EP 1159742 A1 20011205 - 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
Application
Priority
- FR 9903103 W 19991210
- FR 9815833 A 19981215
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
IPC 8 full level
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 (source: EP US)
G11B 7/00736 (2013.01 - EP US); G11B 19/04 (2013.01 - EP US); G11B 19/12 (2013.01 - EP US); G11B 20/00086 (2013.01 - EP US); G11B 20/00586 (2013.01 - EP US); G11B 23/281 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
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
DOCDB simple family (application)
FR 9815833 A 19981215; AU 1569400 A 19991210; EP 99958304 A 19991210; FR 9903103 W 19991210; JP 2000588767 A 19991210; US 60088700 A 20000815