Elo TouchSystems Car Video System 24" LCD Desktop Touchmonitor User Manual

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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 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 conver-
sion can result in artifacts in the LCD displayed image such as varying width characters.
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