Secure communication system
US5805635A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1964 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Mar 17, 1984 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/70715
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A secure communication system comprising: PA1 a first cyclical pseudo-random noise generator comprising determinable vable starting point means and an output; PA1 transmitting means for transmitting said pseudo-random noise generator output; PA1 receiving means for receiving said transmitting means transmissions, said receiving means having an output; PA1 recycling storage means for storing said receiving means output; PA1 a second cyclical pseudo-random noise generator identical to said first pseudo-random noise generator having an output and a reset input, said receiving means output connected to said reset input; PA1 a correlator having a first input connected to said storage means and a second input connected to said second pseudo-random noise generator output and an output from said correlator; and PA1 timing means connected to said receiving means output and said correlator output for measuring time elapsed between any output of said receiver and said correlator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.