CA1063718A - High density magnetic storage system - Google Patents

High density magnetic storage system

Info

Publication number
CA1063718A
CA1063718A CA228,614A CA228614A CA1063718A CA 1063718 A CA1063718 A CA 1063718A CA 228614 A CA228614 A CA 228614A CA 1063718 A CA1063718 A CA 1063718A
Authority
CA
Canada
Prior art keywords
signal
frequency
set forth
providing
level
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
CA228,614A
Other languages
English (en)
French (fr)
Other versions
CA228614S (en
Inventor
Noboru Kimura
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.)
Vrc California Inc
Original Assignee
Vrc California Inc
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 Vrc California Inc filed Critical Vrc California Inc
Application granted granted Critical
Publication of CA1063718A publication Critical patent/CA1063718A/en
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
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Digital Magnetic Recording (AREA)
  • Dc Digital Transmission (AREA)
CA228,614A 1974-06-07 1975-06-05 High density magnetic storage system Expired CA1063718A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US477447A US3930265A (en) 1974-06-07 1974-06-07 High density magnetic storage system

Publications (1)

Publication Number Publication Date
CA1063718A true CA1063718A (en) 1979-10-02

Family

ID=23895948

Family Applications (1)

Application Number Title Priority Date Filing Date
CA228,614A Expired CA1063718A (en) 1974-06-07 1975-06-05 High density magnetic storage system

Country Status (5)

Country Link
US (1) US3930265A (enExample)
JP (1) JPS5140111A (enExample)
CA (1) CA1063718A (enExample)
DE (1) DE2525056A1 (enExample)
GB (1) GB1513901A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4623170A (en) * 1983-06-02 1986-11-18 Cornwall Kenneth R Coupling

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000513A (en) * 1975-07-28 1976-12-28 Computer Peripherals, Inc. Apparatus and method for data recording with peak shift compensation
US4000512A (en) * 1975-12-17 1976-12-28 Redactron Corporation Width modulated magnetic recording
US4219851A (en) * 1978-11-24 1980-08-26 Honeywell Information Systems Inc. Group coded recording data recovery system
US4281356A (en) * 1979-11-28 1981-07-28 R. C. Sanders Technology Systems, Inc. Magnetic disk memory
JPS628305A (ja) * 1985-07-03 1987-01-16 Alps Electric Co Ltd 磁気記録再生装置
JPH0619808B2 (ja) * 1985-07-03 1994-03-16 アルプス電気株式会社 磁気記録再生装置
JPH0674371B2 (ja) * 1985-07-23 1994-09-21 東芝ケミカル株式会社 積層板用樹脂組成物
US5594597A (en) * 1991-11-01 1997-01-14 Iomega Corporation Neural network disk drive read channel pattern detector
JP3447009B1 (ja) 2002-10-29 2003-09-16 實 平垣 構築物用構成体およびその製造方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3226685A (en) * 1961-06-02 1965-12-28 Potter Instrument Co Inc Digital recording systems utilizing ternary, n bit binary and other self-clocking forms
US3588836A (en) * 1967-11-24 1971-06-28 Gen Dynamics Corp Magnetic recording
US3577192A (en) * 1968-02-01 1971-05-04 Ibm Reproduce head with peak sensing circuit
US3643228A (en) * 1969-10-27 1972-02-15 Honeywell Inf Systems High-density storage and retrieval system
US3648265A (en) * 1969-12-30 1972-03-07 Ibm Magnetic data storage system with interleaved nrzi coding
US3641525A (en) * 1970-08-17 1972-02-08 Ncr Co Self-clocking five bit record-playback system
US3622894A (en) * 1970-12-07 1971-11-23 Ibm Predetection signal compensation
US3750121A (en) * 1971-06-18 1973-07-31 Honeywell Inc Address marker encoder in three frequency recording
US3855616A (en) * 1973-10-01 1974-12-17 Ibm Phase shift reducing digital signal recording having no d.c. component

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4623170A (en) * 1983-06-02 1986-11-18 Cornwall Kenneth R Coupling

Also Published As

Publication number Publication date
DE2525056A1 (de) 1975-12-18
JPS5634927B2 (enExample) 1981-08-13
JPS5140111A (en) 1976-04-03
GB1513901A (en) 1978-06-14
US3930265A (en) 1975-12-30

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