Elo Touch Solution 1739L 17" Open-Frame Uživatelská příručka stáhnout pdf (Strana 24)

As an example, a SXGA resolution LCD panel has 1280 pixels horizontally by 1024 pixels vertically.

Input video is also represented by the same terms. SXGA 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 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.

A-26 User Guide

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Elo Touch Solution 1739L 17" Open-Frame Uživatelská příručka Strana 24