GB423765A - Improvements in or relating to television systems - Google Patents

Improvements in or relating to television systems

Info

Publication number
GB423765A
GB423765A GB3935/34A GB393534A GB423765A GB 423765 A GB423765 A GB 423765A GB 3935/34 A GB3935/34 A GB 3935/34A GB 393534 A GB393534 A GB 393534A GB 423765 A GB423765 A GB 423765A
Authority
GB
United Kingdom
Prior art keywords
signals
feb
zero
relating
modulated
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
GB3935/34A
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 GB423765A publication Critical patent/GB423765A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/04Synchronising
    • H04N5/06Generation of synchronising signals
    • H04N5/067Arrangements or circuits at the transmitter end
    • H04N5/0675Arrangements or circuits at the transmitter end for mixing the synchronising signals with the picture signal or mutually

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)

Abstract

423,765. Television. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Feb. 6, 1934, No. 3935. Convention date, Feb. 6, 1933. Addition to 413,561. [Classes 40 (iii) and 40 (v)] A high - frequency carrier is modulated symmetrically about a mean value M by a sub-carrier modulated by picture signals, and synchronizing signals T2, which alternate with periods T1 of picture transmission, reduce the transmitted current to zero O. The synchronizing apparatus at the receiver is actuated only when the uni-directional current from the detected high-frequency signals is zero.
GB3935/34A 1933-02-06 1934-02-06 Improvements in or relating to television systems Expired GB423765A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE423765X 1933-02-06

Publications (1)

Publication Number Publication Date
GB423765A true GB423765A (en) 1935-02-07

Family

ID=6472349

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3935/34A Expired GB423765A (en) 1933-02-06 1934-02-06 Improvements in or relating to television systems

Country Status (1)

Country Link
GB (1) GB423765A (en)

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