Vinyl records: Columbia Records' Long Play (LP) 33⅓ rpm microgroove record (introduced in 1948) versus RCA Victor's 45 rpm record, from 1949 (the introduction of the latter) into the early 1950s.
The National Television System Committee NTSC was formed to settle the existing format incompatibility between the original 441 scan line RCA system and systems designed by the DuMont Television Network and Philco.