JPS5654625A - Multihead - Google Patents

Multihead

Info

Publication number
JPS5654625A
JPS5654625A JP12853679A JP12853679A JPS5654625A JP S5654625 A JPS5654625 A JP S5654625A JP 12853679 A JP12853679 A JP 12853679A JP 12853679 A JP12853679 A JP 12853679A JP S5654625 A JPS5654625 A JP S5654625A
Authority
JP
Japan
Prior art keywords
heads
reading
multiheads
rows
magnetic 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
JP12853679A
Other languages
Japanese (ja)
Inventor
Nobuo Shimoma
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP12853679A priority Critical patent/JPS5654625A/en
Publication of JPS5654625A publication Critical patent/JPS5654625A/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
    • G11B5/488—Disposition of heads
    • G11B5/4893—Disposition of heads relative to moving tape
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/20—Signal processing not specific to the method of recording or reproducing; Circuits therefor for correction of skew for multitrack recording
    • 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
    • G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/12—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

PURPOSE:To ensure a steady reading of signals regardless of the track variance of the magnetic tape, by providing a plurality of the rows of multiheads which are formed by disposing several heads in the direction vertical to the travelling direction of the magnetic tape and with a shift secured in the same direction and then using these rows of the multiheads selectively. CONSTITUTION:The rows of the multiheads comprising the track variance reading heads 1A (1B, 1C) plus the signal reading heads 2A-nA (2B-nB, 2C-nC) are disposed as shown in the figure (a). Thus the n-channel multihead 5 is formed. For the head 5, the magnetic outputs of the heads 1A, 1B and 1C are detected through the amplitude ratio comparator 7. And if the signal supplied from 1B is large, only the switch circuits S2B-SnB are turned on. And the reading signals from the heads 2B-nB are made to pass through the delay circuits D2B-DnB to give a correction to the phase and then delivered to the output circuits 8-9 (figure b).
JP12853679A 1979-10-05 1979-10-05 Multihead Pending JPS5654625A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12853679A JPS5654625A (en) 1979-10-05 1979-10-05 Multihead

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12853679A JPS5654625A (en) 1979-10-05 1979-10-05 Multihead

Publications (1)

Publication Number Publication Date
JPS5654625A true JPS5654625A (en) 1981-05-14

Family

ID=14987174

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12853679A Pending JPS5654625A (en) 1979-10-05 1979-10-05 Multihead

Country Status (1)

Country Link
JP (1) JPS5654625A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0590226A1 (en) * 1992-09-22 1994-04-06 Tandberg Data A/S Magnetic tape storage unit with improved ability to read data by using a set of multiple read elements
WO1998000838A1 (en) * 1996-06-28 1998-01-08 Deutsche Thomson Brandt Multitrack tape device using a movable magnetic head with a planar surface and comprising tape supporting means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0590226A1 (en) * 1992-09-22 1994-04-06 Tandberg Data A/S Magnetic tape storage unit with improved ability to read data by using a set of multiple read elements
WO1998000838A1 (en) * 1996-06-28 1998-01-08 Deutsche Thomson Brandt Multitrack tape device using a movable magnetic head with a planar surface and comprising tape supporting means

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