JPS57107678A - Convergence measuring method - Google Patents

Convergence measuring method

Info

Publication number
JPS57107678A
JPS57107678A JP18286480A JP18286480A JPS57107678A JP S57107678 A JPS57107678 A JP S57107678A JP 18286480 A JP18286480 A JP 18286480A JP 18286480 A JP18286480 A JP 18286480A JP S57107678 A JPS57107678 A JP S57107678A
Authority
JP
Japan
Prior art keywords
fluorescent substance
luminance
allowing
electron beam
color
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.)
Pending
Application number
JP18286480A
Other languages
Japanese (ja)
Inventor
Kazunari Hirayama
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP18286480A priority Critical patent/JPS57107678A/en
Publication of JPS57107678A publication Critical patent/JPS57107678A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H04N17/04—Diagnosis, testing or measuring for television systems or their details for receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

PURPOSE:To enable to measure shift of convergence accurately, by deflecting electron beam radiated on fluorescent layer of an in-line type color picture tube minutely longitudinally or laterally, and measuring the peak points through the use of a luminance detector. CONSTITUTION:First, a color picture tube 30 is made to non-deflection state and tri-color fluorescent substance at the center of a panel 31 is illuminated with each electron beam. A luminance detector 36 consisting of a slit plate 32 and a photo multiplier 34 is aligned on the fluorescent substance layer to be measured. Next, a deflection voltage of triangle waveform horizontally or vertically is given to a deflection yoke 37 from a minute deflector 38 and electric signals from the deflector 38 and the photo multiplier 34 are inputted to X and Y axes, allowing to obtain a luminance distribution waveform 18 as to blue color. When a luminance detector 36 is shifted by a pitch of the fluorescent substance for the similar operation, allowing to obtain green and red luminance distribution waveforms 19 and 20. Unskillful person can measure the shift of convergence accurately and simply by reading the difference among the peak points PB, PG and PR.
JP18286480A 1980-12-25 1980-12-25 Convergence measuring method Pending JPS57107678A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18286480A JPS57107678A (en) 1980-12-25 1980-12-25 Convergence measuring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18286480A JPS57107678A (en) 1980-12-25 1980-12-25 Convergence measuring method

Publications (1)

Publication Number Publication Date
JPS57107678A true JPS57107678A (en) 1982-07-05

Family

ID=16125770

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18286480A Pending JPS57107678A (en) 1980-12-25 1980-12-25 Convergence measuring method

Country Status (1)

Country Link
JP (1) JPS57107678A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4635095A (en) * 1983-03-25 1987-01-06 Videocolor Method for measuring the convergence of a three-gun shadow-mask cathode-ray tube and a device for the application of said method
EP0247627A2 (en) * 1986-05-29 1987-12-02 Hitachi, Ltd. Misconvergence amount measuring apparatus
JPH01239735A (en) * 1988-03-18 1989-09-25 Hitachi Ltd Convergence error measuring device
JPH01239734A (en) * 1988-03-18 1989-09-25 Hitachi Ltd Horizontal convergence error measuring device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4635095A (en) * 1983-03-25 1987-01-06 Videocolor Method for measuring the convergence of a three-gun shadow-mask cathode-ray tube and a device for the application of said method
EP0247627A2 (en) * 1986-05-29 1987-12-02 Hitachi, Ltd. Misconvergence amount measuring apparatus
JPH01239735A (en) * 1988-03-18 1989-09-25 Hitachi Ltd Convergence error measuring device
JPH01239734A (en) * 1988-03-18 1989-09-25 Hitachi Ltd Horizontal convergence error measuring device

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