GB925603A - Compensation of irregularities in motion of a recording medium - Google Patents

Compensation of irregularities in motion of a recording medium

Info

Publication number
GB925603A
GB925603A GB4392460A GB4392460A GB925603A GB 925603 A GB925603 A GB 925603A GB 4392460 A GB4392460 A GB 4392460A GB 4392460 A GB4392460 A GB 4392460A GB 925603 A GB925603 A GB 925603A
Authority
GB
United Kingdom
Prior art keywords
head
compensate
irregularities
dec
compensation
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.)
Expired
Application number
GB4392460A
Inventor
Laszlo Namenyi-Katz
Ferenc Nagy
Zoltan Schreck
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.)
Vectron Electro Physics Ltd
Original Assignee
Vectron Electro Physics 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 Vectron Electro Physics Ltd filed Critical Vectron Electro Physics Ltd
Priority to GB4392460A priority Critical patent/GB925603A/en
Priority to DEV21767A priority patent/DE1188846B/en
Priority to FR882552A priority patent/FR1309568A/en
Publication of GB925603A publication Critical patent/GB925603A/en
Expired legal-status Critical Current

Links

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
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/1808—Driving of both record carrier and head
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/20—Signal processing not specific to the method of recording or reproducing; Circuits therefor for correction of skew for multitrack recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/22—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing distortions
    • G11B20/225—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing distortions for reducing wow or flutter
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0007—Circuits or methods for reducing noise, for correction of distortion, or for changing density of recorded information
    • 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
    • G11B5/56—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 support for the purpose of adjusting the position of the head relative to the record carrier, e.g. manual adjustment for azimuth correction or track centering
    • 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
    • G11B5/584—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 tapes

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

925,603. Electric correspondence control systems. VECTRON ELECTRO-PHYSICS Ltd. Dec. 14, 1961 [Dec. 21, 1960], No. 43924/60. Class 40 (1). In order to compensate for irregularities in the movement of a magnetic tape past a transducer head, the tape 1 has cyclic wave signals 2, 3 of the same frequency recorded near each edge, the signals being picked up in the head 4 and fed to amplifiers 5, 6 and a phase discriminator 7, and the phase difference is used to rotate the head 4 about an axis 14 by a piezoelectric crystal transducer 8 to compensate for skew. The frequency of either signal is also compared at 15 with that from an oscillator 16 and used to move the head 4 axially by means of piezo-electric crystal 18, to compensate for wow and flutter.
GB4392460A 1960-12-21 1960-12-21 Compensation of irregularities in motion of a recording medium Expired GB925603A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB4392460A GB925603A (en) 1960-12-21 1960-12-21 Compensation of irregularities in motion of a recording medium
DEV21767A DE1188846B (en) 1960-12-21 1961-12-20 Method and device for compensating for irregularities in the movement of an elongated recording medium that is passed in front of a transmission system
FR882552A FR1309568A (en) 1960-12-21 1961-12-20 Method and apparatus for compensating for irregularities in movement of a recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4392460A GB925603A (en) 1960-12-21 1960-12-21 Compensation of irregularities in motion of a recording medium

Publications (1)

Publication Number Publication Date
GB925603A true GB925603A (en) 1963-05-08

Family

ID=10430947

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4392460A Expired GB925603A (en) 1960-12-21 1960-12-21 Compensation of irregularities in motion of a recording medium

Country Status (2)

Country Link
DE (1) DE1188846B (en)
GB (1) GB925603A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576553A (en) * 1968-04-29 1971-04-27 Ibm Data transducer positioning servo utilizing compensation network and phase-displaced servo signal pairs of like frequency
US4433351A (en) * 1980-11-28 1984-02-21 Minnesota Mining And Manufacturing Company System for reducing phase error in multitrack magnetic recording
US4525696A (en) * 1980-11-28 1985-06-25 Minnesota Mining & Manufacturing Company Driver for rotating a magnetic playback head

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6032258B2 (en) * 1976-09-13 1985-07-26 ソニー株式会社 Automatic tracking control device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1062946B (en) * 1954-05-31 1959-08-06 Kurt Loeffler Dr Ing Device for scanning processes recorded on magnetic tape or on optical sound carriers, in particular of electromechanical measurement quantities, for the purpose of optical reproduction by means of oscilloscopes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576553A (en) * 1968-04-29 1971-04-27 Ibm Data transducer positioning servo utilizing compensation network and phase-displaced servo signal pairs of like frequency
US4433351A (en) * 1980-11-28 1984-02-21 Minnesota Mining And Manufacturing Company System for reducing phase error in multitrack magnetic recording
US4525696A (en) * 1980-11-28 1985-06-25 Minnesota Mining & Manufacturing Company Driver for rotating a magnetic playback head

Also Published As

Publication number Publication date
DE1188846B (en) 1965-03-11

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