FR2289994A1 - Dispositifs d'ecriture et d'effacement pour enregistreurs magnetiques numeriques a tete rotative - Google Patents

Dispositifs d'ecriture et d'effacement pour enregistreurs magnetiques numeriques a tete rotative

Info

Publication number
FR2289994A1
FR2289994A1 FR7525830A FR7525830A FR2289994A1 FR 2289994 A1 FR2289994 A1 FR 2289994A1 FR 7525830 A FR7525830 A FR 7525830A FR 7525830 A FR7525830 A FR 7525830A FR 2289994 A1 FR2289994 A1 FR 2289994A1
Authority
FR
France
Prior art keywords
writing
rotating head
digital magnetic
magnetic recorders
erasing devices
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.)
Granted
Application number
FR7525830A
Other languages
English (en)
Other versions
FR2289994B1 (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
Publication of FR2289994A1 publication Critical patent/FR2289994A1/fr
Application granted granted Critical
Publication of FR2289994B1 publication Critical patent/FR2289994B1/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
    • 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
FR7525830A 1974-10-31 1975-08-11 Dispositifs d'ecriture et d'effacement pour enregistreurs magnetiques numeriques a tete rotative Granted FR2289994A1 (fr)

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 (2)

Publication Number Publication Date
FR2289994A1 true FR2289994A1 (fr) 1976-05-28
FR2289994B1 FR2289994B1 (fr) 1977-12-16

Family

ID=24069583

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7525830A Granted FR2289994A1 (fr) 1974-10-31 1975-08-11 Dispositifs d'ecriture et d'effacement pour enregistreurs magnetiques numeriques a tete rotative

Country Status (7)

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

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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2857585A (en) * 1957-02-13 1958-10-21 Ibm Magnetic data recording and reproducing apparatus

Family Cites Families (3)

* 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
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2857585A (en) * 1957-02-13 1958-10-21 Ibm Magnetic data recording and reproducing apparatus

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
*REVUE US: "IBM TECHNICAL DISCLOSURE BULLETIN", VOL. 18 NO. 1, JUIN 1975, ARTICLE: "DC EQUALIZING WRITE DRIVER" PAGES 252-253 EISELE E.A. ) *
ARTICLE: "MAGNETIC HEAD WRITE DRIVER" PAGE 2239 CHALOUPKA E.A. *
REVUE US: "IBM TECHNICAL DISCLOSURE BULLETIN" VOL. 13, NO. 8, JANVIER 1971 *

Also Published As

Publication number Publication date
JPS5151919A (en) 1976-05-07
JPS5518965B2 (fr) 1980-05-22
FR2289994B1 (fr) 1977-12-16
IT1042371B (it) 1980-01-30
GB1473453A (en) 1977-05-11
DE2539159B2 (de) 1979-06-07
US3900894A (en) 1975-08-19
CA1033837A (fr) 1978-06-27
DE2539159C3 (fr) 1980-02-14
DE2539159A1 (de) 1976-05-06

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Legal Events

Date Code Title Description
ST Notification of lapse