The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 19, 2012
Filed:
Nov. 07, 2008
Applicant:
Youn-sung Chu, Gyeonggi-Do, KR;
Inventor:
Youn-Sung Chu, Gyeonggi-Do, KR;
Assignee:
LG Electronics Inc., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is domain upgrade method in Digital Rights Management (DRM) capable of reducing network resources by simplifying signal procedures at the time of transferring changed domain keys. A device joining after domain upgrade is provided with only a domain key of a domain generation after the domain upgrade, but is not provided with a domain key of the previous domain generation. Accordingly, even if the joining device is mal-operated or is hacked, contents before upgrade are prevented from being illegally used or leaking out.