Dual Displays, Simultaneous display of different images

.... duration of the presentation. The user may set any of the Armada portable products in

... simultaneous display mode by pressing Fn-F4 once, and in Projector only mode by pressing Fn-F4

........ twice.

.. ARMADA PORTABLE COMPUTERS : DISPLAY M ODES

....... S IM ULTANEOUS DISPLAY

..... The Armada graphics architecture has been developed to greatly improve the simultaneous display

... capability of notebook computers, thereby enhancing their utility to end users.

.... Traditional simultaneous display or “Simulscan” (found in all Armada notebook computers)

... display allows the display of the same image on a notebook PC’s LCD screen and an external CRT

... or Projection unit, with the same refresh rate and resolution being applied to each display. This

... technology, when applied to today’s larger resolution 800x600 (SVGA) and 1024x768 (XGA)

... panels, has enhanced the quality of images being displayed during presentations.

..... Prior to the introduction of the Compaq Microportable Projectors, many users were unable to

... simultaneously display the presentation material to both the internal LCD and the alternative

... projection systems. This was due to the fact that older projection systems were capable of only

... decoding a fixed resolution, which was incompatible to the one on the notebook. In these cases,

... the user was forced to disable the internal LCD.

.... With the current series of Compaq Microportable projectors even older products that only display

... 640*480 (VGA) LCD resolutions are now capable of simultaneous display to the portables’

... internal LCD, and to the projection unit.

....... DUAL DISPLAYS

..... The DualDisplay architecture opens new functionality for notebook computers. The DualDisplay

... architecture provides the ability to control the LCD and an external CRT or Projection unit with

... independent timing parameters (resolution and/or refresh rate).

.... By providing separate timing and refresh rates, the DualDisplay capability enables users to display

... simultaneous images on the internal LCD screen and external display device with different timing.

... Dual display features have been developed to greatly improve the simultaneous display capability

... of the notebook, thereby enhancing their utility to the user.

..... Microsoft Windows 98 further enhances this feature by allowing the display of two completely

... different images (desktop areas) at the same time. This allows the user to effectively double the

... size of its working desktop area. The OS enhancements allow the movement of any windows

... application from one screen to the other, just as one would do it within the confines of a single

... screen desktop area.

..... On the referenced Armada systems with Windows 98 installed, there is the possibility to create an

... expanded desktop that simultaneously displays on the internal LCD and an external display device.

... One of the display devices is considered the primary display, and is where the Start “button” and

... system tray bar appear. The other one is the secondary display, used to launch and view any

... applications not being used on the primary display.

.... The two display devices can create a “side-by-side” or “top-to-bottom” configurations. Each

... display can be set to a desired resolution and refresh rate. The different image mode allows the

... user to actually drag any window from one display device to the other.

.......

Doc Number 20AT1020