JPS5573925A - Head tracking unit - Google Patents

Head tracking unit

Info

Publication number
JPS5573925A
JPS5573925A JP14727778A JP14727778A JPS5573925A JP S5573925 A JPS5573925 A JP S5573925A JP 14727778 A JP14727778 A JP 14727778A JP 14727778 A JP14727778 A JP 14727778A JP S5573925 A JPS5573925 A JP S5573925A
Authority
JP
Japan
Prior art keywords
head
magnetic
fixed
base
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
JP14727778A
Other languages
Japanese (ja)
Inventor
Yoshihiro Kusanagi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14727778A priority Critical patent/JPS5573925A/en
Publication of JPS5573925A publication Critical patent/JPS5573925A/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
    • G11B5/54—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 into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5504—Track change, selection or acquisition by displacement of the head across tape tracks
    • G11B5/5508—Control circuits therefor

Abstract

PURPOSE:To detect the position of a magnetic head judging from ON-OFF states of a switch which detects a magnetic-head fitting base being near a reference track and that which detects one position of a motor shaft in a single rotation. CONSTITUTION:Magnetic head 12, arranged in contact with running magnetic tape 11 of any fixed head type VTR, is fixed to head base 13 with female screw 16. Male screw part 15, moving this head base 13 in the width direction of magnetic tape 11, is rotated by driving pulse motor 21 through pulley 24. Then, microswitches 28 and 29 are provided opposing to set element 27 fixed on the reverse surface of head base 13 and motor shaft 20. Only when magnetic head 12 reaches the lowermost track (of four ones in the figure) through ON-OFF operations of microswithces according to positions of tracks on tape 11, a control circuit is connected to GND, thereby prevending magnetic head 12 from further lowering.
JP14727778A 1978-11-30 1978-11-30 Head tracking unit Pending JPS5573925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14727778A JPS5573925A (en) 1978-11-30 1978-11-30 Head tracking unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14727778A JPS5573925A (en) 1978-11-30 1978-11-30 Head tracking unit

Publications (1)

Publication Number Publication Date
JPS5573925A true JPS5573925A (en) 1980-06-04

Family

ID=15426563

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14727778A Pending JPS5573925A (en) 1978-11-30 1978-11-30 Head tracking unit

Country Status (1)

Country Link
JP (1) JPS5573925A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5718180U (en) * 1980-06-19 1982-01-29
US5034829A (en) * 1987-08-12 1991-07-23 Deutsche Thomson-Brandt Gmbh Track positioning arrangement in a head wheel for a recorder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5179309A (en) * 1974-12-31 1976-07-10 Tokyo Shibaura Electric Co ENDOSUITSUCHI
JPS5350809A (en) * 1976-10-20 1978-05-09 Toshiba Corp End switch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5179309A (en) * 1974-12-31 1976-07-10 Tokyo Shibaura Electric Co ENDOSUITSUCHI
JPS5350809A (en) * 1976-10-20 1978-05-09 Toshiba Corp End switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5718180U (en) * 1980-06-19 1982-01-29
US5034829A (en) * 1987-08-12 1991-07-23 Deutsche Thomson-Brandt Gmbh Track positioning arrangement in a head wheel for a recorder

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