GB1513901A - High density magnetic storage system - Google Patents

High density magnetic storage system

Info

Publication number
GB1513901A
GB1513901A GB24365/75A GB2436575A GB1513901A GB 1513901 A GB1513901 A GB 1513901A GB 24365/75 A GB24365/75 A GB 24365/75A GB 2436575 A GB2436575 A GB 2436575A GB 1513901 A GB1513901 A GB 1513901A
Authority
GB
United Kingdom
Prior art keywords
signal
circuit
output
bit
frequency
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
GB24365/75A
Other languages
English (en)
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
Publication of GB1513901A publication Critical patent/GB1513901A/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)
  • Digital Magnetic Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Dc Digital Transmission (AREA)
GB24365/75A 1974-06-07 1975-06-06 High density magnetic storage system Expired GB1513901A (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
GB1513901A true GB1513901A (en) 1978-06-14

Family

ID=23895948

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24365/75A Expired GB1513901A (en) 1974-06-07 1975-06-06 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)

Families Citing this family (10)

* 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
US4623170A (en) * 1983-06-02 1986-11-18 Cornwall Kenneth R Coupling
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

Also Published As

Publication number Publication date
CA1063718A (en) 1979-10-02
DE2525056A1 (de) 1975-12-18
JPS5634927B2 (enExample) 1981-08-13
JPS5140111A (en) 1976-04-03
US3930265A (en) 1975-12-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee