BE763963R - Procede d'effacement de signaux enregistres sur un support - Google Patents

Procede d'effacement de signaux enregistres sur un support

Info

Publication number
BE763963R
BE763963R BE763963A BE763963A BE763963R BE 763963 R BE763963 R BE 763963R BE 763963 A BE763963 A BE 763963A BE 763963 A BE763963 A BE 763963A BE 763963 R BE763963 R BE 763963R
Authority
BE
Belgium
Prior art keywords
media
signals recorded
deleting signals
deleting
recorded
Prior art date
Application number
BE763963A
Other languages
English (en)
Inventor
T W Ritchey Jr
Original Assignee
Ampex
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 Ampex filed Critical Ampex
Application granted granted Critical
Publication of BE763963R publication Critical patent/BE763963R/fr

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
    • G11B5/024—Erasing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/781—Television signal recording using magnetic recording on disks or drums

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Digital Magnetic Recording (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
BE763963A 1970-03-27 1971-03-08 Procede d'effacement de signaux enregistres sur un support BE763963R (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2332270A 1970-03-27 1970-03-27

Publications (1)

Publication Number Publication Date
BE763963R true BE763963R (fr) 1971-08-02

Family

ID=21814415

Family Applications (1)

Application Number Title Priority Date Filing Date
BE763963A BE763963R (fr) 1970-03-27 1971-03-08 Procede d'effacement de signaux enregistres sur un support

Country Status (7)

Country Link
US (1) US3723668A (fr)
JP (1) JPS511409B1 (fr)
BE (1) BE763963R (fr)
DE (1) DE2113878C3 (fr)
FR (1) FR2099057A5 (fr)
GB (1) GB1293776A (fr)
NL (1) NL7101356A (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918089A (en) * 1972-05-26 1975-11-04 Ricoh Kk Apparatus for erasing magnetic records of the spiral scanning type
JPS50134608A (fr) * 1974-04-10 1975-10-24
US4005482A (en) * 1975-06-06 1977-01-25 International Business Machines Corporation Asymmetric erase across a rotary transformer to a rotating magnetic head
JPS52107201U (fr) * 1976-02-10 1977-08-15
JPS52170602U (fr) * 1976-06-18 1977-12-24
JPS5387221U (fr) * 1976-12-20 1978-07-18
JPS5451103U (fr) * 1977-09-13 1979-04-09
JPS5578501U (fr) * 1978-11-28 1980-05-30
US4581661A (en) * 1982-12-15 1986-04-08 Canon Kabushiki Kaisha Erasing apparatus employing multiple magnetically premeable members
US4551782A (en) * 1983-09-09 1985-11-05 Rfl Industries, Inc. Method and apparatus for degaussing magnetic storage media
DE3337845A1 (de) * 1983-10-18 1985-04-25 Nixdorf Computer Ag, 4790 Paderborn Festplattenlaufwerk
JPS6098505A (ja) * 1983-11-02 1985-06-01 Canon Inc 消去装置
US5214545A (en) * 1983-11-02 1993-05-25 Canon Kabushiki Kaisha Signal erasing apparatus
WO1985004277A1 (fr) * 1984-03-13 1985-09-26 Olympus Optical Co., Ltd Appareil d'enregistrement et de reproduction magnetiques
JPS6161203A (ja) * 1984-09-03 1986-03-29 Sharp Corp 磁気記録再生装置
US4714969A (en) * 1985-09-16 1987-12-22 Eastman Kodak Company Method and apparatus for erasing a signal recorded on a magnetic disk
US4821127A (en) * 1985-10-18 1989-04-11 Fuji Photo Film Co., Ltd. Demagnetizing apparatus for erasing signals recorded on concentric tracks
US4849832A (en) * 1986-04-03 1989-07-18 Canon Kabushiki Kaisha Reproducing apparatus with erasing device and erasing function based on frequency multiplexed and/or DPSK coded signal
US4730230A (en) * 1987-03-31 1988-03-08 Dowty Rfl Industries, Inc. Apparatus and method for degaussing magnetic storage media
US6052510A (en) 1988-09-19 2000-04-18 Canon Kabushiki Kaisha Apparatus for recording, reproduction or erasing
US5235473A (en) * 1990-04-13 1993-08-10 Asahi Kogaku Kogyo Kabushiki Kaisha Recording medium erasing device
KR20100114762A (ko) * 2009-04-16 2010-10-26 삼성전자주식회사 하드디스크 드라이브의 서보 패턴 삭제방법 및 서보 패턴 삭제장치
US9286916B1 (en) * 2014-08-26 2016-03-15 Seagate Technology Llc High frequency data writer field generator device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH290942A (de) * 1950-10-16 1953-05-31 Treuunternehmen Promundo Einrichtung zum Löschen von Aufzeichnungen auf magnetischen Tonträgern mit einer Mehrzahl unmittelbar nebeneinanderliegender Tonspuren.
US2962560A (en) * 1955-05-09 1960-11-29 Kenneth H Folse Method of demagnetizing a magnetic record
US2846518A (en) * 1955-10-05 1958-08-05 Bell Telephone Labor Inc Means for erasing a magnetic record
US3156784A (en) * 1961-01-30 1964-11-10 Ibm Magnetic eraser

Also Published As

Publication number Publication date
DE2113878A1 (de) 1971-10-07
DE2113878B2 (de) 1973-06-20
NL7101356A (fr) 1971-09-29
GB1293776A (en) 1972-10-25
FR2099057A5 (fr) 1972-03-10
US3723668A (en) 1973-03-27
DE2113878C3 (de) 1974-01-31
JPS511409B1 (fr) 1976-01-17

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