FR703450A - Method and apparatus for maintaining the secrecy of radiotelegraph communications - Google Patents

Method and apparatus for maintaining the secrecy of radiotelegraph communications

Info

Publication number
FR703450A
FR703450A FR703450DA FR703450A FR 703450 A FR703450 A FR 703450A FR 703450D A FR703450D A FR 703450DA FR 703450 A FR703450 A FR 703450A
Authority
FR
France
Prior art keywords
radiotelegraph
secrecy
communications
maintaining
radiotelegraph communications
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
Other languages
French (fr)
Inventor
Willem Broertjes
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 filed Critical
Application granted granted Critical
Publication of FR703450A publication Critical patent/FR703450A/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
    • H04L9/34—Bits, or blocks of bits, of the telegraphic message being interchanged in time
    • 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
    • H04L2209/80—Wireless

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Selective Calling Equipment (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)
  • Burglar Alarm Systems (AREA)
  • Lock And Its Accessories (AREA)
FR703450D 1929-10-12 1930-10-07 Method and apparatus for maintaining the secrecy of radiotelegraph communications Expired FR703450A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB146177D DE571907C (en) 1929-10-12 1929-10-12 Method and device for achieving secrecy in the wireless transmission of telegraphic reports

Publications (1)

Publication Number Publication Date
FR703450A true FR703450A (en) 1931-04-30

Family

ID=7001181

Family Applications (1)

Application Number Title Priority Date Filing Date
FR703450D Expired FR703450A (en) 1929-10-12 1930-10-07 Method and apparatus for maintaining the secrecy of radiotelegraph communications

Country Status (6)

Country Link
US (1) US1869659A (en)
BE (1) BE373894A (en)
DE (1) DE571907C (en)
FR (1) FR703450A (en)
GB (1) GB341568A (en)
NL (1) NL32443C (en)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433407A (en) * 1940-04-04 1947-12-30 Int Standard Electric Corp System of modulation transmission by means of impulses
US2836657A (en) * 1944-11-20 1958-05-27 Gen Electric Secrecy communication system
GB2283882B (en) * 1984-11-23 1995-09-06 Marconi Co Ltd Communication system
US4802220A (en) * 1985-03-20 1989-01-31 American Telephone And Telegraph Company, At&T Bell Laboratories Method and apparatus for multi-channel communication security
US7511621B1 (en) 1995-08-31 2009-03-31 Intermec Ip Corp. High-performance mobile power antennas
US7652632B2 (en) 2004-08-18 2010-01-26 Ruckus Wireless, Inc. Multiband omnidirectional planar antenna apparatus with selectable elements
US7696946B2 (en) 2004-08-18 2010-04-13 Ruckus Wireless, Inc. Reducing stray capacitance in antenna element switching
US7193562B2 (en) 2004-11-22 2007-03-20 Ruckus Wireless, Inc. Circuit board having a peripheral antenna apparatus with selectable antenna elements
US8031129B2 (en) 2004-08-18 2011-10-04 Ruckus Wireless, Inc. Dual band dual polarization antenna array
US7292198B2 (en) 2004-08-18 2007-11-06 Ruckus Wireless, Inc. System and method for an omnidirectional planar antenna apparatus with selectable elements
US7498996B2 (en) 2004-08-18 2009-03-03 Ruckus Wireless, Inc. Antennas with polarization diversity
US7965252B2 (en) 2004-08-18 2011-06-21 Ruckus Wireless, Inc. Dual polarization antenna array with increased wireless coverage
US7880683B2 (en) 2004-08-18 2011-02-01 Ruckus Wireless, Inc. Antennas with polarization diversity
US7362280B2 (en) 2004-08-18 2008-04-22 Ruckus Wireless, Inc. System and method for a minimized antenna apparatus with selectable elements
CN1934750B (en) 2004-11-22 2012-07-18 鲁库斯无线公司 Circuit board having a peripheral antenna apparatus with selectable antenna elements
US7358912B1 (en) 2005-06-24 2008-04-15 Ruckus Wireless, Inc. Coverage antenna apparatus with selectable horizontal and vertical polarization elements
US7646343B2 (en) 2005-06-24 2010-01-12 Ruckus Wireless, Inc. Multiple-input multiple-output wireless antennas
US7893882B2 (en) 2007-01-08 2011-02-22 Ruckus Wireless, Inc. Pattern shaping of RF emission patterns
US20060214845A1 (en) * 2005-03-23 2006-09-28 Magnus Jendbro Global positioning system (GPS) accessories, hosts and methods that use radio frequency transmission of raw GPS data
US7639106B2 (en) 2006-04-28 2009-12-29 Ruckus Wireless, Inc. PIN diode network for multiband RF coupling
US8217843B2 (en) 2009-03-13 2012-07-10 Ruckus Wireless, Inc. Adjustment of radiation patterns utilizing a position sensor
US8698675B2 (en) 2009-05-12 2014-04-15 Ruckus Wireless, Inc. Mountable antenna elements for dual band antenna
US9407012B2 (en) 2010-09-21 2016-08-02 Ruckus Wireless, Inc. Antenna with dual polarization and mountable antenna elements
US8842630B2 (en) 2010-12-17 2014-09-23 Cisco Technology, Inc. Extendable frequency hopping timeslots in wireless networks
US8756668B2 (en) 2012-02-09 2014-06-17 Ruckus Wireless, Inc. Dynamic PSK for hotspots
US10186750B2 (en) 2012-02-14 2019-01-22 Arris Enterprises Llc Radio frequency antenna array with spacing element
US9634403B2 (en) 2012-02-14 2017-04-25 Ruckus Wireless, Inc. Radio frequency emission pattern shaping
US9092610B2 (en) 2012-04-04 2015-07-28 Ruckus Wireless, Inc. Key assignment for a brand
US9570799B2 (en) 2012-09-07 2017-02-14 Ruckus Wireless, Inc. Multiband monopole antenna apparatus with ground plane aperture
US10230161B2 (en) 2013-03-15 2019-03-12 Arris Enterprises Llc Low-band reflector for dual band directional antenna

Also Published As

Publication number Publication date
DE571907C (en) 1933-03-07
BE373894A (en)
NL32443C (en)
US1869659A (en) 1932-08-02
GB341568A (en) 1931-01-22

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