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Decoders enhance surveillance video quality

Posted: 21 Aug 2009 ?? ?Print Version ?Bookmark and Share

Keywords:NTSC/PAL? video decoder? comb filter?

Texas Instruments Inc. has released the TVP5158, TVP5157 and TVP5156 multichannel NTSC/PAL video decoders that feature advanced 2D adaptive comb filter core and image enhancement techniques, such as auto contrast and video noise filtering.

With the ability to simultaneously decode four channels of video input, the new TVP515x solutions are suitable for video surveillance and video conferencing designs that require multiple channels of decoding in a cost- and space-efficient manner. These applications include multi-channel DVR, digital video servers, hybrid DVRs, cameras for video conferencing and digital signage products. Additionally, flexible video outputs on the TVP5158 and seamless interface to TI digital media processors based on DaVinci technology (TMS320DM6467 and TMS320DM365) reduce system cost by up to $10 by eliminating the need for an external FPGA.

Each TVP515x device features four high-quality NTSC/PAL video decoders that can concurrently decode four video channels and then stream a single output to the DSP, enabling customers to benefit from a lower cost per channel. They feature high-quality five-line adaptive comb filter algorithms for all NTSC/PAL standards and multichip operation with two TVP5158 devices allowing for simultaneous eight-channel half D1 or eight-channel CIF output. The auto contrast feature improves image quality under poor lighting conditions and off-loads processing from the associated DSP, giving customers more headroom to implement other algorithms. The chips offer video noise reduction with 2D spatial filtering improves image quality and compression ratio under poor lighting conditions for better storage compression.

The three video decoders are available for sampling and priced as follows: TVP5158 for $8.25, TVP5157 for $7.75 and TVP5156 for $7.25 (1,000 units). An evaluation module will be available in Q4 09.

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