Scrambler key code synchronizer

Details Scrambler key code synchronizer Scrambler key code synchronizer

1981-06-29

1984-02-28

Cangialosi, Sal

Telegraphy

Systems

Printing

178 2214, 179 15S, H04K 100

Patent

active

044343230

ABSTRACT:
A method for synchronizing the scrambling sequences of communicating scrambler units of a privacy communications system in a reliable and secure manner. The method is particularly adapted for use in noisy or fade prone transmission environments, and permits late entry of authorized third parties to the system. The method utilizes digital sequences interleaved periodically with scrambled analog information to provide reliable synchronization.

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Shift Register Synthesis and BCH Decoding, Jan. 1969, James L. Massey, vol. IT-15, No. 1.

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