The “SICE Forum” hosted by the School of Information and Communication Engineering has invited Prof. Seong-Jin Kim of Ulsan Institute of Science and Technology to conduct academic exchanges. Below are the details of the event, and interested students and faculty members are welcome to attend.
Topic:CMOS SPAD-Based LiDAR Sensors with Zoom Histogramming TDC Architectures
Time:10:30-11:30 (Thursday), November 9, 2023
Place：Research Building Block B, 302 (KB302), Qingshuihe Campus
Speaker:Prof. Seong-Jin Kim
Host:Prof. Jun Zhou, School of Information and Communication Engineering
Introduction:
As self-driving cars and mobile metaverse devices have been developed intensively, LiDAR sensors have emerged because they can offer precise depth images in real time. They employ mainly two technologies; direct time-of-flight (dToF) techniques based on single-photon avalanche diodes (SPAD) support long-range detection and high background resilience, while indirect ToF (iToF) counterparts provide high spatial resolution and low depth noise without a complicated time-to-digital converter (TDC). In this technical seminar, flash LiDAR sensors with three zoom histogramming TDCs (hTDC) combining both dToF and iToF techniques for utilizing their advantages simultaneously are presented. Binary and quaternary searching algorithms are introduced to minimize memory size in the hTDC, and analog counters are employed to realize an area- and energy-efficient LiDAR sensor. The overall architecture, detailed circuit implementation, and measurement results are covered.
Speaker’s Profile：
Seong-Jin Kim received his B.S. degree in Electrical Engineering from Pohang University of Science and Technology (POSTECH), Pohang, Korea, in 2001. He received his M.S. and Ph.D. degrees in Electrical Engineering from Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea, in 2003 and 2008, respectively.
From 2008 to 2012, he was a research staff member at Samsung Advanced Institute of Technology (SAIT) in Yongin, Korea, where he engaged in the development of CMOS imagers for the real-time acquisition of 3-D images. From 2012 to 2015, he was with the Institute of Microelectronics, A*STAR, Singapore, where he was involved in designing various sensing systems. He is currently an associate professor at Ulsan National Institute of Science and Technology, Ulsan, South Korea, and a co-founder of SolidVUE, a LiDAR startup company in South Korea. His current research interests include high-performance imaging devices, LiDAR systems, and biomedical interface circuits and systems.
Dr. Kim is currently a member of the Technical Program Committee at the International Solid- State Circuit Conference since 2019, and the Country Representative of South Korea for the ISSCC Far-East Region in 2021.
