DE3573344D1 - Apparatus for analyzing the interface between a recording disk and a read-write head - Google Patents
Apparatus for analyzing the interface between a recording disk and a read-write headInfo
- Publication number
- DE3573344D1 DE3573344D1 DE8585105546T DE3573344T DE3573344D1 DE 3573344 D1 DE3573344 D1 DE 3573344D1 DE 8585105546 T DE8585105546 T DE 8585105546T DE 3573344 T DE3573344 T DE 3573344T DE 3573344 D1 DE3573344 D1 DE 3573344D1
- Authority
- DE
- Germany
- Prior art keywords
- analyzing
- read
- interface
- write head
- recording disk
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/10—Indicating arrangements; Warning arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/34—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring roughness or irregularity of surfaces
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/32—Maintaining desired spacing between record carrier and head, e.g. by fluid-dynamic spacing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/16—Supporting the heads; Supporting the sockets for plug-in heads
- G11B21/20—Supporting the heads; Supporting the sockets for plug-in heads while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier
- G11B21/21—Supporting the heads; Supporting the sockets for plug-in heads while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier with provision for maintaining desired spacing of head from record carrier, e.g. fluid-dynamic spacing, slider
-
- 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
- G11B23/0014—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 record carriers not specifically of filamentary or web form
- G11B23/0021—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 record carriers not specifically of filamentary or web form discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
- G11B33/08—Insulation or absorption of undesired vibrations or sounds
-
- 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
- G11B5/488—Disposition of heads
- G11B5/4886—Disposition of heads relative to rotating disc
-
- 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
- G11B5/60—Fluid-dynamic spacing of heads from record-carriers
- G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
-
- 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
- G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
- G11B5/82—Disk carriers
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/615,638 US4532802A (en) | 1984-05-31 | 1984-05-31 | Apparatus for analyzing the interface between a recording disk and a read-write head |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3573344D1 true DE3573344D1 (en) | 1989-11-02 |
Family
ID=24466231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8585105546T Expired DE3573344D1 (en) | 1984-05-31 | 1985-05-07 | Apparatus for analyzing the interface between a recording disk and a read-write head |
Country Status (4)
Country | Link |
---|---|
US (1) | US4532802A (de) |
EP (1) | EP0163171B1 (de) |
JP (1) | JPS60263381A (de) |
DE (1) | DE3573344D1 (de) |
Families Citing this family (73)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61222077A (ja) * | 1985-03-14 | 1986-10-02 | Fujitsu Ltd | 磁気ヘツド浮上性の評価方法 |
US4702101A (en) * | 1985-08-12 | 1987-10-27 | Proquip, Inc. | Apparatus and method for testing the calibration of a hard disk substrate tester |
US4635139A (en) * | 1985-08-26 | 1987-01-06 | International Business Machines Corporation | Asperity burst writer |
NL8502635A (nl) * | 1985-09-27 | 1987-04-16 | Philips Nv | Inrichting voor het uitlezen van informatie op een registratiedrager. |
DE3604653A1 (de) * | 1986-02-14 | 1987-08-27 | Optimol Instr Gmbh | Vorrichtung zur untersuchung des verhaltens kontraformer kontakte |
