NCast Digitizer Capture Card v3.0 - Manual (Page 3)

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1. Introduction
The NCast Digitizer Capture Card 3.0 functions as an RGB, DVI, and video capture
device. The DCC-3 card also provides customizable Picture-in-Picture (PiP) capabilities
for video within graphics display. The DCC-3 card supports up to UXGA resolution and
delivers SXGA at 30 fps. The DCC-3 card is primarily designed for applications
requiring high resolution and high frame rates. Example applications include webcasting
over IP, local capture, remote viewing, and replacing dedicated monitors.
The DCC-3 is a PCI plug-in card, and is compatible with Windows XP/2000 and Linux
operating systems. Drivers for both operating systems are available at
www.ncast.com/downloads . The card is designed to work with software such as
Windows Media Encoder for real time streaming, presentation authoring, and archiving
of high resolution/frame rate graphics and video.
2. Hardware Overview
The DCC-3 card is designed to capture high resolution and frame-rate graphics. The card
accepts inputs from DVI and HD15 RGB inputs, and also S-Video and BNC Composite.
The RGB data is transferred using the PCI bus master DMA.
Resolutions
The DCC-3 card supports resolutions up to UXGA (1600x1200) from the RGB and DVI
sources. Scaling options also are available. For instance, a smaller resolution such as
1024x768 can be sent at either the original resolution, or scaled to a different resolution.
For instance, the DCC-3 can accept a 1280x720 input and scale it up to a 1600x1200
resolution. Ultimately based upon user settings, the resolution from the input signal will
be scaled up/down to the selected resolution. For a list of support resolutions by the
DCC-3 card, please reference Appendix A.
Frame-rate
The DCC-3 card is designed to capture a maximum of 30 fps. of 1280x1024 and 18 fps.
of 1600x1200. However, the highest possible frame-rate is dependant upon the signal
frequency, PCI bridge and CPU of the host computer. For instance, the user can expect a
higher frame rate by using an Intel P4 @ 2.0 GHz then a P4 @ 1.06 GHz.