Stream recording and/or reproducing apparatus and method

Details Stream recording and/or reproducing apparatus and method Stream recording and/or reproducing apparatus and method

2002-08-13

2010-11-30

Cervetti, David Garcia (Department: 2436)

Cryptography

Video cryptography

Copy protection or prevention

C380S205000, C380S210000

Reexamination Certificate

active

07844054

ABSTRACT:
An information recording and/or reproducing method for supervising the information, such as an input source, in a stream recorded on a recording medium. If, in a reproduction processing of reproducing an AV stream from the recording medium, the source_security_info, which is the copy control information recorded on the recording medium, is read out, the AV stream is read out, and analog video, for example, is output (step203), it is verified, from the information contained in the source_security_info, whether or not the input source is DTCP-concordant. If the input source is DTCP-concordant, reproduction restricting processing for a video output, conforming to the DTCP rule, is executed to issue the video output.

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