JPS6258464A - Control system for file storage area on magnetic tape storage medium - Google Patents

Control system for file storage area on magnetic tape storage medium

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Publication number
JPS6258464A
JPS6258464A JP19996885A JP19996885A JPS6258464A JP S6258464 A JPS6258464 A JP S6258464A JP 19996885 A JP19996885 A JP 19996885A JP 19996885 A JP19996885 A JP 19996885A JP S6258464 A JPS6258464 A JP S6258464A
Authority
JP
Japan
Prior art keywords
storage
storage area
magnetic tape
area
address
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP19996885A
Other languages
Japanese (ja)
Inventor
Shuichi Ishikawa
秀一 石川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP19996885A priority Critical patent/JPS6258464A/en
Publication of JPS6258464A publication Critical patent/JPS6258464A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To store files even if the titled storage area is not continuous, by assigning the storage area to an optional file with optional size from an optional position. CONSTITUTION:In case of allocation of the storage area on a magnetic tape storage medium 1, an unused storage area required and sufficient for storage is obtained by a referring means 5, and a pair of the address of this storage area and a file identification name are registered in a storage part L2 by a registering means 5. Simultaneously, the use state of the storage area in a storage part L1 is changed from the unused state to the used state by an updating means 4. In case of increase of the storage capacity of the file, an unused storage area required and sufficient for increase is obtained by the referring means 3, and the address of this storage area is added to the storage part L2 by the updating means 7. Simultaneously, the use state of the storage area in the storage part L1 is changed from the unused state to the used state by the updating means 4. In case of release of the storage area of the file, the use state of the storage area in the storage part L1 is changed from the used state to the unused state by the updating means 4. Simultaneously, the file disc identification name and the address of the storage area in the storage part L2 are deleted by the updating means 7.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、情報処理等で用いられる記憶装置の中で、磁
気テープ記憶媒体を扱うシステムに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a system that handles magnetic tape storage media in storage devices used in information processing and the like.

〔従来の技術〕[Conventional technology]

従来、この種の磁気テープ記録媒体におけるファイル記
憶域の管理方式は、分割せずに連続して使用するように
なっていた。Conventionally, the management method for file storage areas in this type of magnetic tape recording medium has been to use them continuously without dividing them.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上述した従来のファイル記憶域の管理方式は。 The traditional file storage management methods mentioned above are:

記憶域を先頭から順に使用しなければならないため、一
つの記憶媒体に複数のファイルを記憶する場合、媒体上
の途中から始まるファイルへの位置付けは、途中のファ
イルも読込まなけらばならないという欠点があり、また
、更新等により必要とする記憶容量が変化する場合、そ
れ以降のファイルを全て再記憶させなければならないと
いう欠点があり、さらに、記憶媒体に不良が発生した場
合、一部分であっても記憶媒体全体を廃棄しなければな
らないという欠点がある。Since storage areas must be used in order from the beginning, when storing multiple files on one storage medium, positioning a file starting from the middle of the medium has the disadvantage that files in the middle must also be read. However, if the required storage capacity changes due to an update, etc., all subsequent files must be re-stored.Furthermore, if the storage medium becomes defective, even if only a portion of it is The disadvantage is that the entire storage medium must be discarded.

〔問題点を解決するための手段〕[Means for solving problems]

本発明の磁気テープ記憶媒体におけるファイル記憶域の
管理方式は、 磁気テープ記憶媒体が番地付けされた記憶域に分割され
、ラベル部が、各記憶域の使用状況を記憶する第１の記
憶部と、識別子と記憶域の番地を記憶する第２の記憶部
を含み、 ラベル部を初期化する初期化手段と、 磁気テープ記憶媒体に新たな記憶域を割り付ける場合に
、ラベル部の第１の記憶部を参照して未使用記憶域を得
る第１の参照手段と、 磁気テープ記憶媒体の記憶域を解放する場合に、ラベル
部の第２の記憶部を参照して該記憶域の番地を得る第２
の参照手段と、 磁気テープ記憶媒体に新たに記憶域を割り付ける場合に
、第１の参照手段により未使用記憶域を得、該記憶域の
番地と識別子を対にしてラベル部の第２の記憶部に登録
する登録手段と、磁気テープ記録媒体の新たな記憶域の
割り付けや解放に伴なう記憶域の割り付け状況を反映す
るために、ラベル部の第１の記憶部を更新する第１の更
新手段と、 磁気テープ記憶媒体の新たな記憶域の割り付け解放に伴
なう記憶域の番地の変更を反映するために、ラベル部の
第２の記憶部を更新する第２の更新手段を有する。The file storage management method in a magnetic tape storage medium of the present invention is such that the magnetic tape storage medium is divided into addressable storage areas, and the label section serves as a first storage section that stores the usage status of each storage area. , an initialization means for initializing the label section, and a first storage section for the label section when allocating a new storage area to the magnetic tape storage medium. a first reference means for obtaining an unused storage area by referring to a second storage area of the label part, when releasing a storage area of the magnetic tape storage medium, obtaining an address of the storage area by referring to a second storage area of the label part; Second
When a new storage area is allocated to a magnetic tape storage medium, an unused storage area is obtained by the first reference means, and the address and identifier of the storage area are paired and stored in a second storage area of the label section. a first storage unit that updates the first storage unit of the label unit in order to reflect the allocation status of storage areas associated with the allocation and release of new storage areas of the magnetic tape recording medium; and a second updating means for updating the second storage section of the label section to reflect a change in the address of the storage area due to deallocation of a new storage area of the magnetic tape storage medium. .

