JPH03142747A - Method and device for optimumizing medium moving distance of electronic filing system - Google Patents

Abstract

PURPOSE:To shorten a processing time of data by changing a moving distance to an optical disk drive corresponding to the use frequency of a disk medium. CONSTITUTION:After sampling the data showing the use condition of the optical disk medium for certain fixed time, a host application part 1 outputs a command to a set light control mechanism 2 for optimumizing the medium moving distance. The set light control mechanism 2 receiving this command executes weighting to each optical disk medium by utilizing a weight calculating mechanism 4. Based on the weight data calculated by the weight calculating mechanism, the set light control mechanism 2 outputs an instruction to a medium arrangement changing mechanism 5 so as to change the cell position of the medium. The medium arrangement changing mechanism 5 moves the medium in a set optical device 8 so as to obtain the order of weight of each medium in the position of the medium. Namely, after the move of the medium is completed, the medium with the largest weight, for example, which is most frequently moved, is arranged in a cell most closest to the optical disk drive of the set optical device 8. Thus, the moving time of the medium with the high use frequency is made short and the processing time of the data can be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method and apparatus for optimizing medium movement distance in an electronic filing system, and particularly to a method and apparatus for optimizing medium movement distance in an electronic filing system using optical disk media. Regarding.

[Prior Art] Some electronic filing systems are equipped with a collective optical device (an automatic optical disk medium reloading device). An example of this collective light device is shown in FIG.

The collective light devices shown in FIG. 3 are No. 1 to No.
The optical disc carrier 13 is provided with n cells, an optical disc drive 11, a rail 12, and a picker arm 13A.

When using this collective light device, the optical disk medium is input into the input port 14 after specifying which cell in the collective light device, that is, in the storage shelf for the media loaded into the device. When it is desired to read data from the inserted optical disk medium, it is taken out by the optical disk carrier 13 and moved to the optical disk drive 11. When the optical disk drive 11 finishes reading the data, the It is returned to the cell.The cell position to which it is returned is fixed.

[Problem to be solved by the invention]

In the method of using the collective optical device described above, the position of the cell of the inserted optical disk medium is fixed.

For example, as shown in FIG. 3, the optical disk medium accommodated in cell No. 1 moves a distance L+ when reading data. Further, the optical disk media accommodated in cells No. and n move a distance of .

Therefore, if a frequently used optical disk medium is located far away from the optical disk drive, for example in cell No. or n, it takes the longest time to set this medium in the optical disk drive and return it from the drive to the cell. Therefore, of the time required to read data from this optical disk medium, the time required to move the medium becomes longer, and the electronic filing system appears to be slower.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and apparatus for optimizing medium movement distance in an electronic filing system that can eliminate such drawbacks and shorten data processing time.

[Means to solve the problem]

The present invention provides an electronic filing system that includes an optical disk drive that reads data from a disk medium and respective cells that store the disk medium, and that has a collective optical device that has a different distance of movement from each cell to the optical disk drive. The optimization method includes detecting the usage status of each disk medium, weighting each disc medium based on the detected usage status, and based on this weighting, determining the amount of data stored in the cells of the collective optical device. The present invention is characterized in that the moving distance to the optical disk drive is changed depending on the frequency of use of the disk medium by replacing the disk medium.

Furthermore, in the above-described method for optimizing medium movement distance in an electronic filing system of the present invention, it is preferable to use the number of times each disk medium is moved and the usage time in a certain period as the usage status of the disk medium.

