FR2315145A1 - Systemes d'asservissement pour memoire a disques magnetiques - Google Patents

Systemes d'asservissement pour memoire a disques magnetiques

Info

Publication number
FR2315145A1
FR2315145A1 FR7613468A FR7613468A FR2315145A1 FR 2315145 A1 FR2315145 A1 FR 2315145A1 FR 7613468 A FR7613468 A FR 7613468A FR 7613468 A FR7613468 A FR 7613468A FR 2315145 A1 FR2315145 A1 FR 2315145A1
Authority
FR
France
Prior art keywords
control systems
magnetic disc
disc memory
memory
magnetic
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
FR7613468A
Other languages
English (en)
Other versions
FR2315145B1 (fr
Inventor
David H Martin
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 FR2315145A1 publication Critical patent/FR2315145A1/fr
Application granted granted Critical
Publication of FR2315145B1 publication Critical patent/FR2315145B1/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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • 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
    • G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59605—Circuits
    • G11B5/59622—Gain control; Filters
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
FR7613468A 1975-06-18 1976-04-29 Systemes d'asservissement pour memoire a disques magnetiques Granted FR2315145A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2587175A GB1470735A (en) 1975-06-18 1975-06-18 Servo positioning systems for magnetic disc recording

Publications (2)

Publication Number Publication Date
FR2315145A1 true FR2315145A1 (fr) 1977-01-14
FR2315145B1 FR2315145B1 (fr) 1978-05-19

Family

ID=10234735

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7613468A Granted FR2315145A1 (fr) 1975-06-18 1976-04-29 Systemes d'asservissement pour memoire a disques magnetiques

Country Status (5)

Country Link
JP (1) JPS522510A (fr)
DE (1) DE2627002A1 (fr)
FR (1) FR2315145A1 (fr)
GB (1) GB1470735A (fr)
IT (1) IT1064218B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52137371A (en) * 1976-05-13 1977-11-16 Fujitsu Ltd Position control system
DE2920912C2 (de) * 1978-05-29 1987-04-02 N.V. Philips' Gloeilampenfabrieken, Eindhoven Azimutkorrektur von Kopfspalten
US4633344A (en) * 1985-05-28 1986-12-30 Eastman Kodak Company Unambiguously tracking a data track in response to signals derived from the track data itself
US5257148A (en) * 1989-05-30 1993-10-26 Tandberg Data As Method and apparatus for positioning a magnetic head in a magnetic layer memory system using tracking by reading a spaced pair of corresponding subtracks
US6157510A (en) * 1998-03-10 2000-12-05 Maxtor Corporation Magnetic storage device with multiple read elements which are offset laterally and longitudinally
US6266205B1 (en) 1998-03-10 2001-07-24 Maxtor Corporation Parallel servo with ultra high bandwidth off-track detection
US6606216B1 (en) 1999-05-05 2003-08-12 Maxtor Corporation Transducer head with separate data and servo read elements

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR976680A (fr) * 1948-12-21 1951-03-21 Appareil pour la détermination électronique des quotients

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR976680A (fr) * 1948-12-21 1951-03-21 Appareil pour la détermination électronique des quotients

Also Published As

Publication number Publication date
FR2315145B1 (fr) 1978-05-19
IT1064218B (it) 1985-02-18
JPS5429363B2 (fr) 1979-09-22
JPS522510A (en) 1977-01-10
DE2627002A1 (de) 1977-01-20
GB1470735A (en) 1977-04-21

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Legal Events

Date Code Title Description
ST Notification of lapse