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:
Nov. 17, 2015
Filed:
Jun. 10, 2009
Sergey Nikolayevich Seleznev, Gyeonggi-do, KR;
Byung-rae Lee, Seoul, KR;
Sung-oh Hwang, Gyeonggi-do, KR;
Sergey Nikolayevich Seleznev, Gyeonggi-do, KR;
Byung-Rae Lee, Seoul, KR;
Sung-Oh Hwang, Gyeonggi-do, KR;
Abstract
A method and a system for distributing an encryption key for service protection and content protection in a mobile broadcasting system are provided where a network generates a first encryption key when a broadcasting service is first provided to the terminal, and transmits a long term key message including the generated first encryption key to the terminal. Also, the network generates a second encryption key before the lifetime of a first access value pair expires, and transmits a long term key message including the generated second encryption key to the terminal.