FR1443424A - Système de télécommunication - Google Patents

Système de télécommunication

Info

Publication number
FR1443424A
FR1443424A FR17949A FR17949A FR1443424A FR 1443424 A FR1443424 A FR 1443424A FR 17949 A FR17949 A FR 17949A FR 17949 A FR17949 A FR 17949A FR 1443424 A FR1443424 A FR 1443424A
Authority
FR
France
Prior art keywords
telecommunication system
telecommunication
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
FR17949A
Other languages
English (en)
Inventor
Gerald Rabow
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric 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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR1443424A publication Critical patent/FR1443424A/fr
Expired 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
    • H04L27/26—Systems using multi-frequency codes
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4917—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/06—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/04—Channels characterised by the type of signal the signals being represented by different amplitudes or polarities, e.g. quadriplex
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Transmitters (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Dc Digital Transmission (AREA)
  • Radar Systems Or Details Thereof (AREA)
FR17949A 1964-05-21 1965-05-21 Système de télécommunication Expired FR1443424A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US369234A US3398239A (en) 1964-05-21 1964-05-21 Multilevel coded communication system employing frequency-expanding code conversion

Publications (1)

Publication Number Publication Date
FR1443424A true FR1443424A (fr) 1966-06-24

Family

ID=23454663

Family Applications (1)

Application Number Title Priority Date Filing Date
FR17949A Expired FR1443424A (fr) 1964-05-21 1965-05-21 Système de télécommunication

Country Status (8)

Country Link
US (1) US3398239A (fr)
BE (1) BE664127A (fr)
CH (1) CH452597A (fr)
DE (1) DE1284454B (fr)
ES (1) ES313152A1 (fr)
FR (1) FR1443424A (fr)
GB (1) GB1089446A (fr)
NL (1) NL6506404A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5114845B1 (fr) * 1968-07-22 1976-05-12
GB1238113A (fr) * 1969-03-07 1971-07-07
US3603976A (en) * 1969-09-24 1971-09-07 Nasa Modular encoder
FR2251960B1 (fr) * 1973-11-16 1977-08-12 Thomson Csf
US4001563A (en) * 1974-09-17 1977-01-04 Thomson-Csf Communication system for disseminating coded digital data in analogue form utilizing an orthogonal transformation
JPS5591009A (en) * 1978-12-28 1980-07-10 Canon Inc Switching control unit
US5485977A (en) * 1994-09-26 1996-01-23 Union Switch & Signal Inc. Reduced harmonic switching mode apparatus and method for railroad vehicle signaling

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977416A (en) * 1950-12-11 1961-03-28 Nat Res Dev Electric signalling systems
US2905812A (en) * 1955-04-18 1959-09-22 Collins Radio Co High information capacity phase-pulse multiplex system
DE1061832B (de) * 1958-05-03 1959-07-23 Telefunken Gmbh UEbertragungssystem fuer binaer codierte Signale mit verminderter Bandbreite
US3030614A (en) * 1959-09-03 1962-04-17 Space General Corp Telemetry system
US3036157A (en) * 1960-05-09 1962-05-22 Gen Dynamics Corp Orthogonal function communication system

Also Published As

Publication number Publication date
BE664127A (fr) 1965-11-19
CH452597A (de) 1968-03-15
NL6506404A (fr) 1965-11-22
ES313152A1 (es) 1966-04-01
GB1089446A (en) 1967-11-01
DE1284454B (de) 1968-12-05
US3398239A (en) 1968-08-20

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