it's Black history month! this is Dr. Mark Dean, who worked on the design team of the original IBM PC. he worked on the design of the CGA card--his name is on two patents around generating composite video. 
he was at the start of his career, in his early 20s, when he did this. later, he studied at Stanford University and received his PhD, then did more amazing work at IBM, ending up with the prestigious title of IBM Fellow!
more details on his career can be found at Wikipedia, although the article is a bit thin. en.wikipedia.org/wiki/Mark_Dean…
the color circuit patent is particularly clever. it uses flip flops as phase shifters to create 6 different NTSC colors, and a mux to select between them.
i went into more detail about this circuit in another thread.
https://twitter.com/TubeTimeUS/status/1346619186475196416
here's an interview with him from when he was running the IBM Almaden research center.
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