JPS57158011A - Video signal recording and reproducing device - Google Patents

Video signal recording and reproducing device

Info

Publication number
JPS57158011A
JPS57158011A JP56041688A JP4168881A JPS57158011A JP S57158011 A JPS57158011 A JP S57158011A JP 56041688 A JP56041688 A JP 56041688A JP 4168881 A JP4168881 A JP 4168881A JP S57158011 A JPS57158011 A JP S57158011A
Authority
JP
Japan
Prior art keywords
plates
video signal
reproducing device
twisted
signal recording
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
JP56041688A
Other languages
Japanese (ja)
Inventor
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 JP56041688A priority Critical patent/JPS57158011A/en
Publication of JPS57158011A publication Critical patent/JPS57158011A/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 a small-sized, lightweight VTR by scanning a magnetic head, which performs reciprocal linear motion, nearly at right angles to the running direction of a magnetic tape. CONSTITUTION:A piezoelectric ceramic plate constituting an element 18 is divided into two in the widthwise direction of the element 18 to form a couple of ceranic plates 20a and 21a and another couple of plates 20b and 21b. Control voltages E1 and E2 for those couples are applied indepently, and the voltages E1 and E2 are applied to only the ceramic plates 20b and 21a firsdently. When the voltage E1 is made high and the voltage E2 is zero, the element 18 is twisted by +alpha deg. in a direction D and when E1 is zero and the E2 is made high, it is twisted by +alpha deg. in a direction F.
JP56041688A 1981-03-24 1981-03-24 Video signal recording and reproducing device Pending JPS57158011A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56041688A JPS57158011A (en) 1981-03-24 1981-03-24 Video signal recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56041688A JPS57158011A (en) 1981-03-24 1981-03-24 Video signal recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS57158011A true JPS57158011A (en) 1982-09-29

Family

ID=12615358

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56041688A Pending JPS57158011A (en) 1981-03-24 1981-03-24 Video signal recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS57158011A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01151017A (en) * 1987-12-09 1989-06-13 Teac Corp Magnetic head device for video tape recorder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01151017A (en) * 1987-12-09 1989-06-13 Teac Corp Magnetic head device for video tape recorder

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