FR1515368A - Installation of teleprinter, especially for half-duplex operation with encrypted characters - Google Patents

Installation of teleprinter, especially for half-duplex operation with encrypted characters

Info

Publication number
FR1515368A
FR1515368A FR98072A FR98072A FR1515368A FR 1515368 A FR1515368 A FR 1515368A FR 98072 A FR98072 A FR 98072A FR 98072 A FR98072 A FR 98072A FR 1515368 A FR1515368 A FR 1515368A
Authority
FR
France
Prior art keywords
unit
gate
mvs
reset
teleprinter
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
FR98072A
Other languages
French (fr)
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Application granted granted Critical
Publication of FR1515368A publication Critical patent/FR1515368A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C3/00—Typewriters for ciphering or deciphering cryptographic text
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/12—Details relating to cryptographic hardware or logic circuitry
    • H04L2209/125—Parallelization or pipelining, e.g. for accelerating processing of cryptographic operations

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Bidirectional Digital Transmission (AREA)

Abstract

1,170,655. Telegraphy. SIEMENS A.G. 10 March, 1967 [11 March, 1966], No. 11352/67. Heading H4P. In a teleprinter system comprising two subscribers in half-duplex connection, each subscriber has a unit as shown in which the transmission side is blocked during reception and vice versa. Serial data from the transmitter sk passes via gate SGO to unit EO where it is converted to parallel form. The data may be ciphered at VI, and is serialized at SL from which it passes to line. When a signal is to be transmitted, bi-stable SS is set. This sets unit MVS which indicates the present operating state. When unit EO has cycled once, SS is reset and unit SL is started. When SL has cycled once a pulse passes via delay S and gate GS, now enabled since SS is reset, to reset MVS. When set, unit MVS inhibits receiving gate SGL so that no signals can be received from the line for about one character time longer than the duration of the input from sk. A similar circuit on the receiving side, feeding teleprinter EM, blocks the transmission side during reception. In the case of synchronous working gate SGS is inhibited when the transmitter sk is providing filler signals. When signals are to be ciphered or deciphered by units VI, VII, unit MVH causes gates SGO and SGL to be blocked during the transmission of a " start of enciphering " signal.
FR98072A 1966-03-11 1967-03-09 Installation of teleprinter, especially for half-duplex operation with encrypted characters Expired FR1515368A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0102478 1966-03-11

Publications (1)

Publication Number Publication Date
FR1515368A true FR1515368A (en) 1968-03-01

Family

ID=7524468

Family Applications (1)

Application Number Title Priority Date Filing Date
FR98072A Expired FR1515368A (en) 1966-03-11 1967-03-09 Installation of teleprinter, especially for half-duplex operation with encrypted characters

Country Status (5)

Country Link
BE (1) BE695309A (en)
DE (1) DE1462983B2 (en)
FR (1) FR1515368A (en)
GB (1) GB1170655A (en)
NL (1) NL6703102A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2435174A1 (en) * 1975-02-24 1980-03-28 Siemens Ag ASSEMBLY FOR THE CONTROL OF HALF-DUPLEX DATA TRANSMISSION FACILITIES
FR2436537A1 (en) * 1975-02-24 1980-04-11 Siemens Ag ASSEMBLY FOR CONTROLLING THE OPERATION WITH CODING IN INSTALLATIONS WITH CONTROLLED PROCEDURE FOR HALF-DUPLEX DATA TRANSMISSION

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2929252C2 (en) * 1979-07-19 1984-09-20 Siemens AG, 1000 Berlin und 8000 München Method for encrypted data transmission in half-duplex operation between data terminals of two data stations
DE4014855C1 (en) * 1990-05-09 1991-11-14 Siemens Ag, 8000 Muenchen, De

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2435174A1 (en) * 1975-02-24 1980-03-28 Siemens Ag ASSEMBLY FOR THE CONTROL OF HALF-DUPLEX DATA TRANSMISSION FACILITIES
FR2436537A1 (en) * 1975-02-24 1980-04-11 Siemens Ag ASSEMBLY FOR CONTROLLING THE OPERATION WITH CODING IN INSTALLATIONS WITH CONTROLLED PROCEDURE FOR HALF-DUPLEX DATA TRANSMISSION

Also Published As

Publication number Publication date
DE1462983A1 (en) 1968-12-12
GB1170655A (en) 1969-11-12
NL6703102A (en) 1967-09-12
DE1462983B2 (en) 1971-02-18
BE695309A (en) 1967-09-11

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