JPS5465513A - Tracking servo apparatus - Google Patents

Tracking servo apparatus

Info

Publication number
JPS5465513A
JPS5465513A JP13224777A JP13224777A JPS5465513A JP S5465513 A JPS5465513 A JP S5465513A JP 13224777 A JP13224777 A JP 13224777A JP 13224777 A JP13224777 A JP 13224777A JP S5465513 A JPS5465513 A JP S5465513A
Authority
JP
Japan
Prior art keywords
signal
heads
circuit
eomega
limiter
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
JP13224777A
Other languages
Japanese (ja)
Inventor
Kazuo Yamagiwa
Masatoshi Kono
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP13224777A priority Critical patent/JPS5465513A/en
Publication of JPS5465513A publication Critical patent/JPS5465513A/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)

Abstract

PURPOSE:To perform servo controlling of playback heads with high accuracy and high stability by passing the signal showing the envelope of reproduction outputs through a limiter and phase comparing the same with alternating signals and supplying the compared output thereof to an electro-mechanical transducer. CONSTITUTION:The FM signal Sf from a switch circuit 3 is supplied to an envelope detection circuit 24, whereby it is made to the detection signal Sd showing the level of the signal Sf. After the higher harmonic components thereof are removed with a trap circuit 25, the signal is passed through a limiter 26, from where it is applied to a phase comparator 27 and at the same time alternating signals So are applied from an oscillation circuit 21. The compared output thereof is then supplied to an LPF 28, whereby the output signal Eomega is obtained. This signal is applied to a bimorph plate 1 through adder 22 and cmplifier 23. The polarities and bveles of the signal Eomega hange in square waveform in the mean center spacing of the heads 1A, 1B and track 9, in correspondence to which the bimorph plate 11 shifts. Thereby, the plabyack heads may be servo-controlled with high accuracy and high stability.
JP13224777A 1977-11-04 1977-11-04 Tracking servo apparatus Pending JPS5465513A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13224777A JPS5465513A (en) 1977-11-04 1977-11-04 Tracking servo apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13224777A JPS5465513A (en) 1977-11-04 1977-11-04 Tracking servo apparatus

Publications (1)

Publication Number Publication Date
JPS5465513A true JPS5465513A (en) 1979-05-26

Family

ID=15076798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13224777A Pending JPS5465513A (en) 1977-11-04 1977-11-04 Tracking servo apparatus

Country Status (1)

Country Link
JP (1) JPS5465513A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117603A (en) * 1976-03-22 1977-10-03 Ampex Vehicle scanning and tracking

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117603A (en) * 1976-03-22 1977-10-03 Ampex Vehicle scanning and tracking

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