Resources Contact Us Home
Electronic device providing automatic permutations of a Vigenere Square

Image Number 8 for United States Patent #4675477.

This invention relates to cryptographic teletypewriter systems and more picularly to an electronic device for use in such systems which automatically provides permutations of a Vigenere Square.

  Recently Added Patents
System and method for passing PLC signals from a first electrical line to a second electrical line
System for collecting computer application usage data of targeted application programs executed on a plurality of client devices
Implicit certificate scheme
Spark plug
Method and system for shared high speed cache in SAS switches
Estimating travel time
Biaxially oriented film which could be thermally laminated with paper and other substrates
  Randomly Featured Patents
Camera having an exposure mode change-over device
Method for manufacturing a projectile containing chemiluminescent compounds
Article for applying artificial tanning agent and method of making
Controlling vessel growth and directionality in mammals and implantable material
Method for polymerization of olefins
Sub-mount type device for emitting light
Hood for a convertible
Enclosures for electrical switchgear
Automatic servo-mechanism for sequential gearbox and clutch
Enhanced automatic red eye removal