JPH032472U - - Google Patents
Info
- Publication number
- JPH032472U JPH032472U JP5975189U JP5975189U JPH032472U JP H032472 U JPH032472 U JP H032472U JP 5975189 U JP5975189 U JP 5975189U JP 5975189 U JP5975189 U JP 5975189U JP H032472 U JPH032472 U JP H032472U
- Authority
- JP
- Japan
- Prior art keywords
- write
- position data
- read
- read position
- control 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
- 238000010586 diagram Methods 0.000 description 7
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係る磁気デイスク装
置の構成を示すブロツク図、第２図は実施例装置
にて情報の書込みを行なつた場合の情報書込み位
置を示す図、第３図は実施例装置にて情報の読出
しを行なつた場合の情報読出し位置を示す図、第
４図は従来装置において情報書込み位置がずれな
い例を示す図、第５図は従来装置において情報書
込み位置がずれる例を示す図、第６図は従来装置
において情報書込み位置がずれる例を示す図、第
７図は従来装置において第５図の例と同じ条件で
情報を読み出す例を示す図、第８図は温度条件が
変化しヘツドの位置が著しく移動したときに情報
を読み出す例を示す図である。
１……ＩＤ（書込み・読出し位置データ）比較
回路、２……オフセツト制御回路、３……書込み
制御回路、４……上位制御回路、２０……ヘツド
、２０……ＩＤ部、２２……情報書込み（読出し
）位置。
FIG. 1 is a block diagram showing the configuration of a magnetic disk device according to an embodiment of the present invention, FIG. 2 is a diagram showing the information writing position when information is written in the embodiment device, and FIG. FIG. 4 is a diagram showing an example where the information writing position does not shift in the conventional device; FIG. 5 is a diagram showing the information writing position in the conventional device. FIG. 6 is a diagram showing an example in which the information writing position shifts in a conventional device. FIG. 7 is a diagram showing an example in which information is read out under the same conditions as the example in FIG. 5 in the conventional device. FIG. 8 2 is a diagram showing an example of reading information when the temperature condition changes and the position of the head moves significantly. FIG. DESCRIPTION OF SYMBOLS 1...ID (write/read position data) comparison circuit, 2...Offset control circuit, 3...Write control circuit, 4...Upper control circuit, 20...Head, 20...ID section, 22...Information Write (read) position.
Claims (1)
いて磁気デイスクの書込み・読出し位置データ部
の位置を演算するための書込み・読出し位置デー
タ比較回路と、この書込み・読出し位置データ比
較回路の出力によりヘツドのオフセツト制御を行
なうオフセツト制御回路と、このオフセツト制御
回路によりヘツドを書込み・読出し位置データ部
に位置決めしたときのオフセツトデータに基づき
ヘツドを書込み・読出し位置データ部の位置に保
持して情報の書込みおよび読出しを行なう上位制
御回路とを具備したことを特徴とする磁気デイス
ク装置。 A write/read position data comparison circuit is used to calculate the position of the write/read position data section of the magnetic disk based on the read write/read position data, and the output of this write/read position data comparison circuit is used to calculate the position of the write/read position data section of the magnetic disk. An offset control circuit performs offset control, and this offset control circuit holds the head in the write/read position data area based on the offset data when the head is positioned in the write/read position data area to write and read information. What is claimed is: 1. A magnetic disk device comprising a host control circuit for reading data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5975189U JPH032472U (en) | 1989-05-25 | 1989-05-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5975189U JPH032472U (en) | 1989-05-25 | 1989-05-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH032472U true JPH032472U (en) | 1991-01-11 |
Family
ID=31586525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5975189U Pending JPH032472U (en) | 1989-05-25 | 1989-05-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH032472U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009018598A (en) * | 2007-07-10 | 2009-01-29 | East Japan Railway Co | Device for controlling railroad crossing warning sound of maintenance vehicle |
-
1989
- 1989-05-25 JP JP5975189U patent/JPH032472U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009018598A (en) * | 2007-07-10 | 2009-01-29 | East Japan Railway Co | Device for controlling railroad crossing warning sound of maintenance vehicle |
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