发明名称 |
Method and apparatus for maintaining secure and nonsecure data in a shared memory system |
摘要 |
A graphics processor receives a compressed encrypted video stream. The graphics processor decrypts the compressed encrypted video stream and stores a decrypted version (i.e., a decrypted compressed video stream) in a protected portion of an on-chip or off-chip video memory. The graphics processor then permits processors and other bus masters on the graphics processor to access the on-chip video memory, but conditionally limits access to other bus masters that are located off-chip, such as a central processing unit located off-chip and coupled to the graphics processor via a bus.
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申请公布号 |
US2006123248(A1) |
申请公布日期 |
2006.06.08 |
申请号 |
US20050300542 |
申请日期 |
2005.12.14 |
申请人 |
PORTER ALLEN J;WANG CHUN;KECHICHIAN KEVORK;VARGA GABRIEL;STRASSER DAVID |
发明人 |
PORTER ALLEN J.;WANG CHUN;KECHICHIAN KEVORK;VARGA GABRIEL;STRASSER DAVID |
分类号 |
H04N7/16;G06F1/26;G06F7/04;G06F11/00;G06F11/30;G06F12/14;G06F17/30;G06K9/00;G08B13/00;G08B21/00;G08B29/00;G09G5/36;G09G5/39;H03M1/68;H04K1/00;H04L9/00;H04L9/32;H04N5/44 |
主分类号 |
H04N7/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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