Privacy communication method and system
US4244053A · kind A · utility
8Cited by
12References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1970 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | Sep 10, 1990 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04K1/003
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A privacy communication method and system which utilizes coherent, continuously changing frequencies for keyed, pulsed, and voice communications. A synthesized swept frequency or "chirp" signal imparts a privacy or secure communications capability to the communications signal by virtue of the random or pseudo-random nature of the transmitted signals which is programmed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.