JPS56165964A - Data protector for floppy disc - Google Patents

Data protector for floppy disc

Info

Publication number
JPS56165964A
JPS56165964A JP6887980A JP6887980A JPS56165964A JP S56165964 A JPS56165964 A JP S56165964A JP 6887980 A JP6887980 A JP 6887980A JP 6887980 A JP6887980 A JP 6887980A JP S56165964 A JPS56165964 A JP S56165964A
Authority
JP
Japan
Prior art keywords
floppy disc
disc
door
counter
coincidence
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
JP6887980A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6341149B2 (enrdf_load_stackoverflow
Inventor
Hidetoshi Sugiyama
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Priority to JP6887980A priority Critical patent/JPS56165964A/ja
Publication of JPS56165964A publication Critical patent/JPS56165964A/ja
Publication of JPS6341149B2 publication Critical patent/JPS6341149B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
JP6887980A 1980-05-26 1980-05-26 Data protector for floppy disc Granted JPS56165964A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6887980A JPS56165964A (en) 1980-05-26 1980-05-26 Data protector for floppy disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6887980A JPS56165964A (en) 1980-05-26 1980-05-26 Data protector for floppy disc

Publications (2)

Publication Number Publication Date
JPS56165964A true JPS56165964A (en) 1981-12-19
JPS6341149B2 JPS6341149B2 (enrdf_load_stackoverflow) 1988-08-16

Family

ID=13386382

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6887980A Granted JPS56165964A (en) 1980-05-26 1980-05-26 Data protector for floppy disc

Country Status (1)

Country Link
JP (1) JPS56165964A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5778669A (en) * 1980-10-31 1982-05-17 Toshiba Corp Information recording device
JPS5899863A (ja) * 1981-12-10 1983-06-14 Fujitsu Ltd フアイル保護方式
JPS60187959U (ja) * 1984-05-23 1985-12-12 株式会社山武 外部記憶装置の制御装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5778669A (en) * 1980-10-31 1982-05-17 Toshiba Corp Information recording device
JPS5899863A (ja) * 1981-12-10 1983-06-14 Fujitsu Ltd フアイル保護方式
JPS60187959U (ja) * 1984-05-23 1985-12-12 株式会社山武 外部記憶装置の制御装置

Also Published As

Publication number Publication date
JPS6341149B2 (enrdf_load_stackoverflow) 1988-08-16

Similar Documents

Publication Publication Date Title
MY103353A (en) Method of rapidly opening disk files indentified by path names
SE9001035L (sv) Identifieringselement
JPS5762061A (en) Copying device equipped with sorter
JPS56165964A (en) Data protector for floppy disc
ES483881A1 (es) Procedimiento para la direccion electronica de impulsos de peticion en un generador manual giratorio, en una memoria electronica
JPS5759271A (en) Document producing device containing writing protecting function
JPS5580174A (en) Certification unit
JPS53117350A (en) Electronic desk calculator
SE8206595D0 (sv) Anordning vid las
JPS5567736A (en) Micro-image retrieval projecting device
JPS5212100A (en) Locking device
JPS57123464A (en) Disket collating system
Wilkey et al. Graded safeguards: determination of attractiveness levels for special nuclear material
Pounder Police computers and the metropolitan police. Part III: Data protection and the control of police computers.
Dahmke CP/M Plus.
Nemoshkalenko et al. Energy-Zone Structure of TiLi
SCHULTHEISS Data security and data protection in the case of data processing systems
JPS5723161A (en) Access control system of floppy disk
JPS6446825A (en) Disk controller with file protecting function
ES256346U (es) Un dispositivo de cierre para puertas y ventanas correderas
Konopolsky Close Look At IMS/VS 1. 2.
FR2450698A1 (fr) Dispositif de verrouillage pour support d'etiquette ou support de suspension en particulier pour classeurs suspendus
Harkness FilePro 16 and FilePro 16 Plus.
Ferrer CONSER'79: Average tags per record
GB988969A (en) Improvements relating to label, ticket or like cutting and collecting cash registers