| Frame rates
The 617-4’s JPEG compression engine has a capture rate of 30 fps at 640x480 resolution
(25 for PAL) or 7.5 fps per channel, if all channels are used. At 320x240 resolution, the capture rate is 120 fps (100 for PAL) or 30 fps per channel. Hardware compression
Model 617-4 executes hardware JPEG compression to greatly reduce the amount of memory needed to store images. Hardware compression reduces the CPU and PCI bus loading. Multiple boards
Sensoray’s software supports multiple 617-4’s in the same PCI bus. For example, two 617-4’s may be used to expand the number of video inputs to eight. Real-time outputs
Four video inputs are routed to four output channels for display on video monitors. A software-selectable switch after each buffer amplifier allows multiple 617-4’s to share the same video monitor. Text overlay
The 617-4’s caption buffer allows overlaying text on each frame. The text is within a transparent box that may be positioned in one of 4 possible locations of the frame. The text size and color are programmable. Special output
The 617-4 also supplies small-size uncompressed frames suitable for motion detection by the host computer. These are 128 x 96 pixels or 256 x 192. Software and Manuals
The 617 includes drivers for Windows 98/NT/2000/XP. A Linux driver for kernel 2.4.10 is under development. Each kit includes sample application programs. The included software uses the hardware compressed images to make motion JPEG files in the AVI format. A software developer’s kit, SDK17, is available for download.
617-4 Hardware Manual >> Released 7/3/03
617-4 Software Manual >> Released 7/3/03
617-4 SDK Version 2.2 >> Released 10/29/03
617-4 Windows Update Version 2.30 >> Released 6/29/05
Linux driver for 2.4 Kernels V.0.9 >> Released 10/18/05
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