A dynamic vision sensor with direct logarithmic output and full-frame picture-on-demand

This paper presents a Dynamic Vision Sensor with a few interesting features. We directly readout the voltage on the logarithmic photo detector as the intensity information of the fired pixel. The computer is able to command the sensor to produce a full-frame picture at whatever time it needs. The sensor was implemented using AMS 0.35 μm 2P4M Opto process with an array of 384 × 320 pixels. Each pixel occupies a footprint of 30 × 30 μm2, with 12% fill factor.

[1]  Daniel Matolin,et al.  A QVGA 143 dB Dynamic Range Frame-Free PWM Image Sensor With Lossless Pixel-Level Video Compression and Time-Domain CDS , 2011, IEEE Journal of Solid-State Circuits.

[2]  Oh-Kyong Kwon,et al.  14-bit two-step successive approximation ADC with calibration circuit for high-resolution CMOS imagers , 2011 .

[3]  Tobi Delbrück,et al.  A 128 X 128 120db 30mw asynchronous vision sensor that responds to relative intensity change , 2006, 2006 IEEE International Solid State Circuits Conference - Digest of Technical Papers.

[4]  Amine Bermak,et al.  Arbitrated Time-to-First Spike CMOS Image Sensor With On-Chip Histogram Equalization , 2007, IEEE Transactions on Very Large Scale Integration (VLSI) Systems.

[5]  Bernabé Linares-Barranco,et al.  A Five-Decade Dynamic-Range Ambient-Light-Independent Calibrated Signed-Spatial-Contrast AER Retina With 0.1-ms Latency and Optional Time-to-First-Spike Mode , 2010, IEEE Transactions on Circuits and Systems I: Regular Papers.

[6]  Tobi Delbrück,et al.  Design of an RGBW color VGA rolling and global shutter dynamic and active-pixel vision sensor , 2015, 2015 IEEE International Symposium on Circuits and Systems (ISCAS).

[7]  Amine Bermak,et al.  A low power CMOS imager based on time-to-first-spike encoding and fair AER , 2005, 2005 IEEE International Symposium on Circuits and Systems.

[8]  Soon-Jyh Chang,et al.  A 10-bit 50-MS/s SAR ADC With a Monotonic Capacitor Switching Procedure , 2010, IEEE Journal of Solid-State Circuits.