ES8601540A1 - Un aparato para modificar la superficie de grabacion de un dispositivo de almacenamiento magnetico - Google Patents
Un aparato para modificar la superficie de grabacion de un dispositivo de almacenamiento magneticoInfo
- Publication number
- ES8601540A1 ES8601540A1 ES535515A ES535515A ES8601540A1 ES 8601540 A1 ES8601540 A1 ES 8601540A1 ES 535515 A ES535515 A ES 535515A ES 535515 A ES535515 A ES 535515A ES 8601540 A1 ES8601540 A1 ES 8601540A1
- Authority
- ES
- Spain
- Prior art keywords
- portions
- disk
- read operation
- recording surface
- recorded
- 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
- 238000000034 method Methods 0.000 title abstract 2
- 238000003486 chemical etching Methods 0.000 abstract 1
- 238000004049 embossing Methods 0.000 abstract 1
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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
-
- 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
- G11B20/00572—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium
- G11B20/00586—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the physical format of the recording medium
-
- 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
- G11B20/00659—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a control step which is implemented as an executable file stored on the record carrier
-
- 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
- G11B20/00949—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 said intentional errors occurring due to bad sectors, which are either physically destroyed or which are declared defective in the defect management information
-
- 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
- G11B23/281—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs by changing the physical properties of the record carrier
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/10—Indicating arrangements; Warning arrangements
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
-
- 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
- G11B2020/10916—Seeking data on the record carrier for preparing an access to a specific address
Abstract
APARATO PARA MODIFICAR LA SUPERFICIE DE GRABACION DE UN DISPOSITIVO DE ALMACENAMIENTO MAGNETICO EN PARTICULAR PARA COMPROBAR LA AUTENTIFICACION DE UN DISCO MAGNETICO. CARACTERIZADO PORQUE TIENE MEDIOS PARA TRASLADAR UNA PORCION DE LA SUPERFICIE DE GRABACION PASANDO POR UNA ESTACION DE TRABAJO; PORQUE DISPONE DE MEDIOS EN DICHA ESTACION DE TRABAJO PARA REMOVER LA MENCIONADA PORCION DE SUPERFICIE DE GRABACION MIENTRAS DEJA SUSTANCIALMENTE SIN EFECTUAR LAS PROPIEDADES DE GRABACION DEL RESTO DE DICHA SUPERFICIE DE GRABACION; Y PORQUE EL CITADO DISPOSITIVO DE ALMACENAMIENTO MAGNETICO ES UN DISCO QUE TIENE UNA BASE O SUSTRATO SOBRE LA CUAL ESTA SITUADA LA SUPERFICIE DE GRABACION.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US44376682A | 1982-11-22 | 1982-11-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
ES8601540A1 true ES8601540A1 (es) | 1985-10-16 |
ES535515A0 ES535515A0 (es) | 1985-10-16 |
Family
ID=23762110
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES526428A Expired ES8503158A1 (es) | 1982-11-22 | 1983-10-13 | Un metodo para permitir la autenticacion de un dispositivo de almacenamiento magnetico |
ES535518A Expired ES8601538A1 (es) | 1982-11-22 | 1984-08-30 | Un metodo para detectar una copia no autorizada de un dispositivo de almacenamiento magnetico de informacion |
ES535515A Granted ES535515A0 (es) | 1982-11-22 | 1984-08-30 | Un aparato para modificar la superficie de grabacion de un dispositivo de almacenamiento magnetico |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES526428A Expired ES8503158A1 (es) | 1982-11-22 | 1983-10-13 | Un metodo para permitir la autenticacion de un dispositivo de almacenamiento magnetico |
