FR2243489B1 - - Google Patents

Info

Publication number
FR2243489B1
FR2243489B1 FR7429656A FR7429656A FR2243489B1 FR 2243489 B1 FR2243489 B1 FR 2243489B1 FR 7429656 A FR7429656 A FR 7429656A FR 7429656 A FR7429656 A FR 7429656A FR 2243489 B1 FR2243489 B1 FR 2243489B1
Authority
FR
France
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
FR7429656A
Other versions
FR2243489A1 (fr
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.)
Unisys Corp
Original Assignee
Burroughs 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 Burroughs Corp filed Critical Burroughs Corp
Publication of FR2243489A1 publication Critical patent/FR2243489A1/fr
Application granted granted Critical
Publication of FR2243489B1 publication Critical patent/FR2243489B1/fr
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
    • G11B20/16—Digital recording or reproducing using non self-clocking codes, i.e. the clock signals are either recorded in a separate clocking track or in a combination of several information tracks
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
FR7429656A 1973-09-12 1974-08-30 Expired FR2243489B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US396479A US3864735A (en) 1973-09-12 1973-09-12 Read/write system for high density magnetic recording

Publications (2)

Publication Number Publication Date
FR2243489A1 FR2243489A1 (fr) 1975-04-04
FR2243489B1 true FR2243489B1 (fr) 1979-10-05

Family

ID=23567340

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7429656A Expired FR2243489B1 (fr) 1973-09-12 1974-08-30

Country Status (6)

Country Link
US (1) US3864735A (fr)
JP (1) JPS5057417A (fr)
DE (1) DE2440636C2 (fr)
FR (1) FR2243489B1 (fr)
GB (1) GB1482136A (fr)
NL (1) NL7410909A (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921212A (en) * 1974-12-02 1975-11-18 Kennedy Co C J Read circuit and process for reading multi-track recorded information with partial time multiplexing
US3938182A (en) * 1975-01-06 1976-02-10 The United States Of America As Represented By The United States National Aeronautics And Space Administration Office Of General Counsel-Code Gp Automatic character skew and spacing checking network
CH589895A5 (fr) * 1975-06-17 1977-07-29 Landis & Gyr Ag
US3996612A (en) * 1975-07-07 1976-12-07 Ncr Corporation Test code generator
US4009490A (en) * 1975-07-07 1977-02-22 Ncr Corporation PLO phase detector and corrector
US4122501A (en) * 1976-12-13 1978-10-24 Sperry Rand Corporation System for recording and reading back data on a recording media
US4109236A (en) * 1977-06-17 1978-08-22 Honeywell Information Systems Inc. Apparatus for digital data recovery from mass storage devices
US4544964A (en) * 1978-02-24 1985-10-01 Burroughs Corporation Strobe for read/write chain
US4218770A (en) * 1978-09-08 1980-08-19 Bell Telephone Laboratories, Incorporated Delay modulation data transmission system
FR2452148A1 (fr) * 1979-03-21 1980-10-17 Automatisme Cie Gle Procede d'enregistrement magnetique
GB2046495B (en) * 1979-04-11 1983-04-20 Burroughs Corp High storage density disc file
DE3030759A1 (de) * 1980-08-14 1982-03-11 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltung zur zeitfehlerbeseitigung bei der wiedergabe taktbehafteter signale, insbesondere bei einer digitaltonplatte
US4635140A (en) * 1982-05-08 1987-01-06 Victor Company Of Japan, Limited Digital recording/playback system with limited frequency range
US4520408A (en) * 1983-02-22 1985-05-28 Vsp Labs, Inc. Clock signal synchronization apparatus and method for decoding self-clocking encoded data
IT1206332B (it) * 1983-10-25 1989-04-14 Honeywell Inf Systems Apparato digitale per sistema di recupero di informazioni binarie registrate su supporti magnetici.
US4727509A (en) * 1984-06-28 1988-02-23 Information Exchange Systems, Inc. Master/slave system for replicating/formatting flexible magnetic diskettes
US4618897A (en) * 1985-02-11 1986-10-21 Ixi Laboratories, Inc. System for synchronizing plural data storage devices to a common master
JPS61192075A (ja) * 1985-02-20 1986-08-26 Canon Inc 情報記録担体およびその再生方法
IT1200426B (it) * 1985-03-21 1989-01-18 Honeywell Inf Systems Apparato digitale per sistema di recupero di informazioni binarie registrate su supporti magnetici
JPH06139732A (ja) * 1992-10-27 1994-05-20 Nec Ic Microcomput Syst Ltd 磁気ディスクコントローラ
WO1994027287A1 (fr) * 1993-05-18 1994-11-24 Sony Corporation Unite de disque
JP3814470B2 (ja) * 2000-08-09 2006-08-30 富士通株式会社 データ転送方法及びデータ転送装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB792294A (en) * 1954-12-31 1958-03-26 Standard Telephones Cables Ltd Improvements in or relating to intelligence storage equipment
US3065461A (en) * 1958-06-30 1962-11-20 Ibm Magnetic recording apparatus
US3141151A (en) * 1959-03-23 1964-07-14 Burroughs Corp Magnetic tape storage system for digital computers wherein an indication of the number of bits in a message is stored with the message
US3172091A (en) * 1961-05-12 1965-03-02 Gen Electric Digital tachometer
US3699554A (en) * 1970-07-02 1972-10-17 Honeywell Inf Systems Method and apparatus for detecting binary data by integrated signal polarity comparison

Also Published As

Publication number Publication date
FR2243489A1 (fr) 1975-04-04
US3864735A (en) 1975-02-04
GB1482136A (en) 1977-08-03
DE2440636C2 (de) 1983-03-31
DE2440636A1 (de) 1975-03-13
JPS5057417A (fr) 1975-05-19
NL7410909A (nl) 1975-03-14

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Legal Events

Date Code Title Description
CD Change of name or company name
TP Transmission of property
ST Notification of lapse