Keynote and Invited Speakers
Department of Electrical Engineering, Faculty of Engineering, Kasetsart Universityfengspsr@ku.ac.th
Nanoscale Vacuum Electronic Devices
Dr. Siwapon Srisonphan. He received the B.E. degree in electrical engineering from King Mongkut's Institute of Technology Ladkrabang, Thailand, in 2005, and the M.Sc and Ph.D. degrees in electrical engineering from the University of Texas at Austin and the University of Pittsburgh, USA, in 2009 and 2013, respectively. After graduation, he joined the Department of Electrical Engineering, Kasetsart University as a Lecturer. His current research interests include Solid State Electronics, Micro-nanoelectronic devices and semiconductor modeling, Renewable Energy and Energy Storage. During his PhD study, he worked in nano-optics/electronics. His research in nano-electronics area deals with developing a new class of devices that offer femtosecond transit time operating at a single-electron level at room temperature. The operating principle involves ballistic transport of electrons in localized nanochannels. This study aims at developing a fundamental understanding of the charge transport process and its application to ultrafast, low power device operation.
Charges flowing through a semiconductor usually experience to scattering processes, causing power loss and a degradation in signal quality, whereas vacuum is an ideal medium for electron conduction which is containing nothing to interrupt charge flow. The electron traveling through the vacuum channel is subjected to be ballistic transport. Vacuum electronic devices can thus operate at higher frequencies and power than equivalent solid-state semiconductor devices. Vacuum electronic devices, however, commonly suffer from low emission currents and high operating voltages. It is difficult to achieve ballistic electron transport in a solid-state medium as well because the high electric field used to increase the carrier velocity also increase scattering. Here, we report a hybrid electrical device that combines the technical performance advantages of vacuum tubes, with the nanoscale integration of solid-state MOS transistors. A low-voltage field-effect transistor with a vertical vacuum channel (channel length of ?20 nm) etched into a metal-oxide-semiconductor substrate demonstrates a transconductance of 20 nS ?m-1, an on/off ratio of 500 and a turn-on gate voltage of 0.5 V under ambient conditions. A short void channel which is designed to be shorter than the mean free path for electrons in air (~ 100 nm), enabling low collision opportunity between an electron and a gas molecule, and the channel behaves as a vacuum. Coulombic repulsion in the two-dimensional electron system at the interface between the oxide and the metal or the semiconductor reduces the energy barrier to electron emission, leading to a high emission current density (?1?105 A cm-2) under a bias of only 1 V. The emission of two-dimensional electron systems into vacuum channels could enable a new class of low-power, high-speed electronic devices.
Prof. Hideo Maejima
Tokyo Institute of Technology
History and Recent Topics in Embedded Processors
Prof. Hideo Maejima received the B.S. and M.S. degrees in control engineering, and Ph.D in information engineering from Tokyo Institute of Technology, Tokyo, Japan, in 1971, 1973 and 1986, respectively. He is currently a professor emeritus of Tokyo Institute of Technology. His current interests include microprocessor architecture, especially multi-cores and reconfigurable computing, and very low power VLSI technologies.
Embedded systems have expanded in various applications according to the progress of microprocessors. In this talk, history of the embedded systems and processors are reviewed. Before 1970, in which microprocessors had not appeared yet, embedded processors with discrete devices or small-scale IC's were applied to military applications like missiles and spacecrafts. After this, in 1971 to 1980, microprocessors began to be applied to industrial applications like elevators as controllers of them. In 1981 to 1990, they were rapidly extended to engine control systems for automobiles, the first generation game machines, printers for office automation systems, and consumer applications like refrigerators and washing machines. In 1991 to 2000, digital cameras, cellular phones and high-performance game machines appeared in the fields of various digital instruments using advanced microprocessors with image and voice processing. After 2001, multi-core and reconfigurable processors appeared and were applied in high-performance embedded systems. At last, as recent topics, those processors are introduced.
Prof. Koyo Katsura
Embedded systems to support society and those technologies
Prof. Koyo Katsura received the B.E. and the M.E. degree in electrical engineering from Kyoto University in 1977 and 1979 respectively. He also received the Ph.D. degree in information engineering from Kyoto University in 1999. He had been engaged in R&D group of Hitachi, Ltd.for about thirty years. He is currently a Professor of Kogakuin University. His research interests include graphics and image processing architecture and embedded system.
The application field of embedded systems is spreading by the progress of information and electronics technology. Embedded system with its core microprocessor penetrates in wide application fields, from home appliances and consumer devices such as mobile phones and smart phones to social infrastructure systems such as power, transportation and urban systems. These many devices used in society make it possible to molt to sophisticated smart systems by installing information and control technology and connecting each other through the network. In this talk, some practices of embedded systems to play active parts in many places of society and the technology behind embedded systemsare described. In addition, automotive technology is focused on as an example. It includes state-of-the-art development of advanced driver assistance systems aiming safe, reliable, and comfortable servicesand energy saving technology for the low-carbon society.
Prof. Tomohiko Uyematsu
Tokyo Institute of Technology
Information Theory Revisited: A Direct Approach
Prof. Tomohiko Uyematsu received the B.E., M.E. and Dr.Eng. degrees from Tokyo Institute of Technology in 1982, 1984 and 1988, respectively. He is currently with the Department of Communications and Computer Engineering as professor. His current research interests are in the areas of information theory, especially Shannon theory, multi-terminal information theory, and random number generation.
Information theory was originated by Shannon in 1948, and had an immense impact on telecommunication systems. Information theory clarifies two fundamental limits in communication;(1) the ultimate data compression, and (2) the ultimate transmission rate of reliable communication. The first limit is measured by the entropy, and the second by the channel capacity. These two information measures had profound influences on current ICT toward construction of the ultimate communication system. More than 50 years after Shannon's original paper, Renner and Wolf introduced new information measures, and provide simple and general methods for information theory. Their information measures are directly connected the data compression and transmission rate of reliable communication. Further, their information measures can treat the most general information sources and channels. In this talk, after introducing Shannon's information theory, we explain new methodsdeveloped by Renner and Wolf, and show our resultsobtained in their methods.
Prof. Lizhuang Liu
Shanghai Advanced Research Institute, Chinese Academy of Sciences
Advance in Image and Video Processing Technology using Embedded System
Prof. LizhuangLiu received the B.S. and M.S. degrees in electronic engineering from North University of China, and Ph.D. in biomedical engineering from Xi'an JiaoTong University,Xi'an, China, in 1996, 1999 and 2003, respectively. He is currently a professor of Shanghai Advanced Research Institute, Chinese Academy of Sciences. His research interests are image and video processing, ASIC/SoC design, and smart city application.
The entire electronics industry is undergoing a transition to smarter systems. This change is all connected to embedded systems for stability and low cost. In this talk, an industrialized HD imaging and smart videopracticeare introduced. Recent years, city security surveillance system is moving to high definition resolution, highly integration, and automatic video analysis. It is a challenge to achieve good imagequality in outdoor environment, which suffering from lighting conditions, strong reflecting, low luminance, and different weather. So we designed pipeline HD image signal processor and embedded firmware based on programmable SoC, which integrates high resolution, wide dynamic range, 3D noise reduction, auto exposure control, defog, low luminance enhancement, etc. Also, an embedded smart video platform with imaging is described. It is enabling us to research and develop smart video analysis and forms highly integrated front-end devices.