311 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 and one with an
S-video output. The 311 provides four digital input lines and
four output lines to control camera focus, pan, tilt and
Model 311 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.
requires the PC/104+ bus.
The Model 311 uses special circuitry to achieve
horizontal and subcarrier synchronization to incoming
The 311's signal
processor uses two flash analog-to-digital converters; one for
chrominance and one for luminance. Each A/D provides 2x over
sampling of the camera signal. Over sampling, combined with analog
anti-aliasing filters, significantly reduces the overall sensitivity
to unwanted aliasing signals and enhances the 311's digital
The 311 is capable of sending just the luminance data to the
host's image buffer. This feature speeds capturing monochrome
Included Software (SDK
development kit, SDK, includes a C-language sample program that
allows capturing and saving color and monochrome images. It
illustrates the 311'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
An optional DOS driver, x11DOS, includes
a C++ application program.
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 $ 95.
JPEG MPEG2 frame grabber PCI
PC/104 PC/104+ Linux surveillance video over ip imaging
ethernet cpu video capture