Variable rate horizontal deflection system for a video monitor

Details Variable rate horizontal deflection system for a video monitor Variable rate horizontal deflection system for a video monitor

1983-08-17

1986-03-04

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

358243, H01J 2970, H01J 2976

Patent

active

045742243

ABSTRACT:
A CRT video display includes a horizontal oscillator for producing a variable rate horizontal scan control signal in response to different resolution modes of operation. A horizontal output signal is produced in response to the variable rate horizontal scan control signal and a B+ voltage. The pulse amplitude of the horizontal output signal is maintained constant in response to changes in the rate of the horizontal scan control signal by appropriately adjusting the B+ voltage, whereby the high voltage and horizontal raster size of the display are maintained constant despite variations in the horizontal scan control signal which accommodate different resolution modes of operation.

REFERENCES:
patent: 4074323 (1978-02-01), Griffey
patent: 4286292 (1981-08-01), Marino
patent: 4414494 (1983-11-01), Schmidt

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