Spread spectrum conferencing communication system
US4317204A · kind A · utility
14Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1976 |
| Grant date | Feb 23, 1982 |
| Priority date | — |
| Expiry date | Jun 4, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J13/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An anti-jam PN sequence spread spectrum conferencing communication system is disclosed for simultaneously transmitting and receiving in a plurality of communications channels secure voice communications. All received messages are modulated with the same pseudo noise sequence and arrive at any given channel at random time states, wherein the messages are separated, separately processed and finally conferenced, using a technique based upon the correlation of the PN sequence and dependent upon the randomness of the epoch state of a given PN sequence coded with a message in relation to the other coded messages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.