Measurement-free G2 calibration of color picture tubes
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United States of America Patent
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Aug 13, 2002
Grant Date -
N/A
app pub date -
Apr 5, 2000
filing date -
Apr 13, 1999
priority date (Note) -
Expired
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Abstract
A method for calibrating a screen grid voltage of the color picture tube in a color television set having automatic cut-off regulation. The method comprises the steps of, changing a normal operating potential at control electrodes of the color picture tube; adjusting the screen grid voltage about a value until values causing a fly-back line to be alternately visible and extinguished converge on the value; and, resetting the normal operating potential at the control electrodes of the color picture tube.
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