CA2050161A1 - System and method for data recovery in multiple head assembly storage devices - Google Patents

System and method for data recovery in multiple head assembly storage devices

Info

Publication number
CA2050161A1
CA2050161A1 CA2050161A CA2050161A CA2050161A1 CA 2050161 A1 CA2050161 A1 CA 2050161A1 CA 2050161 A CA2050161 A CA 2050161A CA 2050161 A CA2050161 A CA 2050161A CA 2050161 A1 CA2050161 A1 CA 2050161A1
Authority
CA
Canada
Prior art keywords
multiple head
storage devices
head assembly
data recovery
assembly storage
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.)
Granted
Application number
CA2050161A
Other languages
French (fr)
Other versions
CA2050161C (en
Inventor
Robert L. Berry
Brandt C. Centerwall
Stephen G. Luning
Forrest L. Wade
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of CA2050161A1 publication Critical patent/CA2050161A1/en
Application granted granted Critical
Publication of CA2050161C publication Critical patent/CA2050161C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
    • 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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • 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
    • G11B21/02—Driving or moving of heads
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs
    • G11B21/085—Access to indexed tracks or parts of continuous track on discs with track following of accessed part
    • 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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1816—Testing
    • G11B2020/183—Testing wherein at least one additional attempt is made to read or write the data when a first attempt is unsuccessful
    • 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
    • G11B5/488—Disposition of heads
    • G11B5/4886—Disposition of heads relative to rotating disc
    • 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
    • G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
    • G11B5/553—Details
    • G11B5/5547—"Seek" control and circuits therefor

Abstract

A system and method for detecting which head in a multiple head storage device contains errors and may be misaligned, and correcting for that misalignment so that the data can be recovered. These features allow for data to be recovered from the multiple head storage device in an efficient manner, without corrupting data read from those heads of the multiple head storage device which were not misaligned.
CA002050161A 1990-11-14 1991-08-28 System and method for data recovery in multiple head assembly storage devices Expired - Fee Related CA2050161C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/612,661 US5163162A (en) 1990-11-14 1990-11-14 System and method for data recovery in multiple head assembly storage devices
US612,661 1990-11-14

Publications (2)

Publication Number Publication Date
CA2050161A1 true CA2050161A1 (en) 1992-05-15
CA2050161C CA2050161C (en) 1995-10-10

Family

ID=24454111

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002050161A Expired - Fee Related CA2050161C (en) 1990-11-14 1991-08-28 System and method for data recovery in multiple head assembly storage devices

Country Status (7)

Country Link
US (1) US5163162A (en)
EP (1) EP0485795A3 (en)
JP (1) JPH0792896B2 (en)
KR (1) KR950013379B1 (en)
CN (1) CN1023518C (en)
CA (1) CA2050161C (en)
MY (1) MY108075A (en)

Families Citing this family (13)

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JPH04301222A (en) * 1991-03-28 1992-10-23 Toshiba Corp Disk reproducing device
US5511051A (en) * 1992-08-31 1996-04-23 Olympus Optical Co., Ltd. Optical recording/reproducing apparatus capable of multi-track access for simultaneous multirack recording/reproduction
US5353170A (en) * 1993-05-19 1994-10-04 International Business Machines Corporation Error recovery data storage system and method with two position read verification
US5745639A (en) * 1995-01-04 1998-04-28 International Business Machines Corporation Apparatus for improving the continuous supply or display time of full-motion video and other data
US6314433B1 (en) * 1998-06-12 2001-11-06 Hewlett-Packard Company Frame-based heroic data recovery
US6345366B1 (en) * 1998-09-24 2002-02-05 International Business Machines Corporation Method and device for error recovery
USRE40413E1 (en) * 1998-11-06 2008-07-01 Purchased Patent Management Llc Method and apparatus for developing a dynamic servo signal from data
US6381088B1 (en) * 1998-11-06 2002-04-30 Acorn Technologies, Inc. Apparatus for developing a dynamic servo signal from data in a magnetic disc drive and method
US6706577B1 (en) * 1999-04-26 2004-03-16 Taiwan Semiconductor Manufacturing Company Formation of dual gate oxide by two-step wet oxidation
JP3833016B2 (en) * 1999-08-27 2006-10-11 富士通株式会社 Servo recovery method of storage device and storage device
US6412088B1 (en) * 1999-12-02 2002-06-25 Maxtor Corporation Method and apparatus for using block reread
US6606041B1 (en) * 2000-05-10 2003-08-12 Micron Technology, Inc. Predictive timing calibration for memory devices
JP2010146654A (en) * 2008-12-19 2010-07-01 Toshiba Corp Memory device

