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1. (WO1998052114) ARRANGEMENT FOR PREVENTING USE OF UNAUTHORIZED DUPLICATES OF A DATA STORAGE MEDIUM USING SUBCODE AND METHOD THEREFOR
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/052114 International Application No.: PCT/US1998/008422
Publication Date: 19.11.1998 International Filing Date: 06.05.1998
IPC:
G11B 20/00 (2006.01)
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20
Signal processing not specific to the method of recording or reproducing; Circuits therefor
Applicants:
IMATION CORP. [US/US]; 1 Imation Place P.O. Box 64898 Saint Paul, MN 55164-0898, US
Inventors:
BLIXT, Jon, J.; US
Agent:
LEVINSON, Eric, D. ; Imation Legal Affairs P.O. Box 64898 Saint Paul, MN 55164-0898, US
Priority Data:
08/857,23516.05.1997US
Title (EN) ARRANGEMENT FOR PREVENTING USE OF UNAUTHORIZED DUPLICATES OF A DATA STORAGE MEDIUM USING SUBCODE AND METHOD THEREFOR
(FR) PROCEDE ET DISPOSITIF DE PREVENTION CONTRE L'UTILISATION DE REPRODUCTIONS ILLICITES D'UN SUPPORT DE DONNEES AU MOYEN D'UN SOUS-CODE
Abstract:
(EN) A copy-protection method includes modifying portions of the subcode (216) on a disc (100). The modified subcode is normally disregarded when reading the disc and is not copied during typical copying operations. When a user wishes to execute a program stored on the disc using a computer, the computer determines (502) whether the subcode is modified. If the subcode contains certain data, the user is permitted (504) to execute the program. Otherwise, the user is prevented (506) from executing the program.
(FR) L'invention porte sur un procédé de protection de copies consistant à modifier des parties du sous-code (216) d'un disque (100). Normalement, on ne tient pas compte du sous-code modifié lors de la lecture du disque, et celui-ci n'est pas copié lors des opérations de reproduction habituelles. Lorsqu'un utilisateur souhaite exécuter un programme enregistré sur le disque au moyen d'un ordinateur, cet ordinateur détermine (502) si le sous-code est modifié. Si le sous-code contient certaines données, l'autorisateur est autorisé (504) à exécuter le programme. Dans le cas contraire, il lui est interdit (506) d'exécuter le programme.
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Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
AU1998073621