Title :
A 35nW/pixel 2D visual motion sensor
Author :
Zhang, Guangbin ; Lee, Hoi ; Liu, Jin
Author_Institution :
Texas Univ., Richardson, TX, USA
Abstract :
An ultra-low power visual motion sensor based on the time stamped pixel structure is presented in this paper. Both the current-clamping circuits in the edge detector and the static logic circuit in the time stamp component are developed to allow the pixel dissipating tens of nanowatt power. In addition, both proposed edge detector and time stamp component reduce the pixel size simultaneously. Implemented in a CMOS 0.35μm process, a 2D vision motion sensor of 32×32 arrays only consumes 35nW/pixel with the chip area of (40μm×40μm)/pixel.
Keywords :
CMOS image sensors; CMOS logic circuits; edge detection; low-power electronics; 0.35 micron; 2D visual motion sensor; 35 nW; 40 micron; CMOS process; current-clamping circuits; edge detector; static logic circuit; time stamped pixel structure; ultra-low power visual motion sensor; CMOS process; Detectors; Energy consumption; Intelligent sensors; Logic circuits; Motion analysis; Motion detection; Sensor arrays; Smart pixels; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 2005. ESSCIRC 2005. Proceedings of the 31st European
Print_ISBN :
0-7803-9205-1
DOI :
10.1109/ESSCIR.2005.1541649
