JPH03268037A - Data editing system - Google Patents

Abstract

PURPOSE:To improve the retrieval efficiency by allocating and storing the retrieval sequence to a reproducing exclusive optical disk in order of high access frequency. CONSTITUTION:A system controller 5 controls optical recording to a disk body which becomes a master disk of a reproducing exclusive optical disk by a master disk generating device 4 in accordance with a table in which management information is arranged in order of high access frequency, and records management and file data, respectively in order of high access frequency from the head of a management information area and the file data area of the disk body which becomes the master disk. Also, in this case, in the disk body which becomes the master disk, title data for summarizing this recorded whole data group is also recorded together. In such a manner, the retrieval of the data stored in the reproducing exclusive optical disk can be executed efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a data editing method for editing a plurality of data stored in a data base to create data to be stored on a read-only optical disc.

[Prior Art] A read-only optical disk, such as a CD-ROM, has a relatively large storage capacity and is suitable for storing file data such as image data.A read-only optical disk containing the same data can be transferred by transfer or other means. Since it can be easily produced in large quantities, it is becoming a low-cost recording medium.

This read-only optical disk such as a CD-ROM is
A program for storing file data such as image data in a database has already been commercialized, and the data is stored on a read-only optical disk in the same order as the data stored in the database.

[Problem to be solved by the invention] As mentioned above, in the conventional method, data is stored on a read-only optical disk in the same order as the data stored in the database, and the access frequency of each data is not considered. It wasn't paid. In other words, data is arranged on a read-only optical disk regardless of access frequency. Therefore, when reading data from a read-only optical disk, even data that is frequently accessed may have a low search ranking. had the problem of long access times.

The present invention has been made in view of the above points, and its purpose is to edit data stored on a read-only optical disc so that data stored on the read-only optical disc can be searched efficiently. The objective is to provide a data editing method.

[Means for Solving the Problems] In order to achieve the above-mentioned objects, the present invention provides, for example, an optical disk recording medium, a magnetic disk recording medium, a magnetic tape recording medium, etc., which are stored in a database and used for the same purpose. In a data editing method that edits a plurality of pieces of data to create data to be stored on a read-only optical disk, a system control device that accesses data to the recording medium that is the data base is Create an access frequency table for each piece of data that is fixedly arranged and stored on the medium, and refer to the access frequency table to arrange the data in descending order of the access frequency. The data groups used in the above are sorted and stored on a read-only optical disc, and title data summarizing the entire data group stored on the read-only optical disc is also stored on the read-only optical disc.

[Operation] The access frequency is set as one of the indexes for each data in the system's database, and for example, access simulation is performed for each data used for the same purpose to be imported from the database to a read-only disk. The number of accesses is updated every time individual data is accessed from the database. The access frequency table is completed by counting the number of accesses through access simulation or by counting the number of accesses during actual system operation. Then, the system refers to the access frequency table and, for example, constructs a virtual device in its own memory area in which the data groups used for the same purpose are arranged in the order of the highest access frequency, and The data is recorded on a master disk in the form of an arrangement of data, and a master disk for a playback-only optical disk is manufactured. Also, at this time, the disc master has
Title data summarizing the entire recorded data group is also recorded. A known stamper is produced from the obtained master disc, and an arbitrary number of read-only optical discs are produced using this stamper.

Since the thus obtained read-only optical disk is stored with a search order assigned in descending order of access frequency, search efficiency is high and overall access time can be shortened. A read-only optical disc produced in this way is used to copy a large amount of information such as the same image data, and also to copy data that is used for approximately the same purpose at each distribution destination (or purchase location) A recording device that is suitable for recording various design data, various document data, etc. distributed to related departments scattered around, and can store a large amount of data and can be accessed at high speed can be provided at low cost.

[Example 1] An example of the present invention will be described below with reference to FIGS. 1 to 6.

FIG. 1 shows a data editing/master production system to which the data editing method of the present invention is applied. In the same figure, l
is a terminal device, equipped with a keyboard, display, etc.
The system is caused to perform various processes through operations by an operator. Reference numeral 2 denotes an image input device, which has a television camera, an image scanner, etc., and allows desired image data to be input.

