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GB394496A - Television method - Google Patents

Television method

Info

Publication number
GB394496A
GB394496A GB20245/32A GB2024532A GB394496A GB 394496 A GB394496 A GB 394496A GB 20245/32 A GB20245/32 A GB 20245/32A GB 2024532 A GB2024532 A GB 2024532A GB 394496 A GB394496 A GB 394496A
Authority
GB
United Kingdom
Prior art keywords
effect
july
phosphorescent
amplifier
television
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
GB20245/32A
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
Priority claimed from US611568A external-priority patent/US2131203A/en
Application filed by Individual filed Critical Individual
Publication of GB394496A publication Critical patent/GB394496A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/67—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals
    • C09K11/68—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals containing chromium, molybdenum or tungsten
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/257—Picture signal generators using flying-spot scanners

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Conversion Of X-Rays Into Visible Images (AREA)
  • Luminescent Compositions (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

394,496. Television. ARDENNE, M. VON, 19, Jungfernstieg, Lichterfelde-Ost, Berlin. July 18, 1932, No. 20245. Convention date, July 18, 1931. Addition to 387,536. [Class 40 (iii).] In a television transmitter employing a Braun tube as described in the parent Specification, in order to reduce the distortion in the image transmission, particularly when rapid variations in the signal currents occur, the signals are derived principally by virtue of the fluorescent effect rather than from the phosphorescent effect of the material composing the screen of the Braun type. For this purpose materials such as gypsum having relatively slight phosphorescence are employed, while the amplifier in the transmitter is designed so as to yield, as indicated in Fig. 3, a higher amplification factor V for the higher frequencies than for the lower frequencies f, the signals produced by the phosphorescent effect being so sluggish at the higher frequencies that they supply an input current of almost constant amplitude and are thereby eliminated on the output side. With such an amplifier the highfrequency components of the relatively weak currents arising from the fluorescent effect furnish, when amplified, an output potential approximately equal to that derived from the lower-frequency components of the relatively strong currents arising from the phosphorescent effect.
GB20245/32A 1931-03-28 1932-07-18 Television method Expired GB394496A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DER100146D DE755947C (en) 1931-03-28 1931-03-28 Television transmission arrangement with Braunschweig tube
DE388623X 1931-06-19
DE394496X 1931-07-18
US611568A US2131203A (en) 1931-03-27 1932-05-16 Television method
US666554A US2096986A (en) 1931-03-28 1933-04-17 Braun tube

Publications (1)

Publication Number Publication Date
GB394496A true GB394496A (en) 1933-06-29

Family

ID=31999608

Family Applications (3)

Application Number Title Priority Date Filing Date
GB8932/32A Expired GB387536A (en) 1931-03-28 1932-03-29 Television method
GB16135/32A Expired GB388623A (en) 1931-03-28 1932-06-08 Television method
GB20245/32A Expired GB394496A (en) 1931-03-28 1932-07-18 Television method

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB8932/32A Expired GB387536A (en) 1931-03-28 1932-03-29 Television method
GB16135/32A Expired GB388623A (en) 1931-03-28 1932-06-08 Television method

Country Status (5)

Country Link
US (1) US2096986A (en)
BE (1) BE387442A (en)
DE (1) DE755947C (en)
FR (1) FR734239A (en)
GB (3) GB387536A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486717A (en) * 1946-03-20 1949-11-01 Paramount Pictures Inc Synchronization of camera and television receiver tube

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE754628C (en) * 1934-05-20 1954-11-22 Opta Radio A G Circuit arrangement for eliminating interference in televisions coming from the network
DE753440C (en) * 1935-02-21 1954-03-22 Walter Rogowski Dr Circuit to reduce the afterglow in television cathode ray tubes
US2452522A (en) * 1941-03-18 1948-10-26 Rca Corp Luminescent screen and method of developing light
US2418779A (en) * 1942-07-22 1947-04-08 Rca Corp Alkali metal halide and luminescent screens of substantially coincident spectral absorption
US2432908A (en) * 1942-07-22 1947-12-16 Rca Corp Cathode-ray target and method of manufacture
US2418780A (en) * 1942-11-28 1947-04-08 Rca Corp Alkali halide target with contrasting colors
US2448476A (en) * 1943-12-03 1948-08-31 Rauland Corp Cathode-ray projector tube
US2455710A (en) * 1943-12-21 1948-12-07 Rauland Corp Color television system
US2615087A (en) * 1944-04-17 1952-10-21 Rines Robert Harvey Color television system
US2569911A (en) * 1944-12-18 1951-10-02 Electronbeam Ltd Signal storing device and proportional-control circuits therefor
US2461515A (en) * 1945-07-16 1949-02-15 Arthur B Bronwell Color television system
US2494883A (en) * 1945-08-02 1950-01-17 Gen Electric Cascaded fluorescent material
US2547775A (en) * 1946-01-23 1951-04-03 Rca Corp Fluorescent color screen for electron optical systems
US2446440A (en) * 1947-01-28 1948-08-03 Rca Corp Color television tube
US2580073A (en) * 1948-05-01 1951-12-25 Bell Telephone Labor Inc Time multiplex television in color
US2605434A (en) * 1949-12-08 1952-07-29 John H Homrighous Single beam three color cathoderay tube
US2554257A (en) * 1949-12-14 1951-05-22 Westinghouse Electric Corp Protection of phosphors from attack by alkali vapors
US2699520A (en) * 1950-11-02 1955-01-11 Gen Teleradio Inc Cathode-ray system
US2754444A (en) * 1951-06-16 1956-07-10 Hartford Nat Bank & Trust Co Cathode-ray tube comprising fluorescent screen
US2659679A (en) * 1951-11-23 1953-11-17 Gen Electric Phosphor coating process
US2763567A (en) * 1952-07-23 1956-09-18 Westinghouse Electric Corp Method of forming an input screen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB225553A (en) * 1923-11-28 1925-05-28 Westinghouse Electric & Mfg Co Improvements in and relating to television systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486717A (en) * 1946-03-20 1949-11-01 Paramount Pictures Inc Synchronization of camera and television receiver tube

Also Published As

Publication number Publication date
DE755947C (en) 1955-08-04
US2096986A (en) 1937-10-26
GB388623A (en) 1933-03-02
FR734239A (en) 1932-10-18
GB387536A (en) 1933-02-09
BE387442A (en) 1932-04-30

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