Global Patent Index - EP 1159742 A1

EP 1159742 A1 2001-12-05 - ANTIHACKING OPTICAL RECORDING DISC AND METHOD FOR READING SAME

Title (en)

ANTIHACKING OPTICAL RECORDING DISC AND METHOD FOR READING SAME

Title (de)

MIT KOPIERSCHUTZMITTLEN VERSEHENE OPTISCHE AUFZEICHNUNGSPLATTE SOWIE WIEDERGABEVERFAHREN

Title (fr)

DISQUE D'ENREGISTREMENT OPTIQUE ANTI-PIRATAGE ET PROCEDE DE LECTURE D'UN TEL DISQUE

Publication

EP 1159742 A1 (FR)

Application

EP 99958304 A

Priority

  • FR 9903103 W
  • FR 9815833 A

Abstract (en)

[origin: FR2787232A1] The invention concerns a recording disc comprising a main spiral track (1) and a section of secondary track (2) inserted between two successive turns of the main track. A use zone (3) comprises data (30) concerning the type of the antihacking disc and data (31) concerning the relative positioning of the section (2), which the disc player reaches by going to an address (A) of the main track and by skipping over the track (10). The section is then identified by identification data which it bears and then the disc physical structure is verified for its conformity with that described in the initialising zone. The invention is applicable to provide any optical disc, in particular CD or DVD with antihacking.

IPC 1-7 (main, further and additional classification)

G11B 20/00

IPC 8 full level (invention and additional information)

G11B 20/12 (2006.01); G11B 7/007 (2006.01); G11B 19/04 (2006.01); G11B 19/12 (2006.01); G11B 20/00 (2006.01); G11B 20/10 (2006.01); G11B 23/28 (2006.01)

CPC (invention and additional information)

G11B 7/00736 (2013.01); G11B 19/04 (2013.01); G11B 19/12 (2013.01); G11B 20/00086 (2013.01); G11B 20/00586 (2013.01); G11B 23/281 (2013.01)

Citation (search report)

See references of WO 0036601A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

FR 2787232 A1 20000616; FR 2787232 B1 20010223; AU 1569400 A 20000703; EP 1159742 A1 20011205; JP 2002532820 A 20021002; US 6452886 B1 20020917; WO 0036601 A1 20000622

INPADOC legal status


2005-11-02 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20050426

2003-02-12 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030102

2001-12-05 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010710

2001-12-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-12-05 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI