Patent ID: 7697609

Claim:
An apparatus comprising: an encoder which encodes information of a first moving picture in a second moving picture as a digital watermark, wherein the digital watermark generated is based on (1) a first motion vector derived from the first moving picture and (2) a disparity vector generated based on the first moving picture and the second moving picture, wherein the first and second moving pictures form a stereo moving picture with the first moving picture corresponding to one of a left or right picture and the second moving picture corresponding to the other one of the left or right picture, wherein the encoder encodes the digital watermark in the second moving picture through motion compensation, and wherein the digital watermark is embedded at a position of the second moving picture that corresponds to a predetermined band of a frequency domain representation of the second moving picture; and a decoder which extracts the digital watermark from the second moving picture-encoded data transmitted from the encoder, and decodes the second moving picture, and motion-compensated decodes the first moving picture based on the first motion vector and disparity vector included in the extracted digital watermark, wherein the predetermined band of the frequency domain representation of the second moving picture into which position the digital watermark is embedded is located between a first frequency band and a second frequency band of the frequency domain representation, and wherein the first and second frequency bands include information of the first moving picture encoded by the encoder into the second moving picture.