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Pixel-level color image sensor with efficient ambient light suppression using modulated RGB flashlight and application to TOF range finding

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3 Author(s)
Oike, Y. ; Dept. of Electron. Eng., Univ. of Tokyo, Japan ; Ikeda, M. ; Asada, K.

We present a pixel-level color image sensor with efficient ambient light suppression using a modulated RGB flashlight to support a recognition system. Bidirectional photo integrators realize in-pixel demodulation of a projected flashlight with suppressing an ambient light at short intervals during exposure time to avoid saturation from ambient illumination. Every pixel has a capability of depth and color capture. A prototype chip has been designed using 0.35 μm CMOS process and successfully tested.

Published in:

VLSI Circuits, 2004. Digest of Technical Papers. 2004 Symposium on

Date of Conference:

17-19 June 2004