Santa Clara, Calif. - Macrovision (NASD: MVSN), a provider of copy-protection technology and informational media databases, announced on Friday that Rupert Murdoch's News Corp. (NYSE: NWS) has sold all of its 19% stake in the company to several existing and new institutional investors.

Santa Clara, Calif.-based Macrovision developed the anti-copying technology used on most VHS tapes and later made similar advances for digital formats.

The company has since expanded through acquisitions, purchasing media database provider All Media Guide last November and then TV Guide publisher and electronic program guide developer Gemstar-TV Guide in December for $2.8 billion.

In April, the company sold its software business unit, which included products like InstallShield and FLEXnet, to a private equity firm for $200 million.

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http://www.macrovision.com