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| By
Serge Pieters |
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In the real world, there are other inputs that we need to contend with. The better the quality and resolution of the video source, the better the output. VCRs are poor, while DVD - or satellite and other digital sources - are much better. A VCR's resolution, compared to that of a DVD or satellite signal, is much less and, therefore, enhancing an already-bad image will only lead to poorer results and product disappointment.
The better the quality and resolution of the Display device, the better the image. Likewise, three-year-old plasma is poor; new plasma is better. CRT projectors or monitors are still generally perceived as the best.
LCD projectors' performances range from adequate to very good. The versatility of LCD projectors remains the greatest asset. Most LCD projectors are light, portable and very - or more often reasonably - bright. They can also accept multiple types of inputs, so they work with almost any source material and most computers.
The biggest drawback to this technology is that LCD projectors' internal video Scalers are inexpensive and, although they do a reasonable job for most presentations, they often don't do a very good job with video-based sources.
Enter Focus Enhancements QuadScan Pro.
A video Scaler takes the input signal and scales it into the native resolution (manufactured pixel count expressed as 640 X 480(VGA), or 800 X 600(SVGA), or 1024 X 768(XGA), etc.) of the projector's internal LCD plate or of the plasma display. Many LCD projectors can display higher than their native resolution by using compression technology (a Graphics Scaler or scan converter, or some form of electronic processing).
HINT: When using Focus Enhancements QuadScan Pro for this application, it's vital that it be configured to output to the native resolution and not the higher compressed resolution - or lower scaled resolutions. The QuadScan processes the video source (composite, S-Video or component) information and outputs it to the native resolution of the projector. This makes the video image look cleaner and crisper with fewer artifacts (undesired noise and image corruption), producing a smooth image that is often more accurate and comfortable to view.
Taking the above factors into consideration, there is not much use using a QuadScan with a VCR, for example, and a older generation generic LCD projector projected on to an 8' wide bed-sheet or blue-textured wall. Although this sounds goofy, it happens often with portable presentations.
These presenters
are not the identified and qualified customers. The Focus Enhancements
QuadScan Pro product lends itself much more to installed or staged systems
- such as rental companies, churches, boardrooms, home theatres, lecture
rooms, etc.
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