TREA

Apparatus or methods whereby a given sequence of signs

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Industry

  • CPC
  • G09C1/00
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Parent Industries

GPHYSICS G09Cryptography, education, displays G09CCODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY

Current Industry

G09C1/00Apparatus or methods whereby a given sequence of signs

Sub Industries

G09C1/02by using a ciphering code in chart form G09C1/04with sign carriers or indicators moved relative to one another to positions determined by a permutation code, or key, so as to indicate the appropriate corresponding clear or ciphered text G09C1/06wherein elements corresponding to the sign making up the clear text are operatively connected with elements corresponding to the signs making up the ciphered text, the connections, during operation of the apparatus, being automatically and continuously permuted by a coding or key member G09C1/08the connections being mechanical G09C1/10the connections being electrical G09C1/12comprising contact-bearing permutation discs G09C1/14involving removable or interchangeable coding numbers
Industries