His research interests includes designing VLSI architectures for low power multimedia and wireless applications, developing power management circuits and techniques for embedded portable devices and ultra-low power systems. Prof. Tsui has published more than 150 referred technical journal and conference papers. He received the Best Paper Awards from the IEEE Transactions on VLSI Systems in 1995, IEEE/ACM ISLPED in 2007, IEEE DELTA 2008, and supervised the Best Student Paper Award of the 1999 IEEE ISCAS. He also received the Design Awards in the IEEE ASP-DAC University Design Contest in 2004 and 2006. He holds 7 US patents.

Research Interests
VLSI design and CAD algorithms for energy efficient high performance microprocessors; power analysis and optimization for CMOS circuits; low power embedded systems design; VLSI design for multimedia; high-speed network and wireless application.