IT1064185B - Apparecchiatura di memorizzazione - Google Patents

Apparecchiatura di memorizzazione

Info

Publication number
IT1064185B
IT1064185B IT21455/76A IT2145576A IT1064185B IT 1064185 B IT1064185 B IT 1064185B IT 21455/76 A IT21455/76 A IT 21455/76A IT 2145576 A IT2145576 A IT 2145576A IT 1064185 B IT1064185 B IT 1064185B
Authority
IT
Italy
Prior art keywords
storage equipment
equipment
storage
Prior art date
Application number
IT21455/76A
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 IT1064185B publication Critical patent/IT1064185B/it

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
    • G11B5/54—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 into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk 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
    • 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
    • G11B5/59688—Servo signal format patterns or signal processing thereof, e.g. dual, tri, quad, burst signal patterns
IT21455/76A 1975-05-15 1976-03-23 Apparecchiatura di memorizzazione IT1064185B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20490/75A GB1503971A (en) 1975-05-15 1975-05-15 Positioning system for data storage apparatus

Publications (1)

Publication Number Publication Date
IT1064185B true IT1064185B (it) 1985-02-18

Family

ID=10146754

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21455/76A IT1064185B (it) 1975-05-15 1976-03-23 Apparecchiatura di memorizzazione

Country Status (17)

Country Link
US (1) US4068269A (it)
JP (1) JPS524209A (it)
AR (1) AR223952A1 (it)
AT (1) AT360253B (it)
AU (1) AU502216B2 (it)
BE (1) BE840207A (it)
BR (1) BR7603098A (it)
CA (1) CA1078512A (it)
CH (1) CH609797A5 (it)
DE (1) DE2612111C2 (it)
ES (1) ES447960A1 (it)
FR (1) FR2311374A1 (it)
GB (1) GB1503971A (it)
IT (1) IT1064185B (it)
NL (1) NL175558C (it)
SE (1) SE411806B (it)
ZA (1) ZA76615B (it)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1520350A (en) * 1976-12-22 1978-08-09 Ibm Data storage apparatus
US4096534A (en) * 1977-04-12 1978-06-20 International Business Machines Corporation Track accessing circuitry for a disk file with switchable filter
US4202019A (en) * 1978-02-24 1980-05-06 Sperry Rand Corporation Timing circuit and method for a track following servo in a data storage system
US4208679A (en) * 1978-02-28 1980-06-17 Digital Equipment Corporation Transducer positioning system for rotating disk drive units
JPS54119215A (en) * 1978-03-09 1979-09-17 Toshiba Corp Magnetic disc apparatus
JPS5564662A (en) * 1978-11-08 1980-05-15 Toshiba Corp Self-compensator for magnetic disk memory unit
JPS5564661A (en) * 1978-11-08 1980-05-15 Toshiba Corp Self-compensator for magnetic disk memory unit
JPS56134361A (en) * 1980-03-26 1981-10-21 Toshiba Corp Position signal generating circuit for magnetic disk device
JPS56157506A (en) * 1980-05-09 1981-12-04 Fujitsu Ltd Positioning device
US4333117A (en) * 1980-06-30 1982-06-01 Magnetic Peripherals Inc. Disc head arm position controller using digital velocity sensing
US4390912A (en) * 1980-11-12 1983-06-28 Digital Equipment Corporation Transducer positioning system and data disk therefor
US4390910A (en) * 1981-01-30 1983-06-28 Ball Corporation Phase-lock oscillator
JPS57189376A (en) * 1981-05-15 1982-11-20 Toshiba Corp Magnetic disc device
JPS58199471A (ja) * 1982-05-17 1983-11-19 Toshiba Corp 磁気ディスク装置の磁気ヘッド速度制御装置
US4575776A (en) * 1982-12-20 1986-03-11 International Business Machines Corporation Magnetic recording disk file servo control system including an actuator model for generating a simulated head position error signal
US4535372A (en) * 1983-06-29 1985-08-13 Storage Technology Corporation Position tracking servo control systems and methods
EP0141499A1 (en) * 1983-08-31 1985-05-15 Memorex Corporation Disk drive servo techniques
US5027233A (en) * 1983-08-31 1991-06-25 Unisys Corp. Method for determining servo position data in a disk drive
EP0299084B1 (en) * 1987-01-27 1993-11-10 Fujitsu Limited Circuitry and method for controlling positioning of a head in a data storage device
KR910008503B1 (ko) * 1987-03-13 1991-10-18 미쯔비시덴끼 가부시끼가이샤 광 디스크
JPS6443879A (en) * 1987-08-06 1989-02-16 Ibm Method and apparatus for control of positioning of head
US4949201A (en) * 1988-04-01 1990-08-14 Micropolis Corporation Disk drive head position controller with static bias compensation and plural velocity detectors
US5111349A (en) * 1989-02-07 1992-05-05 Alps Electric (Usa), Inc. Digital servo system for moving body by a distance equal to an integral multiple of a predetermined pitch
JPH0373476A (ja) * 1989-05-17 1991-03-28 Mitsubishi Electric Corp 記録装置
JPH02308424A (ja) * 1989-05-24 1990-12-21 Sony Corp ピットパターンの検出方法
EP0494869B1 (en) * 1989-07-27 1996-09-04 Conner Peripherals, Inc. Disk drive system using multiple embedded quadrature servo fields
US5182682A (en) * 1989-09-29 1993-01-26 Seagate Technology, Inc. Sectored servo disk formatting
US5305302A (en) * 1990-12-04 1994-04-19 Conner Peripherals, Inc. Track format and record carrier system for split data field support
US5257149A (en) * 1991-02-13 1993-10-26 Seagate Technology, Inc. Disc drive with offset address field
KR100223633B1 (ko) * 1996-12-31 1999-10-15 윤종용 하드 디스크 드라이브에서 헤드속도 측정을 이용한 안정 기록방법