3 is an optical disk file device that stores optical disks (
For example, although a rewritable optical disk is used in this embodiment, any recording medium can be used as the data base to store the image data input from the image input device 2. It has become. Reference numeral 4 denotes a master disk manufacturing device, which has a known function of optically recording on a disk body that is a master disk of a read-only optical disk. 5 is a system control device that performs overall control of the entire system, and includes a CPtJ (central processing unit) 5a that performs arithmetic processing, etc.;
It has a program memory 5bu that stores program data and a work area, and executes various processes according to predetermined programs.

In the configuration described above, when new image data is input from the image input device 2, the optical disk file device 3 is driven by an instruction from the system control device 5, and the new image data is stored on the optical disk.

Data is written to the optical disc in the order in which the image data is input, and the management information (file directory) of the image data and the file data, which is the substance of the image data, are written at the beginning of the management information area and file data area on the optical disc, respectively. Data is written to empty areas sequentially. FIG. 2 schematically shows the management information area of an optical disc. The management information area includes an image number setting area where the number of image data is set at the beginning, and management information corresponding to each image in the order of input. A unit management information area for storage is provided. As shown in the right part of Figure 2.

Each unit management information area contains the image (file data) name,
The image logical address, image data length, access frequency, and value image information are written, and in the initial state of writing each image data, the access frequency of the unit management information area is O.
(Information indicating O is written).

As described above, image data to be stored on a read-only optical disk and used for the same purpose is recorded in the data memory of the system (the rewritable optical disk of the optical disk file device 3).

Thereafter, for example, an access simulation is performed by the terminal device 1, and each time a command to read image data of - arrives, the image name of the management information on the rewritable optical disc is compared with the input image name, and the desired image data is compared with the input image name. The position of the image data is searched, and the corresponding image data is read out. At this time, each time each piece of data is accessed, the number of accesses in the management information is updated one by one.

Through such access simulation or actual system operation, the access frequency is updated and written in each management information corresponding to each image data on the rewritable optical disc. Then, for example, when the access simulation is finished, by referring to the access frequency information in each of the management information, the system (the system control device 5) controls each image data Nα as shown in FIG. 3, for example. An access frequency table is created that shows the relationship between (actually, the sector name and image name of the management information that corresponds to this) and the frequency of use. In the simplified example shown in the figure, the access frequency of image data is 3, the access frequency of image data is 4, the access frequency of image data is 5, the access frequency of image data is 4, and the access frequency of image data is 4. This indicates that the access frequency of is 1.

Note that in this embodiment, access frequency update writing is performed as follows:
Although this information is stored in each management information on the rewritable optical disk, an access frequency update recording area is secured in an appropriate recording area on the system control device 5 side in a form that corresponds to the image data name, etc., and this allows the access frequency to be updated. You may also create a table.

In addition to the above-mentioned rewritable optical disc, various recording media can be used as the data base, for example, a read-only optical disc, a read-only optical disc,
Optical recording media such as write-once optical discs, floppy disks, and hard disks.

A magnetic recording medium such as a magnetic tape can be used.

If a data base is a read-only recording medium such as a read-only optical disk or a write-protected recording medium, these recording media contain all the data necessary for editing (for example, image data). ) is prepared as being stored in advance, and the above-mentioned access frequency update record area is naturally set on the system control device 5 side.

Furthermore, if a write-once optical disc is used as the data base, new image data can be recorded additionally, but in this case as well, since it is a write-once type, the access frequency update recording area must be set on the system control device 5 side. be done.

In addition, when using a magnetic recording medium as a data base,
New image data can be sequentially added and recorded, and the above-mentioned access frequency update recording area can be provided either on the recording medium side (data base side) or on the system control device 5 side.

In any case, it is desirable that the recording capacity of the recording medium serving as the data base be less than or equal to the storage capacity of a read-only optical disc produced by editing the contents of the data base as described later.

When producing a master disc for a read-only optical disc, the system control unit 5 constructs a virtual file device in the program memory area, and refers to the access frequency table described above for the virtual file device, and performs the process shown in FIG. A table is created in which management information (file directories) corresponding to each image data is sorted in descending order of access frequency as shown. Then, the system control device 5 controls the optical recording on the disk body that will become the master of the read-only optical disk by the master disc manufacturing device 4, according to the table in which the management information is arranged in descending order of access frequency, and The management information and file data (image data) are respectively recorded in order of frequency of access from the beginning of the management information area and file data area of the body. At this time, title data summarizing the entire recorded data group is also recorded on the master disc body (the title is input through the terminal device 1).

