Mr. Takechi received B.E and M.E. degree from Tohoku University, Sendai, Japan in 1987 and 1990 respectively. He joined NHK in 1990. Since then, he studied many areas of broadcasting technologies at its Science and Technology Research Laboratories including satellite digital broadcasting system, multiplexing, and middleware and interactivity.
Among them, his particular interest is middleware and architecture of interactive TV. His research contributed to receiver architecture and system design of Japanese interactive TV systems and Integrated Broadcast-Broadband (IBB) systems, namely BML, ARIB-J and Hybridcast. He was the Working Group leader to create specifications of system architecture, mono-media coding for interactivity, and closed captions, and was a major contributor for interactive systems at Japanese standardization bodies, ARIB and IPTV Forum Japan.
He has also been active for international standardization. He took a lead, as a Sub-Working Group chairman and a Rapporteur, to create more than 15 ITU-R and ITU-T Recommendations and ITU-R Reports for interactive TV systems, IBB systems, and accessibility. He is Co-Chair of IRG-IBB which is in charge to develop Recommendations for interactivity and IBB systems at ITU-R and ITU-T. He also made a contribution to ISO/IEC JTC 1/SC2 to revise Universal coded Character Set (UCS, ISO/IEC 10646) standard to add new symbols for UHDTV services in Japan, which brings easiness for compatibility between UCS based broadcasting services and the web.