It is an object of this invention to efficiently embed digital watermark information in the above image or audio data. In order to achieve this object, there is provided a data processing apparatus comprising input means for inputting digital data including at least one of image data and audio data,...http://www.google.ca/patents/US6434253?utm_source=gb-gplus-sharePatent US6434253 - Data processing apparatus and method and storage medium
Data processing apparatus and method and storage medium
