Patents Examined by Elliott Akporherhe
  • Apparatuses and methods for copy protection
    Patent number: 7925020
    Abstract: Apparatuses and methods may include creating at least one of a scramble key and a descramble key using a Copy Protection (CP) key that existed prior to a refresh period and using a value created at a time associated with the changing of a channel during the refresh period, and using the at least one of the scramble key and the descrambled key until the CP key is refreshed at an end of the refresh period.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: April 12, 2011
    Assignee: LG Electronics Inc.
    Inventor: In Moon Kim