Electronic watermark insertion device, detection device, and...

Image analysis – Applications

Reexamination Certificate

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Details

C382S248000, C382S250000, C713S176000

Reexamination Certificate

active

07149324

ABSTRACT:
The use of the undefined low-order four bits of an 8-bit watermark is defined and, when contents are reproduced, a predetermined operation is performed according to the information stored in the low-order four bits. That is, a watermark is added to an original image to create an image with the watermark inserted. When the contents are reproduced, the watermark is detected in the image and, based on the information stored in the low-order four bits of the detected watermark, a predetermined operation, for example, access to a web site on the Internet, is performed.

REFERENCES:
patent: 6192138 (2001-02-01), Yamadaji
patent: 6285775 (2001-09-01), Wu et al.
patent: 6310962 (2001-10-01), Chung et al.
patent: 6374036 (2002-04-01), Ryan et al.
patent: 6427020 (2002-07-01), Rhoads
patent: 6453053 (2002-09-01), Wakasu
patent: 6643382 (2003-11-01), Maeda
patent: 6668068 (2003-12-01), Hashimoto
patent: 6707465 (2004-03-01), Yamazaki et al.
patent: 6798893 (2004-09-01), Tanaka
patent: 10-155151 (1998-06-01), None
patent: 11-313292 (1999-11-01), None
patent: WO 00/11599 (2000-03-01), None
Wu, et al., “Image Refining Technique Using Digital Watermarking,” Oct. 6, 1999, IEEE, pp. 1-5.

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