FR2219481B1 - - Google Patents

Info

Publication number: FR2219481B1
Authority: FR; France
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

FR7404771A

Other versions

FR2219481A1 (fr

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.)

1973-02-27

Filing date

1974-02-12

Publication date

1978-06-16

1974-02-12 Application filed by International Business Machines Corp filed Critical International Business Machines Corp

1974-09-20 Publication of FR2219481A1 publication Critical patent/FR2219481A1/fr

1978-06-16 Application granted granted Critical

1978-06-16 Publication of FR2219481B1 publication Critical patent/FR2219481B1/fr

Status Expired legal-status Critical Current

Classifications

- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/02—Control of operating function, e.g. switching from recording to reproducing
- G11B15/12—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams
- 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
- 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
- G11B5/54—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 provision for moving the head into or out of its operative position or across tracks
- G11B5/55—Track change, selection or acquisition by displacement of the head
- G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
- G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
- G11B5/553—Details
- G11B5/5547—"Seek" control and circuits therefor

FR7404771A 1973-02-27 1974-02-12 Expired FR2219481B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US336391A US3860958A (en)	1973-02-27	1973-02-27	Offset read/write magnetic recording system with guard band

Publications (2)

Publication Number	Publication Date
FR2219481A1 FR2219481A1 (fr)	1974-09-20
FR2219481B1 true FR2219481B1 (fr)	1978-06-16

Family

ID=23315876

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR7404771A Expired FR2219481B1 (fr)	1973-02-27	1974-02-12

Country Status (7)

Country	Link
US (1)	US3860958A (fr)
JP (1)	JPS5345125B2 (fr)
CA (1)	CA1028053A (fr)
DE (1)	DE2409189A1 (fr)
FR (1)	FR2219481B1 (fr)
GB (1)	GB1446255A (fr)
IT (1)	IT1014539B (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5836772B2 (ja) *	1975-03-13	1983-08-11	イワサキツウシンキカブシキガイシヤ	磁気印写装置
JPS6019074B2 (ja)	1978-04-08	1985-05-14	ソニー株式会社	映像信号記録再生装置
DE3067745D1 (en) *	1979-08-02	1984-06-14	Burroughs Corp	Media wear distribution apparatus
JPS5736479A (en)	1980-07-29	1982-02-27	Victor Co Of Japan Ltd	Automatic program searching playback device in playback device
AU6482180A (en) *	1980-08-05	1981-07-22	Budapesti Radiotechnikai Gyar	A method for recording track marking information on flexible magnetical information carrier discs and apparatus for fine adjustment of the position of the reading head
JPS5753803A (en) *	1980-09-17	1982-03-31	Ricoh Co Ltd	Floppy disk device
US4395742A (en) *	1980-10-15	1983-07-26	Minnesota Mining And Manufacturing Company	Home apparatus
US4578722A (en) *	1982-12-23	1986-03-25	International Business Machines Corporation	Method for checking disk identity in a flexible disk recorder
JPS59135663A (ja) *	1983-01-21	1984-08-03	Tokyo Electric Co Ltd	フロッピディスクドライブ装置
JPS619806A (ja) *	1984-06-23	1986-01-17	Brother Ind Ltd	磁気デイスク記録装置
JPH06105484B2 (ja) *	1984-06-29	1994-12-21	キヤノン株式会社	磁気記緑再生装置
US5315469A (en) *	1991-07-25	1994-05-24	Applied Magnetics Corporation	Magnetic recording head which produces variable erase bands
US5452166A (en) *	1993-10-01	1995-09-19	Applied Magnetics Corporation	Thin film magnetic recording head for minimizing undershoots and a method for manufacturing the same
JPH08328752A (ja) *	1994-06-10	1996-12-13	Canon Inc	情報記録装置及び方法
US6643084B1 (en)	2000-04-20	2003-11-04	Hitachi Global Storage Technologies Netherlands B.V.	Adaptive off-track recovery
US6650492B2 (en)	2000-09-28	2003-11-18	Seagate Technology Llc	Self-contained disc drive write authentication test

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3126535A (en) *	1961-12-27	1964-03-24		Transducer positioning system

1973
- 1973-02-27 US US336391A patent/US3860958A/en not_active Expired - Lifetime
1974
- 1974-01-18 JP JP794274A patent/JPS5345125B2/ja not_active Expired
- 1974-01-25 IT IT19785/74A patent/IT1014539B/it active
- 1974-01-28 GB GB386074A patent/GB1446255A/en not_active Expired
- 1974-02-07 CA CA192,005A patent/CA1028053A/fr not_active Expired
- 1974-02-12 FR FR7404771A patent/FR2219481B1/fr not_active Expired
- 1974-02-26 DE DE2409189A patent/DE2409189A1/de active Pending

Also Published As

Publication number	Publication date
IT1014539B (it)	1977-04-30
CA1028053A (fr)	1978-03-14
FR2219481A1 (fr)	1974-09-20
US3860958A (en)	1975-01-14
JPS49120614A (fr)	1974-11-18
JPS5345125B2 (fr)	1978-12-04
GB1446255A (en)	1976-08-18
DE2409189A1 (de)	1974-09-05

Publication	Publication Date	Title
AU476761B2 (fr)	1976-09-30
AR201231Q (fr)	1975-02-21
AU474593B2 (fr)	1976-07-29
AU474511B2 (fr)	1976-07-22
AU474838B2 (fr)	1976-08-05
AU465453B2 (fr)	1975-09-25
FR2219481B1 (fr)	1978-06-16
AU465434B2 (fr)	1975-09-25
AU476714B2 (fr)	1976-09-30
AU466283B2 (fr)	1975-10-23
AU472848B2 (fr)	1976-06-03
AU476696B2 (fr)	1976-09-30
AU477823B2 (fr)	1975-06-19
AU471461B2 (fr)	1976-04-29
AU477824B2 (fr)	1975-07-17
AU476873B1 (fr)	1975-01-09
CH514974A4 (fr)	1975-10-31
AU479404A (fr)	1975-03-13
BG18570A1 (fr)	1975-02-25
AU479562A (fr)	1975-01-09
AU479539A (fr)	1975-01-30
AU479522A (fr)	1975-06-12
AU479521A (fr)	1975-06-05
AU479504A (fr)	1975-05-29
AU479496A (fr)	1975-01-09

Legal Events

Date	Code	Title	Description
1982-01-08	ST	Notification of lapse