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:
Dec. 25, 2012
Filed:
Dec. 15, 2005
Sung-hyu Han, Seoul, KR;
Myung-sun Kim, Uiwang-si, KR;
Young-sun Yoon, Suwon-si, KR;
Sun-nam Lee, Suwon-si, KR;
Bong-seon Kim, Seognam-si, KR;
Jae-heung Lee, Suwon-si, KR;
Sung-hyu Han, Seoul, KR;
Myung-sun Kim, Uiwang-si, KR;
Young-sun Yoon, Suwon-si, KR;
Sun-nam Lee, Suwon-si, KR;
Bong-seon Kim, Seognam-si, KR;
Jae-heung Lee, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
Provided is a method of controlling content access in a home network. The method includes: (a) defining a predetermined sub group and allocating a sub group key for the sub group; and (b) checking whether a user belongs to the sub group and transmitting the sub group key to a user device requested by the user, wherein the user device obtains an encrypted content key using a domain key and the sub group key. Since a content key is twice encrypted using a domain key and a sub group key and transmitted to a user device, it is possible to provide authorized content access to a user.