata such as file attributes. The recording position is added each time the same content file is copied to a plurality of recording areas.
[0043]
As shown in FIG. 3, the importance determination criterion table 11 stores therein a numerical value serving as a criterion for updating the importance according to the type of the content file and the access time and access frequency recorded in the metadata file. Data table.
[0044]
In FIG. 1, the control unit 6 and the recording medium 7 managed and controlled by the file management unit 2 are one set. However, as shown in FIG. . At that time, each recording area can be secured with an arbitrary size. The file management unit 2 also manages the drive letter of each recording medium 7, and the drive letter is also written at the recording position of the content file recorded in the metadata file.
[0045]
<Content file storage processing>
Next, a processing procedure when the content file is stored in the recording medium 7 will be described based on the flowcharts of FIGS. 1 to 4 and FIG. This storage process is performed when a content file created on a computer is recorded on the recording device 1 or when a content file and a metadata file are moved or copied from another recording device 1.
[0046]
In the present embodiment, the recording area on the recording medium 7 is divided into a metadata recording area 8, a normal recording area 9 and a high-speed access area 10 in accordance with the access speed, and is secured in advance. . The high-speed access area 10 is an area that can be accessed at a higher speed than the normal access area 9.
[0047]
First, when the data processing unit 3 receives the content file storage request and the content file, the data processing unit 3 temporarily stores the content file in the first buffer memory 4, and if the metadata file is received at the same time, the data processing unit 3 deletes the metadata file. The data is temporarily stored in the second buffer memory 5 (step S01).
[0048]
Next, referring to the metadata area, it is determined whether the same content file already exists (Step S02). If the same content file does not exist, the process proceeds to the new saving process, and it is determined whether a metadata file has been received at the same time as the saving process request (step S03).
[0049]
If the metadata file has not been received at the same time as the storage processing request, it is determined whether the content file stored in the first buffer memory 4 is a specific file format including metadata (step S04).
[0050]
If the content file stored in the first buffer memory 4 is in a specific file format including metadata, the data processing unit 3 reads the metadata from the content file (Step S05).
[0051]
When the content file stored in the first buffer memory 4 does not include metadata, or after reading the metadata from the content file stored in the first buffer memory 4, a metadata file is created in the second buffer memory 5. (Step S06). At this time, if the content file does not include the metadata, or if the value of each parameter in the metadata file is unknown, the initial value of the parameter is recorded. For example, if the importance of the content file to be recorded is unknown, an initial value of 1 is recorded as the importance of the content file.
[0052]
Next, the data processing unit 3 has a sufficient free space on the recording medium 7 for storing the content file stored in the first buffer memory 4 and a sufficient free space for storing the metadata file. Is determined (step S07). The area for checking the free space for storing the content file follows the importance.
[0053]
In the importance determination criterion table 11 of FIG. 3, for example, if the importance is 2, the free space of the high-speed access area 10 is checked. If the free space is insufficient, the data processing unit 3 stops the saving process, and returns an error message indicating that the free space is insufficient to the saving process request source (step S08).
[0054]
If the free space is sufficient, the data processing unit 3 saves the content file according to the importance (storage area, position) of the metadata file (step S09). After storing the content file, the recording position is recorded in the metadata file, and the metadata file is stored in the metadata area (step S10).
[0055]
If the same content file already exists in step S02, the process proceeds to the overwrite saving process, and the data processing unit 3 determines whether a metadata file has been received at the same time as the saving process request (step S11).
[0056]
When the metadata file is received at the same time as the request for the storage process, the received metadata file is compared with the metadata file in the metadata area, and it is determined whether or not the importance is set to a higher level (step S12).
[0057]
When the importance of the received metadata file is set higher than the metadata file in the metadata area, the data processing unit 3 updates the importance, recording position, and the like of the metadata file in the second buffer memory 5. (Step S13).
