Model 516
Model 516 MPEG-2/1 Frame Grabber and Video Encoder / Decoder Model 516 is a PC/104 frame grabber that captures and transfers full-frame (640 x 480) video at 30 frames per second. It overcomes the low bandwidth of the PC/104 bus by using hardware compression to produce encoded MPEG-2 and MPEG-1 data streams of 440 kbits to 10 Mbits per second. It also has two audio input channels that are synchronized to the MPEG data. Advantages MPEG2 data reduces the amount of memory required to store full motion video. The compressed data requires a smaller transmission bandwidth. This makes it possible to transmit 30 frames/sec video and audio over the PC/104 bus or over a 10/100 Base-T Ethernet. The hardware compression circuit uses a motion estimation algorithm to produce smooth images from interlaced cameras. The length of MPEG2 video streams is not limited by the viewing software. Decompression Encoded MPEG2 data can also be decompressed by the 516’s hardware to produce composite video and audio. The video output is available at a flat cable header. The audio output is available at an audio jack and the flat cable header. Video channels The 516 has four multiplexed video channels that function as four separate composite channels or as two S-video inputs. Only one channel can be compressed at a time Digital I/O Two bi-directional logic lines are under software control. Text caption buffer A 64 character buffer is available for adding text to each frame. The text is within a transparent box that may be positioned anywhere within the frame. Self test Digitized video and audio inputs can be looped back to the output circuits to allow camera and sound adjustments. The 516’s D/A can be programmed to generate color test bars. This is useful for testing the video output channel. Lost video detection The status of the camera’s vertical and horizontal sync signals may be used to detect the presence or absence of the camera signal. The included software allows reading these signals to detect a lost video signal.
Model 314
Model 314 MPEG-4/2/1 and MJPEG Frame Grabber Model 314 is a low-cost MPEG-4/2/1 and MJPEG frame grabber that captures full-frame (720 x 480) video at 30 frames per second. Uncompressed video is available through the PC/104+ bus for previewing. It also has two synchronized audio input channels and on screen display of text (OSD). Advantages of compression MPEG and MJPEG data reduces the amount of memory required to store full motion video. The compressed data requires a smaller transmission bandwidth. MJPEG data is typically compressed by a factor 20 while MPEG-2 and -4 by a factor of 100. Image compression makes it possible to transmit 30 frames/sec of MPEG video over the PC/104+ bus. The hardware compression circuit uses a motion estimation algorithm to produce smooth images from interlaced cameras. Uncompressed capture The 314 can function as a conventional frame grabber by supplying uncompressed video with low latency and snapshots of single frames. A lower cost version, 314NC, is available without the compression circuitry and the on screen display. It uses the newest 9-bit digitizer technology plus an adaptive multi-line comb filter to produce higher quality images than those using BT878 technology. On screen display A 96 character buffer is available for adding text to each frame. The text is within a transparent box that may be positioned anywhere within the frame. This function is not available on the 314NC. Motion detection The 314 performs motion detection in three user programmable regions of interest. For each separate region of interest, the user can set up different motion detection sensitivity. Within the regions of interest motion can be further localized to a 16x16 pixel block. The following links show examples of the motion detection setup menu for Windows and the regions of interest. The motion map shows where the motion was detected. (Please see image under the tab: Images and Mechanical Drawings). Audio multiplexing Digitized audio from the 314 is multiplexed into MPEG streams by a Sensoray-supplied software in SDK. Hence, the 314 does perform A/V multiplexing as does model 516 and 616. External signals connect to the 314 via a 24-pin header. Sensoray’s optional 314TA video termination board provides BNC connections for the 314’s composite video inputs.
Model 2446
Model 2446 Streaming Video Server with HD image capture Model 2446 is a streaming video server. It compresses either standard or high definition video and synchronized audio into an MPEG format and transmits it over an Ethernet connection using the UDP or RTP protocol. The internal CPU runs an embedded Linux operating system, with hardware compression performed by the Model 2246. The encoded video is playable by commercial set top boxes such as the Amino or PC’s running free open source software like VideoLan. The 1U enclosure fits any standard 18” server rack and can be mounted in either direction. Latency Depending on network conditions, the video into the 2446 can be encoded, transmitted, and displayed by a remote network decoder in less than a second. On Screen Display (OSD) Eight separate regions of graphics and/or text can be displayed. A total of 64k pixels is available (32k double buffered). The text style can be selected from any true-type font; graphics are displayed from standard .bmp files. There is an API to place and move graphics anywhere on the screen. OSD graphics may be edited from a remote Ethernet node and viewed by other observers on the network. Ethernet Ethernet based streaming is transmitted via transport stream over an Ethernet connection. Image Processing The 2446’s scan converter guarantees the DVI output is synchronized to LCD displays. 25 frame/second PAL sources will be displayed at the highest LCD refresh rate. Real-time image down scaling of the HDTV stream prepares it for MPEG compression. Embedded Linux The 2446 is pre-configured with an embedded Linux operating system for high reliability and fast response. Video outputs Four types of video outputs are available including an SDI video stream containing the bit-map image and text overlays. The interface to an LCD display is via a DVI port and the interface to the host computer is via a USB port. Composite video and S-video outputs are also provided. All outputs are generated and scaled from a common input source.
