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:
Aug. 03, 2010
Filed:
Jan. 13, 2006
Sung-mu Son, Gyeonggi-Do, KR;
Te-hyun Kim, Gyeonggi-Do, KR;
Dong-hee Shim, Seoul, KR;
Kyu-sung Han, Seoul, KR;
Min-jung Shon, Seoul, KR;
Seung-jae Lee, Gyeonggi-Do, KR;
Youn-sung Chu, Gyeonggi-Do, KR;
Sung-Mu Son, Gyeonggi-Do, KR;
Te-Hyun Kim, Gyeonggi-Do, KR;
Dong-Hee Shim, Seoul, KR;
Kyu-Sung Han, Seoul, KR;
Min-Jung Shon, Seoul, KR;
Seung-Jae Lee, Gyeonggi-Do, KR;
Youn-Sung Chu, Gyeonggi-Do, KR;
LG Electronics Inc., Seoul, KR;
Abstract
A method of digital rights management for a broadcast-multicast service, the method comprising receiving a request from a terminal to join a service domain having a common group key; transmitting encryption of one or more service encryption keys using the common group key to the terminal that requested to join; and allowing the terminal to share the same contents and the same services with one or more other devices within the service domain.