IT1051882B - Memoria a dischi magnetici - Google Patents

Memoria a dischi magnetici

Info

Publication number
IT1051882B
IT1051882B IT30675/75A IT3067575A IT1051882B IT 1051882 B IT1051882 B IT 1051882B IT 30675/75 A IT30675/75 A IT 30675/75A IT 3067575 A IT3067575 A IT 3067575A IT 1051882 B IT1051882 B IT 1051882B
Authority
IT
Italy
Prior art keywords
magnetic disk
disk memory
memory
magnetic
disk
Prior art date
Application number
IT30675/75A
Other languages
English (en)
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
Application granted granted Critical
Publication of IT1051882B publication Critical patent/IT1051882B/it

Links

Classifications

    • 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
    • G11B5/48—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
IT30675/75A 1975-01-31 1975-12-23 Memoria a dischi magnetici IT1051882B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US54606675A 1975-01-31 1975-01-31

Publications (1)

Publication Number Publication Date
IT1051882B true IT1051882B (it) 1981-05-20

Family

ID=24178721

Family Applications (1)

Application Number Title Priority Date Filing Date
IT30675/75A IT1051882B (it) 1975-01-31 1975-12-23 Memoria a dischi magnetici

Country Status (6)

Country Link
US (1) US4152736A (it)
JP (1) JPS5856169B2 (it)
DE (1) DE2601448A1 (it)
FR (1) FR2299694A1 (it)
GB (1) GB1533322A (it)
IT (1) IT1051882B (it)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5379333A (en) * 1976-12-24 1978-07-13 Hitachi Ltd Memory unit
JPS5835769A (ja) * 1981-08-24 1983-03-02 Hitachi Ltd 磁気デイスク装置
JPS58115664A (ja) * 1981-12-28 1983-07-09 Seiko Epson Corp 磁気記録再生機構
DE3325353A1 (de) * 1983-07-14 1985-01-24 Honeywell Gmbh Positionssensor
AU576947B2 (en) * 1985-03-08 1988-09-08 Sony Corporation Combination magnetic transducer head
US4701815A (en) * 1985-03-11 1987-10-20 Sony Corporation Tracking servo system for disc memory
JPH0668893B2 (ja) * 1986-01-23 1994-08-31 日本電信電話株式会社 磁気ヘツドの位置決め制御方式
JP2548426B2 (ja) * 1989-06-02 1996-10-30 松下電器産業株式会社 信号記録／再生装置
US6700732B1 (en) * 1993-07-30 2004-03-02 Washington University Method and apparatus for a vernier magnetic recording head
US5488525A (en) * 1994-08-18 1996-01-30 International Business Machines Corporation Decoupled magnetic head assembly for quarter-inch tape
US5946156A (en) * 1997-03-04 1999-08-31 Imation Corp. Tape servo system and methods, write/read heads, and servo track configurations regarding same
US6195230B1 (en) * 1998-04-27 2001-02-27 Intel Corporation Disk head assembly with multiple read and/or write transducers for improved performance
US6330123B1 (en) 1999-05-28 2001-12-11 Imation Corp. Head assembly having a single pass servo writer
US7724458B2 (en) * 2004-08-09 2010-05-25 Jasim Saleh Al-Azzawi Hard disk drive with selectable reading and writing to/from different platter surfaces
US20080253016A1 (en) * 2005-07-13 2008-10-16 Konstantinos Pyykko For Digital Information Adapted Memory Arrangement
US9070406B1 (en) 2014-03-10 2015-06-30 Western Digital Technologies, Inc. Disk drive configuring one-dimensional and two-dimensional recording areas based on read element spacing
US9245556B2 (en) * 2014-03-10 2016-01-26 Western Digital Technologies, Inc. Disk drive employing multiple read elements to increase radial band for two-dimensional magnetic recording
US9601154B2 (en) 2014-11-24 2017-03-21 Seagate Technology Llc Prioritized random access for magnetic recording
US9747942B2 (en) 2014-11-24 2017-08-29 Seagate Technology Llc Variable written track widths for attribute-based storage
US9773517B2 (en) 2014-11-24 2017-09-26 Seagate Technology Llc Dual writer head design
US9728206B2 (en) 2014-11-24 2017-08-08 Seagate Technology Llc Interlaced magnetic recording
US9842047B2 (en) 2014-11-24 2017-12-12 Seagate Technology Llc Non-sequential write for sequential read back
US9818445B2 (en) 2016-01-12 2017-11-14 Seagate Technology Llc Magnetic storage device readers
US10210891B1 (en) 2016-01-28 2019-02-19 Seagate Technology Llc Dual writer head design utilizing two writers of different sizes for writing interlaced data tracks
US9805741B1 (en) 2016-01-29 2017-10-31 Seagate Technology Llc Write current parameter selection for magnetic recording
US9805744B1 (en) 2016-04-01 2017-10-31 Seagate Technology Llc Dual writer design in interlaced magnetic recording
US10199066B1 (en) 2018-03-01 2019-02-05 Seagate Technology Llc Write management of physically coupled storage areas

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263031A (en) * 1962-05-29 1966-07-26 Sperry Rand Corp High-low frequency homing
FR1597741A (it) * 1968-12-09 1970-06-29
US3781490A (en) * 1973-06-01 1973-12-25 Ibm Web tension and speed control in a reel-to-reel web transport

Also Published As

Publication number Publication date
FR2299694A1 (fr) 1976-08-27
US4152736A (en) 1979-05-01
JPS5856169B2 (ja) 1983-12-13
FR2299694B1 (it) 1978-05-12
JPS5190807A (it) 1976-08-09
GB1533322A (en) 1978-11-22
DE2601448A1 (de) 1976-08-05

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