All offer 16.7 million colors and 800 x 600 resolution, along with 24-bit processing for realistic image rendering. A proprietary digital video controller assures support for all three international video standards. With so many similar looking products on the market, it may be difficult to distinguish one LCD panel from another. Often, the differences lie not so much in their basic capabilities but in extra features such as audio support and remote mouse control. Along those lines, one highlight of Chisholm's Rainbow LCD panels is a plug-in electronic writing tablet.
Presenters use a wireless pen to add notes, icons or audience comments to the projected image.
Plus, the firm optically coats both the top and bottom protective glass of the panel to virtually eliminate reflection. Other companies offer LCD panels expressly designed for certain academic disciplines. Boxlight Corp.'s ProColor 1301 offers 640 x 480 resolution and a patented light shield that blocks unwanted light from overhead projectors. Onscreen help and menus guide one through set-up and operation. For a limited time, the firm will include GyroPoint, a handheld pointing device, free with the ProColor 1800.