Patent Document ID: 7996678
Application ID: 10480339
Patent Status: 1

Claim One:
1. A method of embedding a watermark in a motion image signal, the motion image signal comprising a sequence of images, the method comprising: representing said watermark by a sequence of watermark samples, each watermark sample having a value and each watermark sample forming a portion of the watermark, such that each watermark sample from the sequence of watermark samples corresponds to an image of the sequence of images; embedding said corresponding watermark sample in said image for each image of said sequence of images, the embedding comprising: adding the watermark sample value to the luminance value of the pixels constituting said image such that the mean luminance value of the image is modified in accordance with the value of the watermark sample; and for each of the sequence of watermark samples, repeating the adding of the watermark sample value to the luminance value of pixels of an image such that each watermark sample modifies the mean luminance value of a different image of the sequence of images until the entire watermark is embedded.