このように、磁気テープ記憶媒体を番地付けされた記憶
域に分割し、識別子（ファイル識別）といっしょにファ
イルの記憶番地をラベル部に列記しておき、記憶域を任
意のファイルに対し任意の場所から任意の大きさで割り
付けることにより。In this way, the magnetic tape storage medium is divided into addressable storage areas, and the storage addresses of the files are listed together with the identifier (file identification) on the label section. By allocating from location to arbitrary size.

記憶域が連続していなくても記憶できる。Can be stored even if the storage area is not contiguous.

〔実施例〕〔Example〕

次に、本発明の実施例について図面を参照して説明する
。Next, embodiments of the present invention will be described with reference to the drawings.

第１図は本発明の、磁気テープ記憶媒体における記憶域
の管理方式の一実施例を示す図である。FIG. 1 is a diagram showing an embodiment of a storage area management method in a magnetic tape storage medium according to the present invention.

磁気テープ記憶媒体ｌはラベル部りと記憶域’ｌ　＋’
２　＋’３　＋Ｎａ　＋ＭＳ　＋・・・からなり、ラベ
ル部りは記憶域’ｌ　＋’２　＋Ｍ３　ｓＭ４　＋ＭＳ
　ｍ・・・の使用状態を記憶する記憶部Ｌｌ　とファイ
ル識別名と記憶域Ｍｌ　ｅＭ２　＋Ｍ３　＋Ｎａ　＋Ｍ
Ｓ　＋・・・の番地とを記憶する記憶部Ｌ２とからなる
。The magnetic tape storage medium l has a label section and a storage area 'l +'
2 +'3 +Na +MS +..., and the label part is the storage area 'l +'2 +M3 sM4 +MS
A storage section Ll that stores the usage status of m..., a file identification name, and a storage area Ml eM2 +M3 +Na +M
and a storage section L2 that stores the addresses of S + . . .

初期化手段２は磁気テープ記憶媒体１上のラベル部りを
初期化し、これにより記憶部Ｌ１は分割された記憶域に
ｌ　、ｘ２＋Ｍ３　＊Ｍ４　ｍＭＳ　＋・・・が全て未
使用として登録され、記憶部Ｌ２が何も登録されていな
い状態となる。参照手段３は、磁気テープ記録媒体１に
新たな記憶域を割り付ける場合に、ラベル部りの第１の
記憶部Ｌ１を参照して未使用記憶域を得る。参照手段６
は、磁気テープ記憶媒体１の記憶域を解放する場合にラ
ベル部りの第２の記憶部Ｌ２を参照して該記憶域の番地
を得る。The initializing means 2 initializes the label section on the magnetic tape storage medium 1, and thereby the storage section L1 registers all of l, x2+M3*M4 mMS+... in the divided storage areas as unused, and stores them. Section L2 enters a state in which nothing is registered. When allocating a new storage area to the magnetic tape recording medium 1, the reference means 3 refers to the first storage area L1 in the label section to obtain an unused storage area. Reference means 6
When releasing a storage area of the magnetic tape storage medium 1, the second storage area L2 in the label section is referred to to obtain the address of the storage area.

