SECURE COMMUNICATION KEYING SYSTEM
Assignee
Filed
Oct 28, 1981
Granted
Feb 20, 1996
Location
Abstract
The secure communication keying system has a noise generator whose output a predetermined finite band of noise within, for example, the zero to eleven hundred cycle per second range. The noise generator may be a pseudorandom noise generator that is synchronized with a given clock frequency. The output of the system may have noise-like characteristics, but it is encoded with any type of intelligence desired to be transmitted. The output signals simulate the ambient noise occurring within the communication medium and has the same frequency spectrum regardless of the frequency of the modulating signals supplied thereto.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Oct 28, 1981
Rescinded
Sep 7, 1994
Duration
12 years, 10 months
Inventor
- 1Unknown Unknown
Record Details
- Patent number
- US 5493612
- Application
- 04183696
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records
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