A 64 $\times$ 64 Pixels UWB Wireless Temporal-Difference Digital Image Sensor

Shoushun Chen, Wei Tang, Xiangyu Zhang, Eugenio Culurciello
2012 IEEE Transactions on Very Large Scale Integration (vlsi) Systems  
In this paper we present a low power temporal-difference image sensor with wireless communication capability designed specifically for imaging sensor networks. The event-based image sensor features a 64 64 pixel array and can also report standard analog intensity images. An ultra-wide-band radio channel allows to transmit digital temporal difference images wirelessly to a receiver with high rates and reduced power consumption. The sensor can wake up the radio when it detects a specific number
more » ... pixels intensity modulation, so that only significant frames are communicated. The prototype chip was implemented using a 2-poly 3-metal AMIS 0.5 m CMOS process. Power consumption is 0.9 mW for the sensor and 15 mW for radio transmission to distance of 4 m with rates of 1.3 Mbps and 160 fps. Index Terms-CMOS image sensor, motion detection, temporaldifference, ultra-wide-band (UWB), wireless sensor network.
doi:10.1109/tvlsi.2011.2172470 fatcat:3xtz62eohzay5bukfxtclcfaqi