GB1035028A - Wide band and colour cathode ray tubes and systems - Google Patents

Wide band and colour cathode ray tubes and systems

Info

Publication number
GB1035028A
GB1035028A GB1031966A GB1031966A GB1035028A GB 1035028 A GB1035028 A GB 1035028A GB 1031966 A GB1031966 A GB 1031966A GB 1031966 A GB1031966 A GB 1031966A GB 1035028 A GB1035028 A GB 1035028A
Authority
GB
United Kingdom
Prior art keywords
photo
cathode
adjusted
signal
control
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
GB1031966A
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
Publication of GB1035028A publication Critical patent/GB1035028A/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
    • H01J29/30—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines
    • H01J29/32—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines with adjacent dots or lines of different luminescent material, e.g. for colour television
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H04N9/22—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information
    • H04N9/24—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information using means, integral with, or external to, the tube, for producing signal indicating instantaneous beam position

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Color Television Systems (AREA)

Abstract

1,035,028. Colour television tubes; electron multipliers. D. M. GOODMAN. Dec. 28, 1962, No. 10319/66. Divided out of 1,035,026. Heading H1D. [Also in Division H4] In a colour television display system of the beam indexing type, a pulse of desired width and amplitude is derived from an electromagnetic indexing signal by means of a photomultiplier including photo-cathode 50, dynodes 54-60, and an anode 64 carrying a phosphor element 64 of HexZnO. The phosphor element is excited by the leading edge of the detected and amplified index signal, and fused silicon light pipe 66 provides a feedback path to photo-cathode 50, so that a saturated output signal is rapidly obtained at 62, until a negative signal derived from gate 76 or from a delay line, is fed back to dynode 58 via capacitor 82 to effect cut-off. A voltage source 70 connected to first dynode 54 may be adjusted to control the threshold of operation of the photo-multiplier, while voltage source 72 may be adjusted to control the overall time delay through the dynodes, and resistor 74 may be adjusted to control the amplitude of the output signal, these controls being ganged together, if desired. The photo-multiplier output controls the application of colour video signals to the cathode-ray display tube via gates 76, 78 and delay 80, as described in Specification 1,035,026. A filter 52 is provided for detecting only one of a plurality of different types of electromagnetic indexing signals.
GB1031966A 1962-12-28 1962-12-28 Wide band and colour cathode ray tubes and systems Expired GB1035028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4887562A GB1035026A (en) 1962-12-28 1962-12-28 Wide band and color cathode ray tubes and systems

Publications (1)

Publication Number Publication Date
GB1035028A true GB1035028A (en) 1966-07-06

Family

ID=10450266

Family Applications (4)

Application Number Title Priority Date Filing Date
GB1031866A Expired GB1035027A (en) 1962-12-28 1962-12-28 Colour cathode ray tubes and systems
GB1031966A Expired GB1035028A (en) 1962-12-28 1962-12-28 Wide band and colour cathode ray tubes and systems
GB4887562A Expired GB1035026A (en) 1959-03-20 1962-12-28 Wide band and color cathode ray tubes and systems
GB1174166A Expired GB1035029A (en) 1962-12-28 1962-12-28 Wide band and colour cathode ray tubes and systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1031866A Expired GB1035027A (en) 1962-12-28 1962-12-28 Colour cathode ray tubes and systems

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB4887562A Expired GB1035026A (en) 1959-03-20 1962-12-28 Wide band and color cathode ray tubes and systems
GB1174166A Expired GB1035029A (en) 1962-12-28 1962-12-28 Wide band and colour cathode ray tubes and systems

Country Status (2)

Country Link
GB (4) GB1035027A (en)
NL (1) NL287070A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6534935B1 (en) * 1999-10-21 2003-03-18 Matsushita Electric Industrial Co., Ltd. Color CRT apparatus

Also Published As

Publication number Publication date
GB1035027A (en) 1966-07-06
GB1035029A (en) 1966-07-06
GB1035026A (en) 1966-07-06
NL287070A (en)

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