 
 <prompt> Wetin Charles Ginsburg do? Based on di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: ```NHK, di Japan Broadcasting Corporation, start to dey do research to "unlock di fundamental mechanism of video and sound interactions with di five human senses" for 1964, afta di Tokyo Olympics. NHK set out to create an HDTV system wey score pass for subjective tests pass NTSC wey dem don dub "HDTV" before. Dis new system, NHK Color, wey dem create for 1972, include 1125 lines, a 5:3 aspect ratio and 60 Hz refresh rate. Di Society of Motion Picture and Television Engineers (SMPTE), wey Charles Ginsburg dey head, become di testing and study authority for HDTV technology for international theater. SMPTE go test HDTV systems from different companies from every conceivable perspective, but di problem of combining di different formats dey disturb di technology for many years.``` 