Secure communication system
US4893339A · kind A · utility
67Cited by
45References
53Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1986 |
| Grant date | Jan 9, 1990 |
| Priority date | — |
| Expiry date | Sep 30, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/34
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed is a synchronous secure communication system wherein an information signal is encrypted in an encryption means. The encrypted signal is compressed to allow the insertion of a synchronization signal, and the combined signals are transmitted. At the receiver, the synchronization signal is extracted and used to synchronize the receiver to the incoming data stream thereby improving receiver sensitivity and range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.