JPS56153529A - Detector for height of head in magnetic recorder and reproducer - Google Patents

Detector for height of head in magnetic recorder and reproducer

Info

Publication number
JPS56153529A
JPS56153529A JP5391380A JP5391380A JPS56153529A JP S56153529 A JPS56153529 A JP S56153529A JP 5391380 A JP5391380 A JP 5391380A JP 5391380 A JP5391380 A JP 5391380A JP S56153529 A JPS56153529 A JP S56153529A
Authority
JP
Japan
Prior art keywords
head
height
rotating
sensing body
heads
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
JP5391380A
Other languages
Japanese (ja)
Inventor
Toshio Kaneshiro
Seisuke Hirakuri
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP5391380A priority Critical patent/JPS56153529A/en
Publication of JPS56153529A publication Critical patent/JPS56153529A/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

Landscapes

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

Abstract

PURPOSE:To keep the head at a given height, by providing the magnetism sensing body close to the rotating head at the range of rotation where no signal recording for the rotating head is possible, and using the signal reproduced from the sensing body with the rotating head as the height position detecting for the head. CONSTITUTION:Reference signals fp1 and fp2 are recorded in partly overlapped way on the magnetism sensing body 61 in the lengthwide direction of the Ni-plated surface of arc shaped having the same radius as that of the rotating drum. This height is located near the rotating heads A, B of a given height. The position is in the range of rotation where no signal recording is made for the rotating heads A, B. When the rotating head A, B pass the front of the magnetism sensing body 61 alternately, the reproduced reference signals fp1, fp2 are supplied to the differential amplifier 37 via the switching circuits 32a, 32b, amplifier 34, band pass filters 35a, 35b and detection circuits 36a, 36b, the error signal is inputted to the driving coil 21 and the heads A, B are kept at a given height.
JP5391380A 1980-04-23 1980-04-23 Detector for height of head in magnetic recorder and reproducer Pending JPS56153529A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5391380A JPS56153529A (en) 1980-04-23 1980-04-23 Detector for height of head in magnetic recorder and reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5391380A JPS56153529A (en) 1980-04-23 1980-04-23 Detector for height of head in magnetic recorder and reproducer

Publications (1)

Publication Number Publication Date
JPS56153529A true JPS56153529A (en) 1981-11-27

Family

ID=12955944

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5391380A Pending JPS56153529A (en) 1980-04-23 1980-04-23 Detector for height of head in magnetic recorder and reproducer

Country Status (1)

Country Link
JP (1) JPS56153529A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03216809A (en) * 1990-01-20 1991-09-24 Mitsubishi Electric Corp Rotary magnetic head device
JPH03276413A (en) * 1990-03-27 1991-12-06 Mitsubishi Electric Corp Magnetic recording and reproducing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03216809A (en) * 1990-01-20 1991-09-24 Mitsubishi Electric Corp Rotary magnetic head device
JPH03276413A (en) * 1990-03-27 1991-12-06 Mitsubishi Electric Corp Magnetic recording and reproducing device

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