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Digital receiver and method for receiving secure group data

Cryptography – Communication system using cryptography – Wireless communication
Reexamination Certificate

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Digital video recorder employing a unique ID to interlock...

Cryptography – Communication system using cryptography – Pseudo-random sequence scrambling
Reexamination Certificate

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Digital voice-band spectrum inversion apparatus

Cryptography – Communication system using cryptography – Frequency shift or inversion
Patent

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Disguised transmission system and method

Cryptography – Communication system using cryptography – Wireless communication
Patent

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Disk drive with flexible data stream encryption

Cryptography – Communication system using cryptography – Data stream/substitution enciphering
Reexamination Certificate

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Dual processor framer

Cryptography – Communication system using cryptography – Wireless communication
Reexamination Certificate

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Duplex analog scrambler

Cryptography – Communication system using cryptography – Frequency shift or inversion
Patent

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DVD data descrambler for host interface and MPEG interface

Cryptography – Communication system using cryptography – Data stream/substitution enciphering
Patent

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Dynamic key generation and confidential synchronization of...

Cryptography – Communication system using cryptography – Symmetric key cryptography
Reexamination Certificate

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Dynamic system bus encryption using improved differential...

Cryptography – Communication system using cryptography – Symmetric key cryptography
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Dynamically adjustable software encryption

Cryptography – Communication system using cryptography – Position dependent or authenticating
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