JPH052841A - System for accessing disk storing device - Google Patents
System for accessing disk storing deviceInfo
- Publication number
- JPH052841A JPH052841A JP15268891A JP15268891A JPH052841A JP H052841 A JPH052841 A JP H052841A JP 15268891 A JP15268891 A JP 15268891A JP 15268891 A JP15268891 A JP 15268891A JP H052841 A JPH052841 A JP H052841A
- Authority
- JP
- Japan
- Prior art keywords
- disk
- data
- face
- reading
- writing
- 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
Links
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はメモリ用ディスクへのデ
ータの書き込み及びディスクからのデータの読み出しを
行う際のディスク記憶装置アクセス方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk storage device access system for writing data to a memory disk and reading data from the disk.
【０００２】[0002]
【従来の技術】従来のこの種のディスク記憶装置アクセ
ス方式では、ある一つのデータに対する記憶箇所が１箇
所であるので、ディスクからそのデータの読み出しを行
う際に、一つのヘッドでその１箇所の記憶箇所へのアク
セスしか行えない。2. Description of the Related Art In the conventional disk storage device access system of this type, since there is only one storage location for a certain data, one head needs to store that data when reading the data from the disk. Can only access memory locations.
【０００３】[0003]
【発明が解決しようとする課題】この従来のディスク記
憶装置アクセス方式では、一つのデータに対して記憶箇
所が１箇所だけであるため、データセクタの破壊によっ
てデータが消失した場合、そのデータの読み出しができ
なくなってしまうという問題点がある。In this conventional disk storage device access method, since there is only one storage location for each data, when the data is lost due to the destruction of the data sector, that data is read out. There is a problem that you can not do.
【０００４】[0004]
【課題を解決するための手段】本発明のディスク記憶装
置アクセス方式は、ディスク記憶装置のメモリ用のディ
スクの表裏の各面にアクセス用のヘッドを設け、前記デ
ィスクへのデータ書き込み時に表裏両面へ書き込み、前
記ディスクからのデータ読み出し時に一方の面で読み出
しエラーが発生した場合には他方の面から読み出すよう
にしてある。According to the disk storage device access method of the present invention, an access head is provided on each of the front and back surfaces of a disk for memory of the disk storage device so that data can be written to the front and back surfaces of the disk. When a writing error occurs on one side when writing and reading data from the disc, the other side is read.
【０００５】[0005]
【実施例】次に本発明について図面を参照して説明す
る。The present invention will be described below with reference to the drawings.
【０００６】図１は本発明の一実施例の構造図である。
同図に示すようにディスク１の表裏の各面用にそれぞれ
ヘッド２を設け、ディスク１にデータを書き込む際は、
この二つのヘッド２を使用して、ディスク１の両面にそ
れぞれ同一のデータを書き込む。FIG. 1 is a structural diagram of an embodiment of the present invention.
As shown in FIG. 1, heads 2 are provided for the front and back surfaces of the disk 1, and when writing data to the disk 1,
The two heads 2 are used to write the same data on both sides of the disk 1.
【０００７】図２は本実施例をデータ読み出し処理を表
す流れ図である。ディスク記憶装置において、ディスク
１の表面からデータ読み出している際（Ｓ２１）に、デ
ータの読み出しが正常に行われた場合は、裏面のデータ
の読み出し（Ｓ２３）を行わずに次の処理に移る。セク
タ破壊などのために読み出しエラーが発生した場合（Ｓ
２２）、裏面のデータを読み出すこと（Ｓ２３）によっ
て、ディスク１からのデータの読み出しを可能にする。FIG. 2 is a flow chart showing the data reading process of this embodiment. In the disk storage device, when the data is normally read while the data is being read from the front surface of the disk 1 (S21), the next process is skipped without reading the back surface data (S23). If a read error occurs due to sector destruction (S
22) By reading the data on the back surface (S23), the data can be read from the disk 1.
【０００８】[0008]
【発明の効果】以上説明したように本発明によれば、デ
ィスクにデータを書き込む際に、ディスクの表裏の各面
用のヘッドによって、ディスクの両面に同一の内容を書
き込み、データとデータの記憶箇所とを１対２に対応さ
せることができる。ディスクからデータを読み出す際
に、表面で読み出しエラーが発生した場合には裏面から
アクセスすることにより、ディスクの信頼性を向上でき
る。As described above, according to the present invention, when writing data on a disc, the heads for the front and back sides of the disc write the same contents on both sides of the disc to store the data and the data. It is possible to make one-to-two correspondence with the locations. When data is read from the disc, the reliability of the disc can be improved by accessing from the back side when a read error occurs on the front side.
【図１】本発明の実施例の構造図。FIG. 1 is a structural diagram of an embodiment of the present invention.
【図２】本発明の実施例の読み出し処理の流れ図。FIG. 2 is a flowchart of read processing according to the embodiment of this invention.
１ ディスク ２ ヘッド 1 disk 2 heads
Claims (1)
の表裏の各面にアクセス用のヘッドを設け、前記ディス
クへのデータ書き込み時に表裏両面へ書き込み、前記デ
ィスクからのデータ読み出し時に一方の面で読み出しエ
ラーが発生した場合には他方の面から読み出すようにし
てあることを特徴とするディスク記憶装置アクセス方
式。Claim: What is claimed is: 1. A head for access is provided on each of the front and back surfaces of a disk for memory of a disk storage device, and when writing data to the disk, both front and back sides are written, and data is read from the disk. A disk storage device access method characterized in that when a read error occurs on one side, the other side is read.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15268891A JPH052841A (en) | 1991-06-25 | 1991-06-25 | System for accessing disk storing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15268891A JPH052841A (en) | 1991-06-25 | 1991-06-25 | System for accessing disk storing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH052841A true JPH052841A (en) | 1993-01-08 |
Family
ID=15545960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15268891A Pending JPH052841A (en) | 1991-06-25 | 1991-06-25 | System for accessing disk storing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH052841A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6523397B1 (en) | 1999-02-08 | 2003-02-25 | Nichigo Shoji Co., Ltd. | Curing characteristics measuring apparatus and measuring method |
-
1991
- 1991-06-25 JP JP15268891A patent/JPH052841A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6523397B1 (en) | 1999-02-08 | 2003-02-25 | Nichigo Shoji Co., Ltd. | Curing characteristics measuring apparatus and measuring method |
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