Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Protection at a particular protocol layer
Reexamination Certificate
2006-04-25
2006-04-25
Peeso, Thomas R. (Department: 2132)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Protection at a particular protocol layer
C713S152000
Reexamination Certificate
active
07036024
ABSTRACT:
Embedding fingerprinting or watermarking information includes delivering information in-band within digital content representing a media stream, so unauthorized distributors must choose between degrading the media stream, or leaving sufficient information detectable that unauthorized distribution can be detected. For fingerprinting, the method provides a relatively high degree of confidence of both detecting at least one colluding unauthorized distributor, and not falsely accusing any innocent party of being an unauthorized distributor. Embedding fingerprinting or watermarking information includes selecting a sequence of locations within digital content, and embedding information in the form of a sequence of one or more bits at each of those locations, thus representing a set of marking symbols. Marking symbols cannot be readily manufactured without at least one colluding unauthorized distributor having received it, so any distributed digital content includes at least some marking symbols traceable to at least one colluding unauthorized distributor.
REFERENCES:
patent: WO 2004/070585 (2004-08-01), None
Combining digital watermarks and collusion secure fingerprints for customer copy monitoring; Dittmann, J.; Secure Images and Image Authentication (Ref. No. 2000/039), IEE Seminar on, Vol., Iss., 2000; pp.: 6/1-6/6.
Boneh, Dan et al. “Collusion-Secure Fingerprinting for Digital Data.” IEEE Transactions on Information Theory, 1998, pp. 1897-1905, vol. 44, No. 5.
Kaleidescape, Inc.
Peeso Thomas R.
Swernofsky Law Group PC
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