En-hui Yang is an international leader in source coding, a branch of information theory dealing with how to efficiently encode information for transmission, storage, and processing. A recipient of many awards including the 2007 Ernest C. Manning Award of Distinction and an IEEE Fellow, he has made profound contributions to communication engineering by introducing new fundamental source coding theory, solving long-standing open problems in source coding, inventing state-of-the-art lossless and lossy multimedia coding algorithms, co-founding SlipStream Data Inc., now a subsidiary of Research in Motion, and transforming his research results and coding algorithms into practice, which now impact on the daily life of tens of millions of people worldwide over 130 countries.