DD234518C4 - Verfahren zur fehlersignalermittlung in einem magnetplattenspeicher - Google Patents
Verfahren zur fehlersignalermittlung in einem magnetplattenspeicher Download PDFInfo
- Publication number
- DD234518C4 DD234518C4 DD85276423A DD27642385A DD234518C4 DD 234518 C4 DD234518 C4 DD 234518C4 DD 85276423 A DD85276423 A DD 85276423A DD 27642385 A DD27642385 A DD 27642385A DD 234518 C4 DD234518 C4 DD 234518C4
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- track
- test
- read
- pulses
- tracks
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 29
- 238000001514 detection method Methods 0.000 title claims description 9
- 230000015654 memory Effects 0.000 title description 5
- 238000012360 testing method Methods 0.000 claims description 95
- 238000012937 correction Methods 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims 1
- 238000012935 Averaging Methods 0.000 description 6
- 239000003550 marker Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/30—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture with provision for auxiliary signals
- G11B23/36—Signals on record carriers or on containers and recorded by the same method as the main recording
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1816—Testing
- G11B20/182—Testing using test patterns
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
- G11B5/59627—Aligning for runout, eccentricity or offset compensation
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843418526 DE3418526A1 (de) | 1984-05-18 | 1984-05-18 | Verfahren und anordnung zur fehlersignalermittlung in einem magnetplattenspeicher und testmagnetplatte dafuer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DD234518A5 DD234518A5 (de) | 1986-04-02 |
| DD234518C4 true DD234518C4 (de) | 1987-01-28 |
Family
ID=6236233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD85276423A DD234518C4 (de) | 1984-05-18 | 1985-05-16 | Verfahren zur fehlersignalermittlung in einem magnetplattenspeicher |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4623942A (ja) |
| EP (1) | EP0162407B1 (ja) |
| JP (1) | JPH0756739B2 (ja) |
| KR (1) | KR940000636B1 (ja) |
| AU (1) | AU576859B2 (ja) |
| DD (1) | DD234518C4 (ja) |
| DE (2) | DE3418526A1 (ja) |
| HK (1) | HK62289A (ja) |
| HU (1) | HU193370B (ja) |
| SG (1) | SG34789G (ja) |
| ZA (1) | ZA853730B (ja) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4916562A (en) * | 1985-10-31 | 1990-04-10 | Brother Kogyo Kabushiki Kaisha | Magnetic disk storage equipment |
| JPS62234221A (ja) * | 1986-04-04 | 1987-10-14 | Hitachi Ltd | 磁気デイスク駆動装置のトラツキング調整装置 |
| US4992893A (en) * | 1986-02-19 | 1991-02-12 | Hitachi, Ltd. | Alignment disk for magnetic disk driving apparatus and method and apparatus for verifying tracking error of the magnetic disk driving apparatus |
| JPS62192023A (ja) * | 1986-02-19 | 1987-08-22 | Hitachi Ltd | 磁気デイスク駆動装置用アライメントデイスク |
| US4686470A (en) * | 1986-03-12 | 1987-08-11 | Verbatim Corporation | Magnetic disk for measuring the azimuth of a transducer head |
| JPS63173282A (ja) * | 1987-01-13 | 1988-07-16 | Nec Corp | トラツク追従制御方式 |
| JPS6421772A (en) * | 1987-07-17 | 1989-01-25 | Oki Electric Ind Co Ltd | Head positioning system |
| JPH01178131A (ja) * | 1988-01-05 | 1989-07-14 | Nec Corp | 光ディスク装置 |
| US4939599A (en) * | 1988-02-22 | 1990-07-03 | International Business Machines Corporation | Method and apparatus for measuring dynamic track misregistration |
