JPS5788576A - Method and apparatus for head positioning of floppy disc - Google Patents

Method and apparatus for head positioning of floppy disc

Info

Publication number
JPS5788576A
JPS5788576A JP16281480A JP16281480A JPS5788576A JP S5788576 A JPS5788576 A JP S5788576A JP 16281480 A JP16281480 A JP 16281480A JP 16281480 A JP16281480 A JP 16281480A JP S5788576 A JPS5788576 A JP S5788576A
Authority
JP
Japan
Prior art keywords
read
write head
specified
head
information
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.)
Pending
Application number
JP16281480A
Other languages
Japanese (ja)
Inventor
Masahiro Hatsuno
Sakae Fujimoto
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP16281480A priority Critical patent/JPS5788576A/en
Priority to US06/240,412 priority patent/US4445153A/en
Publication of JPS5788576A publication Critical patent/JPS5788576A/en
Pending 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
    • G11B5/48—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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs
    • 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

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

PURPOSE:To automatically compensate track shift, by converting and storing the quality level of information-read to a specified pattern corresponding to the position of a read/write head and making discrimination from this pattern based on the specified criteria. CONSTITUTION:The information recording section of a floppy disc 1 is provided with 76 lines of concentric tracks T0-T76, a read/write head is slightly moved toward crossing direction of an arbitrary track, and the quality level of the information-read read in with a read/write head in the movement of minute shift is converted into a specified pattern corresponding to the position of the head and stored in the storage section, and after the end of read at a specified range, the optimum read/write head position is discriminated based on the said pattern and the specified criteria. Based on the result of discrimination, the read/write head is finally positioned to the optimum head position. Thus, the track shift is compensated automatically.
JP16281480A 1980-03-07 1980-11-19 Method and apparatus for head positioning of floppy disc Pending JPS5788576A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP16281480A JPS5788576A (en) 1980-11-19 1980-11-19 Method and apparatus for head positioning of floppy disc
US06/240,412 US4445153A (en) 1980-03-07 1981-03-04 Method of correcting track misalignment of floppy disc and apparatus therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16281480A JPS5788576A (en) 1980-11-19 1980-11-19 Method and apparatus for head positioning of floppy disc

Publications (1)

Publication Number Publication Date
JPS5788576A true JPS5788576A (en) 1982-06-02

Family

ID=15761725

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16281480A Pending JPS5788576A (en) 1980-03-07 1980-11-19 Method and apparatus for head positioning of floppy disc

Country Status (1)

Country Link
JP (1) JPS5788576A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4628380A (en) * 1985-04-17 1986-12-09 Computer Memories, Inc. Encoder output phase selection system for magnetic disk memory
JPH06203352A (en) * 1992-12-28 1994-07-22 Nec Corp Magnetic disk device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54150106A (en) * 1978-05-15 1979-11-26 Ibm Recording member
JPS5558854A (en) * 1978-10-27 1980-05-01 Ibm Track follow up servo system
JPS56114178A (en) * 1980-02-14 1981-09-08 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54150106A (en) * 1978-05-15 1979-11-26 Ibm Recording member
JPS5558854A (en) * 1978-10-27 1980-05-01 Ibm Track follow up servo system
JPS56114178A (en) * 1980-02-14 1981-09-08 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4628380A (en) * 1985-04-17 1986-12-09 Computer Memories, Inc. Encoder output phase selection system for magnetic disk memory
JPH06203352A (en) * 1992-12-28 1994-07-22 Nec Corp Magnetic disk device

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