Family Cites Families (28)

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Publication number Priority date Publication date Assignee Title
USRE31166E (en) * 1967-08-09 1983-03-01 Rca Corporation Recovery of normally illegible, magnetically recorded information
US4103234A (en) * 1967-11-24 1978-07-25 General Dynamics Corp. System for transmission storage and/or multiplexing of information
US3943566A (en) * 1974-07-17 1976-03-09 International Business Machines Corporation Dynamic skew correction for rotating head magnetic recorder
US4024498A (en) * 1975-08-04 1977-05-17 Mcintosh Billy L Apparatus for dead track recovery
DE2622696C3 (en) * 1976-05-21 1979-09-13 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Circuit arrangement for error checking and error correction of binary data
JPS6032258B2 (en) * 1976-09-13 1985-07-26 ソニー株式会社 Automatic tracking control device
US4092732A (en) * 1977-05-31 1978-05-30 International Business Machines Corporation System for recovering data stored in failed memory unit
US4445153A (en) * 1980-03-07 1984-04-24 Ricoh Company, Ltd. Method of correcting track misalignment of floppy disc and apparatus therefor
JPS5780880A (en) * 1980-11-07 1982-05-20 Sony Corp Video signal reproducing device
JPS57140083A (en) * 1981-02-24 1982-08-30 Sony Corp Video signal reproducing device
US4414587A (en) * 1981-12-17 1983-11-08 Sri International Skew sensing for digital tape playback
US4477849A (en) * 1982-04-12 1984-10-16 Pioneer Magnetics, Inc. Magnetic disc drive head alignment system
US4581567A (en) * 1982-05-28 1986-04-08 Citizen Watch Co., Ltd. Device for feeding magnetic head
US4516165A (en) * 1982-12-27 1985-05-07 International Business Machines Corporation Error recovery procedure using selective erasure
US4825403A (en) * 1983-05-16 1989-04-25 Data General Corporation Apparatus guaranteeing that a controller in a disk drive system receives at least some data from an invalid track sector
US4604687A (en) * 1983-08-11 1986-08-05 Lucasfilm Ltd. Method and system for storing and retrieving multiple channel sampled data
FR2561428B1 (en) * 1984-03-16 1986-09-12 Bull Sa DISC MEMORY RECORDING METHOD AND DISC MEMORY SYSTEM
IT1182420B (en) * 1985-02-08 1987-10-05 Olivetti & Co Spa APPARATUS TO RECORD AND READ INFORMATION ON A MAGNETIC DISC
JPH06101207B2 (en) * 1985-03-13 1994-12-12 ソニー株式会社 Error detection and correction method
US4620244A (en) * 1985-11-20 1986-10-28 Seagate Technology Compensation method to correct thermally induced off-track errors in disc drives
US4722085A (en) * 1986-02-03 1988-01-26 Unisys Corp. High capacity disk storage system having unusually high fault tolerance level and bandpass
US4669004A (en) * 1986-02-27 1987-05-26 Quantum Corporation High capacity disk file with embedded sector servo
US4783705A (en) * 1986-02-27 1988-11-08 Quantum Corporation High capacity disk file with embedded sector servo and SCSI interface
US4730321A (en) * 1986-05-30 1988-03-08 Quantum Corporation Disk drive with improved error correction code
JPS63104225A (en) * 1986-10-21 1988-05-09 Csk Corp Tracking system for optical recording medium
US4823212A (en) * 1986-11-26 1989-04-18 Hewlett-Packard Company Sampled servo code format and system for a disc drive
US4942579A (en) * 1987-06-02 1990-07-17 Cab-Tek, Inc. High-speed, high-capacity, fault-tolerant error-correcting storage system
US4914656A (en) * 1988-06-28 1990-04-03 Storage Technology Corporation Disk drive memory

Also Published As

Publication number Publication date
JPH04265504A (en) 1992-09-21
KR950013379B1 (en) 1995-11-02
US5163162A (en) 1992-11-10
CN1061485A (en) 1992-05-27
CA2050161C (en) 1995-10-10
KR920010432A (en) 1992-06-26
CN1023518C (en) 1994-01-12
EP0485795A2 (en) 1992-05-20
MY108075A (en) 1996-08-15
JPH0792896B2 (en) 1995-10-09
EP0485795A3 (en) 1993-02-10

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Legal Events

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