A 1.2mW CMOS temporal-difference image sensor for sensor networks

Author

Fu, Zhengming ; Culurciello, Eugenio

Author_Institution

Electr. Eng. Dept., Yale Univ., New Haven, CT

fYear

2008

fDate

18-21 May 2008

Firstpage

1064

Lastpage

1067

Abstract

In this paper we report a 64x64 active pixel image sensor (APS), Mototrigger, which targets low-power image sensing for sensor networks. The image sensor computes the temporal- difference between two continuous light-intensity frames and communicates them in address-event format. The image sensor is capable of computing 30 temporal-difference frame/s and consumes 1.2mW with a 3V power supply. Light-intensity images are also available as an output at a speed of 60 frame/s. The pixel occupies an area of 29x28mum² with a All factor of 23%. The die size is 3mm by 3mm, including pads and test structures. The image sensor is fabricated in a 0.5mum bulk CMOS process.

Keywords

CMOS image sensors; low-power electronics; CMOS temporal-difference image sensor; Mototrigger; continuous light-intensity frame; light-intensity image; low-power image sensing; power 1.2 mW; sensor networks; size 0.5 mum; voltage 3 V; CMOS image sensors; Computed tomography; Image sensors; Photodiodes; Pixel; Power supplies; Sensor arrays; Switches; Timing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on

Conference_Location

Seattle, WA

Print_ISBN

978-1-4244-1683-7

Electronic_ISBN

978-1-4244-1684-4

Type

conf

DOI

10.1109/ISCAS.2008.4541605

Filename

4541605