ES182133A1 - A RECEPTION SYSTEM - Google Patents

A RECEPTION SYSTEM

Info

Publication number
ES182133A1
ES182133A1 ES0182133A ES182133A ES182133A1 ES 182133 A1 ES182133 A1 ES 182133A1 ES 0182133 A ES0182133 A ES 0182133A ES 182133 A ES182133 A ES 182133A ES 182133 A1 ES182133 A1 ES 182133A1
Authority
ES
Spain
Prior art keywords
wave
pulses
produce
reception system
differentiating
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
ES0182133A
Other languages
Spanish (es)
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 ES182133A1 publication Critical patent/ES182133A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/04—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by counting or integrating cycles of oscillations

Abstract

Un sistema de recepción caracterizado por la demodulación de una onda de frecuencia modulada comprendiendo el estrechamiento de la onda para producir una onda de forma aproximadamente rectangular diferenciando sus ondas rectangulares para producir impulsos alternativamente positivos y negativos cada uno de ellos para cada periodo de la onda, estando desplazados dichos impulsos de acuerdo con la modulación de frecuencia de dicha onda, cambiando dichos impulsos en impulsos de una sola dirección, e integrando los impulsos unidireccionales para producir una onda audible de salida.A reception system characterized by the demodulation of a wave of modulated frequency comprising the narrowing of the wave to produce a wave of approximately rectangular shape, differentiating its rectangular waves to produce alternately positive and negative pulses, each one for each period of the wave, said pulses being offset in accordance with the frequency modulation of said wave, changing said pulses into one-way pulses, and integrating the unidirectional pulses to produce an output audible wave.

ES0182133A 1942-11-13 1948-02-06 A RECEPTION SYSTEM Expired ES182133A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US465451A US2441957A (en) 1942-11-13 1942-11-13 Demodulator for frequency modulated waves

Publications (1)

Publication Number Publication Date
ES182133A1 true ES182133A1 (en) 1948-04-01

Family

ID=23847868

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0182133A Expired ES182133A1 (en) 1942-11-13 1948-02-06 A RECEPTION SYSTEM

Country Status (2)

Country Link
US (1) US2441957A (en)
ES (1) ES182133A1 (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525634A (en) * 1945-12-07 1950-10-10 Rca Corp Pulse communication system
CH249976A (en) * 1945-12-15 1947-07-31 Patelhold Patentverwertung Method and device for two-channel transmission.
US2484556A (en) * 1946-11-12 1949-10-11 Gen Electric Demodulator for frequency modulated signals
US2530081A (en) * 1947-03-28 1950-11-14 Karl F Ross Receiver for wave-length modulated electric waves
US2619547A (en) * 1947-06-27 1952-11-25 Karl F Ross Dual modulation of carrier wave
US2557038A (en) * 1947-10-20 1951-06-12 Karl F Ross Phase discriminator
US2654839A (en) * 1949-02-24 1953-10-06 Lyman R Spaulding Electric pulse generator
US2720584A (en) * 1949-11-22 1955-10-11 Schlumberger Well Surv Corp Frequency discriminator
US2667626A (en) * 1950-01-23 1954-01-26 Bendix Aviat Corp Telemetering system for wells
US2761969A (en) * 1950-01-23 1956-09-04 Bendix Aviat Corp Frequency modulation detector
BE523337A (en) * 1950-03-19
US2605402A (en) * 1950-05-20 1952-07-29 Westinghouse Electric Corp Vacuum tube keying of resistance coupling amplifier
US2629775A (en) * 1950-06-17 1953-02-24 Rca Corp Signal converter
US2731520A (en) * 1952-03-10 1956-01-17 Phillips Petroleum Co Pulse-amplitude measuring circuit compensated for varying frequency
US2817833A (en) * 1953-04-24 1957-12-24 James O Hutchinson Accurate range indicator
US2940052A (en) * 1954-03-08 1960-06-07 Edgar W Van Winkle Frequency control and synchronizing circuit
US2947863A (en) * 1954-03-17 1960-08-02 Hoffman Electronics Corp Linear discriminators or the like
US2927279A (en) * 1954-06-14 1960-03-01 Cgs Lab Inc Variable frequency oscillator system
US2962553A (en) * 1954-11-23 1960-11-29 Donald E Campbell Coding and decoding system
US2824227A (en) * 1954-12-21 1958-02-18 Hazeltine Research Inc Variable delay system
US2821629A (en) * 1955-08-31 1958-01-28 Tele Dynamics Inc Limiter circuit
US2921466A (en) * 1957-10-31 1960-01-19 Magnaflux Corp Sonic thickness measuring apparatus
NL133956C (en) * 1961-01-24
NL273843A (en) * 1961-01-24
NL273847A (en) * 1961-01-24

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2050059A (en) * 1934-03-01 1936-08-04 Rca Corp Relay system
US2061734A (en) * 1934-09-29 1936-11-24 Rca Corp Signaling system
US2113214A (en) * 1936-10-29 1938-04-05 Rca Corp Method of frequency or phase modulation
BE432538A (en) * 1938-04-11
US2237522A (en) * 1939-05-12 1941-04-08 Rca Corp Frequency modulation
US2284444A (en) * 1940-08-27 1942-05-26 Bell Telephone Labor Inc Demodulation circuit
US2286377A (en) * 1940-08-31 1942-06-16 Rca Corp Frequency modulation receiver
US2299252A (en) * 1941-05-29 1942-10-20 Bell Telephone Labor Inc Frequency detector

Also Published As

Publication number Publication date
US2441957A (en) 1948-05-25

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