JPH0250863U - - Google Patents
Info
- Publication number
- JPH0250863U JPH0250863U JP11133089U JP11133089U JPH0250863U JP H0250863 U JPH0250863 U JP H0250863U JP 11133089 U JP11133089 U JP 11133089U JP 11133089 U JP11133089 U JP 11133089U JP H0250863 U JPH0250863 U JP H0250863U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- memory medium
- magnetic memory
- signal
- magnetic head
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Rotational Drive Of Disk (AREA)
Description
第１図は磁気デイスク記憶装置の構成の一例を
示す説明図、第２図ａ，ｂは磁気ヘツドが加圧さ
れるのを制御する従来の制御機構の一例を示すブ
ロツク図とその信号のタイミングチヤート、第３
図はこの考案の一実施例を示すブロツク図とその
信号のタイミングチヤートである。
図において１は磁気デイスク、２はモータ、３
は磁気ヘツド、７はばね、８は電磁石、９はトラ
ンスジユーサ、１０はワンシヨツトマルチ、１１
はアンド回路、１３はフリツプフロツプ、１４は
カウンタである。なお各図中同一符号は同一また
は相当する部分を示すものとする。
Fig. 1 is an explanatory diagram showing an example of the configuration of a magnetic disk storage device, and Figs. 2 a and b are block diagrams showing an example of a conventional control mechanism that controls pressurization of a magnetic head, and the timing of its signals. Chaat, 3rd
The figure is a block diagram showing an embodiment of this invention and a timing chart of its signals. In the figure, 1 is a magnetic disk, 2 is a motor, and 3
is a magnetic head, 7 is a spring, 8 is an electromagnet, 9 is a transducer, 10 is a one shot multi, 11
1 is an AND circuit, 13 is a flip-flop, and 14 is a counter. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
メモリ媒体の面に向かつて加圧され上記磁気メモ
リ媒体の回転が所定回転数以下のときは上記磁気
ヘツドが上記磁気メモリ媒体の面から離脱するよ
うに制御される磁気記憶装置において、上記磁気
メモリ媒体が回転して所定の角度位置を通過する
ごとにパルス信号を発生する手段と、上記パルス
信号の後端から所定の時間継続する矩形波信号を
発生する手段と、上記パルス信号と上記矩形波信
号との論理積信号を出力するアンド回路と、この
アンド回路の出力信号を計数するカウンタと、こ
のカウンタの計数値があらかじめ設定された値に
達したときに磁気ヘツドが加圧されるように制御
する制御機構とを備えたことを特徴とする磁気記
憶装置。 The magnetic head is pressurized toward the surface of the magnetic memory medium during steady rotation of the magnetic memory medium, and when the rotation of the magnetic memory medium is less than a predetermined number of rotations, the magnetic head is detached from the surface of the magnetic memory medium. In the controlled magnetic storage device, means for generating a pulse signal each time the magnetic memory medium rotates and passes a predetermined angular position, and generating a rectangular wave signal that continues for a predetermined time from the rear end of the pulse signal. an AND circuit that outputs an AND signal of the pulse signal and the rectangular wave signal, a counter that counts the output signal of the AND circuit, and a count value of the counter that reaches a preset value. What is claimed is: 1. A magnetic storage device comprising: a control mechanism for controlling the magnetic head so that the magnetic head is sometimes pressurized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11133089U JPH0345327Y2 (en) | 1989-09-21 | 1989-09-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11133089U JPH0345327Y2 (en) | 1989-09-21 | 1989-09-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0250863U true JPH0250863U (en) | 1990-04-10 |
| JPH0345327Y2 JPH0345327Y2 (en) | 1991-09-25 |
Family
ID=31349278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11133089U Expired JPH0345327Y2 (en) | 1989-09-21 | 1989-09-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0345327Y2 (en) |
-
1989
- 1989-09-21 JP JP11133089U patent/JPH0345327Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0345327Y2 (en) | 1991-09-25 |
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