GB2162992B - A method of recording a computer program - Google Patents
A method of recording a computer programInfo
- Publication number
- GB2162992B GB2162992B GB08518404A GB8518404A GB2162992B GB 2162992 B GB2162992 B GB 2162992B GB 08518404 A GB08518404 A GB 08518404A GB 8518404 A GB8518404 A GB 8518404A GB 2162992 B GB2162992 B GB 2162992B
- Authority
- GB
- United Kingdom
- Prior art keywords
- recording
- computer program
- 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.)
- Expired
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)
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 GB8518404D0 (en) | 1985-08-29 |
GB2162992A GB2162992A (en) | 1986-02-12 |
GB2162992B true 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)
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)
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 |
DE3375854D1 (en) * | 1982-11-22 | 1988-04-07 | Dysan Corp | 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 |
-
1985
- 1985-07-22 GB GB08518404A patent/GB2162992B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB8518404D0 (en) | 1985-08-29 |
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 |