The present invention also provides a medium for an electronic filing system that includes an optical disk drive that reads data from a disk medium and respective cells that store the disk medium, and that includes a collective optical device that has a different moving distance from each cell to the optical disk drive. A moving distance optimization device comprising: a cell management table for registering the usage status of disk media arranged in each cell of the collective light device; and a usage status of each disk medium registered in the cell management table. a weighting calculation mechanism that weights each disk medium according to the usage status of the disk medium arranged in each cell; and a weighting calculation mechanism that weights each disk medium determined by the weighting calculation mechanism. a medium arrangement change mechanism that changes the position of a cell of a disk medium based on information; and a collective light control mechanism that controls the cell management table, the medium state management mechanism, the weight calculation mechanism, and the medium arrangement change mechanism. It is characterized by

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram showing an embodiment of the present invention. The medium movement distance optimization device of this electronic filing system includes a high-level abbreviation program section 1, a collective light control mechanism 2, a medium state management mechanism 3, and a weighting calculation mechanism 4.
, a medium arrangement change mechanism 5 , a table section 6 , a hardware control section 7 , and a collective light device 8 .

In such a medium movement distance optimization device for an electronic filing system, the upper application section 1 specifies the volume name of the optical disk medium to be used and makes a usage declaration to the collective light control mechanism 2.

Preemptive gathering? 11 mechanism 2 receives the use declaration from the higher-level application program unit 1, and the medium status management mechanism 31 weight calculation mechanism 4. Media arrangement changing mechanism 5. Controls the table section 6.

The medium status management mechanism 3 records the number of times each optical disk medium is moved;
Manage usage time.

The weight calculation mechanism 4 weights each optical disk medium depending on the usage status of each optical disk medium.

The medium arrangement change mechanism 5 changes the position of the cell of each optical disk medium based on the weight information of each medium determined by the weight calculation mechanism 4.

The table unit 6 is a cell management table in which the volume name, number of times of movement, usage time, etc. of the optical disk medium placed in each cell is registered, and includes a cell management file 6A. An example of the cell management table is shown in FIG. As shown in FIG. 2, the number of movements and the usage time are updated depending on the usage status of the optical disk medium.

When optimization is performed, each volume name is rewritten to that location. The table unit 6 also includes the medium status management mechanism 31 weight calculation mechanism 4. Information is transmitted to the medium arrangement change mechanism 5.

The collective light device 8 is an automatic optical disk medium reloading device.

An example of this collective light device 8 is shown in FIG. 3 mentioned above. This collective light device 8 transmits signals to the collective light control mechanism 2 via the hardware control section 7 .

Next, the operation of the medium movement distance optimization device of this electronic filing system will be explained.

Normally, the upper application section 4 specifies the volume name of the optical disk medium that it wants to use and declares its use to the collective optical control mechanism 2. It is determined in which cell within the collective optical device 8 the medium is located, and an instruction is given to the hardware control unit 7 to move the medium. Thereafter, in the collective optical device 8, the medium is moved from the cell to the optical disk drive, and data is read and written.

When the processing for the designated medium is completed, the upper application section 1 declares the release of the medium to the collective light control mechanism 2. In response to this, the collective light control mechanism 2 notifies the medium status management mechanism 3 that the use of the medium has ended. The medium status management mechanism 3 counts the usage time of this medium until it receives the termination notification, and after receiving the termination notification, it adds 1 to the number of times the cell management table has been moved, and further adds the current usage time to the previous usage time. Add. In this way, each time a certain optical disk medium is used, the number of times the medium has been moved and the usage time are updated in the cell management table shown in FIG.

After collecting data on the usage status of the optical disk medium for a certain period of time, the host application unit 1 issues an instruction to the collective light control mechanism 2 to optimize the medium moving distance. Upon receiving this, the collection preemption '4B mechanism 2 uses the weighting calculation mechanism 4 to weight each optical disk medium. At this time, the weight calculation mechanism 4 calculates the weight m of each medium by applying the data of the number of times of movement and the usage time of the information in the cell management table of the table section 6 to the following equation (1).

Cyomi = αC50β ... (1) i mt: Weight of the medium in the i-th cell ct: Number of times the medium in the first cell moves tl s
Total usage time of the medium in the i-th cell i Reciprocal of the usage time per time 1° α, β: Coefficients (set arbitrarily) By arbitrarily setting the coefficients α and β in equation (1), the following can be obtained. The meaning of weighting can be changed as shown in the example below.

