FR942970A - Radio broadcasting installation for frequency modulated signals - Google Patents

Radio broadcasting installation for frequency modulated signals

Info

Publication number
FR942970A
FR942970A FR942970DA FR942970A FR 942970 A FR942970 A FR 942970A FR 942970D A FR942970D A FR 942970DA FR 942970 A FR942970 A FR 942970A
Authority
FR
France
Prior art keywords
modulated signals
frequency modulated
radio broadcasting
broadcasting installation
installation
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
French (fr)
Inventor
Edwin Howard Armstrong
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23242802&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FR942970(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed filed Critical
Application granted granted Critical
Publication of FR942970A publication Critical patent/FR942970A/en
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
    • H04B14/002—Transmission systems not characterised by the medium used for transmission characterised by the use of a carrier modulation
    • H04B14/006—Angle modulation
FR942970D 1940-02-19 1947-03-10 Radio broadcasting installation for frequency modulated signals Expired FR942970A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US319569A US2215284A (en) 1940-02-19 1940-02-19 Frequency modulation signaling system

Publications (1)

Publication Number Publication Date
FR942970A true FR942970A (en) 1949-02-23

Family

ID=23242802

Family Applications (1)

Application Number Title Priority Date Filing Date
FR942970D Expired FR942970A (en) 1940-02-19 1947-03-10 Radio broadcasting installation for frequency modulated signals

Country Status (4)

Country Link
US (2) US2215284A (en)
BE (1) BE472015A (en)
ES (1) ES177793A1 (en)
FR (1) FR942970A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433093A (en) * 1943-04-27 1947-12-23 Rca Corp Amplitude modulation adapter system
US2585605A (en) * 1946-11-12 1952-02-12 Wallace Navigational system
US2489313A (en) * 1947-03-08 1949-11-29 Int Standard Electric Corp Frequency modulation discriminator
NL147080B (en) * 1948-06-19 Mead Corp PROCESS FOR THE MANUFACTURE OF A RECORDING MATERIAL, SUITABLE FOR DEVELOPING COLORED IMAGES WITH A COLOR REAGENS, AND RECORDING MATERIAL THEREFORE MANUFACTURED.
US2617923A (en) * 1949-08-31 1952-11-11 Kxok Inc Radio broadcasting system with selective program elimination
US2972046A (en) * 1957-08-30 1961-02-14 Research Corp Bandwidth modulation information transfer system
BE620454A (en) * 1961-07-20
US3444469A (en) * 1965-04-16 1969-05-13 Nippon Electric Co Variable-emphasis communications system of the frequency or phasemodulation type
US4053834A (en) 1973-04-12 1977-10-11 Textron, Inc. Narrowband phase modulation communication system which eliminates thresholding
JP2821198B2 (en) * 1989-10-02 1998-11-05 キヤノン株式会社 Frequency processing circuit

Also Published As

Publication number Publication date
ES177793A1 (en) 1947-07-16
USRE21660E (en) 1940-12-17
US2215284A (en) 1940-09-17
BE472015A (en)

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