Display monitor image size regulation

Details Display monitor image size regulation Display monitor image size regulation

1990-11-30

1993-06-01

Weldon, Ulysses

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340731, 358243, G07G 106

Patent

active

052164128

ABSTRACT:
A display monitor includes a conventional CRT and associated display drive circuitry together with conventional horizontal and vertical deflection systems. A high voltage system is operated in response to the horizontal deflection system to produce a CRT accelerating potential. A display size control responds to changes of high voltage system current to produce an error signal which is used to produce compensating amplitude changes of vertical and horizontal deflection currents in order to maintain substantially constant image size.

REFERENCES:
patent: 4574224 (1986-03-01), Nowaczyk
patent: 4788618 (1988-11-01), Kimura
patent: 4801852 (1989-01-01), Kashiwagi
patent: 4812719 (1989-03-01), Stephens et al.

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