Image sequences may be captured at full or reduced frame rates. Temporal decimation can reduce the frame rate down to one
image per second.
6.1.9. Trigger I/O
Four input and four output TTL triggers can be used for synchronization with external events. The trigger signals are controlled
by the host CPU.
For applications requiring asynchronous reset of the camera, it should be noted that PIXCI® SV4 requires two vertical sync
intervals prior to digitizing the video correctly.
6.1.10. PCI Interface
The PIXCI® SV4 imaging board is designed to use the 132 Mbytes/second, burst mode transfer rate of the PCI bus. As a bus
master, the PIXCI® SV4 imaging board sends image data to the PCI bus; it does not wait for the computer's CPU to read images
from the board into PC memory.
Each PCI bus data cycle can move two pixels (32 bits). If burst mode is not used, the transfer can take several PCI bus cycles. If
burst mode is used, two pixels can be transferred on each PCI bus data cycle. When digitizing full resolution video formats and
scaling or cropping is not being performed to reduce the number of pixels to be transferred to the PCI bus, burst mode is required
to avoid loosing pixels. The PCI bus can only achieve 132 MB/S data transfer rates by using burst mode. If burst mode is not
supported or is disabled; only scaled, cropped, or reduced resolution images can be transferred on the PCI bus.
Image sequences may be captured at full or reduced frame rates, onto the PCI bus, for storage in the host computer's memory, or
can be passed to other devices on the PCI bus such as disk controllers or S/VGA adapters.
6.1.11. Display
Image display is not a function of the PIXCI® SV4 imaging board, however it is discussed here since many applications require
image display. The PIXCI® SV4 imaging board relies on an S/VGA board for image display. Depending on the VGA adapter, 24
bit RGB color images, 16 bit S-Video color images, or 8 bit monochrome images may be displayed. The full, scaled, or cropped
image may be placed anywhere on the VGA screen.
Color or monochrome image data can be passed across the PCI bus directly to the S/VGA for live video-in-a-window display,
depending on the S/VGA adapter. With a fast processor, fast PCI bus, and fast S/VGA adapter, 30 frame per second color image
data may be displayed. Some S/VGA adapters provide graphics overlay on the live video.
6.2. Applications
Automated Inspection
Motion Analysis
Metalurgical Analysis
Biological Analysis
Microscopy
Medical Image Archival
Robotics
Laser Beam Analysis
Object Tracking
Multimedia
Print Quality Inspection
6.3. Features
Composite/S-Video/NTSC/RS-170/CCIR/PAL to YCrCb (4:2:2).
Square Pixel and CCIR601 Resolution for NTSC and PAL Formats.
Chroma Comb Filtering.
Programmable Horizontal Scaling and Vertical Scaling.
Programmable Cropping.
Vertical Scaling Line Store.
Programmable Temporal Decimation for Reduced Frame Rate.
Programmable Hue, Brightness, Saturation, and Contrast.
Double Frequency Oversampling A-D Converters.
PIXCI® SV4 User's Manual
http://www.epixinc.com/manuals/pixci_sv4/index.htm
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