JPS5533380A - Cathode-ray tube projection type display device - Google Patents

Cathode-ray tube projection type display device

Info

Publication number
JPS5533380A
JPS5533380A JP10637378A JP10637378A JPS5533380A JP S5533380 A JPS5533380 A JP S5533380A JP 10637378 A JP10637378 A JP 10637378A JP 10637378 A JP10637378 A JP 10637378A JP S5533380 A JPS5533380 A JP S5533380A
Authority
JP
Japan
Prior art keywords
quadrants
screen
coils
correction current
adjusted
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
JP10637378A
Other languages
Japanese (ja)
Inventor
Shigeki Ikehata
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP10637378A priority Critical patent/JPS5533380A/en
Publication of JPS5533380A publication Critical patent/JPS5533380A/en
Pending legal-status Critical Current

Links

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

PURPOSE: To secure adjustment for the picture on the screen with every 1st to 4th quadrants by driving the secondary deflecting coil with the correction current which adjusted the intensity by correction current generation circuit for the 1st to 4th quadrants of the CRT.
CONSTITUTION: CRT1a∼1c project the picture frames in pile onto screen 3 via the optical system; the vertical and horizontal scannings are carried out for each CRT via main deflecting coils 4a∼4c; and coils 4a∼4c are driven by main deflecting circuits 6a∼6c. Here secondary deflecting coils 5a∼5c are provided to give correction to the horizontal scanning deflection caused by circuit 6a∼6c. Then coils 5a∼5c are driven via correction current generation circuits 9a∼9c by the correction current which adjusted the intensity independently for the 1st to 4th quadrants on the CRT screen. As a result, the picture obtained on screen 3 can be adjusted with every 1st to 4th quadrants.
COPYRIGHT: (C)1980,JPO&Japio
JP10637378A 1978-08-30 1978-08-30 Cathode-ray tube projection type display device Pending JPS5533380A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10637378A JPS5533380A (en) 1978-08-30 1978-08-30 Cathode-ray tube projection type display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10637378A JPS5533380A (en) 1978-08-30 1978-08-30 Cathode-ray tube projection type display device

Publications (1)

Publication Number Publication Date
JPS5533380A true JPS5533380A (en) 1980-03-08

Family

ID=14431909

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10637378A Pending JPS5533380A (en) 1978-08-30 1978-08-30 Cathode-ray tube projection type display device

Country Status (1)

Country Link
JP (1) JPS5533380A (en)

Similar Documents

Publication Publication Date Title
ES437051A1 (en) Display system with simplified convergence
ES478053A1 (en) Display tube for displaying color pictures
GB1498909A (en) Purity adjustment for colour display system
JPS56147350A (en) Correction method and performing device of astigmatism
JPS5570189A (en) Beam index type color television picture receiver
JPS5533380A (en) Cathode-ray tube projection type display device
JPS53148230A (en) Inline-type color picture tube device
JPS547236A (en) High-resolution cathode-ray tube
JPS6053420B2 (en) Color - CRT color purity detection device
JPS5665579A (en) Image sensor
JPS51121219A (en) A television image receiver
JPS54138335A (en) Deflection nuit
JPS57148863A (en) Deflection yoke for projection type television
JPS5488725A (en) Color television receiver
JPS53118921A (en) Color receiving unit
MY129984A (en) Color kinescope
JPS5525234A (en) Picture display device
JPS5617585A (en) Pickup device for display picture
JPS537126A (en) Projection-type tv set
JPS5236421A (en) Picture quality compensator
FR2435875A1 (en) Colour picture projection system - has three CRTs, one for each primary colour, with focussing lens before each phosphor screen
JPS54929A (en) Deflector for in-line type color cathode ray tube
JPS5456723A (en) Color television picture receiver
SG124493G (en) Geometry distortion correction circuit
JPS54106118A (en) Image display device