Verschlüsselungssystem zur Verhinderung illegaler Benutzung
摘要
A scramble system can effectively prevent a scrambled broadcast from being viewed illegally. In a scramble system in which a video signal scrambled by a scrambling apparatus (10) is descrambled by a decoding apparatus (20), an identification code that specifies the decoding apparatus (20) is inserted into a vertical blanking period of the video signal supplied to the decoding apparatus (20). <IMAGE>
申请公布号
DE69318366(D1)
申请公布日期
1998.06.10
申请号
DE1993618366
申请日期
1993.10.08
申请人
SONY CORP., TOKIO/TOKYO, JP
发明人
IHARA, KIICHI, C/O SONY CORPORATION, SHINAGAWA-KU, TOKYO, JP