[0058]
Next, the data processing unit 3 performs the processing from step S07 to step S10, similarly to the new storage processing. At this time, the metadata file in the second buffer memory 5 is stored over the existing one in the metadata recording area 8.
[0059]
If the metadata file is not received at the same time as the storage processing request in step S11, the overwrite storage processing is stopped because the importance of the content file is unknown, and the priority of the content file is lower than that of the existing content file. Even if it has been set, the overwrite saving process is similarly stopped.
[0060]
If the importance is set lower in step S12, a process of increasing the importance of the existing content file by one may be performed.
[0061]
<Content file access processing>
Next, a processing procedure for accessing a content file will be described with reference to the flowcharts of FIGS. 1 to 4 and FIG.
[0062]
First, when receiving the access request for the content file (step S21), the data processing unit 3 refers to the metadata file of the content file for which the access request has been made, and acquires the recording position of the content file (step S22). If multiple files are stored, multiple files are acquired. At this time, the referred metadata file is developed in the second buffer memory 5.
[0063]
Next, the data processing unit 3 determines whether or not the content file requested to be accessed is accessible (step S23). Whether the state is accessible or not is determined by acquiring the operation status of the control unit 6.
[0064]
If the content file cannot be accessed, such as when the content file is being accessed according to another access request, the data processing unit 3 determines whether there is another accessible content file based on the read recording position. A determination is made (step S24).
[0065]
If there is no other accessible content file, the data processing unit 3 returns an error message indicating that the content file cannot be accessed, and stops the access processing (step S25).
[0066]
If there is another accessible content file, the data processing unit 3 accesses the content file (step S26). When the access is completed, the access time is obtained, the access time and access frequency items of the metadata file in the second buffer memory 5 are updated, and then the original metadata file recorded in the metadata area is overwritten and saved. (Step S27).
[0067]
When the access request is received, if there is no content file requested to be accessed in the recording medium 7, an error message indicating that the content file cannot be found is returned, and the access processing is stopped.
[0068]
<Content file storage location change processing>
Next, a processing procedure when changing the storage position of the content file will be described with reference to the flowcharts of FIGS. This process is a process performed in conjunction with the content file access process described above.
[0069]
After performing the content file access process from step S21 to step S27 (step S31), the data processing unit 3 acquires the number of accesses and the access frequency of the content file requested to be accessed from the metadata file of the content file. (Step S32).
[0070]
Next, the data processing unit 3 determines whether or not the number of accesses and the access frequency have reached a threshold which is a condition for updating the importance of the content file (step S33). If the access count or the access frequency has not reached the threshold, nothing is performed. When one of the access count and the access frequency reaches the threshold, the data processing unit 3 updates the item of importance of the metadata file (step S34).
[0071]
Next, the data processing unit 3 determines whether there is sufficient free space for storing the content file in the new area (Step S35). The area for checking the free space follows the new importance. If the free space is insufficient, the saving process is stopped, and an error message indicating that the free space is insufficient is returned to the saving process request source (step S36). If the free space is sufficient, the content file is saved according to the new importance (step S37), and the metadata file in which the new recording location is registered is overwritten and saved (step S38).
[0072]
For example, in the importance determination criterion table 11 of FIG. 3, the content file in the mpeg format has the importance of 1 until the total access time reaches 5000 hours, and the content file is stored in the normal recording area. If it exceeds (up to 10,000 hours), the content file becomes importance 2 and is moved to the high-speed access area.
[0073]
In the importance determination criterion table 11 of FIG. 3, when the importance is changed from the importance 1 to the importance 2, the data is moved from the normal recording area 9 to the high-speed access area 10. This is realized by saving the content file in the high-speed access area 10 and deleting the content file in the normal recording area 9 by a deletion process described later.
[0074]
As described above, by performing the content file access process and the content file storage position change process on the content file stored by the content file storage process, the content file frequently accessed or accessed for a long time can be accessed. Since the content file is stored or moved in an area that can be accessed at higher speed, the access processing can be performed at higher speed. Further, since the content file with high importance is copied to another recording area, the reliability of the recording device 1 can be improved.
