CBS color broadcasting only lasted for four months. CBS suspended it when the manufacture of color television receivers was halted by the US government as part of the Korean War effort. When the ban on color sets was rescinded in 1953, CBS announced that it had no plans to resume broadcasting using its field-sequential color system. A major problem with the CBS system was that the video was not "compatible" with existing black-and-white TV sets. A competing dot-sequential color system being developed by RCA was compatible, and in late 1953, the FCC switched its approval to an RCA-based system of broadcasting color TV.