Gateway E-155C Technical Reference Manual page 111

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CHAPTER 9: Troubleshooting
Important
Cable connections must be made correctly for optimal video
quality. A poor cable connection can lower video quality.
Screen resolution—By default, the convertible
notebook uses a screen resolution optimized for the LCD
screen. Many TVs cannot display this high of a resolution
and may shift, scramble, or scroll the picture. For a better
picture on a TV display, you may need to lower the Media
Center screen resolution to 800 × 600 or 640 × 480.
Help
For more information about adjusting display settings, click or
tap Start, then click or tap Help and Support. Type the keyword
changing display settings in the Search Help box, then click or tap
the arrow.
Size of display device—Small computer monitors for
standard computer applications are generally not
optimized for motion video playback. Although they
offer excellent resolutions and refresh rates, they are
designed to make static white backgrounds with black
text look readable. Some small display devices do not
make colorful motion video look its best. Generally,
video will look better on a larger display device.
Age of the TV—Newer TVs usually have more
advanced features, produce a better quality picture, and
support higher screen resolutions. The Media Center
video display will likely be better on a newer model TV.
Type of TV (interlaced or progressive scan)
Many TVs use interlaced video. Interlaced video displays
a video frame with two passes of alternating scan lines.
The TV screen first displays the video image odd lines
one at a time, sequentially from top to bottom, then it fills
in the other half of the video image with the even lines.
Because most TVs use this interlaced method to display
the picture on the screen, a standard interlaced analog TV
will most likely flicker when displaying thin lines and
small text. An interlaced video display device will
produce a lower quality display, especially when viewing
and using the Media Center functions.
Progressive scan video displays a video frame with one
pass of sequential scan lines. A progressive scan TV
displays the entire picture, drawn sequentially from top
to bottom, without the odd/even interlacing. This results
in a fuller, sharper picture and better display quality for
viewing and using the Media Center functions. The
progressive scan picture is also brighter and easier on
your eyes.