BR8007948A - Aparelho e metodo de gravacao de sinal de controle subjacente - Google Patents

Aparelho e metodo de gravacao de sinal de controle subjacente

Info

Publication number
BR8007948A
BR8007948A BR8007948A BR8007948A BR8007948A BR 8007948 A BR8007948 A BR 8007948A BR 8007948 A BR8007948 A BR 8007948A BR 8007948 A BR8007948 A BR 8007948A BR 8007948 A BR8007948 A BR 8007948A
Authority
BR
Brazil
Prior art keywords
appliance
control signal
recording method
signal recording
underlying control
Prior art date
Application number
BR8007948A
Other languages
English (en)
Inventor
S Keidl
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 BR8007948A publication Critical patent/BR8007948A/pt

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
    • 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
    • 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
BR8007948A 1979-12-07 1980-12-04 Aparelho e metodo de gravacao de sinal de controle subjacente BR8007948A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/101,379 US4313140A (en) 1979-12-07 1979-12-07 Buried control signal recording systems and method

Publications (1)

Publication Number Publication Date
BR8007948A true BR8007948A (pt) 1981-06-23

Family

ID=22284355

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8007948A BR8007948A (pt) 1979-12-07 1980-12-04 Aparelho e metodo de gravacao de sinal de controle subjacente

Country Status (6)

Country Link
US (1) US4313140A (pt)
EP (1) EP0030256B1 (pt)
JP (1) JPS6049967B2 (pt)
BR (1) BR8007948A (pt)
CA (1) CA1143831A (pt)
DE (1) DE3066613D1 (pt)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4390911A (en) * 1981-04-30 1983-06-28 International Business Machines Corporation Signal separation in magnetic recording using buried servo
EP0093200B1 (en) * 1982-04-29 1989-03-15 International Business Machines Corporation A method for recording data on a magnetic recording medium
US4547817A (en) * 1982-04-29 1985-10-15 International Business Machines Corporation High frequency magnetic recording method
JPS5963005A (ja) * 1982-10-04 1984-04-10 Toshiba Corp 磁気記録方式
JPS6038702A (ja) * 1983-08-09 1985-02-28 Comput Basic Mach Technol Res Assoc 信号再生回路
JPS6074116A (ja) * 1983-09-29 1985-04-26 Hitachi Ltd 磁気記録媒体
US4670800A (en) * 1985-05-03 1987-06-02 Eastman Kodak Company Edge guided magnetic tape tracking
US4611249A (en) * 1985-05-03 1986-09-09 Eastman Kodak Company Flux sensitive tracking
US4652945A (en) * 1985-05-03 1987-03-24 Eastman Kodak Company Flux sensitive tracking
US4980782A (en) * 1985-06-03 1990-12-25 Peter Ginkel Software protection and identification system
US4858036A (en) * 1986-08-04 1989-08-15 Peter Ginkel Software protection and identification system
JPH0772924B2 (ja) * 1985-06-13 1995-08-02 ソニー株式会社 記録方法、記録再生方法、記録装置及び記録再生装置
US5070421A (en) * 1987-09-25 1991-12-03 Fuji Xerox Co., Ltd. Magnetic disk system having tracking control using recorded information
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
JPH0743804B2 (ja) * 1988-03-23 1995-05-15 日本ビクター株式会社 磁気記録装置及び磁気記録再生装置
JPH02232803A (ja) * 1989-03-06 1990-09-14 Nec Corp 磁気ヘッド
US5132861A (en) * 1989-10-02 1992-07-21 Behr Michael I Systems using superimposed, orthogonal buried servo signals
US5223994A (en) * 1989-10-02 1993-06-29 Behr Michael I System using superimposed, orthogonal buried servo signals
US5321570A (en) * 1989-10-02 1994-06-14 Behr Michael I Systems 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
JPH0467303A (ja) * 1990-07-03 1992-03-03 Nec Corp 磁気ディスク装置の書込み読出し回路
JPH05120616A (ja) * 1991-10-25 1993-05-18 Teac Corp デイスク装置
US5319502A (en) * 1992-01-10 1994-06-07 International Business Machines Corporation System and method for employing buried servos within a magnetic recording medium
US6700732B1 (en) * 1993-07-30 2004-03-02 Washington University Method and apparatus for a vernier magnetic recording head
US6025967A (en) * 1993-08-24 2000-02-15 Imation Corp. Method of identifying magnetic tape characteristics
TW331005B (en) * 1995-11-10 1998-05-01 Philips Electronics Nv System, apparatus and method for recording /reproducing information in/form a magnetic medium
JP3447164B2 (ja) * 1995-12-08 2003-09-16 松下電器産業株式会社 磁気記録再生装置
US6456449B1 (en) 1997-08-07 2002-09-24 International Business Machines Corporation Disk drive with wide servo burst pattern and wide servo sensing element
NL1015834C2 (nl) * 2000-07-28 2002-01-29 Onstream B V Werkwijze voor het op verschillende diepte schrijven van informatie in een magnetische band.
US7133233B1 (en) * 2000-10-24 2006-11-07 Maxtor Corporation Disk drive with read while write capability
JP3776797B2 (ja) * 2001-12-28 2006-05-17 株式会社東芝 磁気記録再生装置
US9177598B2 (en) * 2011-11-21 2015-11-03 Marvell International Ltd. Device, method of fabricating a media and method of servo writing
US9685181B2 (en) * 2013-09-02 2017-06-20 Marvell International Ltd. Method of operating a data storage apparatus and data storage apparatus

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE640044A (pt) * 1962-11-30 1964-03-16
US3534344A (en) * 1967-12-21 1970-10-13 Ibm Method and apparatus for recording and detecting information
US3614756A (en) * 1970-01-21 1971-10-19 Ibm Magnetic record with servo track perpendicular to information track
US3821798A (en) * 1972-02-18 1974-06-28 Ibm Resynchronizable recording system
BE794737A (fr) * 1972-02-18 1973-05-16 Ibm Systemes d'enregistrement de signaux digitaux
US3864741A (en) * 1973-06-28 1975-02-04 Ibm Servo channel equalization network
US3864740A (en) * 1973-11-05 1975-02-04 Information Storage Systems Track following servo system
US3845500A (en) * 1973-11-12 1974-10-29 Ibm Head to track alignment in a rotating head magnetic tape unit
US3956769A (en) * 1974-08-12 1976-05-11 Control Data Corporation Recording system having coinciding servo and data tracks
NL7600470A (nl) * 1976-01-17 1977-07-19 Philips Nv Servosysteem voor het sturen van de positie van een magneetkop ten opzichte van een te volgen spoor.

Also Published As

Publication number Publication date
US4313140A (en) 1982-01-26
EP0030256A1 (en) 1981-06-17
EP0030256B1 (en) 1984-02-15
CA1143831A (en) 1983-03-29
JPS6049967B2 (ja) 1985-11-06
DE3066613D1 (en) 1984-03-22
JPS56105306A (en) 1981-08-21

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