DE69330256D1 - Plattenspeicher zur kontaktmagnetaufzeichnung mit einem magnetoresistiven lesesensor - Google Patents

Plattenspeicher zur kontaktmagnetaufzeichnung mit einem magnetoresistiven lesesensor

Info

Publication number
DE69330256D1
DE69330256D1 DE69330256T DE69330256T DE69330256D1 DE 69330256 D1 DE69330256 D1 DE 69330256D1 DE 69330256 T DE69330256 T DE 69330256T DE 69330256 T DE69330256 T DE 69330256T DE 69330256 D1 DE69330256 D1 DE 69330256D1
Authority
DE
Germany
Prior art keywords
disk
sensor
modulation
contact
magnetic recording
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 - Fee Related
Application number
DE69330256T
Other languages
English (en)
Other versions
DE69330256T2 (de
Inventor
Musa Dovek
Stuart Foster
K Lam
Erich Sawatzky
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IBM United Kingdom Ltd
HGST Netherlands BV
Original Assignee
International Business Machines Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of DE69330256D1 publication Critical patent/DE69330256D1/de
Application granted granted Critical
Publication of DE69330256T2 publication Critical patent/DE69330256T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition 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
    • G11B5/58Disposition 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
    • G11B5/60Fluid-dynamic spacing of heads from record-carriers
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition 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
    • G11B5/58Disposition 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
    • G11B5/60Fluid-dynamic spacing of heads from record-carriers
    • G11B5/6005Specially adapted for spacing from a rotating disc using a fluid cushion
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/10009Improvement or modification of read or write signals
    • G11B20/10046Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10055Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using partial response filtering when writing the signal to the medium or reading it therefrom
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/10009Improvement or modification of read or write signals
    • G11B20/10046Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10203Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter baseline correction
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/012Recording on, or reproducing or erasing from, magnetic disks
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/027Analogue recording
    • G11B5/035Equalising
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/09Digital recording
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127Structure or manufacture of heads, e.g. inductive
    • G11B5/33Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127Structure or manufacture of heads, e.g. inductive
    • G11B5/33Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
    • G11B5/3903Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition 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
    • G11B5/58Disposition 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B2005/0002Special dispositions or recording techniques
    • G11B2005/0005Arrangements, methods or circuits
    • G11B2005/001Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
    • G11B2005/0013Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation
    • G11B2005/0016Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation of magnetoresistive transducers
DE69330256T 1993-02-18 1993-11-24 Plattenspeicher zur kontaktmagnetaufzeichnung mit einem magnetoresistiven lesesensor Expired - Fee Related DE69330256T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/019,968 US5455730A (en) 1993-02-18 1993-02-18 Contact magnetic recording disk file with a magnetoresistive read sensor
PCT/EP1993/003299 WO1994019793A1 (en) 1993-02-18 1993-11-24 Contact magnetic recording disk file with a magnetoresistive read sensor

Publications (2)

Publication Number Publication Date
DE69330256D1 true DE69330256D1 (de) 2001-06-28
DE69330256T2 DE69330256T2 (de) 2001-10-11

Family

ID=21796052

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69330256T Expired - Fee Related DE69330256T2 (de) 1993-02-18 1993-11-24 Plattenspeicher zur kontaktmagnetaufzeichnung mit einem magnetoresistiven lesesensor

Country Status (20)

Country Link
US (1) US5455730A (de)
EP (1) EP0685103B1 (de)
JP (1) JP2788600B2 (de)
KR (1) KR0140714B1 (de)
CN (1) CN1084507C (de)
AT (1) ATE201524T1 (de)
BG (1) BG61541B1 (de)
BR (1) BR9400133A (de)
CA (1) CA2102087C (de)
CZ (1) CZ290656B6 (de)
DE (1) DE69330256T2 (de)
ES (1) ES2157973T3 (de)
HU (1) HU216673B (de)
MY (1) MY110942A (de)
PH (1) PH31345A (de)
PL (1) PL172763B1 (de)
RU (1) RU2113019C1 (de)
SG (1) SG45210A1 (de)
TW (1) TW396335B (de)
WO (1) WO1994019793A1 (de)

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Also Published As

Publication number Publication date
HUT72801A (en) 1996-05-28
PL310176A1 (en) 1995-11-27
KR940020313A (ko) 1994-09-15
CA2102087A1 (en) 1994-08-19
EP0685103A1 (de) 1995-12-06
ES2157973T3 (es) 2001-09-01
KR0140714B1 (ko) 1998-07-15
EP0685103B1 (de) 2001-05-23
JP2788600B2 (ja) 1998-08-20
JPH06259739A (ja) 1994-09-16
MY110942A (en) 1999-07-31
BG61541B1 (en) 1997-11-28
US5455730A (en) 1995-10-03
ATE201524T1 (de) 2001-06-15
CA2102087C (en) 1998-11-24
RU2113019C1 (ru) 1998-06-10
WO1994019793A1 (en) 1994-09-01
PL172763B1 (pl) 1997-11-28
DE69330256T2 (de) 2001-10-11
CN1084507C (zh) 2002-05-08
TW396335B (en) 2000-07-01
CZ290656B6 (cs) 2002-09-11
PH31345A (en) 1998-07-17
SG45210A1 (en) 1998-01-16
CN1096607A (zh) 1994-12-21
BR9400133A (pt) 1994-10-04
HU9502416D0 (en) 1995-10-30
HU216673B (hu) 1999-08-30
BG99875A (bg) 1996-05-31
CZ9502115A3 (cs) 2002-05-15

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