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US 11,456,015 B2Granted
Derivation device, derivation method, derivation program, and magnetic tape
AssigneeFUJIFILM Corporation
InventorMichitaka Kondo
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AssigneeFUJIFILM Corporation
InventorMichitaka Kondo
Estimating the term…
A derivation device is a device that derives a reading path by a reading element in a case where plural pieces of data to be read are read from a recording medium, and includes a first derivation unit that derives a value representing a recording density of the data for each of plural areas in which the plural pieces of the data to be read are recorded, and a second derivation unit that derives a path for sequentially reading the data as the reading path for an area in which the value representing the recording density is equal to or larger than a predetermined threshold value and derives the reading path according to a predetermined path determination method for an area in which the value representing the recording density is less than the threshold value.
A derivation device that derives a reading path for a reading element in a case where a plurality of pieces of data to be read are read from a recording medium, the device comprising:
A derivation method of deriving a reading path by a reading element in a case where a plurality of pieces of data to be read is read from a recording medium, the method comprising:
A non-transitory storage medium storing a program that causes a computer to perform derivation processing that derives a reading path by a reading element in a case where a plurality of pieces of data to be read is read from a recording medium, the derivation processing comprising:
Dependencies are inferred from the claim text.
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Formatting, e.g. arrangement of data block or words on the record carriers: on tapes
Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires: magnetic tapes
Control data, system data or management information, i.e. data used to access or process user data: physical format specifications of the record…
Information storage based on relative movement between record carrier and transducer
About 13 years 4 months of term left · ends 4 Mar 2040 (estimated)
The present disclosure relates to a derivation device, a derivation method, a non-transitory storage medium storing a derivation program, and a magnetic tape.
In the related art, a method of determining a reading path of a plurality of pieces of data stored in a tape medium has been disclosed (refer to JP2012-128937A). In this method, a nearest neighbor method or a pairwise exchange method is used as the method of determining the reading path.
However, in a case where data to be read is read by the reading path determined by the determination method of the reading path, such as the nearest neighbor method or the pairwise exchange method, a data reading time may not necessarily be shortened.
FIG. 1 is a block diagram showing an example of a configuration of a recording/reading system according to each embodiment.
FIG. 2 is a plan view of an example of a magnetic tape according to each embodiment.
FIG. 3 is a block diagram showing an example of a hardware configuration of an information processing device according to each embodiment.
Hereinafter, embodiments for implementing a technique of the present disclosure will be described in detail with reference to drawings.
First, a configuration of a recording/reading system 10 according to the present embodiment will be described with reference to FIG. 1. As shown in FIG. 1, the recording/reading system 10 includes an information processing device 12 and a tape library 14. The tape library 14 is connected to the information processing device 12. The information processing device 12 and a plurality of terminals 16 are connected to a network N and can communicate through the network N.
The tape library 14 comprises a plurality of slots (not shown) and a plurality of tape drives 18, and a magnetic tape T as an example of a recording medium is stored in each slot. An example of the magnetic tape T includes a linear tape-open (LTO) tape.