Don Munsil is a software engineer for a variety of companies, including Sierra On-Line and Microsoft. He met Stacey Spears in late 90's and collaborated on several popular articles on video technology and on a benchmark testing process for progressive-scan DVD players, plus a popular in-depth article about deinterlacing that has won accolades from all over the industry. They worked together to create new technologies and tools for video processing, which led to the formation of Spears & Munsil to do video technology consulting and creation of calibration and evaluation tests. Don wrote all of the custom rendering tools and video processing software that Spears & Munsil uses to create test patterns. Stacey and Don are the authors of several patents relating to video technology and deinterlacing.