登録手段５は、磁気テープ記憶媒体１に新たに記憶域を
割り付ける場合に、参照手段３により未使用記憶域を得
、該記憶域の番地とファイル識別名を対にしてラベル部
りの第２の記憶部Ｌ２に登録する。更新手段４は、磁気
テープ記憶媒体１の新たな記憶域の割り付けや解放に伴
なう記憶域の割り付け状況を反映するために、ラベル部
りの第１の記憶部Ｌ１を更新する。更新手段７は、磁気
テープ記憶媒体１の新たな記憶域の割り付け解放に伴な
う記憶域の番地の変更を反映するために。When allocating a new storage area to the magnetic tape storage medium 1, the registration means 5 obtains an unused storage area using the reference means 3, pairs the address of the storage area and the file identification name, and stores the second storage area in the label section. It is registered in the storage unit L2. The updating means 4 updates the first storage section L1 in the label section in order to reflect the allocation status of the storage area accompanying the allocation and release of a new storage area of the magnetic tape storage medium 1. The updating means 7 is used to reflect a change in the address of a storage area due to deallocation of a new storage area of the magnetic tape storage medium 1.

ラベル部りの第２の記憶部Ｌ２を更新する。The second storage section L2 containing the label section is updated.

次に、本実施例の動作を説明する。Next, the operation of this embodiment will be explained.

（１）磁気テープ記憶媒体１に記憶域を割り付ける場合 記憶するのに必要十分な未使用記憶域を参照手段３によ
り得、その記憶域の番地とファイル識別名とを対にして
登録手段５により記憶部Ｌ２に登録する。同時に、更新
手段４により記憶部Ｌｌ中の記憶域の使用状態を未使用
から使用中に変更する。(1) When allocating a storage area to the magnetic tape storage medium 1, an unused storage area necessary and sufficient for storage is obtained by the reference means 3, and the address of the storage area and the file identification name are paired and registered by the registration means 5. Register in storage unit L2. At the same time, the updating means 4 changes the usage status of the storage area in the storage unit Ll from unused to used.

（２）ファイルの記憶容量を増加する場合増加するのに
必要十分な未使用記憶域を参照手段３により得、その記
憶域の番地を更新手段７により記憶部Ｌ２に追加する。(2) When increasing the file storage capacity, the referencing means 3 obtains an unused storage area necessary and sufficient for the increase, and the updating means 7 adds the address of the storage area to the storage section L2.

同時に、更新手段４により記憶部Ｌｌ中の記憶域の使用
状態を未使用から使用中に変更する。At the same time, the updating means 4 changes the usage status of the storage area in the storage unit Ll from unused to used.

（３）ファイルの記憶域を解放する場合そのファイルに
割り付けられている記憶域の番地を参照手段６により得
、更新手段４により記憶部Ｌ１中の記憶域の使用状態を
使用中から未使用に変更する。同時に、更新手段７によ
り記憶部Ｌ２中のファイル識別名と記憶域の番地を消去
する。(3) When releasing the storage area of a file, the reference means 6 obtains the address of the storage area allocated to the file, and the update means 4 changes the usage status of the storage area in the storage unit L1 from in use to unused. change. At the same time, the updating means 7 erases the file identification name and storage area address in the storage section L2.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は、磁気テープ記憶媒体を番
地付けされた記憶域に分割し、ファイル識別名といっし
ょにファイルの記憶番地をラベル部に列記しておき、記
憶域を任意のファイルに対し任意の場所から任意の大き
さで割り付けることにより、記憶域が連続していなくて
も記憶できる効果がある。As explained above, the present invention divides a magnetic tape storage medium into addressable storage areas, lists the storage address of the file along with the file identification name in the label section, and divides the storage area into an arbitrary file. On the other hand, by allocating data from any location to any size, it is possible to store data even if the storage area is not contiguous.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の磁気テープ記憶媒体における記憶域の
管理方式の一実施例を示す図である。 ｌ・・・磁気テープ記憶媒体。 Ｌ・・・ラベル部、 ＭＩ　Ｊ２　Ｊ３９Ｍ４　＊舅５・・・記憶域Ｌ１・・
・記憶域Ｍ皇＊Ｍ２　ｅＭ３　＋Ｎａ　ｅＭｓ　＊・・
・の使用状況を記憶する記憶部。 Ｌ２・・・ファイル識別名と記憶域の番地を記憶する記
憶部、 ２・・・ラベル部りの初期化手段。 ３・・・記憶域の使用状態を記憶する記憶部Ｌ８の参照
手段。 ４・・・記憶域の使用状態を記憶する記憶部Ｌ１の更新
手段、 ５・・・ファイル識別名と記憶域の番地を記憶する記憶
部Ｌ２への登録手段。 ６・・・ファイル識別名と記憶域の番地を記憶する記憶
部Ｌ２の参照手段、 ７・・・ファイル識別名と記憶域の番地を記憶する記憶
部Ｌ２の更新手段。FIG. 1 is a diagram showing an embodiment of a storage area management system in a magnetic tape storage medium of the present invention. l...Magnetic tape storage medium. L...Label section, MI J2 J39M4 *Father 5...Storage area L1...
・Storage area M Emperor *M2 eM3 +Na eMs *...
・A storage unit that stores usage status. L2...Storage unit for storing the file identification name and storage area address; 2...Initialization means for the label unit. 3... Reference means for the storage unit L8 that stores the usage status of the storage area. 4...Updating means for the storage unit L1 that stores the usage state of the storage area; 5...Registering unit in the storage unit L2 that stores the file identification name and the address of the storage area. 6... Reference means of the storage unit L2 that stores the file identification name and the address of the storage area; 7... Update means of the storage unit L2 that stores the file identification name and the address of the storage area.

