BG61541B1 - Contact magnetic recording disk device with magnetic resistance sensor for reading - Google Patents

Contact magnetic recording disk device with magnetic resistance sensor for reading Download PDF

Info

Publication number
BG61541B1
BG61541B1 BG99875A BG9987595A BG61541B1 BG 61541 B1 BG61541 B1 BG 61541B1 BG 99875 A BG99875 A BG 99875A BG 9987595 A BG9987595 A BG 9987595A BG 61541 B1 BG61541 B1 BG 61541B1
Authority
BG
Bulgaria
Prior art keywords
disk
head
carrier
sensor
signal
Prior art date
Application number
BG99875A
Other languages
Bulgarian (bg)
English (en)
Other versions
BG99875A (bg
Inventor
Moris Musa Dovek
John Stuart Foster
Donald K F Lam
Erich Sawatzky
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of BG99875A publication Critical patent/BG99875A/bg
Publication of BG61541B1 publication Critical patent/BG61541B1/bg

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
    • 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
    • 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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10055—Improvement 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
    • 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
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10203—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter baseline correction
    • 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
    • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
    • 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/027—Analogue recording
    • G11B5/035—Equalising
    • 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/09—Digital recording
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39—Structure 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
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39—Structure 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
    • G11B5/3903—Structure 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
    • 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
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/001—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
    • G11B2005/0013—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation
    • G11B2005/0016—Controlling 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
BG99875A 1993-02-18 1995-08-18 Contact magnetic recording disk device with magnetic resistance sensor for reading BG61541B1 (en)

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
BG99875A BG99875A (bg) 1996-05-31
BG61541B1 true BG61541B1 (en) 1997-11-28

Family

ID=21796052

Family Applications (1)

Application Number Title Priority Date Filing Date
BG99875A BG61541B1 (en) 1993-02-18 1995-08-18 Contact magnetic recording disk device with magnetic resistance sensor for reading

Country Status (20)

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

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Also Published As

Publication number Publication date
EP0685103A1 (en) 1995-12-06
KR0140714B1 (ko) 1998-07-15
EP0685103B1 (en) 2001-05-23
DE69330256T2 (de) 2001-10-11
PH31345A (en) 1998-07-17
HUT72801A (en) 1996-05-28
ATE201524T1 (de) 2001-06-15
HU216673B (hu) 1999-08-30
PL310176A1 (en) 1995-11-27
BR9400133A (pt) 1994-10-04
JPH06259739A (ja) 1994-09-16
MY110942A (en) 1999-07-31
TW396335B (en) 2000-07-01
RU2113019C1 (ru) 1998-06-10
DE69330256D1 (de) 2001-06-28
CN1084507C (zh) 2002-05-08
CZ9502115A3 (cs) 2002-05-15
CA2102087A1 (en) 1994-08-19
PL172763B1 (pl) 1997-11-28
JP2788600B2 (ja) 1998-08-20
CA2102087C (en) 1998-11-24
US5455730A (en) 1995-10-03
CZ290656B6 (cs) 2002-09-11
WO1994019793A1 (en) 1994-09-01
BG99875A (bg) 1996-05-31
ES2157973T3 (es) 2001-09-01
CN1096607A (zh) 1994-12-21
HU9502416D0 (en) 1995-10-30
KR940020313A (ko) 1994-09-15
SG45210A1 (en) 1998-01-16

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