JPS56114123A - Magnetic head dispalcing device - Google Patents

Magnetic head dispalcing device

Info

Publication number
JPS56114123A
JPS56114123A JP1660680A JP1660680A JPS56114123A JP S56114123 A JPS56114123 A JP S56114123A JP 1660680 A JP1660680 A JP 1660680A JP 1660680 A JP1660680 A JP 1660680A JP S56114123 A JPS56114123 A JP S56114123A
Authority
JP
Japan
Prior art keywords
reproducing
head
bimorph
multiplied speed
circuit
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
JP1660680A
Other languages
Japanese (ja)
Inventor
Kotaro Kawamura
Shinji Ozaki
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 Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1660680A priority Critical patent/JPS56114123A/en
Publication of JPS56114123A publication Critical patent/JPS56114123A/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

Abstract

PURPOSE:To make still picture reproducing without noise and reproducing in the multiplied speed possible with a simple circuit constitution, by making direction of deflection of two bimorph plates to the applied voltage opposite to each other and by applying the same signal to them. CONSTITUTION:In the two-head helical scanning magnetic recording and reproducing device, bimorph plate X of head A is turned over and is used as bimorph plate Y of head B, and magnetisms in displacement directions for the applied voltage are opposite to each other. Head switching pulse (a) is subjected to waveform conversion by integrating circuit 13 and is amplified through amplifying circuit 14 and driving circuit 15 and has the DC cut by capacitor C, and the DC voltage is added through resistance R, and it is applied to both bimorph plates to displace both heads in the direction vertical to the track. In case of the multiplied speed, the displacement direction is made reverse through inverter 12. As a result, still picture reproducing without noise and reproducing in the multiplied speed are possilbe with a single system.
JP1660680A 1980-02-15 1980-02-15 Magnetic head dispalcing device Pending JPS56114123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1660680A JPS56114123A (en) 1980-02-15 1980-02-15 Magnetic head dispalcing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1660680A JPS56114123A (en) 1980-02-15 1980-02-15 Magnetic head dispalcing device

Publications (1)

Publication Number Publication Date
JPS56114123A true JPS56114123A (en) 1981-09-08

Family

ID=11920952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1660680A Pending JPS56114123A (en) 1980-02-15 1980-02-15 Magnetic head dispalcing device

Country Status (1)

Country Link
JP (1) JPS56114123A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5573922A (en) * 1978-11-27 1980-06-04 Matsushita Electric Ind Co Ltd Rotary magnetic head unit
JPS5647923A (en) * 1979-09-25 1981-04-30 Victor Co Of Japan Ltd Magnetic head driver of rotary head type magnetic recording and reproducing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5573922A (en) * 1978-11-27 1980-06-04 Matsushita Electric Ind Co Ltd Rotary magnetic head unit
JPS5647923A (en) * 1979-09-25 1981-04-30 Victor Co Of Japan Ltd Magnetic head driver of rotary head type magnetic recording and reproducing device

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