FR1442912A - Dispositif de codage d'une information ayant la forme d'impulsions - Google Patents

Dispositif de codage d'une information ayant la forme d'impulsions

Info

Publication number
FR1442912A
FR1442912A FR46286A FR69046286A FR1442912A FR 1442912 A FR1442912 A FR 1442912A FR 46286 A FR46286 A FR 46286A FR 69046286 A FR69046286 A FR 69046286A FR 1442912 A FR1442912 A FR 1442912A
Authority
FR
France
Prior art keywords
counter
stages
counters
pair
transmitting
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
FR46286A
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.)
Patentverwertungs & Elektro Ho
Original Assignee
Patentverwertungs & Elektro Ho
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 Patentverwertungs & Elektro Ho filed Critical Patentverwertungs & Elektro Ho
Application granted granted Critical
Publication of FR1442912A publication Critical patent/FR1442912A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
    • H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
    • H04L9/0662—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher with particular pseudorandom sequence generator
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/12—Transmitting and receiving encryption devices synchronised or initially set up in a particular manner

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Lock And Its Accessories (AREA)
  • Mobile Radio Communication Systems (AREA)
FR46286A 1964-08-06 1965-08-04 Dispositif de codage d'une information ayant la forme d'impulsions Expired FR1442912A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1030864A CH411030A (de) 1964-08-06 1964-08-06 Einrichtung zur Verschlüsselung einer impulsförmigen Nachricht

Publications (1)

Publication Number Publication Date
FR1442912A true FR1442912A (fr) 1966-06-17

Family

ID=4361792

Family Applications (1)

Application Number Title Priority Date Filing Date
FR46286A Expired FR1442912A (fr) 1964-08-06 1965-08-04 Dispositif de codage d'une information ayant la forme d'impulsions

Country Status (7)

Country Link
US (1) US3651261A (fr)
CH (1) CH411030A (fr)
DE (1) DE1205133B (fr)
FR (1) FR1442912A (fr)
GB (1) GB1093575A (fr)
NL (1) NL142302B (fr)
SE (1) SE316797B (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878332A (en) * 1972-10-20 1975-04-15 Barrie O Morgan Digital crytographic system and method
US3813493A (en) * 1972-12-07 1974-05-28 P Hughes Secure data transmission apparatus
DE2455477C3 (de) * 1974-11-23 1982-08-26 TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Verfahren zur Sprachverschleierung durch zeitliches Vertauschen der Sprachabschnitte
US4341925A (en) * 1978-04-28 1982-07-27 Nasa Random digital encryption secure communication system
EP0022069B1 (fr) * 1979-06-08 1983-09-21 GRETAG Aktiengesellschaft Dispositif pour la transmission chiffrée de messages
US4965825A (en) 1981-11-03 1990-10-23 The Personalized Mass Media Corporation Signal processing apparatus and methods
US7831204B1 (en) 1981-11-03 2010-11-09 Personalized Media Communications, Llc Signal processing apparatus and methods
USRE47642E1 (en) 1981-11-03 2019-10-08 Personalized Media Communications LLC Signal processing apparatus and methods
US4612658A (en) * 1984-02-29 1986-09-16 Tektronix, Inc. Programmable ripple counter having exclusive OR gates
FR2714495B1 (fr) * 1984-11-27 1996-01-26 Trt Telecom Radio Electr Système de télécommande pour guider sur une cible un mobile.
US4791669A (en) * 1985-11-30 1988-12-13 Nec Corporation Encryption/decryption system
US5805704A (en) * 1995-12-15 1998-09-08 United Microelectronics Corp. Method and apparatus for protecting broadcast software against unauthorized reception on a software broadcasting system
WO2007043002A2 (fr) * 2005-10-14 2007-04-19 Koninklijke Philips Electronics N.V. Systeme de securite ameliore

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696599A (en) * 1953-02-12 1954-12-07 Bell Telephone Labor Inc Check circuits
US3040192A (en) * 1958-07-30 1962-06-19 Ibm Logic, exclusive-or, and shift register circuits utilizing directly connected cascade transistors in "tree" configuration
CH361597A (de) * 1958-08-23 1962-04-30 Patelhold Patentverwertung Verfahren zur Verschleierung von Nachrichtensignalen
US3067280A (en) * 1959-09-15 1962-12-04 Teleprompter Corp Secret signaling
NL256822A (fr) * 1959-10-16
US3078344A (en) * 1960-10-25 1963-02-19 Robertshaw Fulton Controls Co Phase demodulation of keyed carrier by use of synchronous gating, with phase lock driven step wise in response to forbidden output
NL272974A (fr) * 1960-12-29
US3244808A (en) * 1962-01-12 1966-04-05 Massachusetts Inst Technology Pulse code modulation with few amplitude steps
US3307152A (en) * 1963-05-31 1967-02-28 Gen Electric Data transmission system with control character insertions
US3341659A (en) * 1964-01-24 1967-09-12 Burroughs Corp Controlled bandwidth coded voice communication system

Also Published As

Publication number Publication date
DE1205133B (de) 1965-11-18
SE316797B (fr) 1969-11-03
NL142302B (nl) 1974-05-15
GB1093575A (en) 1967-12-06
CH411030A (de) 1966-04-15
NL6412504A (fr) 1966-02-07
US3651261A (en) 1972-03-21

Similar Documents

Publication Publication Date Title
US3659046A (en) Message scrambler for pcm communication system
US4341925A (en) Random digital encryption secure communication system
FR1442912A (fr) Dispositif de codage d'une information ayant la forme d'impulsions
GB1506945A (en) Method of and apparatus for inserting or removing additional information in or from a television signal
GB1275446A (en) Data transmission apparatus
GB1147603A (en) Improvements in or relating to television transmission systems
GB1371500A (en) Time division multichannel on-off signal transmission system
US3731198A (en) Synchronization device for anti-jamming communications system
GB1265183A (fr)
US2527650A (en) Synchronization of pulse transmission systems
US4305152A (en) Security communication system
ES371100A1 (es) Un sistema de transferencia de informacion digital
GB1407892A (en) Frame synchronization system
US3742139A (en) Framing system for t-carrier telephony
GB1388035A (en) Method of and apparatus for encoded communications transmission
US3585596A (en) Digital signalling system
GB983255A (en) Improvements in or relating to pulse code modulation systems
GB1076063A (en) Improvements in or relating to time-division multiplex communications
US5004185A (en) Air-surface-missile data link system
US2645677A (en) Method and means for transmitting intelligence
GB1512926A (en) Method and apparatus for synchronizing a receiver-end cipher key generator with a transmitter-end cipher key generator
US2756274A (en) Pulse signalling systems
US5022079A (en) Lock means and TV sync for air-to-surface missile
SU1022332A1 (ru) Устройство синхронизации аппаратуры однокадровой передачи изображений
US3548104A (en) Method of synchronization in binary communication systems