JPS6340868U - - Google Patents
Info
- Publication number
- JPS6340868U JPS6340868U JP13497486U JP13497486U JPS6340868U JP S6340868 U JPS6340868 U JP S6340868U JP 13497486 U JP13497486 U JP 13497486U JP 13497486 U JP13497486 U JP 13497486U JP S6340868 U JPS6340868 U JP S6340868U
- Authority
- JP
- Japan
- Prior art keywords
- head
- detection means
- normal position
- shielding plate
- circuit
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Moving Of The Head To Find And Align With The Track (AREA)
Description
第１図は本考案の一実施例によるセンサ５の出
力回路の電気回路図、第２図は本考案の一実施例
のヘツドの位置設定回路の電気回路図、第３図は
ヘツドの位置設定について磁気デイスクとヘツド
の位置関係を示す図、第４図と第５図は遮光板４
と２組のセンサ相互の出力の関係を示すグラフ、
第６図は先行技術の電気的構成を示すブロツク図
である。
１……標準磁気デイスク、２……ヘツド、３…
…案内部材、４……遮光板、５，６……検出手段
、１１……コンパレータ回路、１２……駆動回路
、１３……モータ。
Fig. 1 is an electric circuit diagram of the output circuit of the sensor 5 according to an embodiment of the present invention, Fig. 2 is an electric circuit diagram of a head position setting circuit according to an embodiment of the present invention, and Fig. 3 is an electric circuit diagram of the head position setting circuit according to an embodiment of the present invention. Figures 4 and 5 show the positional relationship between the magnetic disk and the head.
and a graph showing the relationship between the outputs of the two sets of sensors,
FIG. 6 is a block diagram showing the electrical configuration of the prior art. 1...Standard magnetic disk, 2...Head, 3...
...Guide member, 4... Light shielding plate, 5, 6... Detection means, 11... Comparator circuit, 12... Drive circuit, 13... Motor.
Claims (1)
半径方向に変位可能な磁気ヘツドに固着され、磁
気ヘツドに連動して変位可能な遮光板と、 予め定められるヘツドの正規位置からの偏差量
を上記遮光板の変位量として検出する一対の検出
手段と、 検出手段の出力レベルを比較し、レベル弁別す
る比較回路と、 比較回路の出力に応答して上記ヘツドを予め定
められたヘツドの正規位置へ駆動する駆動回路と
から成るヘツドの位置設定回路であつて、 少なくとも一方の検出手段の出力端子には固定
抵抗と可変抵抗の並列回路による負荷抵抗が接続
され、 上記可変抵抗は上記検出手段の出力レベルを、
予め定められるヘツドの正規位置からの偏差量に
対応して可変に設定可能であり、 上記設定レベルに対応してヘツドを正規位置に
駆動することを特徴とするヘツドの位置設定回路
。[Scope of Claim for Utility Model Registration] A light-shielding plate fixed to a radially displaceable magnetic head of a magnetic disk mounted on a magnetic disk device and movable in conjunction with the magnetic head, and a predetermined normal position of the head. a pair of detection means for detecting the amount of deviation from the light-shielding plate as the amount of displacement of the light shielding plate; a comparison circuit for comparing the output levels of the detection means and discriminating the level; A head position setting circuit comprising a drive circuit for driving the head to its normal position, wherein at least one of the detection means has a load resistance connected to an output terminal of a parallel circuit of a fixed resistor and a variable resistor, and the variable resistor is the output level of the above detection means,
What is claimed is: 1. A head position setting circuit that can be variably set in accordance with the amount of deviation from a predetermined normal position of the head, and that drives the head to the normal position in accordance with the setting level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13497486U JPS6340868U (en) | 1986-09-03 | 1986-09-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13497486U JPS6340868U (en) | 1986-09-03 | 1986-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6340868U true JPS6340868U (en) | 1988-03-17 |
Family
ID=31036718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13497486U Pending JPS6340868U (en) | 1986-09-03 | 1986-09-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6340868U (en) |
-
1986
- 1986-09-03 JP JP13497486U patent/JPS6340868U/ja active Pending
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