US2468038A - Frequency modulation stabilization system - Google Patents

Frequency modulation stabilization system Download PDF

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Publication number
US2468038A
US2468038A US735961A US73596147A US2468038A US 2468038 A US2468038 A US 2468038A US 735961 A US735961 A US 735961A US 73596147 A US73596147 A US 73596147A US 2468038 A US2468038 A US 2468038A
Authority
US
United States
Prior art keywords
frequency
pulses
modulated
oscillator
output
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 - Lifetime
Application number
US735961A
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English (en)
Inventor
Clavier Andre Gabriel
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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
Priority to BE482222D priority Critical patent/BE482222A/xx
Priority to FR963218D priority patent/FR963218A/fr
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to US735961A priority patent/US2468038A/en
Priority to ES182282A priority patent/ES182282A1/es
Priority to GB4344/48A priority patent/GB638336A/en
Application granted granted Critical
Publication of US2468038A publication Critical patent/US2468038A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Selective Calling Equipment (AREA)
US735961A 1947-03-20 1947-03-20 Frequency modulation stabilization system Expired - Lifetime US2468038A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE482222D BE482222A (es) 1947-03-20
FR963218D FR963218A (es) 1947-03-20
US735961A US2468038A (en) 1947-03-20 1947-03-20 Frequency modulation stabilization system
ES182282A ES182282A1 (es) 1947-03-20 1948-02-11 Sistemas de transmisión
GB4344/48A GB638336A (en) 1947-03-20 1948-02-13 Improvements in or relating to carrier wave communication systems employing frequency modulations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US735961A US2468038A (en) 1947-03-20 1947-03-20 Frequency modulation stabilization system

Publications (1)

Publication Number Publication Date
US2468038A true US2468038A (en) 1949-04-26

Family

ID=24957899

Family Applications (1)

Application Number Title Priority Date Filing Date
US735961A Expired - Lifetime US2468038A (en) 1947-03-20 1947-03-20 Frequency modulation stabilization system

Country Status (5)

Country Link
US (1) US2468038A (es)
BE (1) BE482222A (es)
ES (1) ES182282A1 (es)
FR (1) FR963218A (es)
GB (1) GB638336A (es)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559644A (en) * 1948-09-18 1951-07-10 Rca Corp Pulse multiplex system
US2652536A (en) * 1950-07-07 1953-09-15 James R Alburger Radio broadcast system
US2874216A (en) * 1953-10-27 1959-02-17 Gen Electric Automatic signal control system
US2889521A (en) * 1954-01-12 1959-06-02 Itt Automatic frequency control in pulse modulation systems
US3037568A (en) * 1958-09-16 1962-06-05 Hughes Aircraft Co Digital communications receiver
US4656512A (en) * 1985-05-16 1987-04-07 Grumman Aerospace Corporation Multiple audio transmission system using a single video color carrier

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2201978A (en) * 1938-10-26 1940-05-28 Rca Corp Frequency control circuits
US2296962A (en) * 1939-12-22 1942-09-29 Rca Corp Frequency modulation
US2377326A (en) * 1942-04-06 1945-06-05 Rca Corp Automatic frequency control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2201978A (en) * 1938-10-26 1940-05-28 Rca Corp Frequency control circuits
US2296962A (en) * 1939-12-22 1942-09-29 Rca Corp Frequency modulation
US2377326A (en) * 1942-04-06 1945-06-05 Rca Corp Automatic frequency control system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559644A (en) * 1948-09-18 1951-07-10 Rca Corp Pulse multiplex system
US2652536A (en) * 1950-07-07 1953-09-15 James R Alburger Radio broadcast system
US2874216A (en) * 1953-10-27 1959-02-17 Gen Electric Automatic signal control system
US2889521A (en) * 1954-01-12 1959-06-02 Itt Automatic frequency control in pulse modulation systems
US3037568A (en) * 1958-09-16 1962-06-05 Hughes Aircraft Co Digital communications receiver
US4656512A (en) * 1985-05-16 1987-04-07 Grumman Aerospace Corporation Multiple audio transmission system using a single video color carrier

Also Published As

Publication number Publication date
FR963218A (es) 1950-07-01
ES182282A1 (es) 1948-04-01
GB638336A (en) 1950-06-07
BE482222A (es)

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