Monitoring device

Details Monitoring device Monitoring device

1992-12-09

1996-01-16

Pascal, Robert J.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Pulse storing

315 85, 315370, G09G 104

Patent

active

054850568

ABSTRACT:
In a monitoring device which forms a display image by using a cathode ray tube, leakage of electric field from the front side of the cathode ray tube is diminished with a simple construction. A leakage electric field compensation electrode is disposed to surround the display area of the front face of a cathode ray tube, a leakage electric field compensation signal, the level of which corresponds to fly-back pulse, is applied to this electrode, and the electric field compensation electrode corresponding forms a compensating electric field that cancels the leakage electric field.

REFERENCES:
patent: 4634930 (1987-01-01), Toshiyasu et al.
patent: 5017832 (1991-05-01), Takita
patent: 5151635 (1992-09-01), Cappels
patent: 5157308 (1992-10-01), Rindal
patent: 5198729 (1993-03-01), Powell
patent: 5243262 (1993-09-01), Moen
IBM Technical Disclosure Bulletin, "Cancellation of Leaked Magnetic Flux", vol. 30, No. 2, May 1988.

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