FR2468968B1 - - Google Patents

Info

Publication number
FR2468968B1
FR2468968B1 FR8022757A FR8022757A FR2468968B1 FR 2468968 B1 FR2468968 B1 FR 2468968B1 FR 8022757 A FR8022757 A FR 8022757A FR 8022757 A FR8022757 A FR 8022757A FR 2468968 B1 FR2468968 B1 FR 2468968B1
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
FR8022757A
Other versions
FR2468968A1 (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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Publication of FR2468968A1 publication Critical patent/FR2468968A1/fr
Application granted granted Critical
Publication of FR2468968B1 publication Critical patent/FR2468968B1/fr
Granted 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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Dc Digital Transmission (AREA)
  • Digital Magnetic Recording (AREA)
FR8022757A 1979-10-27 1980-10-24 Procede et appareil pour enregistrer et reproduire magnetiquement des informations numeriques avec des tetes magnetiques a couplage alternatif Granted FR2468968A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13903679A JPS5665311A (en) 1979-10-27 1979-10-27 Magnetic recording and reproduction system for digital information

Publications (2)

Publication Number Publication Date
FR2468968A1 FR2468968A1 (fr) 1981-05-08
FR2468968B1 true FR2468968B1 (fr) 1983-05-27

Family

ID=15235952

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8022757A Granted FR2468968A1 (fr) 1979-10-27 1980-10-24 Procede et appareil pour enregistrer et reproduire magnetiquement des informations numeriques avec des tetes magnetiques a couplage alternatif

Country Status (5)

Country Link
US (1) US4343023A (fr)
JP (1) JPS5665311A (fr)
DE (2) DE3040436A1 (fr)
FR (1) FR2468968A1 (fr)
GB (1) GB2065424B (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5665314A (en) * 1979-11-02 1981-06-03 Sony Corp Encoder for binary signal
JPS57132461A (en) * 1981-02-09 1982-08-16 Sony Corp Converter for binary data code
JPS57176866A (en) * 1981-04-24 1982-10-30 Sony Corp Encoder of binary signal
JPS5977607A (ja) * 1982-10-27 1984-05-04 Hitachi Ltd 記録タイミング補正方式
JPH0714145B2 (ja) * 1983-04-26 1995-02-15 ソニー株式会社 情報変換方法
US4598326A (en) * 1983-10-18 1986-07-01 Honeywell Inc. Digital recording apparatus with disparity reducing encoder
JPH0636281B2 (ja) * 1983-11-14 1994-05-11 株式会社日立製作所 デイジタル磁気録画装置
JPS60113366A (ja) * 1983-11-24 1985-06-19 Sony Corp 情報変換方式
JP2559354B2 (ja) * 1984-02-24 1996-12-04 株式会社日立製作所 ディジタル信号変調方法
JP3528929B2 (ja) * 1993-09-22 2004-05-24 ソニー株式会社 磁気記録装置
US5739969A (en) * 1994-07-26 1998-04-14 Inwave Technologies, Inc. Digital data storage using predetermined increments of time wherein each increment represents a plurality of bits of information
JP3639618B2 (ja) * 1994-08-25 2005-04-20 キヤノン株式会社 信号処理装置
US6703949B2 (en) * 2001-10-11 2004-03-09 Sun Microsystems, Inc. Method and apparatus for facilitating balanced bundles of electrical signals
EP1500105A1 (fr) * 2002-04-11 2005-01-26 Koninklijke Philips Electronics N.V. Commande cc stochastique
US6819512B2 (en) * 2003-02-18 2004-11-16 Protoscience, Inc. Triple-attribute method of encoding and decoding magnetic data

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3405235A (en) * 1963-03-12 1968-10-08 Post Office Systems for transmitting code pulses having low cumulative displarity
GB1250908A (fr) * 1968-12-13 1971-10-27
US3648265A (en) * 1969-12-30 1972-03-07 Ibm Magnetic data storage system with interleaved nrzi coding
SE349438B (fr) * 1971-01-26 1972-09-25 Ericsson Telefon Ab L M
US3792454A (en) * 1972-01-03 1974-02-12 Honeywell Inf Systems Magnetic strorage system using alternate codes to reduce write current bias
US3810111A (en) * 1972-12-26 1974-05-07 Ibm Data coding with stable base line for recording and transmitting binary data
US3921210A (en) * 1974-01-14 1975-11-18 Gen Dynamics Corp High density data processing system
US4027335A (en) * 1976-03-19 1977-05-31 Ampex Corporation DC free encoding for data transmission system

Also Published As

Publication number Publication date
US4343023A (en) 1982-08-03
JPS6226102B2 (fr) 1987-06-06
DE3040436C2 (fr) 1988-05-11
DE3040436A1 (de) 1981-05-07
GB2065424B (en) 1984-06-13
GB2065424A (en) 1981-06-24
FR2468968A1 (fr) 1981-05-08
DE3051112C2 (fr) 1989-08-24
JPS5665311A (en) 1981-06-03

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse