I want to know the answer to the following question:
Who purchased the majority stake and re-marketed the product in 1980?
All the background I'm provided with is that "Pioneer Electronics later purchased the majority stake in the format and marketed it as both LaserVision (format name) and LaserDisc (brand name) in 1980, with some releases unofficially referring to the medium as "Laser Videodisc".". Is that enough to answer the question?