4. Cryptography
  5. Video cryptography
  6. Copy protection or prevention

Taizo Shirai

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Authentication and encryption utilizing command identifiers

Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Security kernel or utility
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Cryptographic processing apparatus and cryptographic...

Cryptography – Particular algorithmic function encoding
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Cryptographic processing apparatus, cryptographic processing...

Cryptography – Communication system using cryptography – Time segment interchange
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Data authentication system

Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
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Data authentication system

Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2318037

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