(19)
(11) EP 1 362 347 A1

(12)

(43) Date of publication:
19.11.2003 Bulletin 2003/47

(21) Application number: 02714791.7

(22) Date of filing: 25.01.2002
(51) International Patent Classification (IPC)7G11B 5/09, G11B 3/90
(86) International application number:
PCT/US0202/315
(87) International publication number:
WO 0205/9881 (01.08.2002 Gazette 2002/31)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 25.01.2001 US 264372 P

(71) Applicant: Hide & Seek Technologies, Inc.
Jenks, OK 74037 (US)

(72) Inventors:
  • SCHNECK, Karl
    Milford, PA 18337 (US)
  • WELDON, James, J.
    Superior, CO 80027 (US)
  • SMITH, Jerry, R.
    Litleton, CO 80120 (US)

(74) Representative: Petruzziello, Aldo et al
Racheli & C. s.r.l.Viale San Michele del Carso, 4
20144 Milano
20144 Milano (IT)

   


(54) METHOD AND SYSTEM FOR AUTHENTICATING AN OPTICAL DISC USING PURPOSEFULLY PROVIDED DATA ERRORS