Patent ID: 9137493
Filing Date: 2015-09-15
Classification: G06F,H04N

Abstract:
1. A method for providing an excerpt of a protected digital content to a receiver, the method comprising, at a device: receiving the protected digital content and a global license for the protected digital content, the global license comprising a master control word, wherein the protected digital content is divided into a plurality of parts, each part being encrypted using a control word specific for the part, each control word being generated from the master control word, wherein the protected digital content is associated with authorization information that limits excerpt provision; selecting the parts of the protected digital content to be included in the excerpt; generating the control words for the selected parts from the master control word; verifying the authorization information; generating an excerpt license for the selected parts only if verification indicates that excerpt provision is allowed, the excerpt license comprising the control words for the selected parts; and transmitting the selected parts of the protected digital content and the excerpt license to the receiver.