FR982821A - Perfectionnements aux procédés et systèmes de stabilisation de la fréquence d'oscillateurs - Google Patents

Perfectionnements aux procédés et systèmes de stabilisation de la fréquence d'oscillateurs

Info

Publication number
FR982821A
FR982821A FR982821DA FR982821A FR 982821 A FR982821 A FR 982821A FR 982821D A FR982821D A FR 982821DA FR 982821 A FR982821 A FR 982821A
Authority
FR
France
Prior art keywords
oscillators
stabilizing
systems
frequency
methods
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
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Application granted granted Critical
Publication of FR982821A publication Critical patent/FR982821A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/04—Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier
    • H04N7/045—Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier the carrier being frequency modulated
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/26—Automatic control of frequency or phase; Synchronisation using energy levels of molecules, atoms, or subatomic particles as a frequency reference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
    • H04N5/126—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising whereby the synchronisation signal indirectly commands a frequency generator

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
FR982821D 1948-09-25 1949-03-11 Perfectionnements aux procédés et systèmes de stabilisation de la fréquence d'oscillateurs Expired FR982821A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US51253A US2559719A (en) 1948-09-25 1948-09-25 Frequency-stabilizing method and system

Publications (1)

Publication Number Publication Date
FR982821A true FR982821A (fr) 1951-06-15

Family

ID=21970199

Family Applications (1)

Application Number Title Priority Date Filing Date
FR982821D Expired FR982821A (fr) 1948-09-25 1949-03-11 Perfectionnements aux procédés et systèmes de stabilisation de la fréquence d'oscillateurs

Country Status (3)

Country Link
US (1) US2559719A (fr)
ES (1) ES187413A1 (fr)
FR (1) FR982821A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2197263A1 (fr) * 1972-08-23 1974-03-22 Labo Electronique Physique

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699503A (en) * 1949-04-30 1955-01-11 Lyons Harold Atomic clock
US2631269A (en) * 1949-09-14 1953-03-10 Rca Corp Method and system for frequencymodulating stabilized oscillators
US2690538A (en) * 1949-12-29 1954-09-28 Rca Corp Frequency-stabilizing and frequency-modulating system for oscillators
US2750505A (en) * 1950-08-11 1956-06-12 Gen Electric Co Ltd Automatic frequency control
US2666136A (en) * 1950-10-31 1954-01-12 Rca Corp Frequency synchronizing apparatus
US2743365A (en) * 1951-04-27 1956-04-24 Rca Corp Frequency stabilization
FR2260221B1 (fr) * 1974-02-04 1980-01-11 Matra

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2279659A (en) * 1937-04-13 1942-04-14 Rca Corp Frequency modulator
US2296919A (en) * 1940-07-17 1942-09-29 Rca Corp Direct-current insertion
BE475115A (fr) * 1940-11-27
GB577758A (en) * 1944-03-25 1946-05-30 Eric Lawrence Casling White Improvements in or relating to apparatus for transmitting or receiving frequency-modulated oscillations
US2475074A (en) * 1944-08-31 1949-07-05 Philco Corp Frequency stabilizing system
US2462841A (en) * 1946-03-18 1949-03-01 Raytheon Mfg Co Frequency-stabilizing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2197263A1 (fr) * 1972-08-23 1974-03-22 Labo Electronique Physique

Also Published As

Publication number Publication date
ES187413A1 (es) 1949-05-01
US2559719A (en) 1951-07-10

Similar Documents

Publication Publication Date Title
FR982821A (fr) Perfectionnements aux procédés et systèmes de stabilisation de la fréquence d'oscillateurs
FR979438A (fr) Perfectionnements aux systèmes d'antennes
FR983567A (fr) Systèmes de modulation de fréquence
FR966125A (fr) Perfectionnement aux procédés de préparation de solution de persulfate d'ammonium
FR1007495A (fr) Perfectionnements aux procédés et systèmes pour stabiliser la fréquence d'un oscillateur
FR998832A (fr) Perfectionnements aux procédés et systèmes de stabilisation d'oscillateurs à modulation de fréquence
FR1009385A (fr) Perfectionnements aux systèmes diviseurs et multiplicateurs de fréquence
FR1007058A (fr) Récepteur combiné d'images et de sons
FR921178A (fr) Perfectionnements aux procédés et dispositifs de stabilisation de la fréquence d'oscillateurs à quartz
AT171655B (de) Vorrichtung zur genauen Stabilisierung oder Bestimmung der Frequenz von Schwingungen
ES184877A1 (es) Mejoras en la estabilización de frecuencia de oscilaciones de microondas
FR995922A (fr) Système et procédé de stabilisation de la fréquence
FR972497A (fr) Perfectionnements à la stabilisation de la fréquence d'oscillations de micro-ondes
CA447414A (fr) Amplificateur et oscillateur a haute frequence
FR978743A (fr) Perfectionnements à la production d'oscillations de micro-ondes de fréquences étalons
FR977334A (fr) Perfectionnements aux montures de lunettes en matières plastiques et analogues
AU147253B2 (en) Frequency stabilization by use of molecular resonance ina gas
CA453725A (fr) Stabilisation d'halobutenes
CA453726A (fr) Stabilisation d'halobutenes
CA453724A (fr) Stabilisation d'halobutenes
FR62161E (fr) Perfectionnements aux systèmes de stabilisation de fréquence d'oscillateurs à hyperfréquences à accord électronique
FI25588A (fi) Metod och anordning för utnyttjande av Stark- eller Zeeman-effekten vid frekvensstabilisering
AT174634B (de) Einrichtung zur Stabilisierung der Frequenz von Mikrowellenoszillatoren
FR986127A (fr) Perfectionnements aux systèmes amplificateurs
CA448885A (fr) Stabilisation de frequence