NL7702570A - Magneetschijfgeheugen en magneetschijf voor dat geheugen. - Google Patents

Magneetschijfgeheugen en magneetschijf voor dat geheugen.

Info

Publication number
NL7702570A
NL7702570A NL7702570A NL7702570A NL7702570A NL 7702570 A NL7702570 A NL 7702570A NL 7702570 A NL7702570 A NL 7702570A NL 7702570 A NL7702570 A NL 7702570A NL 7702570 A NL7702570 A NL 7702570A
Authority
NL
Netherlands
Prior art keywords
memory
magnetic disk
magnetic
disk
disk memory
Prior art date
Application number
NL7702570A
Other languages
English (en)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Priority to NL7702570A priority Critical patent/NL7702570A/nl
Priority to DE19782808404 priority patent/DE2808404A1/de
Priority to US05/882,273 priority patent/US4163265A/en
Priority to JP2593778A priority patent/JPS53113513A/ja
Priority to FR7806944A priority patent/FR2383496A1/fr
Publication of NL7702570A publication Critical patent/NL7702570A/nl

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
    • G11B5/596—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
    • G11B5/59655—Sector, sample or burst servo format
NL7702570A 1977-03-10 1977-03-10 Magneetschijfgeheugen en magneetschijf voor dat geheugen. NL7702570A (nl)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL7702570A NL7702570A (nl) 1977-03-10 1977-03-10 Magneetschijfgeheugen en magneetschijf voor dat geheugen.
DE19782808404 DE2808404A1 (de) 1977-03-10 1978-02-27 Magnetplattenspeicher und magnetplatte fuer einen solchen speicher
US05/882,273 US4163265A (en) 1977-03-10 1978-02-28 Magnetic disc memory and magnetic disc for this memory
JP2593778A JPS53113513A (en) 1977-03-10 1978-03-07 Magnetic disc memory
FR7806944A FR2383496A1 (fr) 1977-03-10 1978-03-10 Memoire a disque magnetique et disque magnetique pour cette memoire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7702570A NL7702570A (nl) 1977-03-10 1977-03-10 Magneetschijfgeheugen en magneetschijf voor dat geheugen.

Publications (1)

Publication Number Publication Date
NL7702570A true NL7702570A (nl) 1978-09-12

Family

ID=19828139

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7702570A NL7702570A (nl) 1977-03-10 1977-03-10 Magneetschijfgeheugen en magneetschijf voor dat geheugen.

Country Status (5)

Country Link
US (1) US4163265A (nl)
JP (1) JPS53113513A (nl)
DE (1) DE2808404A1 (nl)
FR (1) FR2383496A1 (nl)
NL (1) NL7702570A (nl)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0221740A2 (en) * 1985-11-01 1987-05-13 Advanced Micro Devices, Inc. Servo data demodulators

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0000946A3 (en) * 1977-08-31 1979-03-21 Hewlett-Packard Company Apparatus for controlling the movement of the data head in a moving-head data recording system
DE2748042C2 (de) * 1977-10-26 1983-02-17 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur Auswertung von von Servospuren einer Magnetplatte eines Plattenspeichers gelieferten aus mehreren Schwingungen bestehenden Servosignalen
JPS54119215A (en) * 1978-03-09 1979-09-17 Toshiba Corp Magnetic disc apparatus
FR2439435A1 (fr) * 1978-10-19 1980-05-16 Cii Honeywell Bull Mode d'ecriture d'informations sur un support d'enregistrement magnetique
US4297737A (en) * 1979-12-26 1981-10-27 International Business Machines Corporation Sector servo with sync marks
BR8101049A (pt) * 1980-02-22 1981-08-25 Northern Telecom Inc Sistema servo para posicionar um transdutor de leitura, meio de gravacao para uso no dito sistema, e processo para posicionar um transdutor de leitura/gravacao
US4390912A (en) * 1980-11-12 1983-06-28 Digital Equipment Corporation Transducer positioning system and data disk therefor
US4620253A (en) * 1980-12-31 1986-10-28 International Business Machines Corporation Low mass actuator system for magnetic recording disk
US4405956A (en) * 1981-04-22 1983-09-20 Xerox Corporation Tracking apparatus for read/write head
US4400747A (en) * 1981-06-26 1983-08-23 International Business Machines Corporation Servo system for data storage apparatus
US4414589A (en) * 1981-12-14 1983-11-08 Northern Telecom Inc. Embedded servo track following system and method for writing servo tracks
DE3363006D1 (en) * 1982-02-24 1986-05-22 Toshiba Kk Method and system for detecting the position of and apparatus for positioning a read-write head in seek operation on a disk memory having data and servo sectors
JPS59165279A (ja) * 1983-03-11 1984-09-18 Toshiba Corp ヘツドの位置決め方式
US4504873A (en) * 1983-04-04 1985-03-12 International Business Machines Corporation Identification field scan apparatus
US5027233A (en) * 1983-08-31 1991-06-25 Unisys Corp. Method for determining servo position data in a disk drive
US4685007A (en) * 1983-12-21 1987-08-04 Computer Memories, Incorporated Disk drive with track zero location system
JPH061614B2 (ja) * 1984-02-21 1994-01-05 ソニー株式会社 ディスクの記録再生装置
FR2593633B1 (fr) * 1986-01-27 1988-04-29 Sagem Procede d'ecriture et de lecture d'une piste magnetique, notamment pour l'asservissement positionnel de tetes magnetiques; support magnetique comportant au moins une telle piste; procede d'asservissement positionnel de tetes magnetiques mettant en oeuvre de telles pistes
JPS63144454A (ja) * 1986-12-08 1988-06-16 Alps Electric Co Ltd 情報記録デイスク
JP2628155B2 (ja) * 1987-01-13 1997-07-09 キヤノン電子株式会社 ヘッドトラッキング用サーボパターンを備えた記録媒体
US5177651A (en) * 1987-12-23 1993-01-05 Konica Corporation Magnetic media and servo synchronization method
JP2547608B2 (ja) * 1988-04-12 1996-10-23 キヤノン電子株式会社 ヘッド位置制御方法
JP2646645B2 (ja) * 1988-04-18 1997-08-27 ソニー株式会社 光ディスクの光スポット移動装置
US5418670A (en) * 1991-07-29 1995-05-23 Eastman Kodak Company Magnetic recording medium having a servo pattern of the intermittent type with compensation for suppressing self-generated residual fields
US5400201A (en) * 1993-10-25 1995-03-21 Syquest Technology, Inc. Servo burst pattern for removing offset caused by magnetic distortion and method associated therewith
US5566034A (en) * 1994-06-03 1996-10-15 Quantum Corporation Off-track detection with charge redistribution A/D circuits
US7573666B2 (en) * 2007-10-10 2009-08-11 Esgw Holdings Limited Optimizing storage capacity by smoothly varying track pitch across a disk surface

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3534344A (en) * 1967-12-21 1970-10-13 Ibm Method and apparatus for recording and detecting information
US3812533A (en) * 1972-12-22 1974-05-21 Vermont Res Corp Information storage unit transducer positioning system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0221740A2 (en) * 1985-11-01 1987-05-13 Advanced Micro Devices, Inc. Servo data demodulators
EP0221740A3 (en) * 1985-11-01 1987-11-11 Advanced Micro Devices, Inc. Servo data demodulators

Also Published As

Publication number Publication date
DE2808404A1 (de) 1978-09-14
JPS53113513A (en) 1978-10-04
US4163265A (en) 1979-07-31
FR2383496A1 (fr) 1978-10-06

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Legal Events

Date Code Title Description
BI The patent application has been withdrawn