Apparatus and method for displaying an image on a display screen
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United States of America Patent
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N/A
Issued Date -
Feb 20, 2003
app pub date -
Jun 21, 2002
filing date -
Jun 21, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a method for displaying a television picture or monitor picture on a display screen. In order to achieve a largely line-free display while degrading the vertical contrast of the picture as little as possible, an approach is proposed in which a vertical contrast value is determined from a video input signal (Y), the vertical contrast value is compared with a limiting value (a, b), and a vertical widening of a light spot region of the lines covered by the scanning beam is set as a function of this comparison, preferably by a vertical sweep of the scanning beam. If the vertical contrast value is below the limiting value (a, b), a smaller vertical widening of the light spot region is set than if the vertical contrast value is above the limiting value (a, b).
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