rmvale@watcgl.waterloo.edu (Ruth Vale) (11/21/89)
ICR Evening Lecture Series Dr. William B. Cowan Associate Professor of Computer Science & Psychology Date: Monday, November 27, 1989 Time: 8:00 p.m. Place: DC 1302 Colour adds greatly to the richness of all aspects of visual experience. At the same time it is surprisingly difficult to use effectively, whether its purpose is aesthetic or informational. The increasing use of colour on computer displays makes it imperative that techniques for using colour, long known to designers and artists, be embodied in graphical algorithms for use by the computer industry. To do so it is necessary to study the interaction of the human visual system with the display properties of computer output media. This lecture provides an introduction to human processing of information displayed using colour, with an emphasis on those aspects that are important for computer graphical computer interfaces and some of the novel problems that arise when the display surface is shared by the output of several application programs. William Cowan has been an associate professor of computer science and psychology since 1988 and is director of the Computer Graphics Laboratory. He obtained a BSc in physics from the University of Waterloo, then worked at the National Research Council of Canada where he learned colour psycho- physics from the late Gunter Wyszecki. His research interests encompass many aspects of the transfer of information from a computer to its human user, particularly those in which information density is great and where temporal and multi-processing (by human or computer) factors are important.
rmvale@watcgl.waterloo.edu (Ruth Vale) (01/15/90)
ICR Evening Lecture Series Fast Silicon Chips from Fast Computer Programs Dr. David J. Roulston Electrical and Computer Engineering University of Waterloo Monday, January 22, l990 Davis Centre Room l302 8:00 p.m. Admission is free. Refreshments served after the talk. Everyone welcome! Abstract The talk will describe the most widely used type of computer chip for high speed applications, emitter coupled logic (ECL), in which a combination of fast computer analysis and new laboratory fabrication procedures have produced significant improvements. The presentation will include an overview of fabrication methods used at the Silicon Devices and Integrated Circuits (SiDIC) laboratory at the University of Waterloo. It will explain the problems associated with making high speed logic chips on silicon and how the use of a fast computer program - BIPOLE, developed at Waterloo - can assist researchers and industrial engineers to reduce the propogation delay time of ECL circuits. The talk will conclude with a brief outline of present trends and anticipated performance for both silicon and GaAs structures.