FR81802E - Systèmes de transmission de signaux électriques - Google Patents

Systèmes de transmission de signaux électriques

Info

Publication number
FR81802E
FR81802E FR51943A FR81802DA FR81802E FR 81802 E FR81802 E FR 81802E FR 51943 A FR51943 A FR 51943A FR 81802D A FR81802D A FR 81802DA FR 81802 E FR81802 E FR 81802E
Authority
FR
France
Prior art keywords
electrical signal
signal transmission
transmission systems
systems
electrical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR51943A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe dElectronique et dAutomatisme SA
Original Assignee
Societe dElectronique et dAutomatisme SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Societe dElectronique et dAutomatisme SA filed Critical Societe dElectronique et dAutomatisme SA
Application granted granted Critical
Publication of FR81802E publication Critical patent/FR81802E/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/58—Random or pseudo-random number generators
    • G06F7/582—Pseudo-random number generators
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C1/00—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
    • G09C1/06—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system wherein elements corresponding to the signs 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
    • G09C1/10—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system wherein elements corresponding to the signs 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 the connections being electrical

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
FR51943A 1951-04-05 1953-03-19 Systèmes de transmission de signaux électriques Expired FR81802E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR607641A FR1340801A (fr) 1951-04-05 1951-04-05 Systèmes de transmission de signaux électriques

Publications (1)

Publication Number Publication Date
FR81802E true FR81802E (fr) 1963-11-15

Family

ID=8694428

Family Applications (2)

Application Number Title Priority Date Filing Date
FR607641A Expired FR1340801A (fr) 1951-04-05 1951-04-05 Systèmes de transmission de signaux électriques
FR51943A Expired FR81802E (fr) 1951-04-05 1953-03-19 Systèmes de transmission de signaux électriques

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR607641A Expired FR1340801A (fr) 1951-04-05 1951-04-05 Systèmes de transmission de signaux électriques

Country Status (1)

Country Link
FR (2) FR1340801A (fr)

Also Published As

Publication number Publication date
FR1340801A (fr) 1963-10-25

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