SG34789G - Method and device for determining error signals in a disc drive and test magnetic disc therefor - Google Patents
Method and device for determining error signals in a disc drive and test magnetic disc thereforInfo
- Publication number
- SG34789G SG34789G SG347/89A SG34789A SG34789G SG 34789 G SG34789 G SG 34789G SG 347/89 A SG347/89 A SG 347/89A SG 34789 A SG34789 A SG 34789A SG 34789 G SG34789 G SG 34789G
- Authority
- SG
- Singapore
- Prior art keywords
- error signals
- therefor
- test magnetic
- determining error
- disc
- Prior art date
Links
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
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 (1)
Publication Number | Publication Date |
---|---|
SG34789G true SG34789G (en) | 1989-12-22 |
Family
ID=6236233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SG347/89A SG34789G (en) | 1984-05-18 | 1989-05-27 | Method and device for determining error signals in a disc drive and test magnetic disc therefor |
Country Status (11)
Country | Link |
---|---|
US (1) | US4623942A (hu) |
EP (1) | EP0162407B1 (hu) |
JP (1) | JPH0756739B2 (hu) |
KR (1) | KR940000636B1 (hu) |
AU (1) | AU576859B2 (hu) |
DD (1) | DD234518C4 (hu) |
DE (2) | DE3418526A1 (hu) |
HK (1) | HK62289A (hu) |
HU (1) | HU193370B (hu) |
SG (1) | SG34789G (hu) |
ZA (1) | ZA853730B (hu) |
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 |
HU193370B (en) | 1987-09-28 |
HK62289A (en) | 1989-08-11 |
DE3567549D1 (en) | 1989-02-16 |
HUT38176A (en) | 1986-04-28 |
DD234518C4 (de) | 1987-01-28 |
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