An apparatus for controlling aging, cathode ray tube aging including a microcontroller
generating brightness level data for aging of the cathode to a video input signal;
a video preamplifier connected to the microcontroller receiving the brightness
level data by the video input signal and mixing a host video signal to generate
a video output signal wherein the brightness level of the video output signal being
controlled by the microcontroller; a cutoff control coupled to the video preamplifier
receiving brightness data of the video output signal and setting a proper brightness
level of a cathode; and a voltage control not coupled to the microcontroller preset
for a an initial brightness level of the cathode during aging.
