Patent ID: 6570625
Filing Date: 2003-05-27
Classification: G09G

Abstract:
A display apparatus comprising:a CRT having an anode; a driving voltage source driving the CRT in response to either a interlace video signal or a non-interlace video signal; an anode bias voltage device having a switch that biases the anode with a first anode voltage or a second anode voltage, the anode bias voltage device being responsive to an anode control signal to select the first anode voltage or the second anode voltage, the anode control signal being issued in response to whether the interlace video signal or the non-interlace video signal is provided to the CRT; and a cut-off voltage bias device having a cut-off switch that biases the driving voltage source with a first cut-off voltage or a second cut-off voltage, the cut-off voltage device being responsive to a cut-off control signal to select the first cut-off voltage or the second cut-off voltage, the cut-off control signal being issued in response to whether the interlace video signal or the non-interlace video signal is provided to the CRT.