JPH0328559U - - Google Patents
Info
- Publication number
- JPH0328559U JPH0328559U JP8727789U JP8727789U JPH0328559U JP H0328559 U JPH0328559 U JP H0328559U JP 8727789 U JP8727789 U JP 8727789U JP 8727789 U JP8727789 U JP 8727789U JP H0328559 U JPH0328559 U JP H0328559U
- Authority
- JP
- Japan
- Prior art keywords
- section
- erase
- processing circuit
- write
- media defect
- 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
- 230000007547 defect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
Description
第１図は本考案の一実施例のブロツク図、第２
図は媒体欠陥の再生出力波形に対する影響を示す
図、第３図ａおよびｂそれぞれ第１図に示す実施
例によるフオーマツト形および再生出力波形を示
す図、第４図ａおよびｂはそれぞれ従来の磁気デ
イスク装置のフオーマツト形式および再生出力波
形を示す図である。
１……インターフエイス回路、２……リード・
ライトコントロール回路、３……欠陥位置演算回
路、４……書込処理回路、５……書込回路、６…
…読出処理回路、７……読出回路、８……コント
ロール回路、９……サーボシーク回路、１０……
サーボヘツド、１１……スピンドルコントロール
回路、１２……スピンドルモータ、１３……デイ
スク板、１４……リード・ライトヘツド。
Figure 1 is a block diagram of one embodiment of the present invention;
3A and 3B are diagrams showing the influence of medium defects on the reproduced output waveform, respectively. FIGS. 3A and 3B are diagrams showing the format and reproduction output waveform according to the embodiment shown in FIG. FIG. 3 is a diagram showing a format of a disk device and a reproduction output waveform. 1...Interface circuit, 2...Lead/
Write control circuit, 3... Defect position calculation circuit, 4... Write processing circuit, 5... Write circuit, 6...
...Read processing circuit, 7... Read circuit, 8... Control circuit, 9... Servo seek circuit, 10...
Servo head, 11... spindle control circuit, 12... spindle motor, 13... disk plate, 14... read/write head.
Claims (1)
ＩＤ部またはその前後ＧＡＰ部に媒体欠陥がある
時は、この媒体欠陥に対応してＤＣイレーズを行
ない、その後段の正常なエリアにＩＤ部を書き込
み命令を発生する書込処理回路と、ＩＤリード時
にＤＣイレーズ部を検出した時にはこのＤＣイレ
ーズ部の通過後にＩＤ部の再読出を命令する読出
処理回路とを含むことを特徴とする磁気デイスク
装置。 In the hard sector mode format, if there is a media defect in the ID section or the GAP section before and after it, DC erase is performed in response to the media defect, and a write operation that generates a command to write the ID section to the normal area in the subsequent stage is performed. A magnetic disk device comprising: a processing circuit; and a read processing circuit which, when a DC erase section is detected during ID reading, instructs to reread the ID section after passing through the DC erase section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8727789U JPH0328559U (en) | 1989-07-24 | 1989-07-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8727789U JPH0328559U (en) | 1989-07-24 | 1989-07-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0328559U true JPH0328559U (en) | 1991-03-22 |
Family
ID=31636929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8727789U Pending JPH0328559U (en) | 1989-07-24 | 1989-07-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0328559U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6977108B2 (en) | 2001-03-22 | 2005-12-20 | Kabushiki Kaisha Toshiba | Recording medium including patterned tracks and isolation regions |
| US9053733B2 (en) | 2010-04-14 | 2015-06-09 | Kabushiki Kaisha Toshiba | Magnetic recording medium with magnetic portions of different orientations and method of manufacturing the same |
-
1989
- 1989-07-24 JP JP8727789U patent/JPH0328559U/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6977108B2 (en) | 2001-03-22 | 2005-12-20 | Kabushiki Kaisha Toshiba | Recording medium including patterned tracks and isolation regions |
| US7115208B2 (en) | 2001-03-22 | 2006-10-03 | Kabushiki Kaisha Toshiba | Method of manufacturing recording medium |
| US7306743B2 (en) | 2001-03-22 | 2007-12-11 | Kabushiki Kaisha Toshiba | Recording medium, method of manufacturing recording medium and recording apparatus |
| US9053733B2 (en) | 2010-04-14 | 2015-06-09 | Kabushiki Kaisha Toshiba | Magnetic recording medium with magnetic portions of different orientations and method of manufacturing the same |
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