Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Secure teleconferencing system










Image Number 4 for United States Patent #4845749.

A secure audio teleconferencing system is disclosed. The secure teleconferencing system comprises a centralized facility or bridge to which a plurality of participants is connected. The role of the bridge is to receive encrypted message signals from the participants and to add the encrypted message signals, modulo some known number. The result is then transmitted to the participants. Each participant is able to decrypt the modular sum of encrypted message signals, to obtain the desired ordinary sum of clear text message signals. In accordance with the invention, the message signals remain encrypted throughtout processing by the bridge. There are no non-encrypted messages.








 
 
  Recently Added Patents
Solution based precursors
Fluorescent molecule and method for detecting target nucleic acid
Indexing, relating and managing information about entities
Transparent zebrafish and preparation method thereof
Nucleic acid sequences encoding strictosidine synthase proteins
Train car for proppant containers
Drinking glass with ball embedded in base
  Randomly Featured Patents
Toy figure
Process for the O-alkylation of N-(hydroxy)aralkylphenylethanolamines
Preparation of furan compounds
Zeolite, process for producing the same, adsorbent comprising the zeolite, heat utilization system, adsorption heat pump, cold/heat storage system, and air-conditioning apparatus for humidity
Ceiling lamp
Mixing process and screw extruders for carrying out the same
Method and apparatus for controlling an automotive room lamp
X-ray imaging using pixelated gas detectors
Multi-function, self-service health kiosk
Methods for controlling macroinvertebrates in aqueous systems