DE3669060D1 (de) * | 1986-04-04 | 1990-03-22 | Ibm Deutschland | Arbeitsueberwachungsverfahren einer kopfplattentrennflaeche und geraet zum verhindern von datenverlusten infolge von kopfplatteninterferenzen. |
JPS62250570A (ja) * | 1986-04-22 | 1987-10-31 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | 記憶装置用変換器 |
JPH0833997B2 (ja) * | 1987-04-23 | 1996-03-29 | 日立電子エンジニアリング株式会社 | 圧電素子の断線検出回路 |
US4942609A (en) * | 1989-03-15 | 1990-07-17 | Magnetic Peripherals Inc. | Electronic flying integrity tester for disk drives |
US5168412A (en) * | 1989-06-28 | 1992-12-01 | Toan Doan | Surface interference detector |
US5021906A (en) * | 1989-10-31 | 1991-06-04 | International Business Machines Corporation | Programmable air bearing slider including magnetic read/write element |
JP3030574B2 (ja) * | 1990-08-16 | 2000-04-10 | キヤノン株式会社 | 微小変位型情報検知探針素子及びこれを用いた走査型トンネル顕微鏡、原子間力顕微鏡、情報処理装置 |
JPH06208771A (ja) * | 1991-09-12 | 1994-07-26 | Internatl Business Mach Corp <Ibm> | スライダ及びこのスライダを用いたデイスク記録装置 |
US5488857A (en) * | 1991-11-22 | 1996-02-06 | Hitachi Electronic Engineering Co., Ltd. | Protrusion sensor for sensing protrusion on a disc |
US5339702A (en) * | 1992-12-24 | 1994-08-23 | Read-Rite Corporation | Test fixture for air bearing magnetic head suspension assembly |
US5527110A (en) * | 1993-04-30 | 1996-06-18 | International Business Machines Corporation | Method and apparatus for detecting asperities on magnetic disks using thermal proximity imaging |
US5810477A (en) * | 1993-04-30 | 1998-09-22 | International Business Machines Corporation | System for identifying surface conditions of a moving medium |
US6088176A (en) * | 1993-04-30 | 2000-07-11 | International Business Machines Corporation | Method and apparatus for separating magnetic and thermal components from an MR read signal |
US5450747A (en) * | 1993-12-27 | 1995-09-19 | International Business Machines Corporation | Method for optimizing piezoelectric surface asperity detection sensor |
JP3063022B2 (ja) * | 1994-09-12 | 2000-07-12 | ホーヤ株式会社 | 表面凹凸検出方法及びその装置並びに磁気ディスク検査方法 |
US5539592A (en) * | 1994-10-05 | 1996-07-23 | International Business Machines Corporation | System and method for monitoring friction between head and disk to predict head disk interaction failure in direct access storage devices |
US5528922A (en) * | 1994-12-27 | 1996-06-25 | International Business Machines Corporation | Method of making disk bumps with laser pulses for calibrating PZT sliders |
CN1086043C (zh) * | 1995-01-09 | 2002-06-05 | 西加特技术有限责任公司 | 克服磁盘驱动器中磁头与磁盘间静摩擦的方法和磁盘驱动器 |
US5545989A (en) * | 1995-01-19 | 1996-08-13 | Conner Peripherals, Inc. | Non-destructive in-situ landing velocity determination of magnetic rigid disk drives using back EMF from the spindle motor during shutdown |
US6032262A (en) * | 1995-04-18 | 2000-02-29 | Emc Corporation | Disk drive reliability determination system and method |
US5739972A (en) * | 1996-01-02 | 1998-04-14 | Ibm | Method and apparatus for positioning a magnetoresistive head using thermal response to servo information on the record medium |
US5751510A (en) * | 1996-01-02 | 1998-05-12 | International Business Machines Corporation | Method and apparatus for restoring a thermal response signal of a magnetoresistive head |
US5872676A (en) * | 1996-01-02 | 1999-02-16 | International Business Machines Corporation | Method and apparatus for positioning a dual element magnetoresistive head using thermal signals |
US5689064A (en) * | 1996-02-01 | 1997-11-18 | Kennedy; Leo Eugene | Glide head assembly and method therefor |
US5901001A (en) * | 1996-02-20 | 1999-05-04 | Seagate Technology, Inc. | Detection of asperities in recording surface of storage medium |
US6262572B1 (en) * | 1996-07-25 | 2001-07-17 | Seagate Technology Llc | Thermo-resistive glide test head for disc drive recording media |
US5864241A (en) * | 1996-08-08 | 1999-01-26 | International Business Machines Corporation | Magnetic transducer with wear indicator in a magnetic data storage system |
US5753803A (en) * | 1996-11-21 | 1998-05-19 | International Business Machines Corporation | Apparatus and methods for maintaining a substantially constant temperature in a thermal proximity sensor |
US5864054A (en) * | 1997-01-08 | 1999-01-26 | Microglide, Inc. | Glide head assembly and test device utilizing the same |
JPH10214408A (ja) * | 1997-01-31 | 1998-08-11 | Toshiba Corp | 磁気ヘッドアセンブリ及び同磁気ヘッドアセンブリを備えた磁気ディスク装置 |
US5880587A (en) * | 1997-02-03 | 1999-03-09 | International Business Machines Corporation | Method and apparatus for performing in file slider take-off measurements through tuned external AE detection |
KR100231887B1 (ko) * | 1997-02-20 | 1999-12-01 | 윤문수 | 고주파 자기특성 측정시스템 |
US5915271A (en) * | 1997-03-14 | 1999-06-22 | Seagate Techology, Inc. | Head/disc force transducer |
US6046871A (en) * | 1997-03-31 | 2000-04-04 | Seagate Technology, Inc. | Magnetic recording head slider with piezoelectric sensor for measuring slider to disc interference levels |
US5963396A (en) | 1997-04-02 | 1999-10-05 | Marburg Technology, Inc. | Glide head with an outside active rail |
US6611401B1 (en) | 1997-04-02 | 2003-08-26 | Marburg Technology, Inc. | Glide head with a transverse contact rail |
US6071007A (en) * | 1997-05-21 | 2000-06-06 | Seagate Technology, Inc. | Thermal asperity detection head |
US5929326A (en) * | 1997-05-22 | 1999-07-27 | International Business Machines Corporation | Glide sensor integrated suspension |
US6239936B1 (en) | 1997-08-19 | 2001-05-29 | International Business Machines Corporation | Method and apparatus for calibrating a thermal response of a magnetoresistive element |
US6226767B1 (en) * | 1997-12-05 | 2001-05-01 | Seagate Technology Llc | Disc media glide test head |
US6000282A (en) * | 1998-02-17 | 1999-12-14 | Seagate Technology, Inc. | System and method for uniform frequency response independent of slider contact location in glide tests |
US6003364A (en) * | 1998-03-19 | 1999-12-21 | Seagate Technology, Inc. | Glide head for testing a disc surface |
US6899456B2 (en) * | 1998-04-16 | 2005-05-31 | Seagate Technology Llc | Glide head for asperity detection |
US6094973A (en) * | 1998-08-11 | 2000-08-01 | Seagate Technology, Inc. | Method and apparatus for mechanical screening of magnetic recording disk drives |
US6073486A (en) * | 1998-08-14 | 2000-06-13 | Microglide Inc. | Piezoelectric glide head |
US6164118A (en) * | 1998-09-30 | 2000-12-26 | Komag Incorporated | Calibration disk having discrete bands of calibration bumps |
US7411752B2 (en) * | 1999-02-22 | 2008-08-12 | Seagate Technology Llc | Head vibration detection device and method |
US6785072B1 (en) | 1999-07-23 | 2004-08-31 | Seagate Technology Llc | Disc drive stiction/friction characterization utilizing piezoelectric microactuators |
US6290573B1 (en) | 1999-08-23 | 2001-09-18 | Komag, Incorporated | Tape burnish with monitoring device |
US6570391B2 (en) | 2000-03-31 | 2003-05-27 | Seagate Technology Llc | Cartridge screening method with pin-point capabilities on the causes of defects |
US6717764B2 (en) | 2000-06-02 | 2004-04-06 | Seagate Technology Llc | Method and apparatus for head fly height measurement |
JP3601780B2 (ja) * | 2000-10-03 | 2004-12-15 | 日立金属株式会社 | 磁気ディスク用グライドヘッド |
US7007141B2 (en) * | 2001-01-30 | 2006-02-28 | Data Domain, Inc. | Archival data storage system and method |
JP3917409B2 (ja) * | 2001-11-16 | 2007-05-23 | 富士通株式会社 | ヘッドスライダ及びディスク装置 |
