ES182498A1 - A MODULATION SYSTEM - Google Patents

A MODULATION SYSTEM

Info

Publication number
ES182498A1
ES182498A1 ES0182498A ES182498A ES182498A1 ES 182498 A1 ES182498 A1 ES 182498A1 ES 0182498 A ES0182498 A ES 0182498A ES 182498 A ES182498 A ES 182498A ES 182498 A1 ES182498 A1 ES 182498A1
Authority
ES
Spain
Prior art keywords
waves
threshold
fundamental
modulation system
instants
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
ES0182498A
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 ES182498A1 publication Critical patent/ES182498A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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

  • Electrotherapy Devices (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

Un sistema de modulación en tiempo que comprende una fuente de ondas fundamentales de frecuencia estable, medios transmisores provistos de un umbral de discontinuidad y conectados para transmitir todas las porciones de dichas ondas que se encuentran sobre un lado dado de dicho umbral, por lo que las ondas transmitidas poseen ángulos correspondientes a los instantes de intersección de dichas ondas fundamentales con dicho umbral, una fuente de ondas de señales, medios para variar la posición de dicho umbral con respecto a dichas ondas fundamentales bajo control de dichas ondas de señales, por lo que dichos instantes de intersección son desplazados en tiempo, y medios para diferenciar doblemente dichas ondas transmitidas para derivar impulsos correspondientes a dichos ángulos.A time modulation system that comprises a source of fundamental waves of stable frequency, transmitting means provided with a discontinuity threshold and connected to transmit all the portions of said waves that are on a given side of said threshold, whereby the Transmitted waves have angles corresponding to the instants of intersection of said fundamental waves with said threshold, a source of signal waves, means for varying the position of said threshold with respect to said fundamental waves under the control of said signal waves, therefore said intersection instants are shifted in time, and means for doubly differentiating said transmitted waves to derive pulses corresponding to said angles.

ES0182498A 1942-08-24 1948-02-20 A MODULATION SYSTEM Expired ES182498A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US455899A US2438927A (en) 1942-08-24 1942-08-24 Modulation means and method

Publications (1)

Publication Number Publication Date
ES182498A1 true ES182498A1 (en) 1948-04-16

Family

ID=23810692

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0182498A Expired ES182498A1 (en) 1942-08-24 1948-02-20 A MODULATION SYSTEM

Country Status (3)

Country Link
US (1) US2438927A (en)
ES (1) ES182498A1 (en)
GB (1) GB592585A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2556179A (en) * 1946-03-02 1951-06-12 Int Standard Electric Corp Multiple pulse producing system
US2566826A (en) * 1948-02-03 1951-09-04 James R Day Sawtooth frequency modulator
DE860230C (en) * 1948-10-01 1952-12-18 Siemens Ag Method for modulating pulses
US2710921A (en) * 1951-10-19 1955-06-14 Bell Telephone Labor Inc Frequency divider apparatus
US2856525A (en) * 1954-07-09 1958-10-14 Underwood Corp Pulse shaper
US2867752A (en) * 1954-08-11 1959-01-06 Baird Atomic Inc Pulse forming networks
US2971169A (en) * 1957-12-30 1961-02-07 Raytheon Co Pulse position modulation systems
US2939004A (en) * 1958-12-31 1960-05-31 Benjamin R Cole Electronic timing circuit
US3028562A (en) * 1959-01-30 1962-04-03 Rosen George Noise modulation system
US3113274A (en) * 1960-06-22 1963-12-03 Westinghouse Air Brake Co Analog squaring device
US3167720A (en) * 1961-02-10 1965-01-26 Transis Tronics Inc Power amplification means
US8027224B2 (en) * 2009-11-11 2011-09-27 Brown David A Broadband underwater acoustic transducer

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1315529A (en) * 1919-09-09 Walter h
US1655543A (en) * 1924-04-18 1928-01-10 Western Electric Co Transmission system
US2028232A (en) * 1934-07-07 1936-01-21 Submultiple frequency generator
US2061734A (en) * 1934-09-29 1936-11-24 Rca Corp Signaling system
US2209395A (en) * 1934-12-07 1940-07-30 Ibm Signaling system
US2086918A (en) * 1935-08-22 1937-07-13 Rca Corp Method of frequency or phase modulation
GB471731A (en) * 1935-12-04 1937-09-06 Eric Lawrence Casling White Improvements in and relating to pulse-operated thermionic valve apparatus, such for example as frequency dividers, electrical counting arrangements and the like
US2113214A (en) * 1936-10-29 1938-04-05 Rca Corp Method of frequency or phase modulation
NL220878A (en) * 1938-02-16
US2227596A (en) * 1938-03-31 1941-01-07 Rca Corp Signaling system
US2188611A (en) * 1938-06-18 1940-01-30 Rca Corp Impulse generator
US2324275A (en) * 1938-06-23 1943-07-13 Gen Electric Electric translating circuit
US2221666A (en) * 1940-01-20 1940-11-12 Hazeltine Corp Periodic wave repeater
US2280707A (en) * 1940-05-31 1942-04-21 Rca Corp Apparatus for and method of frequency modulating

Also Published As

Publication number Publication date
US2438927A (en) 1948-04-06
GB592585A (en) 1947-09-23

Similar Documents

Publication Publication Date Title
ES182498A1 (en) A MODULATION SYSTEM
CH265359A (en) Frequency-keyed telegraph transmitter.
ES182242A1 (en) A BROADCASTING SYSTEM
ES182397A1 (en) A WAVING SYSTEM
FR941200A (en) Frequency modulation system
ES182162A1 (en) MULTI-CHANNEL TRANSMISSION SYSTEMS
ES182345A1 (en) IMPROVEMENTS IN COMMUNICATION SYSTEMS
ES176997A1 (en) TRANSMISSION SYSTEM BY FREQUENCY MODULATION
ES171458A1 (en) IMPROVEMENTS IN PROTECTIVE SYSTEMS FOR WAVE TRANSMITTER SYSTEMS.
ES182392A1 (en) Communication system
ES162263A1 (en) A SYSTEM FOR RADIO TRANSMISSION BY IMPULSE OF RADIO FREQUENCY SIGNALS
ES182233A1 (en) IMPROVEMENTS IN CUTTING SYSTEMS
CA415080A (en) Telegraph keyboard perforator transmitter
ES182200A1 (en) IMPROVEMENTS IN RADIOELECTRIC COMMUNICATION SYSTEMS
ES172880A1 (en) A DEVICE FOR THE RECEPTION OF SIGNALS TRANSMITTED THROUGH A CARRYING OSCILLATION, MODULATED BY IDENTICAL IMPULSES
ES161633A1 (en) PROVISION OF MODULATING THE FREQUENCY OF A SELF-EXECUTED TRANSMITTER OF SHORT WAVES
CA413190A (en) Modulated carrier wave transmitter
CA402898A (en) Short wave radio transmitter
CA404822A (en) Short wave radio transmitter
ES182491A1 (en) IMPROVEMENTS IN IMPULSE SIGNALING SYSTEMS
CH269347A (en) Precision telegraph transmitter.
FR892129A (en) Carrier frequency telegraph message transmission system
ES176098A1 (en) IMPROVEMENTS OR IN RELATED TO ELECTRICAL IMPLUSES TRANSMISSION SYSTEMS
FR916548A (en) Carrier wave telegraph transmitter
CA406270A (en) Telegraph bias transmitter