JPS57148475A - Equipment for inspecting tolerance of purity adjustment of color tv - Google Patents

Equipment for inspecting tolerance of purity adjustment of color tv

Info

Publication number
JPS57148475A
JPS57148475A JP3400281A JP3400281A JPS57148475A JP S57148475 A JPS57148475 A JP S57148475A JP 3400281 A JP3400281 A JP 3400281A JP 3400281 A JP3400281 A JP 3400281A JP S57148475 A JPS57148475 A JP S57148475A
Authority
JP
Japan
Prior art keywords
color
tolerance
purity
cpu18
inspected
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
JP3400281A
Other languages
Japanese (ja)
Inventor
Katsutoshi Kato
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3400281A priority Critical patent/JPS57148475A/en
Publication of JPS57148475A publication Critical patent/JPS57148475A/en
Pending legal-status Critical Current

Links

Landscapes

  • 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 inspect tolerances of purity adjustment in a short time, by measuring and storing luminances of many points on the picture of color TV CRT to be inspected within one field period of scanning.
CONSTITUTION: Vertical magnetic fields 3-a and 3-b are installed as a equalized magnetic field by mangetic field generating coils 3 and 3' which are installed above and below a color TV CRT CPT1 which has been adjusted for the purity at the same distance, respectively. Then, a raster signal generating mode of a TV signal generator 7 is selected by a command from a CPU18 issued based on the program stored in an ROM17, and control signals of red, green, and blue to be displayed are given to a chassis 2. Thereafter, a motor 27 is driven from the CPU18, and the resistance value of a variable resistor 23 is changed, and thus, the landing condition of a fluorescent screen of an electron beam is changed. In this way, the maximum value of the luminance of the CPT to be inspected is found and the tolerance of the reduced value of the luminance from the maximum value is also found.
COPYRIGHT: (C)1982,JPO&Japio
JP3400281A 1981-03-11 1981-03-11 Equipment for inspecting tolerance of purity adjustment of color tv Pending JPS57148475A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3400281A JPS57148475A (en) 1981-03-11 1981-03-11 Equipment for inspecting tolerance of purity adjustment of color tv

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3400281A JPS57148475A (en) 1981-03-11 1981-03-11 Equipment for inspecting tolerance of purity adjustment of color tv

Publications (1)

Publication Number Publication Date
JPS57148475A true JPS57148475A (en) 1982-09-13

Family

ID=12402231

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3400281A Pending JPS57148475A (en) 1981-03-11 1981-03-11 Equipment for inspecting tolerance of purity adjustment of color tv

Country Status (1)

Country Link
JP (1) JPS57148475A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU673887B2 (en) * 1993-03-04 1996-11-28 Kabushiki Kaisha Ace Denken Slot machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU673887B2 (en) * 1993-03-04 1996-11-28 Kabushiki Kaisha Ace Denken Slot machine

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