Cryptography – Video cryptography – Copy protection or prevention
Reexamination Certificate
2008-09-16
2008-09-16
Heneghan, Matthew (Department: 2139)
Cryptography
Video cryptography
Copy protection or prevention
C726S030000
Reexamination Certificate
active
10809447
ABSTRACT:
An AV stream processing system includes an AV stream input unit which receives an AV stream having an AV content information field including first copy control information, and an AV content field including second copy control information, a determination unit which extracts the first and second copy control information from the received AV stream and determines whether the first copy control information has been modified, and an AV stream decryption unit which processes the received AV stream according to predetermined criteria, when the first copy control information has been modified.
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International Search Report.
The First Office Action for Application No. 200410068404.0 in the Patent Office of the People's Republic of China of Jan. 19, 2007.
Choi Yang-lim
Kim Yun-sang
Nam Su-hyun
Heneghan Matthew
Samsung Electronics Co,. Ltd.
Sughrue & Mion, PLLC
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