4. Cryptography
  5. Cryptanalysis

Macrovision Corp

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Enhancing concealment in the presence of fine mistuning for...

Cryptography – Video cryptography – Video electric signal modification
Reexamination Certificate

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Method and apparatus for digitally removing or defeating effects

Cryptography – Cryptanalysis
Patent

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Method and apparatus for improving the effects of color...

Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate

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Method and apparatus for modifying the effects of color...

Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate

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Method and apparatus for modifying the envelope of a RF carrier

Cryptography – Video cryptography – Copy protection or prevention
Patent

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Profile ID: LFUS-PAI-P-1516129

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