公开(公告)号：EP1766843A1

公开(公告)日：2007-03-28

申请号：EP05763105.3

申请日：2005-07-01

申请人： Nokia Corporation

发明人： PAILA, Toni ,  KARRAS, Timo ,  JYSKE, Eero ,  LAHTINEN, Pekka ,  MULLER, Dominique

IPC分类号： H04L9/00 ,  H04N7/167

CPC分类号： H04N7/1675 ,  H04L12/189 ,  H04L63/0457 ,  H04L63/068 ,  H04L65/607 ,  H04N21/2347 ,  H04N21/235 ,  H04N21/26613 ,  H04N21/435 ,  H04N21/4408 ,  H04N21/64315 ,  H04N21/64322 ,  H04W4/00

摘要： The present invention provides methods, apparatuses, and systems for delivering protected multimedia content to a receiving device. Portions of protected multi-media content and associated key information are inserted in a same time slice burst. Multi-media content is processed into a plurality of content datagrams, in which each content datagram is associated with a corresponding component. Key information may be processed as a keystream that is logically separate from the components. A content datagram may be encrypted with an associated key. A receiving device receives the time slice burst with the plurality of content datagrams and associated key datagrams of the keystream. The receiving device consequently decrypts the plurality of content datagrams. Also, key information may be processed as key datagrams that are included with at least one component, in which each component comprises an associated plurality of content datagrams.

公开(公告)号：EP1897290B1

公开(公告)日：2013-07-10

申请号：EP06744707.8

申请日：2006-05-04

申请人： Nokia Corporation

发明人： JYSKE, Eero ,  KARRAS, Timo

IPC分类号： H04L12/801

CPC分类号： H04L47/10 ,  H04L12/189 ,  H04L47/22 ,  H04L65/4076 ,  H04L65/80 ,  H04W28/14

公开(公告)号：EP2022198A2

公开(公告)日：2009-02-11

申请号：EP07734468.7

申请日：2007-04-27

申请人： Nokia Corporation ,  Nokia Inc.

发明人： QUELLE, Hans-Christoph ,  SOINIO, Markku ,  KARRAS, Timo

IPC分类号： H04H1/00

CPC分类号： H04H60/74 ,  H04H20/28 ,  H04H20/57 ,  H04H60/91 ,  H04H2201/13 ,  H04N21/2353 ,  H04N21/64315 ,  H04N21/6437

摘要： Provided are apparatuses and methods for transmitting radiotext plus data (e.g., RT+ data) to a mobile terminal. In one example, radiotext plus data is received and transmitted to the mobile terminal in a Digital Video Broadcast - Handheld (DVB-H) data stream. Program or service data corresponding to a program may be encoded on IP and transmitted in audio/video data in a DVB-H data stream and RT+ data corresponding to the program may b transmitted on Internet Protocol (IP). For example, the RT+ data may be converted to Real- Time Transport Protocol (RTP) on a RTP timed text protocol. In another example, a content stream may be received and divided into a program data stream and a corresponding RT+ data stream. The RT+ data stream may be converted to RTP and synchronized with the program data on audio/video data in a DVB-H data stream. The RT+ data may be delivered to a mobile terminal.

公开(公告)号：EP1897290A1

公开(公告)日：2008-03-12

申请号：EP06744707.8

申请日：2006-05-04

申请人： Nokia Corporation

发明人： JYSKE, Eero ,  KARRAS, Timo

IPC分类号： H04L12/56

CPC分类号： H04L47/10 ,  H04L12/189 ,  H04L47/22 ,  H04L65/4076 ,  H04L65/80 ,  H04W28/14

摘要： Provided are apparatuses and methods in a digital broadcast transmission system for optimizing the buffering time of data streams prior to data consumption of playback. The optimal buffering time is calculated based on parameters from the server. The parameters may include the burst interval, buffering delay, the average size of data bursts, die amount of data in the buffer, the earliest timestamp and/or the latest timestamp.

公开(公告)号：EP1782567A1

公开(公告)日：2007-05-09

申请号：EP05770392.8

申请日：2005-07-25

申请人： Nokia Corporation

发明人： POHJOLAINEN, Topi ,  JYSKE, Eero ,  PUPUTTI, Matti ,  KARRAS, Timo

IPC分类号： H04L9/00 ,  H04L29/06 ,  H04L29/08

CPC分类号： H04L63/18 ,  G06F21/602 ,  H04L63/0428 ,  H04L63/062 ,  H04L69/16 ,  H04L69/161 ,  H04L2463/101

摘要： Methods and systems for delivering decrypted Internet Protocol (IP) packets are described. The method for delivery comprises steps of receiving a request from an application for IP packets associated with a first IP address/port pair; receiving IP packets associated with a different IP address/port pair; extracting decryption information from the IP packets associated with the different IP address/port pair; decrypting the encrypted IP packets associated with the first IP address/port pair based upon the extracted decryption information; and transmitting the decrypted IP packets associated with the first IP address/port pair to the application. The decryption information may include decryption key(s) and/or properties/parameters and may be independent of the application.