METHOD AND DEVICE FOR ADJUSTING THE PHASE FOR FLAT SCREENS

摘要

The invention relates to a method and a device for adjusting the phase between the pixel timing of a graphics card and the scan timing of a flat screen, comprising an analogue interface in a flat-screen graphics-card computer system. The phase is automatically adjusted in a repeated manner. The rising edge of a video pulse of a sufficiently bright pixel is determined in the first image column next to the back-porch area. The falling edge of the video pulse is determined in a sufficiently bright pixel in the last image column next to the front-porch area. The phase is adjusted in such a way that the scanning instant lies approximately midway between the rising and falling edges of the video pulse.