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FR77401E - Fast telegraph device - Google Patents

Fast telegraph device

Info

Publication number
FR77401E
FR77401E FR816212A FR816212A FR77401E FR 77401 E FR77401 E FR 77401E FR 816212 A FR816212 A FR 816212A FR 816212 A FR816212 A FR 816212A FR 77401 E FR77401 E FR 77401E
Authority
FR
France
Prior art keywords
fast
telegraph device
telegraph
fast telegraph
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
FR816212A
Other languages
French (fr)
Inventor
Georges Valensi
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
Priority claimed from US715037A external-priority patent/US2947813A/en
Application filed filed Critical
Priority to FR816212A priority Critical patent/FR77401E/en
Application granted granted Critical
Publication of FR77401E publication Critical patent/FR77401E/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04L25/4902—Pulse width modulation; Pulse position 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
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR816212A 1957-06-27 1960-01-19 Fast telegraph device Expired FR77401E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR816212A FR77401E (en) 1957-06-27 1960-01-19 Fast telegraph device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR2947813X 1957-06-27
US715037A US2947813A (en) 1957-06-27 1958-02-13 Improvement in high speed telegraphic systems
FR783006 1958-12-31
FR816212A FR77401E (en) 1957-06-27 1960-01-19 Fast telegraph device

Publications (1)

Publication Number Publication Date
FR77401E true FR77401E (en) 1962-03-02

Family

ID=32398108

Family Applications (1)

Application Number Title Priority Date Filing Date
FR816212A Expired FR77401E (en) 1957-06-27 1960-01-19 Fast telegraph device

Country Status (1)

Country Link
FR (1) FR77401E (en)

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