GB677983A - Improvements relating to cathode ray tube apparatus - Google Patents

Improvements relating to cathode ray tube apparatus

Info

Publication number
GB677983A
GB677983A GB10680/47A GB1068047A GB677983A GB 677983 A GB677983 A GB 677983A GB 10680/47 A GB10680/47 A GB 10680/47A GB 1068047 A GB1068047 A GB 1068047A GB 677983 A GB677983 A GB 677983A
Authority
GB
United Kingdom
Prior art keywords
cathode
ray tube
signals
display
tube
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
GB10680/47A
Inventor
James Dwyer Mcgee
Hans Gerhard Lubszynski
Reginald Sidney Webley
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.)
Electrical and Musical Industries Ltd
Original Assignee
Electrical and Musical Industries 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
Application filed by Electrical and Musical Industries Ltd filed Critical Electrical and Musical Industries Ltd
Priority to GB10680/47A priority Critical patent/GB677983A/en
Priority to US21124A priority patent/US2820921A/en
Priority to GB8458/49A priority patent/GB678372A/en
Publication of GB677983A publication Critical patent/GB677983A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/04—Display arrangements
    • G01S7/06—Cathode-ray tube displays or other two dimensional or three-dimensional displays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/2806—Employing storage or delay devices which preserve the pulse form of the echo signal, e.g. for comparing and combining echoes received during different periods
    • 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
    • H01J29/021—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof arrangements for eliminating interferences in the tube
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/58—Tubes for storage of image or information pattern or for conversion of definition of television or like images, i.e. having electrical input and electrical output
    • H01J31/60—Tubes for storage of image or information pattern or for conversion of definition of television or like images, i.e. having electrical input and electrical output having means for deflecting, either selectively or sequentially, an electron ray on to separate surface elements of the screen
    • H01J31/62—Tubes for storage of image or information pattern or for conversion of definition of television or like images, i.e. having electrical input and electrical output having means for deflecting, either selectively or sequentially, an electron ray on to separate surface elements of the screen with separate reading and writing rays
    • H01J31/64—Tubes for storage of image or information pattern or for conversion of definition of television or like images, i.e. having electrical input and electrical output having means for deflecting, either selectively or sequentially, an electron ray on to separate surface elements of the screen with separate reading and writing rays on opposite sides of screen, e.g. for conversion of definition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0105—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level using a storage device with different write and read speed
    • H04N7/0107—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level using a storage device with different write and read speed using beam gun storage

Abstract

677,983. Cathode-ray tubes. ELECTRIC & MUSICAL INDUSTRIES, Ltd. March 25, 1948 [April 22, 1947], No. 10680/47. Class 39 (i). [Also in Groups XL (b) and XL (c)] Cathode-ray tube apparatus, of the type adapted to display electrical signals on the screen of a cathode-ray tube wherein the screen has a decay time which is so short in relation to the desired display time as to cause objectionable variations in brightness, comprises means for storing the electrical signals in a storage device and means for scanning the storage device a plurality of times to obtain derived signals which are in effect a plurality of repetitions of the signals, and means for reproducing the derived signals on the screen of the cathoderay tube. In Fig. 1 radar signals for a P.P.I. display are fed from an aerial 7 to an electron gun 4 and used to produce a positive charge image on the mosaic screen 2; this is discharged by slow electrons from the gun 5 and the output fed through an amplifier 15 to the display cathode-ray tube 16, part of the output from the amplifier being fed back to the gun 4 to renew the charge-image, the aerial 7 being disconnected. In another embodiment, Fig. 2, the display on the screen of cathode-ray tube 25 is focused on to the photo-cathode 21 of tube 18; the photo-electrons charge the mosaic 20 positively by secondary emissions. Electrons from the gun 19 scan the charge image and produce signals in the grid 22, but are unable to reduce the charge since the grid 22 is maintained at a potential above the first secondary emission cross-over point; thus the mosaic may be repeatedly scanned to produce output signals which are fed to the display cathode-ray tube 29. The tube 25 may be formed as an integral part of the tube 18. Two, three, or more storage tubes of the type shown in either Fig. 1 or Fig. 2 may be used with a single display cathode-ray tube.
GB10680/47A 1947-04-22 1947-04-22 Improvements relating to cathode ray tube apparatus Expired GB677983A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB10680/47A GB677983A (en) 1947-04-22 1947-04-22 Improvements relating to cathode ray tube apparatus
US21124A US2820921A (en) 1947-04-22 1948-04-15 Cathode ray tube apparatus
GB8458/49A GB678372A (en) 1947-04-22 1949-03-29 Improvements in or relating to cathode ray tube apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB10680/47A GB677983A (en) 1947-04-22 1947-04-22 Improvements relating to cathode ray tube apparatus

Publications (1)

Publication Number Publication Date
GB677983A true GB677983A (en) 1952-08-27

Family

ID=9972289

Family Applications (2)

Application Number Title Priority Date Filing Date
GB10680/47A Expired GB677983A (en) 1947-04-22 1947-04-22 Improvements relating to cathode ray tube apparatus
GB8458/49A Expired GB678372A (en) 1947-04-22 1949-03-29 Improvements in or relating to cathode ray tube apparatus

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB8458/49A Expired GB678372A (en) 1947-04-22 1949-03-29 Improvements in or relating to cathode ray tube apparatus

Country Status (2)

Country Link
US (1) US2820921A (en)
GB (2) GB677983A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531761A (en) * 1982-05-13 1985-07-30 Dr. Ing. H.C.F. Porsche Aktiengesellschaft Apparatus for vibration isolation attachment of subframe or aggregate holder

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL233650A (en) * 1957-11-27
US3113311A (en) * 1960-06-29 1963-12-03 Lloyd V Searle Radar integrating system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2213174A (en) * 1938-07-30 1940-08-27 Rca Corp Television transmitting tube
US2213178A (en) * 1939-06-29 1940-08-27 Rca Corp Television transmitting tube and system
US2412669A (en) * 1942-06-19 1946-12-17 Rca Corp Pulse-echo position indicator
US2429809A (en) * 1942-09-17 1947-10-28 Gen Electric Radio locating equipment
GB582304A (en) * 1943-08-13 1946-11-12 Baden John Edwards Means for reproducing x-ray images
US2549072A (en) * 1946-02-27 1951-04-17 Rca Corp Recording apparatus for radar systems
US2602921A (en) * 1946-10-12 1952-07-08 Sperry Corp Aircraft traffic control system
US2667635A (en) * 1947-09-20 1954-01-26 Raytheon Mfg Co Moving target indicator radar system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531761A (en) * 1982-05-13 1985-07-30 Dr. Ing. H.C.F. Porsche Aktiengesellschaft Apparatus for vibration isolation attachment of subframe or aggregate holder

Also Published As

Publication number Publication date
US2820921A (en) 1958-01-21
GB678372A (en) 1952-09-03

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