Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2007-01-02
2007-01-02
Moise, Emmanuel L. (Department: 2137)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C380S202000
Reexamination Certificate
active
09815849
ABSTRACT:
An electronic watermark data insertion apparatus comprises an insertion information memory (39) for preliminarily storing insertion information for designating electronic watermark data to be inserted block by block and an electronic watermark data insertion unit (33) for inserting, on the basis of the insertion information, the designated electronic watermark data from an electronic watermark data table (37) in a quantized image block by block. An electronic watermark data detection apparatus comprises an electronic watermark date extracting unit (45) for extracting the image data having a biased frequency region projecting in dependency on the inserted electronic watermark data block by block and an electronic watermark data detection unit (50) for calculating a statistical similarity between the extracted data and the electronic watermark data stored in an electronic watermark data table (48). An electronic watermark data accumulator (51) accumulates the statistical similarity for a predetermined time interval to produce an accumulated addition result which is reset after the elapse of the predetermined time interval or when the accumulated addition result exceeds the a predetermined threshold value. A determining unit (52) determines that the electronic watermark data is detected when the accumulated addition result exceeds the predetermined threshold value.
REFERENCES:
patent: 5530759 (1996-06-01), Braudaway et al.
patent: 6154571 (2000-11-01), Cox et al.
patent: 6208745 (2001-03-01), Florencio et al.
patent: 6229924 (2001-05-01), Rhoads et al.
patent: 6275599 (2001-08-01), Adler et al.
patent: 6421445 (2002-07-01), Jensen et al.
patent: 6532541 (2003-03-01), Chang et al.
patent: 6560339 (2003-05-01), Iwamura
patent: 6674873 (2004-01-01), Donescu et al.
patent: 2335816 (1999-09-01), None
patent: 5-30466 (1993-02-01), None
patent: 6-315131 (1994-11-01), None
patent: 10-145757 (1998-05-01), None
patent: 10-191330 (1998-07-01), None
patent: 10-210435 (1998-08-01), None
patent: 10-513324 (1998-12-01), None
patent: 11-55639 (1999-02-01), None
patent: 11-153956 (1999-06-01), None
patent: 11-341452 (1999-12-01), None
patent: 2001-525152 (2001-12-01), None
patent: 2002-516538 (2002-06-01), None
patent: WO 99/45706 (1999-09-01), None
patent: WO 99/60791 (1999-11-01), None
patent: WO 99/60792 (1999-11-01), None
Nikkei Electronics, No. 660, Apr. 22, 1996, p. 13.
Tae-Yun Chung, et. al., “Digital Watermarking for Copyright Protection of MPEG2 Compressed Video”,IEEE Transactions on Consumer Electronics, IEEE, vol. 44, No. 3, pp. 895-901, (Aug. 1998).
A. Z. Tirkel, et al., “Secure Arrays for Digital Watermarking”, Pattern Recognition, 1998. Proceedings.Fourteenth International Conference on Brisbane, QLD., Australia Aug. 16-20, 1998, Los Alamitos, CA, USA, IEEE Comput. Soc, US, pp. 1643-1645, (Aug. 1998).
Jack Lacy, et. al., “On Combining Watermarking with Perceptual Coding”, Acoustics, Speech and Signal Processing, 1998. Proceedings of the1998 IEEE International Conference on Seattle, WA, USA May 12-15, 1998, New York, NY, USA, IEEE, US, pp. 3725-3728, (May 1998).
Mohan S. Kankanhalli, et. al., “Content Based Watermarking of Images”, Proceedings of theACM Multimedia '98, Bristol, UK, Sep. 12-16, 1998, ACM International Multimedia Conference, New York, NY: ACM, US, Conf. 6, pp. 61-70, (Sep. 1998).
Choong-Hoon Lee, et. al., “Adaptive Digital Image Watermarking Using Variable Size of Blocks in Frequency Domain”, Tencon 99. Proceedings of theIEEE Region 10 Conference Cheju Island, South Korea, Sep. 15-17, 1999, Piscataway, NJ, USA, IEEE, US, pp. 702-705, (Sep. 1999).
Frank Hartung, et. al., “Multimedia Watermarking Techniques”,Proceedings of the IEEE, IEEE. New York, US, vol. 87, No. 7, pp. 1079-1107, (Jul. 1999).
Hea Joung Kim, “Protecting Ownership Rights of a Lossless Image Coder Through Hierarchical Watermarking”, IEEE (1998), pp. 73-82.
Moise Emmanuel L.
NEC Corporation
Pyzocha Michael
Scully , Scott, Murphy & Presser, P.C.
LandOfFree
Electronic watermark data insertion apparatus and electronic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electronic watermark data insertion apparatus and electronic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic watermark data insertion apparatus and electronic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3782836