FR2344925A1 - Dispositif de mise en place de la protection ecriture sur bande magnetique - Google Patents

Dispositif de mise en place de la protection ecriture sur bande magnetique

Info

Publication number
FR2344925A1
FR2344925A1 FR7608411A FR7608411A FR2344925A1 FR 2344925 A1 FR2344925 A1 FR 2344925A1 FR 7608411 A FR7608411 A FR 7608411A FR 7608411 A FR7608411 A FR 7608411A FR 2344925 A1 FR2344925 A1 FR 2344925A1
Authority
FR
France
Prior art keywords
ring
spool
slot
tape
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.)
Granted
Application number
FR7608411A
Other languages
English (en)
French (fr)
Other versions
FR2344925B3 (US06826419-20041130-M00005.png
Inventor
Alain Sorge
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7608411A priority Critical patent/FR2344925A1/fr
Publication of FR2344925A1 publication Critical patent/FR2344925A1/fr
Application granted granted Critical
Publication of FR2344925B3 publication Critical patent/FR2344925B3/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/28—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs
    • G11B23/288—Protecting disks from being written or overwritten

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
FR7608411A 1976-03-18 1976-03-18 Dispositif de mise en place de la protection ecriture sur bande magnetique Granted FR2344925A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7608411A FR2344925A1 (fr) 1976-03-18 1976-03-18 Dispositif de mise en place de la protection ecriture sur bande magnetique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7608411A FR2344925A1 (fr) 1976-03-18 1976-03-18 Dispositif de mise en place de la protection ecriture sur bande magnetique

Publications (2)

Publication Number Publication Date
FR2344925A1 true FR2344925A1 (fr) 1977-10-14
FR2344925B3 FR2344925B3 (US06826419-20041130-M00005.png) 1978-12-15

Family

ID=9170821

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7608411A Granted FR2344925A1 (fr) 1976-03-18 1976-03-18 Dispositif de mise en place de la protection ecriture sur bande magnetique

Country Status (1)

Country Link
FR (1) FR2344925A1 (US06826419-20041130-M00005.png)

Also Published As

Publication number Publication date
FR2344925B3 (US06826419-20041130-M00005.png) 1978-12-15

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Legal Events

Date Code Title Description
ST Notification of lapse