Real-Time and High-Resolution 3-D Image Sensor

We have proposed a sensor architecture and circuit implementation of "Smart Access", which achieves high-speed position detection of a scanning beam for real-time 3-D measurement. For both high pixel resolution and real time measurement, we have also proposed a column-parallel readout scheme by an adaptive thresholding circuit and a time-domain approximate A/D converter.

640x480 (VGA) and 1024x768 (XGA) range finders have been developed and the measurement system with these imagers realize "Real-Time" and "High-Accuracy" 3-D measurement.