DE3572061D1 - Alignment disk and method for producing it - Google Patents

Alignment disk and method for producing it

Info

Publication number
DE3572061D1
DE3572061D1 DE8585112177T DE3572061T DE3572061D1 DE 3572061 D1 DE3572061 D1 DE 3572061D1 DE 8585112177 T DE8585112177 T DE 8585112177T DE 3572061 T DE3572061 T DE 3572061T DE 3572061 D1 DE3572061 D1 DE 3572061D1
Authority
DE
Germany
Prior art keywords
tracks
spiral
disk
alignment
microstepping
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
DE8585112177T
Other languages
English (en)
Inventor
Ronald M Sturtevant-Stuart
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.)
Verbatim Corp
Original Assignee
Verbatim 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
Application filed by Verbatim Corp filed Critical Verbatim Corp
Application granted granted Critical
Publication of DE3572061D1 publication Critical patent/DE3572061D1/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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00572—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium
    • G11B20/00586—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the physical format of the recording medium
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • 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
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/16—Supporting the heads; Supporting the sockets for plug-in heads
    • G11B21/24—Head support adjustments
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/10—Indicating arrangements; Warning arrangements
    • 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
    • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
    • 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
    • G11B5/455—Arrangements for functional testing of heads; Measuring arrangements for heads
    • 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
    • G11B5/56—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 support for the purpose of adjusting the position of the head relative to the record carrier, e.g. manual adjustment for azimuth correction or track centering
    • 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
    • G11B5/59627—Aligning for runout, eccentricity or offset compensation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508—Magnetic discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
DE8585112177T 1984-10-25 1985-09-25 Alignment disk and method for producing it Expired DE3572061D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/664,580 US4608618A (en) 1984-10-25 1984-10-25 Digital alignment diagnostic disk

Publications (1)

Publication Number Publication Date
DE3572061D1 true DE3572061D1 (en) 1989-09-07

Family

ID=24666563

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585112177T Expired DE3572061D1 (en) 1984-10-25 1985-09-25 Alignment disk and method for producing it

Country Status (4)

Country Link
US (1) US4608618A (de)
EP (1) EP0179299B1 (de)
JP (1) JPS61107522A (de)
DE (1) DE3572061D1 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4725968A (en) * 1985-05-14 1988-02-16 Nicolet Instrument Corporation Disk drive testing method and apparatus
JPS62175974A (ja) * 1986-01-29 1987-08-01 Hitachi Ltd 磁気ヘツド調整方法
US4992893A (en) * 1986-02-19 1991-02-12 Hitachi, Ltd. Alignment disk for magnetic disk driving apparatus and method and apparatus for verifying tracking error of the magnetic disk driving apparatus
DE8704667U1 (de) * 1987-03-28 1987-07-30 Basf Ag, 6700 Ludwigshafen, De
US5241442A (en) * 1987-10-23 1993-08-31 Kabushiki Kaisha Toshiba Alignment disk
JP2754062B2 (ja) * 1988-02-11 1998-05-20 ヴォーゲル、ピーター、サムュエル 文書作成装置
DE69032614T2 (de) * 1989-11-03 1999-04-15 Compaq Computer Corp Verfahren zur Datenverteilung in einer Speicherplattenanordnung
US5327408A (en) * 1990-09-07 1994-07-05 International Business Machines Corporation Optical disk with sector servo patterns compensating for variations in pattern size and/or radial velocity
US5383070A (en) * 1990-11-21 1995-01-17 Bond; Charles R. Method and device for measuring disk drive alignment
US5572589A (en) * 1993-12-09 1996-11-05 Microsoft Corporation Disc serialization
CA2138301C (en) * 1994-01-21 1998-12-15 Hal Hjalmar Ottesen Apparatus and method for providing multimedia data
US5966732A (en) * 1996-12-02 1999-10-12 Gateway 2000, Inc. Method and apparatus for adding to the reserve area of a disk drive
US6505268B1 (en) 1996-12-20 2003-01-07 Compaq Computer Corporation Data distribution in a disk array
US6002541A (en) * 1997-06-30 1999-12-14 International Business Machines Corporation Method and apparatus for providing a linear position error sensing (PES) signal
US6278784B1 (en) * 1998-12-20 2001-08-21 Peter Gerard Ledermann Intermittent errors in digital disc players
US6845776B2 (en) * 2001-08-27 2005-01-25 Richard S. Stack Satiation devices and methods
US6735041B1 (en) * 2002-03-29 2004-05-11 Western Digital Technologies, Inc. Method for seeking in a magnetic disk drive having a spiral track
FR2853128B1 (fr) * 2003-03-25 2005-05-06 Siemens Vdo Automotive Disque de test, procede et dispositif pour tester un lecteur de disques compacts
US7154689B1 (en) * 2004-02-05 2006-12-26 Maxtor Corporation Apparatus for writing servo bursts on a disk with servo track pitch based on read element width and methods of manufacturing same

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593331A (en) * 1969-01-31 1971-07-13 Ncr Co Magnetic disc calibration track with diminishing apertures
JPS499203A (de) * 1972-05-16 1974-01-26
JPS5412804B2 (de) * 1972-06-22 1979-05-25
US4084201A (en) * 1975-12-02 1978-04-11 Basf Aktiengesellschaft Magnetic disc, especially a flexible magnetic disc, for track adjustment and amplitude control
GB1549440A (en) * 1976-07-06 1979-08-08 Data Recording Instr Co Magnetic storage devices
US4157577A (en) * 1977-11-14 1979-06-05 International Business Machines Corporation Rotatable storage apparatus with digitally responsive circuitry for track selection
FR2470425A1 (fr) * 1979-11-19 1981-05-29 Cii Honeywell Bull Procede pour mesurer la position d'une tete de lecture-ecriture des informations d'un support par rapport a une position de reference de celui-ci et dispositif pour le mettre en oeuvre
IT1166458B (it) * 1980-03-11 1987-05-06 Olivetti Tecnost Spa Metodo e dispositivo per collaudare unita per il trattamento di dische magnetici
US4321636A (en) * 1980-03-17 1982-03-23 Magnetic Peripherals Inc. Cateye-signal intercept detector for aligning a read-write head above a computer data storage disk
US4513333A (en) * 1982-02-24 1985-04-23 Dymek Corporation Diagnostic recording
US4488187A (en) * 1982-06-04 1984-12-11 Syquest Technology Servo control apparatus
US4456938A (en) * 1982-10-12 1984-06-26 International Business Machines Corporation Manufacturing apparatus for adjusting the position of a magnetic head in a flexible disk drive
US4513331A (en) * 1982-10-12 1985-04-23 Dysan Corporation Method and apparatus for disk drive alignment
US4562494A (en) * 1983-04-07 1985-12-31 Verbatim Corporation Disk drive alignment analyzer

Also Published As

Publication number Publication date
EP0179299A2 (de) 1986-04-30
JPS61107522A (ja) 1986-05-26
EP0179299B1 (de) 1989-08-02
US4608618A (en) 1986-08-26
EP0179299A3 (en) 1987-01-14

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee