HP MP1800 White Paper
Octoberr 20 2000
Compaq Computer
Corporation
CONTENTS
Introduction ....................1
Recommendations...........3
Common Problems .......... 3
Optimizing the
Projected Image .............. 4
Utilities for Armada
Products.......................... 4
Simultaneous
Display............................ 5
Dual Display.................... 5
Example User
Scenarios ........................ 6
TV/Video Support............ 7
HDTV Support..................7
Armada lineup................. 8
Resolutions and
Refresh Rates .................. 8
WHITE PAPER
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Compaq Microportable Projectors & the
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Armada Graphics/Video Capabilities
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INTRODUCTION
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This whitepaper explains how to optimize the customers’ experience with Compaq
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Portable Computers when used in conjunction with a Compaq Microportable Projector.
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The Compaq series of Microportable Projectors are a 3-4.5 lb. multi-sync projectors
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capable of displaying images at resolutions of 640*480 to 1280*1024. The native display
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mode is 1024*768 (XGA) for the high end model and 800*600 (SVGA) for the value line,
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and it automatically scales up or down other resolutions using state-of-the-art algorithms
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built into the hardware.
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The graphics acceleration technology and architecture of the Armada Family of Portable
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Computers delivers brilliant, professional quality, photo realistic images while
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maintaining outstanding performance. Its strength in 2D image display, 3D rendering,
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DVD playback and higher bus and memory speeds and bandwidth make this the best
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overall solution for the graphics and video needs of Compaq’s customers.
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By providing separate timings (on the high end Armada M700/E700/7400/7800 systems)
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for an external (CRT or projector unit) and an internal (LCD) display device, the dual
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display technology enables users to display the same image simultaneously on separate
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displays with different refresh rates and /or resolutions. Additionally, with the support of
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the Windows98 Operating System, the dual display technology also enables users to
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display different images simultaneously on separate displays at different refresh rates, if
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needed.
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In conjunction, the Microportable Projectors & the Armada Portable Computers provide
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the stunning graphics presentation solutions that todays’ professionals desire to make a
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lasting impression on their clients.
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1 Doc Number 20AT1020
Doc Number 20AT1020
WHITE PAPER (cont.)
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NOTICE
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The information in this publication is subject to change without notice.
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THE COMPETITIVE INFORMATION CONTAINED IN THIS PUBLICATION IS BASED ON
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DATA AVAILABLE FROM PUBLIC SOURCES AT THE TIME OF PUB L ICATION. COMPAQ
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COMPUTER CORPORATION SHALL NOT BE RESPONSIBLE FOR ANY INACCURACIES ,
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ERRORS, OR OMISSIONS IN INFORMATION CONTAINED HEREIN, INCLUDING, BUT NOT
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LIMITED TO, INFORMATION OBTAINED FROM THIRD PARTY S OURCES , SUCH AS
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PUBLICATIONS OF OTHER COMPANIES, THE PRESS, OR COMPETITIVE DATA
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ORGANIZATIONS.
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THIS PUBLICATION IS MADE AVAILABLE ON AN “AS IS” BASIS AND COMPAQ
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SPECIFICALLY DISCLAIMS ALL ASSOCIATED WARRANTIES, WHETHER EXPRESS OR
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IMPLIED. IN NO EVENT WILL COMPAQ BE LIABLE FOR DIRECT, INDIRECT, SP ECIAL,
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INCIDENTAL, OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH THE USE OF OR
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RELIANCE ON THE MATERIAL CONTAINED IN THIS PUBLICATION, EVEN IF ADVISED OF
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THE POSSIBILITY OF SUCH DAMAGES. COMPAQ RESERVES THE RIGHT TO MAKE
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IMPROVEMENTS OR CHANGES TO THIS PUBLICATION AND THE PRODUCTS AND
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SERVICES HEREIN DESCRIBED AT ANY TIME, WITHOUT NOTICE OR OBLIGATION.
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This publication does not constitute an endorsement of the product or products that were tested.
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The configuration or configurations tested or described may or may not be the only available
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solution. This test is not a determination of product quality or correctness, nor does it ensure
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compliance with any federal, state or local requirements. Compaq does not warrant products other
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than its own and then, only as strictly stated in Compaq product warranties.
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Compaq, LTE, Deskpro, Presario, ProLiant, and ProSignia are trademarks registered in the United
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States Patent and Trademark Office.
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Armada, Armada Station, LTE 5000, MultiBay, and Netelligent are trademarks of Compaq
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Computer Corporation.
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Other product names mentioned herein may be trademarks and/or registered trademarks of their
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respective companies.
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Microsoft, Windows NT are trademarks and/or registered trademarks of Microsoft Corporation.
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©2000 Compaq Computer Corporation.
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2
Doc Number 20AT1020
WHITE PAPER (cont.)
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RECOMMENDATIONS
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The Microportable projector’s native resolutions are 800*600 (SVGA) and 1024*768 (XGA)
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based on the model. Driving the projector at this resolution will provide optimal viewing
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experience, as the image is mapped, pixel-by-pixel from the computer to the internal electronics.
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Thus, the user should attempt to always drive the projectors at their native resolutions.
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When a different resolution is used, the projector will automatically scale up or scale down the
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image to fit into the internal array. That means that some interpolation of data will be necessary,
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and though the circuitry provided is state-of-the-art, it will never be as perfect a s the case where no
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pixels are modified, added or removed. If the chosen resolution is beyond the range of the
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projector, a warning message will be displayed.
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There are applications that will only run at fixed resolutions. Should it be other than SVGA or
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XGA, then the next best thing is to let the projector do the scaling. The expansion capabilities of
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many older Armada portable products are not as advanced as that of the Microportable projectors.
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COMMON PROBLEMS SETTING-UP THE PORTABLE & PROJECTOR
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When using a portable with Dual Display capability, it is possible for the user to encounter some
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display modes that are not desired.
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The image on the projector is only a partial image, and I can pan around it.
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What happened here is that the user set the external display to a smaller resolution using the
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“overhead projector” icon (or via the display settings utility) without making the desktop area
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smaller. Thus, Microsoft Windows “thinks” the user wants a full 1024*768 desktop area to present
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information, and that at the same time he only wants a smaller area to be visible on the external
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display device. This can easily be corrected by adjusting the “desktop area” to match the “CRT
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resolution”. In this case, the complete desktop area will be visible on the external display device.
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I have a complete image, but it is smaller than what I have seen before.
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What most likely happened is that the user (or application) set the system to a lower resolution
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(games do this quite a bit), and then the projector utility set to simultaneous display of this lower
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resolution. Then, the black border seen around the internal LCD is also seen on the external
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display device, making the overall visible image smaller than normal.
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There are two ways to fix this: The user can either press Fn-F4 to cycle to an external display
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viewing only (internal LCD blanks), at which the system will automatically drive the projector at
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full screen, or the user can set the external device to the smaller resolution using the “overhead
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projector” icon on the system tray. If the user is currently showing the image on the internal
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computer display, then Fn-F4 will need to be pressed twice in order to switch to the external
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display device.
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The user can also simply increase the resolution of the external display device, via the “display
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properties” tabs that Microsoft Windows provides. The level of flexibility on these adjustments
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will be determined by the graphics controller used: single or dual display.
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Video (DVD or other) is only seen on one display device.
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Although some Armada portables have a Dual Graphics Controller, they still have a single video
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processing unit. Thus, while on Dual Display mode, video can only be shown on one display
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device (selectable via the advanced settings tabs). If the user desires to view video on both display
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devices, the Armada portable must be set in simultaneous display mode, single controller
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configuration (resolution must match the internal LCD, and refresh rate must be 60Hz).
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3
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