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FR2390860A1 - Systeme de transmission du son a frequence porteuse - Google Patents

Systeme de transmission du son a frequence porteuse

Info

Publication number
FR2390860A1
FR2390860A1 FR7813488A FR7813488A FR2390860A1 FR 2390860 A1 FR2390860 A1 FR 2390860A1 FR 7813488 A FR7813488 A FR 7813488A FR 7813488 A FR7813488 A FR 7813488A FR 2390860 A1 FR2390860 A1 FR 2390860A1
Authority
FR
France
Prior art keywords
carrier frequency
transmission system
audio channel
transmission
sound 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.)
Granted
Application number
FR7813488A
Other languages
English (en)
Other versions
FR2390860B1 (fr
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.)
Siemens Corp
Original Assignee
Siemens 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
Application filed by Siemens Corp filed Critical Siemens Corp
Publication of FR2390860A1 publication Critical patent/FR2390860A1/fr
Application granted granted Critical
Publication of FR2390860B1 publication Critical patent/FR2390860B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/04—Frequency-transposition arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/16—Monitoring arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Nanotechnology (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Composite Materials (AREA)
  • Electromagnetism (AREA)
  • Stereophonic System (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Transmitters (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

a. L'invention concerne un système de transmission du son à fréquence porteuse. b. La largeur de chaque voie audio est de l'ordre de 7 kHz, on associe à chaque canal, dans la position basse fréquence, au-dessus de sa bande de fréquence audio, un pilote, chaque voie audio est transposée à l'aide de quatre démodulateurs identiques en quadrature et les fréquences porteuses pour la transposition sont choisies de telle manière que dans chaque position de transmission, tous les signaux d'une voie audio et participant à la transmission présentent un écart supérieur de 1 kHz par rapport aux limites des bandes de fréquences données pour le système de transmission d'informations à fréquence porteuse. c. Application à la transmission du son à fréquence porteuse, dont le canal audio correspond sensiblement à une largeur de bande de trois canaux de téléphonie.
FR7813488A 1977-05-12 1978-05-08 Systeme de transmission du son a frequence porteuse Granted FR2390860A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2721479A DE2721479C3 (de) 1977-05-12 1977-05-12 TF-Tonübertragungssystem

Publications (2)

Publication Number Publication Date
FR2390860A1 true FR2390860A1 (fr) 1978-12-08
FR2390860B1 FR2390860B1 (fr) 1981-05-29

Family

ID=6008779

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7813488A Granted FR2390860A1 (fr) 1977-05-12 1978-05-08 Systeme de transmission du son a frequence porteuse

Country Status (19)

Country Link
US (1) US4209664A (fr)
JP (1) JPS53140917A (fr)
AR (1) AR214794A1 (fr)
AT (1) AT363126B (fr)
AU (1) AU508843B2 (fr)
BE (1) BE867070A (fr)
BR (1) BR7802976A (fr)
CA (1) CA1137661A (fr)
CH (1) CH631848A5 (fr)
DE (1) DE2721479C3 (fr)
DK (1) DK208578A (fr)
FR (1) FR2390860A1 (fr)
IN (1) IN149879B (fr)
IT (1) IT1095139B (fr)
LU (1) LU79634A1 (fr)
MX (1) MX143821A (fr)
NL (1) NL7805000A (fr)
NO (1) NO145147C (fr)
YU (1) YU113978A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2161676B (en) * 1984-07-11 1988-05-25 Stc Plc Data transmission system
US4775972A (en) * 1985-05-10 1988-10-04 Itt Corporation, Defense Communications Division Optical fiber communication for local area networks with frequency-division-multiplexing
JP2699860B2 (ja) * 1994-03-24 1998-01-19 日本電気株式会社 パイロット信号検出回路およびパイロット信号検出方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1537576A1 (de) * 1966-09-13 1969-09-18 Ass Elect Ind Schaltungsanordnung fuer Mehrkanal-Fernmeldeanlagen
DE2050028A1 (de) * 1970-10-12 1972-04-13 Siemens Ag Nachrichtenübertragungssystem mit Übertragungskanälen zur Übertragung mehrerer Einseitenband-Übertragungsbänder in ein und demselben Primärgruppenkanal eines Trägerfrequenz-Fernsprechsystems

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL72570C (fr) * 1949-09-02

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1537576A1 (de) * 1966-09-13 1969-09-18 Ass Elect Ind Schaltungsanordnung fuer Mehrkanal-Fernmeldeanlagen
DE2050028A1 (de) * 1970-10-12 1972-04-13 Siemens Ag Nachrichtenübertragungssystem mit Übertragungskanälen zur Übertragung mehrerer Einseitenband-Übertragungsbänder in ein und demselben Primärgruppenkanal eines Trägerfrequenz-Fernsprechsystems

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/74 *

Also Published As

Publication number Publication date
BR7802976A (pt) 1979-01-02
NO145147B (no) 1981-10-12
NO781543L (no) 1978-11-14
ATA341478A (de) 1980-12-15
AU508843B2 (en) 1980-04-03
DK208578A (da) 1978-11-13
DE2721479C3 (de) 1980-04-17
FR2390860B1 (fr) 1981-05-29
NO145147C (no) 1982-01-20
AU3604078A (en) 1979-11-15
DE2721479A1 (de) 1978-11-16
YU113978A (en) 1982-10-31
AT363126B (de) 1981-07-10
JPS53140917A (en) 1978-12-08
IN149879B (fr) 1982-05-15
MX143821A (es) 1981-07-22
IT1095139B (it) 1985-08-10
AR214794A1 (es) 1979-07-31
CA1137661A (fr) 1982-12-14
IT7823262A0 (it) 1978-05-11
NL7805000A (nl) 1978-11-14
CH631848A5 (de) 1982-08-31
US4209664A (en) 1980-06-24
BE867070A (fr) 1978-09-01
DE2721479B2 (de) 1979-08-09
LU79634A1 (de) 1978-11-06

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Legal Events

Date Code Title Description
ST Notification of lapse