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034111A (en) * 1958-11-24 1962-05-08 Ibm Data storage system
US3427606A (en) * 1966-03-02 1969-02-11 Ibm Memory system
US3534344A (en) * 1967-12-21 1970-10-13 Ibm Method and apparatus for recording and detecting information
US3691543A (en) * 1971-02-08 1972-09-12 Ibm Positioning system including servo track configuration and associated demodulator
GB1396834A (en) * 1973-01-31 1975-06-04 Ibm Data storage apparatus

Also Published As

Publication number Publication date
AR223952A1 (es) 1981-10-15
JPS5520301B2 (it) 1980-06-02
NL175558C (nl) 1984-11-16
BR7603098A (pt) 1977-01-25
AU1401676A (en) 1977-12-01
AU502216B2 (en) 1979-07-19
ATA209176A (de) 1980-05-15
DE2612111A1 (de) 1976-11-18
JPS524209A (en) 1977-01-13
NL175558B (nl) 1984-06-18
CH609797A5 (it) 1979-03-15
BE840207A (fr) 1976-07-16
FR2311374B1 (it) 1979-07-13
GB1503971A (en) 1978-03-15
ZA76615B (en) 1977-09-28
FR2311374A1 (fr) 1976-12-10
NL7604314A (nl) 1976-11-17
ES447960A1 (es) 1977-07-01
SE7604390L (sv) 1976-11-16
SE411806B (sv) 1980-02-04
CA1078512A (en) 1980-05-27
DE2612111C2 (de) 1985-08-29
AT360253B (de) 1980-12-29
US4068269A (en) 1978-01-10

Similar Documents

Publication Publication Date Title
IT1064185B (it) Apparecchiatura di memorizzazione
IT1063872B (it) Apparecchiatura di memorizzazione a dischi
IT1064414B (it) Dispositivo di immagazzinamento
DK35176A (da) Akkumulator
SE406019B (sv) Forradskatod
FR2302617A1 (fr) Di
SE7603038L (sv) Lagerenhet
ATA980975A (de) Stutzeinrichtung
IT1072617B (it) Apparecchiatura di memorizzazione e visualizzazione elettroluminescente
FR2300480A1 (fr) Di
SE7611928L (sv) Koincidensanordnad bleckstraleskrivare
IT1074024B (it) Apparecchiatura di memorizzazione perfezionata
IT1067169B (it) Equipaggiamento radiogoniometrico
IT1063861B (it) Apparecchiatura per la memorizzazione di informazione
SE7605992L (sv) Genomgangshyllageranleggning
FR2300604A1 (fr) Di
IT1061775B (it) Apparecchio di fotocopiatura
NL7605586A (nl) Laadgerei.
SE7608214L (sv) Ackumulator
IT1056749B (it) Apparecchiatura di memorizzazione perfezionamento
IT1088469B (it) Equipaggiamento grammofonico
SE7612721L (sv) Genomgangshyllageranleggning
AT347244B (de) Kinogeraet
IT1033884B (it) Apparecchio di retroproiezione
FR2300972A1 (fr) Di