Native Resolution
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.
D–2 User Guide
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