Video compression device said to cut costs in security DVRs
1 min read
Maxim Integrated Products has unveiled a 4channel analogue to digital front end for converting analogue video and audio signals to the digital format required for compression. According to Maxim, by integrating an on chip memory controller to support a variety of output formats, this eliminates the need for the fpga or interface logic required by similar products and reduces costs by over $1 per channel.
The MAX9530 has been designed to address the video security market, wherein large scale deployments can involve hundreds of analogue CCTV video cameras and microphones. Each one can require analogue to digital conversion for subsequent digital compression, recording, and transport over IP networks. Typically, designers require an fpga to interface the video decoder with Maxim's H.264 video processor and costing around $5 apiece, it can increase total installation costs in large scale deployments.
According to Maxim, the MAX9530 eliminates this interface requirement by directly connecting to its MG3500 and other H.264 video processors. It is said to perform all the digital conversions required for up to 4channels of analogue video and audio input.
Paired with the MG3500, the device is designed to provide a complete analogue to compressed digital video/audio signal path, reducing cost in security DVRs.
Direct connection has been made possible through the MAX9530's integrated memory controller, which assembles 4channels into a single optimally formatted data stream for H.264 compression. It doesn't rely on the compression engine to reformat all 4channels separately for compression, but performs the function automatically in advance to preserve video processor performance.
It features 54MHz 10bit ADC, differential inputs, video equaliser and interchannel crosstalk (> 60dB).