US7003597B2 (en) * | 2003-07-09 | 2006-02-21 | International Business Machines Corporation | Dynamic reallocation of data stored in buffers based on packet size |
US7312941B2 (en) * | 2003-09-17 | 2007-12-25 | Hitachi Global Storage Technologies Netherlands B.V. | Disk drive with head-disk interaction sensor integrated with suspension |
US6958871B2 (en) * | 2003-09-17 | 2005-10-25 | Hitachi Global Storage Technologies Netherlands B.V. | Head-disk interaction sensor integrated with suspension |
US7852582B2 (en) * | 2007-11-21 | 2010-12-14 | Nokia Corporation | Method for determining wear of a data storage medium and data storage device |
US7952829B2 (en) * | 2008-09-24 | 2011-05-31 | Seagate Technology Llc | Detecting contact between a slider and a data storage medium without a separate contact-detection voltage source |
US9343082B2 (en) * | 2010-03-30 | 2016-05-17 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Systems and methods for detecting head contact |
US8499652B1 (en) | 2010-04-21 | 2013-08-06 | Western Digital Technologies, Inc. | Test ramp for testing microactuators used in a multi-head disk drive |
US8089719B1 (en) | 2010-06-01 | 2012-01-03 | Western Digital Technologies, Inc. | Finding touchdown frequency for a head in a disk drive |
US8300348B1 (en) | 2010-06-25 | 2012-10-30 | Western Digital Technologies, Inc. | Disk drive detecting disk boundaries using microactuator |
US8861126B1 (en) | 2011-09-20 | 2014-10-14 | Western Digital Technologies, Inc. | Disk drive detecting when head is on ramp |
US8786976B1 (en) | 2011-09-20 | 2014-07-22 | Western Digital Technologies, Inc. | Disk drive detecting when head is on ramp |
US9064537B1 (en) | 2013-09-13 | 2015-06-23 | Western Digital Technologies, Inc. | Disk drive measuring radial offset between heads by detecting a difference between ramp contact |
US9355666B1 (en) | 2013-09-30 | 2016-05-31 | Western Digital Technologies, Inc. | Disk drive measuring stroke difference between heads by detecting a difference between ramp contact |
US9841457B1 (en) * | 2016-11-01 | 2017-12-12 | Nhk Spring Co., Ltd. | Pseudo flexure for disk drive and method of testing electronic circuit for disk drive |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3683273A (en) * | 1970-02-27 | 1972-08-08 | Burroughs Corp | Method and apparatus for measuring fluid film bearings |
GB1302941A (de) * | 1970-03-23 | 1973-01-10 | ||
US3614579A (en) * | 1970-09-24 | 1971-10-19 | Rca Corp | Squeeze film bearing servosystem |
JPS4975182A (de) * | 1972-11-20 | 1974-07-19 | ||
US3842663A (en) * | 1972-12-01 | 1974-10-22 | Boeing Co | Demodulated resonance analysis system |
US4080636A (en) * | 1976-03-19 | 1978-03-21 | Ampex Corporation | System for damping vibrations in a deflectable transducer |
US4504871A (en) * | 1980-01-08 | 1985-03-12 | Verbatim Corporation | Magnetic media test fixture apparatus |
US4416144A (en) * | 1982-04-21 | 1983-11-22 | Sperry Corporation | Apparatus for evaluating slider flying dynamics |
US4422322A (en) * | 1982-04-27 | 1983-12-27 | Spangler Elson B | Method and system for measurement of road profile |
EG18108A (en) * | 1985-04-29 | 1992-08-30 | Goodrich Co B F | Stabilized vinyl halide resin and composition and articles made therefrom |
-
1984
- 1984-05-31 US US06/615,638 patent/US4532802A/en not_active Expired - Lifetime
-
1985
- 1985-02-20 JP JP60030656A patent/JPS60263381A/ja active Granted
- 1985-05-07 DE DE8585105546T patent/DE3573344D1/de not_active Expired
- 1985-05-07 EP EP85105546A patent/EP0163171B1/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US4532802A (en) | 1985-08-06 |
JPS60263381A (ja) | 1985-12-26 |
EP0163171A1 (de) | 1985-12-04 |
EP0163171B1 (de) | 1989-09-27 |
JPH0363151B2 (de) | 1991-09-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |