GB8518404D0 - Recording computer program - Google Patents

Recording computer program

Info

Publication number
GB8518404D0
GB8518404D0 GB858518404A GB8518404A GB8518404D0 GB 8518404 D0 GB8518404 D0 GB 8518404D0 GB 858518404 A GB858518404 A GB 858518404A GB 8518404 A GB8518404 A GB 8518404A GB 8518404 D0 GB8518404 D0 GB 8518404D0
Authority
GB
United Kingdom
Prior art keywords
computer program
recording computer
recording
program
computer
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
GB858518404A
Other versions
GB2162992B (en
GB2162992A (en
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.)
Sington E P C
Original Assignee
Sington E P C
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 Sington E P C filed Critical Sington E P C
Priority to GB08518404A priority Critical patent/GB2162992B/en
Publication of GB8518404D0 publication Critical patent/GB8518404D0/en
Publication of GB2162992A publication Critical patent/GB2162992A/en
Application granted granted Critical
Publication of GB2162992B publication Critical patent/GB2162992B/en
Expired 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
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0092—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors
    • G11B20/00927—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors wherein said defects or errors are generated on purpose, e.g. intended scratches
    • 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
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • 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
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00166—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
GB08518404A 1984-08-09 1985-07-22 A method of recording a computer program Expired GB2162992B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08518404A GB2162992B (en) 1984-08-09 1985-07-22 A method of recording a computer program

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8420294 1984-08-09
GB08518404A GB2162992B (en) 1984-08-09 1985-07-22 A method of recording a computer program

Publications (3)

Publication Number Publication Date
GB8518404D0 true GB8518404D0 (en) 1985-08-29
GB2162992A GB2162992A (en) 1986-02-12
GB2162992B GB2162992B (en) 1988-10-12

Family

ID=26288096

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08518404A Expired GB2162992B (en) 1984-08-09 1985-07-22 A method of recording a computer program

Country Status (1)

Country Link
GB (1) GB2162992B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0673221B2 (en) * 1985-07-27 1994-09-14 ティーディーケイ株式会社 Method for preventing duplication of magnetic recording medium
DE3851724T2 (en) * 1987-07-08 1995-05-04 Matsushita Electric Ind Co Ltd Method and device for protecting copy signals.
US5787068A (en) * 1996-11-07 1998-07-28 Imation Corp. Method and arrangement for preventing unauthorized duplication of optical discs using barriers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3319343A1 (en) * 1982-11-08 1984-05-10 Vault Corp METHOD AND DEVICE FOR THE IMPOSSIBILITY OF UNAUTHORIZED COPIES OF RECORDED DATA
EP0110511B1 (en) * 1982-11-22 1988-03-02 Dysan Corporation Method and apparatus for authenticating memory disk
IL68989A (en) * 1983-06-15 1985-03-31 Amiran Grynberg Diskette protection
GB2142765A (en) * 1983-07-04 1985-01-23 John William Hawkins Preventing unauthorised use of recorded information
US4577289A (en) * 1983-12-30 1986-03-18 International Business Machines Corporation Hardware key-on-disk system for copy-protecting magnetic storage media

Also Published As

Publication number Publication date
GB2162992B (en) 1988-10-12
GB2162992A (en) 1986-02-12

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Legal Events

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

Effective date: 19930722