BE479062A - - Google Patents

Info

Publication number
BE479062A
BE479062A BE479062DA BE479062A BE 479062 A BE479062 A BE 479062A BE 479062D A BE479062D A BE 479062DA BE 479062 A BE479062 A BE 479062A
Authority
BE
Belgium
Application number
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.)
Publication of BE479062A publication Critical patent/BE479062A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/02—Secret communication by adding a second signal to make the desired signal unintelligible
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/006—Secret communication by varying or inverting the phase, at periodic or random intervals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
BE479062D 1944-04-20 BE479062A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US531859A US2426225A (en) 1944-04-20 1944-04-20 Communication system

Publications (1)

Publication Number Publication Date
BE479062A true BE479062A (fr)

Family

ID=24119350

Family Applications (1)

Application Number Title Priority Date Filing Date
BE479062D BE479062A (fr) 1944-04-20

Country Status (5)

Country Link
US (1) US2426225A (fr)
BE (1) BE479062A (fr)
FR (1) FR951383A (fr)
GB (1) GB591884A (fr)
NL (1) NL81626C (fr)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384705A (en) * 1944-08-29 1968-05-21 Rosen Leo Facsimile privacy apparatus
US2509064A (en) * 1945-08-23 1950-05-23 Bell Telephone Labor Inc Reduction of noise in pulse position modulation systems
US2629857A (en) * 1946-08-10 1953-02-24 Int Standard Electric Corp Communication system utilizing constant amplitude pulses of opposite polarities
US2605410A (en) * 1946-08-27 1952-07-29 Rca Corp Pulse-time discriminator
US2548796A (en) * 1947-06-02 1951-04-10 Rca Corp Double polarity pulse generator system
US2629053A (en) * 1948-03-15 1953-02-17 Phillips Petroleum Co Detonation meter calibrator
US2640151A (en) * 1949-07-14 1953-05-26 Westinghouse Electric Corp Blocking oscillator system
BE538790A (fr) * 1954-06-08
CA888373A (en) * 1949-12-21 1971-12-14 Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defence Of Her Majesty's Canadian Government Secret signalling system
US2678425A (en) * 1950-02-21 1954-05-11 Raytheon Mfg Co Analogue computer
US2623952A (en) * 1950-04-01 1952-12-30 Magnetic Equipment Inc Modulating system
US2714704A (en) * 1951-03-23 1955-08-02 Rca Corp Quantizing modulation circuit arrangement
US2689344A (en) * 1951-05-15 1954-09-14 Stanley R Rich Pulse modulated speech transmission system
US2863999A (en) * 1953-04-21 1958-12-09 Rca Corp Wave shaper
US2880320A (en) * 1953-04-23 1959-03-31 Syrl K Ferguson Electronic message timing circuit
US2896501A (en) * 1953-05-28 1959-07-28 Faximile Inc Apparatus for outlining contours
US2813151A (en) * 1953-10-06 1957-11-12 Bell Telephone Labor Inc Impulse signal distortion circuit
US2853634A (en) * 1954-01-05 1958-09-23 Westinghouse Electric Corp Saturable reactor keying for radio transmitters
US2961651A (en) * 1954-04-20 1960-11-22 Frank B Uphoff Synchronized system of interlaced scanning
US2855509A (en) * 1954-04-20 1958-10-07 Edward A Moore Variable delay time pulse generator
US2866094A (en) * 1954-09-29 1958-12-23 Hoffman Electronics Corp Symmetrical to asymmetrical signal conversion circuit
US3008244A (en) * 1954-11-30 1961-11-14 Smith Meeker Engineering Compa Sonar simulator
US2864954A (en) * 1957-11-01 1958-12-16 Edward L Byrne Pulse regenerator circuit
US3095508A (en) * 1959-02-06 1963-06-25 Cons Electrodynamics Corp Alternating current power control system
JP2004506379A (ja) * 2000-08-09 2004-02-26 アヴウェイ．コム・インコーポレイテッド ソース信号内にステガノグラフィで情報ビットを埋め込む方法およびシステム

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB431794A (en) * 1933-01-18 1935-07-16 Emanuele Boselli Improvements in or relating to electric communication systems

Also Published As

Publication number Publication date
US2426225A (en) 1947-08-26
FR951383A (fr) 1949-10-24
GB591884A (en) 1947-09-01
NL81626C (fr)

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