JPS6428567U - - Google Patents
Info
- Publication number
- JPS6428567U JPS6428567U JP12352487U JP12352487U JPS6428567U JP S6428567 U JPS6428567 U JP S6428567U JP 12352487 U JP12352487 U JP 12352487U JP 12352487 U JP12352487 U JP 12352487U JP S6428567 U JPS6428567 U JP S6428567U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic head
- time
- magnetic disk
- detected
- write
- 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
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Moving Of The Head To Find And Align With The Track (AREA)
Description
第１図は本考案の実施例による磁気デイスク装
置の構成を示す概略図、第２図は本実施例の構成
を説明するためのタイムチヤート、第３図は本実
施例の動作を説明するためのフローチヤートであ
る。
１……磁気ヘツド、４……磁気デイスク、５…
…制御装置（制御手段）、Ｄｓ……サーボデータ
、Ｐ１〜Ｐ３……インデツクスパルス、ｔ……計
時時間。
FIG. 1 is a schematic diagram showing the configuration of a magnetic disk device according to an embodiment of the present invention, FIG. 2 is a time chart for explaining the configuration of this embodiment, and FIG. 3 is a diagram for explaining the operation of this embodiment. This is a flowchart. 1...Magnetic head, 4...Magnetic disk, 5...
...Control device (control means), Ds...Servo data, P1-P3...Index pulse, t...Time measurement.
Claims (1)
デイスク１回転毎に発生するインデツクスパルス
を基準として磁気ヘツドにより検出し、該検出し
たサーボデータに基づき前記磁気ヘツドの位置決
め制御を行うように構成した磁気デイスク装置に
おいて、 前記磁気ヘツドが前記インデツクスパルスを検
出した時点から前記サーボデータの先頭を検出し
た時点までの時間を計時し、該計時時間が予め定
めた範囲内の場合は前記磁気ヘツドによる書込み
又は読出し動作を許可すると共に、前記計時時間
が前記範囲を超えた場合は前記磁気ヘツドによる
書込み又は読出し動作を禁止する制御手段を具備
してなる磁気デイスク装置。[Claims for Utility Model Registration] Servo data written on a magnetic disk is detected by a magnetic head based on an index pulse generated every rotation of the magnetic disk, and the magnetic head is positioned based on the detected servo data. In a magnetic disk device configured to perform control, the time from the time when the magnetic head detects the index pulse to the time when the beginning of the servo data is detected, and the time is within a predetermined range. A magnetic disk device comprising: a control means that permits the write or read operation by the magnetic head in the case of the write operation, and prohibits the write or read operation by the magnetic head when the measured time exceeds the range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12352487U JPS6428567U (en) | 1987-08-12 | 1987-08-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12352487U JPS6428567U (en) | 1987-08-12 | 1987-08-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6428567U true JPS6428567U (en) | 1989-02-20 |
Family
ID=31372455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12352487U Pending JPS6428567U (en) | 1987-08-12 | 1987-08-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6428567U (en) |
-
1987
- 1987-08-12 JP JP12352487U patent/JPS6428567U/ja active Pending
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