Complex sentence: The first model of VCR for the format was the Model 212, introduced in 1980 by Funai and Technicolor, which Funai had started a joint venture with to manufacture and introduce the format to the home video market.
Split into simpler sentences: The first model of VCR for the format was the Model 212, introduced in 1980 by both Funai and Technicolor. The two companies had created a joint venture to manufacture and introduce the format to the home video market.