JPS55159682A - Tracking unit for magnetic head - Google Patents

Tracking unit for magnetic head

Info

Publication number
JPS55159682A
JPS55159682A JP6779279A JP6779279A JPS55159682A JP S55159682 A JPS55159682 A JP S55159682A JP 6779279 A JP6779279 A JP 6779279A JP 6779279 A JP6779279 A JP 6779279A JP S55159682 A JPS55159682 A JP S55159682A
Authority
JP
Japan
Prior art keywords
head
magnetic head
displacement
signal
error 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.)
Granted
Application number
JP6779279A
Other languages
Japanese (ja)
Other versions
JPS639435B2 (en
Inventor
Hitoshi Sakamoto
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 JP6779279A priority Critical patent/JPS55159682A/en
Publication of JPS55159682A publication Critical patent/JPS55159682A/en
Publication of JPS639435B2 publication Critical patent/JPS639435B2/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)

Abstract

PURPOSE:To obtain accurate tracking error signal, by taking the corelativity between the amplitude signal of head reproduced output and the detection signal of the displacement means, in the tracking unit having shifting the magnetic head. CONSTITUTION:A magnetic head tracking circuit is constituted with a tape speed detection circuit 12, head shift amount detection circuit 13, flyback voltage forming circuit 14, integrator 15, oscillator 16, and error signal forming circuit 17 as major devices. Further, a magnetic head 5 is fitted on a bimorph plate 7 having a strain gauge 33 and the displacement of the head 5 is detected as the displacement of the bimorph plate 7. With this constitution, the amplitude sample hold signal at the specified position at the horizontal scanning section having almost constant amplitude of the head reproducing output and the output of the means shifting the head boradwise the track are taken for the corelativity. Accordingly, the error signal obtained is not effected from the content of picture resulting in producing very accuracy.
JP6779279A 1979-05-31 1979-05-31 Tracking unit for magnetic head Granted JPS55159682A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6779279A JPS55159682A (en) 1979-05-31 1979-05-31 Tracking unit for magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6779279A JPS55159682A (en) 1979-05-31 1979-05-31 Tracking unit for magnetic head

Publications (2)

Publication Number Publication Date
JPS55159682A true JPS55159682A (en) 1980-12-11
JPS639435B2 JPS639435B2 (en) 1988-02-29

Family

ID=13355147

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6779279A Granted JPS55159682A (en) 1979-05-31 1979-05-31 Tracking unit for magnetic head

Country Status (1)

Country Link
JP (1) JPS55159682A (en)

Also Published As

Publication number Publication date
JPS639435B2 (en) 1988-02-29

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