FR1220117A - Fast telegraph device - Google Patents

Fast telegraph device

Info

Publication number
FR1220117A
FR1220117A FR445A FR445A FR1220117A FR 1220117 A FR1220117 A FR 1220117A FR 445 A FR445 A FR 445A FR 445 A FR445 A FR 445A FR 1220117 A FR1220117 A FR 1220117A
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
FR445A
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
Application filed filed Critical
Priority to FR445A priority Critical patent/FR1220117A/en
Application granted granted Critical
Publication of FR1220117A publication Critical patent/FR1220117A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B26/00—Alarm systems in which substations are interrogated in succession by a central station
    • G08B26/008—Alarm systems in which substations are interrogated in succession by a central station central annunciator means of the sensed conditions, e.g. displaying or registering
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • General Physics & Mathematics (AREA)
FR445A 1958-12-31 1958-12-31 Fast telegraph device Expired FR1220117A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR445A FR1220117A (en) 1958-12-31 1958-12-31 Fast telegraph device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR445A FR1220117A (en) 1958-12-31 1958-12-31 Fast telegraph device

Publications (1)

Publication Number Publication Date
FR1220117A true FR1220117A (en) 1960-05-23

Family

ID=32398092

Family Applications (1)

Application Number Title Priority Date Filing Date
FR445A Expired FR1220117A (en) 1958-12-31 1958-12-31 Fast telegraph device

Country Status (1)

Country Link
FR (1) FR1220117A (en)

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