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:
Oct. 02, 2012
Filed:
Jul. 27, 2009
Choong-hoon Lee, Seoul, KR;
Jun-bum Shin, Suwon-si, KR;
So-young Lee, Hwaseong-si, KR;
Eun-hwa Hong, Suwon-si, KR;
Choong-hoon Lee, Seoul, KR;
Jun-bum Shin, Suwon-si, KR;
So-young Lee, Hwaseong-si, KR;
Eun-hwa Hong, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A method of transporting an encrypted stream of multimedia content is provided. In the method, when a packet contains data of a predetermined length including selected data from pieces of data corresponding to the multimedia content and a header, key information, and first time information from among pieces of information included in a selected packet from among at least one packet are received, and encryption information is determined from the key information and the first time information, according to a key derivation function. The first time information is variable with time. The at least one packet including data corresponding to the multimedia content is encrypted using the encryption information. The at least one encrypted packet and the key information are transported.