FR863144A - Procédé et système de transmission des ondes - Google Patents

Procédé et système de transmission des ondes

Info

Publication number
FR863144A
FR863144A FR863144DA FR863144A FR 863144 A FR863144 A FR 863144A FR 863144D A FR863144D A FR 863144DA FR 863144 A FR863144 A FR 863144A
Authority
FR
France
Prior art keywords
transmission method
wave transmission
wave
transmission
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.)
PRESS WIRELESS
Original Assignee
PRESS WIRELESS
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 PRESS WIRELESS filed Critical PRESS WIRELESS
Application granted granted Critical
Publication of FR863144A publication Critical patent/FR863144A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • 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
    • H03D3/26—Demodulation of angle-, frequency- or phase- modulated oscillations by means of sloping amplitude/frequency characteristic of tuned or reactive circuit
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/08—Transmission systems not characterised by the medium used for transmission characterised by the use of a sub-carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00095—Systems or arrangements for the transmission of the picture signal
    • H04N1/00103—Systems or arrangements for the transmission of the picture signal specially adapted for radio transmission, e.g. via satellites
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)
  • Amplitude Modulation (AREA)
FR863144D 1939-10-27 1940-01-30 Procédé et système de transmission des ondes Expired FR863144A (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US301563A US2299937A (en) 1939-10-27 1939-10-27 Wave signaling system
US434498A US2398054A (en) 1939-10-27 1942-03-13 Modulating method and apparatus
US459759A US2378373A (en) 1939-10-27 1942-09-26 Signal receiving and reproducing system

Publications (1)

Publication Number Publication Date
FR863144A true FR863144A (fr) 1941-03-24

Family

ID=27404822

Family Applications (1)

Application Number Title Priority Date Filing Date
FR863144D Expired FR863144A (fr) 1939-10-27 1940-01-30 Procédé et système de transmission des ondes

Country Status (3)

Country Link
US (3) US2299937A (fr)
FR (1) FR863144A (fr)
GB (2) GB537689A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH269361A (fr) * 1947-04-15 1950-06-30 Radio Electr Soc Fr Discriminateur de fréquence à très grande largeur relative de bande.
US2673891A (en) * 1949-02-17 1954-03-30 Bell Telephone Labor Inc Control of transmission in two-way telephotograph systems
NL169675B (nl) * 1952-05-17 Imp Tobacco Group Ltd Inrichting voor het behandelen van een vel vezelmateriaal, alsmede een zodanig behandeld vezelmateriaal.

Also Published As

Publication number Publication date
GB537699A (en) 1941-07-02
US2398054A (en) 1946-04-09
US2299937A (en) 1942-10-27
GB537689A (en) 1941-07-02
US2378373A (en) 1945-06-12

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