FR1054746A - Improvements to telecommunications devices - Google Patents

Improvements to telecommunications devices

Info

Publication number
FR1054746A
FR1054746A FR1054746DA FR1054746A FR 1054746 A FR1054746 A FR 1054746A FR 1054746D A FR1054746D A FR 1054746DA FR 1054746 A FR1054746 A FR 1054746A
Authority
FR
France
Prior art keywords
telecommunications devices
telecommunications
devices
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
Other languages
French (fr)
Inventor
Pierre Messy
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
Application granted granted Critical
Publication of FR1054746A publication Critical patent/FR1054746A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/26—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is obtained by projection of the entire image, i.e. whole-frame projection
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
FR1054746D 1952-04-21 1952-04-21 Improvements to telecommunications devices Expired FR1054746A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1054746T 1952-04-21

Publications (1)

Publication Number Publication Date
FR1054746A true FR1054746A (en) 1954-02-12

Family

ID=9596576

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1054746D Expired FR1054746A (en) 1952-04-21 1952-04-21 Improvements to telecommunications devices

Country Status (1)

Country Link
FR (1) FR1054746A (en)

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