JPS56783A - Still reproducing unit for video tape recorder - Google Patents

Still reproducing unit for video tape recorder

Info

Publication number
JPS56783A
JPS56783A JP7651979A JP7651979A JPS56783A JP S56783 A JPS56783 A JP S56783A JP 7651979 A JP7651979 A JP 7651979A JP 7651979 A JP7651979 A JP 7651979A JP S56783 A JPS56783 A JP S56783A
Authority
JP
Japan
Prior art keywords
still
head
heads
unit
video tape
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
JP7651979A
Other languages
Japanese (ja)
Inventor
Tadao Nagai
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.)
Teac Corp
Original Assignee
Teac 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 Teac Corp filed Critical Teac Corp
Priority to JP7651979A priority Critical patent/JPS56783A/en
Publication of JPS56783A publication Critical patent/JPS56783A/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 increase the video quality of still picture in helical scanning type VTR, by moving the height of the rotary head in a given speed, at still reproduction. CONSTITUTION:The head oscillation unit 13 which oscillates the rotary heads 11, 12 in response to still operation is provided. In this unit 13, the height of the heads 11, 12 is respectively changed in linear operation in the moving speed of Vh=P/Tf (where; P is the track pitch and Tf is field period), and the operation returned to original is taken as unit period, and oscillation is made in synchronizing with the revolution of the head. That is, at still operation, the heads 11, 12 supported with the levers 20, 21 respectively are oscillated with the cam provided under the still control rod 30. Thus, the trace angle of the head is coincided with the slope angle of the track, allowing to obtain the still picture of good quality.
JP7651979A 1979-06-18 1979-06-18 Still reproducing unit for video tape recorder Pending JPS56783A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7651979A JPS56783A (en) 1979-06-18 1979-06-18 Still reproducing unit for video tape recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7651979A JPS56783A (en) 1979-06-18 1979-06-18 Still reproducing unit for video tape recorder

Publications (1)

Publication Number Publication Date
JPS56783A true JPS56783A (en) 1981-01-07

Family

ID=13607519

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7651979A Pending JPS56783A (en) 1979-06-18 1979-06-18 Still reproducing unit for video tape recorder

Country Status (1)

Country Link
JP (1) JPS56783A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS499919A (en) * 1972-05-22 1974-01-29

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS499919A (en) * 1972-05-22 1974-01-29

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