FR797121A - Improvements to telegraphic transmission devices with printing - Google Patents

Improvements to telegraphic transmission devices with printing

Info

Publication number
FR797121A
FR797121A FR797121DA FR797121A FR 797121 A FR797121 A FR 797121A FR 797121D A FR797121D A FR 797121DA FR 797121 A FR797121 A FR 797121A
Authority
FR
France
Prior art keywords
printing
transmission devices
telegraphic transmission
telegraphic
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)
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 Business Machines Corp
Original Assignee
International Business Machines 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 Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of FR797121A publication Critical patent/FR797121A/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
    • 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

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Facsimiles In General (AREA)
  • Relay Circuits (AREA)
FR797121D 1934-07-26 1935-07-24 Improvements to telegraphic transmission devices with printing Expired FR797121A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US737013A US2113611A (en) 1934-07-26 1934-07-26 Communication system

Publications (1)

Publication Number Publication Date
FR797121A true FR797121A (en) 1936-04-21

Family

ID=24962253

Family Applications (1)

Application Number Title Priority Date Filing Date
FR797121D Expired FR797121A (en) 1934-07-26 1935-07-24 Improvements to telegraphic transmission devices with printing

Country Status (4)

Country Link
US (1) US2113611A (en)
DE (1) DE655203C (en)
FR (1) FR797121A (en)
GB (1) GB456383A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502440A (en) * 1947-01-21 1950-04-04 Int Standard Electric Corp Variable impulse transmitter
US3790708A (en) * 1972-10-12 1974-02-05 Telectrotype Corp America Communication method and apparatus

Also Published As

Publication number Publication date
DE655203C (en) 1938-01-17
GB456383A (en) 1936-11-09
US2113611A (en) 1938-04-12

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