Electric lamp and discharge devices – Cathode ray tube – Beam deflecting means
Patent
1996-08-07
1998-02-17
O'Shea, Sandra L.
Electric lamp and discharge devices
Cathode ray tube
Beam deflecting means
H01J 2970
Patent
active
057194645
ABSTRACT:
A cathode ray tube display which has improved image quality at the periphery of the screen is achieved by correcting the top-and-bottom or right-and-left trapezoid distortion of a rectangular-shaped raster with a simple and inexpensive method of mounting a magnet in a deflection yoke. A magnet is located in an area extending from a screen side opening end of a ferrite core of a deflection yoke located at the rear periphery of a cathode ray tube to the screen side end of an insulating frame. The magnet is located so that the direction of the magnetic poles substantially conforms to the direction of the tube axis. In addition, the magnet is located so that the center line of the magnet is positioned on a plane which includes the vertical axis and tube axis of the cathode ray tube for the correction of top-and-bottom trapezoid distortion and on a plane which includes the horizontal axis and tube axis of the cathode ray tube for the correction of right-and-left trapezoid distortion.
REFERENCES:
patent: 5455483 (1995-10-01), Azzi et al.
4.1.2 Distortion Correction and Focus Control, "Display Monitor for Personal Computer", Mitsubishi Denki Giho, vol. 68, No. 11, 1994.
Matsushita Electronics Corporation
O'Shea Sandra L.
Patel Vip
LandOfFree
Cathode ray tube display with little trapezoid distortion does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cathode ray tube display with little trapezoid distortion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cathode ray tube display with little trapezoid distortion will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1786617