公开(公告)号：AU6005899A

公开(公告)日：2000-04-26

申请号：AU6005899

申请日：1999-10-08

Applicant: PANASONIC IP CORP AMERICA

Inventor： YAMAMOTO MASAYA ,  NONOMURA TOMOYUKI ,  MINAMI MASATAKA ,  KOZUKA MASAYUKI

IPC: G11B20/00 ,  G11B20/12 ,  G11B20/10 ,  H04N1/387 ,  G09C5/00

Abstract: A data processor, comprises an acquiring unit (11) for receiving a network signal Sn from a network (N) and acquiring delivered audio data Dau in which information such as copyright information is embedded, and a control unit (115) for acquiring information representing the electronic watermark method used when the information such as copyright information is embedded. The embedded information is extracted by using an appropriate electronic watermark method according to the acquired electronic watermark information, and thereby the delivered audio data Dau in which the embedded information is embedded by using a predetermined electronic watermark method is recorded on a recording medium. As a result, delivered audio data Dau which is suplied through a network (N) and in which information is embedded even by using any electronic watermark method can be properly reproduced according to the embedded information such as copywright information by a reproducing device, which is a household appliance.