Informationsverarbeitungsgerät, Verfahren und Speichermedium dafür

摘要

The invention provides an apparatus and method for embedding digital watermark information into digital information or detecting embedded digital watermark information in a digital signal. Also in case the digital information has components of different kinds, the invention enables individual management of the digital watermark information and information indicating the embedding method therefor. In a configuration for attaining these objects, there are provided input means for inputting digital information in which digital watermark information is embedded, wherein said digital information is composed of signal components of plural kinds; and discrimination means for discriminating an embedding method of the digital watermark information into the signal component of a first kind, based on the signal component of a second kind contained in said digital information and different from said first kind and to the exclusion of the signal component or components of said first kind.