Elo TouchSystems 1725L - Manual (Page 30)

A-26 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 resolution than the native resolution of the
LCD, the direct correspondence between the video pixels and the LCD pixels is lost. The LCD control-
ler 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.