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

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4 Author(s)
Shoushun Chen ; Sch. of EEE, Nanyang Technol. Univ., Singapore, Singapore ; Wei Tang ; Zhang, Xiangyu ; Culurciello, E.

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 of pixels intensity modulation, so that only significant frames are communicated. The prototype chip was implemented using a 2-poly 3-metal AMIS 0.5 μ 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.

Published in:

Very Large Scale Integration (VLSI) Systems, IEEE Transactions on  (Volume:20 ,  Issue: 12 )

Date of Publication:

Dec. 2012

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