GB457879A - Method for transmitting television - Google Patents

Method for transmitting television

Info

Publication number
GB457879A
GB457879A GB10533/35A GB1053335A GB457879A GB 457879 A GB457879 A GB 457879A GB 10533/35 A GB10533/35 A GB 10533/35A GB 1053335 A GB1053335 A GB 1053335A GB 457879 A GB457879 A GB 457879A
Authority
GB
United Kingdom
Prior art keywords
diode
valve
image
signals
picture
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
GB10533/35A
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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta GmbH
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 Loewe Opta GmbH filed Critical Loewe Opta GmbH
Publication of GB457879A publication Critical patent/GB457879A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/06—Generation of synchronising signals
    • H04N5/067—Arrangements or circuits at the transmitter end
    • H04N5/0675—Arrangements 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 Signal Processing For Recording (AREA)

Abstract

457,879. Television. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, Steglitz, Berlin. April 5, 1935, No. 10553. Convention date, April 6, 1934. [Class 40 (iii)] At a transmitter in which synchronizing signals and picture signals are separately amplified before mixing, the picture signal amplifier contains a limiting device so that image potentials of such sign and magnitude as are likely to interfere with the synchronizing signals are subjected to limiting. A gas-filled diode 14 is connected between the grid of the last valve 10 of the image amplifier and earth so that the diode becomes conducting when the image potential approaches the synchronizing signal level. The cut-off level may be varied by adjusting the anode potential 13 of the diode 14. To prevent the diode 14 cutting off a considerable range of the picture signals, the output of valve 10 is rectified at 17 and applied to the grid of an earlier valve 9 in the image amplifier so that variation of the potentiometer 22 varies the amplification of valve 9. The picture signals themselves therefore control the amplification so that on changing from a " thin " to a "dense" film no manual adjustment is required.
GB10533/35A 1934-04-06 1935-04-05 Method for transmitting television Expired GB457879A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE457879X 1934-04-06

Publications (1)

Publication Number Publication Date
GB457879A true GB457879A (en) 1936-12-07

Family

ID=6539360

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10533/35A Expired GB457879A (en) 1934-04-06 1935-04-05 Method for transmitting television

Country Status (1)

Country Link
GB (1) GB457879A (en)

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