NL81626C - - Google Patents
Info
- Publication number
- NL81626C NL81626C NL81626DA NL81626C NL 81626 C NL81626 C NL 81626C NL 81626D A NL81626D A NL 81626DA NL 81626 C NL81626 C NL 81626C
- Authority
- NL
- Netherlands
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)
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 |
---|---|
NL81626C true NL81626C (no) |
Family
ID=24119350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL81626D NL81626C (no) | 1944-04-20 |
Country Status (5)
Country | Link |
---|---|
US (1) | US2426225A (no) |
BE (1) | BE479062A (no) |
FR (1) | FR951383A (no) |
GB (1) | GB591884A (no) |
NL (1) | NL81626C (no) |
Families Citing this family (25)
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 |
BE567481A (no) * | 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 |
US2855509A (en) * | 1954-04-20 | 1958-10-07 | Edward A Moore | Variable delay time pulse generator |
US2961651A (en) * | 1954-04-20 | 1960-11-22 | Frank B Uphoff | Synchronized system of interlaced scanning |
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 |
AU2001278163A1 (en) * | 2000-08-09 | 2002-02-18 | Avway.Com Inc. | Method and system for steganographically embedding information bits in source signals |
Family Cites Families (1)
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 |
-
0
- NL NL81626D patent/NL81626C/xx active
- BE BE479062D patent/BE479062A/xx unknown
-
1944
- 1944-04-20 US US531859A patent/US2426225A/en not_active Expired - Lifetime
-
1945
- 1945-04-13 GB GB9320/45A patent/GB591884A/en not_active Expired
-
1947
- 1947-08-07 FR FR951383D patent/FR951383A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB591884A (en) | 1947-09-01 |
BE479062A (no) | |
FR951383A (fr) | 1949-10-24 |
US2426225A (en) | 1947-08-26 |