COPY PROTECTION SYSTEM VIDEO

Brand Owner Address Description
IPPS Macrovision Corporation 2830 De La Cruz Boulevard Santa Clara CA 95050 copy protection system for video recording media, namely electronic circuitry sold as a component of video disc players and recorders;consultation services to video copyright holders on how to actuate technology embedded in video media and players or recorders which prevent copying;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. The invention provides a recording media player and a recording media recorder provided with a high-security copy protection system of less complexity. A recording media player and/or recorder provided with a copy protection system stubborn to attacks and highly flexible in dealing with recording media of various copy conditions. For this purpose, various distributed copyright protection information (DCPI) values are used. The DCPI values include water marks in case of an MPEG stream, Copy Generation Management System (CGMS) codes, EMI (encryption mode indicator) in case of an IEEE1394-1995 interface, and user defined DCPI values. The recording is achieved such that DCPI values are recorded in user-unrewritable (or user-inaccessible) areas of the recording medium as long as possible.