FR2408256A1 - Procede de transmission en modulation de frequence de donnees codees en binaire et dispositifs de mise en oeuvre - Google Patents

Procede de transmission en modulation de frequence de donnees codees en binaire et dispositifs de mise en oeuvre

Info

Publication number
FR2408256A1
FR2408256A1 FR7733265A FR7733265A FR2408256A1 FR 2408256 A1 FR2408256 A1 FR 2408256A1 FR 7733265 A FR7733265 A FR 7733265A FR 7733265 A FR7733265 A FR 7733265A FR 2408256 A1 FR2408256 A1 FR 2408256A1
Authority
FR
France
Prior art keywords
frequency
coded data
works
modulator
frequency modulated
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.)
Withdrawn
Application number
FR7733265A
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.)
ELINFA
Original Assignee
ELINFA
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 ELINFA filed Critical ELINFA
Priority to FR7733265A priority Critical patent/FR2408256A1/fr
Publication of FR2408256A1 publication Critical patent/FR2408256A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

L'INVENTION CONCERNE UN PROCEDE DE TRANSMISSION DE DONNEES CODEES EN BINAIRE AU MOYEN DE DEUX SIGNAUX DISTINCTS REPRESENTANT DEUX VALEURS OU BITS "1" ET "0". LE PROCEDE SELON L'INVENTION EST REMARQUABLE EN CE QU'IL CONSISTE A REPRESENTER CHAQUE BIT "1 (OU RESPECTIVEMENT "0") PAR UN NOMBRE ENTIER N DE PERIODES D'UN SIGNAL PERIODIQUE DE FREQUENCE F ET CHAQUE AUTRE BIT "0" (OU RESPECTIVEMENT "1") PAR UN NOMBRE ENTIER DOUBLE 2N DE PERIODES D'UN SIGNAL PERIODIQUE SYNCHRONE DU PRECEDENT ET DE FREQUENCE DOUBLE 2F, DE TELLE SORTE QUE LES DEUX TYPES DE BIT SONT REPRESENTES PAR DES SIGNAUX PERIODIQUES DE MEME DUREE, UN MODULATEUR D'EMISSION ET UN DEMODULATEUR DE RECEPTION ETANT PREVUS POUR LA MISE EN FORME DES SIGNAUX SELON LES SYSTEMES D'EMISSION ET DE RECEPTION UTILISES. L'INVENTION CONCERNE EGALEMENT UN MODULATEUR ET UN DEMODULATEUR POUR LA MISE EN OEUVRE DU PROCEDE.
FR7733265A 1977-11-04 1977-11-04 Procede de transmission en modulation de frequence de donnees codees en binaire et dispositifs de mise en oeuvre Withdrawn FR2408256A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7733265A FR2408256A1 (fr) 1977-11-04 1977-11-04 Procede de transmission en modulation de frequence de donnees codees en binaire et dispositifs de mise en oeuvre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7733265A FR2408256A1 (fr) 1977-11-04 1977-11-04 Procede de transmission en modulation de frequence de donnees codees en binaire et dispositifs de mise en oeuvre

Publications (1)

Publication Number Publication Date
FR2408256A1 true FR2408256A1 (fr) 1979-06-01

Family

ID=9197285

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7733265A Withdrawn FR2408256A1 (fr) 1977-11-04 1977-11-04 Procede de transmission en modulation de frequence de donnees codees en binaire et dispositifs de mise en oeuvre

Country Status (1)

Country Link
FR (1) FR2408256A1 (fr)

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Legal Events

Date Code Title Description
ST Notification of lapse