DE3379127D1 - Buried servo recording system having dual transducers - Google Patents

Buried servo recording system having dual transducers

Info

Publication number
DE3379127D1
DE3379127D1 DE8383110921T DE3379127T DE3379127D1 DE 3379127 D1 DE3379127 D1 DE 3379127D1 DE 8383110921 T DE8383110921 T DE 8383110921T DE 3379127 T DE3379127 T DE 3379127T DE 3379127 D1 DE3379127 D1 DE 3379127D1
Authority
DE
Germany
Prior art keywords
recording system
servo recording
buried servo
dual transducers
transducers
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
Application number
DE8383110921T
Other languages
English (en)
Inventor
Hideo Tanaka
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.)
NEC Corp
Original Assignee
NEC 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
Priority claimed from JP19318482A external-priority patent/JPS5982623A/ja
Priority claimed from JP5182583A external-priority patent/JPS59177770A/ja
Application filed by NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE3379127D1 publication Critical patent/DE3379127D1/de
Expired legal-status Critical Current

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
    • G11B5/127—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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3103—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing
    • 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks
    • 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
    • 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
    • G11B5/59633—Servo formatting
    • G11B5/5965—Embedded servo format
DE8383110921T 1982-11-02 1983-11-02 Buried servo recording system having dual transducers Expired DE3379127D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP19318482A JPS5982623A (ja) 1982-11-02 1982-11-02 磁気デイスク装置のトラツク追従サ−ボ方式
JP5182583A JPS59177770A (ja) 1983-03-28 1983-03-28 磁気デイスク装置のトラツク追従サ−ボ方式

Publications (1)

Publication Number Publication Date
DE3379127D1 true DE3379127D1 (en) 1989-03-09

Family

ID=26392406

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383110921T Expired DE3379127D1 (en) 1982-11-02 1983-11-02 Buried servo recording system having dual transducers

Country Status (3)

Country Link
US (1) US4581663A (de)
EP (2) EP0108386B1 (de)
DE (1) DE3379127D1 (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3714986A1 (de) * 1987-05-06 1988-11-17 Thomson Brandt Gmbh Recorder mit spurfuehrung
US5070421A (en) * 1987-09-25 1991-12-03 Fuji Xerox Co., Ltd. Magnetic disk system having tracking control using recorded information
US4962437A (en) * 1988-02-24 1990-10-09 Magnetic Peripherals Inc. Thin film servo head employing the inactive transducer coils to cancel write noise from nearby data heads
EP0330398A3 (de) * 1988-02-24 1991-07-24 Seagate Technology International Magnetischer Lesekopf
US4979051A (en) * 1988-03-22 1990-12-18 Eggebeen James A Bimodal multi-track magnetic head
US4975791A (en) * 1988-03-22 1990-12-04 Carlisle Memory Products Group Incorporated Recording system having head transducers with controlled skew
US5001579A (en) * 1988-05-27 1991-03-19 Eastman Kodak Company Method and apparatus for centering a transducer over a recorded track on a rotary storage medium
US5072322A (en) * 1988-10-17 1991-12-10 National Micronetics, Inc. Monolithic ferrite recording head with glass-protected, self-aligned, machined track
US5285331A (en) * 1989-02-23 1994-02-08 Wangtek Incorporated System for aligning a read head gap over a track of magnetic data
US5223994A (en) * 1989-10-02 1993-06-29 Behr Michael I System using superimposed, orthogonal buried servo signals
US5568331A (en) * 1989-10-27 1996-10-22 Hitachi, Ltd. Method of head positioning and magnetic recording disk drive using the same
US5461528A (en) * 1990-08-27 1995-10-24 Seagate Technology, Inc. Self bucking servo transducer
US5471354A (en) * 1990-08-27 1995-11-28 Seagate Technology, Inc. Servo head with close servo transducer placement for improved passive noise cancellation
EP0484905A3 (en) * 1990-11-09 1994-12-14 Brier Technology Interface for disk drives
NO922249L (no) * 1991-06-07 1992-12-08 Minnesota Mining & Mfg Flerspors servo-opptakshode, resulterende medium som inneholder forhaandsregistrert servospor samt servostyrt hodeposisjoneringssystem
US5229895A (en) * 1991-06-07 1993-07-20 Minnesota Mining And Manufacturing Company Multi-track servo recording head assembly
JPH04366411A (ja) * 1991-06-13 1992-12-18 Ngk Insulators Ltd 薄膜磁気ヘッド
US5319502A (en) * 1992-01-10 1994-06-07 International Business Machines Corporation System and method for employing buried servos within a magnetic recording medium
EP0551570A1 (de) * 1992-01-15 1993-07-21 Wangtek, Inc. System zur Ausrichtung eines Lesekopfspaltes über eine magnetische Datenspur
US5739974A (en) * 1993-03-09 1998-04-14 Hewlett-Packard Company System for calibrating a magnetic tape drive
DE10084256T1 (de) * 1999-02-22 2002-01-31 Seagate Technology Llc Vergrabene Servo-bemusterte Medien

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE640044A (de) * 1962-11-30 1964-03-16
US3614756A (en) * 1970-01-21 1971-10-19 Ibm Magnetic record with servo track perpendicular to information track
US3921217A (en) * 1971-12-27 1975-11-18 Ibm Three-legged magnetic recording head using a magnetorestive element
US3855625A (en) * 1973-12-19 1974-12-17 Ibm Magnetic head slider assembly
US4001890A (en) * 1974-08-05 1977-01-04 Honeywell Information Systems, Inc. Double chip flying head
US3956769A (en) * 1974-08-12 1976-05-11 Control Data Corporation Recording system having coinciding servo and data tracks
US4157576A (en) * 1974-08-17 1979-06-05 Basf Aktiengesellschaft Track-dependent transducer position control in magneto-dynamic storage devices, and a magnetic recording medium to which this method is applicable
US4300177A (en) * 1975-07-17 1981-11-10 U.S. Philips Corporation Thin-film magnetic head for reading and writing information
US4012781A (en) * 1975-08-14 1977-03-15 International Business Machines Corporation Magnetoresistive read head assembly for servo operation
JPS54139711A (en) * 1978-04-21 1979-10-30 Fujitsu Ltd Magnetic head for magnetic apparatus
US4219853A (en) * 1978-12-21 1980-08-26 International Business Machines Corporation Read/write thin film head
US4190872A (en) * 1978-12-21 1980-02-26 International Business Machines Corporation Thin film inductive transducer
JPS55125530A (en) * 1979-03-20 1980-09-27 Mitsubishi Electric Corp Magnetic recorder/reproducer
US4318141A (en) * 1979-12-07 1982-03-02 International Business Machines Corp. Buried servo recording systems and methods
EP0060632B1 (de) * 1981-03-17 1985-09-25 The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Magnetoresistive Dünnfilm-Wandlerköpfe und Verfahren zu deren Herstellung
JPS58115664A (ja) * 1981-12-28 1983-07-09 Seiko Epson Corp 磁気記録再生機構

Also Published As

Publication number Publication date
EP0108386A1 (de) 1984-05-16
US4581663A (en) 1986-04-08
EP0242887A2 (de) 1987-10-28
EP0242887A3 (de) 1988-01-07
EP0108386B1 (de) 1989-02-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition