Gemstar
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Gemstar–TV Guide International, Inc. was a media company that licensed interactive program guide technology to multichannel video programming distributors such as cable and satellite television providers, and consumer electronics manufacturers; video recorder scheduling codes under brands such as VCR Plus; as well as serving as publishers of TV Guide magazine as well as operators of tvguide.com, owners of TV Guide Network and TVG Network, and provided various related services. On May 2, 2008, Gemstar–TV Guide International, Inc. became a wholly owned subsidiary of Macrovision Solutions Corporation, which later changed its name to Rovi Corporation on July 16, 2009.
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