Elo TouchSystems MonitorMouse FOR WINDOWS NT Version 2.0 Guide de l'utilisateur télécharger pdf (Page 45)

A-40 Elo Entuitive Touchmonitor User Guide

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 1024 pixels horizontally by 768 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 correspondence 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 TouchSystems MonitorMouse FOR WINDOWS NT Version 2.0 Guide de l'utilisateur Page 45