ES182397A1 - UN SISTEMA DE ONDULACIoN - Google Patents

UN SISTEMA DE ONDULACIoN

Info

Publication number
ES182397A1
ES182397A1 ES0182397A ES182397A ES182397A1 ES 182397 A1 ES182397 A1 ES 182397A1 ES 0182397 A ES0182397 A ES 0182397A ES 182397 A ES182397 A ES 182397A ES 182397 A1 ES182397 A1 ES 182397A1
Authority
ES
Spain
Prior art keywords
waves
those portions
limits
base
transmit
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
ES0182397A
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES182397A1 publication Critical patent/ES182397A1/es
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04B14/026—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse time characteristics modulation, e.g. width, position, interval
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Selective Calling Equipment (AREA)
  • Amplitude Modulation (AREA)

Abstract

Sistema de modulación por tiempo caracterizado, por una fuente de onda de base de frecuencia fija, medios primeros de enganche adaptados para transmitir solamente aquellas porciones de dichas ondas que se encuentran en un lado dado de un umbral predeterminado, mientras es substancia bloquea la transmisión de aquellas porciones que se encuentran en el otro lado de dicho umbral, medios secundarios de enganche conectados para recibir las ondas enganchadas de dicho primer medio de enganche y adaptados para transmitir solamente aquellas porciones de dichas ondas que se encuentran entre los límites predeterminados alto y bajo, mientras substancialmente bloquean la transmisión de aquellas porciones que se encuentran fuera de dichos límites, un diferenciador para diferenciar las ondas transmitidas desde dichos medios secundarios de enganche para producir impulsos, una fuente de señales moduladoras de frecuencia más baja que las dichas ondas de base y un control para variar la posición de dichas ondas de base relativamente de dichos límites bajo el control de dichas señales moduladoras.
ES0182397A 1942-08-24 1948-02-16 UN SISTEMA DE ONDULACIoN Expired ES182397A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US455898A US2434936A (en) 1942-08-24 1942-08-24 Modulation system

Publications (1)

Publication Number Publication Date
ES182397A1 true ES182397A1 (es) 1948-04-16

Family

ID=23810687

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0182397A Expired ES182397A1 (es) 1942-08-24 1948-02-16 UN SISTEMA DE ONDULACIoN

Country Status (5)

Country Link
US (1) US2434936A (es)
BE (2) BE474798A (es)
ES (1) ES182397A1 (es)
FR (5) FR58652E (es)
GB (1) GB592584A (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578939A (en) * 1948-03-01 1951-12-18 Moran Instr Corp Telemetering
US2572900A (en) * 1948-03-22 1951-10-30 Motorola Inc Audio compression system
US2550878A (en) * 1948-11-19 1951-05-01 Hans H Staub Pulsing circuit
US3063053A (en) * 1957-03-29 1962-11-06 Sun Oil Co Seismic recording and reproducing methods, apparatus and records
US3225309A (en) * 1963-12-05 1965-12-21 John H Phelps Pulse wave generator with independent control of pulse repetition frequency and duty cycle

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1655543A (en) * 1924-04-18 1928-01-10 Western Electric Co Transmission system
US2061734A (en) * 1934-09-29 1936-11-24 Rca Corp Signaling system
US2086918A (en) * 1935-08-22 1937-07-13 Rca Corp Method of frequency or phase modulation
US2105538A (en) * 1936-04-29 1938-01-18 Rca Corp Reduction of noise
US2113214A (en) * 1936-10-29 1938-04-05 Rca Corp Method of frequency or phase modulation
NL91748C (es) * 1938-02-16
US2227596A (en) * 1938-03-31 1941-01-07 Rca Corp Signaling system
US2280707A (en) * 1940-05-31 1942-04-21 Rca Corp Apparatus for and method of frequency modulating
US2266541A (en) * 1940-10-02 1941-12-16 Rca Corp Limiter output control

Also Published As

Publication number Publication date
BE479419A (es)
FR951003A (fr) 1949-10-13
FR64851E (fr) 1955-12-14
FR65451E (fr) 1956-02-21
FR64852E (fr) 1955-12-14
BE474798A (es)
GB592584A (en) 1947-09-23
US2434936A (en) 1948-01-27
FR58652E (fr) 1954-03-02

Similar Documents

Publication Publication Date Title
ES182498A1 (es) UN SISTEMA DE MODULACIoN
FR56849E (fr) Système de transmission à modulation de fréquence
FR941200A (fr) Système de modulation de fréquence
CH231617A (de) Einrichtung zur Übertragung von Signalen mittels einer in der Frequenz modulierten Trägerschwingung.
FR64851E (fr) Système de modulation d'impulsions pour radiocommunications
ES176997A1 (es) Sistema de transmisión por modulación de frecuencia
ES159330A1 (es) Un aparato para establecer uniones de comunicación mediante onda portadora modulada
CH258469A (fr) Dispositif pour la modulation de fréquence.
FR932691A (fr) Transmetteur par onde porteuse à haute fréquence modulée
CA430864A (en) Frequency modulation signalling system
FR948609A (fr) Récepteur à modulation de fréquence
FR950682A (fr) Récepteur à modulation de fréquence
DK82817C (da) Apparat til frembringelse, forstærkning eller modulation af millimeterbølger.
AU116425B2 (en) Frequency modulation receiver
AU117950B2 (en) Frequency modulation receiver
ES163960A1 (es) Un dispositivo destinado a la recepcion de senales transmitidas por medio de una onda portadora moduladada por impulsos consecutivos de duracion variable
CA408235A (en) Modulated carrier wave transmitter
FR911438A (fr) Système de radiogonométrie à modulation de fréquence
DK85603C (da) Fremgangsmåde til overføring af impulskodemodulerede signaler, samt impulskodemodulator til udøvelse af fremgangsmåden.
CA403476A (en) Modulated carrier wave radio transmitter
CA408234A (en) Modulated carrier wave radio transmitter
AU420242A (en) Frequency modulation receiver
AU736242A (en) Frequency modulation receiver
AU117126B2 (en) Frequency modulated carrier wave receiver circuits
AU117936B2 (en) Frequency modulation detection system