Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1993-12-29
1995-06-27
Blum, Theodore M.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
315370, 348813, H01J 2974, H01J 2976
Patent
active
054282691
ABSTRACT:
A time-varying control signal is developed by a current sensor connecting the imaging screen and a closely proximate screen grid of a cathode ray tube as an imaging electron beam is operatively swept across the screen to produce images thereon. The control signal is processed and then applied to at least one of the tube operating elements--such as the horizontal and vertical deflection coils, the focusing lens, the electron beam generator and, in a plural beam tube, the convergence assembly--which controls a characteristic affecting the quality of an image. Specific arrangements for using the time-varying control signal to compensate for geometric image distortions affecting horizontal linearity and to increase the imaging resolution of the tube are disclosed.
REFERENCES:
patent: 4352047 (1982-09-01), Imayasu et al.
patent: 4369396 (1986-01-01), Judd
patent: 4635107 (1987-01-01), Turner
Blum Theodore M.
Innovative Soslutions and Support, Incorporated
LandOfFree
Methods and apparatus for improving cathode ray tube image quali does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods and apparatus for improving cathode ray tube image quali, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for improving cathode ray tube image quali will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-289522