公开(公告)号：US20180352279A1

公开(公告)日：2018-12-06

申请号：US16058790

申请日：2018-08-08

申请人： AT&T INTELLECUTAL PROPERTY I, L.P.

发明人： Lee M. Chow ,  David Piepenbrink ,  Stephen Rys ,  James T. Sofos

IPC分类号： H04N21/262 ,  H04N21/6405 ,  H04N21/4627 ,  H04N21/258 ,  H04N21/472 ,  H04N21/25 ,  H04N21/2347

CPC分类号： H04N21/26208 ,  H04N21/2347 ,  H04N21/252 ,  H04N21/25841 ,  H04N21/25883 ,  H04N21/25891 ,  H04N21/4627 ,  H04N21/47202 ,  H04N21/6405

摘要： A method includes encrypting, at a server, a media content item to form encrypted content. The method includes determining, at the server, a group of media devices associated with users that are likely to request the media content item. The method includes multicasting, without receiving a related request for the media content item from a media device of the group, the encrypted content and information from the server to the group of media devices. The information includes a usage period of the encrypted content. The method includes, receiving, at the server during the usage period, an acceptance notice of an offer for the media content item from a media device of the group of media devices. The method also includes sending, from the server to the media device, a decryption key for the encrypted content responsive to the acceptance notice.