Information recording method, recording device, record reproducing method and record media

Application Number: 00103004
Application Date: 2000.02.24
Publication Number: 1264900
Publication Date: 2000.08.30
Priority Information: 1999/2/26 JP 051732/1999; 1999/4/8 JP 101178/1999
International: G11B15/05;G11B20/12;H04N5/91
Applicant(s) Name: Victor Co. of Japan, Ltd.
Inventor(s) Name: Higurashi Seishi;Kaibara Takayuki
Patent Agency Code: 11219
Patent Agent: xie lina
Abstract The invention provides a recording media player and a recording media recorder provided with a high-security copy protection system of less complexity. A recording media player and/or recorder provided with a copy protection system stubborn to attacks and highly flexible in dealing with recording media of various copy conditions. For this purpose, various distributed copyright protection information (DCPI) values are used. The DCPI values include water marks in case of an MPEG stream, Copy Generation Management System (CGMS) codes, EMI (encryption mode indicator) in case of an IEEE1394-1995 interface, and user defined DCPI values. The recording is achieved such that DCPI values are recorded in user-unrewritable (or user-inaccessible) areas of the recording medium as long as possible.