| US 7,551,738 B2 | ||
| Separation of copy protection rules | ||
| Alexander Medvinsky, San Diego, Calif. (US); Petr Peterka, San Diego, Calif. (US); and Jiang (Jason) Zhang, San Diego, Calif. (US) | ||
| Assigned to General Instrument Corporation, Horsham, Pa. (US) | ||
| Filed on Sep. 02, 2004, as Appl. No. 10/933,011. | ||
| Application 10/933011 is a continuation in part of application No. 10/672929, filed on Sep. 26, 2003, abandoned. | ||
| Prior Publication US 2005/0071669 A1, Mar. 31, 2005 | ||
| Int. Cl. H04N 7/167 (2006.01) | ||
| U.S. Cl. 380—203 [726/26; 726/27; 726/30; 725/148; 380/201; 380/212] | 13 Claims |
| 1. A copyright protection method (150) for one or more files comprising:
storing said one or more files on at least one computer;
employing (151) a first protection scheme for use within a single authorized domain, in which all interfaces are protected with a same digital
rights management system;
employing (152) a second protection scheme for use in inter-domain file transfers; and
employing (153) a third protection scheme for external outputs not protected by a digital rights management system, wherein said third protection
scheme includes one or more of:
specifying copy protection information separately for one or more analog outputs, one or more digital uncompressed outputs
and one or more digital compressed outputs;
specifying a CGMS (Copy Generation Management System) Copy protection state;
specifying MACROVISION parameters for one or more analog outputs; and
specifying if a particular type of output is allowed at all, and disabling the particular type of output if the particular
output type is not allowed.
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