GB1409534A - Erasure of tape-carried information - Google Patents

Erasure of tape-carried information

Info

Publication number
GB1409534A
GB1409534A GB356772A GB356772A GB1409534A GB 1409534 A GB1409534 A GB 1409534A GB 356772 A GB356772 A GB 356772A GB 356772 A GB356772 A GB 356772A GB 1409534 A GB1409534 A GB 1409534A
Authority
GB
United Kingdom
Prior art keywords
tape
erasure
carried information
jan
information
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.)
Expired
Application number
GB356772A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB356772A priority Critical patent/GB1409534A/en
Publication of GB1409534A publication Critical patent/GB1409534A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/80—Television signal recording using electrostatic recording
    • H04N5/82—Television signal recording using electrostatic recording using deformable thermoplastic recording medium
    • 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
    • G11B11/03—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 deforming with non-mechanical means, e.g. laser, beam of particles
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/003—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0055—Erasing

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

1409534 Erasing records MARCONI CO Ltd 16 Jan 1973 [26 Jan 1972] 3567/72 Heading G5R A topographical recording 8 on a thermoplastic tape 6 is erased by infra-red heating from a source 1.
GB356772A 1972-01-26 1972-01-26 Erasure of tape-carried information Expired GB1409534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB356772A GB1409534A (en) 1972-01-26 1972-01-26 Erasure of tape-carried information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB356772A GB1409534A (en) 1972-01-26 1972-01-26 Erasure of tape-carried information

Publications (1)

Publication Number Publication Date
GB1409534A true GB1409534A (en) 1975-10-08

Family

ID=9760769

Family Applications (1)

Application Number Title Priority Date Filing Date
GB356772A Expired GB1409534A (en) 1972-01-26 1972-01-26 Erasure of tape-carried information

Country Status (1)

Country Link
GB (1) GB1409534A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0509007A1 (en) * 1990-01-02 1992-10-21 Tandy Corporation System and method for erasing light-responsive optical disks
EP0514589A2 (en) * 1991-05-20 1992-11-25 Samsung Electronics Co. Ltd. Method and apparatus for erasing information from optical recording tape with a thermo-deforming layer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0509007A1 (en) * 1990-01-02 1992-10-21 Tandy Corporation System and method for erasing light-responsive optical disks
EP0509007A4 (en) * 1990-01-02 1993-01-13 Tandy Corporation System and method for erasing light-responsive optical disks
EP0514589A2 (en) * 1991-05-20 1992-11-25 Samsung Electronics Co. Ltd. Method and apparatus for erasing information from optical recording tape with a thermo-deforming layer
EP0514589A3 (en) * 1991-05-20 1993-01-20 Samsung Electronics Co. Ltd. Method and apparatus for erasing information from optical recording tape with a thermo-deforming layer

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee