Elo Touch Solution 1928L Guide de l'utilisateur télécharger pdf (Page 36)

As an example, a SVGA resolution LCD panel has 800 pixels horizontally by 600 pixels

vertically. Input video is also represented by the same terms. XGA input video has a format

of 1280 pixels horizontally by 1024 pixels vertically. When the input pixels contained in

the video input format match the native resolution of the panel, there is a one to one corre-

spondence of mapping of input video pixels to LCD pixels. As an example, the pixel in

column 45 and row 26 of the input video is in column 45 and row 26 of the LCD. For the

case when the input video is at a lower or higher resolution than the native resolution of the

LCD, the direct correspondence between the video pixels and the LCD pixels is lost. The

LCD controller can compute the correspondence between video pixels and LCD pixels

using algorithms contained on its controller. The accuracy of the algorithms determines the

fidelity of conversion of video pixels to LCD pixels. Poor fidelity conversion can result in

artifacts in the LCD displayed image such as varying width characters.

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Elo Touch Solution 1928L Guide de l'utilisateur Page 36