Patent ID: 7268750

Claim:
An image display apparatus control method comprising, when image display is to be started by outputting a signal from a modulation circuit to a display panel for displaying an image by irradiation with electrons from an electron source to fluorescent substances, delaying application of a predetermined acceleration potential for accelerating electrons from the electron source, wherein said image display apparatus comprises a processor unit, a D/A converter which inputs a signal from said processor unit, and a high voltage source which inputs a signal from said D/A converter and outputs the acceleration potential for accelerating electrons from the electron source, wherein said modulation circuit has a shift register holding data for outputting the signal, said processor unit outputs, to said D/A converter, a control signal for raising the potential to be outputted from said high voltage source to a predetermined potential when a predetermined time period has been elapsed after a power source was turned on, and determines the data to be stored in the shift register during the predetermined time period.