A stamper is produced based on the master disc produced in this manner, and an arbitrary number of read-only optical discs are produced from the stamper. Figure 5 schematically shows the contents of the management information area and file data area of a read-only optical disc produced (stored) in a format corresponding to the table in Figure 3.4, and shows the management information in descending order of access frequency. and file data (image data), and those that are accessed frequently are ranked high in the search ranking.5 Figure 6 shows an example of a system that uses the read-only optical disc manufactured as described above. It shows. In the figure, numeral 6 denotes a terminal device, which is equipped with a keyboard, a display, etc., and allows the system to execute various processes through operations by an operator.

Reference numeral 7 denotes a read-only disk device that reads image data from a read-only optical disk. 8 is a system control device that performs overall control of the entire system, and C that performs arithmetic processing, etc.
It has a PU (central processing unit) 8a and a program memory 8b that stores program data and a work area, and executes various processes according to predetermined programs. When the name of the image data to be accessed is input from the terminal device 6, the read-only disk device 7 searches the image data name of each management information in the management information area of the read-only optical disk from the beginning via the system control device 8. The input image data name and the stored image data name are compared, and if the image data names match, image data having a length equal to the image data length is accessed from the image logical address stored in the management information. At this time, since the management information area is searched from the beginning, in other words, the management information that is accessed most frequently is searched, so that the efficiency of the access operation can be improved and the search time can be shortened.

Therefore, using the data editing/master production system shown in Figure 1, for example, we investigated the usage status of a large amount of data at the head office, edited each piece of data according to access frequency, and created a playback system in which the data was stored in order of access frequency. By distributing dedicated optical discs to each branch office that uses data for the same purpose as the head office, it is possible to shorten the access time for processing at each branch office, and it is also possible to easily create a large number of playback-only optical discs. Therefore, the cost reduction effect is also large.

[Effects of the Invention] As described above, according to the present invention, there is provided a data editing method for editing a storage file for a read-only optical disc, which allows efficient searching of data stored on a read-only optical disc. can be provided, and its industrial value is great.

[Brief explanation of drawings]

The drawings all relate to one embodiment of the present invention, and FIG. 1 is an explanatory diagram showing a data editing/master production system to which the data editing method of the present invention is applied, and FIG. 2 is an explanatory diagram showing the data editing/master production system. An explanatory diagram schematically showing the management information area of an optical disk used as a base, Fig. 3 is a simplified explanatory diagram showing an example of an access frequency table, and Fig. 4 is a diagram sorted in order of access frequency. FIG. 5 is a simplified explanatory diagram showing an example of management information, FIG. 5 is a simplified explanatory diagram showing the state of data stored on a read-only optical disk, and FIG. 6 is an example of a system using a read-only optical disk. FIG. 1...terminal device, 2...image input device,
3... Optical disk file device, 4... Master disc production device, 5... System control device, 6... Terminal device, 7... Playback-only disk device, 8... System controller. Zen 3 diagrams Ito 4 diagrams Ryo 5 diagrams

Claims (6)

[Claims] (1) In a data editing method in which multiple pieces of data stored in a database and used for the same purpose are edited to create data to be stored on a read-only optical disk, data to a recording medium serving as the database is The system control device that executes the access creates an access frequency table for each data stored in the recording medium that is the data base, and refers to the access frequency table to arrange the data in descending order of access frequency. , the data group stored in the recording medium and used for the same purpose is rearranged and stored on a read-only optical disk, and title data summarizing the entire data group stored on the read-only optical disk is also read-only. A data editing method characterized by storing data on an optical disk. (2) The data editing method according to claim 1, wherein the recording medium serving as the data base is also a read-only optical disc. (3) A data editing method according to claim 1, wherein the recording medium serving as the data base is a magnetic disk or a magnetic tape. (4) A data editing method according to claim 3, wherein the data stored on the magnetic disk or magnetic tape is written in a fixed order. (5) Data editing according to claim 1, wherein the recording capacity of the read-only optical disk on which the data of the recording medium serving as the database is edited and stored is greater than or equal to the storage capacity of the recording medium serving as the database. method. (6) The data editing method according to claim 1, wherein a plurality of said read-only optical disks are produced and are information media that are distributed or distributed to users who use them for the same purpose.