GB386676A - Improvements in or relating to secret telegraphic systems - Google Patents

Improvements in or relating to secret telegraphic systems

Info

Publication number
GB386676A
GB386676A GB20542/31A GB2054231A GB386676A GB 386676 A GB386676 A GB 386676A GB 20542/31 A GB20542/31 A GB 20542/31A GB 2054231 A GB2054231 A GB 2054231A GB 386676 A GB386676 A GB 386676A
Authority
GB
United Kingdom
Prior art keywords
contact
impulse
impulses
magnet
contacts
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
GB20542/31A
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.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens and Halske AG
Siemens Corp
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 and Halske AG, Siemens Corp filed Critical Siemens and Halske AG
Publication of GB386676A publication Critical patent/GB386676A/en
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
    • H04L9/38—Encryption being effected by mechanical apparatus, e.g. rotating cams, switches, keytape punchers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Lock And Its Accessories (AREA)
  • Knitting Machines (AREA)
  • Storage Device Security (AREA)
GB20542/31A 1930-07-18 1931-07-17 Improvements in or relating to secret telegraphic systems Expired GB386676A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE615016T 1930-07-18

Publications (1)

Publication Number Publication Date
GB386676A true GB386676A (en) 1933-01-17

Family

ID=34812891

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20542/31A Expired GB386676A (en) 1930-07-18 1931-07-17 Improvements in or relating to secret telegraphic systems

Country Status (5)

Country Link
US (1) US1912983A (enrdf_load_stackoverflow)
BE (1) BE381441A (enrdf_load_stackoverflow)
DE (2) DE615016C (enrdf_load_stackoverflow)
FR (1) FR721499A (enrdf_load_stackoverflow)
GB (1) GB386676A (enrdf_load_stackoverflow)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767392C (de) * 1938-05-21 1952-07-31 Lorenz A G C Verfahren zur Erzeugung und Aussendung von verschluesselten Nachrichten nach dem Start-Stop-System der Fernschreibtechnik
DE767367C (de) * 1939-05-11 1952-06-19 Lorenz A G C Verschluesselungseinrichtung zur zeitlichen Vertauschung von Fuenfer-Alphabet-Impulsen
DE744693C (de) * 1941-04-26 1944-01-22 Opta Radio Ag Zeichengebereinrichtung mit einer Mehrzahl umlaufender als Zeichentraeger bei der Signalgabe dienender Nockenscheiben, die unmittelbar einen gemeinschaftlichen Geberkontakt steuern
US2458406A (en) * 1945-09-28 1949-01-04 Ibm Ciphering and checking device
GB680900A (en) * 1949-10-05 1952-10-15 Dennis Harold Ward Improvements in hampers for carboys and other containers
US2765364A (en) * 1950-10-05 1956-10-02 Hagelin Boris Caesar Wilhelm Keying mechanism
US2797260A (en) * 1952-01-30 1957-06-25 Zenith Radio Corp Subscription television system
NL98390C (enrdf_load_stackoverflow) * 1952-08-19
US2789159A (en) * 1953-08-18 1957-04-16 Dreyse Richard Translating device for transmitting and receiving coded messages
US4187393A (en) * 1955-08-23 1980-02-05 Deweese Eugene R Jr Key generator

Also Published As

Publication number Publication date
FR721499A (fr) 1932-03-03
BE381441A (enrdf_load_stackoverflow)
US1912983A (en) 1933-06-06
DE666436C (de) 1938-10-21
DE615016C (de) 1935-06-24

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