DualHead - Introduction
Another one of the G400's more advanced features is called the "DualHead Display" Technology. This basically allows you to have a number of different display output options, such as CRT monitors, analog flat panels, and NTSC/PAL TVs. Digital flat panel compatibility requires an additional piece of hardware.
This feature of DualHead Display allows you to select any region of any size on your Windows desktop and have it zoomed with or without high quality filtering, so that it appears full-screen on your secondary output. Design professionals will benefit from this feature in applications such as Adobe Photoshop, where pixels can be zoomed to the second display for retouching.
Follow The Mouse Pointer: Use this feature if you want to pan through the zoomed area in your secondary display.
Smooth Zoomed Area: Use this feature if you want digital filtering applied to the zoomed area appearing on your secondary display. Filtering gives a smoother appearance and is good for general usage, while a non-filtered zoom is more appropriate for image editing.
DualHead DVD Max
The DualHead DVD Max mode lets you
display compatible video streams and DVD titles full-screen on TV at full
frame rate, without losing the Windows desktop on your primary monitor.
For the first time ever, you can watch a video stream on your TV and still
make use of your desktop for light work. While other software DVD
solutions claim low CPU
However, Matrox offers you the ability to use the remaining bandwidth for applications such as word processing. It is worth noting that the extent of your desktop functionality depends on your CPU and the application you are using. Opening certain applications and accessing the hard drive may interrupt DVD playback. Bandwidth-intensive applications, such as image editing, graphic design and other similar programs should be avoided when outputting DVD to TV.
The "DualHead" technology will no doubt be a useful addition to many business types and a few home users. It became most useful to me as a device to do drawing with via the zoom feature. But the main holding back is the fact that not many of us can afford to go out and purchase two monitors.
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