FR2345044A1 - Terminal for multiplex frequency divided transmission - has A:D and D:A conversion units processing voice signals - Google Patents

Terminal for multiplex frequency divided transmission - has A:D and D:A conversion units processing voice signals

Info

Publication number
FR2345044A1
FR2345044A1 FR7607724A FR7607724A FR2345044A1 FR 2345044 A1 FR2345044 A1 FR 2345044A1 FR 7607724 A FR7607724 A FR 7607724A FR 7607724 A FR7607724 A FR 7607724A FR 2345044 A1 FR2345044 A1 FR 2345044A1
Authority
FR
France
Prior art keywords
terminal
unit
voice signals
signal
frequency divided
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
FR7607724A
Other languages
French (fr)
Other versions
FR2345044B1 (en
Inventor
Maurice Bellanger
Paul Caniquit
Jacques Rossaert
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.)
Telecommunications Radioelectriques et Telephoniques SA TRT
Original Assignee
Telecommunications Radioelectriques et Telephoniques SA TRT
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 Telecommunications Radioelectriques et Telephoniques SA TRT filed Critical Telecommunications Radioelectriques et Telephoniques SA TRT
Priority to FR7607724A priority Critical patent/FR2345044A1/en
Publication of FR2345044A1 publication Critical patent/FR2345044A1/en
Application granted granted Critical
Publication of FR2345044B1 publication Critical patent/FR2345044B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/04—Frequency-transposition arrangements
    • H04J1/05—Frequency-transposition arrangements using digital techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

A terminal for multiplex frequency divided transmission has a voice-digital unit. Conversion is carried out in one unit and avoids diaphonic affects. The terminal has a conversion unit which changes the voice signals into an analogue signal for transmission. It also converts a received analogue signal into voice signals. It has in its transmitting section and in its receiving section a digital unit. It also has an encoder-decoder unit which operates as an encoder during a first and second time interval, and as a decoder during a third and fourth time interval whilst sampling the multiplex signal. The encoder-decoder unit is connected to switches to obtain samples of either the received signal or the signal to be transmitted. It has a comparator and a control circuit.
FR7607724A 1976-03-17 1976-03-17 Terminal for multiplex frequency divided transmission - has A:D and D:A conversion units processing voice signals Granted FR2345044A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7607724A FR2345044A1 (en) 1976-03-17 1976-03-17 Terminal for multiplex frequency divided transmission - has A:D and D:A conversion units processing voice signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7607724A FR2345044A1 (en) 1976-03-17 1976-03-17 Terminal for multiplex frequency divided transmission - has A:D and D:A conversion units processing voice signals

Publications (2)

Publication Number Publication Date
FR2345044A1 true FR2345044A1 (en) 1977-10-14
FR2345044B1 FR2345044B1 (en) 1981-07-31

Family

ID=9170580

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7607724A Granted FR2345044A1 (en) 1976-03-17 1976-03-17 Terminal for multiplex frequency divided transmission - has A:D and D:A conversion units processing voice signals

Country Status (1)

Country Link
FR (1) FR2345044A1 (en)

Also Published As

Publication number Publication date
FR2345044B1 (en) 1981-07-31

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Legal Events

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