| US5654841A (en) * | 1995-07-07 | 1997-08-05 | Seagate Technology, Inc. | Detection of mechanical defects in a disc drive using injected test signals |
| DE69632336T2 (de) * | 1995-11-13 | 2005-05-25 | Quantum Corp., Milpitas | Kopfschwenkmechanismus für antriebe |
| US6449686B1 (en) * | 1997-03-06 | 2002-09-10 | Micron Technology, Inc. | Method and apparatus for determining removable magnetic media types in a computer after detection of a read error condition |
| US6980381B2 (en) * | 1998-09-21 | 2005-12-27 | William F. Gray | Apparatus and method for predicting failure of a disk drive |
| US6249887B1 (en) | 1998-09-21 | 2001-06-19 | William G. Gray | Apparatus and method for predicting failure of a disk drive |
| US6604211B1 (en) * | 1999-08-31 | 2003-08-05 | Seagate Technology Llc | Tool for initiating and analyzing error recovery procedures in data storage devices |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2554083C2 (de) * | 1975-12-02 | 1985-03-28 | Basf Ag, 6700 Ludwigshafen | Magnetplatte, insbesondere flexible Magnetplatte, zur Einstellung und Kontrolle eines Aufzeichnungs- und/oder Wiedergabegeräts |
| IT1166458B (it) * | 1980-03-11 | 1987-05-06 | Olivetti Tecnost Spa | Metodo e dispositivo per collaudare unita per il trattamento di dische magnetici |
| DE3117911A1 (de) * | 1981-05-06 | 1982-11-25 | Siemens AG, 1000 Berlin und 8000 München | Sich relativ zu einem abtastkopf bewegendes datenspeichermedium fuer testzwecke (testkoerper), verfahren zum ausrichten des abtastkopfes mittels des testkoerpers und verfahren zu seiner herstellung |
| US4542428A (en) * | 1982-10-01 | 1985-09-17 | Matsushita Electric Industrial Co., Ltd. | Disk for measuring off-track quantity of magnetic head, and measuring apparatus using the disk |
| US4513331A (en) * | 1982-10-12 | 1985-04-23 | Dysan Corporation | Method and apparatus for disk drive alignment |
-
1984
- 1984-05-18 DE DE19843418526 patent/DE3418526A1/de not_active Withdrawn
-
1985
- 1985-05-14 DE DE8585105938T patent/DE3567549D1/de not_active Expired
- 1985-05-14 EP EP85105938A patent/EP0162407B1/de not_active Expired
- 1985-05-15 US US06/734,182 patent/US4623942A/en not_active Expired - Lifetime
- 1985-05-16 DD DD85276423A patent/DD234518C4/de unknown
- 1985-05-17 JP JP60104120A patent/JPH0756739B2/ja not_active Expired - Lifetime
- 1985-05-17 KR KR1019850003397A patent/KR940000636B1/ko not_active IP Right Cessation
- 1985-05-17 AU AU42684/85A patent/AU576859B2/en not_active Ceased
- 1985-05-17 HU HU851873A patent/HU193370B/hu unknown
- 1985-05-17 ZA ZA853730A patent/ZA853730B/xx unknown
-
1989
- 1989-05-27 SG SG347/89A patent/SG34789G/en unknown
- 1989-08-03 HK HK622/89A patent/HK62289A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA853730B (en) | 1986-01-29 |
| EP0162407A1 (de) | 1985-11-27 |
| JPH0756739B2 (ja) | 1995-06-14 |
| KR940000636B1 (ko) | 1994-01-26 |
| AU4268485A (en) | 1985-11-21 |
| US4623942A (en) | 1986-11-18 |
| EP0162407B1 (de) | 1989-01-11 |
| AU576859B2 (en) | 1988-09-08 |
| KR850008733A (ko) | 1985-12-21 |
| JPS60256993A (ja) | 1985-12-18 |
| DE3418526A1 (de) | 1985-11-21 |
| DD234518A5 (de) | 1986-04-02 |
| SG34789G (en) | 1989-12-22 |
| HU193370B (en) | 1987-09-28 |
| HK62289A (en) | 1989-08-11 |
| DE3567549D1 (en) | 1989-02-16 |
| HUT38176A (en) | 1986-04-28 |
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