GB513776A - Improvements in or relating to television receivers - Google Patents

Improvements in or relating to television receivers

Info

Publication number
GB513776A
GB513776A GB3434/38A GB343438A GB513776A GB 513776 A GB513776 A GB 513776A GB 3434/38 A GB3434/38 A GB 3434/38A GB 343438 A GB343438 A GB 343438A GB 513776 A GB513776 A GB 513776A
Authority
GB
United Kingdom
Prior art keywords
crystal
cathode ray
scanned
produce
ray beam
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
GB3434/38A
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.)
Scophony Ltd
Original Assignee
Scophony Ltd
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 to NL65290D priority Critical patent/NL65290C/xx
Priority to US22734D priority patent/USRE22734E/en
Priority to BE432507D priority patent/BE432507A/xx
Application filed by Scophony Ltd filed Critical Scophony Ltd
Priority to GB3434/38A priority patent/GB513776A/en
Priority to US253182A priority patent/US2330171A/en
Priority to FR849764D priority patent/FR849764A/en
Publication of GB513776A publication Critical patent/GB513776A/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
    • H01J29/14—Screens on or from which an image or pattern is formed, picked up, converted or stored acting by discoloration, e.g. halide screen

Abstract

513,776. Television receivers. SCOPHONY, Ltd., and ROSENTHAL, A. H. Feb. 3, 1938, No. 3434. [Classes 39 (i) and 40 (iii)] A screen of a crystalline alkali halide or like material is scanned to produce an opacity which is brought to a datum at frame frequency. A crystal 9, Fig. 1, e.g. of potassium bromide, is scanned by a modulated cathode ray beam, the electrons injected into the crystal forming an opaque deposit which moves through the crystal . at a velocity dependent upon the potentials of the electrodes 10, 11, and the temperature of the crystal. These factors are adjusted so that the opaque deposit completes its traverse in a frame period. Electrodes 10, 11 may be dispensed with, the surface charge being utilized to produce the desired field. The electrode 10 may be replaced by a secondary emitting layer, either to increase the opaque deposit or to produce a surface charge. The crystal is maintained at a constant temperature by thermostatically controlled heating coils within, or without, the crystal, Figs. 4, 5, not shown. The crystal may be mounted outside the cathode ray tube on an electrode forming the end wall, Fig. 2, not shown. The opaque deposit may be brought to a datum level by a second cathode ray beam immediately preceding the modulated cathode ray beam, Fig. 6, not shown. In a modification, the crystal is scanned by light of one wavelength, and imaged on the screen by light of another wavelength, Fig. 3, not shown. The scanning may reduce or increase the opacity of the crystal.
GB3434/38A 1938-02-03 1938-02-03 Improvements in or relating to television receivers Expired GB513776A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL65290D NL65290C (en) 1938-02-03
US22734D USRE22734E (en) 1938-02-03 Television receiving system
BE432507D BE432507A (en) 1938-02-03
GB3434/38A GB513776A (en) 1938-02-03 1938-02-03 Improvements in or relating to television receivers
US253182A US2330171A (en) 1938-02-03 1939-01-27 Television receiving system
FR849764D FR849764A (en) 1938-02-03 1939-02-02 Television receiver systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3434/38A GB513776A (en) 1938-02-03 1938-02-03 Improvements in or relating to television receivers

Publications (1)

Publication Number Publication Date
GB513776A true GB513776A (en) 1939-10-23

Family

ID=9758259

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3434/38A Expired GB513776A (en) 1938-02-03 1938-02-03 Improvements in or relating to television receivers

Country Status (5)

Country Link
US (2) US2330171A (en)
BE (1) BE432507A (en)
FR (1) FR849764A (en)
GB (1) GB513776A (en)
NL (1) NL65290C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2361056A (en) * 1986-08-20 2001-10-10 British Aerospace Optical apparatus

