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:
Jul. 16, 2013
Filed:
Nov. 09, 2009
Applicants:
Changjie Wang, Shangai, CN;
Fulong MA, Shanghai, CN;
Hui LI, Shanghai, CN;
Inventors:
Assignee:
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention provides a method and devices for managing digital content, the method comprising the steps of sending, by a first device (), an encrypted content key () to a second device (); sending, by said second device () to a third device (), a license data describing the rights to use said digital content by said third device () in response to a request from said third device () to use said digital content, wherein said license data includes said encrypted content key (); and receiving, by said third device () from said first device (), data for decrypting said encrypted content key ().