[0075]
Furthermore, since access to the content file is performed based on the storage location recorded in the metadata file, if there are multiple identical content files, the content file to be accessed is being used by another access process. Even so, by acquiring another storage position, collision of access processing can be avoided.
[0076]
<Content file deletion process>
Next, a processing procedure when deleting a content file on the recording medium 7 will be described based on the flowcharts of FIGS. 1 to 4 and FIG.
[0077]
Upon receiving the content file deletion request (step S41), the data processing unit 3 refers to the metadata file of the content file for which the deletion request has been made, and expands all recording positions in the second buffer memory 5 (step S42). ).
[0078]
Next, the data processing unit 3 refers to the recording position recorded in the metadata file, determines whether there is a content file requested to be deleted (step S43), and determines whether the content file requested to be deleted exists. If not, an error message indicating that the file does not exist is returned, and the deletion process is stopped (step S44).
[0079]
If there is a content file requested to be deleted, the data processing unit 3 deletes the content file from the recording position of the content file described in the metadata file (step S45), and deletes the meta file in the metadata recording area 8. The data file is deleted (step S46).
[0080]
When a plurality of recording positions of the content file are recorded in the metadata file, all the content files are deleted.
[0081]
【The invention's effect】
As described above, according to the present invention, importance is determined according to the access frequency and access time of a content file, and further, a recording area in which the content file is recorded is determined according to the importance, and Since the content file is saved, moved, or copied in the recording area, by storing or moving a frequently accessed content file or a content file that is accessed for a long time to an area that can be accessed more quickly, Since the access speed to the content file is increased, the access processing can be performed at high speed. Further, by copying a content file with high importance, the reliability of the recording apparatus can be improved.
[0082]
Furthermore, since access to the content file is performed based on the storage location recorded in the metadata file, if there are multiple identical content files, the content file to be accessed is being used by another access process. Even so, by acquiring another storage position, collision of access processing can be avoided.
[Brief description of the drawings]
FIG. 1 is a functional block diagram of a configuration of a recording device and a file management unit.
FIG. 2 is a diagram showing a configuration of a metadata file.
FIG. 3 is a diagram illustrating an example of an importance determination criterion table.
FIG. 4 is a diagram showing another embodiment of the recording apparatus.
FIG. 5 is a flowchart showing a procedure for processing for saving a content file.
FIG. 6 is a flowchart showing a procedure for accessing a content file.
FIG. 7 is a flowchart illustrating a procedure for changing a storage position of a content file;
FIG. 8 is a flowchart showing a content file deletion processing procedure.
[Explanation of symbols]
1 Recording device
2 File management unit
3 Data processing unit
4 First buffer memory
5 Second buffer memory
6 control unit
7 Recording media
8 Metadata recording area
9 Normal recording area
10 High-speed access area
11 Importance judgment criteria table

Claims (10)

A recording device including a recording medium that records a content file and a metadata file in which metadata of the content file is recorded,
A database that records the importance of the content file set according to the access frequency of the content file and the access time,
On the recording medium, a recording area for recording the metadata file and a plurality of recording areas for recording the content file according to the access speed are secured, and the metadata file is stored in a designated recording area, and the Recording medium control means for recording a content file;
Obtain the metadata or the metadata file of the content file, further record the access frequency of the content file, access time, importance as the metadata to create the metadata file, Metadata creation means for instructing the storage medium control means to save,
With reference to the database, the access frequency recorded in the metadata file, based on the access time, importance determining means for determining the importance of the content file,
In accordance with the importance, a recording area for recording the content file is determined, and the content file is saved, moved, or recorded by a recording position control unit that instructs the recording medium control unit to copy.
