611 frame grabber converts video camera signals into digital
data required for computer image processing and display. Up to
four cameras may be connected to the board: four with
composite video or three with composite video and one with an
S-video output. The 611 provides four digital input lines and
four output lines to control camera focus, pan, tilt and
Model 611 can
transfer 30 frames per second with the supplied software. It
supports a variety of digital formats including RGB24 and Y8
that are directly compatible with Windows bitmaps.
The Model 611
uses special circuitry to achieve horizontal and subcarrier
synchronization to incoming video. It guarantees generation of
the required pixel/line from a video source in which line
length can vary by several microseconds. This circuitry
allows the 611 adapter to quickly and accurately lock on to
video signals, regardless of source. Since the technique is
completely digital, the 611 can recognize unstable signals
caused by VCR head switching and adapt the locking mechanism
to accommodate the source.
Separate BNC-style and
DIN connectors are used to preserve the high frequency components of
the video signals. A male header connector is used for the
non-critical control signals to the camera.
Included Software (SDK)
The software development kit, SDK, includes a
C-language sample program that allow capturing and saving color and
monochrome images. It illustrates the 611's scaling feature and
shows how to call the included DLL from a C program. The supplied
32-bit DLL supports interrupts and multiple DMA buffers that may be
scattered within the host's memory. The DLL supports capture
directly into video memory and graphic overlays when using Direct
Draw (only supported with enhanced SDK).
An optional DOS driver, x11DOS , includes a C++
A Linux driver is available.
development kit, SDK11E, includes more sample
applications. It supports Direct Draw and the ability to store a
color and monochrome image. SDK11E is sold separately for $