Model 2255
Model 2255 4 Channel USB Frame Grabber The Model 2255 frame grabber accepts NTSC or PAL video on 4 composite inputs. Digitized images are sent to the host computer via USB 2.0 high-speed interface. A variety of output formats supported by the 2255 eliminates the need for format conversions in a wide range of applications. Supported formats are: 1. RGB packed (24 bits/pixel, bitmap compatible) 2. YCrCb packed (16 bits/pixel, YUY2 compatible) 3. YCrCb planar (16 bits/pixel, optimal for image processing) 4. Y8 (8 bits/pixel, monochrome). Low Latency The 2255’s allows fast visual feedback because of its low latency. Its internal DSP optimizes the four data streams for efficient USB 2.0 communication. The Windows drivers are also optimized for low latency. The overall latency is no more than 50 ms for NTSC and 60 ms for PAL. Deinterlacing Model 2255 performs optional deinterlacing of interlaced video to reduce motion artifacts on captured images. The lines of one of the fields of video are recreated from those of another field by using interpolation. This method provides better visual quality compared to simple line doubling. Since the deinterlacing is performed by the firmware running on the DSPs, it slows the capture rate down slightly. A visual example is provided here. JPEG Compression An optional firmware file is available for purchase that enables hardware JPEG compression on the 2255. The optional firmware allows JPEG capture at up to 60 total frames per second from all channels, or 2 channels at 30 fps, or 4 channels at 15 fps. The standard free SDK will allow a user to preview the JPEG capture capability but adds a black bar across the image. Standard uncompressed features are fully supported by our standard SDK.
Model 817
Model 817 PCI Express JPEG Frame Grabber Model 817 combines the functions of a frame grabber, hardware JPEG encoder, and 16 X 4 video crosspoint switch, into a PCI-express (x1) card. It is capable of capturing full resolution color JPEG-compressed images and / or monochrome uncompressed bitmaps, from 16 channels at full NTSC or PAL frame rates. Frame rate Four identical video capture and processing units (VCPU) work together to compress JPEG images at 30fps on all 16 channels simultaneously for a total board throughput of 480 fps for 640 X 480 interlaced frames. Hardware compression Model 817 executes hardware JPEG compression to reduce the amount of disk space required to store images. Hardware compression greatly reduces the load on the CPU. Multiple boards Sensorays driver supports multiple 817s in the same computer. Real-time outputs A 16x4 analog crosspoint video switch is used to route any combination of four input channels to external video monitors. Each of the four video outputs can be individually turned on or off, which allows connecting the outputs of multiple 817s to the same monitor. Text Overlay An optional single line text caption (up to 80 characters) can be overlaid on the captured images (before compression). Deinterlacing Model 817 performs optional deinterlacing of interlaced video to reduce motion artifacts on captured images. The lines of one of the fields of video are recreated from those of another field by using interpolation. This method provides better visual quality compared to simple line doubling. Since the deinterlacing is performed by the firmware running on the DSPs, it slows the capture rate down slightly. A visual example is provided here.
Valentino
Valentino Multi-channel Video Output Board Line The Valentino Multi-Channel Video Output Boards output 2, 4 or 8 (depending the model) independent video output channels for analog PAL or NTSC video formats. Each video output channel is set to one of five video output modes (Composite, S-Video or Component [RGB/YUV] video) in software. To avoid PCI-bus load, the board is equiped with full frame video memories for each video output channel, that keep the latest refreshed image stored. TM The valentino boards are designed for the standard PCI-bus (32bit/33MHz). All video outputs are available by a standard HD 62-pins connector on the board bracket. Multiple "Multi-channel Video Output Boards" in one PC-system are allowed to extend the total number of video output channels for the computer system (256 boards theoretically). TM Each valentino board adds maximum 8 video output channels to the system. TM R R The valentino line is supported for Windows , Linux and QNX . For software developers open source application sample code is provided.
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