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. 09, 2012
Filed:
Mar. 21, 2007
Srinath Thiruvengadam, Donauwörth, DE;
Srinath Thiruvengadam, Donauwörth, DE;
Nokia Siemens Networks GmbH & Co. KG, Munich, DE;
Abstract
The invention relates to methods for encoding and decoding media data (MD, CMD). One of the methods comprises the following steps: A request is transmitted by a subscriber terminal () over a control network () to a control server () to establish a set of encoding parameters (K) for control data. The request includes identification data (ID) of the subscriber terminal (). The control server () thereupon specifies the set of encoding parameters (K) for control data, comprising a random number (R), a control data key (CK) and an integrity key (IK), wherein the control data key (CK) and the integrity key (IK) are dependent on the random number (R) and the identification data (ID). A media key (MK) dependent on the control data key (CK) and on the integrity key (IK) is then generated by the control server () and transmitted over a core network () to a media server (). The media key (MK) is used to encode and decode the media data (MD, CMD) subsequently transmitted over a media network (). The invention also relates to a subscriber terminal (), a control server (), and a computer program product that are suitable for implementing the method.