Macrovision lands All Media

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Digital security company Macrovision said Tuesday that it has agreed to buy entertainment database company All Media Guide for $82 million in cash.

AMG is one of the world's largest providers of music and film information and holds a database of ratings, biographies and essays.

The deal is expected to help Macrovision -- which protects clients' copyrights by scrambling videos and music -- sell greater interactive content to consumers.