JPS56107332A - Automatic tracking device - Google Patents

Automatic tracking device

Info

Publication number
JPS56107332A
JPS56107332A JP835280A JP835280A JPS56107332A JP S56107332 A JPS56107332 A JP S56107332A JP 835280 A JP835280 A JP 835280A JP 835280 A JP835280 A JP 835280A JP S56107332 A JPS56107332 A JP S56107332A
Authority
JP
Japan
Prior art keywords
signal
tracking
head
horizontal synchronizing
reference signal
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
JP835280A
Other languages
Japanese (ja)
Inventor
Takeo Seki
Susumu Kasai
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 Denshi KK
Original Assignee
Hitachi Denshi KK
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 Denshi KK filed Critical Hitachi Denshi KK
Priority to JP835280A priority Critical patent/JPS56107332A/en
Publication of JPS56107332A publication Critical patent/JPS56107332A/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 obtain best tracking with sure operation, by detecting the shift in tracking from the periodical information time relation included in the signal played back with the magnetic head, i.e., clock information. CONSTITUTION:The horizontal synchronizing signal is picked up from the television signal reproduced with a magnetic head 4 via a preamplifier 11, horizontal synchronizing signal separation circuit 12 or the like. On the other hand, the reference signal generating circuit 13 produces the pulse train reference signal having the equal period as the horizontal scanning period in phase- synchronizing with the revolution of a drum. This horizontal synchronizing signal and the reference signal are given to the phase comparison circuit 14 and a control circuit 15, and the control signal is fed to a bimorph plate 7 to deflect the head 4 for a prescribed amount toward the direction in response to the time difference signal. Since the phase relation between the horizontal synchronizing signal and the reference signal reproduced when the head 4 scans is changed according to the tracking of the head 4, the control signal corresponding to this change is fed to the plate 7 for correct tracking. With this constitution, the best tracking can be made.
JP835280A 1980-01-29 1980-01-29 Automatic tracking device Pending JPS56107332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP835280A JPS56107332A (en) 1980-01-29 1980-01-29 Automatic tracking device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP835280A JPS56107332A (en) 1980-01-29 1980-01-29 Automatic tracking device

Publications (1)

Publication Number Publication Date
JPS56107332A true JPS56107332A (en) 1981-08-26

Family

ID=11690825

Family Applications (1)

Application Number Title Priority Date Filing Date
JP835280A Pending JPS56107332A (en) 1980-01-29 1980-01-29 Automatic tracking device

Country Status (1)

Country Link
JP (1) JPS56107332A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60144083A (en) * 1983-12-31 1985-07-30 Sony Corp Dynamic tracking head controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60144083A (en) * 1983-12-31 1985-07-30 Sony Corp Dynamic tracking head controller

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