JPS54147818A - Position control device of rotary heads - Google Patents

Position control device of rotary heads

Info

Publication number
JPS54147818A
JPS54147818A JP5680178A JP5680178A JPS54147818A JP S54147818 A JPS54147818 A JP S54147818A JP 5680178 A JP5680178 A JP 5680178A JP 5680178 A JP5680178 A JP 5680178A JP S54147818 A JPS54147818 A JP S54147818A
Authority
JP
Japan
Prior art keywords
output
rotary heads
oscillator
modulated
extracted
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
JP5680178A
Other languages
Japanese (ja)
Other versions
JPS6228486B2 (en
Inventor
Yoshimi Watanabe
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 JP5680178A priority Critical patent/JPS54147818A/en
Publication of JPS54147818A publication Critical patent/JPS54147818A/en
Publication of JPS6228486B2 publication Critical patent/JPS6228486B2/ja
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
    • G11B5/584—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 Velocity Or Acceleration (AREA)

Abstract

PURPOSE:To improve the S/N of the control signals of rotary heads and obtain good video signals by modulating sine waves by the driving signal and transmitting the same. CONSTITUTION:The reproduction signals from rotary heads 11a, 11b are outputted to terminal 35 via rotary transformer 21 and are also supplied to a tuning circuit 48, from which the horizontal synchronizing signal components are extracted and are sample held 49 by the horizontal synchronizing signal, whereby oblong frequencies are extracted 5 and are sychronously detected 52 by the output of an oscillator 36. The correction voltage is formed by an LPF 53 and is superposed 37 to the output of the oscillator 36. The output control voltage thereof is FM-modulated 39 and is converted to sine waves by a BPF 40, which are then FM-modulated 44 via rotary transformer 24 and the control voltages of sine waveform are applied via drive circuit 45 to the bimorph plates of head mounting devices 12a, 12b.
JP5680178A 1978-05-12 1978-05-12 Position control device of rotary heads Granted JPS54147818A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5680178A JPS54147818A (en) 1978-05-12 1978-05-12 Position control device of rotary heads

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5680178A JPS54147818A (en) 1978-05-12 1978-05-12 Position control device of rotary heads

Publications (2)

Publication Number Publication Date
JPS54147818A true JPS54147818A (en) 1979-11-19
JPS6228486B2 JPS6228486B2 (en) 1987-06-20

Family

ID=13037493

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5680178A Granted JPS54147818A (en) 1978-05-12 1978-05-12 Position control device of rotary heads

Country Status (1)

Country Link
JP (1) JPS54147818A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0397115A (en) * 1989-09-11 1991-04-23 Mitsubishi Electric Corp Magnetic reproducing device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS499919A (en) * 1972-05-22 1974-01-29

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS499919A (en) * 1972-05-22 1974-01-29

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0397115A (en) * 1989-09-11 1991-04-23 Mitsubishi Electric Corp Magnetic reproducing device

Also Published As

Publication number Publication date
JPS6228486B2 (en) 1987-06-20

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