Janusz C. Szajna - Polish entrepreneur and university professor. J. Szajna was the organizer and Director of Computer Engineering and Electronic Department at Zielona Gora University. He was one of 4 co-founders of ADB Group (Advanced Digital Broadcast) (SWX:ADBN), an ICT company operating in the field of Digital TV. In particular, he was the founder, and, between 1995 and 2012, President of ADB Poland – ADB Group Corporate R&D Center, which developed software and hardware for digital TV and home networking devices, employing over 500 ICT engineers. He is Professor at Zielona Gora University.