GB580887A - Improvements in or relating to television transmitting apparatus employing cathode ray tubes - Google Patents

Improvements in or relating to television transmitting apparatus employing cathode ray tubes

Info

Publication number
GB580887A
GB580887A GB4889/44A GB488944A GB580887A GB 580887 A GB580887 A GB 580887A GB 4889/44 A GB4889/44 A GB 4889/44A GB 488944 A GB488944 A GB 488944A GB 580887 A GB580887 A GB 580887A
Authority
GB
United Kingdom
Prior art keywords
screen
signals
tube
cathode
scanning
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
GB4889/44A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB22773/44A priority Critical patent/GB584997A/en
Priority to GB4889/44A priority patent/GB580887A/en
Publication of GB580887A publication Critical patent/GB580887A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/40—Circuit details for pick-up tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Details Of Television Scanning (AREA)

Abstract

580,887. Television; cathode ray tubes. LUBSZYNSKI, H. G. March 16, 1944, No. 4889. [Classes 39 (i) and 40 (iii)] In cathode-ray apparatus employing a tube including a screen which emits electrons when scanned by a cathode-ray beam and an electrode which can be pulsed to collect electrons released from the screen when the electron beam is not operating to develop signals, the signals derived from scanning the screen are applied to a further screen which is subsequently scanned at a slower rate to re-develop the signals for transmission so that the pulses can be applied to the electrode for a large proportion of the scanning time of the further screen to increase the sensitivity of the tube. As shown the invention is applied to a television transmitting arrangement in which the image projected on the screen 2 of the tube 1 is scanned and the signals are applied from resistance 13 and amplifier 18 to a further screen 20 in a tube 19 which is subsequently scanned at a slower rate to produce signals for transmission. The signals derived from the rapid scanning of the screen 2 may be applied to the screen 20 scanned by an unmodulated beam or the scanning beam of the tube 19 may be modulated at its cathode 21. The screen 20 may be double-sided and separate scanning beams employed for applying the signals derived from the first screen and for re-developing the signals. The pulses are applied from a source 17 to the electrode 5 and in the second tube pulses may be applied to the electrode 24 during the period the signals, derived from the tube 1, are applied to the screen 20. The screen 2 may be photo-sensitive or of the type which carries an electron image of the subject for transmission. The Provisional Specification also describes an arrangement for reducing " tilt " by utilizing different scanning sequences for the two cathode-ray tubes, for example left to right in one case and right to left in the other case.
GB4889/44A 1944-03-16 1944-03-16 Improvements in or relating to television transmitting apparatus employing cathode ray tubes Expired GB580887A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB22773/44A GB584997A (en) 1944-03-16 1944-03-16 Improvements in or relating to television transmitting apparatus employing cathode ray tubes
GB4889/44A GB580887A (en) 1944-03-16 1944-03-16 Improvements in or relating to television transmitting apparatus employing cathode ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4889/44A GB580887A (en) 1944-03-16 1944-03-16 Improvements in or relating to television transmitting apparatus employing cathode ray tubes

Publications (1)

Publication Number Publication Date
GB580887A true GB580887A (en) 1946-09-24

Family

ID=9785763

Family Applications (2)

Application Number Title Priority Date Filing Date
GB4889/44A Expired GB580887A (en) 1944-03-16 1944-03-16 Improvements in or relating to television transmitting apparatus employing cathode ray tubes
GB22773/44A Expired GB584997A (en) 1944-03-16 1944-03-16 Improvements in or relating to television transmitting apparatus employing cathode ray tubes

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB22773/44A Expired GB584997A (en) 1944-03-16 1944-03-16 Improvements in or relating to television transmitting apparatus employing cathode ray tubes

Country Status (1)

Country Link
GB (2) GB580887A (en)

Also Published As

Publication number Publication date
GB584997A (en) 1947-01-28

Similar Documents

Publication Publication Date Title
US2437173A (en) Device for discriminating between fixed and moving objects
GB530776A (en) Improvements in or relating to the secret transmission of television and like signals
GB1060377A (en) Cathode ray tube
GB582304A (en) Means for reproducing x-ray images
US2217168A (en) Electron discharge device
GB590468A (en) Television transmitting system
GB580887A (en) Improvements in or relating to television transmitting apparatus employing cathode ray tubes
GB546519A (en) Improvements in cathode ray tubes of the television transmitting type
US2801385A (en) Television apparatus
GB495707A (en) Improvements in or relating to focussing systems for use in electric discharge tubes
US2335983A (en) Television signal-translating system
GB609160A (en) Improvements relating to cathode ray tubes
GB498867A (en) Improvements in or relating to the generation of signals in television or like systems
GB399192A (en) Television reception arrangement with braun tube
GB490845A (en) Improvements in or relating to television transmitting systems
GB555213A (en) Television transmitting system
GB677983A (en) Improvements relating to cathode ray tube apparatus
GB529410A (en) Improvements in or relating to television transmitting cathode ray tubes
GB501535A (en) Improvements in or relating to television and like systems
GB704676A (en) Television transmitting apparatus
GB481549A (en) Cathode ray discharge devices
GB597532A (en) Improvements in or relating to electron discharge devices, such as television transmitting tubes
GB635712A (en) Improvements in or relating to television and like pick-up or camera cathode ray tubes
GB525791A (en) Improvements in or relating to television and like systems and apparatus therefor
GB708434A (en) Improvements in or relating to electron microscopes