JPS57117142A - Magnetic tape reproducing system - Google Patents

Magnetic tape reproducing system

Info

Publication number
JPS57117142A
JPS57117142A JP244881A JP244881A JPS57117142A JP S57117142 A JPS57117142 A JP S57117142A JP 244881 A JP244881 A JP 244881A JP 244881 A JP244881 A JP 244881A JP S57117142 A JPS57117142 A JP S57117142A
Authority
JP
Japan
Prior art keywords
magnetic tape
copying member
copied
optical spot
minute optical
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
JP244881A
Other languages
Japanese (ja)
Inventor
Makoto Iwahara
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP244881A priority Critical patent/JPS57117142A/en
Publication of JPS57117142A publication Critical patent/JPS57117142A/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
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • G11B11/10547—Heads for reproducing using optical beam of radiation interacting with the magnetisation of an intermediate transfer element, e.g. magnetic film, included in the head
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing

Abstract

PURPOSE:To eliminate the need for a rotating magnetic head, by performing the reproduction of information signals form a recorded magnetic tape through tracing of patterns on a magnetic tape copied on a copying member with a minute optical spot. CONSTITUTION:A recording trace pattern is copied to a copying member 2 by making the copying member 2 with a photomegneto effect closely contacted with a magnetic tape 1. The light beam from a laser light source 5 is polarized into a straight line with a polarizer 7 as thick parallel rays through a beam expander 6 consisting of convex lenses 6a, 6b. The light is deflected at a photo deflector 4 via a beam splitter 8, collected to a convex lens 3 and draws a linear trace on the copying member as minute optical spot.
JP244881A 1981-01-11 1981-01-11 Magnetic tape reproducing system Pending JPS57117142A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP244881A JPS57117142A (en) 1981-01-11 1981-01-11 Magnetic tape reproducing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP244881A JPS57117142A (en) 1981-01-11 1981-01-11 Magnetic tape reproducing system

Publications (1)

Publication Number Publication Date
JPS57117142A true JPS57117142A (en) 1982-07-21

Family

ID=11529556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP244881A Pending JPS57117142A (en) 1981-01-11 1981-01-11 Magnetic tape reproducing system

Country Status (1)

Country Link
JP (1) JPS57117142A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5459915A (en) * 1977-10-20 1979-05-15 Sony Corp Method and apparatus for reading of magnetic recording signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5459915A (en) * 1977-10-20 1979-05-15 Sony Corp Method and apparatus for reading of magnetic recording signal

Similar Documents

Publication Publication Date Title
EP0257713A3 (en) Magnetic recording media, systems using same, apparatus for use therewith and method of positioning a read/write head adjacent a magnetic recording medium
ATE36617T1 (en) OPTICAL RECORDER.
JPS5647933A (en) Optical signal head
DE69014663T2 (en) Optical disc recording system.
GB1285999A (en) Recorder and reproducer system
DE69031599D1 (en) Optical card data recording / reproducing apparatus
DE69321380T2 (en) Magneto-optical information recording and playback device
JPS6247841A (en) Storage carrier for optical information
JPS57117142A (en) Magnetic tape reproducing system
MY104123A (en) Optical head devices for use in recording and/or reproduction of information.
JPS5348504A (en) Optical recorder/reproducer
GB304848A (en) Improvements in or relating to sound recording
JPS6462838A (en) Optical pick-up
JPS5532249A (en) Optical recorder and reproducing device
JPS6452240A (en) Magneto-optical recording and reproducing device
JPS57203233A (en) Optical recorder and reproducer
JPS57169946A (en) Magnetic recorder and reproducer
BR8104924A (en) VIDEO RECORDING / REPRODUCTION MACHINE
JPS55163637A (en) Optical recorder/reproducer
JPS5362502A (en) Optical recording-reproducing apparatus
JPS541002A (en) Optical recording information reproducer
KR100248017B1 (en) Optical recording/reproducing method
JPS5570942A (en) Tracking error detector
JPS53147504A (en) Optical recording information reproducer
JPS54143606A (en) Optical recorder-reproducer