Prevention of CD-audio piracy using sub-code channels

Details Prevention of CD-audio piracy using sub-code channels Prevention of CD-audio piracy using sub-code channels

2006-01-17

2006-01-17

Revak, Christopher (Department: 2131)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

C705S057000, C369S053210, C369S275500, C713S193000

Reexamination Certificate

active

06988206

ABSTRACT:
A method for protecting data recorded on an original storage medium against unauthorized copying. The data are encoded in accordance with Standard 908 of the International Electrotechnical Commission. A portion of the encoded data is altered to introduce an error in a sub-code Q channel of the data, such that the altered data are inconsistent with Standard 908, but do not prevent playback of the data following recording thereof. The data, including the altered data, are recorded on the original storage medium, whereby an application which plays back the recorded data runs in a manner substantially unaffected by the alteration of the data, but a substantially unrecoverable error occurs in unauthorized copying of the original storage medium.

REFERENCES:
patent: 4995026 (1991-02-01), Makabe et al.
patent: 5337295 (1994-08-01), Maeda
patent: 5537387 (1996-07-01), Ando et al.
patent: 5648954 (1997-07-01), Satoh
patent: 5675694 (1997-10-01), Nakajima et al.
patent: 5699434 (1997-12-01), Hogan
patent: 5778257 (1998-07-01), Tsukatani et al.
patent: 5787068 (1998-07-01), Arps et al.
patent: 5872750 (1999-02-01), Satoh
patent: 5920540 (1999-07-01), Satoh
patent: 5930209 (1999-07-01), Spitzenberger et al.
patent: 5956408 (1999-09-01), Arnold
patent: 6005839 (1999-12-01), Sako et al.
patent: 6021101 (2000-02-01), Satoh
patent: 6038209 (2000-03-01), Satoh
patent: 6047292 (2000-04-01), Kelly et al.
patent: 6058091 (2000-05-01), Yokota et al.
patent: 6104679 (2000-08-01), Sollish
patent: 6253258 (2001-06-01), Cohen
patent: 0 843 471 (1998-05-01), None
patent: 1 061 514 (2000-12-01), None
patent: 0 899 733 (2001-03-01), None
patent: 2 205 667 (1998-12-01), None
patent: WO 98/08180 (1998-02-01), None
patent: WO 98/52194 (1998-11-01), None
patent: WO 98/54713 (1998-12-01), None
patent: WO 00/21085 (2000-04-01), None
patent: WO 00/68945 (2000-11-01), None
patent: WO 00/74053 (2000-12-01), None
patent: WO 01/61696 (2001-08-01), None
patent: WO 01/80546 (2001-10-01), None
Voelcker, et al., “How disks are ‘padlocked’” IEEE Spectrum, Jun. 1986, pp. 32-40.
Data interchange on read-only 120 mm optical data disk (CD-ROM), second edition, Standard ECMA, XX, XX, no. ECMA-130, Jun. 1996, 53 pages.
EP Search Report for EP 04 01 6923 dated Sep. 29, 2004, 2 pages.
EP Search Report for EP 04 01 6924 dated Sep. 28, 2004, 2 pages.
EP Search Report for EP 04 01 6925 dated Oct. 19, 2004, 2 pages.
EP Search Report for EP 04 01 6926 dated Sep. 30, 2004, 2 pages.

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