A recording device comprising: When the recording position control unit instructs copying of the content file and a plurality of the same content files are recorded on the recording medium, the metadata creating unit includes a plurality of recording positions in the metadata file. The recording apparatus according to claim 1, wherein the recording is performed. Upon receiving an access process to the content file recorded on the recording medium, acquiring the recording position recorded on the metadata file and providing an access control unit for specifying an access position on the recording medium. The recording apparatus according to claim 1 or 2, wherein A file that manages a content file and a metadata file in which metadata of the content file is recorded, and controls the metadata file and a recording device that records the content file in a designated recording area on a recording medium. A management device,
A database that records the importance of the content file set according to the access frequency of the content file and the access time,
On the recording medium, a recording area for recording the metadata file, and an area securing unit for instructing the recording apparatus to secure a plurality of recording areas for recording the content file according to an access speed,
Obtain the metadata or the metadata file of the content file, further record the access frequency of the content file, access time, importance as the metadata to create the metadata file, Metadata creating means for instructing the recording device to save,
With reference to the database, the access frequency recorded in the metadata file, based on the access time, importance determining means for determining the importance of the content file,
According to the importance, determine a recording area for recording the content file, storage of the content file, move, recording position control means for instructing any one of the copy to the recording device,
A file management device comprising: When the recording position control unit instructs to copy the content file, and when the same content file is recorded in the recording device a plurality of times, the metadata creating unit sets a plurality of recording positions in the metadata file. 5. The file management apparatus according to claim 4, wherein the file is recorded. When receiving an access process to the content file recorded in the recording device, the recording device acquires the recording position recorded in the metadata file, and includes an access control unit that specifies an access position on the recording medium. The file management device according to claim 4 or 5, wherein A file management method for managing a content file and a metadata file in which metadata of the content file is recorded, and controlling a recording device that records the metadata file and the content file on a recording medium,
On the recording medium, a recording area for recording the metadata, an area securing step of instructing the recording apparatus to secure a plurality of recording areas for recording the content file according to the access speed,
Acquiring the metadata or the metadata file of the content file, and further recording the access frequency, access time, and importance of the content file as the metadata to create the metadata file; ,
The access frequency and the access time recorded in the metadata file are referred to a database that records the importance of the content file, which is set according to the access frequency of the content file and the access time. Based on the importance determination step of determining the importance of the content file,
A recording position control step of determining a recording area for recording the content file according to the importance;
A content file recording step of instructing the recording device to save, move, or copy the content file in a recording area determined by the recording position control step;
After recording the recording position of the content file on a recording medium in the metadata file, a metadata file recording step of instructing the recording device to save the metadata file,
A file management method comprising: A file management program for causing a computer to control a recording device that records a content file and a metadata file in which metadata of the content file is recorded on a recording medium,
On the recording medium, a recording area for recording the metadata, an area securing function for instructing the recording apparatus to secure a plurality of recording areas for recording the content file according to the access speed,
The metadata creation function of acquiring the metadata or the metadata file of the content file, and further recording the access frequency, access time, and importance of the content file as the metadata to create the metadata file; and ,
The access frequency and the access time recorded in the metadata file are referred to a database that records the importance of the content file, which is set according to the access frequency of the content file and the access time. Based on the importance determination function for determining the importance of the content file,
A recording position control function for determining a recording area for recording the content file according to the importance;
A content file recording function for instructing the recording device to save, move, or copy the content file in a recording area determined by the recording position control function,
After recording the recording position of the content file on a recording medium in the metadata file, a metadata file recording function instructing the recording device to save the metadata file,
A file management program characterized by realizing: When the recording position control function instructs copying of the content file and the same content file is recorded in the recording device in plurals, the metadata file recording function includes a plurality of recording positions in the metadata file. The file management program according to claim 8, wherein the file management program is recorded. Every time an access process occurs to the content file recorded in the recording device, the recording position recorded in the metadata file is acquired, and an access control function for designating an access position on the recording medium is realized. 10. The file management program according to claim 8, wherein:

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