Santa Clara-based Macrovision Corp. (MVSN) has completed its acquisition of technology from San Francisco-based Cryptography Resarch Inc. for the protection of Blu-ray disc content.

The acquisition of the SPDC, or Self-Protecting Digital Content, technology includes CRI patents, security software code and related third-party customer and partner agreements. It forms the basis of BD+, an added layer of content protection for movies and other content released on Blue-ray discs, which has been adopted by more than 20 companies.

Cryptography Research Inc. is a research and development firm.