Design of a Charge Domain CMOS Time-of-Flight Range Image Sensor

Izhal ABDUL HALIN  Shoji KAWAHITO  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E87-C   No.11   pp.1889-1896
Publication Date: 2004/11/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on New System Paradigms for Integrated Electronics)
Category: 
Keyword: 
time-of-flight,  inverting amplifiers,  range resolution,  active illumination,  

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Summary: 
In this paper we present a new type of CMOS Time-of-Flight (TOF) range image sensor based on CMOS Active Pixel Sensor (APS) techniques. The TOF sensor features high-speed and efficient photo-charge transfer that is essential in range imaging. The rapid and efficient charge transfer is made possible by the use of a high-gain inverting amplifier and capacitors connected alternatively to the feedback path. This leads to the cost-effective implementation of the system. The analysis of simulation results suggests that the proposed technique can achieve a sufficient range resolution of millimeters to centimeters depending on the maximum measured range, if the noise is dominated by photon shot noise.