Claims (1)

【特許請求の範囲】 磁気テープ記憶媒体上に添付された識別子と、この識別
子を読取り、位置決めする機構を有する磁気テープ記憶
装置において、 磁気テープ記憶媒体が番地付けされた記憶域に分割され
、ラベル部が、各記憶域の使用状況を記憶する第１の記
憶部と、識別子と記憶域の番地を記憶する第２の記憶部
を含み、 ラベル部を初期化する初期化手段と、 磁気テープ記憶媒体に新たな記憶域を割り付ける場合に
、ラベル部の第１の記憶部を参照して未使用記憶域を得
る第１の参照手段と、 磁気テープ記憶媒体の記憶域を解放する場合に、ラベル
部の第２の記憶部を参照して該記憶域の番地を得る第２
の参照手段と、 磁気テープ記憶媒体に新たに記憶域を割り付ける場合に
、第１の参照手段により未使用記憶域を得、該記憶域の
番地と識別子を対にしてラベル部の第２の記憶部に登録
する登録手段と、 磁気テープ記憶媒体の新たな記憶域の割り付けや解放に
伴なう記憶域の割り付け状況を反映するために、ラベル
部の第１の記憶部を更新する第１の更新手段と、 磁気テープ記憶媒体の新たな記憶域の割り付け解放に伴
なう記憶域の番地の変更を反映するために、ラベル部の
第２の記憶部を更新する第２の更新手段を有する、磁気
テープ記憶媒体におけるファイル記憶域の管理方式。[Scope of Claim] A magnetic tape storage device having an identifier attached to a magnetic tape storage medium and a mechanism for reading and positioning this identifier, wherein the magnetic tape storage medium is divided into addressable storage areas, and a label is attached to the magnetic tape storage medium. the unit includes a first storage unit that stores the usage status of each storage area, and a second storage unit that stores the identifier and the address of the storage area, initialization means that initializes the label unit, and magnetic tape storage. a first reference means for obtaining an unused storage area by referring to the first storage area of the label section when allocating a new storage area to the medium; a second memory area for obtaining the address of the memory area by referring to the second memory area of the memory area;
When a new storage area is allocated to a magnetic tape storage medium, an unused storage area is obtained by the first reference means, and the address and identifier of the storage area are paired and stored in a second storage area of the label section. a registration means for registering in the label section; and a first register for updating the first storage section of the label section in order to reflect the storage allocation status associated with the allocation and release of new storage areas of the magnetic tape storage medium. and a second updating means for updating the second storage section of the label section to reflect a change in the address of the storage area due to deallocation of a new storage area of the magnetic tape storage medium. , a management method for file storage in magnetic tape storage media.
JP19996885A 1985-09-09 1985-09-09 Control system for file storage area on magnetic tape storage medium Pending JPS6258464A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19996885A JPS6258464A (en) 1985-09-09 1985-09-09 Control system for file storage area on magnetic tape storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19996885A JPS6258464A (en) 1985-09-09 1985-09-09 Control system for file storage area on magnetic tape storage medium

Publications (1)

Publication Number Publication Date
JPS6258464A true JPS6258464A (en) 1987-03-14

Family

ID=16416591

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19996885A Pending JPS6258464A (en) 1985-09-09 1985-09-09 Control system for file storage area on magnetic tape storage medium

Country Status (1)

Country Link
JP (1) JPS6258464A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6256466B1 (en) 1999-03-16 2001-07-03 Kyocera Mita Corporation Developing device capable of preventing toner particles from being accumulated at a front end of a cover member

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6256466B1 (en) 1999-03-16 2001-07-03 Kyocera Mita Corporation Developing device capable of preventing toner particles from being accumulated at a front end of a cover member

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