Cryptography – Communication system using cryptography – Frequency shift or inversion
Reexamination Certificate
2005-12-06
2005-12-06
Morse, Gregory (Department: 2134)
Cryptography
Communication system using cryptography
Frequency shift or inversion
C380S044000, C455S203000
Reexamination Certificate
active
06973188
ABSTRACT:
A method for scrambling/descrambling an analog signal includes receiving an analog signal and converting the signal into an intermediate frequency signal. A Gaussian pseudo-random noise signal is generated and then multiplied with the intermediate frequency signal to scramble/descramble the received analog signal.
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Heneghan Matthew
Lockheed Martin Corporation
McDermott Will & Emery LLP
Morse Gregory
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