GB348937A - Improvements in or relating to radio signalling systems - Google Patents

Improvements in or relating to radio signalling systems

Info

Publication number
GB348937A
GB348937A GB19388/30A GB1938830A GB348937A GB 348937 A GB348937 A GB 348937A GB 19388/30 A GB19388/30 A GB 19388/30A GB 1938830 A GB1938830 A GB 1938830A GB 348937 A GB348937 A GB 348937A
Authority
GB
United Kingdom
Prior art keywords
relating
beginning
different wavelengths
signalling systems
radio signalling
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
GB19388/30A
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
Priority claimed from DET37231D external-priority patent/DE537382C/en
Application filed by Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB348937A publication Critical patent/GB348937A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/16—Frequency regulation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/04—Arrangements for detecting or preventing errors in the information received by diversity reception using frequency diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00095—Systems or arrangements for the transmission of the picture signal
    • H04N1/00103—Systems or arrangements for the transmission of the picture signal specially adapted for radio transmission, e.g. via satellites

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Transmitters (AREA)
  • Television Systems (AREA)
  • Radio Relay Systems (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

348,937. Wireless telegraphy. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. June 25, 1930, No. 19388. Convention date, July 26, 1929. Addition to 347,956. [Class 40 (v).] The wireless telegraph system of the parent Specification, in which the beginning and end of each signal are transmitted as an impulse of different wave-length, is modified by transmitting the beginning of successive signals on different wavelengths, and the ends on other different wavelengths. The invention increases the possible speed of transmission, which is limited by the broadening of short-wave signals during transmission.
GB19388/30A 1929-07-06 1930-06-25 Improvements in or relating to radio signalling systems Expired GB348937A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DET37231D DE537382C (en) 1929-07-06 1929-07-06 Procedure to eliminate annoying broadening of characters in shortwave telegraphy
DET37324D DE542163C (en) 1929-07-06 1929-07-26 Procedure to eliminate annoying broadening of characters in shortwave telegraphy

Publications (1)

Publication Number Publication Date
GB348937A true GB348937A (en) 1931-05-21

Family

ID=26000411

Family Applications (2)

Application Number Title Priority Date Filing Date
GB19250/30A Expired GB347956A (en) 1929-07-06 1930-06-24 Improvements in or relating to radio signalling systems
GB19388/30A Expired GB348937A (en) 1929-07-06 1930-06-25 Improvements in or relating to radio signalling systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB19250/30A Expired GB347956A (en) 1929-07-06 1930-06-24 Improvements in or relating to radio signalling systems

Country Status (3)

Country Link
US (1) US1914898A (en)
DE (1) DE542163C (en)
GB (2) GB347956A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614210A (en) * 1944-05-18 1952-10-14 Rca Corp Pulsed radio signaling

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486511A (en) * 1945-10-31 1949-11-01 Rca Corp Apparatus for receiving facsimile signals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614210A (en) * 1944-05-18 1952-10-14 Rca Corp Pulsed radio signaling

Also Published As

Publication number Publication date
DE542163C (en) 1935-02-08
GB347956A (en) 1931-05-07
US1914898A (en) 1933-06-20

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