Apparatus and method of secured analog voice communication
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United States of America Patent
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-
May 8, 2001
Grant Date -
N/A
app pub date -
Oct 30, 1997
filing date -
Oct 30, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus and method for improved security in wire or wireless communication systems includes scrambling the audio signal, combining a masking signal with the scrambled audio signal, and then transmitting the scrambled masked signal. To recover the original audio, a receiver must by synchronized and know the characteristics of the masking signal and the scrambling technique. Such a receiver removes the masking signal, descrambles the audio and thus recovers the original audio. Any attempted interception of the communication would hear white noise, and even if the white noise mask where removed, the communication would still have the security level of the scrambling. The mask removes any remnants of the original audio that might be used to try to locate and intercept the communication.
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