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB536720A (en) * 1939-06-01 1941-05-26 Scophony Ltd Improvements in or relating to television and like receiving systems
US2418779A (en) * 1942-07-22 1947-04-08 Rca Corp Alkali metal halide and luminescent screens of substantially coincident spectral absorption
DE868767C (en) * 1943-02-10 1953-02-26 Telefunken Gmbh Storing oscilloscope tube with a screen made of alkali halides
US2435435A (en) * 1943-04-06 1948-02-03 Gen Electric Cathode-ray screen
US2416574A (en) * 1943-04-08 1947-02-25 Gen Electric Discriminative alkali halide screen
US2451292A (en) * 1943-12-20 1948-10-12 Rca Corp Dark trace screen
US2422943A (en) * 1944-02-01 1947-06-24 Gen Electric Electron microscope
US2515263A (en) * 1944-02-24 1950-07-18 Raibourn Paul Communication system
US2469992A (en) * 1944-06-20 1949-05-10 Scophony Corp Of America Television cabinet with remov able screen controlling focusing system
US2447851A (en) * 1944-07-24 1948-08-24 Gen Electric Luminescent screen indicating changes in image formation
US2472988A (en) * 1944-10-28 1949-06-14 Scophony Corp Of America Apparatus for reproducing electric signals, particularly television reproducers
US2569911A (en) * 1944-12-18 1951-10-02 Electronbeam Ltd Signal storing device and proportional-control circuits therefor
US2481622A (en) * 1945-06-06 1949-09-13 Skiatron Corp Cathode-ray tube with photo-dichroic ionic crystal light modulating screen
US2508098A (en) * 1945-06-15 1950-05-16 Chilowsky Constantin Method and apparatus for improving the response of radio-sensitive salts
US2437173A (en) * 1945-07-27 1948-03-02 Du Mont Allen B Lab Inc Device for discriminating between fixed and moving objects
US2561702A (en) * 1945-12-10 1951-07-24 Harry C Kelly Method of skiatron cleanup
US2553182A (en) * 1946-11-01 1951-05-15 Cage Projects Inc Color television
FR957706A (en) * 1946-12-26 1950-02-24
US2601328A (en) * 1947-09-20 1952-06-24 Skiatron Electronies And Telev Color television
US2585551A (en) * 1948-05-01 1952-02-12 Hofstadter Robert Means for detecting ionizing radiations
US2575033A (en) * 1948-05-01 1951-11-13 Rauland Corp Image converter tube
US2533381A (en) * 1948-10-23 1950-12-12 Nat Union Radio Corp Electrooptical dark trace picture tube
US2700626A (en) * 1949-12-09 1955-01-25 Bell Telephone Labor Inc Secondary electron emissive electrodes
US2786880A (en) * 1951-06-16 1957-03-26 Bell Telephone Labor Inc Signal translating device
US2707162A (en) * 1951-10-09 1955-04-26 Julius Cato Vredenburg Inglesb Recording of electronic images
US2881353A (en) * 1952-01-09 1959-04-07 Hyman A Michlin Producing luminescent images by electroluminescence
US3017516A (en) * 1954-03-15 1962-01-16 Research Corp Method and apparatus for producing and controlling electron emission
US2901662A (en) * 1955-03-15 1959-08-25 Nozick Seymour Electronic storage device
US2983824A (en) * 1955-05-06 1961-05-09 Ibm Electro-optical point shutter
US2863084A (en) * 1955-06-27 1958-12-02 Westinghouse Electric Corp Cathode-ray device
US2942251A (en) * 1955-11-18 1960-06-21 Skiatron Elect & Tele Data display apparatus
US2969474A (en) * 1956-03-19 1961-01-24 Westinghouse Electric Corp Kinescope screen for daylight viewing
US3021754A (en) * 1956-09-26 1962-02-20 Hoffman Electronics Corp Light polarizing apparatus or the like
US2929957A (en) * 1956-12-31 1960-03-22 Bell Telephone Labor Inc Dual picture direct view storage tube
US2944155A (en) * 1957-01-30 1960-07-05 Horizons Inc Television pickup tube
FR84703E (en) * 1958-08-25 1965-07-12
US3008066A (en) * 1958-08-25 1961-11-07 Gen Electric Information storage system
US3085469A (en) * 1959-10-12 1963-04-16 Ncr Co Optical information-processing apparatus and method
US3100817A (en) * 1960-06-09 1963-08-13 Ball Brothers Res Corp Image converter and amplifier
NL256778A (en) * 1960-12-27 1964-04-10
US3218390A (en) * 1961-12-27 1965-11-16 Bramley Jenny Optical system for the utilization of coherent light
US3277241A (en) * 1963-06-03 1966-10-04 Raytheon Co Tenebrescent display tube
US3647959A (en) * 1968-06-24 1972-03-07 Robert J Schlesinger System for generating a hologram
GB8305366D0 (en) * 1983-02-25 1983-03-30 Secr Defence Cathode ray tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2361056A (en) * 1986-08-20 2001-10-10 British Aerospace Optical apparatus
GB2361056B (en) * 1986-08-20 2002-02-13 British Aerospace Optical apparatus

Also Published As

Publication number Publication date
NL65290C (en)
US2330171A (en) 1943-09-21
FR849764A (en) 1939-12-01
BE432507A (en)
USRE22734E (en) 1946-03-19

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