JPS5778621A - Head position control device of magnetic picture recording and reproducing equipment - Google Patents

Head position control device of magnetic picture recording and reproducing equipment

Info

Publication number
JPS5778621A
JPS5778621A JP55153743A JP15374380A JPS5778621A JP S5778621 A JPS5778621 A JP S5778621A JP 55153743 A JP55153743 A JP 55153743A JP 15374380 A JP15374380 A JP 15374380A JP S5778621 A JPS5778621 A JP S5778621A
Authority
JP
Japan
Prior art keywords
track shift
control device
position control
head position
perturbation
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
JP55153743A
Other languages
Japanese (ja)
Inventor
Kotaro Kawamura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55153743A priority Critical patent/JPS5778621A/en
Publication of JPS5778621A publication Critical patent/JPS5778621A/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
    • G11B5/58—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
    • G11B5/588—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 by controlling the position of the rotating heads
    • G11B5/592—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 by controlling the position of the rotating heads using bimorph elements supporting the heads

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

PURPOSE:To obtain a head position control device whose loop gain is high, by constituting it so that a track shift exceeding the perturbation width is detected by an envelope of a reproducing RF signal. CONSTITUTION:Error voltage obtained from an adding circuit 24 is added with not only error voltage obtained from synchronizing detection but also a perturbation signal by an adding circuit 13, is amplified by a bimorph driving circuit 14, and drives bimorphs 4a, 4b. As a result, even if a track shift exceeds the perturbation width, tracking error voltage being proportional to the extent of shift is obtained. Also, the loop gain can be varied depending on whether the track shift has exceeded the perturbation width or not, therefore, for instance, in case when the track shift is large, it is also possible to corrent the track shift swiftly.
JP55153743A 1980-11-04 1980-11-04 Head position control device of magnetic picture recording and reproducing equipment Pending JPS5778621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55153743A JPS5778621A (en) 1980-11-04 1980-11-04 Head position control device of magnetic picture recording and reproducing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55153743A JPS5778621A (en) 1980-11-04 1980-11-04 Head position control device of magnetic picture recording and reproducing equipment

Publications (1)

Publication Number Publication Date
JPS5778621A true JPS5778621A (en) 1982-05-17

Family

ID=15569132

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55153743A Pending JPS5778621A (en) 1980-11-04 1980-11-04 Head position control device of magnetic picture recording and reproducing equipment

Country Status (1)

Country Link
JP (1) JPS5778621A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60219618A (en) * 1984-04-16 1985-11-02 Matsushita Electric Ind Co Ltd Tracking control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60219618A (en) * 1984-04-16 1985-11-02 Matsushita Electric Ind Co Ltd Tracking control system
JPH0532806B2 (en) * 1984-04-16 1993-05-18 Matsushita Electric Ind Co Ltd

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