Digital watermarking system using scrambling method

Details Digital watermarking system using scrambling method Digital watermarking system using scrambling method

2003-02-05

2009-02-03

Moise, Emmanuel L (Department: 2137)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C382S100000, C380S252000, C380S205000, C373S130000

Reexamination Certificate

active

07487356

ABSTRACT:
An encoding apparatus that embeds a watermark in host data is provided. A multiplexer generates a plurality of bit sequences by adding initial data to the head of the watermark. A scrambler scrambles a plurality of the bit sequences respectively and generates a plurality of scrambled watermarks. An embedder embeds a plurality of the scrambled watermarks in the host data and generates a plurality of candidate watermarked host data. A signal-to-noise ratio calculator evaluates the robustness of the watermarks hidden in the respective candidate watermarked host data. A selector selects one candidate that has the highest level of the robustness as a final watermarked host data.

REFERENCES:
patent: 6061793 (2000-05-01), Tewfik et al.
patent: 6285774 (2001-09-01), Schumann et al.
patent: 6332030 (2001-12-01), Manjunath et al.
patent: 6345100 (2002-02-01), Levine
patent: 6359998 (2002-03-01), Cooklev
patent: 6535617 (2003-03-01), Hannigan et al.
patent: 6557103 (2003-04-01), Boncelet et al.
patent: 6665419 (2003-12-01), Oami
patent: 6674861 (2004-01-01), Xu et al.
patent: 6768807 (2004-07-01), Muratani
patent: 6853676 (2005-02-01), Kim
patent: 6934403 (2005-08-01), Joo et al.
patent: 6983051 (2006-01-01), Rhoads
patent: 6996248 (2006-02-01), Fudge et al.
patent: 2001/0044899 (2001-11-01), Levy
patent: 2003/0070075 (2003-04-01), Deguillaume et al.
patent: 2003/0161496 (2003-08-01), Hayashi et al.
patent: 11-164132 (1999-06-01), None
patent: 2000-13587 (2000-01-01), None
patent: 2000-165643 (2000-06-01), None
patent: 2000-295454 (2000-10-01), None
patent: 2001-125484 (2001-05-01), None
Japanese Office Action, with English translation, issued in Japanese Patent Application No. JP 2005-19447, mailed Dec. 4, 2007.
Foreign Office Action for Corresponding Japanese Patent Application No. 2002-036074 (w/English Translation) Reference No. NER1016033 Dispatch No. 331459 Dispatch Date: Sep. 6, 2005 Patent Application No. 2002-036074 Drafting Date: Sep. 1, 2005 Applicant: Sanyo Electric Co., Ltd. Respresentative/Applicant: Sakaki Morishita.

Affiliated with

Also associated with

Rating

Digital watermarking system using scrambling method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital watermarking system using scrambling method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital watermarking system using scrambling method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4101968