NL8003646A - Werkwijze en digitale magnetische registratie- -inrichting met hoogfrequente polarisatie. - Google Patents

Werkwijze en digitale magnetische registratie- -inrichting met hoogfrequente polarisatie. Download PDF

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Publication number
NL8003646A
NL8003646A NL8003646A NL8003646A NL8003646A NL 8003646 A NL8003646 A NL 8003646A NL 8003646 A NL8003646 A NL 8003646A NL 8003646 A NL8003646 A NL 8003646A NL 8003646 A NL8003646 A NL 8003646A
Authority
NL
Netherlands
Prior art keywords
signal
recording
polarization
phase
transitions
Prior art date
Application number
NL8003646A
Other languages
English (en)
Dutch (nl)
Original Assignee
Cii Honeywell Bull
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 Cii Honeywell Bull filed Critical Cii Honeywell Bull
Publication of NL8003646A publication Critical patent/NL8003646A/nl

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/027—Analogue recording
    • G11B5/03—Biasing
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Digital Magnetic Recording (AREA)
NL8003646A 1979-07-02 1980-06-24 Werkwijze en digitale magnetische registratie- -inrichting met hoogfrequente polarisatie. NL8003646A (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7917172 1979-07-02
FR7917172A FR2460522A1 (fr) 1979-07-02 1979-07-02 Procede et dispositif d'enregistrement magnetique numerique avec polarisation a haute frequence

Publications (1)

Publication Number Publication Date
NL8003646A true NL8003646A (nl) 1981-01-06

Family

ID=9227405

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8003646A NL8003646A (nl) 1979-07-02 1980-06-24 Werkwijze en digitale magnetische registratie- -inrichting met hoogfrequente polarisatie.

Country Status (8)

Country Link
US (1) US4383281A (fr)
JP (1) JPS5611610A (fr)
DE (1) DE3025045A1 (fr)
FR (1) FR2460522A1 (fr)
GB (1) GB2055238B (fr)
IT (1) IT1131891B (fr)
NL (1) NL8003646A (fr)
SE (1) SE447767B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4420776A (en) * 1981-11-30 1983-12-13 International Business Machines PSK Modulation in AC bias data recording
JPS601956A (ja) * 1983-06-17 1985-01-08 Sony Corp デイジタルデ−タの変調方法
DE3533447A1 (de) * 1985-09-19 1987-03-26 Tandberg Data Verfahren und anordnung zum aufzeichnen von daten auf einem magnetischen aufzeichnungstraeger
DE3533454A1 (de) * 1985-09-19 1987-03-26 Tandberg Data Verfahren und anordnung zur aufzeichnung und wiedergabe von daten
DE3633269A1 (de) * 1986-09-30 1988-03-31 Tandberg Data Verfahren und anordnung zum aufzeichnen von digitalen daten auf einen magnetischen aufzeichnungstraeger
US4845573A (en) * 1986-10-06 1989-07-04 Tandberg Data A/S System with filter system for improved reliability for recording data on a magnetic recording medium
DE3827370A1 (de) * 1988-08-12 1990-02-15 Broadcast Television Syst Schaltungsanordnung zur aufzeichnung von digitalen signalen
US5083349A (en) * 1991-03-08 1992-01-28 Talon, Inc. Slide fastener slider
GB2376791B (en) * 2000-03-31 2004-05-12 Seagate Technology Llc Pulsed write current adapted for use with a field maintenance current in a data storage device

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215779A (en) * 1961-02-24 1965-11-02 Hallicrafters Co Digital data conversion and transmission system
US3641524A (en) * 1966-11-07 1972-02-08 Leach Corp Magnetic record and reproduce system for digital data having a nrzc format
US3551816A (en) * 1969-03-10 1970-12-29 T O Paine Digital synchronizer
US3792454A (en) * 1972-01-03 1974-02-12 Honeywell Inf Systems Magnetic strorage system using alternate codes to reduce write current bias
US3789380A (en) * 1972-02-18 1974-01-29 Ibm Digital recording at twice nyquist bandwidth
US3980824A (en) * 1974-10-29 1976-09-14 Motorola, Inc. Modulator demodulator for binary digitally encoded messages
US3952329A (en) * 1975-02-06 1976-04-20 International Business Machines Corporation Pulse compression recording
US4017903A (en) * 1975-08-27 1977-04-12 Hewlett-Packard Company Pulse code modulation recording and/or reproducing system
JPS5836403B2 (ja) * 1976-04-19 1983-08-09 日本電信電話株式会社 デジタル信号の磁気記録法
US4202017A (en) * 1978-05-08 1980-05-06 Sperry Rand Corporation Magnetic recording signal equalization apparatus
US4234897A (en) * 1978-10-05 1980-11-18 Ampex Corporation DC Free encoding for data transmission
FR2459529A1 (fr) * 1979-06-18 1981-01-09 Cii Honeywell Bull Procede et dispositif d'enregistrement magnetique numerique avec polarisation a haute frequence

Also Published As

Publication number Publication date
FR2460522B1 (fr) 1983-07-22
IT1131891B (it) 1986-06-25
JPS5611610A (en) 1981-02-05
SE447767B (sv) 1986-12-08
DE3025045A1 (de) 1981-01-15
GB2055238A (en) 1981-02-25
US4383281A (en) 1983-05-10
FR2460522A1 (fr) 1981-01-23
IT8023200A0 (it) 1980-07-02
DE3025045C2 (fr) 1990-05-31
SE8004696L (sv) 1981-01-03
GB2055238B (en) 1983-07-20

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Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
BV The patent application has lapsed