FR2296905A1 - Transducing head steering system - has head which follows path over adjacent tracks of different servo signal records - Google Patents

Transducing head steering system - has head which follows path over adjacent tracks of different servo signal records

Info

Publication number
FR2296905A1
FR2296905A1 FR7443627A FR7443627A FR2296905A1 FR 2296905 A1 FR2296905 A1 FR 2296905A1 FR 7443627 A FR7443627 A FR 7443627A FR 7443627 A FR7443627 A FR 7443627A FR 2296905 A1 FR2296905 A1 FR 2296905A1
Authority
FR
France
Prior art keywords
head
tracks
steering system
servo signal
over adjacent
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
FR7443627A
Other languages
French (fr)
Other versions
FR2296905B1 (en
Inventor
Theodore A Schwartz
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
Priority to FR7443627A priority Critical patent/FR2296905A1/en
Publication of FR2296905A1 publication Critical patent/FR2296905A1/en
Application granted granted Critical
Publication of FR2296905B1 publication Critical patent/FR2296905B1/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
    • G11B5/48—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
    • G11B5/59688—Servo signal format patterns or signal processing thereof, e.g. dual, tri, quad, burst signal patterns

Abstract

A transducing head steering system in which a head follows a path over adjacent tracks of different servo signal records, and feeds derived signals to a servo circuit including a comparator. The comparator produces error signals to cause the head to be centred on the path and, at periodic intervals along the tracks, the effect of the error signals on the head is suspended. The records in the servo tracks are altered to generate 100% off-track indications in either direction sequentially, and the consequential signals to the comparator are equalised. The path and tracks are endless and there is at least one section of altered record in each track, the sections being sequential on the different tracks.
FR7443627A 1974-12-31 1974-12-31 Transducing head steering system - has head which follows path over adjacent tracks of different servo signal records Granted FR2296905A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7443627A FR2296905A1 (en) 1974-12-31 1974-12-31 Transducing head steering system - has head which follows path over adjacent tracks of different servo signal records

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7443627A FR2296905A1 (en) 1974-12-31 1974-12-31 Transducing head steering system - has head which follows path over adjacent tracks of different servo signal records

Publications (2)

Publication Number Publication Date
FR2296905A1 true FR2296905A1 (en) 1976-07-30
FR2296905B1 FR2296905B1 (en) 1977-07-08

Family

ID=9146939

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7443627A Granted FR2296905A1 (en) 1974-12-31 1974-12-31 Transducing head steering system - has head which follows path over adjacent tracks of different servo signal records

Country Status (1)

Country Link
FR (1) FR2296905A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2407545A1 (en) * 1977-10-26 1979-05-25 Siemens Ag MOUNTING ALLOWING TO EXPLOIT ENTRY SIGNALS DELIVERED BY A MAGNETIC DISK FROM A DISC MEMORY AND CONSTITUTE OF SEVERAL OSCILLATIONS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
REVUE US "IBM TECHNICAL DISCLOSURE BULLETIN", VOL. 16, NO. 7, DECEMBRE 1973, ARTICLE: "SERVO CHANNEL EQUALIZATION NETWORK" PAGES 2192-2194 SCHWARZ ) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2407545A1 (en) * 1977-10-26 1979-05-25 Siemens Ag MOUNTING ALLOWING TO EXPLOIT ENTRY SIGNALS DELIVERED BY A MAGNETIC DISK FROM A DISC MEMORY AND CONSTITUTE OF SEVERAL OSCILLATIONS

Also Published As

Publication number Publication date
FR2296905B1 (en) 1977-07-08

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Legal Events

Date Code Title Description
ST Notification of lapse