IT1064218B - IMPROVED SERVO POSITIONING EQUIPMENT FOR MAGNETIC DISC STORAGE UNIT - Google Patents

IMPROVED SERVO POSITIONING EQUIPMENT FOR MAGNETIC DISC STORAGE UNIT

Info

Publication number
IT1064218B
IT1064218B IT2218076A IT2218076A IT1064218B IT 1064218 B IT1064218 B IT 1064218B IT 2218076 A IT2218076 A IT 2218076A IT 2218076 A IT2218076 A IT 2218076A IT 1064218 B IT1064218 B IT 1064218B
Authority
IT
Italy
Prior art keywords
storage unit
magnetic disc
disc storage
positioning equipment
servo positioning
Prior art date
Application number
IT2218076A
Other languages
Italian (it)
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Application granted granted Critical
Publication of IT1064218B publication Critical patent/IT1064218B/en

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
IT2218076A 1975-06-18 1976-04-12 IMPROVED SERVO POSITIONING EQUIPMENT FOR MAGNETIC DISC STORAGE UNIT IT1064218B (en)

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 (1)

Publication Number Publication Date
IT1064218B true IT1064218B (en) 1985-02-18

Family

ID=10234735

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2218076A IT1064218B (en) 1975-06-18 1976-04-12 IMPROVED SERVO POSITIONING EQUIPMENT FOR MAGNETIC DISC STORAGE UNIT

Country Status (5)

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

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
DE2920912A1 (en) * 1978-05-29 1979-12-13 Philips Nv AZIMUTH CORRECTION OF HEAD COLUMNS
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
US6266205B1 (en) 1998-03-10 2001-07-24 Maxtor Corporation Parallel servo with ultra high bandwidth off-track detection
US6157510A (en) * 1998-03-10 2000-12-05 Maxtor Corporation Magnetic storage device with multiple read elements which are offset laterally and longitudinally
US6606216B1 (en) 1999-05-05 2003-08-12 Maxtor Corporation Transducer head with separate data and servo read elements

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR976680A (en) * 1948-12-21 1951-03-21 Apparatus for the electronic determination of quotients

Also Published As

Publication number Publication date
FR2315145B1 (en) 1978-05-19
JPS5429363B2 (en) 1979-09-22
FR2315145A1 (en) 1977-01-14
DE2627002A1 (en) 1977-01-20
GB1470735A (en) 1977-04-21
JPS522510A (en) 1977-01-10

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