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D Native Resolution
The native resolution of a monitor is the resolution level at which the LCD panel is designed to perform
best. The native resolution is 1024 x 768 for the 15 inch size. In almost all cases, screen images look
best when viewed at their native resolution. You can lower the resolution setting of a monitor but not
increase it.
Input Video 15” LCD
640 x 480 (VGA\S) Transforms input format to 1024 x 768
800 x 600 (SVGA) Transforms input format to 1024 x 768
1024 x 768 (XGA) Displays in Native Resolution
The native resolution of an LCD is the actual number of pixels horizontally in the LCD by the number of
pixels vertically in the LCD. LCD resolution is usually represented by the following symbols:
VGA 640 x 480
SVGA 800 x 600
XGA 1024 x 768
SXGA 1280 x 1024
UXGA 1600 x 1200
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 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.
32 Appendix D Native Resolution ENWW