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
Synthesis of amines and intermediates for the synthesis thereof
Linear jet ionizer
Method for producing a sulfonated polyarylether block copolymer
Techniques for distributed storage aggregation
Method and system for detecting data modification within computing device
Dose escalation enzyme replacement therapy for treating acid sphingomyelinase deficiency
Call admission control method and system
  Randomly Featured Patents
Apparatus for making a lined tray
Nickel-metal hydride storage battery and production method thereof
Ink cartridge for ink jet recording device
Method and apparatus for signal analysis employing a virtual cross-correlation computer
Online card present transaction
Conductive compositions and processes therefor
In-line cold foil transfer process and apparatus
Handle-bar camera support and method therefor
Gem girdle
Layer structure having contact hole and method of producing same