FR812431A - Improvements to communication systems - Google Patents

Improvements to communication systems

Info

Publication number
FR812431A
FR812431A FR812431DA FR812431A FR 812431 A FR812431 A FR 812431A FR 812431D A FR812431D A FR 812431DA FR 812431 A FR812431 A FR 812431A
Authority
FR
France
Prior art keywords
communication systems
systems
communication
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 FR812431A publication Critical patent/FR812431A/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
    • H04L25/42—Transmitting circuits; Receiving circuits using mechanical distributors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Transmitters (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Electrotherapy Devices (AREA)
FR812431D 1935-02-09 1936-09-19 Improvements to communication systems Expired FR812431A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5768A US2079440A (en) 1935-02-09 1935-02-09 Communication system

Publications (1)

Publication Number Publication Date
FR812431A true FR812431A (en) 1937-05-10

Family

ID=10219603

Family Applications (1)

Application Number Title Priority Date Filing Date
FR812431D Expired FR812431A (en) 1935-02-09 1936-09-19 Improvements to communication systems

Country Status (4)

Country Link
US (1) US2079440A (en)
DE (1) DE700868C (en)
FR (1) FR812431A (en)
GB (1) GB478447A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434681A (en) * 1943-02-13 1948-01-20 Bell Telephone Labor Inc Remotely controlled electrical calculator

Also Published As

Publication number Publication date
US2079440A (en) 1937-05-04
DE700868C (en) 1941-01-02
GB478447A (en) 1938-01-19

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