GB359812A - Improvements in or relating to multiplex telegraph systems - Google Patents

Improvements in or relating to multiplex telegraph systems

Info

Publication number
GB359812A
GB359812A GB29?/31A GB29631A GB359812A GB 359812 A GB359812 A GB 359812A GB 29631 A GB29631 A GB 29631A GB 359812 A GB359812 A GB 359812A
Authority
GB
United Kingdom
Prior art keywords
frequency
keys
modulator
spacing
producing
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
GB29?/31A
Other languages
English (en)
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB359812A publication Critical patent/GB359812A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J9/00—Multiplex systems in which each channel is represented by a different type of modulation of the carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Selective Calling Equipment (AREA)
  • Near-Field Transmission Systems (AREA)
  • Facsimiles In General (AREA)
  • Optical Communication System (AREA)
GB29?/31A 1930-01-03 1931-01-03 Improvements in or relating to multiplex telegraph systems Expired GB359812A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE540850T 1930-01-03

Publications (1)

Publication Number Publication Date
GB359812A true GB359812A (en) 1931-10-29

Family

ID=6559068

Family Applications (2)

Application Number Title Priority Date Filing Date
GB29?/31A Expired GB359812A (en) 1930-01-03 1931-01-03 Improvements in or relating to multiplex telegraph systems
GB387/31A Expired GB355164A (en) 1930-01-03 1931-01-05 Improvements in or relating to high frequency signalling systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB387/31A Expired GB355164A (en) 1930-01-03 1931-01-05 Improvements in or relating to high frequency signalling systems

Country Status (5)

Country Link
US (1) US1886263A (de)
AT (1) AT127989B (de)
DE (2) DE540850C (de)
FR (1) FR708641A (de)
GB (2) GB359812A (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2538829A (en) * 1945-04-21 1951-01-23 Rca Corp Multiplex telegraph system using frequency discrimination
US2464837A (en) * 1946-05-02 1949-03-22 Florian J Werthmann Radio teletype system
US2993958A (en) * 1956-10-17 1961-07-25 American Telephone & Telegraph Radiant energy receiving system
NL276980A (de) * 1956-11-08
FR2506544A1 (fr) * 1981-05-19 1982-11-26 Jeumont Schneider Procede de determination de l'etat d'un signal alternatif module en tout ou rien en milieu perturbe

Also Published As

Publication number Publication date
GB355164A (en) 1931-08-20
DE528682C (de) 1932-11-15
FR708641A (fr) 1931-07-27
US1886263A (en) 1932-11-01
DE540850C (de) 1934-01-05
AT127989B (de) 1932-04-25

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