ES535518A Expired ES8601538A1 (es) | 1982-11-22 | 1984-08-30 | Un metodo para detectar una copia no autorizada de un dispositivo de almacenamiento magnetico de informacion |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0110511B1 (es) |
JP (1) | JPS5996577A (es) |
BR (1) | BR8305978A (es) |
CA (1) | CA1220547A (es) |
DE (1) | DE3375854D1 (es) |
ES (3) | ES8503158A1 (es) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL68989A (en) * | 1983-06-15 | 1985-03-31 | Amiran Grynberg | Diskette protection |
US4577289A (en) * | 1983-12-30 | 1986-03-18 | International Business Machines Corporation | Hardware key-on-disk system for copy-protecting magnetic storage media |
FR2567671B1 (fr) * | 1984-07-11 | 1986-12-26 | Logivision | Procede de stockage sur un disque de plusieurs series d'informations destinees a differents utilisateurs et disque realise par ce procede |
GB2162992B (en) * | 1984-08-09 | 1988-10-12 | Edward Peter Campbell Sington | A method of recording a computer program |
US4644493A (en) * | 1984-09-14 | 1987-02-17 | International Business Machines Corporation | Implementing a shared higher level of privilege on personal computers for copy protection of software |
GB2173327A (en) * | 1985-03-15 | 1986-10-08 | David Allan Phillips | Copy protecting computer programs |
DE3511712C2 (de) * | 1985-03-29 | 1995-09-07 | Polygram Gmbh | Plattenförmiger Informationsträger und Verfahren zu seiner Herstellung |
FR2640794A1 (fr) * | 1988-12-20 | 1990-06-22 | Dollar 2 | Procede de controle d'acces a une information ou a une zone controlee, clef d'acces pour la mise en oeuvre du procede et procede de fabrication de cette clef |
US5787068A (en) * | 1996-11-07 | 1998-07-28 | Imation Corp. | Method and arrangement for preventing unauthorized duplication of optical discs using barriers |
JP3783909B2 (ja) * | 1999-05-20 | 2006-06-07 | パイオニア株式会社 | カッティング装置、情報記録媒体、情報記録装置及び情報記録方法並びに、カッティング方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1529566A (en) * | 1974-10-16 | 1978-10-25 | Emi Ltd | Magnetic recording |
GB1525292A (en) * | 1976-04-30 | 1978-09-20 | Emi Ltd | Identification of records |
US4214280A (en) * | 1978-05-30 | 1980-07-22 | Xerox Corporation | Method and apparatus for recording data without recording on defective areas of a data recording medium |
DE3319343A1 (de) * | 1982-11-08 | 1984-05-10 | Vault Corp | Verfahren und vorrichtung zur unmoeglichmachung nichtgenehmigter kopien von aufgezeichneten daten |
-
1983
- 1983-09-26 EP EP19830305713 patent/EP0110511B1/en not_active Expired
- 1983-09-26 DE DE8383305713T patent/DE3375854D1/de not_active Expired
- 1983-10-13 JP JP19163983A patent/JPS5996577A/ja active Pending
- 1983-10-13 ES ES526428A patent/ES8503158A1/es not_active Expired
- 1983-10-14 CA CA000439033A patent/CA1220547A/en not_active Expired
- 1983-10-31 BR BR8305978A patent/BR8305978A/pt unknown
-
1984
- 1984-08-30 ES ES535518A patent/ES8601538A1/es not_active Expired
- 1984-08-30 ES ES535515A patent/ES535515A0/es active Granted
Also Published As
Publication number | Publication date |
---|---|
EP0110511A2 (en) | 1984-06-13 |
DE3375854D1 (en) | 1988-04-07 |
BR8305978A (pt) | 1984-07-10 |
ES526428A0 (es) | 1985-02-01 |
EP0110511A3 (en) | 1985-08-28 |
JPS5996577A (ja) | 1984-06-04 |
ES535515A0 (es) | 1985-10-16 |
ES535518A0 (es) | 1985-10-16 |
ES8601538A1 (es) | 1985-10-16 |
CA1220547A (en) | 1987-04-14 |
ES8503158A1 (es) | 1985-02-01 |
EP0110511B1 (en) | 1988-03-02 |
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