CA1033837A - Write-erase circuits for rotating head digital magnetic recorders - Google Patents

Write-erase circuits for rotating head digital magnetic recorders

Info

Publication number
CA1033837A
CA1033837A CA234,654A CA234654A CA1033837A CA 1033837 A CA1033837 A CA 1033837A CA 234654 A CA234654 A CA 234654A CA 1033837 A CA1033837 A CA 1033837A
Authority
CA
Canada
Prior art keywords
write
rotating head
digital magnetic
erase circuits
magnetic recorders
Prior art date
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
CA234,654A
Other languages
English (en)
French (fr)
Inventor
Rahmat A. Aziz
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of CA1033837A publication Critical patent/CA1033837A/en
Expired legal-status Critical Current

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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/52—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with simultaneous movement of head and record carrier, e.g. rotation of head
    • G11B5/53—Disposition or mounting of heads on rotating support
CA234,654A 1974-10-31 1975-08-29 Write-erase circuits for rotating head digital magnetic recorders Expired CA1033837A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US519740A US3900894A (en) 1974-10-31 1974-10-31 Write-erase circuits for rotating head digital magnetic recorders

Publications (1)

Publication Number Publication Date
CA1033837A true CA1033837A (en) 1978-06-27

Family

ID=24069583

Family Applications (1)

Application Number Title Priority Date Filing Date
CA234,654A Expired CA1033837A (en) 1974-10-31 1975-08-29 Write-erase circuits for rotating head digital magnetic recorders

Country Status (7)

Country Link
US (1) US3900894A (it)
JP (1) JPS5151919A (it)
CA (1) CA1033837A (it)
DE (1) DE2539159B2 (it)
FR (1) FR2289994A1 (it)
GB (1) GB1473453A (it)
IT (1) IT1042371B (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005482A (en) * 1975-06-06 1977-01-25 International Business Machines Corporation Asymmetric erase across a rotary transformer to a rotating magnetic head
JPS5436709A (en) * 1977-08-26 1979-03-17 Sony Corp Position control circuit for rotary magnetic head
DE3340113A1 (de) * 1983-11-05 1985-05-15 Robert Bosch Gmbh, 7000 Stuttgart System zur speicherung digital codierter signale auf magnetband
JPH06105484B2 (ja) * 1984-06-29 1994-12-21 キヤノン株式会社 磁気記緑再生装置
JPH0823925B2 (ja) * 1984-07-31 1996-03-06 株式会社東芝 磁気記録再生装置
JPH0770013B2 (ja) * 1985-07-17 1995-07-31 株式会社日立製作所 フレキシブルディスク装置の情報記録方法
JPH0711849B2 (ja) * 1987-02-27 1995-02-08 株式会社東芝 フロツピ−デイスク装置のデ−タ記録制御装置
JPH0792885B2 (ja) * 1988-05-16 1995-10-09 日本ビクター株式会社 磁気記録再生装置
JPH04332903A (ja) * 1991-05-02 1992-11-19 Koufu Nippon Denki Kk 磁気カード記録再生装置
JPH08182623A (ja) * 1994-12-29 1996-07-16 Maruzen:Kk ギョーザ調理方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3042756A (en) * 1956-12-21 1962-07-03 Ibm Rotatable magnetic transducer
US2857585A (en) * 1957-02-13 1958-10-21 Ibm Magnetic data recording and reproducing apparatus
US3361878A (en) * 1964-03-11 1968-01-02 Ampex Signal switching system utilizing magnetic switching for rotating head recorders
US3536856A (en) * 1967-09-20 1970-10-27 Ampex Record-reproduce mode selection without mechanical relays

Also Published As

Publication number Publication date
FR2289994B1 (it) 1977-12-16
US3900894A (en) 1975-08-19
JPS5151919A (en) 1976-05-07
DE2539159B2 (de) 1979-06-07
DE2539159C3 (it) 1980-02-14
IT1042371B (it) 1980-01-30
DE2539159A1 (de) 1976-05-06
JPS5518965B2 (it) 1980-05-22
FR2289994A1 (fr) 1976-05-28
GB1473453A (en) 1977-05-11

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