Example (a): The medium that moves many times has a large weight (β=
(in case of O).

Example (b): The medium that is used for a short time each time has a large weight (when α=O). In other words, the shorter the usage time, the more opportunities to move.

Example (C): Mixture of Examples (a) and (b) (α and β are set to appropriate values) Based on the weight data obtained by the weight calculation mechanism, the collective light control mechanism 2 determines the medium arrangement. A command to change the cell position of the medium is issued to the change mechanism 5.

The medium arrangement change mechanism 5 moves the media within the collective light device 8 so that the positions of the media are in the order of the weight of each medium. In this way, after the movement of the medium is completed, the medium with the highest weight, for example, the medium that is moved the most, is placed in the cell closest to the optical disk drive of the collective optical device 8. Therefore, the next time this medium is used, the time required to move it from the cell of the collective optical device 8 to the optical disk drive will be minimized.

As described above, in this embodiment, the collective light control mechanism controls the collective light device according to commands from the higher-level application section, and also reflects the usage status of the medium in the table section through the medium status management mechanism. Based on the optimization command from the upper application section, the collective light device mechanism performs a weighting calculation mechanism,
The media layout change mechanism is used to change the layout of optical disk media.

In other words, in an electronic filing system, the number of times a medium is moved in a certain period of time is determined so that the moving distance of an optical disk medium within a collective optical device (automatic optical disk medium loading device) is shorter for frequently used media. Then, each medium is weighted based on the usage time, and based on this information, the arrangement of each medium is reconfigured and the replacement of optical disk media is controlled.

〔Effect of the invention〕

As explained above, the present invention weights the media based on the usage history of the media over a certain period of time, and changes the arrangement of the media in the collective light device accordingly, thereby reducing the travel time of the frequently used media. This has the effect of shortening the data processing time as an electronic filing system.

Furthermore, by repeatedly implementing the present invention, the above-mentioned effects become more apparent.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an embodiment of the present invention, and FIG. 2 is a schematic diagram showing an embodiment of the present invention.
FIG. 3 is a diagram showing an example of the internal configuration of the collective light device. l...Upper application program unit 2...Collected light control mechanism 3...Medium state management mechanism 4...Weighting calculation mechanism 5...Medium arrangement change mechanism 6 ...Table section 6A...Cell management file 7...Hardware control section 8...Collecting light device Fig. 1 Cell management table Fig.

Claims (3)

[Claims] (1) Optimum media movement distance for an electronic filing system that is equipped with an optical disk drive that reads data from disk media and cells that store the disk media, and that is equipped with a collective optical device that has a different movement distance from each cell to the optical disk drive. The method includes detecting the usage status of each disc medium, weighting each disc medium based on the detected usage status, and based on this weighting, the usage status of each disc medium is 1. A method for optimizing a medium movement distance in an electronic filing system, the method comprising replacing the disk medium in the electronic filing system and changing the movement distance to the optical disk drive according to the frequency of use of the disk medium. (2) The method for optimizing medium movement distance in an electronic filing system according to claim 1, characterized in that the number of times each disk medium is moved in a certain period and the usage time are taken as the usage status of the disk medium. Media travel distance optimization method. (3) Optimum media movement distance for an electronic filing system that is equipped with an optical disk drive that reads data from a disk medium and each cell that stores the disk medium, and that is equipped with a collective optical device that has a different movement distance from each cell to the optical disk drive. a cell management table for registering the usage status of disk media arranged in each cell of the collective light device, and managing the usage status of each disk medium registered in the cell management table. a media status management mechanism; a weighting calculation mechanism that weights each disk medium according to the usage status of the disk media arranged in each cell; and weight information for each disk medium determined by the weighting calculation mechanism. A medium arrangement change mechanism that changes the position of a cell of a disk medium; and a collective light control mechanism that controls the cell management table, the medium state management mechanism, the weight calculation mechanism, and the medium arrangement change mechanism. A media movement distance optimization device for an electronic filing system.