Patent ID: 6853737
Filing Date: 2005-02-08
Classification: G06T

Abstract:
1. An electronic watermark embedding device including an electronic watermark pattern embedding unit that embeds an electronic watermark pattern in input image or video data, said electronic watermark embedding device further comprising: displacement information pattern embedding means for embedding a displacement information pattern, which is produced in advance, in an image or video having the electronic watermark pattern embedded therein, and transmitting the resultant image or video; said displacement information pattern embedding means including a displacement information pattern storage unit in which displacement information patterns are stored, and a displacement information pattern embedding unit for embedding the displacement information pattern, which is stored in the displacement information pattern storage unit, in the image or video having the electronic watermark pattern embedded therein, wherein the displacement information pattern has a plurality of displacement information items arranged with a predetermined distance between adjoining displacement information items, and the displacement information items resist enlargement or reduction.