IT1112349B - Sistema per registrazioni magnetiche ad alta densita' linearizzate mediante polarizzazione,utilizzante una trasmissione a risposta parziale con larghezza di banda secondo nyquist - Google Patents

Sistema per registrazioni magnetiche ad alta densita' linearizzate mediante polarizzazione,utilizzante una trasmissione a risposta parziale con larghezza di banda secondo nyquist

Info

Publication number
IT1112349B
IT1112349B IT21126/79A IT2112679A IT1112349B IT 1112349 B IT1112349 B IT 1112349B IT 21126/79 A IT21126/79 A IT 21126/79A IT 2112679 A IT2112679 A IT 2112679A IT 1112349 B IT1112349 B IT 1112349B
Authority
IT
Italy
Prior art keywords
nyquist
polarization
high density
magnetic recording
recording system
Prior art date
Application number
IT21126/79A
Other languages
English (en)
Other versions
IT7921126A0 (it
Original Assignee
Sperry Rand 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 Sperry Rand Corp filed Critical Sperry Rand Corp
Publication of IT7921126A0 publication Critical patent/IT7921126A0/it
Application granted granted Critical
Publication of IT1112349B publication Critical patent/IT1112349B/it

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
    • G11B20/1488—Digital recording or reproducing using self-clocking codes characterised by the use of three levels
    • G11B20/1492—Digital recording or reproducing using self-clocking codes characterised by the use of three levels two levels are symmetric, in respect of the sign to the third level which is "zero"

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Digital Magnetic Recording (AREA)
  • Dc Digital Transmission (AREA)
IT21126/79A 1978-03-20 1979-03-19 Sistema per registrazioni magnetiche ad alta densita' linearizzate mediante polarizzazione,utilizzante una trasmissione a risposta parziale con larghezza di banda secondo nyquist IT1112349B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/888,130 US4195318A (en) 1978-03-20 1978-03-20 High density bias linearized magnetic recording system utilizing Nyquist bandwidth partial response transmission

Publications (2)

Publication Number Publication Date
IT7921126A0 IT7921126A0 (it) 1979-03-19
IT1112349B true IT1112349B (it) 1986-01-13

Family

ID=25392587

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21126/79A IT1112349B (it) 1978-03-20 1979-03-19 Sistema per registrazioni magnetiche ad alta densita' linearizzate mediante polarizzazione,utilizzante una trasmissione a risposta parziale con larghezza di banda secondo nyquist

Country Status (7)

Country Link
US (1) US4195318A (it)
JP (1) JPS54130112A (it)
CA (1) CA1134943A (it)
DE (1) DE2910398A1 (it)
FR (1) FR2420807A1 (it)
GB (1) GB2017989A (it)
IT (1) IT1112349B (it)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5834002B2 (ja) * 1979-10-17 1983-07-23 日立電子株式会社 デイジタル信号の磁気記録再生方式
US4504872A (en) * 1983-02-08 1985-03-12 Ampex Corporation Digital maximum likelihood detector for class IV partial response
US4586091A (en) * 1984-05-03 1986-04-29 Kalhas Oracle, Inc. System and method for high density data recording
KR940018849A (ko) * 1993-01-28 1994-08-19 프레데릭 얀 스미트 영상신호 및 이에 대응하는 음성 신호를 길이방향 자기 기록 매체상의 경사기록 트랙에 기록하는 장치 및 기록매체 (Arrangement for recording a video signal and a corresponding audio signal in slant tracks on a longitudinal magnetic record carrier, and record carrier obtained by means of the arrangement)
US5606464A (en) * 1995-01-31 1997-02-25 Lucent Technologies Inc. Cancellation of precursor intersymbol interference in magnetic recording channels
US7739577B2 (en) * 2004-06-03 2010-06-15 Inphase Technologies Data protection system
US7856464B2 (en) * 2006-02-16 2010-12-21 Sigmatel, Inc. Decimation filter
US8477856B2 (en) * 2009-03-31 2013-07-02 Analog Devices, Inc. Multi-bit digital signal isolator

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3388330A (en) * 1965-03-19 1968-06-11 Bell Telephone Labor Inc Partial response multilevel data system
US3492578A (en) * 1967-05-19 1970-01-27 Bell Telephone Labor Inc Multilevel partial-response data transmission
US3573622A (en) * 1968-04-23 1971-04-06 Bell Telephone Labor Inc Partial-response signal sampling for half-speed data transmission
US3601702A (en) * 1969-03-17 1971-08-24 Gte Automatic Electric Lab Inc High speed data transmission system utilizing nonbinary correlative techniques
US3665485A (en) * 1969-06-11 1972-05-23 Petter Instr Co Inc Method and system for high density recording of information on premagnetized magnetic tape
US3679977A (en) * 1969-06-24 1972-07-25 Bell Telephone Labor Inc Precoded ternary data transmission
US3736414A (en) * 1971-06-30 1973-05-29 Ibm Transversal filter equalizer for partial response channels
US3840891A (en) * 1972-12-27 1974-10-08 Ibm Time duration modulation and demodulation for storage or transmission of digital data
JPS5325729B2 (it) * 1973-09-27 1978-07-28
US3855616A (en) * 1973-10-01 1974-12-17 Ibm Phase shift reducing digital signal recording having no d.c. component
US3921210A (en) * 1974-01-14 1975-11-18 Gen Dynamics Corp High density data processing system
US3952329A (en) * 1975-02-06 1976-04-20 International Business Machines Corporation Pulse compression recording

Also Published As

Publication number Publication date
DE2910398A1 (de) 1979-09-27
CA1134943A (en) 1982-11-02
JPS54130112A (en) 1979-10-09
GB2017989A (en) 1979-10-10
US4195318A (en) 1980-03-25
IT7921126A0 (it) 1979-03-19
FR2420807A1 (fr) 1979-10-19

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